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ALSA: Clean up SG-buffer helper functions and macros

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Clean up SG-buffer helper functions and macros.  Helpers take substream
as arguments now.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
This commit is contained in:
Takashi Iwai 2008-08-21 13:00:13 +02:00 committed by Jaroslav Kysela
parent 46480b3a5f
commit 77a23f2695
15 changed files with 91 additions and 103 deletions
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12
include/sound/memalloc.h
View File

@ -65,6 +65,11 @@ struct snd_dma_buffer {
/*
* Scatter-Gather generic device pages
*/
void *snd_malloc_sgbuf_pages(struct device *device,
size_t size, struct snd_dma_buffer *dmab,
size_t *res_size);
int snd_free_sgbuf_pages(struct snd_dma_buffer *dmab);
struct snd_sg_page {
void *buf;
dma_addr_t addr;
@ -95,6 +100,13 @@ static inline dma_addr_t snd_sgbuf_get_addr(struct snd_sg_buf *sgbuf, size_t off
return sgbuf->table[offset >> PAGE_SHIFT].addr + offset % PAGE_SIZE;
}
/*
* return the virtual address at the corresponding offset
*/
static inline void *snd_sgbuf_get_ptr(struct snd_sg_buf *sgbuf, size_t offset)
{
return sgbuf->table[offset >> PAGE_SHIFT].buf + offset % PAGE_SIZE;
}
/* allocate/release a buffer */
int snd_dma_alloc_pages(int type, struct device *dev, size_t size,

27
include/sound/pcm.h
View File

@ -974,10 +974,29 @@ int snd_pcm_lib_preallocate_pages_for_all(struct snd_pcm *pcm,
int snd_pcm_lib_malloc_pages(struct snd_pcm_substream *substream, size_t size);
int snd_pcm_lib_free_pages(struct snd_pcm_substream *substream);
#define snd_pcm_substream_sgbuf(substream) ((substream)->runtime->dma_buffer_p->private_data)
#define snd_pcm_sgbuf_pages(size) snd_sgbuf_aligned_pages(size)
#define snd_pcm_sgbuf_get_addr(sgbuf,ofs) snd_sgbuf_get_addr(sgbuf,ofs)
struct page *snd_pcm_sgbuf_ops_page(struct snd_pcm_substream *substream, unsigned long offset);
/*
* SG-buffer handling
*/
#define snd_pcm_substream_sgbuf(substream) \
((substream)->runtime->dma_buffer_p->private_data)
static inline dma_addr_t
snd_pcm_sgbuf_get_addr(struct snd_pcm_substream *substream, unsigned int ofs)
{
struct snd_sg_buf *sg = snd_pcm_substream_sgbuf(substream);
return snd_sgbuf_get_addr(sg, ofs);
}
static inline void *
snd_pcm_sgbuf_get_ptr(struct snd_pcm_substream *substream, unsigned int ofs)
{
struct snd_sg_buf *sg = snd_pcm_substream_sgbuf(substream);
return snd_sgbuf_get_ptr(sg, ofs);
}
struct page *snd_pcm_sgbuf_ops_page(struct snd_pcm_substream *substream,
unsigned long offset);
/* handle mmap counter - PCM mmap callback should handle this counter properly */
static inline void snd_pcm_mmap_data_open(struct vm_area_struct *area)

8
sound/core/memalloc.c
View File

@ -43,14 +43,6 @@ MODULE_DESCRIPTION("Memory allocator for ALSA system.");
MODULE_LICENSE("GPL");
/*
*/
void *snd_malloc_sgbuf_pages(struct device *device,
size_t size, struct snd_dma_buffer *dmab,
size_t *res_size);
int snd_free_sgbuf_pages(struct snd_dma_buffer *dmab);
/*
*/

