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powerpc updates for 4.9 #2

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Freescale updates from Scott:
 
 "Highlights include qbman support (a prerequisite for datapath drivers
 such as ethernet), a PCI DMA fix+improvement, reset handler changes, more
 8xx optimizations, and some cleanups and fixes."
 
 Fixes:
  - selftests/powerpc: Add missing binaries to .gitignores (Michael Ellerman)
  - selftests/powerpc: Fix build break caused by EXPORT_SYMBOL changes (Michael Ellerman)
  - powerpc/pseries: Fix stack corruption in htpe code (Laurent Dufour)
  - powerpc/64s: Fix power4_fixup_nap placement (Nicholas Piggin)
  - powerpc/64: Fix incorrect return value from __copy_tofrom_user (Paul Mackerras)
  - powerpc/mm/hash64: Fix might_have_hea() check (Michael Ellerman)
 
 Other:
  - MAINTAINERS: Remove myself from PA Semi entries (Olof Johansson)
  - MAINTAINERS: Drop separate pseries entry (Michael Ellerman)
  - MAINTAINERS: Update powerpc website & add selftests (Michael Ellerman)
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Merge tag 'powerpc-4.9-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux

Pull more powerpc updates from Michael Ellerman:
 "Some more powerpc updates for 4.9:

  Freescale updates from Scott Wood:
   - qbman support (a prerequisite for datapath drivers such as ethernet)
   - a PCI DMA fix+improvement
   - reset handler changes
   - more 8xx optimizations
   - some cleanups and fixes.'

  Fixes:
   - selftests/powerpc: Add missing binaries to .gitignores (Michael Ellerman)
   - selftests/powerpc: Fix build break caused by EXPORT_SYMBOL changes (Michael Ellerman)
   - powerpc/pseries: Fix stack corruption in htpe code (Laurent Dufour)
   - powerpc/64s: Fix power4_fixup_nap placement (Nicholas Piggin)
   - powerpc/64: Fix incorrect return value from __copy_tofrom_user (Paul Mackerras)
   - powerpc/mm/hash64: Fix might_have_hea() check (Michael Ellerman)

  Other:
   - MAINTAINERS: Remove myself from PA Semi entries (Olof Johansson)
   - MAINTAINERS: Drop separate pseries entry (Michael Ellerman)
   - MAINTAINERS: Update powerpc website & add selftests (Michael Ellerman):

* tag 'powerpc-4.9-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (35 commits)
  powerpc/mm/hash64: Fix might_have_hea() check
  powerpc/64: Fix incorrect return value from __copy_tofrom_user
  powerpc/64s: Fix power4_fixup_nap placement
  powerpc/pseries: Fix stack corruption in htpe code
  selftests/powerpc: Fix build break caused by EXPORT_SYMBOL changes
  MAINTAINERS: Update powerpc website & add selftests
  MAINTAINERS: Drop separate pseries entry
  MAINTAINERS: Remove myself from PA Semi entries
  selftests/powerpc: Add missing binaries to .gitignores
  arch/powerpc: Add CONFIG_FSL_DPAA to corenetXX_smp_defconfig
  soc/qman: Add self-test for QMan driver
  soc/bman: Add self-test for BMan driver
  soc/fsl: Introduce DPAA 1.x QMan device driver
  soc/fsl: Introduce DPAA 1.x BMan device driver
  powerpc/8xx: make user addr DTLB miss the short path
  powerpc/8xx: Move additional DTLBMiss handlers out of exception area
  powerpc/8xx: use r3 to scratch CR in ITLBmiss
  soc/fsl/qe: fix gpio save_regs functions
  powerpc/8xx: add dedicated machine check handler
  powerpc/8xx: add system_reset_exception
  ...
This commit is contained in:
Linus Torvalds 2016-10-14 11:07:42 -07:00
commit d8bfb96a2e
104 changed files with 8631 additions and 266 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

18
MAINTAINERS
View File

@ -7201,17 +7201,11 @@ F: drivers/lightnvm/
F: include/linux/lightnvm.h
F: include/uapi/linux/lightnvm.h
LINUX FOR IBM pSERIES (RS/6000)
M: Paul Mackerras <paulus@au.ibm.com>
W: http://www.ibm.com/linux/ltc/projects/ppc
S: Supported
F: arch/powerpc/boot/rs6000.h
LINUX FOR POWERPC (32-BIT AND 64-BIT)
M: Benjamin Herrenschmidt <benh@kernel.crashing.org>
M: Paul Mackerras <paulus@samba.org>
M: Michael Ellerman <mpe@ellerman.id.au>
W: http://www.penguinppc.org/
W: https://github.com/linuxppc/linux/wiki
L: linuxppc-dev@lists.ozlabs.org
Q: http://patchwork.ozlabs.org/project/linuxppc-dev/list/
T: git git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git
@ -7226,6 +7220,7 @@ F: drivers/net/ethernet/ibm/ibmvnic.*
F: drivers/pci/hotplug/pnv_php.c
F: drivers/pci/hotplug/rpa*
F: drivers/scsi/ibmvscsi/
F: tools/testing/selftests/powerpc
N: opal
N: /pmac
N: powermac
@ -7282,9 +7277,8 @@ F: arch/powerpc/platforms/83xx/
F: arch/powerpc/platforms/85xx/
LINUX FOR POWERPC PA SEMI PWRFICIENT
M: Olof Johansson <olof@lixom.net>
L: linuxppc-dev@lists.ozlabs.org
S: Maintained
S: Orphan
F: arch/powerpc/platforms/pasemi/
F: drivers/*/*pasemi*
F: drivers/*/*/*pasemi*
@ -9019,15 +9013,13 @@ S: Maintained
F: drivers/net/wireless/intersil/p54/
PA SEMI ETHERNET DRIVER
M: Olof Johansson <olof@lixom.net>
L: netdev@vger.kernel.org
S: Maintained
S: Orphan
F: drivers/net/ethernet/pasemi/*
PA SEMI SMBUS DRIVER
M: Olof Johansson <olof@lixom.net>
L: linux-i2c@vger.kernel.org
S: Maintained
S: Orphan
F: drivers/i2c/busses/i2c-pasemi.c
PADATA PARALLEL EXECUTION MECHANISM

4
arch/powerpc/Makefile
View File

@ -318,12 +318,12 @@ mpc85xx_smp_defconfig:
PHONY += corenet32_smp_defconfig
corenet32_smp_defconfig:
$(call merge_into_defconfig,corenet_basic_defconfig,\
85xx-32bit 85xx-smp 85xx-hw fsl-emb-nonhw)
85xx-32bit 85xx-smp 85xx-hw fsl-emb-nonhw dpaa)
PHONY += corenet64_smp_defconfig
corenet64_smp_defconfig:
$(call merge_into_defconfig,corenet_basic_defconfig,\
85xx-64bit 85xx-smp altivec 85xx-hw fsl-emb-nonhw)
85xx-64bit 85xx-smp altivec 85xx-hw fsl-emb-nonhw dpaa)
PHONY += mpc86xx_defconfig
mpc86xx_defconfig:

1
arch/powerpc/configs/dpaa.config Normal file
View File

@ -0,0 +1 @@
CONFIG_FSL_DPAA=y

1
arch/powerpc/include/asm/cputable.h
View File

@ -43,6 +43,7 @@ extern int machine_check_e500mc(struct pt_regs *regs);
extern int machine_check_e500(struct pt_regs *regs);
extern int machine_check_e200(struct pt_regs *regs);
extern int machine_check_47x(struct pt_regs *regs);
int machine_check_8xx(struct pt_regs *regs);
extern void cpu_down_flush_e500v2(void);
extern void cpu_down_flush_e500mc(void);

6
arch/powerpc/include/asm/hw_irq.h
View File

@ -155,6 +155,8 @@ static inline unsigned long arch_local_irq_save(void)
unsigned long flags = arch_local_save_flags();
#ifdef CONFIG_BOOKE
asm volatile("wrteei 0" : : : "memory");
#elif defined(CONFIG_PPC_8xx)
wrtspr(SPRN_EID);
#else
SET_MSR_EE(flags & ~MSR_EE);
#endif
@ -165,6 +167,8 @@ static inline void arch_local_irq_disable(void)
{
#ifdef CONFIG_BOOKE
asm volatile("wrteei 0" : : : "memory");
#elif defined(CONFIG_PPC_8xx)
wrtspr(SPRN_EID);
#else
arch_local_irq_save();
#endif
@ -174,6 +178,8 @@ static inline void arch_local_irq_enable(void)
{
#ifdef CONFIG_BOOKE
asm volatile("wrteei 1" : : : "memory");
#elif defined(CONFIG_PPC_8xx)
wrtspr(SPRN_EIE);
#else
unsigned long msr = mfmsr();
SET_MSR_EE(msr | MSR_EE);

1
arch/powerpc/include/asm/ppc-opcode.h
View File

@ -152,6 +152,7 @@
#define PPC_INST_LWSYNC 0x7c2004ac
#define PPC_INST_SYNC 0x7c0004ac
#define PPC_INST_SYNC_MASK 0xfc0007fe
#define PPC_INST_ISYNC 0x4c00012c
#define PPC_INST_LXVD2X 0x7c000698
#define PPC_INST_MCRXR 0x7c000400
#define PPC_INST_MCRXR_MASK 0xfc0007fe

2
arch/powerpc/include/asm/reg.h
View File

@ -1250,6 +1250,8 @@ static inline void mtmsr_isync(unsigned long val)
: "r" ((unsigned long)(v)) \
: "memory")
#endif
#define wrtspr(rn) asm volatile("mtspr " __stringify(rn) ",0" : \
: : "memory")
extern unsigned long msr_check_and_set(unsigned long bits);
extern bool strict_msr_control;

4
arch/powerpc/include/asm/reg_8xx.h
View File

@ -25,6 +25,10 @@
#define SPRN_MD_RAM0 825
#define SPRN_MD_RAM1 826
/* Special MSR manipulation registers */
#define SPRN_EIE 80 /* External interrupt enable (EE=1, RI=1) */
#define SPRN_EID 81 /* External interrupt disable (EE=0, RI=1) */
/* Commands. Only the first few are available to the instruction cache.
*/
#define IDC_ENABLE 0x02000000 /* Cache enable */

1
arch/powerpc/kernel/cputable.c
View File

@ -1248,6 +1248,7 @@ static struct cpu_spec __initdata cpu_specs[] = {
.mmu_features = MMU_FTR_TYPE_8xx,
.icache_bsize = 16,
.dcache_bsize = 16,
.machine_check = machine_check_8xx,
.platform = "ppc823",
},
#endif /* CONFIG_8xx */

2
arch/powerpc/kernel/exceptions-64s.S
View File

@ -1377,7 +1377,7 @@ __end_interrupts:
DEFINE_FIXED_SYMBOL(__end_interrupts)
#ifdef CONFIG_PPC_970_NAP
TRAMP_REAL_BEGIN(power4_fixup_nap)
EXC_COMMON_BEGIN(power4_fixup_nap)
andc r9,r9,r10
std r9,TI_LOCAL_FLAGS(r11)
ld r10,_LINK(r1) /* make idle task do the */

136
arch/powerpc/kernel/head_8xx.S
View File

@ -226,7 +226,7 @@ i##n: \
ret_from_except)
/* System reset */
EXCEPTION(0x100, Reset, unknown_exception, EXC_XFER_STD)
EXCEPTION(0x100, Reset, system_reset_exception, EXC_XFER_STD)
/* Machine check */
. = 0x200
@ -321,7 +321,7 @@ SystemCall:
#endif
InstructionTLBMiss:
#ifdef CONFIG_8xx_CPU6
#if defined(CONFIG_8xx_CPU6) || defined(CONFIG_MODULES) || defined (CONFIG_DEBUG_PAGEALLOC)
mtspr SPRN_SPRG_SCRATCH2, r3
#endif
EXCEPTION_PROLOG_0
@ -329,23 +329,20 @@ InstructionTLBMiss:
/* If we are faulting a kernel address, we have to use the
* kernel page tables.
*/
mfspr r10, SPRN_SRR0 /* Get effective address of fault */
INVALIDATE_ADJACENT_PAGES_CPU15(r11, r10)
#if defined(CONFIG_MODULES) || defined (CONFIG_DEBUG_PAGEALLOC)
/* Only modules will cause ITLB Misses as we always
* pin the first 8MB of kernel memory */
mfspr r11, SPRN_SRR0 /* Get effective address of fault */
INVALIDATE_ADJACENT_PAGES_CPU15(r10, r11)
mfcr r10
IS_KERNEL(r11, r11)
mfcr r3
IS_KERNEL(r11, r10)
#endif
mfspr r11, SPRN_M_TW /* Get level 1 table */
#if defined(CONFIG_MODULES) || defined (CONFIG_DEBUG_PAGEALLOC)
BRANCH_UNLESS_KERNEL(3f)
lis r11, (swapper_pg_dir-PAGE_OFFSET)@ha
3:
mtcr r10
mfspr r10, SPRN_SRR0 /* Get effective address of fault */
#else
mfspr r10, SPRN_SRR0 /* Get effective address of fault */
INVALIDATE_ADJACENT_PAGES_CPU15(r11, r10)
mfspr r11, SPRN_M_TW /* Get level 1 table base address */
mtcr r3
#endif
/* Insert level 1 index */
rlwimi r11, r10, 32 - ((PAGE_SHIFT - 2) << 1), (PAGE_SHIFT - 2) << 1, 29
@ -377,58 +374,39 @@ InstructionTLBMiss:
MTSPR_CPU6(SPRN_MI_RPN, r10, r3) /* Update TLB entry */
/* Restore registers */
#ifdef CONFIG_8xx_CPU6
#if defined(CONFIG_8xx_CPU6) || defined(CONFIG_MODULES) || defined (CONFIG_DEBUG_PAGEALLOC)
mfspr r3, SPRN_SPRG_SCRATCH2
#endif
EXCEPTION_EPILOG_0
rfi
/*
* Bottom part of DataStoreTLBMiss handler for IMMR area
* not enough space in the DataStoreTLBMiss area
*/
DTLBMissIMMR:
mtcr r10
/* Set 512k byte guarded page and mark it valid */
li r10, MD_PS512K | MD_GUARDED | MD_SVALID
MTSPR_CPU6(SPRN_MD_TWC, r10, r11)
mfspr r10, SPRN_IMMR /* Get current IMMR */
rlwinm r10, r10, 0, 0xfff80000 /* Get 512 kbytes boundary */
ori r10, r10, 0xf0 | MD_SPS16K | _PAGE_SHARED | _PAGE_DIRTY | \
_PAGE_PRESENT | _PAGE_NO_CACHE
MTSPR_CPU6(SPRN_MD_RPN, r10, r11) /* Update TLB entry */
li r11, RPN_PATTERN
mtspr SPRN_DAR, r11 /* Tag DAR */
EXCEPTION_EPILOG_0
rfi
. = 0x1200
DataStoreTLBMiss:
mtspr SPRN_SPRG_SCRATCH2, r3
EXCEPTION_PROLOG_0
mfcr r10
mfcr r3
/* If we are faulting a kernel address, we have to use the
* kernel page tables.
*/
mfspr r11, SPRN_MD_EPN
rlwinm r11, r11, 16, 0xfff8
mfspr r10, SPRN_MD_EPN
rlwinm r10, r10, 16, 0xfff8
cmpli cr0, r10, PAGE_OFFSET@h
mfspr r11, SPRN_M_TW /* Get level 1 table */
blt+ 3f
#ifndef CONFIG_PIN_TLB_IMMR
cmpli cr0, r11, VIRT_IMMR_BASE@h
cmpli cr0, r10, VIRT_IMMR_BASE@h
#endif
cmpli cr7, r11, PAGE_OFFSET@h
_ENTRY(DTLBMiss_cmp)
cmpli cr7, r10, (PAGE_OFFSET + 0x1800000)@h
lis r11, (swapper_pg_dir-PAGE_OFFSET)@ha
#ifndef CONFIG_PIN_TLB_IMMR
_ENTRY(DTLBMiss_jmp)
beq- DTLBMissIMMR
#endif
bge- cr7, 4f
mfspr r11, SPRN_M_TW /* Get level 1 table */
blt cr7, DTLBMissLinear
3:
mtcr r10
#ifdef CONFIG_8xx_CPU6
mtspr SPRN_SPRG_SCRATCH2, r3
#endif
mtcr r3
mfspr r10, SPRN_MD_EPN
/* Insert level 1 index */
@ -481,30 +459,7 @@ _ENTRY(DTLBMiss_jmp)
MTSPR_CPU6(SPRN_MD_RPN, r10, r3) /* Update TLB entry */
/* Restore registers */
#ifdef CONFIG_8xx_CPU6
mfspr r3, SPRN_SPRG_SCRATCH2
#endif
mtspr SPRN_DAR, r11 /* Tag DAR */
EXCEPTION_EPILOG_0
rfi
4:
_ENTRY(DTLBMiss_cmp)
cmpli cr0, r11, (PAGE_OFFSET + 0x1800000)@h
lis r11, (swapper_pg_dir-PAGE_OFFSET)@ha
bge- 3b
mtcr r10
/* Set 8M byte page and mark it valid */
li r10, MD_PS8MEG | MD_SVALID
MTSPR_CPU6(SPRN_MD_TWC, r10, r11)
mfspr r10, SPRN_MD_EPN
rlwinm r10, r10, 0, 0x0f800000 /* 8xx supports max 256Mb RAM */
ori r10, r10, 0xf0 | MD_SPS16K | _PAGE_SHARED | _PAGE_DIRTY | \
_PAGE_PRESENT
MTSPR_CPU6(SPRN_MD_RPN, r10, r11) /* Update TLB entry */
li r11, RPN_PATTERN
mtspr SPRN_DAR, r11 /* Tag DAR */
EXCEPTION_EPILOG_0
rfi
@ -570,6 +525,43 @@ DARFixed:/* Return from dcbx instruction bug workaround */
. = 0x2000
/*
* Bottom part of DataStoreTLBMiss handlers for IMMR area and linear RAM.
* not enough space in the DataStoreTLBMiss area.
*/
DTLBMissIMMR:
mtcr r3
/* Set 512k byte guarded page and mark it valid */
li r10, MD_PS512K | MD_GUARDED | MD_SVALID
MTSPR_CPU6(SPRN_MD_TWC, r10, r11)
mfspr r10, SPRN_IMMR /* Get current IMMR */
rlwinm r10, r10, 0, 0xfff80000 /* Get 512 kbytes boundary */
ori r10, r10, 0xf0 | MD_SPS16K | _PAGE_SHARED | _PAGE_DIRTY | \
_PAGE_PRESENT | _PAGE_NO_CACHE
MTSPR_CPU6(SPRN_MD_RPN, r10, r11) /* Update TLB entry */
li r11, RPN_PATTERN
mtspr SPRN_DAR, r11 /* Tag DAR */
mfspr r3, SPRN_SPRG_SCRATCH2
EXCEPTION_EPILOG_0
rfi
DTLBMissLinear:
mtcr r3
/* Set 8M byte page and mark it valid */
li r11, MD_PS8MEG | MD_SVALID
MTSPR_CPU6(SPRN_MD_TWC, r11, r3)
rlwinm r10, r10, 16, 0x0f800000 /* 8xx supports max 256Mb RAM */
ori r10, r10, 0xf0 | MD_SPS16K | _PAGE_SHARED | _PAGE_DIRTY | \
_PAGE_PRESENT
MTSPR_CPU6(SPRN_MD_RPN, r10, r11) /* Update TLB entry */
li r11, RPN_PATTERN
mtspr SPRN_DAR, r11 /* Tag DAR */
mfspr r3, SPRN_SPRG_SCRATCH2
EXCEPTION_EPILOG_0
rfi
/* This is the procedure to calculate the data EA for buggy dcbx,dcbi instructions
* by decoding the registers used by the dcbx instruction and adding them.
* DAR is set to the calculated address.
@ -586,7 +578,9 @@ FixupDAR:/* Entry point for dcbx workaround. */
rlwinm r11, r10, 16, 0xfff8
_ENTRY(FixupDAR_cmp)
cmpli cr7, r11, (PAGE_OFFSET + 0x1800000)@h
blt- cr7, 200f
/* create physical page address from effective address */
tophys(r11, r10)
blt- cr7, 201f
lis r11, (swapper_pg_dir-PAGE_OFFSET)@ha
/* Insert level 1 index */
3: rlwimi r11, r10, 32 - ((PAGE_SHIFT - 2) << 1), (PAGE_SHIFT - 2) << 1, 29
@ -616,10 +610,6 @@ _ENTRY(FixupDAR_cmp)
141: mfspr r10,SPRN_SPRG_SCRATCH2
b DARFixed /* Nope, go back to normal TLB processing */
/* create physical page address from effective address */
200: tophys(r11, r10)
b 201b
144: mfspr r10, SPRN_DSISR
rlwinm r10, r10,0,7,5 /* Clear store bit for buggy dcbst insn */
mtspr SPRN_DSISR, r10

27
arch/powerpc/kernel/setup-common.c
View File

@ -131,15 +131,26 @@ void machine_shutdown(void)
ppc_md.machine_shutdown();
}
static void machine_hang(void)
{
pr_emerg("System Halted, OK to turn off power\n");
local_irq_disable();
while (1)
;
}
void machine_restart(char *cmd)
{
machine_shutdown();
if (ppc_md.restart)
ppc_md.restart(cmd);
smp_send_stop();
printk(KERN_EMERG "System Halted, OK to turn off power\n");
local_irq_disable();
while (1) ;
do_kernel_restart(cmd);
mdelay(1000);
machine_hang();
}
void machine_power_off(void)
@ -147,10 +158,9 @@ void machine_power_off(void)
machine_shutdown();
if (pm_power_off)
pm_power_off();
smp_send_stop();
printk(KERN_EMERG "System Halted, OK to turn off power\n");
local_irq_disable();
while (1) ;
machine_hang();
}
/* Used by the G5 thermal driver */
EXPORT_SYMBOL_GPL(machine_power_off);
@ -163,10 +173,9 @@ void machine_halt(void)
machine_shutdown();
if (ppc_md.halt)
ppc_md.halt();
smp_send_stop();
printk(KERN_EMERG "System Halted, OK to turn off power\n");
local_irq_disable();
while (1) ;
machine_hang();
}

45
arch/powerpc/kernel/traps.c
View File

@ -273,7 +273,6 @@ void _exception(int signr, struct pt_regs *regs, int code, unsigned long addr)
force_sig_info(signr, &info, current);
}
#ifdef CONFIG_PPC64
void system_reset_exception(struct pt_regs *regs)
{
/* See if any machine dependent calls */
@ -291,6 +290,7 @@ void system_reset_exception(struct pt_regs *regs)
/* What should we do here? We could issue a shutdown or hard reset. */
}
#ifdef CONFIG_PPC64
/*
* This function is called in real mode. Strictly no printk's please.
*
@ -352,12 +352,11 @@ static inline int check_io_access(struct pt_regs *regs)
* For the debug message, we look at the preceding
* load or store.
*/
if (*nip == 0x60000000) /* nop */
if (*nip == PPC_INST_NOP)
nip -= 2;
else if (*nip == 0x4c00012c) /* isync */
else if (*nip == PPC_INST_ISYNC)
--nip;
if (*nip == 0x7c0004ac || (*nip >> 26) == 3) {
/* sync or twi */
if (*nip == PPC_INST_SYNC || (*nip >> 26) == OP_TRAP) {
unsigned int rb;
--nip;
@ -668,6 +667,31 @@ int machine_check_e200(struct pt_regs *regs)
return 0;
}
#elif defined(CONFIG_PPC_8xx)
int machine_check_8xx(struct pt_regs *regs)
{
unsigned long reason = get_mc_reason(regs);
pr_err("Machine check in kernel mode.\n");
pr_err("Caused by (from SRR1=%lx): ", reason);
if (reason & 0x40000000)
pr_err("Fetch error at address %lx\n", regs->nip);
else
pr_err("Data access error at address %lx\n", regs->dar);
#ifdef CONFIG_PCI
/* the qspan pci read routines can cause machine checks -- Cort
*
* yuck !!! that totally needs to go away ! There are better ways
* to deal with that than having a wart in the mcheck handler.
* -- BenH
*/
bad_page_fault(regs, regs->dar, SIGBUS);
return 1;
#else
return 0;
#endif
}
#else
int machine_check_generic(struct pt_regs *regs)
{
@ -727,17 +751,6 @@ void machine_check_exception(struct pt_regs *regs)
if (recover > 0)
goto bail;
#if defined(CONFIG_8xx) && defined(CONFIG_PCI)
/* the qspan pci read routines can cause machine checks -- Cort
*
* yuck !!! that totally needs to go away ! There are better ways
* to deal with that than having a wart in the mcheck handler.
* -- BenH
*/
bad_page_fault(regs, regs->dar, SIGBUS);
goto bail;
#endif
if (debugger_fault_handler(regs))
goto bail;

2
arch/powerpc/lib/copyuser_64.S
View File

@ -359,6 +359,7 @@ END_FTR_SECTION_IFCLR(CPU_FTR_UNALIGNED_LD_STD)
addi r3,r3,8
171:
177:
179:
addi r3,r3,8
370:
372:
@ -373,7 +374,6 @@ END_FTR_SECTION_IFCLR(CPU_FTR_UNALIGNED_LD_STD)
173:
174:
175:
179:
181:
184:
186:

2
arch/powerpc/mm/hash_utils_64.c
View File

@ -529,7 +529,7 @@ static bool might_have_hea(void)
*/
#ifdef CONFIG_IBMEBUS
return !cpu_has_feature(CPU_FTR_ARCH_207S) &&
!firmware_has_feature(FW_FEATURE_SPLPAR);
firmware_has_feature(FW_FEATURE_SPLPAR);
#else
return false;
#endif

4
arch/powerpc/platforms/82xx/Kconfig
View File

@ -30,8 +30,8 @@ config EP8248E
select 8272
select 8260
select FSL_SOC
select PHYLIB
select MDIO_BITBANG
select PHYLIB if NETDEVICES
select MDIO_BITBANG if PHYLIB
help
This enables support for the Embedded Planet EP8248E board.

