ALSA: ctxfi - Remove PAGE_SIZE limitation

Remove the limitation of PAGE_SIZE to be 4k by defining the own
page size and macros for 4k.  8kb page size could be natively supported,
but it's disabled right now for simplicity.

Also, clean up using upper_32_bits() macro.

Signed-off-by: Takashi Iwai <tiwai@suse.de>

5 files changed, 30 insertions, 37 deletions

diff --git a/sound/pci/Kconfig b/sound/pci/Kconfig
index 2d7fef5df017..3a7640feaf92 100644
--- a/sound/pci/Kconfig
+++ b/sound/pci/Kconfig
@@ -277,7 +277,6 @@ config SND_CS5535AUDIO
 
 config SND_CTXFI
         tristate "Creative Sound Blaster X-Fi"
-        depends on X86
         select SND_PCM
         help
           If you want to use soundcards based on Creative Sound Blastr X-Fi
diff --git a/sound/pci/ctxfi/cthw20k1.c b/sound/pci/ctxfi/cthw20k1.c
index 44283bd7b2df..b7b8e6f41d0d 100644
--- a/sound/pci/ctxfi/cthw20k1.c
+++ b/sound/pci/ctxfi/cthw20k1.c
@@ -1249,19 +1249,15 @@ static int hw_trn_init(struct hw *hw, const struct trn_conf *info)
         }
 
         trnctl = 0x13;  /* 32-bit, 4k-size page */
-#if BITS_PER_LONG == 64
-        ptp_phys_low = info->vm_pgt_phys & ((1UL<<32)-1);
-        ptp_phys_high = (info->vm_pgt_phys>>32) & ((1UL<<32)-1);
-        trnctl |= (1<<2);
-#elif BITS_PER_LONG == 32
-        ptp_phys_low = info->vm_pgt_phys & (~0UL);
-        ptp_phys_high = 0;
-#else
-#       error "Unknown BITS_PER_LONG!"
-#endif
+        ptp_phys_low = (u32)info->vm_pgt_phys;
+        ptp_phys_high = upper_32_bits(info->vm_pgt_phys);
+        if (sizeof(void *) == 8) /* 64bit address */
+                trnctl |= (1 << 2);
+#if 0 /* Only 4k h/w pages for simplicitiy */
 #if PAGE_SIZE == 8192
         trnctl |= (1<<5);
 #endif
+#endif
         hw_write_20kx(hw, PTPALX, ptp_phys_low);
         hw_write_20kx(hw, PTPAHX, ptp_phys_high);
         hw_write_20kx(hw, TRNCTL, trnctl);
diff --git a/sound/pci/ctxfi/cthw20k2.c b/sound/pci/ctxfi/cthw20k2.c
index 7c24c2ca96bd..349728765f2c 100644
--- a/sound/pci/ctxfi/cthw20k2.c
+++ b/sound/pci/ctxfi/cthw20k2.c
@@ -1203,19 +1203,10 @@ static int hw_trn_init(struct hw *hw, const struct trn_conf *info)
         }
 
         vmctl = 0x80000C0F;  /* 32-bit, 4k-size page */
-#if BITS_PER_LONG == 64
-        ptp_phys_low = info->vm_pgt_phys & ((1UL<<32)-1);
-        ptp_phys_high = (info->vm_pgt_phys>>32) & ((1UL<<32)-1);
-        vmctl |= (3<<8);
-#elif BITS_PER_LONG == 32
-        ptp_phys_low = info->vm_pgt_phys & (~0UL);
-        ptp_phys_high = 0;
-#else
-#       error "Unknown BITS_PER_LONG!"
-#endif
-#if PAGE_SIZE == 8192
-#       error "Don't support 8k-page!"
-#endif
+        ptp_phys_low = (u32)info->vm_pgt_phys;
+        ptp_phys_high = upper_32_bits(info->vm_pgt_phys);
+        if (sizeof(void *) == 8) /* 64bit address */
+                vmctl |= (3 << 8);
         /* Write page table physical address to all PTPAL registers */
         for (i = 0; i < 64; i++) {
                 hw_write_20kx(hw, VMEM_PTPAL+(16*i), ptp_phys_low);
diff --git a/sound/pci/ctxfi/ctvmem.c b/sound/pci/ctxfi/ctvmem.c
index 363b67e3a9e7..74a03623d047 100644
--- a/sound/pci/ctxfi/ctvmem.c
+++ b/sound/pci/ctxfi/ctvmem.c
@@ -18,12 +18,11 @@
 #include "ctvmem.h"
 #include <linux/slab.h>
 #include <linux/mm.h>
-#include <asm/page.h>   /* for PAGE_SIZE macro definition */
 #include <linux/io.h>
 #include <asm/pgtable.h>
 