7
sound/pci/au88x0/au88x0.h
View File

@ -125,7 +125,6 @@ typedef struct {
/* Virtual page extender stuff */
int nr_periods;
int period_bytes;
struct snd_sg_buf *sgbuf; /* DMA Scatter Gather struct */
int period_real;
int period_virt;
@ -195,16 +194,14 @@ static void vortex_adb_setsrc(vortex_t * vortex, int adbdma,
/* DMA Engines. */
static void vortex_adbdma_setbuffers(vortex_t * vortex, int adbdma,
struct snd_sg_buf * sgbuf, int size,
int count);
int size, int count);
static void vortex_adbdma_setmode(vortex_t * vortex, int adbdma, int ie,
int dir, int fmt, int d,
u32 offset);
static void vortex_adbdma_setstartbuffer(vortex_t * vortex, int adbdma, int sb);
#ifndef CHIP_AU8810
static void vortex_wtdma_setbuffers(vortex_t * vortex, int wtdma,
struct snd_sg_buf * sgbuf, int size,
int count);
int size, int count);
static void vortex_wtdma_setmode(vortex_t * vortex, int wtdma, int ie, int fmt, int d, /*int e, */
u32 offset);
static void vortex_wtdma_setstartbuffer(vortex_t * vortex, int wtdma, int sb);

