#ifndef _SPARC64_CPUDATA_H
#define _SPARC64_CPUDATA_H
+#include <asm/hypervisor.h>
+#include <asm/asi.h>
+
#ifndef __ASSEMBLY__
#include <linux/percpu.h>
typedef struct {
/* Dcache line 1 */
unsigned int __softirq_pending; /* must be 1st, see rtrap.S */
- unsigned int multiplier;
- unsigned int counter;
- unsigned int idle_volume;
+ unsigned int __pad0;
unsigned long clock_tick; /* %tick's per second */
- unsigned long udelay_val;
+ unsigned long __pad;
+ unsigned int __pad1;
+ unsigned int __pad2;
/* Dcache line 2, rarely used */
unsigned int dcache_size;
unsigned int icache_line_size;
unsigned int ecache_size;
unsigned int ecache_line_size;
- unsigned int __pad3;
- unsigned int __pad4;
+ int core_id;
+ int proc_id;
} cpuinfo_sparc;
DECLARE_PER_CPU(cpuinfo_sparc, __cpu_data);
*/
struct thread_info;
struct trap_per_cpu {
-/* D-cache line 1 */
+/* D-cache line 1: Basic thread information, cpu and device mondo queues */
struct thread_info *thread;
unsigned long pgd_paddr;
- unsigned long __pad1[2];
-
-/* D-cache line 2 */
- unsigned long __pad2[4];
+ unsigned long cpu_mondo_pa;
+ unsigned long dev_mondo_pa;
+
+/* D-cache line 2: Error Mondo Queue and kernel buffer pointers */
+ unsigned long resum_mondo_pa;
+ unsigned long resum_kernel_buf_pa;
+ unsigned long nonresum_mondo_pa;
+ unsigned long nonresum_kernel_buf_pa;
+
+/* 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 tsb_huge;
+ unsigned long tsb_huge_temp;
+
+/* Dcache line 8: IRQ work list, and keep trap_block a power-of-2 in size. */
+ unsigned long irq_worklist_pa;
+ unsigned int cpu_mondo_qmask;
+ unsigned int dev_mondo_qmask;
+ unsigned int resum_qmask;
+ unsigned int nonresum_qmask;
+ void *hdesc;
} __attribute__((aligned(64)));
extern struct trap_per_cpu trap_block[NR_CPUS];
-extern void init_cur_cpu_trap(void);
-extern void per_cpu_patch(void);
+extern void init_cur_cpu_trap(struct thread_info *);
extern void setup_tba(void);
+extern int ncpus_probed;
+
+extern unsigned long real_hard_smp_processor_id(void);
+
+struct cpuid_patch_entry {
+ unsigned int addr;
+ unsigned int cheetah_safari[4];
+ unsigned int cheetah_jbus[4];
+ unsigned int starfire[4];
+ unsigned int sun4v[4];
+};
+extern struct cpuid_patch_entry __cpuid_patch, __cpuid_patch_end;
+
+struct sun4v_1insn_patch_entry {
+ unsigned int addr;
+ unsigned int insn;
+};
+extern struct sun4v_1insn_patch_entry __sun4v_1insn_patch,
+ __sun4v_1insn_patch_end;
+
+struct sun4v_2insn_patch_entry {
+ unsigned int addr;
+ unsigned int insns[2];
+};
+extern struct sun4v_2insn_patch_entry __sun4v_2insn_patch,
+ __sun4v_2insn_patch_end;
#endif /* !(__ASSEMBLY__) */
