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Diffstat (limited to 'arch/powerpc/sysdev/bestcomm/sram.c')
-rw-r--r--arch/powerpc/sysdev/bestcomm/sram.c178
1 files changed, 0 insertions, 178 deletions
diff --git a/arch/powerpc/sysdev/bestcomm/sram.c b/arch/powerpc/sysdev/bestcomm/sram.c
deleted file mode 100644
index b6db23e085fb..000000000000
--- a/arch/powerpc/sysdev/bestcomm/sram.c
+++ /dev/null
@@ -1,178 +0,0 @@
-/*
- * Simple memory allocator for on-board SRAM
- *
- *
- * Maintainer : Sylvain Munaut <tnt@246tNt.com>
- *
- * Copyright (C) 2005 Sylvain Munaut <tnt@246tNt.com>
- *
- * This file is licensed under the terms of the GNU General Public License
- * version 2. This program is licensed "as is" without any warranty of any
- * kind, whether express or implied.
- */
-
-#include <linux/err.h>
-#include <linux/kernel.h>
-#include <linux/export.h>
-#include <linux/slab.h>
-#include <linux/spinlock.h>
-#include <linux/string.h>
-#include <linux/ioport.h>
-#include <linux/of.h>
-
-#include <asm/io.h>
-#include <asm/mmu.h>
-
-#include "sram.h"
-
-
-/* Struct keeping our 'state' */
-struct bcom_sram *bcom_sram = NULL;
-EXPORT_SYMBOL_GPL(bcom_sram); /* needed for inline functions */
-
-
-/* ======================================================================== */
-/* Public API */
-/* ======================================================================== */
-/* DO NOT USE in interrupts, if needed in irq handler, we should use the
- _irqsave version of the spin_locks */
-
-int bcom_sram_init(struct device_node *sram_node, char *owner)
-{
- int rv;
- const u32 *regaddr_p;
- u64 regaddr64, size64;
- unsigned int psize;
-
- /* Create our state struct */
- if (bcom_sram) {
- printk(KERN_ERR "%s: bcom_sram_init: "
- "Already initialized !\n", owner);
- return -EBUSY;
- }
-
- bcom_sram = kmalloc(sizeof(struct bcom_sram), GFP_KERNEL);
- if (!bcom_sram) {
- printk(KERN_ERR "%s: bcom_sram_init: "
- "Couldn't allocate internal state !\n", owner);
- return -ENOMEM;
- }
-
- /* Get address and size of the sram */
- regaddr_p = of_get_address(sram_node, 0, &size64, NULL);
- if (!regaddr_p) {
- printk(KERN_ERR "%s: bcom_sram_init: "
- "Invalid device node !\n", owner);
- rv = -EINVAL;
- goto error_free;
- }
-
- regaddr64 = of_translate_address(sram_node, regaddr_p);
-
- bcom_sram->base_phys = (phys_addr_t) regaddr64;
- bcom_sram->size = (unsigned int) size64;
-
- /* Request region */
- if (!request_mem_region(bcom_sram->base_phys, bcom_sram->size, owner)) {
- printk(KERN_ERR "%s: bcom_sram_init: "
- "Couldn't request region !\n", owner);
- rv = -EBUSY;
- goto error_free;
- }
-
- /* Map SRAM */
- /* sram is not really __iomem */
- bcom_sram->base_virt = (void*) ioremap(bcom_sram->base_phys, bcom_sram->size);
-
- if (!bcom_sram->base_virt) {
- printk(KERN_ERR "%s: bcom_sram_init: "
- "Map error SRAM zone 0x%08lx (0x%0x)!\n",
- owner, (long)bcom_sram->base_phys, bcom_sram->size );
- rv = -ENOMEM;
- goto error_release;
- }
-
- /* Create an rheap (defaults to 32 bits word alignment) */
- bcom_sram->rh = rh_create(4);
-
- /* Attach the free zones */
-#if 0
- /* Currently disabled ... for future use only */
- reg_addr_p = of_get_property(sram_node, "available", &psize);
-#else
- regaddr_p = NULL;
- psize = 0;
-#endif
-
- if (!regaddr_p || !psize) {
- /* Attach the whole zone */
- rh_attach_region(bcom_sram->rh, 0, bcom_sram->size);
- } else {
- /* Attach each zone independently */
- while (psize >= 2 * sizeof(u32)) {
- phys_addr_t zbase = of_translate_address(sram_node, regaddr_p);
- rh_attach_region(bcom_sram->rh, zbase - bcom_sram->base_phys, regaddr_p[1]);
- regaddr_p += 2;
- psize -= 2 * sizeof(u32);
- }
- }
-
- /* Init our spinlock */
- spin_lock_init(&bcom_sram->lock);
-
- return 0;
-
-error_release:
- release_mem_region(bcom_sram->base_phys, bcom_sram->size);
-error_free:
- kfree(bcom_sram);
- bcom_sram = NULL;
-
- return rv;
-}
-EXPORT_SYMBOL_GPL(bcom_sram_init);
-
-void bcom_sram_cleanup(void)
-{
- /* Free resources */
- if (bcom_sram) {
- rh_destroy(bcom_sram->rh);
- iounmap((void __iomem *)bcom_sram->base_virt);
- release_mem_region(bcom_sram->base_phys, bcom_sram->size);
- kfree(bcom_sram);
- bcom_sram = NULL;
- }
-}
-EXPORT_SYMBOL_GPL(bcom_sram_cleanup);
-
-void* bcom_sram_alloc(int size, int align, phys_addr_t *phys)
-{
- unsigned long offset;
-
- spin_lock(&bcom_sram->lock);
- offset = rh_alloc_align(bcom_sram->rh, size, align, NULL);
- spin_unlock(&bcom_sram->lock);
-
- if (IS_ERR_VALUE(offset))
- return NULL;
-
- *phys = bcom_sram->base_phys + offset;
- return bcom_sram->base_virt + offset;
-}
-EXPORT_SYMBOL_GPL(bcom_sram_alloc);
-
-void bcom_sram_free(void *ptr)
-{
- unsigned long offset;
-
- if (!ptr)
- return;
-
- offset = ptr - bcom_sram->base_virt;
-
- spin_lock(&bcom_sram->lock);
- rh_free(bcom_sram->rh, offset);
- spin_unlock(&bcom_sram->lock);
-}
-EXPORT_SYMBOL_GPL(bcom_sram_free);
-