38
sound/pci/au88x0/au88x0_core.c
View File

@ -1097,19 +1097,12 @@ static void vortex_adbdma_setstartbuffer(vortex_t * vortex, int adbdma, int sb)
static void
vortex_adbdma_setbuffers(vortex_t * vortex, int adbdma,
struct snd_sg_buf * sgbuf, int psize, int count)
int psize, int count)
{
stream_t *dma = &vortex->dma_adb[adbdma];
if (sgbuf == NULL) {
printk(KERN_INFO "vortex: FATAL: sgbuf is NULL!\n");
return;
}
//printk(KERN_INFO "vortex: page count = %d, tblcount = %d\n", count, sgbuf->tblsize);
dma->period_bytes = psize;
dma->nr_periods = count;
dma->sgbuf = sgbuf;
dma->cfg0 = 0;
dma->cfg1 = 0;
@ -1120,26 +1113,26 @@ vortex_adbdma_setbuffers(vortex_t * vortex, int adbdma,
dma->cfg1 |= 0x88000000 | 0x44000000 | 0x30000000 | (psize - 1);
hwwrite(vortex->mmio,
VORTEX_ADBDMA_BUFBASE + (adbdma << 4) + 0xc,
snd_sgbuf_get_addr(sgbuf, psize * 3));
snd_pcm_sgbuf_get_addr(dma->substream, psize * 3));
/* 3 pages */
case 3:
dma->cfg0 |= 0x12000000;
dma->cfg1 |= 0x80000000 | 0x40000000 | ((psize - 1) << 0xc);
hwwrite(vortex->mmio,
VORTEX_ADBDMA_BUFBASE + (adbdma << 4) + 0x8,
snd_sgbuf_get_addr(sgbuf, psize * 2));
snd_pcm_sgbuf_get_addr(dma->substream, psize * 2));
/* 2 pages */
case 2:
dma->cfg0 |= 0x88000000 | 0x44000000 | 0x10000000 | (psize - 1);
hwwrite(vortex->mmio,
VORTEX_ADBDMA_BUFBASE + (adbdma << 4) + 0x4,
snd_sgbuf_get_addr(sgbuf, psize));
snd_pcm_sgbuf_get_addr(dma->substream, psize));
/* 1 page */
case 1:
dma->cfg0 |= 0x80000000 | 0x40000000 | ((psize - 1) << 0xc);
hwwrite(vortex->mmio,
VORTEX_ADBDMA_BUFBASE + (adbdma << 4),
snd_sgbuf_get_addr(sgbuf, 0));
snd_pcm_sgbuf_get_addr(dma->substream, 0));
break;
}
//printk("vortex: cfg0 = 0x%x\nvortex: cfg1=0x%x\n", dma->cfg0, dma->cfg1);
@ -1205,7 +1198,7 @@ static int vortex_adbdma_bufshift(vortex_t * vortex, int adbdma)
//hwwrite(vortex->mmio, VORTEX_ADBDMA_BUFBASE+(((adbdma << 2)+pp) << 2), dma->table[p].addr);
hwwrite(vortex->mmio,
VORTEX_ADBDMA_BUFBASE + (((adbdma << 2) + pp) << 2),
snd_sgbuf_get_addr(dma->sgbuf,
snd_pcm_sgbuf_get_addr(dma->substream,
dma->period_bytes * p));
/* Force write thru cache. */
hwread(vortex->mmio, VORTEX_ADBDMA_BUFBASE +
@ -1244,7 +1237,10 @@ static void vortex_adbdma_resetup(vortex_t *vortex, int adbdma) {
if (pp >= 4)
pp -= 4;
}
hwwrite(vortex->mmio, VORTEX_ADBDMA_BUFBASE+(((adbdma << 2)+pp) << 2), snd_sgbuf_get_addr(dma->sgbuf, dma->period_bytes * p));
hwwrite(vortex->mmio,
VORTEX_ADBDMA_BUFBASE + (((adbdma << 2) + pp) << 2),
snd_pcm_sgbuf_get_addr(dma->substream,
dma->period_bytes * p));
/* Force write thru cache. */
hwread(vortex->mmio, VORTEX_ADBDMA_BUFBASE + (((adbdma << 2)+pp) << 2));
}
@ -1367,13 +1363,12 @@ static void vortex_wtdma_setstartbuffer(vortex_t * vortex, int wtdma, int sb)
static void
vortex_wtdma_setbuffers(vortex_t * vortex, int wtdma,
struct snd_sg_buf * sgbuf, int psize, int count)
int psize, int count)
{
stream_t *dma = &vortex->dma_wt[wtdma];
dma->period_bytes = psize;
dma->nr_periods = count;
dma->sgbuf = sgbuf;
dma->cfg0 = 0;
dma->cfg1 = 0;
@ -1383,23 +1378,23 @@ vortex_wtdma_setbuffers(vortex_t * vortex, int wtdma,
case 4:
dma->cfg1 |= 0x88000000 | 0x44000000 | 0x30000000 | (psize-1);
hwwrite(vortex->mmio, VORTEX_WTDMA_BUFBASE + (wtdma << 4) + 0xc,
snd_sgbuf_get_addr(sgbuf, psize * 3));
snd_pcm_sgbuf_get_addr(dma->substream, psize * 3));
/* 3 pages */
case 3:
dma->cfg0 |= 0x12000000;
dma->cfg1 |= 0x80000000 | 0x40000000 | ((psize-1) << 0xc);
hwwrite(vortex->mmio, VORTEX_WTDMA_BUFBASE + (wtdma << 4) + 0x8,
snd_sgbuf_get_addr(sgbuf, psize * 2));
snd_pcm_sgbuf_get_addr(dma->substream, psize * 2));
/* 2 pages */
case 2:
dma->cfg0 |= 0x88000000 | 0x44000000 | 0x10000000 | (psize-1);
hwwrite(vortex->mmio, VORTEX_WTDMA_BUFBASE + (wtdma << 4) + 0x4,
snd_sgbuf_get_addr(sgbuf, psize));
snd_pcm_sgbuf_get_addr(dma->substream, psize));
/* 1 page */
case 1:
dma->cfg0 |= 0x80000000 | 0x40000000 | ((psize-1) << 0xc);
hwwrite(vortex->mmio, VORTEX_WTDMA_BUFBASE + (wtdma << 4),
snd_sgbuf_get_addr(sgbuf, 0));
snd_pcm_sgbuf_get_addr(dma->substream, 0));
break;
}
hwwrite(vortex->mmio, VORTEX_WTDMA_BUFCFG0 + (wtdma << 3), dma->cfg0);
@ -1465,7 +1460,8 @@ static int vortex_wtdma_bufshift(vortex_t * vortex, int wtdma)
hwwrite(vortex->mmio,
VORTEX_WTDMA_BUFBASE +
(((wtdma << 2) + pp) << 2),
snd_sgbuf_get_addr(dma->sgbuf, dma->period_bytes * p));
snd_pcm_sgbuf_get_addr(dma->substream,
dma->period_bytes * p));
/* Force write thru cache. */
hwread(vortex->mmio, VORTEX_WTDMA_BUFBASE +
(((wtdma << 2) + pp) << 2));