4
arch/powerpc/platforms/82xx/ep8248e.c
View File

@ -298,7 +298,9 @@ static const struct of_device_id of_bus_ids[] __initconst = {
static int __init declare_of_platform_devices(void)
{
of_platform_bus_probe(NULL, of_bus_ids, NULL);
platform_driver_register(&ep8248e_mdio_driver);
if (IS_ENABLED(CONFIG_MDIO_BITBANG))
platform_driver_register(&ep8248e_mdio_driver);
return 0;
}

4
arch/powerpc/platforms/83xx/asp834x.c
View File

@ -30,9 +30,7 @@
*/
static void __init asp834x_setup_arch(void)
{
if (ppc_md.progress)
ppc_md.progress("asp834x_setup_arch()", 0);
mpc83xx_setup_arch();
mpc834x_usb_cfg();
}

5
arch/powerpc/platforms/83xx/km83xx.c
View File

@ -130,10 +130,7 @@ static void __init mpc83xx_km_setup_arch(void)
struct device_node *np;
#endif
if (ppc_md.progress)
ppc_md.progress("kmpbec83xx_setup_arch()", 0);
mpc83xx_setup_pci();
mpc83xx_setup_arch();
#ifdef CONFIG_QUICC_ENGINE
np = of_find_node_by_name(NULL, "par_io");

8
arch/powerpc/platforms/83xx/misc.c
View File

@ -142,3 +142,11 @@ void __init mpc83xx_setup_pci(void)
mpc83xx_add_bridge(np);
}
#endif
void __init mpc83xx_setup_arch(void)
{
if (ppc_md.progress)
ppc_md.progress("mpc83xx_setup_arch()", 0);
mpc83xx_setup_pci();
}

5
arch/powerpc/platforms/83xx/mpc830x_rdb.c
View File

@ -27,10 +27,7 @@
*/
static void __init mpc830x_rdb_setup_arch(void)
{
if (ppc_md.progress)
ppc_md.progress("mpc830x_rdb_setup_arch()", 0);
mpc83xx_setup_pci();
mpc83xx_setup_arch();
mpc831x_usb_cfg();
}

5
arch/powerpc/platforms/83xx/mpc831x_rdb.c
View File

@ -28,10 +28,7 @@
*/
static void __init mpc831x_rdb_setup_arch(void)
{
if (ppc_md.progress)
ppc_md.progress("mpc831x_rdb_setup_arch()", 0);
mpc83xx_setup_pci();
mpc83xx_setup_arch();
mpc831x_usb_cfg();
}

5
arch/powerpc/platforms/83xx/mpc832x_mds.c
View File

@ -58,8 +58,7 @@ static void __init mpc832x_sys_setup_arch(void)
struct device_node *np;
u8 __iomem *bcsr_regs = NULL;
if (ppc_md.progress)
ppc_md.progress("mpc832x_sys_setup_arch()", 0);
mpc83xx_setup_arch();
/* Map BCSR area */
np = of_find_node_by_name(NULL, "bcsr");
@ -71,8 +70,6 @@ static void __init mpc832x_sys_setup_arch(void)
of_node_put(np);
}
mpc83xx_setup_pci();
#ifdef CONFIG_QUICC_ENGINE
if ((np = of_find_node_by_name(NULL, "par_io")) != NULL) {
par_io_init(np);

5
arch/powerpc/platforms/83xx/mpc832x_rdb.c
View File

@ -197,10 +197,7 @@ static void __init mpc832x_rdb_setup_arch(void)
struct device_node *np;
#endif
if (ppc_md.progress)
ppc_md.progress("mpc832x_rdb_setup_arch()", 0);
mpc83xx_setup_pci();
mpc83xx_setup_arch();
#ifdef CONFIG_QUICC_ENGINE
if ((np = of_find_node_by_name(NULL, "par_io")) != NULL) {

5
arch/powerpc/platforms/83xx/mpc834x_itx.c
View File

@ -57,10 +57,7 @@ machine_device_initcall(mpc834x_itx, mpc834x_itx_declare_of_platform_devices);
*/
static void __init mpc834x_itx_setup_arch(void)
{
if (ppc_md.progress)
ppc_md.progress("mpc834x_itx_setup_arch()", 0);
mpc83xx_setup_pci();
mpc83xx_setup_arch();
mpc834x_usb_cfg();
}

5
arch/powerpc/platforms/83xx/mpc834x_mds.c
View File

@ -76,10 +76,7 @@ static int mpc834xemds_usb_cfg(void)
*/
static void __init mpc834x_mds_setup_arch(void)
{
if (ppc_md.progress)
ppc_md.progress("mpc834x_mds_setup_arch()", 0);
mpc83xx_setup_pci();
mpc83xx_setup_arch();
mpc834xemds_usb_cfg();
}

5
arch/powerpc/platforms/83xx/mpc836x_mds.c
View File

@ -66,8 +66,7 @@ static void __init mpc836x_mds_setup_arch(void)
struct device_node *np;
u8 __iomem *bcsr_regs = NULL;
if (ppc_md.progress)
ppc_md.progress("mpc836x_mds_setup_arch()", 0);
mpc83xx_setup_arch();
/* Map BCSR area */
np = of_find_node_by_name(NULL, "bcsr");
@ -79,8 +78,6 @@ static void __init mpc836x_mds_setup_arch(void)
of_node_put(np);
}
mpc83xx_setup_pci();
#ifdef CONFIG_QUICC_ENGINE
if ((np = of_find_node_by_name(NULL, "par_io")) != NULL) {
par_io_init(np);

5
arch/powerpc/platforms/83xx/mpc836x_rdk.c
View File

@ -31,10 +31,7 @@ machine_device_initcall(mpc836x_rdk, mpc83xx_declare_of_platform_devices);
static void __init mpc836x_rdk_setup_arch(void)
{
if (ppc_md.progress)
ppc_md.progress("mpc836x_rdk_setup_arch()", 0);
mpc83xx_setup_pci();
mpc83xx_setup_arch();
}
/*

5
arch/powerpc/platforms/83xx/mpc837x_mds.c
View File

@ -79,10 +79,7 @@ out:
*/
static void __init mpc837x_mds_setup_arch(void)
{
if (ppc_md.progress)
ppc_md.progress("mpc837x_mds_setup_arch()", 0);
mpc83xx_setup_pci();
mpc83xx_setup_arch();
mpc837xmds_usb_cfg();
}

5
arch/powerpc/platforms/83xx/mpc837x_rdb.c
View File

@ -50,10 +50,7 @@ static void mpc837x_rdb_sd_cfg(void)
*/
static void __init mpc837x_rdb_setup_arch(void)
{
if (ppc_md.progress)
ppc_md.progress("mpc837x_rdb_setup_arch()", 0);
mpc83xx_setup_pci();
mpc83xx_setup_arch();
mpc837x_usb_cfg();
mpc837x_rdb_sd_cfg();
}

1
arch/powerpc/platforms/83xx/mpc83xx.h
View File

@ -86,5 +86,6 @@ extern void mpc83xx_setup_pci(void);
#endif
extern int mpc83xx_declare_of_platform_devices(void);
extern void mpc83xx_setup_arch(void);
#endif /* __MPC83XX_H__ */

5
arch/powerpc/platforms/83xx/sbc834x.c
View File

@ -47,10 +47,7 @@
*/
static void __init sbc834x_setup_arch(void)
{
if (ppc_md.progress)
ppc_md.progress("sbc834x_setup_arch()", 0);
mpc83xx_setup_pci();
mpc83xx_setup_arch();
}
machine_device_initcall(sbc834x, mpc83xx_declare_of_platform_devices);

2
arch/powerpc/platforms/85xx/Kconfig
View File

@ -72,7 +72,7 @@ config MPC85xx_CDS
config MPC85xx_MDS
bool "Freescale MPC85xx MDS"
select DEFAULT_UIMAGE
select PHYLIB
select PHYLIB if NETDEVICES
select HAS_RAPIDIO
select SWIOTLB
help

1
arch/powerpc/platforms/85xx/bsc913x_qds.c
View File

@ -72,7 +72,6 @@ define_machine(bsc9132_qds) {
.pcibios_fixup_bus = fsl_pcibios_fixup_bus,
#endif
.get_irq = mpic_get_irq,
.restart = fsl_rstcr_restart,
.calibrate_decr = generic_calibrate_decr,
.progress = udbg_progress,
};

1
arch/powerpc/platforms/85xx/bsc913x_rdb.c
View File

@ -59,7 +59,6 @@ define_machine(bsc9131_rdb) {
.setup_arch = bsc913x_rdb_setup_arch,
.init_IRQ = bsc913x_rdb_pic_init,
.get_irq = mpic_get_irq,
.restart = fsl_rstcr_restart,
.calibrate_decr = generic_calibrate_decr,
.progress = udbg_progress,
};

1
arch/powerpc/platforms/85xx/c293pcie.c
View File

@ -65,7 +65,6 @@ define_machine(c293_pcie) {
.setup_arch = c293_pcie_setup_arch,
.init_IRQ = c293_pcie_pic_init,
.get_irq = mpic_get_irq,
.restart = fsl_rstcr_restart,
.calibrate_decr = generic_calibrate_decr,
.progress = udbg_progress,
};

1
arch/powerpc/platforms/85xx/corenet_generic.c
View File

@ -225,7 +225,6 @@ define_machine(corenet_generic) {
#else
.get_irq = mpic_get_coreint_irq,
#endif
.restart = fsl_rstcr_restart,
.calibrate_decr = generic_calibrate_decr,
.progress = udbg_progress,
#ifdef CONFIG_PPC64

1
arch/powerpc/platforms/85xx/ge_imp3a.c
View File

@ -215,7 +215,6 @@ define_machine(ge_imp3a) {
.pcibios_fixup_phb = fsl_pcibios_fixup_phb,
#endif
.get_irq = mpic_get_irq,
.restart = fsl_rstcr_restart,
.calibrate_decr = generic_calibrate_decr,
.progress = udbg_progress,
};

1
arch/powerpc/platforms/85xx/mpc8536_ds.c
View File

@ -77,7 +77,6 @@ define_machine(mpc8536_ds) {
.pcibios_fixup_phb = fsl_pcibios_fixup_phb,
#endif
.get_irq = mpic_get_irq,
.restart = fsl_rstcr_restart,
.calibrate_decr = generic_calibrate_decr,
.progress = udbg_progress,
};

1
arch/powerpc/platforms/85xx/mpc85xx_ads.c
View File

@ -170,7 +170,6 @@ define_machine(mpc85xx_ads) {
.init_IRQ = mpc85xx_ads_pic_init,
.show_cpuinfo = mpc85xx_ads_show_cpuinfo,
.get_irq = mpic_get_irq,
.restart = fsl_rstcr_restart,
.calibrate_decr = generic_calibrate_decr,
.progress = udbg_progress,
};

25
arch/powerpc/platforms/85xx/mpc85xx_cds.c
View File

@ -83,7 +83,8 @@ static int mpc85xx_exclude_device(struct pci_controller *hose,
return PCIBIOS_SUCCESSFUL;
}
static void __noreturn mpc85xx_cds_restart(char *cmd)
static int mpc85xx_cds_restart(struct notifier_block *this,
unsigned long mode, void *cmd)
{
struct pci_dev *dev;
u_char tmp;
@ -108,12 +109,25 @@ static void __noreturn mpc85xx_cds_restart(char *cmd)
}
/*
* If we can't find the VIA chip (maybe the P2P bridge is disabled)
* or the VIA chip reset didn't work, just use the default reset.
* If we can't find the VIA chip (maybe the P2P bridge is
* disabled) or the VIA chip reset didn't work, just return
* and let default reset sequence happen.
*/
fsl_rstcr_restart(NULL);
return NOTIFY_DONE;
}
static int mpc85xx_cds_restart_register(void)
{
static struct notifier_block restart_handler;
restart_handler.notifier_call = mpc85xx_cds_restart;
restart_handler.priority = 192;
return register_restart_handler(&restart_handler);
}
machine_arch_initcall(mpc85xx_cds, mpc85xx_cds_restart_register);
static void __init mpc85xx_cds_pci_irq_fixup(struct pci_dev *dev)
{
u_char c;
@ -380,11 +394,8 @@ define_machine(mpc85xx_cds) {
.show_cpuinfo = mpc85xx_cds_show_cpuinfo,
.get_irq = mpic_get_irq,
#ifdef CONFIG_PCI
.restart = mpc85xx_cds_restart,
.pcibios_fixup_bus = mpc85xx_cds_fixup_bus,
.pcibios_fixup_phb = fsl_pcibios_fixup_phb,
#else
.restart = fsl_rstcr_restart,
#endif
.calibrate_decr = generic_calibrate_decr,
.progress = udbg_progress,

3
arch/powerpc/platforms/85xx/mpc85xx_ds.c
View File

@ -204,7 +204,6 @@ define_machine(mpc8544_ds) {
.pcibios_fixup_phb = fsl_pcibios_fixup_phb,
#endif
.get_irq = mpic_get_irq,
.restart = fsl_rstcr_restart,
.calibrate_decr = generic_calibrate_decr,
.progress = udbg_progress,
};
@ -219,7 +218,6 @@ define_machine(mpc8572_ds) {
.pcibios_fixup_phb = fsl_pcibios_fixup_phb,
#endif
.get_irq = mpic_get_irq,
.restart = fsl_rstcr_restart,
.calibrate_decr = generic_calibrate_decr,
.progress = udbg_progress,
};
@ -234,7 +232,6 @@ define_machine(p2020_ds) {
.pcibios_fixup_phb = fsl_pcibios_fixup_phb,
#endif
.get_irq = mpic_get_irq,
.restart = fsl_rstcr_restart,
.calibrate_decr = generic_calibrate_decr,
.progress = udbg_progress,
};

12
arch/powerpc/platforms/85xx/mpc85xx_mds.c
View File

@ -63,6 +63,8 @@
#define DBG(fmt...)
#endif
#if IS_BUILTIN(CONFIG_PHYLIB)
#define MV88E1111_SCR 0x10
#define MV88E1111_SCR_125CLK 0x0010
static int mpc8568_fixup_125_clock(struct phy_device *phydev)
@ -152,6 +154,8 @@ static int mpc8568_mds_phy_fixups(struct phy_device *phydev)
return err;
}
#endif
/* ************************************************************************
*
* Setup the architecture
@ -313,6 +317,7 @@ static void __init mpc85xx_mds_setup_arch(void)
swiotlb_detect_4g();
}
#if IS_BUILTIN(CONFIG_PHYLIB)
static int __init board_fixups(void)
{
@ -342,9 +347,12 @@ static int __init board_fixups(void)
return 0;
}
machine_arch_initcall(mpc8568_mds, board_fixups);
machine_arch_initcall(mpc8569_mds, board_fixups);
#endif
static int __init mpc85xx_publish_devices(void)
{
if (machine_is(mpc8568_mds))
@ -385,7 +393,6 @@ define_machine(mpc8568_mds) {
.setup_arch = mpc85xx_mds_setup_arch,
.init_IRQ = mpc85xx_mds_pic_init,
.get_irq = mpic_get_irq,
.restart = fsl_rstcr_restart,
.calibrate_decr = generic_calibrate_decr,
.progress = udbg_progress,
#ifdef CONFIG_PCI
@ -405,7 +412,6 @@ define_machine(mpc8569_mds) {
.setup_arch = mpc85xx_mds_setup_arch,
.init_IRQ = mpc85xx_mds_pic_init,
.get_irq = mpic_get_irq,
.restart = fsl_rstcr_restart,
.calibrate_decr = generic_calibrate_decr,
.progress = udbg_progress,
#ifdef CONFIG_PCI
@ -426,7 +432,6 @@ define_machine(p1021_mds) {
.setup_arch = mpc85xx_mds_setup_arch,
.init_IRQ = mpc85xx_mds_pic_init,
.get_irq = mpic_get_irq,
.restart = fsl_rstcr_restart,
.calibrate_decr = generic_calibrate_decr,
.progress = udbg_progress,
#ifdef CONFIG_PCI
@ -434,4 +439,3 @@ define_machine(p1021_mds) {
.pcibios_fixup_phb = fsl_pcibios_fixup_phb,
#endif
};

10
arch/powerpc/platforms/85xx/mpc85xx_rdb.c
View File

@ -213,7 +213,6 @@ define_machine(p2020_rdb) {
.pcibios_fixup_phb = fsl_pcibios_fixup_phb,
#endif
.get_irq = mpic_get_irq,
.restart = fsl_rstcr_restart,
.calibrate_decr = generic_calibrate_decr,
.progress = udbg_progress,
};
@ -228,7 +227,6 @@ define_machine(p1020_rdb) {
.pcibios_fixup_phb = fsl_pcibios_fixup_phb,
#endif
.get_irq = mpic_get_irq,
.restart = fsl_rstcr_restart,
.calibrate_decr = generic_calibrate_decr,
.progress = udbg_progress,
};
@ -243,7 +241,6 @@ define_machine(p1021_rdb_pc) {
.pcibios_fixup_phb = fsl_pcibios_fixup_phb,
#endif
.get_irq = mpic_get_irq,
.restart = fsl_rstcr_restart,
.calibrate_decr = generic_calibrate_decr,
.progress = udbg_progress,
};
@ -258,7 +255,6 @@ define_machine(p2020_rdb_pc) {
.pcibios_fixup_phb = fsl_pcibios_fixup_phb,
#endif
.get_irq = mpic_get_irq,
.restart = fsl_rstcr_restart,
.calibrate_decr = generic_calibrate_decr,
.progress = udbg_progress,
};
@ -273,7 +269,6 @@ define_machine(p1025_rdb) {
.pcibios_fixup_phb = fsl_pcibios_fixup_phb,
#endif
.get_irq = mpic_get_irq,
.restart = fsl_rstcr_restart,
.calibrate_decr = generic_calibrate_decr,
.progress = udbg_progress,
};
@ -288,7 +283,6 @@ define_machine(p1020_mbg_pc) {
.pcibios_fixup_phb = fsl_pcibios_fixup_phb,
#endif
.get_irq = mpic_get_irq,
.restart = fsl_rstcr_restart,
.calibrate_decr = generic_calibrate_decr,
.progress = udbg_progress,
};
@ -303,7 +297,6 @@ define_machine(p1020_utm_pc) {
.pcibios_fixup_phb = fsl_pcibios_fixup_phb,
#endif
.get_irq = mpic_get_irq,
.restart = fsl_rstcr_restart,
.calibrate_decr = generic_calibrate_decr,
.progress = udbg_progress,
};
@ -318,7 +311,6 @@ define_machine(p1020_rdb_pc) {
.pcibios_fixup_phb = fsl_pcibios_fixup_phb,
#endif
.get_irq = mpic_get_irq,
.restart = fsl_rstcr_restart,
.calibrate_decr = generic_calibrate_decr,
.progress = udbg_progress,
};
@ -333,7 +325,6 @@ define_machine(p1020_rdb_pd) {
.pcibios_fixup_phb = fsl_pcibios_fixup_phb,
#endif
.get_irq = mpic_get_irq,
.restart = fsl_rstcr_restart,
.calibrate_decr = generic_calibrate_decr,
.progress = udbg_progress,
};
@ -348,7 +339,6 @@ define_machine(p1024_rdb) {
.pcibios_fixup_phb = fsl_pcibios_fixup_phb,
#endif
.get_irq = mpic_get_irq,
.restart = fsl_rstcr_restart,
.calibrate_decr = generic_calibrate_decr,
.progress = udbg_progress,
};

1
arch/powerpc/platforms/85xx/mvme2500.c
View File

@ -66,7 +66,6 @@ define_machine(mvme2500) {
.pcibios_fixup_phb = fsl_pcibios_fixup_phb,
#endif
.get_irq = mpic_get_irq,
.restart = fsl_rstcr_restart,
.calibrate_decr = generic_calibrate_decr,
.progress = udbg_progress,
};

1
arch/powerpc/platforms/85xx/p1010rdb.c
View File

@ -79,7 +79,6 @@ define_machine(p1010_rdb) {
.pcibios_fixup_phb = fsl_pcibios_fixup_phb,
#endif
.get_irq = mpic_get_irq,
.restart = fsl_rstcr_restart,
.calibrate_decr = generic_calibrate_decr,
.progress = udbg_progress,
};

1
arch/powerpc/platforms/85xx/p1022_ds.c
View File

@ -568,7 +568,6 @@ define_machine(p1022_ds) {
.pcibios_fixup_phb = fsl_pcibios_fixup_phb,
#endif
.get_irq = mpic_get_irq,
.restart = fsl_rstcr_restart,
.calibrate_decr = generic_calibrate_decr,
.progress = udbg_progress,
};

1
arch/powerpc/platforms/85xx/p1022_rdk.c
View File

@ -148,7 +148,6 @@ define_machine(p1022_rdk) {
.pcibios_fixup_phb = fsl_pcibios_fixup_phb,
#endif
.get_irq = mpic_get_irq,
.restart = fsl_rstcr_restart,
.calibrate_decr = generic_calibrate_decr,
.progress = udbg_progress,
};

1
arch/powerpc/platforms/85xx/p1023_rdb.c
View File

@ -110,7 +110,6 @@ define_machine(p1023_rdb) {
.setup_arch = mpc85xx_rdb_setup_arch,
.init_IRQ = mpc85xx_rdb_pic_init,
.get_irq = mpic_get_irq,
.restart = fsl_rstcr_restart,
.calibrate_decr = generic_calibrate_decr,
.progress = udbg_progress,
#ifdef CONFIG_PCI

1
arch/powerpc/platforms/85xx/ppa8548.c
View File

@ -91,7 +91,6 @@ define_machine(ppa8548) {
.init_IRQ = ppa8548_pic_init,
.show_cpuinfo = ppa8548_show_cpuinfo,
.get_irq = mpic_get_irq,
.restart = fsl_rstcr_restart,
.calibrate_decr = generic_calibrate_decr,
.progress = udbg_progress,
};

1
arch/powerpc/platforms/85xx/qemu_e500.c
View File

@ -77,7 +77,6 @@ define_machine(qemu_e500) {
.pcibios_fixup_phb = fsl_pcibios_fixup_phb,
#endif
.get_irq = mpic_get_coreint_irq,
.restart = fsl_rstcr_restart,
.calibrate_decr = generic_calibrate_decr,
.progress = udbg_progress,
};

1
arch/powerpc/platforms/85xx/sbc8548.c
View File

@ -130,7 +130,6 @@ define_machine(sbc8548) {
.init_IRQ = sbc8548_pic_init,
.show_cpuinfo = sbc8548_show_cpuinfo,
.get_irq = mpic_get_irq,
.restart = fsl_rstcr_restart,
#ifdef CONFIG_PCI
.pcibios_fixup_bus = fsl_pcibios_fixup_bus,
.pcibios_fixup_phb = fsl_pcibios_fixup_phb,

8
arch/powerpc/platforms/85xx/sgy_cts1000.c
View File

@ -38,18 +38,18 @@ static void gpio_halt_wfn(struct work_struct *work)
}
static DECLARE_WORK(gpio_halt_wq, gpio_halt_wfn);
static void gpio_halt_cb(void)
static void __noreturn gpio_halt_cb(void)
{
enum of_gpio_flags flags;
int trigger, gpio;
if (!halt_node)
return;
panic("No reset GPIO information was provided in DT\n");
gpio = of_get_gpio_flags(halt_node, 0, &flags);
if (!gpio_is_valid(gpio))
return;
panic("Provided GPIO is invalid\n");
trigger = (flags == OF_GPIO_ACTIVE_LOW);
@ -57,6 +57,8 @@ static void gpio_halt_cb(void)
/* Probably wont return */
gpio_set_value(gpio, trigger);
panic("Halt failed\n");
}
/* This IRQ means someone pressed the power button and it is waiting for us

1
arch/powerpc/platforms/85xx/socrates.c
View File

@ -91,7 +91,6 @@ define_machine(socrates) {
.setup_arch = socrates_setup_arch,
.init_IRQ = socrates_pic_init,
.get_irq = mpic_get_irq,
.restart = fsl_rstcr_restart,
.calibrate_decr = generic_calibrate_decr,
.progress = udbg_progress,
};

1
arch/powerpc/platforms/85xx/stx_gp3.c
View File

@ -103,7 +103,6 @@ define_machine(stx_gp3) {
.init_IRQ = stx_gp3_pic_init,
.show_cpuinfo = stx_gp3_show_cpuinfo,
.get_irq = mpic_get_irq,
.restart = fsl_rstcr_restart,
.calibrate_decr = generic_calibrate_decr,
.progress = udbg_progress,
};

1
arch/powerpc/platforms/85xx/tqm85xx.c
View File

@ -132,7 +132,6 @@ define_machine(tqm85xx) {
.init_IRQ = tqm85xx_pic_init,
.show_cpuinfo = tqm85xx_show_cpuinfo,
.get_irq = mpic_get_irq,
.restart = fsl_rstcr_restart,
.calibrate_decr = generic_calibrate_decr,
.progress = udbg_progress,
};

1
arch/powerpc/platforms/85xx/twr_p102x.c
View File

@ -140,7 +140,6 @@ define_machine(twr_p1025) {
.pcibios_fixup_bus = fsl_pcibios_fixup_bus,
#endif
.get_irq = mpic_get_irq,
.restart = fsl_rstcr_restart,
.calibrate_decr = generic_calibrate_decr,
.progress = udbg_progress,
};

