Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-11-27 06:31:52 +00:00
Code Issues Packages Projects Releases Wiki Activity
8c678b101a
linux/drivers/scsi/gvp11.c
Tim Schmielau cd354f1ae7 [PATCH] remove many unneeded #includes of sched.h 
After Al Viro (finally) succeeded in removing the sched.h #include in module.h
recently, it makes sense again to remove other superfluous sched.h includes.
There are quite a lot of files which include it but don't actually need
anything defined in there.  Presumably these includes were once needed for
macros that used to live in sched.h, but moved to other header files in the
course of cleaning it up.

To ease the pain, this time I did not fiddle with any header files and only
removed #includes from .c-files, which tend to cause less trouble.

Compile tested against 2.6.20-rc2 and 2.6.20-rc2-mm2 (with offsets) on alpha,
arm, i386, ia64, mips, powerpc, and x86_64 with allnoconfig, defconfig,
allmodconfig, and allyesconfig as well as a few randconfigs on x86_64 and all
configs in arch/arm/configs on arm.  I also checked that no new warnings were
introduced by the patch (actually, some warnings are removed that were emitted
by unnecessarily included header files).

Signed-off-by: Tim Schmielau <tim@physik3.uni-rostock.de>
Acked-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-14 08:09:54 -08:00

394 lines
10 KiB
C
Raw Blame History

#include <linux/types.h>
#include <linux/mm.h>
#include <linux/blkdev.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <asm/setup.h>
#include <asm/page.h>
#include <asm/pgtable.h>
#include <asm/amigaints.h>
#include <asm/amigahw.h>
#include <linux/zorro.h>
#include <asm/irq.h>
#include <linux/spinlock.h>
#include "scsi.h"
#include <scsi/scsi_host.h>
#include "wd33c93.h"
#include "gvp11.h"
#include<linux/stat.h>
#define DMA(ptr) ((gvp11_scsiregs *)((ptr)->base))
#define HDATA(ptr) ((struct WD33C93_hostdata *)((ptr)->hostdata))
static irqreturn_t gvp11_intr (int irq, void *_instance)
{
unsigned long flags;
unsigned int status;
struct Scsi_Host *instance = (struct Scsi_Host *)_instance;
status = DMA(instance)->CNTR;
if (!(status & GVP11_DMAC_INT_PENDING))
return IRQ_NONE;
spin_lock_irqsave(instance->host_lock, flags);
wd33c93_intr(instance);
spin_unlock_irqrestore(instance->host_lock, flags);
return IRQ_HANDLED;
}
static int gvp11_xfer_mask = 0;
void gvp11_setup (char *str, int *ints)
{
gvp11_xfer_mask = ints[1];
}
static int dma_setup(struct scsi_cmnd *cmd, int dir_in)
{
unsigned short cntr = GVP11_DMAC_INT_ENABLE;
unsigned long addr = virt_to_bus(cmd->SCp.ptr);
int bank_mask;
static int scsi_alloc_out_of_range = 0;
/* use bounce buffer if the physical address is bad */
if (addr & HDATA(cmd->device->host)->dma_xfer_mask ||
(!dir_in && mm_end_of_chunk (addr, cmd->SCp.this_residual)))
{
HDATA(cmd->device->host)->dma_bounce_len = (cmd->SCp.this_residual + 511)
& ~0x1ff;
if( !scsi_alloc_out_of_range ) {
HDATA(cmd->device->host)->dma_bounce_buffer =
kmalloc (HDATA(cmd->device->host)->dma_bounce_len, GFP_KERNEL);
HDATA(cmd->device->host)->dma_buffer_pool = BUF_SCSI_ALLOCED;
}
if (scsi_alloc_out_of_range ||
!HDATA(cmd->device->host)->dma_bounce_buffer) {
HDATA(cmd->device->host)->dma_bounce_buffer =
amiga_chip_alloc(HDATA(cmd->device->host)->dma_bounce_len,
"GVP II SCSI Bounce Buffer");
if(!HDATA(cmd->device->host)->dma_bounce_buffer)
{
HDATA(cmd->device->host)->dma_bounce_len = 0;
return 1;
}
HDATA(cmd->device->host)->dma_buffer_pool = BUF_CHIP_ALLOCED;
}
/* check if the address of the bounce buffer is OK */
addr = virt_to_bus(HDATA(cmd->device->host)->dma_bounce_buffer);
if (addr & HDATA(cmd->device->host)->dma_xfer_mask) {
/* fall back to Chip RAM if address out of range */
if( HDATA(cmd->device->host)->dma_buffer_pool == BUF_SCSI_ALLOCED) {
