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[SPARC64]: Sun4v cross-call sending support.

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Technically the hypervisor call supports sending in a list
of all cpus to get the cross-call, but I only pass in one
cpu at a time for now.

The multi-cpu support is there, just ifdef'd out so it's easy to
enable or delete it later.

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller
2006-02-08 16:41:20 -08:00
parent 5b0c0572fc
commit 1d2f1f90a1
4 changed files with 163 additions and 4 deletions
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14
include/asm-sparc64/cpudata.h
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@@ -65,8 +65,16 @@ struct trap_per_cpu {
unsigned long nonresum_mondo_pa;
unsigned long nonresum_kernel_buf_pa;
/* Dcache lines 3 and 4: Hypervisor Fault Status */
/* Dcache lines 3, 4, 5, and 6: Hypervisor Fault Status */
struct hv_fault_status fault_info;
/* Dcache line 7: Physical addresses of CPU send mondo block and CPU list. */
unsigned long cpu_mondo_block_pa;
unsigned long cpu_list_pa;
unsigned long __pad1[2];
/* Dcache line 8: Unused, needed to keep trap_block a power-of-2 in size. */
unsigned long __pad2[4];
} __attribute__((aligned(64)));
extern struct trap_per_cpu trap_block[NR_CPUS];
extern void init_cur_cpu_trap(void);
@@ -108,8 +116,10 @@ extern struct sun4v_2insn_patch_entry __sun4v_2insn_patch,
#define TRAP_PER_CPU_NONRESUM_MONDO_PA 0x30
#define TRAP_PER_CPU_NONRESUM_KBUF_PA 0x38
#define TRAP_PER_CPU_FAULT_INFO 0x40
#define TRAP_PER_CPU_CPU_MONDO_BLOCK_PA 0xc0
#define TRAP_PER_CPU_CPU_LIST_PA 0xc8
#define TRAP_BLOCK_SZ_SHIFT 7
#define TRAP_BLOCK_SZ_SHIFT 8
#include <asm/scratchpad.h>