3
arch/powerpc/platforms/85xx/xes_mpc85xx.c
View File

@ -167,7 +167,6 @@ define_machine(xes_mpc8572) {
.pcibios_fixup_phb = fsl_pcibios_fixup_phb,
#endif
.get_irq = mpic_get_irq,
.restart = fsl_rstcr_restart,
.calibrate_decr = generic_calibrate_decr,
.progress = udbg_progress,
};
@ -182,7 +181,6 @@ define_machine(xes_mpc8548) {
.pcibios_fixup_phb = fsl_pcibios_fixup_phb,
#endif
.get_irq = mpic_get_irq,
.restart = fsl_rstcr_restart,
.calibrate_decr = generic_calibrate_decr,
.progress = udbg_progress,
};
@ -197,7 +195,6 @@ define_machine(xes_mpc8540) {
.pcibios_fixup_phb = fsl_pcibios_fixup_phb,
#endif
.get_irq = mpic_get_irq,
.restart = fsl_rstcr_restart,
.calibrate_decr = generic_calibrate_decr,
.progress = udbg_progress,
};

1
arch/powerpc/platforms/86xx/gef_ppc9a.c
View File

@ -204,7 +204,6 @@ define_machine(gef_ppc9a) {
.init_IRQ = gef_ppc9a_init_irq,
.show_cpuinfo = gef_ppc9a_show_cpuinfo,
.get_irq = mpic_get_irq,
.restart = fsl_rstcr_restart,
.time_init = mpc86xx_time_init,
.calibrate_decr = generic_calibrate_decr,
.progress = udbg_progress,

1
arch/powerpc/platforms/86xx/gef_sbc310.c
View File

@ -191,7 +191,6 @@ define_machine(gef_sbc310) {
.init_IRQ = gef_sbc310_init_irq,
.show_cpuinfo = gef_sbc310_show_cpuinfo,
.get_irq = mpic_get_irq,
.restart = fsl_rstcr_restart,
.time_init = mpc86xx_time_init,
.calibrate_decr = generic_calibrate_decr,
.progress = udbg_progress,

1
arch/powerpc/platforms/86xx/gef_sbc610.c
View File

@ -181,7 +181,6 @@ define_machine(gef_sbc610) {
.init_IRQ = gef_sbc610_init_irq,
.show_cpuinfo = gef_sbc610_show_cpuinfo,
.get_irq = mpic_get_irq,
.restart = fsl_rstcr_restart,
.time_init = mpc86xx_time_init,
.calibrate_decr = generic_calibrate_decr,
.progress = udbg_progress,

1
arch/powerpc/platforms/86xx/mpc8610_hpcd.c
View File

@ -331,7 +331,6 @@ define_machine(mpc86xx_hpcd) {
.setup_arch = mpc86xx_hpcd_setup_arch,
.init_IRQ = mpc86xx_init_irq,
.get_irq = mpic_get_irq,
.restart = fsl_rstcr_restart,
.time_init = mpc86xx_time_init,
.calibrate_decr = generic_calibrate_decr,
.progress = udbg_progress,

1
arch/powerpc/platforms/86xx/mpc86xx_hpcn.c
View File

@ -130,7 +130,6 @@ define_machine(mpc86xx_hpcn) {
.init_IRQ = mpc86xx_init_irq,
.show_cpuinfo = mpc86xx_hpcn_show_cpuinfo,
.get_irq = mpic_get_irq,
.restart = fsl_rstcr_restart,
.time_init = mpc86xx_time_init,
.calibrate_decr = generic_calibrate_decr,
.progress = udbg_progress,

1
arch/powerpc/platforms/86xx/mvme7100.c
View File

@ -111,7 +111,6 @@ define_machine(mvme7100) {
.setup_arch = mvme7100_setup_arch,
.init_IRQ = mpc86xx_init_irq,
.get_irq = mpic_get_irq,
.restart = fsl_rstcr_restart,
.time_init = mpc86xx_time_init,
.calibrate_decr = generic_calibrate_decr,
.progress = udbg_progress,

1
arch/powerpc/platforms/86xx/sbc8641d.c
View File

@ -82,7 +82,6 @@ define_machine(sbc8641) {
.init_IRQ = mpc86xx_init_irq,
.show_cpuinfo = sbc8641_show_cpuinfo,
.get_irq = mpic_get_irq,
.restart = fsl_rstcr_restart,
.time_init = mpc86xx_time_init,
.calibrate_decr = generic_calibrate_decr,
.progress = udbg_progress,

4
arch/powerpc/platforms/pseries/lpar.c
View File

@ -393,7 +393,7 @@ static void __pSeries_lpar_hugepage_invalidate(unsigned long *slot,
unsigned long *vpn, int count,
int psize, int ssize)
{
unsigned long param[8];
unsigned long param[PLPAR_HCALL9_BUFSIZE];
int i = 0, pix = 0, rc;
unsigned long flags = 0;
int lock_tlbie = !mmu_has_feature(MMU_FTR_LOCKLESS_TLBIE);
@ -522,7 +522,7 @@ static void pSeries_lpar_flush_hash_range(unsigned long number, int local)
unsigned long flags = 0;
struct ppc64_tlb_batch *batch = this_cpu_ptr(&ppc64_tlb_batch);
int lock_tlbie = !mmu_has_feature(MMU_FTR_LOCKLESS_TLBIE);
unsigned long param[9];
unsigned long param[PLPAR_HCALL9_BUFSIZE];
unsigned long hash, index, shift, hidx, slot;
real_pte_t pte;
int psize, ssize;

2
arch/powerpc/sysdev/cpm1.c
View File

@ -233,8 +233,6 @@ void __init cpm_reset(void)
else
out_be32(&siu_conf->sc_sdcr, 1);
immr_unmap(siu_conf);
cpm_muram_init();
}
static DEFINE_SPINLOCK(cmd_lock);

4
arch/powerpc/sysdev/cpm2.c
View File

@ -66,10 +66,6 @@ void __init cpm2_reset(void)
cpm2_immr = ioremap(get_immrbase(), CPM_MAP_SIZE);
#endif
/* Reclaim the DP memory for our use.
*/
cpm_muram_init();
/* Tell everyone where the comm processor resides.
*/
cpmp = &cpm2_immr->im_cpm;

15
arch/powerpc/sysdev/cpm_common.c
View File

@ -37,6 +37,21 @@
#include <linux/of_gpio.h>
#endif
static int __init cpm_init(void)
{
struct device_node *np;
np = of_find_compatible_node(NULL, NULL, "fsl,cpm1");
if (!np)
np = of_find_compatible_node(NULL, NULL, "fsl,cpm2");
if (!np)
return -ENODEV;
cpm_muram_init();
of_node_put(np);
return 0;
}
subsys_initcall(cpm_init);
#ifdef CONFIG_PPC_EARLY_DEBUG_CPM
static u32 __iomem *cpm_udbg_txdesc;
static u8 __iomem *cpm_udbg_txbuf;

12
arch/powerpc/sysdev/fsl_pci.c
View File

@ -111,8 +111,7 @@ static struct pci_ops fsl_indirect_pcie_ops =
.write = indirect_write_config,
};
#define MAX_PHYS_ADDR_BITS 40
static u64 pci64_dma_offset = 1ull << MAX_PHYS_ADDR_BITS;
static u64 pci64_dma_offset;
#ifdef CONFIG_SWIOTLB
static void setup_swiotlb_ops(struct pci_controller *hose)
@ -132,12 +131,10 @@ static int fsl_pci_dma_set_mask(struct device *dev, u64 dma_mask)
return -EIO;
/*
* Fixup PCI devices that are able to DMA to above the physical
* address width of the SoC such that we can address any internal
* SoC address from across PCI if needed
* Fix up PCI devices that are able to DMA to the large inbound
* mapping that allows addressing any RAM address from across PCI.
*/
if ((dev_is_pci(dev)) &&
dma_mask >= DMA_BIT_MASK(MAX_PHYS_ADDR_BITS)) {
if (dev_is_pci(dev) && dma_mask >= pci64_dma_offset * 2 - 1) {
set_dma_ops(dev, &dma_direct_ops);
set_dma_offset(dev, pci64_dma_offset);
}
@ -387,6 +384,7 @@ static void setup_pci_atmu(struct pci_controller *hose)
mem_log++;
piwar = (piwar & ~PIWAR_SZ_MASK) | (mem_log - 1);
pci64_dma_offset = 1ULL << mem_log;
if (setup_inbound) {
/* Setup inbound memory window */

33
arch/powerpc/sysdev/fsl_soc.c
View File

@ -29,6 +29,7 @@
#include <linux/fsl_devices.h>
#include <linux/fs_enet_pd.h>
#include <linux/fs_uart_pd.h>
#include <linux/reboot.h>
#include <linux/atomic.h>
#include <asm/io.h>
@ -180,23 +181,38 @@ EXPORT_SYMBOL(get_baudrate);
#if defined(CONFIG_FSL_SOC_BOOKE) || defined(CONFIG_PPC_86xx)
static __be32 __iomem *rstcr;
static int fsl_rstcr_restart(struct notifier_block *this,
unsigned long mode, void *cmd)
{
local_irq_disable();
/* set reset control register */
out_be32(rstcr, 0x2); /* HRESET_REQ */
return NOTIFY_DONE;
}
static int __init setup_rstcr(void)
{
struct device_node *np;
static struct notifier_block restart_handler = {
.notifier_call = fsl_rstcr_restart,
.priority = 128,
};
for_each_node_by_name(np, "global-utilities") {
if ((of_get_property(np, "fsl,has-rstcr", NULL))) {
rstcr = of_iomap(np, 0) + 0xb0;
if (!rstcr)
if (!rstcr) {
printk (KERN_ERR "Error: reset control "
"register not mapped!\n");
} else {
register_restart_handler(&restart_handler);
}
break;
}
}
if (!rstcr && ppc_md.restart == fsl_rstcr_restart)
printk(KERN_ERR "No RSTCR register, warm reboot won't work\n");
of_node_put(np);
return 0;
@ -204,15 +220,6 @@ static int __init setup_rstcr(void)
arch_initcall(setup_rstcr);
void __noreturn fsl_rstcr_restart(char *cmd)
{
local_irq_disable();
if (rstcr)
/* set reset control register */
out_be32(rstcr, 0x2); /* HRESET_REQ */
while (1) ;
}
#endif
#if defined(CONFIG_FB_FSL_DIU) || defined(CONFIG_FB_FSL_DIU_MODULE)

2
arch/powerpc/sysdev/fsl_soc.h
View File

@ -19,8 +19,6 @@ extern u32 fsl_get_sys_freq(void);
struct spi_board_info;
struct device_node;
extern void __noreturn fsl_rstcr_restart(char *cmd);
/* The different ports that the DIU can be connected to */
enum fsl_diu_monitor_port {
FSL_DIU_PORT_DVI, /* DVI */

2
arch/powerpc/sysdev/mpic.c
View File

@ -1249,7 +1249,7 @@ struct mpic * __init mpic_alloc(struct device_node *node,
/* Pick the physical address from the device tree if unspecified */
if (!phys_addr) {
/* Check if it is DCR-based */
if (of_get_property(node, "dcr-reg", NULL)) {
if (of_property_read_bool(node, "dcr-reg")) {
flags |= MPIC_USES_DCR;
} else {
struct resource r;

1
drivers/soc/Kconfig
View File

@ -1,6 +1,7 @@
menu "SOC (System On Chip) specific Drivers"
source "drivers/soc/bcm/Kconfig"
source "drivers/soc/fsl/qbman/Kconfig"
source "drivers/soc/fsl/qe/Kconfig"
source "drivers/soc/mediatek/Kconfig"
source "drivers/soc/qcom/Kconfig"

1
drivers/soc/fsl/Makefile
View File

@ -2,5 +2,6 @@
# Makefile for the Linux Kernel SOC fsl specific device drivers
#
obj-$(CONFIG_FSL_DPAA) += qbman/
obj-$(CONFIG_QUICC_ENGINE) += qe/
obj-$(CONFIG_CPM) += qe/

67
drivers/soc/fsl/qbman/Kconfig Normal file
View File

@ -0,0 +1,67 @@
menuconfig FSL_DPAA
bool "Freescale DPAA 1.x support"
depends on FSL_SOC_BOOKE
select GENERIC_ALLOCATOR
help
The Freescale Data Path Acceleration Architecture (DPAA) is a set of
hardware components on specific QorIQ multicore processors.
This architecture provides the infrastructure to support simplified
sharing of networking interfaces and accelerators by multiple CPUs.
The major h/w blocks composing DPAA are BMan and QMan.
The Buffer Manager (BMan) is a hardware buffer pool management block
that allows software and accelerators on the datapath to acquire and
release buffers in order to build frames.
The Queue Manager (QMan) is a hardware queue management block
that allows software and accelerators on the datapath to enqueue and
dequeue frames in order to communicate.
if FSL_DPAA
config FSL_DPAA_CHECKING
bool "Additional driver checking"
help
Compiles in additional checks, to sanity-check the drivers and
any use of the exported API. Not recommended for performance.
config FSL_BMAN_TEST
tristate "BMan self-tests"
help
Compile the BMan self-test code. These tests will
exercise the BMan APIs to confirm functionality
of both the software drivers and hardware device.
config FSL_BMAN_TEST_API
bool "High-level API self-test"
depends on FSL_BMAN_TEST
default y
help
This requires the presence of cpu-affine portals, and performs
high-level API testing with them (whichever portal(s) are affine
to the cpu(s) the test executes on).
config FSL_QMAN_TEST
tristate "QMan self-tests"
help
Compile self-test code for QMan.
config FSL_QMAN_TEST_API
bool "QMan high-level self-test"
depends on FSL_QMAN_TEST
default y
help
This requires the presence of cpu-affine portals, and performs
high-level API testing with them (whichever portal(s) are affine to
the cpu(s) the test executes on).
config FSL_QMAN_TEST_STASH
bool "QMan 'hot potato' data-stashing self-test"
depends on FSL_QMAN_TEST
default y
help
This performs a "hot potato" style test enqueuing/dequeuing a frame
across a series of FQs scheduled to different portals (and cpus), with
DQRR, data and context stashing always on.
endif # FSL_DPAA

12
drivers/soc/fsl/qbman/Makefile Normal file
View File

@ -0,0 +1,12 @@
obj-$(CONFIG_FSL_DPAA) += bman_ccsr.o qman_ccsr.o \
bman_portal.o qman_portal.o \
bman.o qman.o
obj-$(CONFIG_FSL_BMAN_TEST) += bman-test.o
bman-test-y = bman_test.o
bman-test-$(CONFIG_FSL_BMAN_TEST_API) += bman_test_api.o
obj-$(CONFIG_FSL_QMAN_TEST) += qman-test.o
qman-test-y = qman_test.o
qman-test-$(CONFIG_FSL_QMAN_TEST_API) += qman_test_api.o
qman-test-$(CONFIG_FSL_QMAN_TEST_STASH) += qman_test_stash.o

