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MIPS: Netlogic: Support for multi-chip configuration

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Upto 4 Netlogic XLP SoCs can be connected over ICI links to form a
coherent multi-node system.  Each SoC has its own set of on-chip
devices including PIC.  To support this, add a per SoC stucture and
use it for the PIC and SYS block addresses instead of using global
variables.

Signed-off-by: Jayachandran C <jchandra@broadcom.com>
Patchwork: http://patchwork.linux-mips.org/patch/4469
Signed-off-by: John Crispin <blogic@openwrt.org>
This commit is contained in:
Jayachandran C
2012-10-31 12:01:39 +00:00
committed by John Crispin
parent 2a37b1ae44
commit 77ae798f5b
12 changed files with 176 additions and 86 deletions
Download Patch File Download Diff File Expand all files Collapse all files

42
arch/mips/include/asm/netlogic/common.h
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@@ -46,10 +46,10 @@
#ifndef __ASSEMBLY__
#include <linux/cpumask.h>
#include <linux/spinlock.h>
#include <asm/irq.h>
struct irq_desc;
extern struct plat_smp_ops nlm_smp_ops;
extern char nlm_reset_entry[], nlm_reset_entry_end[];
void nlm_smp_function_ipi_handler(unsigned int irq, struct irq_desc *desc);
void nlm_smp_resched_ipi_handler(unsigned int irq, struct irq_desc *desc);
void nlm_smp_irq_init(void);
@@ -70,10 +70,42 @@ nlm_set_nmi_handler(void *handler)
* Misc.
*/
unsigned int nlm_get_cpu_frequency(void);
void nlm_node_init(int node);
extern struct plat_smp_ops nlm_smp_ops;
extern char nlm_reset_entry[], nlm_reset_entry_end[];
extern unsigned long nlm_common_ebase;
extern int nlm_threads_per_core;
extern uint32_t nlm_coremask;
extern unsigned int nlm_threads_per_core;
extern cpumask_t nlm_cpumask;
struct nlm_soc_info {
unsigned long coremask; /* cores enabled on the soc */
unsigned long ebase;
uint64_t irqmask;
uint64_t sysbase; /* only for XLP */
uint64_t picbase;
spinlock_t piclock;
};
#define NLM_CORES_PER_NODE 8
#define NLM_THREADS_PER_CORE 4
#define NLM_CPUS_PER_NODE (NLM_CORES_PER_NODE * NLM_THREADS_PER_CORE)
#define nlm_get_node(i) (&nlm_nodes[i])
#define NLM_NR_NODES 1
#define nlm_current_node() (&nlm_nodes[0])
struct irq_data;
uint64_t nlm_pci_irqmask(int node);
void nlm_set_pic_extra_ack(int node, int irq, void (*xack)(struct irq_data *));
/*
* The NR_IRQs is divided between nodes, each of them has a separate irq space
*/
static inline int nlm_irq_to_xirq(int node, int irq)
{
return node * NR_IRQS / NLM_NR_NODES + irq;
}
extern struct nlm_soc_info nlm_nodes[NLM_NR_NODES];
extern int nlm_cpu_ready[];
#endif
#endif /* _NETLOGIC_COMMON_H_ */

5
arch/mips/include/asm/netlogic/mips-extns.h
View File

@@ -73,4 +73,9 @@ static inline int hard_smp_processor_id(void)
return __read_32bit_c0_register($15, 1) & 0x3ff;
}
static inline int nlm_nodeid(void)
{
return (__read_32bit_c0_register($15, 1) >> 5) & 0x3;
}
#endif /*_ASM_NLM_MIPS_EXTS_H */

1
arch/mips/include/asm/netlogic/xlp-hal/pic.h
View File

@@ -381,7 +381,6 @@ nlm_pic_init_irt(uint64_t base, int irt, int irq, int hwt)
nlm_pic_write_irt_direct(base, irt, 0, 0, 0, irq, hwt);
}
extern uint64_t nlm_pic_base;
int nlm_irq_to_irt(int irq);
int nlm_irt_to_irq(int irt);

1
arch/mips/include/asm/netlogic/xlp-hal/sys.h
View File

@@ -124,6 +124,5 @@
#define nlm_get_sys_pcibase(node) nlm_pcicfg_base(XLP_IO_SYS_OFFSET(node))
#define nlm_get_sys_regbase(node) (nlm_get_sys_pcibase(node) + XLP_IO_PCI_HDRSZ)
extern uint64_t nlm_sys_base;
#endif
#endif

2
arch/mips/include/asm/netlogic/xlr/pic.h
View File

@@ -258,7 +258,5 @@ nlm_pic_init_irt(uint64_t base, int irt, int irq, int hwt)
nlm_write_reg(base, PIC_IRT_1(irt),
(1 << 30) | (1 << 6) | irq);
}
extern uint64_t nlm_pic_base;
#endif
#endif /* _ASM_NLM_XLR_PIC_H */