kfree (HDATA(cmd->device->host)->dma_bounce_buffer);
scsi_alloc_out_of_range = 1;
} else {
amiga_chip_free (HDATA(cmd->device->host)->dma_bounce_buffer);
}
HDATA(cmd->device->host)->dma_bounce_buffer =
amiga_chip_alloc(HDATA(cmd->device->host)->dma_bounce_len,
"GVP II SCSI Bounce Buffer");
if(!HDATA(cmd->device->host)->dma_bounce_buffer)
{
HDATA(cmd->device->host)->dma_bounce_len = 0;
return 1;
}
addr = virt_to_bus(HDATA(cmd->device->host)->dma_bounce_buffer);
HDATA(cmd->device->host)->dma_buffer_pool = BUF_CHIP_ALLOCED;
}
if (!dir_in) {
/* copy to bounce buffer for a write */
memcpy (HDATA(cmd->device->host)->dma_bounce_buffer,
cmd->SCp.ptr, cmd->SCp.this_residual);
}
}
/* setup dma direction */
if (!dir_in)
cntr |= GVP11_DMAC_DIR_WRITE;
HDATA(cmd->device->host)->dma_dir = dir_in;
DMA(cmd->device->host)->CNTR = cntr;
/* setup DMA *physical* address */
DMA(cmd->device->host)->ACR = addr;
if (dir_in)
/* invalidate any cache */
cache_clear (addr, cmd->SCp.this_residual);
else
/* push any dirty cache */
cache_push (addr, cmd->SCp.this_residual);
if ((bank_mask = (~HDATA(cmd->device->host)->dma_xfer_mask >> 18) & 0x01c0))
DMA(cmd->device->host)->BANK = bank_mask & (addr >> 18);
/* start DMA */
DMA(cmd->device->host)->ST_DMA = 1;
/* return success */
return 0;
}
static void dma_stop(struct Scsi_Host *instance, struct scsi_cmnd *SCpnt,
int status)
{
/* stop DMA */
DMA(instance)->SP_DMA = 1;
/* remove write bit from CONTROL bits */
DMA(instance)->CNTR = GVP11_DMAC_INT_ENABLE;
/* copy from a bounce buffer, if necessary */
if (status && HDATA(instance)->dma_bounce_buffer) {
if (HDATA(instance)->dma_dir && SCpnt)
memcpy (SCpnt->SCp.ptr,
HDATA(instance)->dma_bounce_buffer,
SCpnt->SCp.this_residual);
if (HDATA(instance)->dma_buffer_pool == BUF_SCSI_ALLOCED)
kfree (HDATA(instance)->dma_bounce_buffer);
else
amiga_chip_free(HDATA(instance)->dma_bounce_buffer);
HDATA(instance)->dma_bounce_buffer = NULL;
HDATA(instance)->dma_bounce_len = 0;
}
}
#define CHECK_WD33C93
int __init gvp11_detect(struct scsi_host_template *tpnt)
{
static unsigned char called = 0;
struct Scsi_Host *instance;
unsigned long address;
unsigned int epc;
struct zorro_dev *z = NULL;
unsigned int default_dma_xfer_mask;
wd33c93_regs regs;
int num_gvp11 = 0;
#ifdef CHECK_WD33C93
volatile unsigned char *sasr_3393, *scmd_3393;
unsigned char save_sasr;
unsigned char q, qq;
#endif
if (!MACH_IS_AMIGA || called)
return 0;
called = 1;
tpnt->proc_name = "GVP11";
tpnt->proc_info = &wd33c93_proc_info;
while ((z = zorro_find_device(ZORRO_WILDCARD, z))) {
/*
* This should (hopefully) be the correct way to identify
* all the different GVP SCSI controllers (except for the
* SERIES I though).
*/
if (z->id == ZORRO_PROD_GVP_COMBO_030_R3_SCSI ||
z->id == ZORRO_PROD_GVP_SERIES_II)
default_dma_xfer_mask = ~0x00ffffff;
else if (z->id == ZORRO_PROD_GVP_GFORCE_030_SCSI ||
z->id == ZORRO_PROD_GVP_A530_SCSI ||
z->id == ZORRO_PROD_GVP_COMBO_030_R4_SCSI)
default_dma_xfer_mask = ~0x01ffffff;
else if (z->id == ZORRO_PROD_GVP_A1291 ||
z->id == ZORRO_PROD_GVP_GFORCE_040_SCSI_1)
default_dma_xfer_mask = ~0x07ffffff;
else
continue;
/*
* Rumors state that some GVP ram boards use the same product
* code as the SCSI controllers. Therefore if the board-size
* is not 64KB we asume it is a ram board and bail out.
*/
if (z->resource.end-z->resource.start != 0xffff)
continue;
address = z->resource.start;
if (!request_mem_region(address, 256, "wd33c93"))
continue;
#ifdef CHECK_WD33C93
/*
* These darn GVP boards are a problem - it can be tough to tell
* whether or not they include a SCSI controller. This is the
* ultimate Yet-Another-GVP-Detection-Hack in that it actually
* probes for a WD33c93 chip: If we find one, it's extremely
* likely that this card supports SCSI, regardless of Product_
* Code, Board_Size, etc.
*/