797
drivers/soc/fsl/qbman/bman.c Normal file
View File

@ -0,0 +1,797 @@
/* Copyright 2008 - 2016 Freescale Semiconductor, Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of Freescale Semiconductor nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* ALTERNATIVELY, this software may be distributed under the terms of the
* GNU General Public License ("GPL") as published by the Free Software
* Foundation, either version 2 of that License or (at your option) any
* later version.
*
* THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "bman_priv.h"
#define IRQNAME "BMan portal %d"
#define MAX_IRQNAME 16 /* big enough for "BMan portal %d" */
/* Portal register assists */
/* Cache-inhibited register offsets */
#define BM_REG_RCR_PI_CINH 0x0000
#define BM_REG_RCR_CI_CINH 0x0004
#define BM_REG_RCR_ITR 0x0008
#define BM_REG_CFG 0x0100
#define BM_REG_SCN(n) (0x0200 + ((n) << 2))
#define BM_REG_ISR 0x0e00
#define BM_REG_IER 0x0e04
#define BM_REG_ISDR 0x0e08
#define BM_REG_IIR 0x0e0c
/* Cache-enabled register offsets */
#define BM_CL_CR 0x0000
#define BM_CL_RR0 0x0100
#define BM_CL_RR1 0x0140
#define BM_CL_RCR 0x1000
#define BM_CL_RCR_PI_CENA 0x3000
#define BM_CL_RCR_CI_CENA 0x3100
/*
* Portal modes.
* Enum types;
* pmode == production mode
* cmode == consumption mode,
* Enum values use 3 letter codes. First letter matches the portal mode,
* remaining two letters indicate;
* ci == cache-inhibited portal register
* ce == cache-enabled portal register
* vb == in-band valid-bit (cache-enabled)
*/
enum bm_rcr_pmode { /* matches BCSP_CFG::RPM */
bm_rcr_pci = 0, /* PI index, cache-inhibited */
bm_rcr_pce = 1, /* PI index, cache-enabled */
bm_rcr_pvb = 2 /* valid-bit */
};
enum bm_rcr_cmode { /* s/w-only */
bm_rcr_cci, /* CI index, cache-inhibited */
bm_rcr_cce /* CI index, cache-enabled */
};
/* --- Portal structures --- */
#define BM_RCR_SIZE 8
/* Release Command */
struct bm_rcr_entry {
union {
struct {
u8 _ncw_verb; /* writes to this are non-coherent */
u8 bpid; /* used with BM_RCR_VERB_CMD_BPID_SINGLE */
u8 __reserved1[62];
};
struct bm_buffer bufs[8];
};
};
#define BM_RCR_VERB_VBIT 0x80
#define BM_RCR_VERB_CMD_MASK 0x70 /* one of two values; */
#define BM_RCR_VERB_CMD_BPID_SINGLE 0x20
#define BM_RCR_VERB_CMD_BPID_MULTI 0x30
#define BM_RCR_VERB_BUFCOUNT_MASK 0x0f /* values 1..8 */
struct bm_rcr {
struct bm_rcr_entry *ring, *cursor;
u8 ci, available, ithresh, vbit;
#ifdef CONFIG_FSL_DPAA_CHECKING
u32 busy;
enum bm_rcr_pmode pmode;
enum bm_rcr_cmode cmode;
#endif
};
/* MC (Management Command) command */
struct bm_mc_command {
u8 _ncw_verb; /* writes to this are non-coherent */
u8 bpid; /* used by acquire command */
u8 __reserved[62];
};
#define BM_MCC_VERB_VBIT 0x80
#define BM_MCC_VERB_CMD_MASK 0x70 /* where the verb contains; */
#define BM_MCC_VERB_CMD_ACQUIRE 0x10
#define BM_MCC_VERB_CMD_QUERY 0x40
#define BM_MCC_VERB_ACQUIRE_BUFCOUNT 0x0f /* values 1..8 go here */
/* MC result, Acquire and Query Response */
union bm_mc_result {
struct {
u8 verb;
u8 bpid;
u8 __reserved[62];
};
struct bm_buffer bufs[8];
};
#define BM_MCR_VERB_VBIT 0x80
#define BM_MCR_VERB_CMD_MASK BM_MCC_VERB_CMD_MASK
#define BM_MCR_VERB_CMD_ACQUIRE BM_MCC_VERB_CMD_ACQUIRE
#define BM_MCR_VERB_CMD_QUERY BM_MCC_VERB_CMD_QUERY
#define BM_MCR_VERB_CMD_ERR_INVALID 0x60
#define BM_MCR_VERB_CMD_ERR_ECC 0x70
#define BM_MCR_VERB_ACQUIRE_BUFCOUNT BM_MCC_VERB_ACQUIRE_BUFCOUNT /* 0..8 */
#define BM_MCR_TIMEOUT 10000 /* us */
struct bm_mc {
struct bm_mc_command *cr;
union bm_mc_result *rr;
u8 rridx, vbit;
#ifdef CONFIG_FSL_DPAA_CHECKING
enum {
/* Can only be _mc_start()ed */
mc_idle,
/* Can only be _mc_commit()ed or _mc_abort()ed */
mc_user,
/* Can only be _mc_retry()ed */
mc_hw
} state;
#endif
};
struct bm_addr {
void __iomem *ce; /* cache-enabled */
void __iomem *ci; /* cache-inhibited */
};
struct bm_portal {
struct bm_addr addr;
struct bm_rcr rcr;
struct bm_mc mc;
} ____cacheline_aligned;
/* Cache-inhibited register access. */
static inline u32 bm_in(struct bm_portal *p, u32 offset)
{
return __raw_readl(p->addr.ci + offset);
}
static inline void bm_out(struct bm_portal *p, u32 offset, u32 val)
{
__raw_writel(val, p->addr.ci + offset);
}
/* Cache Enabled Portal Access */
static inline void bm_cl_invalidate(struct bm_portal *p, u32 offset)
{
dpaa_invalidate(p->addr.ce + offset);
}
static inline void bm_cl_touch_ro(struct bm_portal *p, u32 offset)
{
dpaa_touch_ro(p->addr.ce + offset);
}
static inline u32 bm_ce_in(struct bm_portal *p, u32 offset)
{
return __raw_readl(p->addr.ce + offset);
}
struct bman_portal {
struct bm_portal p;
/* interrupt sources processed by portal_isr(), configurable */
unsigned long irq_sources;
/* probing time config params for cpu-affine portals */
const struct bm_portal_config *config;
char irqname[MAX_IRQNAME];
};
static cpumask_t affine_mask;
static DEFINE_SPINLOCK(affine_mask_lock);
static DEFINE_PER_CPU(struct bman_portal, bman_affine_portal);
static inline struct bman_portal *get_affine_portal(void)
{
return &get_cpu_var(bman_affine_portal);
}
static inline void put_affine_portal(void)
{
put_cpu_var(bman_affine_portal);
}
/*
* This object type refers to a pool, it isn't *the* pool. There may be
* more than one such object per BMan buffer pool, eg. if different users of the
* pool are operating via different portals.
*/
struct bman_pool {
/* index of the buffer pool to encapsulate (0-63) */
u32 bpid;
/* Used for hash-table admin when using depletion notifications. */
struct bman_portal *portal;
struct bman_pool *next;
};
static u32 poll_portal_slow(struct bman_portal *p, u32 is);
static irqreturn_t portal_isr(int irq, void *ptr)
{
struct bman_portal *p = ptr;
struct bm_portal *portal = &p->p;
u32 clear = p->irq_sources;
u32 is = bm_in(portal, BM_REG_ISR) & p->irq_sources;
if (unlikely(!is))
return IRQ_NONE;
clear |= poll_portal_slow(p, is);
bm_out(portal, BM_REG_ISR, clear);
return IRQ_HANDLED;
}
/* --- RCR API --- */
#define RCR_SHIFT ilog2(sizeof(struct bm_rcr_entry))
#define RCR_CARRY (uintptr_t)(BM_RCR_SIZE << RCR_SHIFT)
/* Bit-wise logic to wrap a ring pointer by clearing the "carry bit" */
static struct bm_rcr_entry *rcr_carryclear(struct bm_rcr_entry *p)
{
uintptr_t addr = (uintptr_t)p;
addr &= ~RCR_CARRY;
return (struct bm_rcr_entry *)addr;
}
#ifdef CONFIG_FSL_DPAA_CHECKING
/* Bit-wise logic to convert a ring pointer to a ring index */
static int rcr_ptr2idx(struct bm_rcr_entry *e)
{
return ((uintptr_t)e >> RCR_SHIFT) & (BM_RCR_SIZE - 1);
}
#endif
/* Increment the 'cursor' ring pointer, taking 'vbit' into account */
static inline void rcr_inc(struct bm_rcr *rcr)
{
/* increment to the next RCR pointer and handle overflow and 'vbit' */
struct bm_rcr_entry *partial = rcr->cursor + 1;
rcr->cursor = rcr_carryclear(partial);
if (partial != rcr->cursor)
rcr->vbit ^= BM_RCR_VERB_VBIT;
}
static int bm_rcr_get_avail(struct bm_portal *portal)
{
struct bm_rcr *rcr = &portal->rcr;
return rcr->available;
}
static int bm_rcr_get_fill(struct bm_portal *portal)
{
struct bm_rcr *rcr = &portal->rcr;
return BM_RCR_SIZE - 1 - rcr->available;
}
static void bm_rcr_set_ithresh(struct bm_portal *portal, u8 ithresh)
{
struct bm_rcr *rcr = &portal->rcr;
rcr->ithresh = ithresh;
bm_out(portal, BM_REG_RCR_ITR, ithresh);
}
static void bm_rcr_cce_prefetch(struct bm_portal *portal)
{
__maybe_unused struct bm_rcr *rcr = &portal->rcr;
DPAA_ASSERT(rcr->cmode == bm_rcr_cce);
bm_cl_touch_ro(portal, BM_CL_RCR_CI_CENA);
}
static u8 bm_rcr_cce_update(struct bm_portal *portal)
{
struct bm_rcr *rcr = &portal->rcr;
u8 diff, old_ci = rcr->ci;
DPAA_ASSERT(rcr->cmode == bm_rcr_cce);
rcr->ci = bm_ce_in(portal, BM_CL_RCR_CI_CENA) & (BM_RCR_SIZE - 1);
bm_cl_invalidate(portal, BM_CL_RCR_CI_CENA);
diff = dpaa_cyc_diff(BM_RCR_SIZE, old_ci, rcr->ci);
rcr->available += diff;
return diff;
}
static inline struct bm_rcr_entry *bm_rcr_start(struct bm_portal *portal)
{
struct bm_rcr *rcr = &portal->rcr;
DPAA_ASSERT(!rcr->busy);
if (!rcr->available)
return NULL;
#ifdef CONFIG_FSL_DPAA_CHECKING
rcr->busy = 1;
#endif
dpaa_zero(rcr->cursor);
return rcr->cursor;
}
static inline void bm_rcr_pvb_commit(struct bm_portal *portal, u8 myverb)
{
struct bm_rcr *rcr = &portal->rcr;
struct bm_rcr_entry *rcursor;
DPAA_ASSERT(rcr->busy);
DPAA_ASSERT(rcr->pmode == bm_rcr_pvb);
DPAA_ASSERT(rcr->available >= 1);
dma_wmb();
rcursor = rcr->cursor;
rcursor->_ncw_verb = myverb | rcr->vbit;
dpaa_flush(rcursor);
rcr_inc(rcr);
rcr->available--;
#ifdef CONFIG_FSL_DPAA_CHECKING
rcr->busy = 0;
#endif
}
static int bm_rcr_init(struct bm_portal *portal, enum bm_rcr_pmode pmode,
enum bm_rcr_cmode cmode)
{
struct bm_rcr *rcr = &portal->rcr;
u32 cfg;
u8 pi;
rcr->ring = portal->addr.ce + BM_CL_RCR;
rcr->ci = bm_in(portal, BM_REG_RCR_CI_CINH) & (BM_RCR_SIZE - 1);
pi = bm_in(portal, BM_REG_RCR_PI_CINH) & (BM_RCR_SIZE - 1);
rcr->cursor = rcr->ring + pi;
rcr->vbit = (bm_in(portal, BM_REG_RCR_PI_CINH) & BM_RCR_SIZE) ?
BM_RCR_VERB_VBIT : 0;
rcr->available = BM_RCR_SIZE - 1
- dpaa_cyc_diff(BM_RCR_SIZE, rcr->ci, pi);
rcr->ithresh = bm_in(portal, BM_REG_RCR_ITR);
#ifdef CONFIG_FSL_DPAA_CHECKING
rcr->busy = 0;
rcr->pmode = pmode;
rcr->cmode = cmode;
#endif
cfg = (bm_in(portal, BM_REG_CFG) & 0xffffffe0)
| (pmode & 0x3); /* BCSP_CFG::RPM */
bm_out(portal, BM_REG_CFG, cfg);
return 0;
}
static void bm_rcr_finish(struct bm_portal *portal)
{
#ifdef CONFIG_FSL_DPAA_CHECKING
struct bm_rcr *rcr = &portal->rcr;
int i;
DPAA_ASSERT(!rcr->busy);
i = bm_in(portal, BM_REG_RCR_PI_CINH) & (BM_RCR_SIZE - 1);
if (i != rcr_ptr2idx(rcr->cursor))
pr_crit("losing uncommited RCR entries\n");
i = bm_in(portal, BM_REG_RCR_CI_CINH) & (BM_RCR_SIZE - 1);
if (i != rcr->ci)
pr_crit("missing existing RCR completions\n");
if (rcr->ci != rcr_ptr2idx(rcr->cursor))
pr_crit("RCR destroyed unquiesced\n");
#endif
}
/* --- Management command API --- */
static int bm_mc_init(struct bm_portal *portal)
{
struct bm_mc *mc = &portal->mc;
mc->cr = portal->addr.ce + BM_CL_CR;
mc->rr = portal->addr.ce + BM_CL_RR0;
mc->rridx = (__raw_readb(&mc->cr->_ncw_verb) & BM_MCC_VERB_VBIT) ?
0 : 1;
mc->vbit = mc->rridx ? BM_MCC_VERB_VBIT : 0;
#ifdef CONFIG_FSL_DPAA_CHECKING
mc->state = mc_idle;
#endif
return 0;
}
static void bm_mc_finish(struct bm_portal *portal)
{
#ifdef CONFIG_FSL_DPAA_CHECKING
struct bm_mc *mc = &portal->mc;
DPAA_ASSERT(mc->state == mc_idle);
if (mc->state != mc_idle)
pr_crit("Losing incomplete MC command\n");
#endif
}
static inline struct bm_mc_command *bm_mc_start(struct bm_portal *portal)
{
struct bm_mc *mc = &portal->mc;
DPAA_ASSERT(mc->state == mc_idle);
#ifdef CONFIG_FSL_DPAA_CHECKING
mc->state = mc_user;
#endif
dpaa_zero(mc->cr);
return mc->cr;
}
static inline void bm_mc_commit(struct bm_portal *portal, u8 myverb)
{
struct bm_mc *mc = &portal->mc;
union bm_mc_result *rr = mc->rr + mc->rridx;
DPAA_ASSERT(mc->state == mc_user);
dma_wmb();
mc->cr->_ncw_verb = myverb | mc->vbit;
dpaa_flush(mc->cr);
dpaa_invalidate_touch_ro(rr);
#ifdef CONFIG_FSL_DPAA_CHECKING
mc->state = mc_hw;
#endif
}
static inline union bm_mc_result *bm_mc_result(struct bm_portal *portal)
{
struct bm_mc *mc = &portal->mc;
union bm_mc_result *rr = mc->rr + mc->rridx;
DPAA_ASSERT(mc->state == mc_hw);
/*
* The inactive response register's verb byte always returns zero until
* its command is submitted and completed. This includes the valid-bit,
* in case you were wondering...
*/
if (!__raw_readb(&rr->verb)) {
dpaa_invalidate_touch_ro(rr);
return NULL;
}
mc->rridx ^= 1;
mc->vbit ^= BM_MCC_VERB_VBIT;
#ifdef CONFIG_FSL_DPAA_CHECKING
mc->state = mc_idle;
#endif
return rr;
}
static inline int bm_mc_result_timeout(struct bm_portal *portal,
union bm_mc_result **mcr)
{
int timeout = BM_MCR_TIMEOUT;
do {
*mcr = bm_mc_result(portal);
if (*mcr)
break;
udelay(1);
} while (--timeout);
return timeout;
}
/* Disable all BSCN interrupts for the portal */
static void bm_isr_bscn_disable(struct bm_portal *portal)
{
bm_out(portal, BM_REG_SCN(0), 0);
bm_out(portal, BM_REG_SCN(1), 0);
}
static int bman_create_portal(struct bman_portal *portal,
const struct bm_portal_config *c)
{
struct bm_portal *p;
int ret;
p = &portal->p;
/*
* prep the low-level portal struct with the mapped addresses from the
* config, everything that follows depends on it and "config" is more
* for (de)reference...
*/
p->addr.ce = c->addr_virt[DPAA_PORTAL_CE];
p->addr.ci = c->addr_virt[DPAA_PORTAL_CI];
if (bm_rcr_init(p, bm_rcr_pvb, bm_rcr_cce)) {
dev_err(c->dev, "RCR initialisation failed\n");
goto fail_rcr;
}
if (bm_mc_init(p)) {
dev_err(c->dev, "MC initialisation failed\n");
goto fail_mc;
}
/*
* Default to all BPIDs disabled, we enable as required at
* run-time.
*/
bm_isr_bscn_disable(p);
/* Write-to-clear any stale interrupt status bits */
bm_out(p, BM_REG_ISDR, 0xffffffff);
portal->irq_sources = 0;
bm_out(p, BM_REG_IER, 0);
bm_out(p, BM_REG_ISR, 0xffffffff);
snprintf(portal->irqname, MAX_IRQNAME, IRQNAME, c->cpu);
if (request_irq(c->irq, portal_isr, 0, portal->irqname, portal)) {
dev_err(c->dev, "request_irq() failed\n");
goto fail_irq;
}
if (c->cpu != -1 && irq_can_set_affinity(c->irq) &&
irq_set_affinity(c->irq, cpumask_of(c->cpu))) {
dev_err(c->dev, "irq_set_affinity() failed\n");
goto fail_affinity;
}
/* Need RCR to be empty before continuing */
ret = bm_rcr_get_fill(p);
if (ret) {
dev_err(c->dev, "RCR unclean\n");
goto fail_rcr_empty;
}
/* Success */
portal->config = c;
bm_out(p, BM_REG_ISDR, 0);
bm_out(p, BM_REG_IIR, 0);
return 0;
fail_rcr_empty:
fail_affinity:
free_irq(c->irq, portal);
fail_irq:
bm_mc_finish(p);
fail_mc:
bm_rcr_finish(p);
fail_rcr:
return -EIO;
}
struct bman_portal *bman_create_affine_portal(const struct bm_portal_config *c)
{
struct bman_portal *portal;
int err;
portal = &per_cpu(bman_affine_portal, c->cpu);
err = bman_create_portal(portal, c);
if (err)
return NULL;
spin_lock(&affine_mask_lock);
cpumask_set_cpu(c->cpu, &affine_mask);
spin_unlock(&affine_mask_lock);
return portal;
}
static u32 poll_portal_slow(struct bman_portal *p, u32 is)
{
u32 ret = is;
if (is & BM_PIRQ_RCRI) {
bm_rcr_cce_update(&p->p);
bm_rcr_set_ithresh(&p->p, 0);
bm_out(&p->p, BM_REG_ISR, BM_PIRQ_RCRI);
is &= ~BM_PIRQ_RCRI;
}
/* There should be no status register bits left undefined */
DPAA_ASSERT(!is);
return ret;
}
int bman_p_irqsource_add(struct bman_portal *p, u32 bits)
{
unsigned long irqflags;
local_irq_save(irqflags);
set_bits(bits & BM_PIRQ_VISIBLE, &p->irq_sources);
bm_out(&p->p, BM_REG_IER, p->irq_sources);
local_irq_restore(irqflags);
return 0;
}
static int bm_shutdown_pool(u32 bpid)
{
struct bm_mc_command *bm_cmd;
union bm_mc_result *bm_res;
while (1) {
struct bman_portal *p = get_affine_portal();
/* Acquire buffers until empty */
bm_cmd = bm_mc_start(&p->p);
bm_cmd->bpid = bpid;
bm_mc_commit(&p->p, BM_MCC_VERB_CMD_ACQUIRE | 1);
if (!bm_mc_result_timeout(&p->p, &bm_res)) {
put_affine_portal();
pr_crit("BMan Acquire Command timedout\n");
return -ETIMEDOUT;
}
if (!(bm_res->verb & BM_MCR_VERB_ACQUIRE_BUFCOUNT)) {
put_affine_portal();
/* Pool is empty */
return 0;
}
put_affine_portal();
}
return 0;
}
struct gen_pool *bm_bpalloc;
static int bm_alloc_bpid_range(u32 *result, u32 count)
{
unsigned long addr;
addr = gen_pool_alloc(bm_bpalloc, count);
if (!addr)
return -ENOMEM;
*result = addr & ~DPAA_GENALLOC_OFF;
return 0;
}
static int bm_release_bpid(u32 bpid)
{
int ret;
ret = bm_shutdown_pool(bpid);
if (ret) {
pr_debug("BPID %d leaked\n", bpid);
return ret;
}
gen_pool_free(bm_bpalloc, bpid | DPAA_GENALLOC_OFF, 1);
return 0;
}
struct bman_pool *bman_new_pool(void)
{
struct bman_pool *pool = NULL;
u32 bpid;
if (bm_alloc_bpid_range(&bpid, 1))
return NULL;
pool = kmalloc(sizeof(*pool), GFP_KERNEL);
if (!pool)
goto err;
pool->bpid = bpid;
return pool;
err:
bm_release_bpid(bpid);
kfree(pool);
return NULL;
}
EXPORT_SYMBOL(bman_new_pool);
void bman_free_pool(struct bman_pool *pool)
{
bm_release_bpid(pool->bpid);
kfree(pool);
}
EXPORT_SYMBOL(bman_free_pool);
int bman_get_bpid(const struct bman_pool *pool)
{
return pool->bpid;
}
EXPORT_SYMBOL(bman_get_bpid);
static void update_rcr_ci(struct bman_portal *p, int avail)
{
if (avail)
bm_rcr_cce_prefetch(&p->p);
else
bm_rcr_cce_update(&p->p);
}
int bman_release(struct bman_pool *pool, const struct bm_buffer *bufs, u8 num)
{
struct bman_portal *p;
struct bm_rcr_entry *r;
unsigned long irqflags;
int avail, timeout = 1000; /* 1ms */
int i = num - 1;
DPAA_ASSERT(num > 0 && num <= 8);
do {
p = get_affine_portal();
local_irq_save(irqflags);
avail = bm_rcr_get_avail(&p->p);
if (avail < 2)
update_rcr_ci(p, avail);
r = bm_rcr_start(&p->p);
local_irq_restore(irqflags);
put_affine_portal();
if (likely(r))
break;
udelay(1);
} while (--timeout);
if (unlikely(!timeout))
return -ETIMEDOUT;
p = get_affine_portal();
local_irq_save(irqflags);
/*
* we can copy all but the first entry, as this can trigger badness
* with the valid-bit
*/
bm_buffer_set64(r->bufs, bm_buffer_get64(bufs));
bm_buffer_set_bpid(r->bufs, pool->bpid);
if (i)
memcpy(&r->bufs[1], &bufs[1], i * sizeof(bufs[0]));
bm_rcr_pvb_commit(&p->p, BM_RCR_VERB_CMD_BPID_SINGLE |
(num & BM_RCR_VERB_BUFCOUNT_MASK));
local_irq_restore(irqflags);
put_affine_portal();
return 0;
}
EXPORT_SYMBOL(bman_release);
int bman_acquire(struct bman_pool *pool, struct bm_buffer *bufs, u8 num)
{
struct bman_portal *p = get_affine_portal();
struct bm_mc_command *mcc;
union bm_mc_result *mcr;
int ret;
DPAA_ASSERT(num > 0 && num <= 8);
mcc = bm_mc_start(&p->p);
mcc->bpid = pool->bpid;
bm_mc_commit(&p->p, BM_MCC_VERB_CMD_ACQUIRE |
(num & BM_MCC_VERB_ACQUIRE_BUFCOUNT));
if (!bm_mc_result_timeout(&p->p, &mcr)) {
put_affine_portal();
pr_crit("BMan Acquire Timeout\n");
return -ETIMEDOUT;
}
ret = mcr->verb & BM_MCR_VERB_ACQUIRE_BUFCOUNT;
if (bufs)
memcpy(&bufs[0], &mcr->bufs[0], num * sizeof(bufs[0]));
put_affine_portal();
if (ret != num)
ret = -ENOMEM;
return ret;
}
EXPORT_SYMBOL(bman_acquire);
const struct bm_portal_config *
bman_get_bm_portal_config(const struct bman_portal *portal)
{
return portal->config;
}

263
drivers/soc/fsl/qbman/bman_ccsr.c Normal file
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@ -0,0 +1,263 @@
/* Copyright (c) 2009 - 2016 Freescale Semiconductor, Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of Freescale Semiconductor nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* ALTERNATIVELY, this software may be distributed under the terms of the
* GNU General Public License ("GPL") as published by the Free Software
* Foundation, either version 2 of that License or (at your option) any
* later version.
*
* THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "bman_priv.h"
u16 bman_ip_rev;
EXPORT_SYMBOL(bman_ip_rev);
/* Register offsets */
#define REG_FBPR_FPC 0x0800
#define REG_ECSR 0x0a00
#define REG_ECIR 0x0a04
#define REG_EADR 0x0a08
#define REG_EDATA(n) (0x0a10 + ((n) * 0x04))
#define REG_SBEC(n) (0x0a80 + ((n) * 0x04))
#define REG_IP_REV_1 0x0bf8
#define REG_IP_REV_2 0x0bfc
#define REG_FBPR_BARE 0x0c00
#define REG_FBPR_BAR 0x0c04
#define REG_FBPR_AR 0x0c10
#define REG_SRCIDR 0x0d04
#define REG_LIODNR 0x0d08
#define REG_ERR_ISR 0x0e00
#define REG_ERR_IER 0x0e04
#define REG_ERR_ISDR 0x0e08
/* Used by all error interrupt registers except 'inhibit' */
#define BM_EIRQ_IVCI 0x00000010 /* Invalid Command Verb */
#define BM_EIRQ_FLWI 0x00000008 /* FBPR Low Watermark */
#define BM_EIRQ_MBEI 0x00000004 /* Multi-bit ECC Error */
#define BM_EIRQ_SBEI 0x00000002 /* Single-bit ECC Error */
#define BM_EIRQ_BSCN 0x00000001 /* pool State Change Notification */
struct bman_hwerr_txt {
u32 mask;
const char *txt;
};
static const struct bman_hwerr_txt bman_hwerr_txts[] = {
{ BM_EIRQ_IVCI, "Invalid Command Verb" },
{ BM_EIRQ_FLWI, "FBPR Low Watermark" },
{ BM_EIRQ_MBEI, "Multi-bit ECC Error" },
{ BM_EIRQ_SBEI, "Single-bit ECC Error" },
{ BM_EIRQ_BSCN, "Pool State Change Notification" },
};
/* Only trigger low water mark interrupt once only */
#define BMAN_ERRS_TO_DISABLE BM_EIRQ_FLWI
/* Pointer to the start of the BMan's CCSR space */
static u32 __iomem *bm_ccsr_start;
static inline u32 bm_ccsr_in(u32 offset)
{
return ioread32be(bm_ccsr_start + offset/4);
}
static inline void bm_ccsr_out(u32 offset, u32 val)
{
iowrite32be(val, bm_ccsr_start + offset/4);
}
static void bm_get_version(u16 *id, u8 *major, u8 *minor)
{
u32 v = bm_ccsr_in(REG_IP_REV_1);
*id = (v >> 16);
*major = (v >> 8) & 0xff;
*minor = v & 0xff;
}
/* signal transactions for FBPRs with higher priority */
#define FBPR_AR_RPRIO_HI BIT(30)
static void bm_set_memory(u64 ba, u32 size)
{
u32 exp = ilog2(size);
/* choke if size isn't within range */
DPAA_ASSERT(size >= 4096 && size <= 1024*1024*1024 &&
is_power_of_2(size));
/* choke if '[e]ba' has lower-alignment than 'size' */
DPAA_ASSERT(!(ba & (size - 1)));
bm_ccsr_out(REG_FBPR_BARE, upper_32_bits(ba));
bm_ccsr_out(REG_FBPR_BAR, lower_32_bits(ba));
bm_ccsr_out(REG_FBPR_AR, exp - 1);
}
/*
* Location and size of BMan private memory
*
* Ideally we would use the DMA API to turn rmem->base into a DMA address
* (especially if iommu translations ever get involved). Unfortunately, the
* DMA API currently does not allow mapping anything that is not backed with
* a struct page.
*/
static dma_addr_t fbpr_a;
static size_t fbpr_sz;
static int bman_fbpr(struct reserved_mem *rmem)
{
fbpr_a = rmem->base;
fbpr_sz = rmem->size;
WARN_ON(!(fbpr_a && fbpr_sz));
return 0;
}
RESERVEDMEM_OF_DECLARE(bman_fbpr, "fsl,bman-fbpr", bman_fbpr);
static irqreturn_t bman_isr(int irq, void *ptr)
{
u32 isr_val, ier_val, ecsr_val, isr_mask, i;
struct device *dev = ptr;
ier_val = bm_ccsr_in(REG_ERR_IER);
isr_val = bm_ccsr_in(REG_ERR_ISR);
ecsr_val = bm_ccsr_in(REG_ECSR);
isr_mask = isr_val & ier_val;
if (!isr_mask)
return IRQ_NONE;
for (i = 0; i < ARRAY_SIZE(bman_hwerr_txts); i++) {
if (bman_hwerr_txts[i].mask & isr_mask) {
dev_err_ratelimited(dev, "ErrInt: %s\n",
bman_hwerr_txts[i].txt);
if (bman_hwerr_txts[i].mask & ecsr_val) {
/* Re-arm error capture registers */
bm_ccsr_out(REG_ECSR, ecsr_val);
}
if (bman_hwerr_txts[i].mask & BMAN_ERRS_TO_DISABLE) {
dev_dbg(dev, "Disabling error 0x%x\n",
bman_hwerr_txts[i].mask);
ier_val &= ~bman_hwerr_txts[i].mask;
bm_ccsr_out(REG_ERR_IER, ier_val);
}
}
}
bm_ccsr_out(REG_ERR_ISR, isr_val);
return IRQ_HANDLED;
}
static int fsl_bman_probe(struct platform_device *pdev)
{
int ret, err_irq;
struct device *dev = &pdev->dev;
struct device_node *node = dev->of_node;
struct resource *res;
u16 id, bm_pool_cnt;
u8 major, minor;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!res) {
dev_err(dev, "Can't get %s property 'IORESOURCE_MEM'\n",
node->full_name);
return -ENXIO;
}
bm_ccsr_start = devm_ioremap(dev, res->start,
res->end - res->start + 1);
if (!bm_ccsr_start)
return -ENXIO;
bm_get_version(&id, &major, &minor);
if (major == 1 && minor == 0) {
bman_ip_rev = BMAN_REV10;
bm_pool_cnt = BM_POOL_MAX;
} else if (major == 2 && minor == 0) {
bman_ip_rev = BMAN_REV20;
bm_pool_cnt = 8;
} else if (major == 2 && minor == 1) {
bman_ip_rev = BMAN_REV21;
bm_pool_cnt = BM_POOL_MAX;
} else {
dev_err(dev, "Unknown Bman version:%04x,%02x,%02x\n",
id, major, minor);
return -ENODEV;
}
bm_set_memory(fbpr_a, fbpr_sz);
err_irq = platform_get_irq(pdev, 0);
if (err_irq <= 0) {
dev_info(dev, "Can't get %s IRQ\n", node->full_name);
return -ENODEV;
}
ret = devm_request_irq(dev, err_irq, bman_isr, IRQF_SHARED, "bman-err",
dev);
if (ret) {
dev_err(dev, "devm_request_irq() failed %d for '%s'\n",
ret, node->full_name);
return ret;
}
/* Disable Buffer Pool State Change */
bm_ccsr_out(REG_ERR_ISDR, BM_EIRQ_BSCN);
/*
* Write-to-clear any stale bits, (eg. starvation being asserted prior
* to resource allocation during driver init).
*/
bm_ccsr_out(REG_ERR_ISR, 0xffffffff);
/* Enable Error Interrupts */
bm_ccsr_out(REG_ERR_IER, 0xffffffff);
bm_bpalloc = devm_gen_pool_create(dev, 0, -1, "bman-bpalloc");
if (IS_ERR(bm_bpalloc)) {
ret = PTR_ERR(bm_bpalloc);
dev_err(dev, "bman-bpalloc pool init failed (%d)\n", ret);
return ret;
}
/* seed BMan resource pool */
ret = gen_pool_add(bm_bpalloc, DPAA_GENALLOC_OFF, bm_pool_cnt, -1);
if (ret) {
dev_err(dev, "Failed to seed BPID range [%d..%d] (%d)\n",
0, bm_pool_cnt - 1, ret);
return ret;
}
return 0;
};
static const struct of_device_id fsl_bman_ids[] = {
{
.compatible = "fsl,bman",
},
{}
};
static struct platform_driver fsl_bman_driver = {
.driver = {
.name = KBUILD_MODNAME,
.of_match_table = fsl_bman_ids,
.suppress_bind_attrs = true,
},
.probe = fsl_bman_probe,
};
builtin_platform_driver(fsl_bman_driver);

219
drivers/soc/fsl/qbman/bman_portal.c Normal file
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@ -0,0 +1,219 @@
/* Copyright 2008 - 2016 Freescale Semiconductor, Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of Freescale Semiconductor nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* ALTERNATIVELY, this software may be distributed under the terms of the
* GNU General Public License ("GPL") as published by the Free Software
* Foundation, either version 2 of that License or (at your option) any
* later version.
*
* THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "bman_priv.h"
static struct bman_portal *affine_bportals[NR_CPUS];
static struct cpumask portal_cpus;
/* protect bman global registers and global data shared among portals */
static DEFINE_SPINLOCK(bman_lock);
static struct bman_portal *init_pcfg(struct bm_portal_config *pcfg)
{
struct bman_portal *p = bman_create_affine_portal(pcfg);
if (!p) {
dev_crit(pcfg->dev, "%s: Portal failure on cpu %d\n",
__func__, pcfg->cpu);
return NULL;
}
bman_p_irqsource_add(p, BM_PIRQ_RCRI);
affine_bportals[pcfg->cpu] = p;
dev_info(pcfg->dev, "Portal initialised, cpu %d\n", pcfg->cpu);
return p;
}
static void bman_offline_cpu(unsigned int cpu)
{
struct bman_portal *p = affine_bportals[cpu];
const struct bm_portal_config *pcfg;
if (!p)
return;
pcfg = bman_get_bm_portal_config(p);
if (!pcfg)
return;
irq_set_affinity(pcfg->irq, cpumask_of(0));
}
static void bman_online_cpu(unsigned int cpu)
{
struct bman_portal *p = affine_bportals[cpu];
const struct bm_portal_config *pcfg;
if (!p)
return;
pcfg = bman_get_bm_portal_config(p);
if (!pcfg)
return;
irq_set_affinity(pcfg->irq, cpumask_of(cpu));
}
static int bman_hotplug_cpu_callback(struct notifier_block *nfb,
unsigned long action, void *hcpu)
{
unsigned int cpu = (unsigned long)hcpu;
switch (action) {
case CPU_ONLINE:
case CPU_ONLINE_FROZEN:
bman_online_cpu(cpu);
break;
case CPU_DOWN_PREPARE:
case CPU_DOWN_PREPARE_FROZEN:
bman_offline_cpu(cpu);
}
return NOTIFY_OK;
}
static struct notifier_block bman_hotplug_cpu_notifier = {
.notifier_call = bman_hotplug_cpu_callback,
};
static int bman_portal_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct device_node *node = dev->of_node;
struct bm_portal_config *pcfg;
struct resource *addr_phys[2];
void __iomem *va;
int irq, cpu;
pcfg = devm_kmalloc(dev, sizeof(*pcfg), GFP_KERNEL);
if (!pcfg)
return -ENOMEM;
pcfg->dev = dev;
addr_phys[0] = platform_get_resource(pdev, IORESOURCE_MEM,
DPAA_PORTAL_CE);
if (!addr_phys[0]) {
dev_err(dev, "Can't get %s property 'reg::CE'\n",
node->full_name);
return -ENXIO;
}
addr_phys[1] = platform_get_resource(pdev, IORESOURCE_MEM,
DPAA_PORTAL_CI);
if (!addr_phys[1]) {
dev_err(dev, "Can't get %s property 'reg::CI'\n",
node->full_name);
return -ENXIO;
}
pcfg->cpu = -1;
irq = platform_get_irq(pdev, 0);
if (irq <= 0) {
dev_err(dev, "Can't get %s IRQ'\n", node->full_name);
return -ENXIO;
}
pcfg->irq = irq;
va = ioremap_prot(addr_phys[0]->start, resource_size(addr_phys[0]), 0);
if (!va)
goto err_ioremap1;
pcfg->addr_virt[DPAA_PORTAL_CE] = va;
va = ioremap_prot(addr_phys[1]->start, resource_size(addr_phys[1]),
_PAGE_GUARDED | _PAGE_NO_CACHE);
if (!va)
goto err_ioremap2;
pcfg->addr_virt[DPAA_PORTAL_CI] = va;
spin_lock(&bman_lock);
cpu = cpumask_next_zero(-1, &portal_cpus);
if (cpu >= nr_cpu_ids) {
/* unassigned portal, skip init */
spin_unlock(&bman_lock);
return 0;
}
cpumask_set_cpu(cpu, &portal_cpus);
spin_unlock(&bman_lock);
pcfg->cpu = cpu;
if (!init_pcfg(pcfg))
goto err_ioremap2;
/* clear irq affinity if assigned cpu is offline */
if (!cpu_online(cpu))
bman_offline_cpu(cpu);
return 0;
err_ioremap2:
iounmap(pcfg->addr_virt[DPAA_PORTAL_CE]);
err_ioremap1:
dev_err(dev, "ioremap failed\n");
return -ENXIO;
}
static const struct of_device_id bman_portal_ids[] = {
{
.compatible = "fsl,bman-portal",
},
{}
};
MODULE_DEVICE_TABLE(of, bman_portal_ids);
static struct platform_driver bman_portal_driver = {
.driver = {
.name = KBUILD_MODNAME,
.of_match_table = bman_portal_ids,
},
.probe = bman_portal_probe,
};
static int __init bman_portal_driver_register(struct platform_driver *drv)
{
int ret;
ret = platform_driver_register(drv);
if (ret < 0)
return ret;
register_hotcpu_notifier(&bman_hotplug_cpu_notifier);
return 0;
}
module_driver(bman_portal_driver,
bman_portal_driver_register, platform_driver_unregister);