14
sound/pci/au88x0/au88x0_pcm.c
View File

@ -189,7 +189,6 @@ snd_vortex_pcm_hw_params(struct snd_pcm_substream *substream,
{
vortex_t *chip = snd_pcm_substream_chip(substream);
stream_t *stream = (stream_t *) (substream->runtime->private_data);
struct snd_sg_buf *sgbuf;
int err;
// Alloc buffer memory.
@ -199,8 +198,6 @@ snd_vortex_pcm_hw_params(struct snd_pcm_substream *substream,
printk(KERN_ERR "Vortex: pcm page alloc failed!\n");
return err;
}
//sgbuf = (struct snd_sg_buf *) substream->runtime->dma_private;
sgbuf = snd_pcm_substream_sgbuf(substream);
/*
printk(KERN_INFO "Vortex: periods %d, period_bytes %d, channels = %d\n", params_periods(hw_params),
params_period_bytes(hw_params), params_channels(hw_params));
@ -226,7 +223,7 @@ snd_vortex_pcm_hw_params(struct snd_pcm_substream *substream,
stream = substream->runtime->private_data = &chip->dma_adb[dma];
stream->substream = substream;
/* Setup Buffers. */
vortex_adbdma_setbuffers(chip, dma, sgbuf,
vortex_adbdma_setbuffers(chip, dma,
params_period_bytes(hw_params),
params_periods(hw_params));
}
@ -240,7 +237,7 @@ snd_vortex_pcm_hw_params(struct snd_pcm_substream *substream,
&chip->dma_wt[substream->number];
stream->dma = substream->number;
stream->substream = substream;
vortex_wtdma_setbuffers(chip, substream->number, sgbuf,
vortex_wtdma_setbuffers(chip, substream->number,
params_period_bytes(hw_params),
params_periods(hw_params));
}
@ -392,13 +389,6 @@ static snd_pcm_uframes_t snd_vortex_pcm_pointer(struct snd_pcm_substream *substr
return (bytes_to_frames(substream->runtime, current_ptr));
}
/* Page callback. */
/*
static struct page *snd_pcm_sgbuf_ops_page(struct snd_pcm_substream *substream, unsigned long offset) {
}
*/
/* operators */
static struct snd_pcm_ops snd_vortex_playback_ops = {
.open = snd_vortex_pcm_open,

5
sound/pci/bt87x.c
View File

@ -227,7 +227,6 @@ static inline void snd_bt87x_writel(struct snd_bt87x *chip, u32 reg, u32 value)
static int snd_bt87x_create_risc(struct snd_bt87x *chip, struct snd_pcm_substream *substream,
unsigned int periods, unsigned int period_bytes)
{
struct snd_sg_buf *sgbuf = snd_pcm_substream_sgbuf(substream);
unsigned int i, offset;
u32 *risc;
@ -246,6 +245,7 @@ static int snd_bt87x_create_risc(struct snd_bt87x *chip, struct snd_pcm_substrea
rest = period_bytes;
do {
u32 cmd, len;
unsigned int addr;
len = PAGE_SIZE - (offset % PAGE_SIZE);
if (len > rest)
@ -260,7 +260,8 @@ static int snd_bt87x_create_risc(struct snd_bt87x *chip, struct snd_pcm_substrea
if (len == rest)
cmd |= RISC_EOL | RISC_IRQ;
*risc++ = cpu_to_le32(cmd);
*risc++ = cpu_to_le32((u32)snd_pcm_sgbuf_get_addr(sgbuf, offset));
addr = snd_pcm_sgbuf_get_addr(substream, offset);
*risc++ = cpu_to_le32(addr);
offset += len;
rest -= len;
} while (rest > 0);

14
sound/pci/echoaudio/echoaudio.c
View File

@ -490,7 +490,6 @@ static int init_engine(struct snd_pcm_substream *substream,
{
struct echoaudio *chip;
int err, per, rest, page, edge, offs;
struct snd_sg_buf *sgbuf;
struct audiopipe *pipe;
chip = snd_pcm_substream_chip(substream);
@ -531,10 +530,6 @@ static int init_engine(struct snd_pcm_substream *substream,
return err;
}
sgbuf = snd_pcm_substream_sgbuf(substream);
DE_HWP(("pcm_hw_params table size=%d pages=%d\n",
sgbuf->size, sgbuf->pages));
sglist_init(chip, pipe);
edge = PAGE_SIZE;
for (offs = page = per = 0; offs < params_buffer_bytes(hw_params);
@ -543,16 +538,15 @@ static int init_engine(struct snd_pcm_substream *substream,
if (offs + rest > params_buffer_bytes(hw_params))
rest = params_buffer_bytes(hw_params) - offs;
while (rest) {
dma_addr_t addr;
addr = snd_pcm_sgbuf_get_addr(substream, offs);
if (rest <= edge - offs) {
sglist_add_mapping(chip, pipe,
snd_sgbuf_get_addr(sgbuf, offs),
rest);
sglist_add_mapping(chip, pipe, addr, rest);
sglist_add_irq(chip, pipe);
offs += rest;
rest = 0;
} else {
sglist_add_mapping(chip, pipe,
snd_sgbuf_get_addr(sgbuf, offs),
sglist_add_mapping(chip, pipe, addr,
edge - offs);
rest -= edge - offs;
offs = edge;

