QE/CPM: move muram management functions to qe_common

QE and CPM have the same muram, they use the same management
functions. Now QE support both ARM and PowerPC, it is necessary
to move QE to "driver/soc", so move the muram management functions
from cpm_common to qe_common for preparing to move QE code to "driver/soc"

Signed-off-by: Zhao Qiang <qiang.zhao@freescale.com>
Signed-off-by: Scott Wood <scottwood@freescale.com>

1 files changed, 1 insertions, 207 deletions

diff --git a/arch/powerpc/sysdev/cpm_common.c b/arch/powerpc/sysdev/cpm_common.c
index fcc83cd9cc2f..6993aa8e7242 100644
--- a/arch/powerpc/sysdev/cpm_common.c
+++ b/arch/powerpc/sysdev/cpm_common.c
@@ -17,7 +17,6 @@
  * published by the Free Software Foundation.
  */
 
-#include <linux/genalloc.h>
 #include <linux/init.h>
 #include <linux/of_device.h>
 #include <linux/spinlock.h>
@@ -29,6 +28,7 @@
 #include <asm/udbg.h>
 #include <asm/io.h>
 #include <asm/cpm.h>
+#include <asm/qe.h>
 
 #include <mm/mmu_decl.h>
 
@@ -65,212 +65,6 @@ void __init udbg_init_cpm(void)
 }
 #endif
 
-static struct gen_pool *muram_pool;
-static spinlock_t cpm_muram_lock;
-static u8 __iomem *muram_vbase;
-static phys_addr_t muram_pbase;
-
-struct muram_block {
-	struct list_head head;
-	unsigned long start;
-	int size;
-};
-
-static LIST_HEAD(muram_block_list);
-
-/* max address size we deal with */
-#define OF_MAX_ADDR_CELLS	4
-#define GENPOOL_OFFSET		(4096 * 8)
-
-int cpm_muram_init(void)
-{
-	struct device_node *np;
-	struct resource r;
-	u32 zero[OF_MAX_ADDR_CELLS] = {};
-	resource_size_t max = 0;
-	int i = 0;
-	int ret = 0;
-
-	if (muram_pbase)
-		return 0;
-
-	spin_lock_init(&cpm_muram_lock);
-	np = of_find_compatible_node(NULL, NULL, "fsl,cpm-muram-data");
-	if (!np) {
-		/* try legacy bindings */
-		np = of_find_node_by_name(NULL, "data-only");
-		if (!np) {
-			pr_err("Cannot find CPM muram data node");
-			ret = -ENODEV;
-			goto out_muram;
-		}
-	}
-
-	muram_pool = gen_pool_create(0, -1);
-	muram_pbase = of_translate_address(np, zero);
-	if (muram_pbase == (phys_addr_t)OF_BAD_ADDR) {
-		pr_err("Cannot translate zero through CPM muram node");
-		ret = -ENODEV;
-		goto out_pool;
-	}
-
-	while (of_address_to_resource(np, i++, &r) == 0) {
-		if (r.end > max)
-			max = r.end;
-		ret = gen_pool_add(muram_pool, r.start - muram_pbase +
-				   GENPOOL_OFFSET, resource_size(&r), -1);
-		if (ret) {
-			pr_err("QE: couldn't add muram to pool!\n");
-			goto out_pool;
-		}
-	}
-
-	muram_vbase = ioremap(muram_pbase, max - muram_pbase + 1);
-	if (!muram_vbase) {
-		pr_err("Cannot map QE muram");
-		ret = -ENOMEM;
-		goto out_pool;
-	}
-	goto out_muram;
-out_pool:
-	gen_pool_destroy(muram_pool);
-out_muram:
-	of_node_put(np);
-	return ret;
-}
-
-/*
- * cpm_muram_alloc - allocate the requested size worth of multi-user ram
- * @size: number of bytes to allocate
- * @align: requested alignment, in bytes
- *
- * This function returns an offset into the muram area.
- * Use cpm_dpram_addr() to get the virtual address of the area.
- * Use cpm_muram_free() to free the allocation.
- */
-unsigned long cpm_muram_alloc(unsigned long size, unsigned long align)
-{
-	unsigned long start;
-	unsigned long flags;
-	struct genpool_data_align muram_pool_data;
-
-	spin_lock_irqsave(&cpm_muram_lock, flags);