80
drivers/soc/fsl/qbman/bman_priv.h Normal file
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/* Copyright 2008 - 2016 Freescale Semiconductor, Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of Freescale Semiconductor nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* ALTERNATIVELY, this software may be distributed under the terms of the
* GNU General Public License ("GPL") as published by the Free Software
* Foundation, either version 2 of that License or (at your option) any
* later version.
*
* THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include "dpaa_sys.h"
#include <soc/fsl/bman.h>
/* Portal processing (interrupt) sources */
#define BM_PIRQ_RCRI 0x00000002 /* RCR Ring (below threshold) */
/* Revision info (for errata and feature handling) */
#define BMAN_REV10 0x0100
#define BMAN_REV20 0x0200
#define BMAN_REV21 0x0201
extern u16 bman_ip_rev; /* 0 if uninitialised, otherwise BMAN_REVx */
extern struct gen_pool *bm_bpalloc;
struct bm_portal_config {
/*
* Corenet portal addresses;
* [0]==cache-enabled, [1]==cache-inhibited.
*/
void __iomem *addr_virt[2];
/* Allow these to be joined in lists */
struct list_head list;
struct device *dev;
/* User-visible portal configuration settings */
/* portal is affined to this cpu */
int cpu;
/* portal interrupt line */
int irq;
};
struct bman_portal *bman_create_affine_portal(
const struct bm_portal_config *config);
/*
* The below bman_p_***() variant might be called in a situation that the cpu
* which the portal affine to is not online yet.
* @bman_portal specifies which portal the API will use.
*/
int bman_p_irqsource_add(struct bman_portal *p, u32 bits);
/*
* Used by all portal interrupt registers except 'inhibit'
* This mask contains all the "irqsource" bits visible to API users
*/
#define BM_PIRQ_VISIBLE BM_PIRQ_RCRI
const struct bm_portal_config *
bman_get_bm_portal_config(const struct bman_portal *portal);

53
drivers/soc/fsl/qbman/bman_test.c Normal file
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@ -0,0 +1,53 @@
/* Copyright 2008 - 2016 Freescale Semiconductor, Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of Freescale Semiconductor nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* ALTERNATIVELY, this software may be distributed under the terms of the
* GNU General Public License ("GPL") as published by the Free Software
* Foundation, either version 2 of that License or (at your option) any
* later version.
*
* THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "bman_test.h"
MODULE_AUTHOR("Geoff Thorpe");
MODULE_LICENSE("Dual BSD/GPL");
MODULE_DESCRIPTION("BMan testing");
static int test_init(void)
{
#ifdef CONFIG_FSL_BMAN_TEST_API
int loop = 1;
while (loop--)
bman_test_api();
#endif
return 0;
}
static void test_exit(void)
{
}
module_init(test_init);
module_exit(test_exit);

35
drivers/soc/fsl/qbman/bman_test.h Normal file
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@ -0,0 +1,35 @@
/* Copyright 2008 - 2016 Freescale Semiconductor, Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of Freescale Semiconductor nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* ALTERNATIVELY, this software may be distributed under the terms of the
* GNU General Public License ("GPL") as published by the Free Software
* Foundation, either version 2 of that License or (at your option) any
* later version.
*
* THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "bman_priv.h"
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
void bman_test_api(void);

151
drivers/soc/fsl/qbman/bman_test_api.c Normal file
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@ -0,0 +1,151 @@
/* Copyright 2008 - 2016 Freescale Semiconductor, Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of Freescale Semiconductor nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* ALTERNATIVELY, this software may be distributed under the terms of the
* GNU General Public License ("GPL") as published by the Free Software
* Foundation, either version 2 of that License or (at your option) any
* later version.
*
* THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "bman_test.h"
#define NUM_BUFS 93
#define LOOPS 3
#define BMAN_TOKEN_MASK 0x00FFFFFFFFFFLLU
static struct bman_pool *pool;
static struct bm_buffer bufs_in[NUM_BUFS] ____cacheline_aligned;
static struct bm_buffer bufs_out[NUM_BUFS] ____cacheline_aligned;
static int bufs_received;
static void bufs_init(void)
{
int i;
for (i = 0; i < NUM_BUFS; i++)
bm_buffer_set64(&bufs_in[i], 0xfedc01234567LLU * i);
bufs_received = 0;
}
static inline int bufs_cmp(const struct bm_buffer *a, const struct bm_buffer *b)
{
if (bman_ip_rev == BMAN_REV20 || bman_ip_rev == BMAN_REV21) {
/*
* On SoCs with BMan revison 2.0, BMan only respects the 40
* LS-bits of buffer addresses, masking off the upper 8-bits on
* release commands. The API provides for 48-bit addresses
* because some SoCs support all 48-bits. When generating
* garbage addresses for testing, we either need to zero the
* upper 8-bits when releasing to BMan (otherwise we'll be
* disappointed when the buffers we acquire back from BMan
* don't match), or we need to mask the upper 8-bits off when
* comparing. We do the latter.
*/
if ((bm_buffer_get64(a) & BMAN_TOKEN_MASK) <
(bm_buffer_get64(b) & BMAN_TOKEN_MASK))
return -1;
if ((bm_buffer_get64(a) & BMAN_TOKEN_MASK) >
(bm_buffer_get64(b) & BMAN_TOKEN_MASK))
return 1;
} else {
if (bm_buffer_get64(a) < bm_buffer_get64(b))
return -1;
if (bm_buffer_get64(a) > bm_buffer_get64(b))
return 1;
}
return 0;
}
static void bufs_confirm(void)
{
int i, j;
for (i = 0; i < NUM_BUFS; i++) {
int matches = 0;
for (j = 0; j < NUM_BUFS; j++)
if (!bufs_cmp(&bufs_in[i], &bufs_out[j]))
matches++;
WARN_ON(matches != 1);
}
}
/* test */
void bman_test_api(void)
{
int i, loops = LOOPS;
bufs_init();
pr_info("%s(): Starting\n", __func__);
pool = bman_new_pool();
if (!pool) {
pr_crit("bman_new_pool() failed\n");
goto failed;
}
/* Release buffers */
do_loop:
i = 0;
while (i < NUM_BUFS) {
int num = 8;
if (i + num > NUM_BUFS)
num = NUM_BUFS - i;
if (bman_release(pool, bufs_in + i, num)) {
pr_crit("bman_release() failed\n");
goto failed;
}
i += num;
}
/* Acquire buffers */
while (i > 0) {
int tmp, num = 8;
if (num > i)
num = i;
tmp = bman_acquire(pool, bufs_out + i - num, num);
WARN_ON(tmp != num);
i -= num;
}
i = bman_acquire(pool, NULL, 1);
WARN_ON(i > 0);
bufs_confirm();
if (--loops)
goto do_loop;
/* Clean up */
bman_free_pool(pool);
pr_info("%s(): Finished\n", __func__);
return;
failed:
WARN_ON(1);
}

103
drivers/soc/fsl/qbman/dpaa_sys.h Normal file
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@ -0,0 +1,103 @@
/* Copyright 2008 - 2016 Freescale Semiconductor, Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of Freescale Semiconductor nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* ALTERNATIVELY, this software may be distributed under the terms of the
* GNU General Public License ("GPL") as published by the Free Software
* Foundation, either version 2 of that License or (at your option) any
* later version.
*
* THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef __DPAA_SYS_H
#define __DPAA_SYS_H
#include <linux/cpu.h>
#include <linux/slab.h>
#include <linux/module.h>
#include <linux/interrupt.h>
#include <linux/kthread.h>
#include <linux/vmalloc.h>
#include <linux/platform_device.h>
#include <linux/of_reserved_mem.h>
#include <linux/prefetch.h>
#include <linux/genalloc.h>
#include <asm/cacheflush.h>
/* For 2-element tables related to cache-inhibited and cache-enabled mappings */
#define DPAA_PORTAL_CE 0
#define DPAA_PORTAL_CI 1
#if (L1_CACHE_BYTES != 32) && (L1_CACHE_BYTES != 64)
#error "Unsupported Cacheline Size"
#endif
static inline void dpaa_flush(void *p)
{
#ifdef CONFIG_PPC
flush_dcache_range((unsigned long)p, (unsigned long)p+64);
#elif defined(CONFIG_ARM32)
__cpuc_flush_dcache_area(p, 64);
#elif defined(CONFIG_ARM64)
__flush_dcache_area(p, 64);
#endif
}
#define dpaa_invalidate(p) dpaa_flush(p)
#define dpaa_zero(p) memset(p, 0, 64)
static inline void dpaa_touch_ro(void *p)
{
#if (L1_CACHE_BYTES == 32)
prefetch(p+32);
#endif
prefetch(p);
}
/* Commonly used combo */
static inline void dpaa_invalidate_touch_ro(void *p)
{
dpaa_invalidate(p);
dpaa_touch_ro(p);
}
#ifdef CONFIG_FSL_DPAA_CHECKING
#define DPAA_ASSERT(x) WARN_ON(!(x))
#else
#define DPAA_ASSERT(x)
#endif
/* cyclic helper for rings */
static inline u8 dpaa_cyc_diff(u8 ringsize, u8 first, u8 last)
{
/* 'first' is included, 'last' is excluded */
if (first <= last)
return last - first;
return ringsize + last - first;
}
/* Offset applied to genalloc pools due to zero being an error return */
#define DPAA_GENALLOC_OFF 0x80000000
#endif /* __DPAA_SYS_H */