-#define TRAP_PER_CPU_THREAD 0x00
-#define TRAP_PER_CPU_PGD_PADDR 0x08
-
-#define TRAP_BLOCK_SZ_SHIFT 6
-
-/* Clobbers %g1, loads %g6 with local processor's cpuid */
-#define __GET_CPUID \
- ba,pt %xcc, __get_cpu_id; \
- rd %pc, %g1;
-
-/* Clobbers %g1, current address space PGD phys address into %g7. */
-#define TRAP_LOAD_PGD_PHYS \
- __GET_CPUID \
- sllx %g6, TRAP_BLOCK_SZ_SHIFT, %g6; \
- sethi %hi(trap_block), %g7; \
- or %g7, %lo(trap_block), %g7; \
- add %g7, %g6, %g7; \
- ldx [%g7 + TRAP_PER_CPU_PGD_PADDR], %g7;
-
-/* Clobbers %g1, loads local processor's IRQ work area into %g6. */
-#define TRAP_LOAD_IRQ_WORK \
- __GET_CPUID \
- sethi %hi(__irq_work), %g1; \
- sllx %g6, 6, %g6; \
- or %g1, %lo(__irq_work), %g1; \
- add %g1, %g6, %g6;
-
-/* Clobbers %g1, loads %g6 with current thread info pointer. */
-#define TRAP_LOAD_THREAD_REG \
- __GET_CPUID \
- sllx %g6, TRAP_BLOCK_SZ_SHIFT, %g6; \
- sethi %hi(trap_block), %g1; \
- or %g1, %lo(trap_block), %g1; \
- ldx [%g1 + %g6], %g6;
-
-/* Given the current thread info pointer in %g6, load the per-cpu
- * area base of the current processor into %g5. REG1 and REG2 are
+#define TRAP_PER_CPU_THREAD 0x00
+#define TRAP_PER_CPU_PGD_PADDR 0x08
+#define TRAP_PER_CPU_CPU_MONDO_PA 0x10
+#define TRAP_PER_CPU_DEV_MONDO_PA 0x18
+#define TRAP_PER_CPU_RESUM_MONDO_PA 0x20
+#define TRAP_PER_CPU_RESUM_KBUF_PA 0x28
+#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_PER_CPU_TSB_HUGE 0xd0
+#define TRAP_PER_CPU_TSB_HUGE_TEMP 0xd8
+#define TRAP_PER_CPU_IRQ_WORKLIST_PA 0xe0
+#define TRAP_PER_CPU_CPU_MONDO_QMASK 0xe8
+#define TRAP_PER_CPU_DEV_MONDO_QMASK 0xec
+#define TRAP_PER_CPU_RESUM_QMASK 0xf0
+#define TRAP_PER_CPU_NONRESUM_QMASK 0xf4
+
+#define TRAP_BLOCK_SZ_SHIFT 8
+
+#include <asm/scratchpad.h>
+
+#define __GET_CPUID(REG) \
+ /* Spitfire implementation (default). */ \
+661: ldxa [%g0] ASI_UPA_CONFIG, REG; \
+ srlx REG, 17, REG; \
+ and REG, 0x1f, REG; \
+ nop; \
+ .section .cpuid_patch, "ax"; \
+ /* Instruction location. */ \
+ .word 661b; \
+ /* Cheetah Safari implementation. */ \
+ ldxa [%g0] ASI_SAFARI_CONFIG, REG; \
+ srlx REG, 17, REG; \
+ and REG, 0x3ff, REG; \
+ nop; \
+ /* Cheetah JBUS implementation. */ \
+ ldxa [%g0] ASI_JBUS_CONFIG, REG; \
+ srlx REG, 17, REG; \
+ and REG, 0x1f, REG; \
+ nop; \
+ /* Starfire implementation. */ \
+ sethi %hi(0x1fff40000d0 >> 9), REG; \
+ sllx REG, 9, REG; \
+ or REG, 0xd0, REG; \
+ lduwa [REG] ASI_PHYS_BYPASS_EC_E, REG;\
+ /* sun4v implementation. */ \
+ mov SCRATCHPAD_CPUID, REG; \
+ ldxa [REG] ASI_SCRATCHPAD, REG; \
+ nop; \
+ nop; \
+ .previous;
+
+#ifdef CONFIG_SMP
+
