aboutsummaryrefslogtreecommitdiff
path: root/drivers/misc
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/misc')
-rw-r--r--drivers/misc/sgi-gru/Makefile2
-rw-r--r--drivers/misc/sgi-gru/gruhandles.c197
-rw-r--r--drivers/misc/sgi-gru/gruhandles.h176
-rw-r--r--drivers/misc/sgi-gru/grutables.h3
4 files changed, 218 insertions, 160 deletions
diff --git a/drivers/misc/sgi-gru/Makefile b/drivers/misc/sgi-gru/Makefile
index 9e9170b3599..bcd8136d2f9 100644
--- a/drivers/misc/sgi-gru/Makefile
+++ b/drivers/misc/sgi-gru/Makefile
@@ -3,5 +3,5 @@ ifdef CONFIG_SGI_GRU_DEBUG
endif
obj-$(CONFIG_SGI_GRU) := gru.o
-gru-y := grufile.o grumain.o grufault.o grutlbpurge.o gruprocfs.o grukservices.o
+gru-y := grufile.o grumain.o grufault.o grutlbpurge.o gruprocfs.o grukservices.o gruhandles.o
diff --git a/drivers/misc/sgi-gru/gruhandles.c b/drivers/misc/sgi-gru/gruhandles.c
new file mode 100644
index 00000000000..5b82e7def16
--- /dev/null
+++ b/drivers/misc/sgi-gru/gruhandles.c
@@ -0,0 +1,197 @@
+/*
+ * GRU KERNEL MCS INSTRUCTIONS
+ *
+ * Copyright (c) 2008 Silicon Graphics, Inc. All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include <linux/kernel.h>
+#include "gru.h"
+#include "grulib.h"
+#include "grutables.h"
+
+/* 10 sec */
+#ifdef CONFIG_IA64
+#include <asm/processor.h>
+#define GRU_OPERATION_TIMEOUT (((cycles_t) local_cpu_data->itc_freq)*10)
+#else
+#include <asm/tsc.h>
+#define GRU_OPERATION_TIMEOUT ((cycles_t) tsc_khz*10*1000)
+#endif
+
+/* Extract the status field from a kernel handle */
+#define GET_MSEG_HANDLE_STATUS(h) (((*(unsigned long *)(h)) >> 16) & 3)
+
+static void start_instruction(void *h)
+{
+ unsigned long *w0 = h;
+
+ wmb(); /* setting CMD bit must be last */
+ *w0 = *w0 | 1;
+ gru_flush_cache(h);
+}
+
+static int wait_instruction_complete(void *h, enum mcs_op opc)
+{
+ int status;
+ cycles_t start_time = get_cycles();
+
+ while (1) {
+ cpu_relax();
+ status = GET_MSEG_HANDLE_STATUS(h);
+ if (status != CCHSTATUS_ACTIVE)
+ break;
+ if (GRU_OPERATION_TIMEOUT < (get_cycles() - start_time))
+ panic("GRU %p is malfunctioning\n", h);
+ }
+ return status;
+}
+
+#if defined CONFIG_IA64
+static void cch_allocate_set_asids(
+ struct gru_context_configuration_handle *cch, int asidval)
+{
+ int i;
+
+ for (i = 0; i < 8; i++) {
+ cch->asid[i] = (asidval++);
+#if 0
+ /* ZZZ hugepages not supported yet */
+ if (i == RGN_HPAGE)
+ cch->sizeavail[i] = GRU_SIZEAVAIL(hpage_shift);
+ else
+#endif
+ cch->sizeavail[i] = GRU_SIZEAVAIL(PAGE_SHIFT);
+ }
+}
+#elif defined CONFIG_X86_64
+static void cch_allocate_set_asids(
+ struct gru_context_configuration_handle *cch, int asidval)
+{
+ int i;
+
+ for (i = 0; i < 8; i++) {
+ cch->asid[i] = asidval++;
+ cch->sizeavail[i] = GRU_SIZEAVAIL(PAGE_SHIFT) |
+ GRU_SIZEAVAIL(21);
+ }
+}
+#endif
+
