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-rw-r--r--arch/sparc64/kernel/entry.S84
-rw-r--r--arch/sparc64/kernel/irq.c4
-rw-r--r--arch/sparc64/kernel/setup.c56
-rw-r--r--arch/sparc64/kernel/smp.c9
-rw-r--r--arch/sparc64/kernel/traps.c4
-rw-r--r--arch/sparc64/kernel/vmlinux.lds.S3
6 files changed, 73 insertions, 87 deletions
diff --git a/arch/sparc64/kernel/entry.S b/arch/sparc64/kernel/entry.S
index 563fa4ec33f..b3511ff5d04 100644
--- a/arch/sparc64/kernel/entry.S
+++ b/arch/sparc64/kernel/entry.S
@@ -1628,84 +1628,10 @@ __flushw_user:
2: retl
nop
- /* Read cpu ID from hardware, return in %g6.
- * (callers_pc - 4) is in %g1. Patched at boot time.
- *
- * Default is spitfire implementation.
- *
- * The instruction sequence needs to be 5 instructions
- * in order to fit the longest implementation, which is
- * currently starfire.
- */
- .align 32
- .globl __get_cpu_id
-__get_cpu_id:
- ldxa [%g0] ASI_UPA_CONFIG, %g6
- srlx %g6, 17, %g6
- jmpl %g1 + 0x4, %g0
- and %g6, 0x1f, %g6
- nop
-
-__get_cpu_id_cheetah_safari:
- ldxa [%g0] ASI_SAFARI_CONFIG, %g6
- srlx %g6, 17, %g6
- jmpl %g1 + 0x4, %g0
- and %g6, 0x3ff, %g6
- nop
-
-__get_cpu_id_cheetah_jbus:
- ldxa [%g0] ASI_JBUS_CONFIG, %g6
- srlx %g6, 17, %g6
- jmpl %g1 + 0x4, %g0
- and %g6, 0x1f, %g6
- nop
-
-__get_cpu_id_starfire:
- sethi %hi(0x1fff40000d0 >> 9), %g6
- sllx %g6, 9, %g6
- or %g6, 0xd0, %g6
- jmpl %g1 + 0x4, %g0
- lduwa [%g6] ASI_PHYS_BYPASS_EC_E, %g6
-
- .globl per_cpu_patch
-per_cpu_patch:
- sethi %hi(this_is_starfire), %o0
- lduw [%o0 + %lo(this_is_starfire)], %o1
- sethi %hi(__get_cpu_id_starfire), %o0
- brnz,pn %o1, 10f
- or %o0, %lo(__get_cpu_id_starfire), %o0
- sethi %hi(tlb_type), %o0
- lduw [%o0 + %lo(tlb_type)], %o1
- brz,pt %o1, 11f
- nop
- rdpr %ver, %o0
- srlx %o0, 32, %o0
- sethi %hi(0x003e0016), %o1
- or %o1, %lo(0x003e0016), %o1
- cmp %o0, %o1
- sethi %hi(__get_cpu_id_cheetah_jbus), %o0
- be,pn %icc, 10f
- or %o0, %lo(__get_cpu_id_cheetah_jbus), %o0
- sethi %hi(__get_cpu_id_cheetah_safari), %o0
- or %o0, %lo(__get_cpu_id_cheetah_safari), %o0
-10:
- sethi %hi(__get_cpu_id), %o1
- or %o1, %lo(__get_cpu_id), %o1
- lduw [%o0 + 0x00], %o2
- stw %o2, [%o1 + 0x00]
- flush %o1 + 0x00
- lduw [%o0 + 0x04], %o2
- stw %o2, [%o1 + 0x04]
- flush %o1 + 0x04
- lduw [%o0 + 0x08], %o2
- stw %o2, [%o1 + 0x08]
- flush %o1 + 0x08
- lduw [%o0 + 0x0c], %o2
- stw %o2, [%o1 + 0x0c]
- flush %o1 + 0x0c
- lduw [%o0 + 0x10], %o2
- stw %o2, [%o1 + 0x10]
- flush %o1 + 0x10
-11:
+#ifdef CONFIG_SMP
+ .globl hard_smp_processor_id
+hard_smp_processor_id:
+ __GET_CPUID(%o0)
retl
nop
+#endif
diff --git a/arch/sparc64/kernel/irq.c b/arch/sparc64/kernel/irq.c
index 3e48af2769d..d069a6feb53 100644
--- a/arch/sparc64/kernel/irq.c
+++ b/arch/sparc64/kernel/irq.c
@@ -39,6 +39,7 @@
#include <asm/cache.h>
#include <asm/cpudata.h>
#include <asm/auxio.h>
+#include <asm/head.h>
#ifdef CONFIG_SMP
static void distribute_irqs(void);
@@ -153,7 +154,8 @@ void enable_irq(unsigned int irq)
unsigned long ver;
__asm__ ("rdpr %%ver, %0" : "=r" (ver));
- if ((ver >> 32) == 0x003e0016) {
+ if ((ver >> 32) == __JALAPENO_ID ||
+ (ver >> 32) == __SERRANO_ID) {
/* We set it to our JBUS ID. */
__asm__ __volatile__("ldxa [%%g0] %1, %0"
: "=r" (tid)
diff --git a/arch/sparc64/kernel/setup.c b/arch/sparc64/kernel/setup.c
index 59a70301a6c..f751d11926b 100644
--- a/arch/sparc64/kernel/setup.c
+++ b/arch/sparc64/kernel/setup.c
@@ -490,6 +490,58 @@ void register_prom_callbacks(void)
"' linux-.soft2 to .soft2");
}
+static void __init per_cpu_patch(void)
+{
+#ifdef CONFIG_SMP
+ struct cpuid_patch_entry *p;
+ unsigned long ver;
+ int is_jbus;
+
+ if (tlb_type == spitfire && !this_is_starfire)
+ return;
+
+ __asm__ ("rdpr %%ver, %0" : "=r" (ver));