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/* Copyright 2008 - 2016 Freescale Semiconductor, Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of Freescale Semiconductor nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* ALTERNATIVELY, this software may be distributed under the terms of the
* GNU General Public License ("GPL") as published by the Free Software
* Foundation, either version 2 of that License or (at your option) any
* later version.
*
* THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "qman_priv.h"
u16 qman_ip_rev;
EXPORT_SYMBOL(qman_ip_rev);
u16 qm_channel_pool1 = QMAN_CHANNEL_POOL1;
EXPORT_SYMBOL(qm_channel_pool1);
/* Register offsets */
#define REG_QCSP_LIO_CFG(n) (0x0000 + ((n) * 0x10))
#define REG_QCSP_IO_CFG(n) (0x0004 + ((n) * 0x10))
#define REG_QCSP_DD_CFG(n) (0x000c + ((n) * 0x10))
#define REG_DD_CFG 0x0200
#define REG_DCP_CFG(n) (0x0300 + ((n) * 0x10))
#define REG_DCP_DD_CFG(n) (0x0304 + ((n) * 0x10))
#define REG_DCP_DLM_AVG(n) (0x030c + ((n) * 0x10))
#define REG_PFDR_FPC 0x0400
#define REG_PFDR_FP_HEAD 0x0404
#define REG_PFDR_FP_TAIL 0x0408
#define REG_PFDR_FP_LWIT 0x0410
#define REG_PFDR_CFG 0x0414
#define REG_SFDR_CFG 0x0500
#define REG_SFDR_IN_USE 0x0504
#define REG_WQ_CS_CFG(n) (0x0600 + ((n) * 0x04))
#define REG_WQ_DEF_ENC_WQID 0x0630
#define REG_WQ_SC_DD_CFG(n) (0x640 + ((n) * 0x04))
#define REG_WQ_PC_DD_CFG(n) (0x680 + ((n) * 0x04))
#define REG_WQ_DC0_DD_CFG(n) (0x6c0 + ((n) * 0x04))
#define REG_WQ_DC1_DD_CFG(n) (0x700 + ((n) * 0x04))
#define REG_WQ_DCn_DD_CFG(n) (0x6c0 + ((n) * 0x40)) /* n=2,3 */
#define REG_CM_CFG 0x0800
#define REG_ECSR 0x0a00
#define REG_ECIR 0x0a04
#define REG_EADR 0x0a08
#define REG_ECIR2 0x0a0c
#define REG_EDATA(n) (0x0a10 + ((n) * 0x04))
#define REG_SBEC(n) (0x0a80 + ((n) * 0x04))
#define REG_MCR 0x0b00
#define REG_MCP(n) (0x0b04 + ((n) * 0x04))
#define REG_MISC_CFG 0x0be0
#define REG_HID_CFG 0x0bf0
#define REG_IDLE_STAT 0x0bf4
#define REG_IP_REV_1 0x0bf8
#define REG_IP_REV_2 0x0bfc
#define REG_FQD_BARE 0x0c00
#define REG_PFDR_BARE 0x0c20
#define REG_offset_BAR 0x0004 /* relative to REG_[FQD|PFDR]_BARE */
#define REG_offset_AR 0x0010 /* relative to REG_[FQD|PFDR]_BARE */
#define REG_QCSP_BARE 0x0c80
#define REG_QCSP_BAR 0x0c84
#define REG_CI_SCHED_CFG 0x0d00
#define REG_SRCIDR 0x0d04
#define REG_LIODNR 0x0d08
#define REG_CI_RLM_AVG 0x0d14
#define REG_ERR_ISR 0x0e00
#define REG_ERR_IER 0x0e04
#define REG_REV3_QCSP_LIO_CFG(n) (0x1000 + ((n) * 0x10))
#define REG_REV3_QCSP_IO_CFG(n) (0x1004 + ((n) * 0x10))
#define REG_REV3_QCSP_DD_CFG(n) (0x100c + ((n) * 0x10))
/* Assists for QMAN_MCR */
#define MCR_INIT_PFDR 0x01000000
#define MCR_get_rslt(v) (u8)((v) >> 24)
#define MCR_rslt_idle(r) (!(r) || ((r) >= 0xf0))
#define MCR_rslt_ok(r) ((r) == 0xf0)
#define MCR_rslt_eaccess(r) ((r) == 0xf8)
#define MCR_rslt_inval(r) ((r) == 0xff)
/*
* Corenet initiator settings. Stash request queues are 4-deep to match cores
* ability to snarf. Stash priority is 3, other priorities are 2.
*/
#define QM_CI_SCHED_CFG_SRCCIV 4
#define QM_CI_SCHED_CFG_SRQ_W 3
#define QM_CI_SCHED_CFG_RW_W 2
#define QM_CI_SCHED_CFG_BMAN_W 2
/* write SRCCIV enable */
#define QM_CI_SCHED_CFG_SRCCIV_EN BIT(31)
/* Follows WQ_CS_CFG0-5 */
enum qm_wq_class {
qm_wq_portal = 0,
qm_wq_pool = 1,
qm_wq_fman0 = 2,
qm_wq_fman1 = 3,
qm_wq_caam = 4,
qm_wq_pme = 5,
qm_wq_first = qm_wq_portal,
qm_wq_last = qm_wq_pme
};
/* Follows FQD_[BARE|BAR|AR] and PFDR_[BARE|BAR|AR] */
enum qm_memory {
qm_memory_fqd,
qm_memory_pfdr
};
/* Used by all error interrupt registers except 'inhibit' */
#define QM_EIRQ_CIDE 0x20000000 /* Corenet Initiator Data Error */
#define QM_EIRQ_CTDE 0x10000000 /* Corenet Target Data Error */
#define QM_EIRQ_CITT 0x08000000 /* Corenet Invalid Target Transaction */
#define QM_EIRQ_PLWI 0x04000000 /* PFDR Low Watermark */
#define QM_EIRQ_MBEI 0x02000000 /* Multi-bit ECC Error */
#define QM_EIRQ_SBEI 0x01000000 /* Single-bit ECC Error */
#define QM_EIRQ_PEBI 0x00800000 /* PFDR Enqueues Blocked Interrupt */
#define QM_EIRQ_IFSI 0x00020000 /* Invalid FQ Flow Control State */
#define QM_EIRQ_ICVI 0x00010000 /* Invalid Command Verb */
#define QM_EIRQ_IDDI 0x00000800 /* Invalid Dequeue (Direct-connect) */
#define QM_EIRQ_IDFI 0x00000400 /* Invalid Dequeue FQ */
#define QM_EIRQ_IDSI 0x00000200 /* Invalid Dequeue Source */
#define QM_EIRQ_IDQI 0x00000100 /* Invalid Dequeue Queue */
#define QM_EIRQ_IECE 0x00000010 /* Invalid Enqueue Configuration */
#define QM_EIRQ_IEOI 0x00000008 /* Invalid Enqueue Overflow */
#define QM_EIRQ_IESI 0x00000004 /* Invalid Enqueue State */
#define QM_EIRQ_IECI 0x00000002 /* Invalid Enqueue Channel */
#define QM_EIRQ_IEQI 0x00000001 /* Invalid Enqueue Queue */
/* QMAN_ECIR valid error bit */
#define PORTAL_ECSR_ERR (QM_EIRQ_IEQI | QM_EIRQ_IESI | QM_EIRQ_IEOI | \
QM_EIRQ_IDQI | QM_EIRQ_IDSI | QM_EIRQ_IDFI | \
QM_EIRQ_IDDI | QM_EIRQ_ICVI | QM_EIRQ_IFSI)
#define FQID_ECSR_ERR (QM_EIRQ_IEQI | QM_EIRQ_IECI | QM_EIRQ_IESI | \
QM_EIRQ_IEOI | QM_EIRQ_IDQI | QM_EIRQ_IDFI | \
QM_EIRQ_IFSI)
struct qm_ecir {
u32 info; /* res[30-31], ptyp[29], pnum[24-28], fqid[0-23] */
};
static bool qm_ecir_is_dcp(const struct qm_ecir *p)
{
return p->info & BIT(29);
}
static int qm_ecir_get_pnum(const struct qm_ecir *p)
{
return (p->info >> 24) & 0x1f;
}
static int qm_ecir_get_fqid(const struct qm_ecir *p)
{
return p->info & (BIT(24) - 1);
}
struct qm_ecir2 {
u32 info; /* ptyp[31], res[10-30], pnum[0-9] */
};
static bool qm_ecir2_is_dcp(const struct qm_ecir2 *p)
{
return p->info & BIT(31);
}
static int qm_ecir2_get_pnum(const struct qm_ecir2 *p)
{
return p->info & (BIT(10) - 1);
}
struct qm_eadr {
u32 info; /* memid[24-27], eadr[0-11] */
/* v3: memid[24-28], eadr[0-15] */
};
static int qm_eadr_get_memid(const struct qm_eadr *p)
{
return (p->info >> 24) & 0xf;
}
static int qm_eadr_get_eadr(const struct qm_eadr *p)
{
return p->info & (BIT(12) - 1);
}
static int qm_eadr_v3_get_memid(const struct qm_eadr *p)
{
return (p->info >> 24) & 0x1f;
}
static int qm_eadr_v3_get_eadr(const struct qm_eadr *p)
{
return p->info & (BIT(16) - 1);
}
struct qman_hwerr_txt {
u32 mask;
const char *txt;
};
static const struct qman_hwerr_txt qman_hwerr_txts[] = {
{ QM_EIRQ_CIDE, "Corenet Initiator Data Error" },
{ QM_EIRQ_CTDE, "Corenet Target Data Error" },
{ QM_EIRQ_CITT, "Corenet Invalid Target Transaction" },
{ QM_EIRQ_PLWI, "PFDR Low Watermark" },
{ QM_EIRQ_MBEI, "Multi-bit ECC Error" },
{ QM_EIRQ_SBEI, "Single-bit ECC Error" },
{ QM_EIRQ_PEBI, "PFDR Enqueues Blocked Interrupt" },
{ QM_EIRQ_ICVI, "Invalid Command Verb" },
{ QM_EIRQ_IFSI, "Invalid Flow Control State" },
{ QM_EIRQ_IDDI, "Invalid Dequeue (Direct-connect)" },
{ QM_EIRQ_IDFI, "Invalid Dequeue FQ" },
{ QM_EIRQ_IDSI, "Invalid Dequeue Source" },
{ QM_EIRQ_IDQI, "Invalid Dequeue Queue" },
{ QM_EIRQ_IECE, "Invalid Enqueue Configuration" },
{ QM_EIRQ_IEOI, "Invalid Enqueue Overflow" },
{ QM_EIRQ_IESI, "Invalid Enqueue State" },
{ QM_EIRQ_IECI, "Invalid Enqueue Channel" },
{ QM_EIRQ_IEQI, "Invalid Enqueue Queue" },
};
struct qman_error_info_mdata {
u16 addr_mask;
u16 bits;
const char *txt;
};
static const struct qman_error_info_mdata error_mdata[] = {
{ 0x01FF, 24, "FQD cache tag memory 0" },
{ 0x01FF, 24, "FQD cache tag memory 1" },
{ 0x01FF, 24, "FQD cache tag memory 2" },
{ 0x01FF, 24, "FQD cache tag memory 3" },
{ 0x0FFF, 512, "FQD cache memory" },
{ 0x07FF, 128, "SFDR memory" },
{ 0x01FF, 72, "WQ context memory" },
{ 0x00FF, 240, "CGR memory" },
{ 0x00FF, 302, "Internal Order Restoration List memory" },
{ 0x01FF, 256, "SW portal ring memory" },
};
#define QMAN_ERRS_TO_DISABLE (QM_EIRQ_PLWI | QM_EIRQ_PEBI)
/*
* TODO: unimplemented registers
*
* Keeping a list here of QMan registers I have not yet covered;
* QCSP_DD_IHRSR, QCSP_DD_IHRFR, QCSP_DD_HASR,
* DCP_DD_IHRSR, DCP_DD_IHRFR, DCP_DD_HASR, CM_CFG,
* QMAN_EECC, QMAN_SBET, QMAN_EINJ, QMAN_SBEC0-12
*/
/* Pointer to the start of the QMan's CCSR space */
static u32 __iomem *qm_ccsr_start;
/* A SDQCR mask comprising all the available/visible pool channels */
static u32 qm_pools_sdqcr;
static inline u32 qm_ccsr_in(u32 offset)
{
return ioread32be(qm_ccsr_start + offset/4);
}
static inline void qm_ccsr_out(u32 offset, u32 val)
{
iowrite32be(val, qm_ccsr_start + offset/4);
}
u32 qm_get_pools_sdqcr(void)
{
return qm_pools_sdqcr;
}
enum qm_dc_portal {
qm_dc_portal_fman0 = 0,
qm_dc_portal_fman1 = 1
};
static void qm_set_dc(enum qm_dc_portal portal, int ed, u8 sernd)
{
DPAA_ASSERT(!ed || portal == qm_dc_portal_fman0 ||
portal == qm_dc_portal_fman1);
if ((qman_ip_rev & 0xFF00) >= QMAN_REV30)
qm_ccsr_out(REG_DCP_CFG(portal),
(ed ? 0x1000 : 0) | (sernd & 0x3ff));
else
qm_ccsr_out(REG_DCP_CFG(portal),
(ed ? 0x100 : 0) | (sernd & 0x1f));
}
static void qm_set_wq_scheduling(enum qm_wq_class wq_class,
u8 cs_elev, u8 csw2, u8 csw3, u8 csw4,
u8 csw5, u8 csw6, u8 csw7)
{
qm_ccsr_out(REG_WQ_CS_CFG(wq_class), ((cs_elev & 0xff) << 24) |
((csw2 & 0x7) << 20) | ((csw3 & 0x7) << 16) |
((csw4 & 0x7) << 12) | ((csw5 & 0x7) << 8) |
((csw6 & 0x7) << 4) | (csw7 & 0x7));
}
static void qm_set_hid(void)
{
qm_ccsr_out(REG_HID_CFG, 0);
}
static void qm_set_corenet_initiator(void)
{
qm_ccsr_out(REG_CI_SCHED_CFG, QM_CI_SCHED_CFG_SRCCIV_EN |
(QM_CI_SCHED_CFG_SRCCIV << 24) |
(QM_CI_SCHED_CFG_SRQ_W << 8) |
(QM_CI_SCHED_CFG_RW_W << 4) |
QM_CI_SCHED_CFG_BMAN_W);
}
static void qm_get_version(u16 *id, u8 *major, u8 *minor)
{
u32 v = qm_ccsr_in(REG_IP_REV_1);
*id = (v >> 16);
*major = (v >> 8) & 0xff;
*minor = v & 0xff;
}
#define PFDR_AR_EN BIT(31)
static void qm_set_memory(enum qm_memory memory, u64 ba, u32 size)
{
u32 offset = (memory == qm_memory_fqd) ? REG_FQD_BARE : REG_PFDR_BARE;
u32 exp = ilog2(size);
/* choke if size isn't within range */
DPAA_ASSERT((size >= 4096) && (size <= 1024*1024*1024) &&
is_power_of_2(size));
/* choke if 'ba' has lower-alignment than 'size' */
DPAA_ASSERT(!(ba & (size - 1)));
qm_ccsr_out(offset, upper_32_bits(ba));
qm_ccsr_out(offset + REG_offset_BAR, lower_32_bits(ba));
qm_ccsr_out(offset + REG_offset_AR, PFDR_AR_EN | (exp - 1));
}
static void qm_set_pfdr_threshold(u32 th, u8 k)
{
qm_ccsr_out(REG_PFDR_FP_LWIT, th & 0xffffff);
qm_ccsr_out(REG_PFDR_CFG, k);
}
static void qm_set_sfdr_threshold(u16 th)
{
qm_ccsr_out(REG_SFDR_CFG, th & 0x3ff);
}
static int qm_init_pfdr(struct device *dev, u32 pfdr_start, u32 num)
{
u8 rslt = MCR_get_rslt(qm_ccsr_in(REG_MCR));
DPAA_ASSERT(pfdr_start && !(pfdr_start & 7) && !(num & 7) && num);
/* Make sure the command interface is 'idle' */
if (!MCR_rslt_idle(rslt)) {
dev_crit(dev, "QMAN_MCR isn't idle");
WARN_ON(1);
}
/* Write the MCR command params then the verb */
qm_ccsr_out(REG_MCP(0), pfdr_start);
/*
* TODO: remove this - it's a workaround for a model bug that is
* corrected in more recent versions. We use the workaround until
* everyone has upgraded.
*/
qm_ccsr_out(REG_MCP(1), pfdr_start + num - 16);
dma_wmb();
qm_ccsr_out(REG_MCR, MCR_INIT_PFDR);
/* Poll for the result */
do {
rslt = MCR_get_rslt(qm_ccsr_in(REG_MCR));
} while (!MCR_rslt_idle(rslt));
if (MCR_rslt_ok(rslt))
return 0;
if (MCR_rslt_eaccess(rslt))
return -EACCES;
if (MCR_rslt_inval(rslt))
return -EINVAL;
dev_crit(dev, "Unexpected result from MCR_INIT_PFDR: %02x\n", rslt);
return -ENODEV;
}
/*
* Ideally we would use the DMA API to turn rmem->base into a DMA address
* (especially if iommu translations ever get involved). Unfortunately, the
* DMA API currently does not allow mapping anything that is not backed with
* a struct page.
*/
static dma_addr_t fqd_a, pfdr_a;
static size_t fqd_sz, pfdr_sz;
static int qman_fqd(struct reserved_mem *rmem)
{
fqd_a = rmem->base;
fqd_sz = rmem->size;
WARN_ON(!(fqd_a && fqd_sz));
return 0;
}
RESERVEDMEM_OF_DECLARE(qman_fqd, "fsl,qman-fqd", qman_fqd);
static int qman_pfdr(struct reserved_mem *rmem)
{
pfdr_a = rmem->base;
pfdr_sz = rmem->size;
WARN_ON(!(pfdr_a && pfdr_sz));
return 0;
}
RESERVEDMEM_OF_DECLARE(qman_pfdr, "fsl,qman-pfdr", qman_pfdr);
static unsigned int qm_get_fqid_maxcnt(void)
{
return fqd_sz / 64;
}
/*
* Flush this memory range from data cache so that QMAN originated
* transactions for this memory region could be marked non-coherent.
*/
static int zero_priv_mem(struct device *dev, struct device_node *node,
phys_addr_t addr, size_t sz)
{
/* map as cacheable, non-guarded */
void __iomem *tmpp = ioremap_prot(addr, sz, 0);
memset_io(tmpp, 0, sz);
flush_dcache_range((unsigned long)tmpp,
(unsigned long)tmpp + sz);
iounmap(tmpp);
return 0;
}
static void log_edata_bits(struct device *dev, u32 bit_count)
{
u32 i, j, mask = 0xffffffff;
dev_warn(dev, "ErrInt, EDATA:\n");
i = bit_count / 32;
if (bit_count % 32) {
i++;
mask = ~(mask << bit_count % 32);
}
j = 16 - i;
dev_warn(dev, " 0x%08x\n", qm_ccsr_in(REG_EDATA(j)) & mask);
j++;
for (; j < 16; j++)
dev_warn(dev, " 0x%08x\n", qm_ccsr_in(REG_EDATA(j)));
}
static void log_additional_error_info(struct device *dev, u32 isr_val,
u32 ecsr_val)
{
struct qm_ecir ecir_val;
struct qm_eadr eadr_val;
int memid;
ecir_val.info = qm_ccsr_in(REG_ECIR);
/* Is portal info valid */
if ((qman_ip_rev & 0xFF00) >= QMAN_REV30) {
struct qm_ecir2 ecir2_val;
ecir2_val.info = qm_ccsr_in(REG_ECIR2);
if (ecsr_val & PORTAL_ECSR_ERR) {
dev_warn(dev, "ErrInt: %s id %d\n",
qm_ecir2_is_dcp(&ecir2_val) ? "DCP" : "SWP",
qm_ecir2_get_pnum(&ecir2_val));
}
if (ecsr_val & (FQID_ECSR_ERR | QM_EIRQ_IECE))
dev_warn(dev, "ErrInt: ecir.fqid 0x%x\n",
qm_ecir_get_fqid(&ecir_val));
if (ecsr_val & (QM_EIRQ_SBEI|QM_EIRQ_MBEI)) {
eadr_val.info = qm_ccsr_in(REG_EADR);
memid = qm_eadr_v3_get_memid(&eadr_val);
dev_warn(dev, "ErrInt: EADR Memory: %s, 0x%x\n",
error_mdata[memid].txt,
error_mdata[memid].addr_mask
& qm_eadr_v3_get_eadr(&eadr_val));
log_edata_bits(dev, error_mdata[memid].bits);
}
} else {
if (ecsr_val & PORTAL_ECSR_ERR) {
dev_warn(dev, "ErrInt: %s id %d\n",
qm_ecir_is_dcp(&ecir_val) ? "DCP" : "SWP",
qm_ecir_get_pnum(&ecir_val));
}
if (ecsr_val & FQID_ECSR_ERR)
dev_warn(dev, "ErrInt: ecir.fqid 0x%x\n",
qm_ecir_get_fqid(&ecir_val));
if (ecsr_val & (QM_EIRQ_SBEI|QM_EIRQ_MBEI)) {
eadr_val.info = qm_ccsr_in(REG_EADR);
memid = qm_eadr_get_memid(&eadr_val);
dev_warn(dev, "ErrInt: EADR Memory: %s, 0x%x\n",
error_mdata[memid].txt,
error_mdata[memid].addr_mask
& qm_eadr_get_eadr(&eadr_val));
log_edata_bits(dev, error_mdata[memid].bits);
}
}
}
static irqreturn_t qman_isr(int irq, void *ptr)
{
u32 isr_val, ier_val, ecsr_val, isr_mask, i;
struct device *dev = ptr;
ier_val = qm_ccsr_in(REG_ERR_IER);
isr_val = qm_ccsr_in(REG_ERR_ISR);
ecsr_val = qm_ccsr_in(REG_ECSR);
isr_mask = isr_val & ier_val;
if (!isr_mask)
return IRQ_NONE;
for (i = 0; i < ARRAY_SIZE(qman_hwerr_txts); i++) {
if (qman_hwerr_txts[i].mask & isr_mask) {
dev_err_ratelimited(dev, "ErrInt: %s\n",
qman_hwerr_txts[i].txt);
if (qman_hwerr_txts[i].mask & ecsr_val) {
log_additional_error_info(dev, isr_mask,
ecsr_val);
/* Re-arm error capture registers */
qm_ccsr_out(REG_ECSR, ecsr_val);
}
if (qman_hwerr_txts[i].mask & QMAN_ERRS_TO_DISABLE) {
dev_dbg(dev, "Disabling error 0x%x\n",
qman_hwerr_txts[i].mask);
ier_val &= ~qman_hwerr_txts[i].mask;
qm_ccsr_out(REG_ERR_IER, ier_val);
}
}
}
qm_ccsr_out(REG_ERR_ISR, isr_val);
return IRQ_HANDLED;
}
static int qman_init_ccsr(struct device *dev)
{
int i, err;
/* FQD memory */
qm_set_memory(qm_memory_fqd, fqd_a, fqd_sz);
/* PFDR memory */
qm_set_memory(qm_memory_pfdr, pfdr_a, pfdr_sz);
err = qm_init_pfdr(dev, 8, pfdr_sz / 64 - 8);
if (err)
return err;
/* thresholds */
qm_set_pfdr_threshold(512, 64);
qm_set_sfdr_threshold(128);
/* clear stale PEBI bit from interrupt status register */
qm_ccsr_out(REG_ERR_ISR, QM_EIRQ_PEBI);
/* corenet initiator settings */
qm_set_corenet_initiator();
/* HID settings */
qm_set_hid();
/* Set scheduling weights to defaults */
for (i = qm_wq_first; i <= qm_wq_last; i++)
qm_set_wq_scheduling(i, 0, 0, 0, 0, 0, 0, 0);
/* We are not prepared to accept ERNs for hardware enqueues */
qm_set_dc(qm_dc_portal_fman0, 1, 0);
qm_set_dc(qm_dc_portal_fman1, 1, 0);
return 0;
}
#define LIO_CFG_LIODN_MASK 0x0fff0000
void qman_liodn_fixup(u16 channel)
{
static int done;
static u32 liodn_offset;
u32 before, after;
int idx = channel - QM_CHANNEL_SWPORTAL0;
if ((qman_ip_rev & 0xFF00) >= QMAN_REV30)
before = qm_ccsr_in(REG_REV3_QCSP_LIO_CFG(idx));
else
before = qm_ccsr_in(REG_QCSP_LIO_CFG(idx));
if (!done) {
liodn_offset = before & LIO_CFG_LIODN_MASK;
done = 1;
return;
}
after = (before & (~LIO_CFG_LIODN_MASK)) | liodn_offset;
if ((qman_ip_rev & 0xFF00) >= QMAN_REV30)
qm_ccsr_out(REG_REV3_QCSP_LIO_CFG(idx), after);
else
qm_ccsr_out(REG_QCSP_LIO_CFG(idx), after);
}
#define IO_CFG_SDEST_MASK 0x00ff0000
void qman_set_sdest(u16 channel, unsigned int cpu_idx)
{
int idx = channel - QM_CHANNEL_SWPORTAL0;
u32 before, after;
if ((qman_ip_rev & 0xFF00) >= QMAN_REV30) {
before = qm_ccsr_in(REG_REV3_QCSP_IO_CFG(idx));
/* Each pair of vcpu share the same SRQ(SDEST) */
cpu_idx /= 2;
after = (before & (~IO_CFG_SDEST_MASK)) | (cpu_idx << 16);
qm_ccsr_out(REG_REV3_QCSP_IO_CFG(idx), after);
} else {
before = qm_ccsr_in(REG_QCSP_IO_CFG(idx));
after = (before & (~IO_CFG_SDEST_MASK)) | (cpu_idx << 16);
qm_ccsr_out(REG_QCSP_IO_CFG(idx), after);
}
}
static int qman_resource_init(struct device *dev)
{
int pool_chan_num, cgrid_num;
int ret, i;
switch (qman_ip_rev >> 8) {
case 1:
pool_chan_num = 15;
cgrid_num = 256;
break;
case 2:
pool_chan_num = 3;
cgrid_num = 64;
break;
case 3:
pool_chan_num = 15;
cgrid_num = 256;
break;
default:
return -ENODEV;
}
ret = gen_pool_add(qm_qpalloc, qm_channel_pool1 | DPAA_GENALLOC_OFF,
pool_chan_num, -1);
if (ret) {
dev_err(dev, "Failed to seed pool channels (%d)\n", ret);
return ret;
}
ret = gen_pool_add(qm_cgralloc, DPAA_GENALLOC_OFF, cgrid_num, -1);
if (ret) {
dev_err(dev, "Failed to seed CGRID range (%d)\n", ret);
return ret;
}
/* parse pool channels into the SDQCR mask */
for (i = 0; i < cgrid_num; i++)
qm_pools_sdqcr |= QM_SDQCR_CHANNELS_POOL_CONV(i);
ret = gen_pool_add(qm_fqalloc, QM_FQID_RANGE_START | DPAA_GENALLOC_OFF,
qm_get_fqid_maxcnt() - QM_FQID_RANGE_START, -1);
if (ret) {
dev_err(dev, "Failed to seed FQID range (%d)\n", ret);
return ret;
}
return 0;
}
static int fsl_qman_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct device_node *node = dev->of_node;
struct resource *res;
int ret, err_irq;
u16 id;
u8 major, minor;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!res) {
dev_err(dev, "Can't get %s property 'IORESOURCE_MEM'\n",
node->full_name);
return -ENXIO;
}
qm_ccsr_start = devm_ioremap(dev, res->start, resource_size(res));
if (!qm_ccsr_start)
return -ENXIO;
qm_get_version(&id, &major, &minor);
if (major == 1 && minor == 0) {
dev_err(dev, "Rev1.0 on P4080 rev1 is not supported!\n");
return -ENODEV;
} else if (major == 1 && minor == 1)
qman_ip_rev = QMAN_REV11;
else if (major == 1 && minor == 2)
qman_ip_rev = QMAN_REV12;
else if (major == 2 && minor == 0)
qman_ip_rev = QMAN_REV20;
else if (major == 3 && minor == 0)
qman_ip_rev = QMAN_REV30;
else if (major == 3 && minor == 1)
qman_ip_rev = QMAN_REV31;
else {
dev_err(dev, "Unknown QMan version\n");
return -ENODEV;
}
if ((qman_ip_rev & 0xff00) >= QMAN_REV30)
qm_channel_pool1 = QMAN_CHANNEL_POOL1_REV3;
ret = zero_priv_mem(dev, node, fqd_a, fqd_sz);
WARN_ON(ret);
if (ret)
return -ENODEV;
ret = qman_init_ccsr(dev);
if (ret) {
dev_err(dev, "CCSR setup failed\n");
return ret;
}
err_irq = platform_get_irq(pdev, 0);
if (err_irq <= 0) {
dev_info(dev, "Can't get %s property 'interrupts'\n",
node->full_name);
return -ENODEV;
}
ret = devm_request_irq(dev, err_irq, qman_isr, IRQF_SHARED, "qman-err",
dev);
if (ret) {
dev_err(dev, "devm_request_irq() failed %d for '%s'\n",
ret, node->full_name);
return ret;
}
/*
* Write-to-clear any stale bits, (eg. starvation being asserted prior
* to resource allocation during driver init).
*/
qm_ccsr_out(REG_ERR_ISR, 0xffffffff);
/* Enable Error Interrupts */
qm_ccsr_out(REG_ERR_IER, 0xffffffff);
qm_fqalloc = devm_gen_pool_create(dev, 0, -1, "qman-fqalloc");
if (IS_ERR(qm_fqalloc)) {
ret = PTR_ERR(qm_fqalloc);
dev_err(dev, "qman-fqalloc pool init failed (%d)\n", ret);
return ret;
}
qm_qpalloc = devm_gen_pool_create(dev, 0, -1, "qman-qpalloc");
if (IS_ERR(qm_qpalloc)) {
ret = PTR_ERR(qm_qpalloc);
dev_err(dev, "qman-qpalloc pool init failed (%d)\n", ret);
return ret;
}
qm_cgralloc = devm_gen_pool_create(dev, 0, -1, "qman-cgralloc");
if (IS_ERR(qm_cgralloc)) {
ret = PTR_ERR(qm_cgralloc);
dev_err(dev, "qman-cgralloc pool init failed (%d)\n", ret);
return ret;
}
ret = qman_resource_init(dev);
if (ret)
return ret;
ret = qman_alloc_fq_table(qm_get_fqid_maxcnt());
if (ret)
return ret;
ret = qman_wq_alloc();
if (ret)
return ret;
return 0;
}
static const struct of_device_id fsl_qman_ids[] = {
{
.compatible = "fsl,qman",
},
{}
};
static struct platform_driver fsl_qman_driver = {
.driver = {
.name = KBUILD_MODNAME,
.of_match_table = fsl_qman_ids,
.suppress_bind_attrs = true,
},
.probe = fsl_qman_probe,
};
builtin_platform_driver(fsl_qman_driver);

355
drivers/soc/fsl/qbman/qman_portal.c Normal file
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@ -0,0 +1,355 @@
/* Copyright 2008 - 2016 Freescale Semiconductor, Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of Freescale Semiconductor nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* ALTERNATIVELY, this software may be distributed under the terms of the
* GNU General Public License ("GPL") as published by the Free Software
* Foundation, either version 2 of that License or (at your option) any
* later version.
*
* THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "qman_priv.h"
/* Enable portal interupts (as opposed to polling mode) */
#define CONFIG_FSL_DPA_PIRQ_SLOW 1
#define CONFIG_FSL_DPA_PIRQ_FAST 1
static struct cpumask portal_cpus;
/* protect qman global registers and global data shared among portals */
static DEFINE_SPINLOCK(qman_lock);
static void portal_set_cpu(struct qm_portal_config *pcfg, int cpu)
{
#ifdef CONFIG_FSL_PAMU
struct device *dev = pcfg->dev;
int window_count = 1;
struct iommu_domain_geometry geom_attr;
struct pamu_stash_attribute stash_attr;
int ret;
pcfg->iommu_domain = iommu_domain_alloc(&platform_bus_type);
if (!pcfg->iommu_domain) {
dev_err(dev, "%s(): iommu_domain_alloc() failed", __func__);
goto no_iommu;
}
geom_attr.aperture_start = 0;
geom_attr.aperture_end =
((dma_addr_t)1 << min(8 * sizeof(dma_addr_t), (size_t)36)) - 1;
geom_attr.force_aperture = true;
ret = iommu_domain_set_attr(pcfg->iommu_domain, DOMAIN_ATTR_GEOMETRY,
&geom_attr);
if (ret < 0) {
dev_err(dev, "%s(): iommu_domain_set_attr() = %d", __func__,
ret);
goto out_domain_free;
}
ret = iommu_domain_set_attr(pcfg->iommu_domain, DOMAIN_ATTR_WINDOWS,
&window_count);
if (ret < 0) {
dev_err(dev, "%s(): iommu_domain_set_attr() = %d", __func__,
ret);
goto out_domain_free;
}
stash_attr.cpu = cpu;
stash_attr.cache = PAMU_ATTR_CACHE_L1;
ret = iommu_domain_set_attr(pcfg->iommu_domain,
DOMAIN_ATTR_FSL_PAMU_STASH,
&stash_attr);
if (ret < 0) {
dev_err(dev, "%s(): iommu_domain_set_attr() = %d",
__func__, ret);
goto out_domain_free;
}
ret = iommu_domain_window_enable(pcfg->iommu_domain, 0, 0, 1ULL << 36,
IOMMU_READ | IOMMU_WRITE);
if (ret < 0) {
dev_err(dev, "%s(): iommu_domain_window_enable() = %d",
__func__, ret);
goto out_domain_free;
}
ret = iommu_attach_device(pcfg->iommu_domain, dev);
if (ret < 0) {
dev_err(dev, "%s(): iommu_device_attach() = %d", __func__,
ret);
goto out_domain_free;
}
ret = iommu_domain_set_attr(pcfg->iommu_domain,
DOMAIN_ATTR_FSL_PAMU_ENABLE,
&window_count);
if (ret < 0) {
dev_err(dev, "%s(): iommu_domain_set_attr() = %d", __func__,
ret);
goto out_detach_device;
}
no_iommu:
#endif
qman_set_sdest(pcfg->channel, cpu);
return;
#ifdef CONFIG_FSL_PAMU
out_detach_device:
iommu_detach_device(pcfg->iommu_domain, NULL);
out_domain_free:
iommu_domain_free(pcfg->iommu_domain);
pcfg->iommu_domain = NULL;
#endif
}
static struct qman_portal *init_pcfg(struct qm_portal_config *pcfg)
{
struct qman_portal *p;
u32 irq_sources = 0;
/* We need the same LIODN offset for all portals */
qman_liodn_fixup(pcfg->channel);
pcfg->iommu_domain = NULL;
portal_set_cpu(pcfg, pcfg->cpu);
p = qman_create_affine_portal(pcfg, NULL);
if (!p) {
dev_crit(pcfg->dev, "%s: Portal failure on cpu %d\n",
__func__, pcfg->cpu);
return NULL;
}
/* Determine what should be interrupt-vs-poll driven */
#ifdef CONFIG_FSL_DPA_PIRQ_SLOW
irq_sources |= QM_PIRQ_EQCI | QM_PIRQ_EQRI | QM_PIRQ_MRI |
QM_PIRQ_CSCI;
#endif
#ifdef CONFIG_FSL_DPA_PIRQ_FAST
irq_sources |= QM_PIRQ_DQRI;
#endif
qman_p_irqsource_add(p, irq_sources);
spin_lock(&qman_lock);
if (cpumask_equal(&portal_cpus, cpu_possible_mask)) {
/* all assigned portals are initialized now */
qman_init_cgr_all();
}
spin_unlock(&qman_lock);
dev_info(pcfg->dev, "Portal initialised, cpu %d\n", pcfg->cpu);
return p;
}
static void qman_portal_update_sdest(const struct qm_portal_config *pcfg,
unsigned int cpu)
{
#ifdef CONFIG_FSL_PAMU /* TODO */
struct pamu_stash_attribute stash_attr;
int ret;
if (pcfg->iommu_domain) {
stash_attr.cpu = cpu;
stash_attr.cache = PAMU_ATTR_CACHE_L1;
ret = iommu_domain_set_attr(pcfg->iommu_domain,
DOMAIN_ATTR_FSL_PAMU_STASH, &stash_attr);
if (ret < 0) {
dev_err(pcfg->dev,
"Failed to update pamu stash setting\n");
return;
}
}
#endif
qman_set_sdest(pcfg->channel, cpu);
}
static void qman_offline_cpu(unsigned int cpu)
{
struct qman_portal *p;
const struct qm_portal_config *pcfg;
p = affine_portals[cpu];
if (p) {
pcfg = qman_get_qm_portal_config(p);
if (pcfg) {
irq_set_affinity(pcfg->irq, cpumask_of(0));
qman_portal_update_sdest(pcfg, 0);
}
}
}
static void qman_online_cpu(unsigned int cpu)
{
struct qman_portal *p;
const struct qm_portal_config *pcfg;
p = affine_portals[cpu];
if (p) {
pcfg = qman_get_qm_portal_config(p);
if (pcfg) {
irq_set_affinity(pcfg->irq, cpumask_of(cpu));
qman_portal_update_sdest(pcfg, cpu);
}
}
}
static int qman_hotplug_cpu_callback(struct notifier_block *nfb,
unsigned long action, void *hcpu)
{
unsigned int cpu = (unsigned long)hcpu;
switch (action) {
case CPU_ONLINE:
case CPU_ONLINE_FROZEN:
qman_online_cpu(cpu);
break;
case CPU_DOWN_PREPARE:
case CPU_DOWN_PREPARE_FROZEN:
qman_offline_cpu(cpu);
default:
break;
}
return NOTIFY_OK;
}
static struct notifier_block qman_hotplug_cpu_notifier = {
.notifier_call = qman_hotplug_cpu_callback,
};
static int qman_portal_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct device_node *node = dev->of_node;
struct qm_portal_config *pcfg;
struct resource *addr_phys[2];
const u32 *channel;
void __iomem *va;
int irq, len, cpu;
pcfg = devm_kmalloc(dev, sizeof(*pcfg), GFP_KERNEL);
if (!pcfg)
return -ENOMEM;
pcfg->dev = dev;
addr_phys[0] = platform_get_resource(pdev, IORESOURCE_MEM,
DPAA_PORTAL_CE);
if (!addr_phys[0]) {
dev_err(dev, "Can't get %s property 'reg::CE'\n",
node->full_name);
return -ENXIO;
}
addr_phys[1] = platform_get_resource(pdev, IORESOURCE_MEM,
DPAA_PORTAL_CI);
if (!addr_phys[1]) {
dev_err(dev, "Can't get %s property 'reg::CI'\n",
node->full_name);
return -ENXIO;
}
channel = of_get_property(node, "cell-index", &len);
if (!channel || (len != 4)) {
dev_err(dev, "Can't get %s property 'cell-index'\n",
node->full_name);
return -ENXIO;
}
pcfg->channel = *channel;
pcfg->cpu = -1;
irq = platform_get_irq(pdev, 0);
if (irq <= 0) {
dev_err(dev, "Can't get %s IRQ\n", node->full_name);
return -ENXIO;
}
pcfg->irq = irq;
va = ioremap_prot(addr_phys[0]->start, resource_size(addr_phys[0]), 0);
if (!va)
goto err_ioremap1;
pcfg->addr_virt[DPAA_PORTAL_CE] = va;
va = ioremap_prot(addr_phys[1]->start, resource_size(addr_phys[1]),
_PAGE_GUARDED | _PAGE_NO_CACHE);
if (!va)
goto err_ioremap2;
pcfg->addr_virt[DPAA_PORTAL_CI] = va;
pcfg->pools = qm_get_pools_sdqcr();
spin_lock(&qman_lock);
cpu = cpumask_next_zero(-1, &portal_cpus);
if (cpu >= nr_cpu_ids) {
/* unassigned portal, skip init */
spin_unlock(&qman_lock);
return 0;
}
cpumask_set_cpu(cpu, &portal_cpus);
spin_unlock(&qman_lock);
pcfg->cpu = cpu;
if (!init_pcfg(pcfg))
goto err_ioremap2;
/* clear irq affinity if assigned cpu is offline */
if (!cpu_online(cpu))
qman_offline_cpu(cpu);
return 0;
err_ioremap2:
iounmap(pcfg->addr_virt[DPAA_PORTAL_CE]);
err_ioremap1:
dev_err(dev, "ioremap failed\n");
return -ENXIO;
}
static const struct of_device_id qman_portal_ids[] = {
{
.compatible = "fsl,qman-portal",
},
{}
};
MODULE_DEVICE_TABLE(of, qman_portal_ids);
static struct platform_driver qman_portal_driver = {
.driver = {
.name = KBUILD_MODNAME,
.of_match_table = qman_portal_ids,
},
.probe = qman_portal_probe,
};
static int __init qman_portal_driver_register(struct platform_driver *drv)
{
int ret;
ret = platform_driver_register(drv);
if (ret < 0)
return ret;
register_hotcpu_notifier(&qman_hotplug_cpu_notifier);
return 0;
}
module_driver(qman_portal_driver,
qman_portal_driver_register, platform_driver_unregister);

