[POWERPC] cpm2: Infrastructure code cleanup.

Mostly sparse fixes (__iomem annotations, etc); also, cpm2_immr
is used rather than creating many temporary mappings.

Signed-off-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>

5 files changed, 49 insertions, 34 deletions

diff --git a/arch/powerpc/sysdev/cpm2_common.c b/arch/powerpc/sysdev/cpm2_common.c
index 3bf89b32476..0330ca49092 100644
--- a/arch/powerpc/sysdev/cpm2_common.c
+++ b/arch/powerpc/sysdev/cpm2_common.c
@@ -33,6 +33,8 @@
 #include <linux/mm.h>
 #include <linux/interrupt.h>
 #include <linux/module.h>
+#include <linux/of.h>
+
 #include <asm/io.h>
 #include <asm/irq.h>
 #include <asm/mpc8260.h>
@@ -45,13 +47,12 @@
 #include <sysdev/fsl_soc.h>
 
 static void cpm2_dpinit(void);
-cpm_cpm2_t      *cpmp;          /* Pointer to comm processor space */
+cpm_cpm2_t __iomem *cpmp; /* Pointer to comm processor space */
 
 /* We allocate this here because it is used almost exclusively for
  * the communication processor devices.
  */
-cpm2_map_t *cpm2_immr;
-intctl_cpm2_t *cpm2_intctl;
+cpm2_map_t __iomem *cpm2_immr;
 
 #define CPM_MAP_SIZE    (0x40000)       /* 256k - the PQ3 reserve this amount
                                            of space for CPM as it is larger
@@ -60,8 +61,11 @@ intctl_cpm2_t *cpm2_intctl;
 void
 cpm2_reset(void)
 {
-        cpm2_immr = (cpm2_map_t *)ioremap(CPM_MAP_ADDR, CPM_MAP_SIZE);
-        cpm2_intctl = cpm2_map(im_intctl);
+#ifdef CONFIG_PPC_85xx
+        cpm2_immr = ioremap(CPM_MAP_ADDR, CPM_MAP_SIZE);
+#else
+        cpm2_immr = ioremap(get_immrbase(), CPM_MAP_SIZE);
+#endif
 
         /* Reclaim the DP memory for our use.
          */
@@ -91,7 +95,7 @@ cpm2_reset(void)
 void
 cpm_setbrg(uint brg, uint rate)
 {
-        volatile uint   *bp;
+        u32 __iomem *bp;
 
         /* This is good enough to get SMCs running.....
         */
@@ -113,7 +117,8 @@ cpm_setbrg(uint brg, uint rate)
 void
 cpm2_fastbrg(uint brg, uint rate, int div16)
 {
-        volatile uint   *bp;
+        u32 __iomem *bp;
+        u32 val;
 
         if (brg < 4) {
                 bp = cpm2_map_size(im_brgc1, 16);
@@ -123,10 +128,11 @@ cpm2_fastbrg(uint brg, uint rate, int div16)
                 brg -= 4;
         }
         bp += brg;
-        *bp = ((BRG_INT_CLK / rate) << 1) | CPM_BRG_EN;
+        val = ((BRG_INT_CLK / rate) << 1) | CPM_BRG_EN;
         if (div16)
-                *bp |= CPM_BRG_DIV16;
+                val |= CPM_BRG_DIV16;
 
+        out_be32(bp, val);
         cpm2_unmap(bp);
 }
 
@@ -135,8 +141,8 @@ int cpm2_clk_setup(enum cpm_clk_target target, int clock, int mode)
         int ret = 0;
         int shift;
         int i, bits = 0;
-        cpmux_t *im_cpmux;
-        u32 *reg;
+        cpmux_t __iomem *im_cpmux;
+        u32 __iomem *reg;
         u32 mask = 7;
         u8 clk_map [24][3] = {
                 {CPM_CLK_FCC1, CPM_BRG5, 0},
@@ -228,13 +234,33 @@ static spinlock_t cpm_dpmem_lock;
  * until the memory subsystem goes up... */
 static rh_block_t cpm_boot_dpmem_rh_block[16];
 static rh_info_t cpm_dpmem_info;
-static u8* im_dprambase;
+static u8 __iomem *im_dprambase;
 
 static void cpm2_dpinit(void)
 {
-        spin_lock_init(&cpm_dpmem_lock);
+        struct resource r;
+
+#ifdef CONFIG_PPC_CPM_NEW_BINDING
+        struct device_node *np;
+
+        np = of_find_compatible_node(NULL, NULL, "fsl,cpm2");
+        if (!np)
+                panic("Cannot find CPM2 node");
 