+int cch_allocate(struct gru_context_configuration_handle *cch,
+ int asidval, unsigned long cbrmap,
+ unsigned long dsrmap)
+{
+ cch_allocate_set_asids(cch, asidval);
+ cch->dsr_allocation_map = dsrmap;
+ cch->cbr_allocation_map = cbrmap;
+ cch->opc = CCHOP_ALLOCATE;
+ start_instruction(cch);
+ return wait_instruction_complete(cch, cchop_allocate);
+}
+
+int cch_start(struct gru_context_configuration_handle *cch)
+{
+ cch->opc = CCHOP_START;
+ start_instruction(cch);
+ return wait_instruction_complete(cch, cchop_start);
+}
+
+int cch_interrupt(struct gru_context_configuration_handle *cch)
+{
+ cch->opc = CCHOP_INTERRUPT;
+ start_instruction(cch);
+ return wait_instruction_complete(cch, cchop_interrupt);
+}
+
+int cch_deallocate(struct gru_context_configuration_handle *cch)
+{
+ cch->opc = CCHOP_DEALLOCATE;
+ start_instruction(cch);
+ return wait_instruction_complete(cch, cchop_deallocate);
+}
+
+int cch_interrupt_sync(struct gru_context_configuration_handle
+ *cch)
+{
+ cch->opc = CCHOP_INTERRUPT_SYNC;
+ start_instruction(cch);
+ return wait_instruction_complete(cch, cchop_interrupt_sync);
+}
+
+int tgh_invalidate(struct gru_tlb_global_handle *tgh,
+ unsigned long vaddr, unsigned long vaddrmask,
+ int asid, int pagesize, int global, int n,
+ unsigned short ctxbitmap)
+{
+ tgh->vaddr = vaddr;
+ tgh->asid = asid;
+ tgh->pagesize = pagesize;
+ tgh->n = n;
+ tgh->global = global;
+ tgh->vaddrmask = vaddrmask;
+ tgh->ctxbitmap = ctxbitmap;
+ tgh->opc = TGHOP_TLBINV;
+ start_instruction(tgh);
+ return wait_instruction_complete(tgh, tghop_invalidate);
+}
+
+void tfh_write_only(struct gru_tlb_fault_handle *tfh,
+ unsigned long pfn, unsigned long vaddr,
+ int asid, int dirty, int pagesize)
+{
+ tfh->fillasid = asid;
+ tfh->fillvaddr = vaddr;
+ tfh->pfn = pfn;
+ tfh->dirty = dirty;
+ tfh->pagesize = pagesize;
+ tfh->opc = TFHOP_WRITE_ONLY;
+ start_instruction(tfh);
+}
+
+void tfh_write_restart(struct gru_tlb_fault_handle *tfh,
+ unsigned long paddr, int gaa,
+ unsigned long vaddr, int asid, int dirty,
+ int pagesize)
+{
+ tfh->fillasid = asid;
+ tfh->fillvaddr = vaddr;
+ tfh->pfn = paddr >> GRU_PADDR_SHIFT;
+ tfh->gaa = gaa;
+ tfh->dirty = dirty;
+ tfh->pagesize = pagesize;
+ tfh->opc = TFHOP_WRITE_RESTART;
+ start_instruction(tfh);
+}
+
+void tfh_restart(struct gru_tlb_fault_handle *tfh)
+{
+ tfh->opc = TFHOP_RESTART;
+ start_instruction(tfh);
+}
+
+void tfh_user_polling_mode(struct gru_tlb_fault_handle *tfh)
+{
+ tfh->opc = TFHOP_USER_POLLING_MODE;
+ start_instruction(tfh);
+}
+
+void tfh_exception(struct gru_tlb_fault_handle *tfh)
+{
+ tfh->opc = TFHOP_EXCEPTION;
+ start_instruction(tfh);
+}
+
diff --git a/drivers/misc/sgi-gru/gruhandles.h b/drivers/misc/sgi-gru/gruhandles.h
index fb72a52a34a..dfce8ea5da2 100644
--- a/drivers/misc/sgi-gru/gruhandles.h
+++ b/drivers/misc/sgi-gru/gruhandles.h