371
drivers/soc/fsl/qbman/qman_priv.h Normal file
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@ -0,0 +1,371 @@
/* Copyright 2008 - 2016 Freescale Semiconductor, Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of Freescale Semiconductor nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* ALTERNATIVELY, this software may be distributed under the terms of the
* GNU General Public License ("GPL") as published by the Free Software
* Foundation, either version 2 of that License or (at your option) any
* later version.
*
* THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include "dpaa_sys.h"
#include <soc/fsl/qman.h>
#include <linux/iommu.h>
#if defined(CONFIG_FSL_PAMU)
#include <asm/fsl_pamu_stash.h>
#endif
struct qm_mcr_querywq {
u8 verb;
u8 result;
u16 channel_wq; /* ignores wq (3 lsbits): _res[0-2] */
u8 __reserved[28];
u32 wq_len[8];
} __packed;
static inline u16 qm_mcr_querywq_get_chan(const struct qm_mcr_querywq *wq)
{
return wq->channel_wq >> 3;
}
struct __qm_mcr_querycongestion {
u32 state[8];
};
/* "Query Congestion Group State" */
struct qm_mcr_querycongestion {
u8 verb;
u8 result;
u8 __reserved[30];
/* Access this struct using qman_cgrs_get() */
struct __qm_mcr_querycongestion state;
} __packed;
/* "Query CGR" */
struct qm_mcr_querycgr {
u8 verb;
u8 result;
u16 __reserved1;
struct __qm_mc_cgr cgr; /* CGR fields */
u8 __reserved2[6];
u8 i_bcnt_hi; /* high 8-bits of 40-bit "Instant" */
u32 i_bcnt_lo; /* low 32-bits of 40-bit */
u8 __reserved3[3];
u8 a_bcnt_hi; /* high 8-bits of 40-bit "Average" */
u32 a_bcnt_lo; /* low 32-bits of 40-bit */
u32 cscn_targ_swp[4];
} __packed;
static inline u64 qm_mcr_querycgr_i_get64(const struct qm_mcr_querycgr *q)
{
return ((u64)q->i_bcnt_hi << 32) | (u64)q->i_bcnt_lo;
}
static inline u64 qm_mcr_querycgr_a_get64(const struct qm_mcr_querycgr *q)
{
return ((u64)q->a_bcnt_hi << 32) | (u64)q->a_bcnt_lo;
}
/* "Query FQ Non-Programmable Fields" */
struct qm_mcc_queryfq_np {
u8 _ncw_verb;
u8 __reserved1[3];
u32 fqid; /* 24-bit */
u8 __reserved2[56];
} __packed;
struct qm_mcr_queryfq_np {
u8 verb;
u8 result;
u8 __reserved1;
u8 state; /* QM_MCR_NP_STATE_*** */
u32 fqd_link; /* 24-bit, _res2[24-31] */
u16 odp_seq; /* 14-bit, _res3[14-15] */
u16 orp_nesn; /* 14-bit, _res4[14-15] */
u16 orp_ea_hseq; /* 15-bit, _res5[15] */
u16 orp_ea_tseq; /* 15-bit, _res6[15] */
u32 orp_ea_hptr; /* 24-bit, _res7[24-31] */
u32 orp_ea_tptr; /* 24-bit, _res8[24-31] */
u32 pfdr_hptr; /* 24-bit, _res9[24-31] */
u32 pfdr_tptr; /* 24-bit, _res10[24-31] */
u8 __reserved2[5];
u8 is; /* 1-bit, _res12[1-7] */
u16 ics_surp;
u32 byte_cnt;
u32 frm_cnt; /* 24-bit, _res13[24-31] */
u32 __reserved3;
u16 ra1_sfdr; /* QM_MCR_NP_RA1_*** */
u16 ra2_sfdr; /* QM_MCR_NP_RA2_*** */
u16 __reserved4;
u16 od1_sfdr; /* QM_MCR_NP_OD1_*** */
u16 od2_sfdr; /* QM_MCR_NP_OD2_*** */
u16 od3_sfdr; /* QM_MCR_NP_OD3_*** */
} __packed;
#define QM_MCR_NP_STATE_FE 0x10
#define QM_MCR_NP_STATE_R 0x08
#define QM_MCR_NP_STATE_MASK 0x07 /* Reads FQD::STATE; */
#define QM_MCR_NP_STATE_OOS 0x00
#define QM_MCR_NP_STATE_RETIRED 0x01
#define QM_MCR_NP_STATE_TEN_SCHED 0x02
#define QM_MCR_NP_STATE_TRU_SCHED 0x03
#define QM_MCR_NP_STATE_PARKED 0x04
#define QM_MCR_NP_STATE_ACTIVE 0x05
#define QM_MCR_NP_PTR_MASK 0x07ff /* for RA[12] & OD[123] */
#define QM_MCR_NP_RA1_NRA(v) (((v) >> 14) & 0x3) /* FQD::NRA */
#define QM_MCR_NP_RA2_IT(v) (((v) >> 14) & 0x1) /* FQD::IT */
#define QM_MCR_NP_OD1_NOD(v) (((v) >> 14) & 0x3) /* FQD::NOD */
#define QM_MCR_NP_OD3_NPC(v) (((v) >> 14) & 0x3) /* FQD::NPC */
enum qm_mcr_queryfq_np_masks {
qm_mcr_fqd_link_mask = BIT(24)-1,
qm_mcr_odp_seq_mask = BIT(14)-1,
qm_mcr_orp_nesn_mask = BIT(14)-1,
qm_mcr_orp_ea_hseq_mask = BIT(15)-1,
qm_mcr_orp_ea_tseq_mask = BIT(15)-1,
qm_mcr_orp_ea_hptr_mask = BIT(24)-1,
qm_mcr_orp_ea_tptr_mask = BIT(24)-1,
qm_mcr_pfdr_hptr_mask = BIT(24)-1,
qm_mcr_pfdr_tptr_mask = BIT(24)-1,
qm_mcr_is_mask = BIT(1)-1,
qm_mcr_frm_cnt_mask = BIT(24)-1,
};
#define qm_mcr_np_get(np, field) \
((np)->field & (qm_mcr_##field##_mask))
/* Congestion Groups */
/*
* This wrapper represents a bit-array for the state of the 256 QMan congestion
* groups. Is also used as a *mask* for congestion groups, eg. so we ignore
* those that don't concern us. We harness the structure and accessor details
* already used in the management command to query congestion groups.
*/
#define CGR_BITS_PER_WORD 5
#define CGR_WORD(x) ((x) >> CGR_BITS_PER_WORD)
#define CGR_BIT(x) (BIT(31) >> ((x) & 0x1f))
#define CGR_NUM (sizeof(struct __qm_mcr_querycongestion) << 3)
struct qman_cgrs {
struct __qm_mcr_querycongestion q;
};
static inline void qman_cgrs_init(struct qman_cgrs *c)
{
memset(c, 0, sizeof(*c));
}
static inline void qman_cgrs_fill(struct qman_cgrs *c)
{
memset(c, 0xff, sizeof(*c));
}
static inline int qman_cgrs_get(struct qman_cgrs *c, u8 cgr)
{
return c->q.state[CGR_WORD(cgr)] & CGR_BIT(cgr);
}
static inline void qman_cgrs_cp(struct qman_cgrs *dest,
const struct qman_cgrs *src)
{
*dest = *src;
}
static inline void qman_cgrs_and(struct qman_cgrs *dest,
const struct qman_cgrs *a, const struct qman_cgrs *b)
{
int ret;
u32 *_d = dest->q.state;
const u32 *_a = a->q.state;
const u32 *_b = b->q.state;
for (ret = 0; ret < 8; ret++)
*_d++ = *_a++ & *_b++;
}
static inline void qman_cgrs_xor(struct qman_cgrs *dest,
const struct qman_cgrs *a, const struct qman_cgrs *b)
{
int ret;
u32 *_d = dest->q.state;
const u32 *_a = a->q.state;
const u32 *_b = b->q.state;
for (ret = 0; ret < 8; ret++)
*_d++ = *_a++ ^ *_b++;
}
void qman_init_cgr_all(void);
struct qm_portal_config {
/*
* Corenet portal addresses;
* [0]==cache-enabled, [1]==cache-inhibited.
*/
void __iomem *addr_virt[2];
struct device *dev;
struct iommu_domain *iommu_domain;
/* Allow these to be joined in lists */
struct list_head list;
/* User-visible portal configuration settings */
/* portal is affined to this cpu */
int cpu;
/* portal interrupt line */
int irq;
/*
* the portal's dedicated channel id, used initialising
* frame queues to target this portal when scheduled
*/
u16 channel;
/*
* mask of pool channels this portal has dequeue access to
* (using QM_SDQCR_CHANNELS_POOL(n) for the bitmask)
*/
u32 pools;
};
/* Revision info (for errata and feature handling) */
#define QMAN_REV11 0x0101
#define QMAN_REV12 0x0102
#define QMAN_REV20 0x0200
#define QMAN_REV30 0x0300
#define QMAN_REV31 0x0301
extern u16 qman_ip_rev; /* 0 if uninitialised, otherwise QMAN_REVx */
#define QM_FQID_RANGE_START 1 /* FQID 0 reserved for internal use */
extern struct gen_pool *qm_fqalloc; /* FQID allocator */
extern struct gen_pool *qm_qpalloc; /* pool-channel allocator */
extern struct gen_pool *qm_cgralloc; /* CGR ID allocator */
u32 qm_get_pools_sdqcr(void);
int qman_wq_alloc(void);
void qman_liodn_fixup(u16 channel);
void qman_set_sdest(u16 channel, unsigned int cpu_idx);
struct qman_portal *qman_create_affine_portal(
const struct qm_portal_config *config,
const struct qman_cgrs *cgrs);
const struct qm_portal_config *qman_destroy_affine_portal(void);
/*
* qman_query_fq - Queries FQD fields (via h/w query command)
* @fq: the frame queue object to be queried
* @fqd: storage for the queried FQD fields
*/
int qman_query_fq(struct qman_fq *fq, struct qm_fqd *fqd);
/*
* For qman_volatile_dequeue(); Choose one PRECEDENCE. EXACT is optional. Use
* NUMFRAMES(n) (6-bit) or NUMFRAMES_TILLEMPTY to fill in the frame-count. Use
* FQID(n) to fill in the frame queue ID.
*/
#define QM_VDQCR_PRECEDENCE_VDQCR 0x0
#define QM_VDQCR_PRECEDENCE_SDQCR 0x80000000
#define QM_VDQCR_EXACT 0x40000000
#define QM_VDQCR_NUMFRAMES_MASK 0x3f000000
#define QM_VDQCR_NUMFRAMES_SET(n) (((n) & 0x3f) << 24)
#define QM_VDQCR_NUMFRAMES_GET(n) (((n) >> 24) & 0x3f)
#define QM_VDQCR_NUMFRAMES_TILLEMPTY QM_VDQCR_NUMFRAMES_SET(0)
#define QMAN_VOLATILE_FLAG_WAIT 0x00000001 /* wait if VDQCR is in use */
#define QMAN_VOLATILE_FLAG_WAIT_INT 0x00000002 /* if wait, interruptible? */
#define QMAN_VOLATILE_FLAG_FINISH 0x00000004 /* wait till VDQCR completes */
/*
* qman_volatile_dequeue - Issue a volatile dequeue command
* @fq: the frame queue object to dequeue from
* @flags: a bit-mask of QMAN_VOLATILE_FLAG_*** options
* @vdqcr: bit mask of QM_VDQCR_*** options, as per qm_dqrr_vdqcr_set()
*
* Attempts to lock access to the portal's VDQCR volatile dequeue functionality.
* The function will block and sleep if QMAN_VOLATILE_FLAG_WAIT is specified and
* the VDQCR is already in use, otherwise returns non-zero for failure. If
* QMAN_VOLATILE_FLAG_FINISH is specified, the function will only return once
* the VDQCR command has finished executing (ie. once the callback for the last
* DQRR entry resulting from the VDQCR command has been called). If not using
* the FINISH flag, completion can be determined either by detecting the
* presence of the QM_DQRR_STAT_UNSCHEDULED and QM_DQRR_STAT_DQCR_EXPIRED bits
* in the "stat" parameter passed to the FQ's dequeue callback, or by waiting
* for the QMAN_FQ_STATE_VDQCR bit to disappear.
*/
int qman_volatile_dequeue(struct qman_fq *fq, u32 flags, u32 vdqcr);
int qman_alloc_fq_table(u32 num_fqids);
/* QMan s/w corenet portal, low-level i/face */
/*
* For qm_dqrr_sdqcr_set(); Choose one SOURCE. Choose one COUNT. Choose one
* dequeue TYPE. Choose TOKEN (8-bit).
* If SOURCE == CHANNELS,
* Choose CHANNELS_DEDICATED and/or CHANNELS_POOL(n).
* You can choose DEDICATED_PRECEDENCE if the portal channel should have
* priority.
* If SOURCE == SPECIFICWQ,
* Either select the work-queue ID with SPECIFICWQ_WQ(), or select the
* channel (SPECIFICWQ_DEDICATED or SPECIFICWQ_POOL()) and specify the
* work-queue priority (0-7) with SPECIFICWQ_WQ() - either way, you get the
* same value.
*/
#define QM_SDQCR_SOURCE_CHANNELS 0x0
#define QM_SDQCR_SOURCE_SPECIFICWQ 0x40000000
#define QM_SDQCR_COUNT_EXACT1 0x0
#define QM_SDQCR_COUNT_UPTO3 0x20000000
#define QM_SDQCR_DEDICATED_PRECEDENCE 0x10000000
#define QM_SDQCR_TYPE_MASK 0x03000000
#define QM_SDQCR_TYPE_NULL 0x0
#define QM_SDQCR_TYPE_PRIO_QOS 0x01000000
#define QM_SDQCR_TYPE_ACTIVE_QOS 0x02000000
#define QM_SDQCR_TYPE_ACTIVE 0x03000000
#define QM_SDQCR_TOKEN_MASK 0x00ff0000
#define QM_SDQCR_TOKEN_SET(v) (((v) & 0xff) << 16)
#define QM_SDQCR_TOKEN_GET(v) (((v) >> 16) & 0xff)
#define QM_SDQCR_CHANNELS_DEDICATED 0x00008000
#define QM_SDQCR_SPECIFICWQ_MASK 0x000000f7
#define QM_SDQCR_SPECIFICWQ_DEDICATED 0x00000000
#define QM_SDQCR_SPECIFICWQ_POOL(n) ((n) << 4)
#define QM_SDQCR_SPECIFICWQ_WQ(n) (n)
/* For qm_dqrr_vdqcr_set(): use FQID(n) to fill in the frame queue ID */
#define QM_VDQCR_FQID_MASK 0x00ffffff
#define QM_VDQCR_FQID(n) ((n) & QM_VDQCR_FQID_MASK)
/*
* Used by all portal interrupt registers except 'inhibit'
* Channels with frame availability
*/
#define QM_PIRQ_DQAVAIL 0x0000ffff
/* The DQAVAIL interrupt fields break down into these bits; */
#define QM_DQAVAIL_PORTAL 0x8000 /* Portal channel */
#define QM_DQAVAIL_POOL(n) (0x8000 >> (n)) /* Pool channel, n==[1..15] */
#define QM_DQAVAIL_MASK 0xffff
/* This mask contains all the "irqsource" bits visible to API users */
#define QM_PIRQ_VISIBLE (QM_PIRQ_SLOW | QM_PIRQ_DQRI)
extern struct qman_portal *affine_portals[NR_CPUS];
const struct qm_portal_config *qman_get_qm_portal_config(
struct qman_portal *portal);

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/* Copyright 2008 - 2016 Freescale Semiconductor, Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of Freescale Semiconductor nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* ALTERNATIVELY, this software may be distributed under the terms of the
* GNU General Public License ("GPL") as published by the Free Software
* Foundation, either version 2 of that License or (at your option) any
* later version.
*
* THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "qman_test.h"
MODULE_AUTHOR("Geoff Thorpe");
MODULE_LICENSE("Dual BSD/GPL");
MODULE_DESCRIPTION("QMan testing");
static int test_init(void)
{
int loop = 1;
int err = 0;
while (loop--) {
#ifdef CONFIG_FSL_QMAN_TEST_STASH
err = qman_test_stash();
if (err)
break;
#endif
#ifdef CONFIG_FSL_QMAN_TEST_API
err = qman_test_api();
if (err)
break;
#endif
}
return err;
}
static void test_exit(void)
{
}
module_init(test_init);
module_exit(test_exit);

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/* Copyright 2008 - 2016 Freescale Semiconductor, Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of Freescale Semiconductor nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* ALTERNATIVELY, this software may be distributed under the terms of the
* GNU General Public License ("GPL") as published by the Free Software
* Foundation, either version 2 of that License or (at your option) any
* later version.
*
* THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "qman_priv.h"
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
int qman_test_stash(void);
int qman_test_api(void);

252
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/* Copyright 2008 - 2016 Freescale Semiconductor, Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of Freescale Semiconductor nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* ALTERNATIVELY, this software may be distributed under the terms of the
* GNU General Public License ("GPL") as published by the Free Software
* Foundation, either version 2 of that License or (at your option) any
* later version.
*
* THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "qman_test.h"
#define CGR_ID 27
#define POOL_ID 2
#define FQ_FLAGS QMAN_FQ_FLAG_DYNAMIC_FQID
#define NUM_ENQUEUES 10
#define NUM_PARTIAL 4
#define PORTAL_SDQCR (QM_SDQCR_SOURCE_CHANNELS | \
QM_SDQCR_TYPE_PRIO_QOS | \
QM_SDQCR_TOKEN_SET(0x98) | \
QM_SDQCR_CHANNELS_DEDICATED | \
QM_SDQCR_CHANNELS_POOL(POOL_ID))
#define PORTAL_OPAQUE ((void *)0xf00dbeef)
#define VDQCR_FLAGS (QMAN_VOLATILE_FLAG_WAIT | QMAN_VOLATILE_FLAG_FINISH)
static enum qman_cb_dqrr_result cb_dqrr(struct qman_portal *,
struct qman_fq *,
const struct qm_dqrr_entry *);
static void cb_ern(struct qman_portal *, struct qman_fq *,
const union qm_mr_entry *);
static void cb_fqs(struct qman_portal *, struct qman_fq *,
const union qm_mr_entry *);
static struct qm_fd fd, fd_dq;
static struct qman_fq fq_base = {
.cb.dqrr = cb_dqrr,
.cb.ern = cb_ern,
.cb.fqs = cb_fqs
};
static DECLARE_WAIT_QUEUE_HEAD(waitqueue);
static int retire_complete, sdqcr_complete;
/* Helpers for initialising and "incrementing" a frame descriptor */
static void fd_init(struct qm_fd *fd)
{
qm_fd_addr_set64(fd, 0xabdeadbeefLLU);
qm_fd_set_contig_big(fd, 0x0000ffff);
fd->cmd = 0xfeedf00d;
}
static void fd_inc(struct qm_fd *fd)
{
u64 t = qm_fd_addr_get64(fd);
int z = t >> 40;
unsigned int len, off;
enum qm_fd_format fmt;
t <<= 1;
if (z)
t |= 1;
qm_fd_addr_set64(fd, t);
fmt = qm_fd_get_format(fd);
off = qm_fd_get_offset(fd);
len = qm_fd_get_length(fd);
len--;
qm_fd_set_param(fd, fmt, off, len);
fd->cmd++;
}
/* The only part of the 'fd' we can't memcmp() is the ppid */
static int fd_cmp(const struct qm_fd *a, const struct qm_fd *b)
{
int r = (qm_fd_addr_get64(a) == qm_fd_addr_get64(b)) ? 0 : -1;
if (!r) {
enum qm_fd_format fmt_a, fmt_b;
fmt_a = qm_fd_get_format(a);
fmt_b = qm_fd_get_format(b);
r = fmt_a - fmt_b;
}
if (!r)
r = a->cfg - b->cfg;
if (!r)
r = a->cmd - b->cmd;
return r;
}
/* test */
static int do_enqueues(struct qman_fq *fq)
{
unsigned int loop;
int err = 0;
for (loop = 0; loop < NUM_ENQUEUES; loop++) {
if (qman_enqueue(fq, &fd)) {
pr_crit("qman_enqueue() failed\n");
err = -EIO;
}
fd_inc(&fd);
}
return err;
}
int qman_test_api(void)
{
unsigned int flags, frmcnt;
int err;
struct qman_fq *fq = &fq_base;
pr_info("%s(): Starting\n", __func__);
fd_init(&fd);
fd_init(&fd_dq);
/* Initialise (parked) FQ */
err = qman_create_fq(0, FQ_FLAGS, fq);
if (err) {
pr_crit("qman_create_fq() failed\n");
goto failed;
}
err = qman_init_fq(fq, QMAN_INITFQ_FLAG_LOCAL, NULL);
if (err) {
pr_crit("qman_init_fq() failed\n");
goto failed;
}
/* Do enqueues + VDQCR, twice. (Parked FQ) */
err = do_enqueues(fq);
if (err)
goto failed;
pr_info("VDQCR (till-empty);\n");
frmcnt = QM_VDQCR_NUMFRAMES_TILLEMPTY;
err = qman_volatile_dequeue(fq, VDQCR_FLAGS, frmcnt);
if (err) {
pr_crit("qman_volatile_dequeue() failed\n");
goto failed;
}
err = do_enqueues(fq);
if (err)
goto failed;
pr_info("VDQCR (%d of %d);\n", NUM_PARTIAL, NUM_ENQUEUES);
frmcnt = QM_VDQCR_NUMFRAMES_SET(NUM_PARTIAL);
err = qman_volatile_dequeue(fq, VDQCR_FLAGS, frmcnt);
if (err) {
pr_crit("qman_volatile_dequeue() failed\n");
goto failed;
}
pr_info("VDQCR (%d of %d);\n", NUM_ENQUEUES - NUM_PARTIAL,
NUM_ENQUEUES);
frmcnt = QM_VDQCR_NUMFRAMES_SET(NUM_ENQUEUES - NUM_PARTIAL);
err = qman_volatile_dequeue(fq, VDQCR_FLAGS, frmcnt);
if (err) {
pr_err("qman_volatile_dequeue() failed\n");
goto failed;
}
err = do_enqueues(fq);
if (err)
goto failed;
pr_info("scheduled dequeue (till-empty)\n");
err = qman_schedule_fq(fq);
if (err) {
pr_crit("qman_schedule_fq() failed\n");
goto failed;
}
wait_event(waitqueue, sdqcr_complete);
/* Retire and OOS the FQ */
err = qman_retire_fq(fq, &flags);
if (err < 0) {
pr_crit("qman_retire_fq() failed\n");
goto failed;
}
wait_event(waitqueue, retire_complete);
if (flags & QMAN_FQ_STATE_BLOCKOOS) {
err = -EIO;
pr_crit("leaking frames\n");
goto failed;
}
err = qman_oos_fq(fq);
if (err) {
pr_crit("qman_oos_fq() failed\n");
goto failed;
}
qman_destroy_fq(fq);
pr_info("%s(): Finished\n", __func__);
return 0;
failed:
WARN_ON(1);
return err;
}
static enum qman_cb_dqrr_result cb_dqrr(struct qman_portal *p,
struct qman_fq *fq,
const struct qm_dqrr_entry *dq)
{
if (WARN_ON(fd_cmp(&fd_dq, &dq->fd))) {
pr_err("BADNESS: dequeued frame doesn't match;\n");
return qman_cb_dqrr_consume;
}
fd_inc(&fd_dq);
if (!(dq->stat & QM_DQRR_STAT_UNSCHEDULED) && !fd_cmp(&fd_dq, &fd)) {
sdqcr_complete = 1;
wake_up(&waitqueue);
}
return qman_cb_dqrr_consume;
}
static void cb_ern(struct qman_portal *p, struct qman_fq *fq,
const union qm_mr_entry *msg)
{
pr_crit("cb_ern() unimplemented");
WARN_ON(1);
}
static void cb_fqs(struct qman_portal *p, struct qman_fq *fq,
const union qm_mr_entry *msg)
{
u8 verb = (msg->verb & QM_MR_VERB_TYPE_MASK);
if ((verb != QM_MR_VERB_FQRN) && (verb != QM_MR_VERB_FQRNI)) {
pr_crit("unexpected FQS message");
WARN_ON(1);
return;
}
pr_info("Retirement message received\n");
retire_complete = 1;
wake_up(&waitqueue);
}