-#define CT_PTES_PER_PAGE (PAGE_SIZE / sizeof(void *))
-#define CT_ADDRS_PER_PAGE (CT_PTES_PER_PAGE * PAGE_SIZE)
+#define CT_PTES_PER_PAGE (CT_PAGE_SIZE / sizeof(void *))
+#define CT_ADDRS_PER_PAGE (CT_PTES_PER_PAGE * CT_PAGE_SIZE)
 
 /* *
  * Find or create vm block based on requested @size.
@@ -138,24 +137,24 @@ ct_vm_map(struct ct_vm *vm, void *host_addr, int size)
                 return NULL;
         }
 
-        start_phys = (virt_to_phys(host_addr) & PAGE_MASK);
-        pages = (PAGE_ALIGN(virt_to_phys(host_addr) + size)
-                        - start_phys) >> PAGE_SHIFT;
+        start_phys = (virt_to_phys(host_addr) & CT_PAGE_MASK);
+        pages = (CT_PAGE_ALIGN(virt_to_phys(host_addr) + size)
+                        - start_phys) >> CT_PAGE_SHIFT;
 
         ptp = vm->ptp[0];
 
-        block = get_vm_block(vm, (pages << PAGE_SHIFT));
+        block = get_vm_block(vm, (pages << CT_PAGE_SHIFT));
         if (block == NULL) {
                 printk(KERN_ERR "ctxfi: No virtual memory block that is big "
                                   "enough to allocate!\n");
                 return NULL;
         }
 
-        pte_start = (block->addr >> PAGE_SHIFT);
+        pte_start = (block->addr >> CT_PAGE_SHIFT);
         for (i = 0; i < pages; i++)
-                ptp[pte_start+i] = start_phys + (i << PAGE_SHIFT);
+                ptp[pte_start+i] = start_phys + (i << CT_PAGE_SHIFT);
 
-        block->addr += (virt_to_phys(host_addr) & (~PAGE_MASK));
+        block->addr += (virt_to_phys(host_addr) & (~CT_PAGE_MASK));
         block->size = size;
 
         return block;
@@ -164,9 +163,9 @@ ct_vm_map(struct ct_vm *vm, void *host_addr, int size)
 static void ct_vm_unmap(struct ct_vm *vm, struct ct_vm_block *block)
 {
         /* do unmapping */
-        block->size = ((block->addr + block->size + PAGE_SIZE - 1)
-                        & PAGE_MASK) - (block->addr & PAGE_MASK);
-        block->addr &= PAGE_MASK;
+        block->size = ((block->addr + block->size + CT_PAGE_SIZE - 1)
+                        & CT_PAGE_MASK) - (block->addr & CT_PAGE_MASK);
+        block->addr &= CT_PAGE_MASK;
         put_vm_block(vm, block);
 }
 
diff --git a/sound/pci/ctxfi/ctvmem.h b/sound/pci/ctxfi/ctvmem.h
index 618952efa5b3..17d2d37a9ea7 100644
--- a/sound/pci/ctxfi/ctvmem.h
+++ b/sound/pci/ctxfi/ctvmem.h
@@ -23,6 +23,14 @@
 #include <linux/mutex.h>
 #include <linux/list.h>
 
+/* The chip can handle the page table of 4k pages
+ * (emu20k1 can handle even 8k pages, but we don't use it right now)
+ */
+#define CT_PAGE_SIZE    4096
+#define CT_PAGE_SHIFT   12
+#define CT_PAGE_MASK    (~(PAGE_SIZE - 1))
+#define CT_PAGE_ALIGN(addr)     ALIGN(addr, CT_PAGE_SIZE)
+
 struct ct_vm_block {
         unsigned int addr;      /* starting logical addr of this block */
         unsigned int size;      /* size of this device virtual mem block */