12
sound/pci/emu10k1/memory.c
View File

@ -296,7 +296,6 @@ struct snd_util_memblk *
snd_emu10k1_alloc_pages(struct snd_emu10k1 *emu, struct snd_pcm_substream *substream)
{
struct snd_pcm_runtime *runtime = substream->runtime;
struct snd_sg_buf *sgbuf = snd_pcm_substream_sgbuf(substream);
struct snd_util_memhdr *hdr;
struct snd_emu10k1_memblk *blk;
int page, err, idx;
@ -321,16 +320,9 @@ snd_emu10k1_alloc_pages(struct snd_emu10k1 *emu, struct snd_pcm_substream *subst
*/
idx = 0;
for (page = blk->first_page; page <= blk->last_page; page++, idx++) {
unsigned long ofs = idx << PAGE_SHIFT;
dma_addr_t addr;
#ifdef CONFIG_SND_DEBUG
if (idx >= sgbuf->pages) {
printk(KERN_ERR "emu: pages overflow! (%d-%d) for %d\n",
blk->first_page, blk->last_page, sgbuf->pages);
mutex_unlock(&hdr->block_mutex);
return NULL;
}
#endif
addr = sgbuf->table[idx].addr;
addr = snd_pcm_sgbuf_get_addr(substream, ofs);
if (! is_valid_page(emu, addr)) {
printk(KERN_ERR "emu: failure page = %d\n", idx);
mutex_unlock(&hdr->block_mutex);

3
sound/pci/hda/hda_intel.c
View File

@ -998,7 +998,6 @@ static int setup_bdle(struct snd_pcm_substream *substream,
struct azx_dev *azx_dev, u32 **bdlp,
int ofs, int size, int with_ioc)
{
struct snd_sg_buf *sgbuf = snd_pcm_substream_sgbuf(substream);
u32 *bdl = *bdlp;
while (size > 0) {
@ -1008,7 +1007,7 @@ static int setup_bdle(struct snd_pcm_substream *substream,
if (azx_dev->frags >= AZX_MAX_BDL_ENTRIES)
return -EINVAL;
addr = snd_pcm_sgbuf_get_addr(sgbuf, ofs);
addr = snd_pcm_sgbuf_get_addr(substream, ofs);
/* program the address field of the BDL entry */
bdl[0] = cpu_to_le32((u32)addr);
bdl[1] = cpu_to_le32(upper_32_bits(addr));

13
sound/pci/riptide/riptide.c
View File

@ -1483,7 +1483,6 @@ static int snd_riptide_prepare(struct snd_pcm_substream *substream)
{
struct snd_riptide *chip = snd_pcm_substream_chip(substream);
struct snd_pcm_runtime *runtime = substream->runtime;
struct snd_sg_buf *sgbuf = snd_pcm_substream_sgbuf(substream);
struct pcmhw *data = get_pcmhwdev(substream);
struct cmdif *cif = chip->cif;
unsigned char *lbuspath = NULL;
@ -1515,9 +1514,9 @@ static int snd_riptide_prepare(struct snd_pcm_substream *substream)
lbuspath = data->paths.stereo;
break;
}
snd_printdd("use sgdlist at 0x%p and buffer at 0x%p\n",
data->sgdlist.area, sgbuf);
if (data->sgdlist.area && sgbuf) {
snd_printdd("use sgdlist at 0x%p\n",
data->sgdlist.area);
if (data->sgdlist.area) {
unsigned int i, j, size, pages, f, pt, period;
struct sgd *c, *p = NULL;
@ -1535,6 +1534,7 @@ static int snd_riptide_prepare(struct snd_pcm_substream *substream)
pt = 0;
j = 0;
for (i = 0; i < pages; i++) {
unsigned int ofs, addr;
c = &data->sgdbuf[i];
if (p)
p->dwNextLink = cpu_to_le32(data->sgdlist.addr +
@ -1542,8 +1542,9 @@ static int snd_riptide_prepare(struct snd_pcm_substream *substream)
sizeof(struct
sgd)));
c->dwNextLink = cpu_to_le32(data->sgdlist.addr);
c->dwSegPtrPhys =
cpu_to_le32(sgbuf->table[j].addr + pt);
ofs = j << PAGE_SHIFT;
addr = snd_pcm_sgbuf_get_addr(substream, ofs) + pt;
c->dwSegPtrPhys = cpu_to_le32(addr);
pt = (pt + f) % PAGE_SIZE;
if (pt == 0)
j++;