/* Get pointers to the presumed register locations and save contents */
sasr_3393 = &(((gvp11_scsiregs *)(ZTWO_VADDR(address)))->SASR);
scmd_3393 = &(((gvp11_scsiregs *)(ZTWO_VADDR(address)))->SCMD);
save_sasr = *sasr_3393;
/* First test the AuxStatus Reg */
q = *sasr_3393; /* read it */
if (q & 0x08) /* bit 3 should always be clear */
goto release;
*sasr_3393 = WD_AUXILIARY_STATUS; /* setup indirect address */
if (*sasr_3393 == WD_AUXILIARY_STATUS) { /* shouldn't retain the write */
*sasr_3393 = save_sasr; /* Oops - restore this byte */
goto release;
}
if (*sasr_3393 != q) { /* should still read the same */
*sasr_3393 = save_sasr; /* Oops - restore this byte */
goto release;
}
if (*scmd_3393 != q) /* and so should the image at 0x1f */
goto release;
/* Ok, we probably have a wd33c93, but let's check a few other places
* for good measure. Make sure that this works for both 'A and 'B
* chip versions.
*/
*sasr_3393 = WD_SCSI_STATUS;
q = *scmd_3393;
*sasr_3393 = WD_SCSI_STATUS;
*scmd_3393 = ~q;
*sasr_3393 = WD_SCSI_STATUS;
qq = *scmd_3393;
*sasr_3393 = WD_SCSI_STATUS;
*scmd_3393 = q;
if (qq != q) /* should be read only */
goto release;
*sasr_3393 = 0x1e; /* this register is unimplemented */
q = *scmd_3393;
*sasr_3393 = 0x1e;
*scmd_3393 = ~q;
*sasr_3393 = 0x1e;
qq = *scmd_3393;
*sasr_3393 = 0x1e;
*scmd_3393 = q;
if (qq != q || qq != 0xff) /* should be read only, all 1's */
goto release;
*sasr_3393 = WD_TIMEOUT_PERIOD;
q = *scmd_3393;
*sasr_3393 = WD_TIMEOUT_PERIOD;
*scmd_3393 = ~q;
*sasr_3393 = WD_TIMEOUT_PERIOD;
qq = *scmd_3393;
*sasr_3393 = WD_TIMEOUT_PERIOD;
*scmd_3393 = q;
if (qq != (~q & 0xff)) /* should be read/write */
goto release;
#endif
instance = scsi_register (tpnt, sizeof (struct WD33C93_hostdata));
if(instance == NULL)
goto release;
instance->base = ZTWO_VADDR(address);
instance->irq = IRQ_AMIGA_PORTS;
instance->unique_id = z->slotaddr;
if (gvp11_xfer_mask)
HDATA(instance)->dma_xfer_mask = gvp11_xfer_mask;
else
HDATA(instance)->dma_xfer_mask = default_dma_xfer_mask;
DMA(instance)->secret2 = 1;
DMA(instance)->secret1 = 0;
DMA(instance)->secret3 = 15;
while (DMA(instance)->CNTR & GVP11_DMAC_BUSY) ;
DMA(instance)->CNTR = 0;
DMA(instance)->BANK = 0;
epc = *(unsigned short *)(ZTWO_VADDR(address) + 0x8000);
/*
* Check for 14MHz SCSI clock
*/
regs.SASR = &(DMA(instance)->SASR);
regs.SCMD = &(DMA(instance)->SCMD);
wd33c93_init(instance, regs, dma_setup, dma_stop,
(epc & GVP_SCSICLKMASK) ? WD33C93_FS_8_10
: WD33C93_FS_12_15);
request_irq(IRQ_AMIGA_PORTS, gvp11_intr, IRQF_SHARED, "GVP11 SCSI",
instance);
DMA(instance)->CNTR = GVP11_DMAC_INT_ENABLE;
num_gvp11++;
continue;
release:
release_mem_region(address, 256);
}
return num_gvp11;
}
static int gvp11_bus_reset(struct scsi_cmnd *cmd)
{
/* FIXME perform bus-specific reset */
/* FIXME 2: shouldn't we no-op this function (return
FAILED), and fall back to host reset function,
wd33c93_host_reset ? */
spin_lock_irq(cmd->device->host->host_lock);
wd33c93_host_reset(cmd);
spin_unlock_irq(cmd->device->host->host_lock);
return SUCCESS;
}
#define HOSTS_C
#include "gvp11.h"
static struct scsi_host_template driver_template = {
.proc_name = "GVP11",
.name = "GVP Series II SCSI",
.detect = gvp11_detect,
.release = gvp11_release,
.queuecommand = wd33c93_queuecommand,
.eh_abort_handler = wd33c93_abort,
.eh_bus_reset_handler = gvp11_bus_reset,
.eh_host_reset_handler = wd33c93_host_reset,
.can_queue = CAN_QUEUE,
.this_id = 7,
.sg_tablesize = SG_ALL,
.cmd_per_lun = CMD_PER_LUN,
.use_clustering = DISABLE_CLUSTERING
};
#include "scsi_module.c"
int gvp11_release(struct Scsi_Host *instance)
{
#ifdef MODULE
DMA(instance)->CNTR = 0;
release_mem_region(ZTWO_PADDR(instance->base), 256);
free_irq(IRQ_AMIGA_PORTS, instance);
wd33c93_release();
#endif
return 1;
}
MODULE_LICENSE("GPL");
Reference in New Issue View Git Blame Copy Permalink