powerpc/QE: switch to the cpm_muram implementation
This is very trivial patch. We're transitioning to the cpm_muram_*
calls. That's it.
Less trivial changes:
- BD_SC_* defines were defined in the cpm.h and qe.h, so to avoid redefines
we remove BD_SC from the qe.h and use cpm.h along with cpm_muram_*
prototypes;
- qe_muram_dump was unused and thus removed;
- added some code to the cpm_common.c to support legacy QE bindings
(data-only node name).
- For convenience, define qe_* calls to cpm_*. So drivers need not to be
changed.
Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
diff --git a/arch/powerpc/sysdev/Makefile b/arch/powerpc/sysdev/Makefile
index 2bfbb39..16a0ed2 100644
--- a/arch/powerpc/sysdev/Makefile
+++ b/arch/powerpc/sysdev/Makefile
@@ -42,6 +42,7 @@
ifeq ($(ARCH),powerpc)
obj-$(CONFIG_CPM) += cpm_common.o
obj-$(CONFIG_CPM2) += cpm2.o cpm2_pic.o
+obj-$(CONFIG_QUICC_ENGINE) += cpm_common.o
obj-$(CONFIG_PPC_DCR) += dcr.o
obj-$(CONFIG_8xx) += mpc8xx_pic.o cpm1.o
obj-$(CONFIG_UCODE_PATCH) += micropatch.o
diff --git a/arch/powerpc/sysdev/cpm_common.c b/arch/powerpc/sysdev/cpm_common.c
index cb7df2d..9b75d16 100644
--- a/arch/powerpc/sysdev/cpm_common.c
+++ b/arch/powerpc/sysdev/cpm_common.c
@@ -85,9 +85,13 @@
np = of_find_compatible_node(NULL, NULL, "fsl,cpm-muram-data");
if (!np) {
- printk(KERN_ERR "Cannot find CPM muram data node");
- ret = -ENODEV;
- goto out;
+ /* try legacy bindings */
+ np = of_find_node_by_name(NULL, "data-only");
+ if (!np) {
+ printk(KERN_ERR "Cannot find CPM muram data node");
+ ret = -ENODEV;
+ goto out;
+ }
}
muram_pbase = of_translate_address(np, zero);
@@ -189,6 +193,12 @@
}
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
diff --git a/arch/powerpc/sysdev/qe_lib/qe.c b/arch/powerpc/sysdev/qe_lib/qe.c
index cff550e..28e05df 100644
--- a/arch/powerpc/sysdev/qe_lib/qe.c
+++ b/arch/powerpc/sysdev/qe_lib/qe.c
@@ -35,7 +35,6 @@
#include <asm/rheap.h>
static void qe_snums_init(void);
-static void qe_muram_init(void);
static int qe_sdma_init(void);
static DEFINE_SPINLOCK(qe_lock);
@@ -325,97 +324,6 @@
return 0;
}
-/*
- * muram_alloc / muram_free bits.
- */
-static DEFINE_SPINLOCK(qe_muram_lock);
-
-/* 16 blocks should be enough to satisfy all requests
- * until the memory subsystem goes up... */
-static rh_block_t qe_boot_muram_rh_block[16];
-static rh_info_t qe_muram_info;
-
-static void qe_muram_init(void)
-{
- struct device_node *np;
- const u32 *address;
- u64 size;
- unsigned int flags;
-
- /* initialize the info header */
- rh_init(&qe_muram_info, 1,
- sizeof(qe_boot_muram_rh_block) /
- sizeof(qe_boot_muram_rh_block[0]), qe_boot_muram_rh_block);
-
- /* Attach the usable muram area */
- /* XXX: This is a subset of the available muram. It
- * varies with the processor and the microcode patches activated.
- */
- np = of_find_compatible_node(NULL, NULL, "fsl,qe-muram-data");
- if (!np) {
- np = of_find_node_by_name(NULL, "data-only");
- if (!np) {
- WARN_ON(1);
- return;
- }
- }
-
- address = of_get_address(np, 0, &size, &flags);
- WARN_ON(!address);
-
- of_node_put(np);
- if (address)
- rh_attach_region(&qe_muram_info, *address, (int)size);
-}
-
-/* This function returns an index into the MURAM area.
- */
-unsigned long qe_muram_alloc(int size, int align)
-{
- unsigned long start;
- unsigned long flags;
-
- spin_lock_irqsave(&qe_muram_lock, flags);
- start = rh_alloc_align(&qe_muram_info, size, align, "QE");
- spin_unlock_irqrestore(&qe_muram_lock, flags);
-
- return start;
-}
-EXPORT_SYMBOL(qe_muram_alloc);
-
-int qe_muram_free(unsigned long offset)
-{
- int ret;
- unsigned long flags;
-
- spin_lock_irqsave(&qe_muram_lock, flags);
- ret = rh_free(&qe_muram_info, offset);
- spin_unlock_irqrestore(&qe_muram_lock, flags);
-
- return ret;
-}
-EXPORT_SYMBOL(qe_muram_free);
-
-/* not sure if this is ever needed */
-unsigned long qe_muram_alloc_fixed(unsigned long offset, int size)
-{
- unsigned long start;
- unsigned long flags;
-
- spin_lock_irqsave(&qe_muram_lock, flags);
- start = rh_alloc_fixed(&qe_muram_info, offset, size, "commproc");
- spin_unlock_irqrestore(&qe_muram_lock, flags);
-
- return start;
-}
-EXPORT_SYMBOL(qe_muram_alloc_fixed);
-
-void qe_muram_dump(void)
-{
- rh_dump(&qe_muram_info);
-}
-EXPORT_SYMBOL(qe_muram_dump);
-
/* The maximum number of RISCs we support */
#define MAX_QE_RISC 2