18
sound/pci/rme9652/hdspm.c
View File

@ -535,7 +535,8 @@ static inline void snd_hdspm_initialize_midi_flush(struct hdspm * hdspm);
static int hdspm_update_simple_mixer_controls(struct hdspm * hdspm);
static int hdspm_autosync_ref(struct hdspm * hdspm);
static int snd_hdspm_set_defaults(struct hdspm * hdspm);
static void hdspm_set_sgbuf(struct hdspm * hdspm, struct snd_sg_buf *sgbuf,
static void hdspm_set_sgbuf(struct hdspm * hdspm,
struct snd_pcm_substream *substream,
unsigned int reg, int channels);
static inline int HDSPM_bit2freq(int n)
@ -3604,8 +3605,6 @@ static int snd_hdspm_hw_params(struct snd_pcm_substream *substream,
int i;
pid_t this_pid;
pid_t other_pid;
struct snd_sg_buf *sgbuf;
spin_lock_irq(&hdspm->lock);
@ -3673,11 +3672,9 @@ static int snd_hdspm_hw_params(struct snd_pcm_substream *substream,
if (err < 0)
return err;
sgbuf = snd_pcm_substream_sgbuf(substream);
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
hdspm_set_sgbuf(hdspm, sgbuf, HDSPM_pageAddressBufferOut,
hdspm_set_sgbuf(hdspm, substream, HDSPM_pageAddressBufferOut,
params_channels(params));
for (i = 0; i < params_channels(params); ++i)
@ -3688,7 +3685,7 @@ static int snd_hdspm_hw_params(struct snd_pcm_substream *substream,
snd_printdd("Allocated sample buffer for playback at %p\n",
hdspm->playback_buffer);
} else {
hdspm_set_sgbuf(hdspm, sgbuf, HDSPM_pageAddressBufferIn,
hdspm_set_sgbuf(hdspm, substream, HDSPM_pageAddressBufferIn,
params_channels(params));
for (i = 0; i < params_channels(params); ++i)
@ -3703,7 +3700,7 @@ static int snd_hdspm_hw_params(struct snd_pcm_substream *substream,
snd_printdd("Allocated sample buffer for %s at 0x%08X\n",
substream->stream == SNDRV_PCM_STREAM_PLAYBACK ?
"playback" : "capture",
snd_pcm_sgbuf_get_addr(sgbuf, 0));
snd_pcm_sgbuf_get_addr(substream, 0));
*/
/*
snd_printdd("set_hwparams: %s %d Hz, %d channels, bs = %d\n",
@ -4253,13 +4250,14 @@ static int __devinit snd_hdspm_preallocate_memory(struct hdspm * hdspm)
return 0;
}
static void hdspm_set_sgbuf(struct hdspm * hdspm, struct snd_sg_buf *sgbuf,
static void hdspm_set_sgbuf(struct hdspm * hdspm,
struct snd_pcm_substream *substream,
unsigned int reg, int channels)
{
int i;
for (i = 0; i < (channels * 16); i++)
hdspm_write(hdspm, reg + 4 * i,
snd_pcm_sgbuf_get_addr(sgbuf, (size_t) 4096 * i));
snd_pcm_sgbuf_get_addr(substream, 4096 * i));
}
/* ------------- ALSA Devices ---------------------------- */