@@ -495,164 +495,22 @@ enum gru_cbr_state {
/* minimum TLB purge count to ensure a full purge */
#define GRUMAXINVAL 1024UL
-
-/* Extract the status field from a kernel handle */
-#define GET_MSEG_HANDLE_STATUS(h) (((*(unsigned long *)(h)) >> 16) & 3)
-
-static inline void start_instruction(void *h)
-{
- unsigned long *w0 = h;
-
- wmb(); /* setting CMD bit must be last */
- *w0 = *w0 | 1;
- gru_flush_cache(h);
-}
-
-static inline int wait_instruction_complete(void *h)
-{
- int status;
-
- do {
- cpu_relax();
- barrier();
- status = GET_MSEG_HANDLE_STATUS(h);
- } while (status == CCHSTATUS_ACTIVE);
- return status;
-}
-
-#if defined CONFIG_IA64
-static inline void cch_allocate_set_asids(
- struct gru_context_configuration_handle *cch, int asidval)
-{
- int i;
-
- for (i = 0; i <= RGN_HPAGE; i++) { /* assume HPAGE is last region */
- cch->asid[i] = (asidval++);
-#if 0
- /* ZZZ hugepages not supported yet */
- if (i == RGN_HPAGE)
- cch->sizeavail[i] = GRU_SIZEAVAIL(hpage_shift);
- else
-#endif
- cch->sizeavail[i] = GRU_SIZEAVAIL(PAGE_SHIFT);
- }
-}
-#elif defined CONFIG_X86_64
-static inline void cch_allocate_set_asids(
- struct gru_context_configuration_handle *cch, int asidval)
-{
- int i;
-
- for (i = 0; i < 8; i++) {
- cch->asid[i] = asidval++;
- cch->sizeavail[i] = GRU_SIZEAVAIL(PAGE_SHIFT) |
- GRU_SIZEAVAIL(21);
- }
-}
-#endif
-
-static inline int cch_allocate(struct gru_context_configuration_handle *cch,
- int asidval, unsigned long cbrmap,
- unsigned long dsrmap)
-{
- cch_allocate_set_asids(cch, asidval);
- cch->dsr_allocation_map = dsrmap;
- cch->cbr_allocation_map = cbrmap;
- cch->opc = CCHOP_ALLOCATE;
- start_instruction(cch);
- return wait_instruction_complete(cch);
-}
-
-static inline int cch_start(struct gru_context_configuration_handle *cch)
-{
- cch->opc = CCHOP_START;
- start_instruction(cch);
- return wait_instruction_complete(cch);
-}
-
-static inline int cch_interrupt(struct gru_context_configuration_handle *cch)
-{
- cch->opc = CCHOP_INTERRUPT;
- start_instruction(cch);
- return wait_instruction_complete(cch);
-}
-
-static inline int cch_deallocate(struct gru_context_configuration_handle *cch)
-{
- cch->opc = CCHOP_DEALLOCATE;
- start_instruction(cch);
- return wait_instruction_complete(cch);
-}
-
-static inline int cch_interrupt_sync(struct gru_context_configuration_handle
- *cch)
-{
- cch->opc = CCHOP_INTERRUPT_SYNC;
- start_instruction(cch);
- return wait_instruction_complete(cch);
-}
-
-static inline int tgh_invalidate(struct gru_tlb_global_handle *tgh,
- unsigned long vaddr, unsigned long vaddrmask,
- int asid, int pagesize, int global, int n,
- unsigned short ctxbitmap)
-{
- tgh->vaddr = vaddr;
- tgh->asid = asid;
- tgh->pagesize = pagesize;
- tgh->n = n;
- tgh->global = global;
- tgh->vaddrmask = vaddrmask;
