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ALSA: ctxfi - Remove PAGE_SIZE limitation

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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>
This commit is contained in:
Takashi Iwai 2009-06-02 15:04:29 +02:00
parent d2b9b96c51
commit cd391e206f
5 changed files with 30 additions and 37 deletions
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1
sound/pci/Kconfig
View file

@ -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

16
sound/pci/ctxfi/cthw20k1.c
View file

@ -1249,18 +1249,14 @@ 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);

17
sound/pci/ctxfi/cthw20k2.c
View file

@ -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);

25
sound/pci/ctxfi/ctvmem.c
View file

@ -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);
}

8
sound/pci/ctxfi/ctvmem.h
View file

@ -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 */