-	muram_pool_data.align = align;
-	start = cpm_muram_alloc_common(size, gen_pool_first_fit_align,
-				       &muram_pool_data);
-	spin_unlock_irqrestore(&cpm_muram_lock, flags);
-	return start;
-}
-EXPORT_SYMBOL(cpm_muram_alloc);
-
-/**
- * cpm_muram_free - free a chunk of multi-user ram
- * @offset: The beginning of the chunk as returned by cpm_muram_alloc().
- */
-int cpm_muram_free(unsigned long offset)
-{
-	unsigned long flags;
-	int size;
-	struct muram_block *tmp;
-
-	size = 0;
-	spin_lock_irqsave(&cpm_muram_lock, flags);
-	list_for_each_entry(tmp, &muram_block_list, head) {
-		if (tmp->start == offset) {
-			size = tmp->size;
-			list_del(&tmp->head);
-			kfree(tmp);
-			break;
-		}
-	}
-	gen_pool_free(muram_pool, offset + GENPOOL_OFFSET, size);
-	spin_unlock_irqrestore(&cpm_muram_lock, flags);
-	return size;
-}
-EXPORT_SYMBOL(cpm_muram_free);
-
-/*
- * cpm_muram_alloc_fixed - reserve a specific region of multi-user ram
- * @offset: offset of allocation start address
- * @size: number of bytes to allocate
- * This function returns an offset into the muram area
- * Use cpm_dpram_addr() to get the virtual address of the area.
- * Use cpm_muram_free() to free the allocation.
- */
-unsigned long cpm_muram_alloc_fixed(unsigned long offset, unsigned long size)
-{
-	unsigned long start;
-	unsigned long flags;
-	struct genpool_data_fixed muram_pool_data_fixed;
-
-	spin_lock_irqsave(&cpm_muram_lock, flags);
-	muram_pool_data_fixed.offset = offset + GENPOOL_OFFSET;
-	start = cpm_muram_alloc_common(size, gen_pool_fixed_alloc,
-				       &muram_pool_data_fixed);
-	spin_unlock_irqrestore(&cpm_muram_lock, flags);
-	return start;
-}
-EXPORT_SYMBOL(cpm_muram_alloc_fixed);
-
-/*
- * cpm_muram_alloc_common - cpm_muram_alloc common code
- * @size: number of bytes to allocate
- * @algo: algorithm for alloc.
- * @data: data for genalloc's algorithm.
- *
- * This function returns an offset into the muram area.
- */
-unsigned long cpm_muram_alloc_common(unsigned long size, genpool_algo_t algo,
-				     void *data)
-{
-	struct muram_block *entry;
-	unsigned long start;
-
-	start = gen_pool_alloc_algo(muram_pool, size, algo, data);
-	if (!start)
-		goto out2;
-	start = start - GENPOOL_OFFSET;
-	memset_io(cpm_muram_addr(start), 0, size);
-	entry = kmalloc(sizeof(*entry), GFP_KERNEL);
-	if (!entry)
-		goto out1;
-	entry->start = start;
-	entry->size = size;
-	list_add(&entry->head, &muram_block_list);
-
-	return start;
-out1:
-	gen_pool_free(muram_pool, start, size);
-out2:
-	return (unsigned long)-ENOMEM;
-}
-
-/**
- * cpm_muram_addr - turn a muram offset into a virtual address
- * @offset: muram offset to convert
- */
-void __iomem *cpm_muram_addr(unsigned long offset)
-{
-	return muram_vbase + offset;
-}
-EXPORT_SYMBOL(cpm_muram_addr);
-
-unsigned long cpm_muram_offset(void __iomem *addr)
-{
-	return addr - (void __iomem *)muram_vbase;
-}
-EXPORT_SYMBOL(cpm_muram_offset);
-
-/**
- * cpm_muram_dma - turn a muram virtual address into a DMA address
- * @offset: virtual address from cpm_muram_addr() to convert
- */
-dma_addr_t cpm_muram_dma(void __iomem *addr)
-{
-	return muram_pbase + ((u8 __iomem *)addr - muram_vbase);
-}
-EXPORT_SYMBOL(cpm_muram_dma);
-
 #if defined(CONFIG_CPM2) || defined(CONFIG_8xx_GPIO)
 
 struct cpm2_ioports {