- tgh->ctxbitmap = ctxbitmap;
- tgh->opc = TGHOP_TLBINV;
- start_instruction(tgh);
- return wait_instruction_complete(tgh);
-}
-
-static inline void tfh_write_only(struct gru_tlb_fault_handle *tfh,
- unsigned long pfn, unsigned long vaddr,
- int asid, int dirty, int pagesize)
-{
- tfh->fillasid = asid;
- tfh->fillvaddr = vaddr;
- tfh->pfn = pfn;
- tfh->dirty = dirty;
- tfh->pagesize = pagesize;
- tfh->opc = TFHOP_WRITE_ONLY;
- start_instruction(tfh);
-}
-
-static inline void tfh_write_restart(struct gru_tlb_fault_handle *tfh,
- unsigned long paddr, int gaa,
- unsigned long vaddr, int asid, int dirty,
- int pagesize)
-{
- tfh->fillasid = asid;
- tfh->fillvaddr = vaddr;
- tfh->pfn = paddr >> GRU_PADDR_SHIFT;
- tfh->gaa = gaa;
- tfh->dirty = dirty;
- tfh->pagesize = pagesize;
- tfh->opc = TFHOP_WRITE_RESTART;
- start_instruction(tfh);
-}
-
-static inline void tfh_restart(struct gru_tlb_fault_handle *tfh)
-{
- tfh->opc = TFHOP_RESTART;
- start_instruction(tfh);
-}
-
-static inline void tfh_user_polling_mode(struct gru_tlb_fault_handle *tfh)
-{
- tfh->opc = TFHOP_USER_POLLING_MODE;
- start_instruction(tfh);
-}
-
-static inline void tfh_exception(struct gru_tlb_fault_handle *tfh)
-{
- tfh->opc = TFHOP_EXCEPTION;
- start_instruction(tfh);
-}
+int cch_allocate(struct gru_context_configuration_handle *cch,
+ int asidval, unsigned long cbrmap, unsigned long dsrmap);
+
+int cch_start(struct gru_context_configuration_handle *cch);
+int cch_interrupt(struct gru_context_configuration_handle *cch);
+int cch_deallocate(struct gru_context_configuration_handle *cch);
+int cch_interrupt_sync(struct gru_context_configuration_handle *cch);
+int tgh_invalidate(struct gru_tlb_global_handle *tgh, unsigned long vaddr,
+ unsigned long vaddrmask, int asid, int pagesize, int global, int n,
+ unsigned short ctxbitmap);
+void tfh_write_only(struct gru_tlb_fault_handle *tfh, unsigned long pfn,
+ unsigned long vaddr, int asid, int dirty, int pagesize);
+void tfh_write_restart(struct gru_tlb_fault_handle *tfh, unsigned long paddr,
+ int gaa, unsigned long vaddr, int asid, int dirty, int pagesize);
+void tfh_restart(struct gru_tlb_fault_handle *tfh);
+void tfh_user_polling_mode(struct gru_tlb_fault_handle *tfh);
+void tfh_exception(struct gru_tlb_fault_handle *tfh);
#endif /* __GRUHANDLES_H__ */
diff --git a/drivers/misc/sgi-gru/grutables.h b/drivers/misc/sgi-gru/grutables.h
index cc0fc734405..378a0894198 100644
--- a/drivers/misc/sgi-gru/grutables.h
+++ b/drivers/misc/sgi-gru/grutables.h
@@ -239,6 +239,9 @@ struct gru_stats_s {
};
+enum mcs_op {cchop_allocate, cchop_start, cchop_interrupt, cchop_interrupt_sync,
+ cchop_deallocate, tghop_invalidate, mcsop_last};
+
#define OPT_DPRINT 1
#define OPT_STATS 2
#define GRU_QUICKLOOK 4
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-24 11:11:26 +0000