+ is_jbus = ((ver >> 32) == __JALAPENO_ID ||
+ (ver >> 32) == __SERRANO_ID);
+
+ p = &__cpuid_patch;
+ while (p < &__cpuid_patch_end) {
+ unsigned long addr = p->addr;
+ unsigned int *insns;
+
+ switch (tlb_type) {
+ case spitfire:
+ insns = &p->starfire[0];
+ break;
+ case cheetah:
+ case cheetah_plus:
+ if (is_jbus)
+ insns = &p->cheetah_jbus[0];
+ else
+ insns = &p->cheetah_safari[0];
+ break;
+ default:
+ prom_printf("Unknown cpu type, halting.\n");
+ prom_halt();
+ };
+
+ *(unsigned int *) (addr + 0) = insns[0];
+ __asm__ __volatile__("flush %0" : : "r" (addr + 0));
+
+ *(unsigned int *) (addr + 4) = insns[1];
+ __asm__ __volatile__("flush %0" : : "r" (addr + 4));
+
+ *(unsigned int *) (addr + 8) = insns[2];
+ __asm__ __volatile__("flush %0" : : "r" (addr + 8));
+
+ *(unsigned int *) (addr + 12) = insns[3];
+ __asm__ __volatile__("flush %0" : : "r" (addr + 12));
+
+ p++;
+ }
+#endif
+}
+
void __init setup_arch(char **cmdline_p)
{
/* Initialize PROM console and command line. */
@@ -507,8 +559,8 @@ void __init setup_arch(char **cmdline_p)
/* Work out if we are starfire early on */
check_if_starfire();
- /* Now we know enough to patch the __get_cpu_id()
- * trampoline used by trap code.
+ /* Now we know enough to patch the get_cpuid sequences
+ * used by trap code.
*/
per_cpu_patch();
diff --git a/arch/sparc64/kernel/smp.c b/arch/sparc64/kernel/smp.c
index 0e7552546d3..16b8eca9754 100644
--- a/arch/sparc64/kernel/smp.c
+++ b/arch/sparc64/kernel/smp.c
@@ -424,7 +424,7 @@ static __inline__ void spitfire_xcall_deliver(u64 data0, u64 data1, u64 data2, c
static void cheetah_xcall_deliver(u64 data0, u64 data1, u64 data2, cpumask_t mask)
{
u64 pstate, ver;
- int nack_busy_id, is_jalapeno;
+ int nack_busy_id, is_jbus;
if (cpus_empty(mask))
return;
@@ -434,7 +434,8 @@ static void cheetah_xcall_deliver(u64 data0, u64 data1, u64 data2, cpumask_t mas
* derivative processor.
*/
__asm__ ("rdpr %%ver, %0" : "=r" (ver));
- is_jalapeno = ((ver >> 32) == 0x003e0016);
+ is_jbus = ((ver >> 32) == __JALAPENO_ID ||
+ (ver >> 32) == __SERRANO_ID);
__asm__ __volatile__("rdpr %%pstate, %0" : "=r" (pstate));
@@ -459,7 +460,7 @@ retry:
for_each_cpu_mask(i, mask) {
u64 target = (i << 14) | 0x70;
- if (!is_jalapeno)
+ if (!is_jbus)
target |= (nack_busy_id << 24);
__asm__ __volatile__(
"stxa %%g0, [%0] %1\n\t"
@@ -512,7 +513,7 @@ retry:
for_each_cpu_mask(i, mask) {
u64 check_mask;
- if (is_jalapeno)
+ if (is_jbus)
check_mask = (0x2UL << (2*i));
else
check_mask = (0x2UL <<
diff --git a/arch/sparc64/kernel/traps.c b/arch/sparc64/kernel/traps.c
index 7e52e897266..1c4744c047a 100644
--- a/arch/sparc64/kernel/traps.c
+++ b/arch/sparc64/kernel/traps.c
@@ -38,6 +38,7 @@
#include <asm/processor.h>
#include <asm/timer.h>
#include <asm/kdebug.h>
+#include <asm/head.h>
#ifdef CONFIG_KMOD
#include <linux/kmod.h>
#endif
@@ -788,7 +789,8 @@ void __init cheetah_ecache_flush_init(void)
cheetah_error_log[i].afsr = CHAFSR_INVALID;
__asm__ ("rdpr %%ver, %0" : "=r" (ver));
- if ((ver >> 32) == 0x003e0016) {
+ if ((ver >> 32) == __JALAPENO_ID ||
+ (ver >> 32) == __SERRANO_ID) {
cheetah_error_table = &__jalapeno_error_table[0];
cheetah_afsr_errors = JPAFSR_ERRORS;
} else if ((ver >> 32) == 0x003e0015) {
diff --git a/arch/sparc64/kernel/vmlinux.lds.S b/arch/sparc64/kernel/vmlinux.lds.S
index 71b943f1c9b..1639d9c935c 100644
--- a/arch/sparc64/kernel/vmlinux.lds.S
+++ b/arch/sparc64/kernel/vmlinux.lds.S
@@ -74,6 +74,9 @@ SECTIONS
__tsb_phys_patch = .;
.tsb_phys_patch : { *(.tsb_phys_patch) }
__tsb_phys_patch_end = .;
+ __cpuid_patch = .;
+ .cpuid_patch : { *(.cpuid_patch) }
+ __cpuid_patch_end = .;
. = ALIGN(8192);
__initramfs_start = .;
.init.ramfs : { *(.init.ramfs) }
generated by cgit v1.2.3 (git 2.25.1) at 2025-01-08 20:01:20 +0000