617
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/* Copyright 2009 - 2016 Freescale Semiconductor, Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of Freescale Semiconductor nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* ALTERNATIVELY, this software may be distributed under the terms of the
* GNU General Public License ("GPL") as published by the Free Software
* Foundation, either version 2 of that License or (at your option) any
* later version.
*
* THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "qman_test.h"
#include <linux/dma-mapping.h>
#include <linux/delay.h>
/*
* Algorithm:
*
* Each cpu will have HP_PER_CPU "handlers" set up, each of which incorporates
* an rx/tx pair of FQ objects (both of which are stashed on dequeue). The
* organisation of FQIDs is such that the HP_PER_CPU*NUM_CPUS handlers will
* shuttle a "hot potato" frame around them such that every forwarding action
* moves it from one cpu to another. (The use of more than one handler per cpu
* is to allow enough handlers/FQs to truly test the significance of caching -
* ie. when cache-expiries are occurring.)
*
* The "hot potato" frame content will be HP_NUM_WORDS*4 bytes in size, and the
* first and last words of the frame data will undergo a transformation step on
* each forwarding action. To achieve this, each handler will be assigned a
* 32-bit "mixer", that is produced using a 32-bit LFSR. When a frame is
* received by a handler, the mixer of the expected sender is XOR'd into all
* words of the entire frame, which is then validated against the original
* values. Then, before forwarding, the entire frame is XOR'd with the mixer of
* the current handler. Apart from validating that the frame is taking the
* expected path, this also provides some quasi-realistic overheads to each
* forwarding action - dereferencing *all* the frame data, computation, and
* conditional branching. There is a "special" handler designated to act as the
* instigator of the test by creating an enqueuing the "hot potato" frame, and
* to determine when the test has completed by counting HP_LOOPS iterations.
*
* Init phases:
*
* 1. prepare each cpu's 'hp_cpu' struct using on_each_cpu(,,1) and link them
* into 'hp_cpu_list'. Specifically, set processor_id, allocate HP_PER_CPU
* handlers and link-list them (but do no other handler setup).
*
* 2. scan over 'hp_cpu_list' HP_PER_CPU times, the first time sets each
* hp_cpu's 'iterator' to point to its first handler. With each loop,
* allocate rx/tx FQIDs and mixer values to the hp_cpu's iterator handler
* and advance the iterator for the next loop. This includes a final fixup,
* which connects the last handler to the first (and which is why phase 2
* and 3 are separate).
*
* 3. scan over 'hp_cpu_list' HP_PER_CPU times, the first time sets each
* hp_cpu's 'iterator' to point to its first handler. With each loop,
* initialise FQ objects and advance the iterator for the next loop.
* Moreover, do this initialisation on the cpu it applies to so that Rx FQ
* initialisation targets the correct cpu.
*/
/*
* helper to run something on all cpus (can't use on_each_cpu(), as that invokes
* the fn from irq context, which is too restrictive).
*/
struct bstrap {
int (*fn)(void);
atomic_t started;
};
static int bstrap_fn(void *bs)
{
struct bstrap *bstrap = bs;
int err;
atomic_inc(&bstrap->started);
err = bstrap->fn();
if (err)
return err;
while (!kthread_should_stop())
msleep(20);
return 0;
}
static int on_all_cpus(int (*fn)(void))
{
int cpu;
for_each_cpu(cpu, cpu_online_mask) {
struct bstrap bstrap = {
.fn = fn,
.started = ATOMIC_INIT(0)
};
struct task_struct *k = kthread_create(bstrap_fn, &bstrap,
"hotpotato%d", cpu);
int ret;
if (IS_ERR(k))
return -ENOMEM;
kthread_bind(k, cpu);
wake_up_process(k);
/*
* If we call kthread_stop() before the "wake up" has had an
* effect, then the thread may exit with -EINTR without ever
* running the function. So poll until it's started before
* requesting it to stop.
*/
while (!atomic_read(&bstrap.started))
msleep(20);
ret = kthread_stop(k);
if (ret)
return ret;
}
return 0;
}
struct hp_handler {
/* The following data is stashed when 'rx' is dequeued; */
/* -------------- */
/* The Rx FQ, dequeues of which will stash the entire hp_handler */
struct qman_fq rx;
/* The Tx FQ we should forward to */
struct qman_fq tx;
/* The value we XOR post-dequeue, prior to validating */
u32 rx_mixer;
/* The value we XOR pre-enqueue, after validating */
u32 tx_mixer;
/* what the hotpotato address should be on dequeue */
dma_addr_t addr;
u32 *frame_ptr;
/* The following data isn't (necessarily) stashed on dequeue; */
/* -------------- */
u32 fqid_rx, fqid_tx;
/* list node for linking us into 'hp_cpu' */
struct list_head node;
/* Just to check ... */
unsigned int processor_id;
} ____cacheline_aligned;
struct hp_cpu {
/* identify the cpu we run on; */
unsigned int processor_id;
/* root node for the per-cpu list of handlers */
struct list_head handlers;
/* list node for linking us into 'hp_cpu_list' */
struct list_head node;
/*
* when repeatedly scanning 'hp_list', each time linking the n'th
* handlers together, this is used as per-cpu iterator state
*/
struct hp_handler *iterator;
};
/* Each cpu has one of these */
static DEFINE_PER_CPU(struct hp_cpu, hp_cpus);
/* links together the hp_cpu structs, in first-come first-serve order. */
static LIST_HEAD(hp_cpu_list);
static spinlock_t hp_lock = __SPIN_LOCK_UNLOCKED(hp_lock);
static unsigned int hp_cpu_list_length;
/* the "special" handler, that starts and terminates the test. */
static struct hp_handler *special_handler;
static int loop_counter;
/* handlers are allocated out of this, so they're properly aligned. */
static struct kmem_cache *hp_handler_slab;
/* this is the frame data */
static void *__frame_ptr;
static u32 *frame_ptr;
static dma_addr_t frame_dma;
/* the main function waits on this */
static DECLARE_WAIT_QUEUE_HEAD(queue);
#define HP_PER_CPU 2
#define HP_LOOPS 8
/* 80 bytes, like a small ethernet frame, and bleeds into a second cacheline */
#define HP_NUM_WORDS 80
/* First word of the LFSR-based frame data */
#define HP_FIRST_WORD 0xabbaf00d
static inline u32 do_lfsr(u32 prev)
{
return (prev >> 1) ^ (-(prev & 1u) & 0xd0000001u);
}
static int allocate_frame_data(void)
{
u32 lfsr = HP_FIRST_WORD;
int loop;
struct platform_device *pdev = platform_device_alloc("foobar", -1);
if (!pdev) {
pr_crit("platform_device_alloc() failed");
return -EIO;
}
if (platform_device_add(pdev)) {
pr_crit("platform_device_add() failed");
return -EIO;
}
__frame_ptr = kmalloc(4 * HP_NUM_WORDS, GFP_KERNEL);
if (!__frame_ptr)
return -ENOMEM;
frame_ptr = PTR_ALIGN(__frame_ptr, 64);
for (loop = 0; loop < HP_NUM_WORDS; loop++) {
frame_ptr[loop] = lfsr;
lfsr = do_lfsr(lfsr);
}
frame_dma = dma_map_single(&pdev->dev, frame_ptr, 4 * HP_NUM_WORDS,
DMA_BIDIRECTIONAL);
platform_device_del(pdev);
platform_device_put(pdev);
return 0;
}
static void deallocate_frame_data(void)
{
kfree(__frame_ptr);
}
static inline int process_frame_data(struct hp_handler *handler,
const struct qm_fd *fd)
{
u32 *p = handler->frame_ptr;
u32 lfsr = HP_FIRST_WORD;
int loop;
if (qm_fd_addr_get64(fd) != handler->addr) {
pr_crit("bad frame address");
return -EIO;
}
for (loop = 0; loop < HP_NUM_WORDS; loop++, p++) {
*p ^= handler->rx_mixer;
if (*p != lfsr) {
pr_crit("corrupt frame data");
return -EIO;
}
*p ^= handler->tx_mixer;
lfsr = do_lfsr(lfsr);
}
return 0;
}
static enum qman_cb_dqrr_result normal_dqrr(struct qman_portal *portal,
struct qman_fq *fq,
const struct qm_dqrr_entry *dqrr)
{
struct hp_handler *handler = (struct hp_handler *)fq;
if (process_frame_data(handler, &dqrr->fd)) {
WARN_ON(1);
goto skip;
}
if (qman_enqueue(&handler->tx, &dqrr->fd)) {
pr_crit("qman_enqueue() failed");
WARN_ON(1);
}
skip:
return qman_cb_dqrr_consume;
}
static enum qman_cb_dqrr_result special_dqrr(struct qman_portal *portal,
struct qman_fq *fq,
const struct qm_dqrr_entry *dqrr)
{
struct hp_handler *handler = (struct hp_handler *)fq;
process_frame_data(handler, &dqrr->fd);
if (++loop_counter < HP_LOOPS) {
if (qman_enqueue(&handler->tx, &dqrr->fd)) {
pr_crit("qman_enqueue() failed");
WARN_ON(1);
goto skip;
}
} else {
pr_info("Received final (%dth) frame\n", loop_counter);
wake_up(&queue);
}
skip:
return qman_cb_dqrr_consume;
}
static int create_per_cpu_handlers(void)
{
struct hp_handler *handler;
int loop;
struct hp_cpu *hp_cpu = this_cpu_ptr(&hp_cpus);
hp_cpu->processor_id = smp_processor_id();
spin_lock(&hp_lock);
list_add_tail(&hp_cpu->node, &hp_cpu_list);
hp_cpu_list_length++;
spin_unlock(&hp_lock);
INIT_LIST_HEAD(&hp_cpu->handlers);
for (loop = 0; loop < HP_PER_CPU; loop++) {
handler = kmem_cache_alloc(hp_handler_slab, GFP_KERNEL);
if (!handler) {
pr_crit("kmem_cache_alloc() failed");
WARN_ON(1);
return -EIO;
}
handler->processor_id = hp_cpu->processor_id;
handler->addr = frame_dma;
handler->frame_ptr = frame_ptr;
list_add_tail(&handler->node, &hp_cpu->handlers);
}
return 0;
}
static int destroy_per_cpu_handlers(void)
{
struct list_head *loop, *tmp;
struct hp_cpu *hp_cpu = this_cpu_ptr(&hp_cpus);
spin_lock(&hp_lock);
list_del(&hp_cpu->node);
spin_unlock(&hp_lock);
list_for_each_safe(loop, tmp, &hp_cpu->handlers) {
u32 flags = 0;
struct hp_handler *handler = list_entry(loop, struct hp_handler,
node);
if (qman_retire_fq(&handler->rx, &flags) ||
(flags & QMAN_FQ_STATE_BLOCKOOS)) {
pr_crit("qman_retire_fq(rx) failed, flags: %x", flags);
WARN_ON(1);
return -EIO;
}
if (qman_oos_fq(&handler->rx)) {
pr_crit("qman_oos_fq(rx) failed");
WARN_ON(1);
return -EIO;
}
qman_destroy_fq(&handler->rx);
qman_destroy_fq(&handler->tx);
qman_release_fqid(handler->fqid_rx);
list_del(&handler->node);
kmem_cache_free(hp_handler_slab, handler);
}
return 0;
}
static inline u8 num_cachelines(u32 offset)
{
u8 res = (offset + (L1_CACHE_BYTES - 1))
/ (L1_CACHE_BYTES);
if (res > 3)
return 3;
return res;
}
#define STASH_DATA_CL \
num_cachelines(HP_NUM_WORDS * 4)
#define STASH_CTX_CL \
num_cachelines(offsetof(struct hp_handler, fqid_rx))
static int init_handler(void *h)
{
struct qm_mcc_initfq opts;
struct hp_handler *handler = h;
int err;
if (handler->processor_id != smp_processor_id()) {
err = -EIO;
goto failed;
}
/* Set up rx */
memset(&handler->rx, 0, sizeof(handler->rx));
if (handler == special_handler)
handler->rx.cb.dqrr = special_dqrr;
else
handler->rx.cb.dqrr = normal_dqrr;
err = qman_create_fq(handler->fqid_rx, 0, &handler->rx);
if (err) {
pr_crit("qman_create_fq(rx) failed");
goto failed;
}
memset(&opts, 0, sizeof(opts));
opts.we_mask = QM_INITFQ_WE_FQCTRL | QM_INITFQ_WE_CONTEXTA;
opts.fqd.fq_ctrl = QM_FQCTRL_CTXASTASHING;
qm_fqd_set_stashing(&opts.fqd, 0, STASH_DATA_CL, STASH_CTX_CL);
err = qman_init_fq(&handler->rx, QMAN_INITFQ_FLAG_SCHED |
QMAN_INITFQ_FLAG_LOCAL, &opts);
if (err) {
pr_crit("qman_init_fq(rx) failed");
goto failed;
}
/* Set up tx */
memset(&handler->tx, 0, sizeof(handler->tx));
err = qman_create_fq(handler->fqid_tx, QMAN_FQ_FLAG_NO_MODIFY,
&handler->tx);
if (err) {
pr_crit("qman_create_fq(tx) failed");
goto failed;
}
return 0;
failed:
return err;
}
static void init_handler_cb(void *h)
{
if (init_handler(h))
WARN_ON(1);
}
static int init_phase2(void)
{
int loop;
u32 fqid = 0;
u32 lfsr = 0xdeadbeef;
struct hp_cpu *hp_cpu;
struct hp_handler *handler;
for (loop = 0; loop < HP_PER_CPU; loop++) {
list_for_each_entry(hp_cpu, &hp_cpu_list, node) {
int err;
if (!loop)
hp_cpu->iterator = list_first_entry(
&hp_cpu->handlers,
struct hp_handler, node);
else
hp_cpu->iterator = list_entry(
hp_cpu->iterator->node.next,
struct hp_handler, node);
/* Rx FQID is the previous handler's Tx FQID */
hp_cpu->iterator->fqid_rx = fqid;
/* Allocate new FQID for Tx */
err = qman_alloc_fqid(&fqid);
if (err) {
pr_crit("qman_alloc_fqid() failed");
return err;
}
hp_cpu->iterator->fqid_tx = fqid;
/* Rx mixer is the previous handler's Tx mixer */
hp_cpu->iterator->rx_mixer = lfsr;
/* Get new mixer for Tx */
lfsr = do_lfsr(lfsr);
hp_cpu->iterator->tx_mixer = lfsr;
}
}
/* Fix up the first handler (fqid_rx==0, rx_mixer=0xdeadbeef) */
hp_cpu = list_first_entry(&hp_cpu_list, struct hp_cpu, node);
handler = list_first_entry(&hp_cpu->handlers, struct hp_handler, node);
if (handler->fqid_rx != 0 || handler->rx_mixer != 0xdeadbeef)
return 1;
handler->fqid_rx = fqid;
handler->rx_mixer = lfsr;
/* and tag it as our "special" handler */
special_handler = handler;
return 0;
}
static int init_phase3(void)
{
int loop, err;
struct hp_cpu *hp_cpu;
for (loop = 0; loop < HP_PER_CPU; loop++) {
list_for_each_entry(hp_cpu, &hp_cpu_list, node) {
if (!loop)
hp_cpu->iterator = list_first_entry(
&hp_cpu->handlers,
struct hp_handler, node);
else
hp_cpu->iterator = list_entry(
hp_cpu->iterator->node.next,
struct hp_handler, node);
preempt_disable();
if (hp_cpu->processor_id == smp_processor_id()) {
err = init_handler(hp_cpu->iterator);
if (err)
return err;
} else {
smp_call_function_single(hp_cpu->processor_id,
init_handler_cb, hp_cpu->iterator, 1);
}
preempt_enable();
}
}
return 0;
}
static int send_first_frame(void *ignore)
{
u32 *p = special_handler->frame_ptr;
u32 lfsr = HP_FIRST_WORD;
int loop, err;
struct qm_fd fd;
if (special_handler->processor_id != smp_processor_id()) {
err = -EIO;
goto failed;
}
memset(&fd, 0, sizeof(fd));
qm_fd_addr_set64(&fd, special_handler->addr);
qm_fd_set_contig_big(&fd, HP_NUM_WORDS * 4);
for (loop = 0; loop < HP_NUM_WORDS; loop++, p++) {
if (*p != lfsr) {
err = -EIO;
pr_crit("corrupt frame data");
goto failed;
}
*p ^= special_handler->tx_mixer;
lfsr = do_lfsr(lfsr);
}
pr_info("Sending first frame\n");
err = qman_enqueue(&special_handler->tx, &fd);
if (err) {
pr_crit("qman_enqueue() failed");
goto failed;
}
return 0;
failed:
return err;
}
static void send_first_frame_cb(void *ignore)
{
if (send_first_frame(NULL))
WARN_ON(1);
}
int qman_test_stash(void)
{
int err;
if (cpumask_weight(cpu_online_mask) < 2) {
pr_info("%s(): skip - only 1 CPU\n", __func__);
return 0;
}
pr_info("%s(): Starting\n", __func__);
hp_cpu_list_length = 0;
loop_counter = 0;
hp_handler_slab = kmem_cache_create("hp_handler_slab",
sizeof(struct hp_handler), L1_CACHE_BYTES,
SLAB_HWCACHE_ALIGN, NULL);
if (!hp_handler_slab) {
err = -EIO;
pr_crit("kmem_cache_create() failed");
goto failed;
}
err = allocate_frame_data();
if (err)
goto failed;
/* Init phase 1 */
pr_info("Creating %d handlers per cpu...\n", HP_PER_CPU);
if (on_all_cpus(create_per_cpu_handlers)) {
err = -EIO;
pr_crit("on_each_cpu() failed");
goto failed;
}
pr_info("Number of cpus: %d, total of %d handlers\n",
hp_cpu_list_length, hp_cpu_list_length * HP_PER_CPU);
err = init_phase2();
if (err)
goto failed;
err = init_phase3();
if (err)
goto failed;
preempt_disable();
if (special_handler->processor_id == smp_processor_id()) {
err = send_first_frame(NULL);
if (err)
goto failed;
} else {
smp_call_function_single(special_handler->processor_id,
send_first_frame_cb, NULL, 1);
}
preempt_enable();
wait_event(queue, loop_counter == HP_LOOPS);
deallocate_frame_data();
if (on_all_cpus(destroy_per_cpu_handlers)) {
err = -EIO;
pr_crit("on_each_cpu() failed");
goto failed;
}
kmem_cache_destroy(hp_handler_slab);
pr_info("%s(): Finished\n", __func__);
return 0;
failed:
WARN_ON(1);
return err;
}

3
drivers/soc/fsl/qe/gpio.c
View File

@ -41,7 +41,8 @@ struct qe_gpio_chip {
static void qe_gpio_save_regs(struct of_mm_gpio_chip *mm_gc)
{
struct qe_gpio_chip *qe_gc = gpiochip_get_data(&mm_gc->gc);
struct qe_gpio_chip *qe_gc =
container_of(mm_gc, struct qe_gpio_chip, mm_gc);
struct qe_pio_regs __iomem *regs = mm_gc->regs;
qe_gc->cpdata = in_be32(&regs->cpdata);

10
drivers/soc/fsl/qe/qe.c
View File

@ -69,8 +69,8 @@ static phys_addr_t qebase = -1;
phys_addr_t get_qe_base(void)
{
struct device_node *qe;
int size;
const u32 *prop;
int ret;
struct resource res;
if (qebase != -1)
return qebase;
@ -82,9 +82,9 @@ phys_addr_t get_qe_base(void)
return qebase;
}
prop = of_get_property(qe, "reg", &size);
if (prop && size >= sizeof(*prop))
qebase = of_translate_address(qe, prop);
ret = of_address_to_resource(qe, 0, &res);
if (!ret)
qebase = res.start;
of_node_put(qe);
return qebase;

8
drivers/soc/fsl/qe/qe_common.c
View File

@ -70,6 +70,11 @@ int cpm_muram_init(void)
}
muram_pool = gen_pool_create(0, -1);
if (!muram_pool) {
pr_err("Cannot allocate memory pool for CPM/QE muram");
ret = -ENOMEM;
goto out_muram;
}
muram_pbase = of_translate_address(np, zero);
if (muram_pbase == (phys_addr_t)OF_BAD_ADDR) {
pr_err("Cannot translate zero through CPM muram node");
@ -116,6 +121,9 @@ static unsigned long cpm_muram_alloc_common(unsigned long size,
struct muram_block *entry;
unsigned long start;
if (!muram_pool && cpm_muram_init())
goto out2;
start = gen_pool_alloc_algo(muram_pool, size, algo, data);
if (!start)
goto out2;

4
drivers/soc/fsl/qe/qe_tdm.c
View File

@ -99,7 +99,7 @@ int ucc_of_parse_tdm(struct device_node *np, struct ucc_tdm *utdm,
utdm->tdm_port = val;
ut_info->uf_info.tdm_num = utdm->tdm_port;
if (of_get_property(np, "fsl,tdm-internal-loopback", NULL))
if (of_property_read_bool(np, "fsl,tdm-internal-loopback"))
utdm->tdm_mode = TDM_INTERNAL_LOOPBACK;
else
utdm->tdm_mode = TDM_NORMAL;
@ -167,7 +167,7 @@ int ucc_of_parse_tdm(struct device_node *np, struct ucc_tdm *utdm,
}
if (siram_init_flag == 0) {
memset_io(utdm->siram, 0, res->end - res->start + 1);
memset_io(utdm->siram, 0, resource_size(res));
siram_init_flag = 1;
}

129
include/soc/fsl/bman.h Normal file
View File

@ -0,0 +1,129 @@
/* Copyright 2008 - 2016 Freescale Semiconductor, Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of Freescale Semiconductor nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* ALTERNATIVELY, this software may be distributed under the terms of the
* GNU General Public License ("GPL") as published by the Free Software
* Foundation, either version 2 of that License or (at your option) any
* later version.
*
* THIS SOFTWARE IS PROVIDED BY Freescale Semiconductor ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL Freescale Semiconductor BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef __FSL_BMAN_H
#define __FSL_BMAN_H
/* wrapper for 48-bit buffers */
struct bm_buffer {
union {
struct {
__be16 bpid; /* hi 8-bits reserved */
__be16 hi; /* High 16-bits of 48-bit address */
__be32 lo; /* Low 32-bits of 48-bit address */
};
__be64 data;
};
} __aligned(8);
/*
* Restore the 48 bit address previously stored in BMan
* hardware pools as a dma_addr_t
*/
static inline dma_addr_t bm_buf_addr(const struct bm_buffer *buf)
{
return be64_to_cpu(buf->data) & 0xffffffffffffLLU;
}
static inline u64 bm_buffer_get64(const struct bm_buffer *buf)
{
return be64_to_cpu(buf->data) & 0xffffffffffffLLU;
}
static inline void bm_buffer_set64(struct bm_buffer *buf, u64 addr)
{
buf->hi = cpu_to_be16(upper_32_bits(addr));
buf->lo = cpu_to_be32(lower_32_bits(addr));
}
static inline u8 bm_buffer_get_bpid(const struct bm_buffer *buf)
{
return be16_to_cpu(buf->bpid) & 0xff;
}
static inline void bm_buffer_set_bpid(struct bm_buffer *buf, int bpid)
{
buf->bpid = cpu_to_be16(bpid & 0xff);
}
/* Managed portal, high-level i/face */
/* Portal and Buffer Pools */
struct bman_portal;
struct bman_pool;
#define BM_POOL_MAX 64 /* max # of buffer pools */
/**
* bman_new_pool - Allocates a Buffer Pool object
*
* Creates a pool object, and returns a reference to it or NULL on error.
*/
struct bman_pool *bman_new_pool(void);
/**
* bman_free_pool - Deallocates a Buffer Pool object
* @pool: the pool object to release
*/
void bman_free_pool(struct bman_pool *pool);
/**
* bman_get_bpid - Returns a pool object's BPID.
* @pool: the pool object
*
* The returned value is the index of the encapsulated buffer pool,
* in the range of [0, @BM_POOL_MAX-1].
*/
int bman_get_bpid(const struct bman_pool *pool);
/**
* bman_release - Release buffer(s) to the buffer pool
* @pool: the buffer pool object to release to
* @bufs: an array of buffers to release
* @num: the number of buffers in @bufs (1-8)
*
* Adds the given buffers to RCR entries. If the RCR ring is unresponsive,
* the function will return -ETIMEDOUT. Otherwise, it returns zero.
*/
int bman_release(struct bman_pool *pool, const struct bm_buffer *bufs, u8 num);
/**
* bman_acquire - Acquire buffer(s) from a buffer pool
* @pool: the buffer pool object to acquire from
* @bufs: array for storing the acquired buffers
* @num: the number of buffers desired (@bufs is at least this big)
*
* Issues an "Acquire" command via the portal's management command interface.
* The return value will be the number of buffers obtained from the pool, or a
* negative error code if a h/w error or pool starvation was encountered. In
* the latter case, the content of @bufs is undefined.
*/
int bman_acquire(struct bman_pool *pool, struct bm_buffer *bufs, u8 num);
#endif /* __FSL_BMAN_H */

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include/soc/fsl/qman.h Normal file
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tools/testing/selftests/powerpc/copyloops/asm/export.h Normal file
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#define EXPORT_SYMBOL(x)

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