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Commit bd6fe9e1 authored by Linus Torvalds's avatar Linus Torvalds
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Merge master.kernel.org:/home/rmk/linux-2.6-mmc

parents 862aad56 210ce2a7
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Showing with 229 additions and 235 deletions
drivers/mmc/wbsd.c
View file @ bd6fe9e1
......@@ -93,7 +93,7 @@ static int dma = 2;
static inline void wbsd_unlock_config(struct wbsd_host* host)
{
BUG_ON(host->config == 0);
outb(host->unlock_code, host->config);
outb(host->unlock_code, host->config);
}
......@@ -101,14 +101,14 @@ static inline void wbsd_unlock_config(struct wbsd_host* host)
static inline void wbsd_lock_config(struct wbsd_host* host)
{
BUG_ON(host->config == 0);
outb(LOCK_CODE, host->config);
}
static inline void wbsd_write_config(struct wbsd_host* host, u8 reg, u8 value)
{
BUG_ON(host->config == 0);
outb(reg, host->config);
outb(value, host->config + 1);
}
......@@ -116,7 +116,7 @@ static inline void wbsd_write_config(struct wbsd_host* host, u8 reg, u8 value)
static inline u8 wbsd_read_config(struct wbsd_host* host, u8 reg)
{
BUG_ON(host->config == 0);
outb(reg, host->config);
return inb(host->config + 1);
}
......@@ -140,21 +140,21 @@ static inline u8 wbsd_read_index(struct wbsd_host* host, u8 index)
static void wbsd_init_device(struct wbsd_host* host)
{
u8 setup, ier;
/*
* Reset chip (SD/MMC part) and fifo.
*/
setup = wbsd_read_index(host, WBSD_IDX_SETUP);
setup |= WBSD_FIFO_RESET | WBSD_SOFT_RESET;
wbsd_write_index(host, WBSD_IDX_SETUP, setup);
/*
* Set DAT3 to input
*/
setup &= ~WBSD_DAT3_H;
wbsd_write_index(host, WBSD_IDX_SETUP, setup);
host->flags &= ~WBSD_FIGNORE_DETECT;
/*
* Read back default clock.
*/
......@@ -164,12 +164,12 @@ static void wbsd_init_device(struct wbsd_host* host)
* Power down port.
*/
outb(WBSD_POWER_N, host->base + WBSD_CSR);
/*
* Set maximum timeout.
*/
wbsd_write_index(host, WBSD_IDX_TAAC, 0x7F);
/*
* Test for card presence
*/
......@@ -177,7 +177,7 @@ static void wbsd_init_device(struct wbsd_host* host)
host->flags |= WBSD_FCARD_PRESENT;
else
host->flags &= ~WBSD_FCARD_PRESENT;
/*
* Enable interesting interrupts.
*/
......@@ -200,9 +200,9 @@ static void wbsd_init_device(struct wbsd_host* host)
static void wbsd_reset(struct wbsd_host* host)
{
u8 setup;
printk(KERN_ERR DRIVER_NAME ": Resetting chip\n");
/*
* Soft reset of chip (SD/MMC part).
*/
......@@ -214,9 +214,9 @@ static void wbsd_reset(struct wbsd_host* host)
static void wbsd_request_end(struct wbsd_host* host, struct mmc_request* mrq)
{
unsigned long dmaflags;
DBGF("Ending request, cmd (%x)\n", mrq->cmd->opcode);
if (host->dma >= 0)
{
/*
......@@ -232,7 +232,7 @@ static void wbsd_request_end(struct wbsd_host* host, struct mmc_request* mrq)
*/
wbsd_write_index(host, WBSD_IDX_DMA, 0);
}
host->mrq = NULL;
/*
......@@ -275,7 +275,7 @@ static inline int wbsd_next_sg(struct wbsd_host* host)
host->offset = 0;
host->remain = host->cur_sg->length;
}
return host->num_sg;
}
......@@ -297,12 +297,12 @@ static inline void wbsd_sg_to_dma(struct wbsd_host* host, struct mmc_data* data)
struct scatterlist* sg;
char* dmabuf = host->dma_buffer;
char* sgbuf;
size = host->size;
sg = data->sg;
len = data->sg_len;
/*
* Just loop through all entries. Size might not
* be the entire list though so make sure that
......@@ -317,23 +317,23 @@ static inline void wbsd_sg_to_dma(struct wbsd_host* host, struct mmc_data* data)
memcpy(dmabuf, sgbuf, sg[i].length);
kunmap_atomic(sgbuf, KM_BIO_SRC_IRQ);
dmabuf += sg[i].length;
if (size < sg[i].length)
size = 0;
else
size -= sg[i].length;
if (size == 0)
break;
}
/*
* Check that we didn't get a request to transfer
* more data than can fit into the SG list.
*/
BUG_ON(size != 0);
host->size -= size;
}
......@@ -343,12 +343,12 @@ static inline void wbsd_dma_to_sg(struct wbsd_host* host, struct mmc_data* data)
struct scatterlist* sg;
char* dmabuf = host->dma_buffer;
char* sgbuf;
size = host->size;
sg = data->sg;
len = data->sg_len;
/*
* Just loop through all entries. Size might not
* be the entire list though so make sure that
......@@ -363,30 +363,30 @@ static inline void wbsd_dma_to_sg(struct wbsd_host* host, struct mmc_data* data)
memcpy(sgbuf, dmabuf, sg[i].length);
kunmap_atomic(sgbuf, KM_BIO_SRC_IRQ);
dmabuf += sg[i].length;
if (size < sg[i].length)
size = 0;
else
size -= sg[i].length;
if (size == 0)
break;
}
/*
* Check that we didn't get a request to transfer
* more data than can fit into the SG list.