+#define TRAP_LOAD_TRAP_BLOCK(DEST, TMP) \
+ __GET_CPUID(TMP) \
+ sethi %hi(trap_block), DEST; \
+ sllx TMP, TRAP_BLOCK_SZ_SHIFT, TMP; \
+ or DEST, %lo(trap_block), DEST; \
+ add DEST, TMP, DEST; \
+
+/* Clobbers TMP, current address space PGD phys address into DEST. */
+#define TRAP_LOAD_PGD_PHYS(DEST, TMP) \
+ TRAP_LOAD_TRAP_BLOCK(DEST, TMP) \
+ ldx [DEST + TRAP_PER_CPU_PGD_PADDR], DEST;
+
+/* Clobbers TMP, loads local processor's IRQ work area into DEST. */
+#define TRAP_LOAD_IRQ_WORK_PA(DEST, TMP) \
+ TRAP_LOAD_TRAP_BLOCK(DEST, TMP) \
+ add DEST, TRAP_PER_CPU_IRQ_WORKLIST_PA, DEST;
+
+/* Clobbers TMP, loads DEST with current thread info pointer. */
+#define TRAP_LOAD_THREAD_REG(DEST, TMP) \
+ TRAP_LOAD_TRAP_BLOCK(DEST, TMP) \
+ ldx [DEST + TRAP_PER_CPU_THREAD], DEST;
+
+/* Given the current thread info pointer in THR, load the per-cpu
+ * area base of the current processor into DEST. REG1, REG2, and REG3 are
* clobbered.
+ *
+ * You absolutely cannot use DEST as a temporary in this code. The
+ * reason is that traps can happen during execution, and return from
+ * trap will load the fully resolved DEST per-cpu base. This can corrupt
+ * the calculations done by the macro mid-stream.
*/
-#ifdef CONFIG_SMP
-#define LOAD_PER_CPU_BASE(REG1, REG2) \
- ldub [%g6 + TI_CPU], REG1; \
- sethi %hi(__per_cpu_shift), %g5; \
+#define LOAD_PER_CPU_BASE(DEST, THR, REG1, REG2, REG3) \
+ lduh [THR + TI_CPU], REG1; \
+ sethi %hi(__per_cpu_shift), REG3; \
sethi %hi(__per_cpu_base), REG2; \
- ldx [%g5 + %lo(__per_cpu_shift)], %g5; \
+ ldx [REG3 + %lo(__per_cpu_shift)], REG3; \
ldx [REG2 + %lo(__per_cpu_base)], REG2; \
- sllx REG1, %g5, %g5; \
- add %g5, REG2, %g5;
+ sllx REG1, REG3, REG3; \
+ add REG3, REG2, DEST;
+
#else
-#define LOAD_PER_CPU_BASE(REG1, REG2)
-#endif
+
+#define TRAP_LOAD_TRAP_BLOCK(DEST, TMP) \
+ sethi %hi(trap_block), DEST; \
+ or DEST, %lo(trap_block), DEST; \
+
+/* Uniprocessor versions, we know the cpuid is zero. */
+#define TRAP_LOAD_PGD_PHYS(DEST, TMP) \
+ TRAP_LOAD_TRAP_BLOCK(DEST, TMP) \
+ ldx [DEST + TRAP_PER_CPU_PGD_PADDR], DEST;
+
+/* Clobbers TMP, loads local processor's IRQ work area into DEST. */
+#define TRAP_LOAD_IRQ_WORK_PA(DEST, TMP) \
+ TRAP_LOAD_TRAP_BLOCK(DEST, TMP) \
+ add DEST, TRAP_PER_CPU_IRQ_WORKLIST_PA, DEST;
+
+#define TRAP_LOAD_THREAD_REG(DEST, TMP) \
+ TRAP_LOAD_TRAP_BLOCK(DEST, TMP) \
+ ldx [DEST + TRAP_PER_CPU_THREAD], DEST;
+
+/* No per-cpu areas on uniprocessor, so no need to load DEST. */
+#define LOAD_PER_CPU_BASE(DEST, THR, REG1, REG2, REG3)
+
+#endif /* !(CONFIG_SMP) */
#endif /* _SPARC64_CPUDATA_H */
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