13
sound/pci/trident/trident_memory.c
View File

@ -194,7 +194,6 @@ snd_trident_alloc_sg_pages(struct snd_trident *trident,
struct snd_util_memblk *blk;
struct snd_pcm_runtime *runtime = substream->runtime;
int idx, page;
struct snd_sg_buf *sgbuf = snd_pcm_substream_sgbuf(substream);
if (snd_BUG_ON(runtime->dma_bytes <= 0 ||
runtime->dma_bytes > SNDRV_TRIDENT_MAX_PAGES *
@ -212,18 +211,14 @@ snd_trident_alloc_sg_pages(struct snd_trident *trident,
mutex_unlock(&hdr->block_mutex);
return NULL;
}
if (lastpg(blk) - firstpg(blk) >= sgbuf->pages) {
snd_printk(KERN_ERR "page calculation doesn't match: allocated pages = %d, trident = %d/%d\n", sgbuf->pages, firstpg(blk), lastpg(blk));
__snd_util_mem_free(hdr, blk);
mutex_unlock(&hdr->block_mutex);
return NULL;
}
/* set TLB entries */
idx = 0;
for (page = firstpg(blk); page <= lastpg(blk); page++, idx++) {
dma_addr_t addr = sgbuf->table[idx].addr;
unsigned long ptr = (unsigned long)sgbuf->table[idx].buf;
unsigned long ofs = idx << PAGE_SHIFT;
dma_addr_t addr = snd_pcm_sgbuf_get_addr(substream, ofs);
unsigned long ptr = (unsigned long)
snd_pcm_sgbuf_get_ptr(substream, ofs);
if (! is_valid_page(addr)) {
__snd_util_mem_free(hdr, blk);
mutex_unlock(&hdr->block_mutex);

5
sound/pci/via82xx.c
View File

@ -420,7 +420,6 @@ static int build_via_table(struct viadev *dev, struct snd_pcm_substream *substre
{
unsigned int i, idx, ofs, rest;
struct via82xx *chip = snd_pcm_substream_chip(substream);
struct snd_sg_buf *sgbuf = snd_pcm_substream_sgbuf(substream);
if (dev->table.area == NULL) {
/* the start of each lists must be aligned to 8 bytes,
@ -449,12 +448,14 @@ static int build_via_table(struct viadev *dev, struct snd_pcm_substream *substre
do {
unsigned int r;
unsigned int flag;
unsigned int addr;
if (idx >= VIA_TABLE_SIZE) {
snd_printk(KERN_ERR "via82xx: too much table size!\n");
return -EINVAL;
}
((u32 *)dev->table.area)[idx << 1] = cpu_to_le32((u32)snd_pcm_sgbuf_get_addr(sgbuf, ofs));
addr = snd_pcm_sgbuf_get_addr(substream, ofs);
((u32 *)dev->table.area)[idx << 1] = cpu_to_le32(addr);
r = PAGE_SIZE - (ofs % PAGE_SIZE);
if (rest < r)
r = rest;

5
sound/pci/via82xx_modem.c
View File

@ -281,7 +281,6 @@ static int build_via_table(struct viadev *dev, struct snd_pcm_substream *substre
{
unsigned int i, idx, ofs, rest;
struct via82xx_modem *chip = snd_pcm_substream_chip(substream);
struct snd_sg_buf *sgbuf = snd_pcm_substream_sgbuf(substream);
if (dev->table.area == NULL) {
/* the start of each lists must be aligned to 8 bytes,
@ -310,12 +309,14 @@ static int build_via_table(struct viadev *dev, struct snd_pcm_substream *substre
do {
unsigned int r;
unsigned int flag;
unsigned int addr;
if (idx >= VIA_TABLE_SIZE) {
snd_printk(KERN_ERR "via82xx: too much table size!\n");
return -EINVAL;
}
((u32 *)dev->table.area)[idx << 1] = cpu_to_le32((u32)snd_pcm_sgbuf_get_addr(sgbuf, ofs));
addr = snd_pcm_sgbuf_get_addr(substream, ofs);
((u32 *)dev->table.area)[idx << 1] = cpu_to_le32(addr);
r = PAGE_SIZE - (ofs % PAGE_SIZE);
if (rest < r)
r = rest;