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Diffstat (limited to 'arch/ia64/sn/pci/pcibr/pcibr_ate.c')
-rw-r--r--arch/ia64/sn/pci/pcibr/pcibr_ate.c177
1 files changed, 0 insertions, 177 deletions
diff --git a/arch/ia64/sn/pci/pcibr/pcibr_ate.c b/arch/ia64/sn/pci/pcibr/pcibr_ate.c
deleted file mode 100644
index b67bb4cb73ff..000000000000
--- a/arch/ia64/sn/pci/pcibr/pcibr_ate.c
+++ /dev/null
@@ -1,177 +0,0 @@
-/*
- * This file is subject to the terms and conditions of the GNU General Public
- * License. See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * Copyright (C) 2001-2006 Silicon Graphics, Inc. All rights reserved.
- */
-
-#include <linux/types.h>
-#include <asm/sn/sn_sal.h>
-#include <asm/sn/pcibr_provider.h>
-#include <asm/sn/pcibus_provider_defs.h>
-#include <asm/sn/pcidev.h>
-
-int pcibr_invalidate_ate; /* by default don't invalidate ATE on free */
-
-/*
- * mark_ate: Mark the ate as either free or inuse.
- */
-static void mark_ate(struct ate_resource *ate_resource, int start, int number,
- u64 value)
-{
- u64 *ate = ate_resource->ate;
- int index;
- int length = 0;
-
- for (index = start; length < number; index++, length++)
- ate[index] = value;
-}
-
-/*
- * find_free_ate: Find the first free ate index starting from the given
- * index for the desired consecutive count.
- */
-static int find_free_ate(struct ate_resource *ate_resource, int start,
- int count)
-{
- u64 *ate = ate_resource->ate;
- int index;
- int start_free;
-
- for (index = start; index < ate_resource->num_ate;) {
- if (!ate[index]) {
- int i;
- int free;
- free = 0;
- start_free = index; /* Found start free ate */
- for (i = start_free; i < ate_resource->num_ate; i++) {
- if (!ate[i]) { /* This is free */
- if (++free == count)
- return start_free;
- } else {
- index = i + 1;
- break;
- }
- }
- if (i >= ate_resource->num_ate)
- return -1;
- } else
- index++; /* Try next ate */
- }
-
- return -1;
-}
-
-/*
- * free_ate_resource: Free the requested number of ATEs.
- */
-static inline void free_ate_resource(struct ate_resource *ate_resource,
- int start)
-{
- mark_ate(ate_resource, start, ate_resource->ate[start], 0);
- if ((ate_resource->lowest_free_index > start) ||
- (ate_resource->lowest_free_index < 0))
- ate_resource->lowest_free_index = start;
-}
-
-/*
- * alloc_ate_resource: Allocate the requested number of ATEs.
- */
-static inline int alloc_ate_resource(struct ate_resource *ate_resource,
- int ate_needed)
-{
- int start_index;
-
- /*
- * Check for ate exhaustion.
- */
- if (ate_resource->lowest_free_index < 0)
- return -1;
-
- /*
- * Find the required number of free consecutive ates.
- */
- start_index =
- find_free_ate(ate_resource, ate_resource->lowest_free_index,
- ate_needed);
- if (start_index >= 0)
- mark_ate(ate_resource, start_index, ate_needed, ate_needed);
-
- ate_resource->lowest_free_index =
- find_free_ate(ate_resource, ate_resource->lowest_free_index, 1);
-
- return start_index;
-}
-
-/*
- * Allocate "count" contiguous Bridge Address Translation Entries
- * on the specified bridge to be used for PCI to XTALK mappings.
- * Indices in rm map range from 1..num_entries. Indices returned
- * to caller range from 0..num_entries-1.
- *
- * Return the start index on success, -1 on failure.
- */
-int pcibr_ate_alloc(struct pcibus_info *pcibus_info, int count)
-{
- int status;
- unsigned long flags;
-
- spin_lock_irqsave(&pcibus_info->pbi_lock, flags);
- status = alloc_ate_resource(&pcibus_info->pbi_int_ate_resource, count);
- spin_unlock_irqrestore(&pcibus_info->pbi_lock, flags);
-
- return status;
-}
-
-/*
- * Setup an Address Translation Entry as specified. Use either the Bridge
- * internal maps or the external map RAM, as appropriate.
- */
-static inline u64 __iomem *pcibr_ate_addr(struct pcibus_info *pcibus_info,
- int ate_index)
-{
- if (ate_index < pcibus_info->pbi_int_ate_size) {
- return pcireg_int_ate_addr(pcibus_info, ate_index);
- }
- panic("pcibr_ate_addr: invalid ate_index 0x%x", ate_index);
-}
-
-/*
- * Update the ate.
- */
-inline void
-ate_write(struct pcibus_info *pcibus_info, int ate_index, int count,
- volatile u64 ate)
-{
- while (count-- > 0) {
- if (ate_index < pcibus_info->pbi_int_ate_size) {
- pcireg_int_ate_set(pcibus_info, ate_index, ate);
- } else {
- panic("ate_write: invalid ate_index 0x%x", ate_index);
- }
- ate_index++;
- ate += IOPGSIZE;
- }
-
- pcireg_tflush_get(pcibus_info); /* wait until Bridge PIO complete */
-}
-
-void pcibr_ate_free(struct pcibus_info *pcibus_info, int index)
-{
-
- volatile u64 ate;
- int count;
- unsigned long flags;
-
- if (pcibr_invalidate_ate) {
- /* For debugging purposes, clear the valid bit in the ATE */
- ate = *pcibr_ate_addr(pcibus_info, index);
- count = pcibus_info->pbi_int_ate_resource.ate[index];
- ate_write(pcibus_info, index, count, (ate & ~PCI32_ATE_V));
- }
-
- spin_lock_irqsave(&pcibus_info->pbi_lock, flags);
- free_ate_resource(&pcibus_info->pbi_int_ate_resource, index);
- spin_unlock_irqrestore(&pcibus_info->pbi_lock, flags);
-}