-        im_dprambase = ioremap(CPM_MAP_ADDR, CPM_DATAONLY_BASE + CPM_DATAONLY_SIZE);
+        if (of_address_to_resource(np, 1, &r))
+                panic("Cannot get CPM2 resource 1");
+
+        of_node_put(np);
+#else
+        r.start = CPM_MAP_ADDR;
+        r.end = r.start + CPM_DATAONLY_BASE + CPM_DATAONLY_SIZE - 1;
+#endif
+
+        im_dprambase = ioremap(r.start, r.end - r.start + 1);
+        if (!im_dprambase)
+                panic("Cannot map DPRAM");
+
+        spin_lock_init(&cpm_dpmem_lock);
 
         /* initialize the info header */
         rh_init(&cpm_dpmem_info, 1,
@@ -248,7 +274,7 @@ static void cpm2_dpinit(void)
          * varies with the processor and the microcode patches activated.
          * But the following should be at least safe.
          */
-        rh_attach_region(&cpm_dpmem_info, CPM_DATAONLY_BASE, CPM_DATAONLY_SIZE);
+        rh_attach_region(&cpm_dpmem_info, 0, r.end - r.start + 1);
 }
 
 /* This function returns an index into the DPRAM area.
diff --git a/arch/powerpc/sysdev/cpm2_pic.c b/arch/powerpc/sysdev/cpm2_pic.c
index d5b36e0ecbd..5fe65b2f8f3 100644
--- a/arch/powerpc/sysdev/cpm2_pic.c
+++ b/arch/powerpc/sysdev/cpm2_pic.c
@@ -48,7 +48,7 @@
 #define CPM2_IRQ_PORTC15        48
 #define CPM2_IRQ_PORTC0         63
 
-static intctl_cpm2_t *cpm2_intctl;
+static intctl_cpm2_t __iomem *cpm2_intctl;
 
 static struct irq_host *cpm2_pic_host;
 #define NR_MASK_WORDS   ((NR_IRQS + 31) / 32)
diff --git a/include/asm-powerpc/cpm2.h b/include/asm-powerpc/cpm2.h
index 12a2860f9a9..c0365060979 100644
--- a/include/asm-powerpc/cpm2.h
+++ b/include/asm-powerpc/cpm2.h
@@ -107,7 +107,7 @@
 /* Export the base address of the communication processor registers
  * and dual port ram.
  */
-extern          cpm_cpm2_t      *cpmp;   /* Pointer to comm processor */
+extern cpm_cpm2_t __iomem *cpmp; /* Pointer to comm processor */
 
 extern unsigned long cpm_dpalloc(uint size, uint align);
 extern int cpm_dpfree(unsigned long offset);
diff --git a/include/asm-powerpc/fs_pd.h b/include/asm-powerpc/fs_pd.h
index 77e04d01749..64706a0532d 100644
--- a/include/asm-powerpc/fs_pd.h
+++ b/include/asm-powerpc/fs_pd.h
@@ -23,22 +23,9 @@
 #include <asm/mpc85xx.h>
 #endif
 
-#define cpm2_map(member)                                                \
-({                                                                      \
-        u32 offset = offsetof(cpm2_map_t, member);                      \
-        void *addr = ioremap (CPM_MAP_ADDR + offset,                    \
-                              sizeof( ((cpm2_map_t*)0)->member));       \
-        addr;                                                           \
-})
-
-#define cpm2_map_size(member, size)                                     \
-({                                                                      \
-        u32 offset = offsetof(cpm2_map_t, member);                      \
-        void *addr = ioremap (CPM_MAP_ADDR + offset, size);             \
-        addr;                                                           \
-})
-
-#define cpm2_unmap(addr)        iounmap(addr)
+#define cpm2_map(member) (&cpm2_immr->member)
+#define cpm2_map_size(member, size) (&cpm2_immr->member)
+#define cpm2_unmap(addr) do {} while(0)
 #endif
 
 #ifdef CONFIG_8xx
diff --git a/include/asm-powerpc/immap_cpm2.h b/include/asm-powerpc/immap_cpm2.h
index f316a91c628..4080bab0468 100644
--- a/include/asm-powerpc/immap_cpm2.h
+++ b/include/asm-powerpc/immap_cpm2.h
@@ -10,6 +10,8 @@
 #ifndef __IMMAP_CPM2__
 #define __IMMAP_CPM2__
 
+#include <linux/types.h>
+
 /* System configuration registers.
 */
 typedef struct sys_82xx_conf {
@@ -642,7 +644,7 @@ typedef struct immap {
         u8              res11[4096];
 } cpm2_map_t;
 
-extern cpm2_map_t       *cpm2_immr;
+extern cpm2_map_t __iomem *cpm2_immr;
 
 #endif /* __IMMAP_CPM2__ */
 #endif /* __KERNEL__ */