*/
BUG_ON(size != 0);
host->size -= size;
}
/*
* Command handling
*/
static inline void wbsd_get_short_reply(struct wbsd_host* host,
struct mmc_command* cmd)
{
......@@ -398,7 +398,7 @@ static inline void wbsd_get_short_reply(struct wbsd_host* host,
cmd->error = MMC_ERR_INVALID;
return;
}
cmd->resp[0] =
wbsd_read_index(host, WBSD_IDX_RESP12) << 24;
cmd->resp[0] |=
......@@ -415,7 +415,7 @@ static inline void wbsd_get_long_reply(struct wbsd_host* host,
struct mmc_command* cmd)
{
int i;
/*
* Correct response type?
*/
......@@ -424,7 +424,7 @@ static inline void wbsd_get_long_reply(struct wbsd_host* host,
cmd->error = MMC_ERR_INVALID;
return;
}
for (i = 0;i < 4;i++)
{
cmd->resp[i] =
......@@ -442,7 +442,7 @@ static void wbsd_send_command(struct wbsd_host* host, struct mmc_command* cmd)
{
int i;
u8 status, isr;
DBGF("Sending cmd (%x)\n", cmd->opcode);
/*
......@@ -451,16 +451,16 @@ static void wbsd_send_command(struct wbsd_host* host, struct mmc_command* cmd)
* transfer.
*/
host->isr = 0;
/*
* Send the command (CRC calculated by host).
*/
outb(cmd->opcode, host->base + WBSD_CMDR);
for (i = 3;i >= 0;i--)
outb((cmd->arg >> (i * 8)) & 0xff, host->base + WBSD_CMDR);
cmd->error = MMC_ERR_NONE;
/*
* Wait for the request to complete.
*/
......@@ -477,7 +477,7 @@ static void wbsd_send_command(struct wbsd_host* host, struct mmc_command* cmd)
* Read back status.
*/
isr = host->isr;
/* Card removed? */
if (isr & WBSD_INT_CARD)
cmd->error = MMC_ERR_TIMEOUT;
......@@ -509,13 +509,13 @@ static void wbsd_empty_fifo(struct wbsd_host* host)
struct mmc_data* data = host->mrq->cmd->data;
char* buffer;
int i, fsr, fifo;
/*
* Handle excessive data.
*/
if (data->bytes_xfered == host->size)
return;
buffer = wbsd_kmap_sg(host) + host->offset;
/*
......@@ -527,14 +527,14 @@ static void wbsd_empty_fifo(struct wbsd_host* host)
/*
* The size field in the FSR is broken so we have to
* do some guessing.
*/
*/
if (fsr & WBSD_FIFO_FULL)
fifo = 16;
else if (fsr & WBSD_FIFO_FUTHRE)
fifo = 8;
else
fifo = 1;
for (i = 0;i < fifo;i++)
{
*buffer = inb(host->base + WBSD_DFR);
......@@ -543,23 +543,23 @@ static void wbsd_empty_fifo(struct wbsd_host* host)
host->remain--;
data->bytes_xfered++;
/*
* Transfer done?
*/
if (data->bytes_xfered == host->size)
{
wbsd_kunmap_sg(host);
wbsd_kunmap_sg(host);
return;
}
/*
* End of scatter list entry?
*/
if (host->remain == 0)
{
wbsd_kunmap_sg(host);
/*
* Get next entry. Check if last.
*/
......@@ -572,17 +572,17 @@ static void wbsd_empty_fifo(struct wbsd_host* host)
* into the scatter list.
*/
BUG_ON(1);
host->size = data->bytes_xfered;
return;
}
buffer = wbsd_kmap_sg(host);
}
}
}
wbsd_kunmap_sg(host);
/*
......@@ -599,7 +599,7 @@ static void wbsd_fill_fifo(struct wbsd_host* host)
struct mmc_data* data = host->mrq->cmd->data;
char* buffer;
int i, fsr, fifo;
/*
* Check that we aren't being called after the
* entire buffer has been transfered.
......@@ -618,7 +618,7 @@ static void wbsd_fill_fifo(struct wbsd_host* host)
/*
* The size field in the FSR is broken so we have to
* do some guessing.
*/
*/
if (fsr & WBSD_FIFO_EMPTY)
fifo = 0;
else if (fsr & WBSD_FIFO_EMTHRE)
......@@ -632,9 +632,9 @@ static void wbsd_fill_fifo(struct wbsd_host* host)
buffer++;
host->offset++;
host->remain--;
data->bytes_xfered++;
/*
* Transfer done?
*/
......@@ -650,7 +650,7 @@ static void wbsd_fill_fifo(struct wbsd_host* host)
if (host->remain == 0)
{
wbsd_kunmap_sg(host);
/*
* Get next entry. Check if last.
*/
......@@ -663,19 +663,19 @@ static void wbsd_fill_fifo(struct wbsd_host* host)
* into the scatter list.
*/
BUG_ON(1);
host->size = data->bytes_xfered;
return;
}
buffer = wbsd_kmap_sg(host);
}
}
}
wbsd_kunmap_sg(host);
/*
* The controller stops sending interrupts for
* 'FIFO empty' under certain conditions. So we
......@@ -694,7 +694,7 @@ static void wbsd_prepare_data(struct wbsd_host* host, struct mmc_data* data)
1 << data->blksz_bits, data->blocks, data->flags);
DBGF("tsac %d ms nsac %d clk\n",
data->timeout_ns / 1000000, data->timeout_clks);
/*
* Calculate size.
*/
......@@ -708,12 +708,12 @@ static void wbsd_prepare_data(struct wbsd_host* host, struct mmc_data* data)
wbsd_write_index(host, WBSD_IDX_TAAC, 127);
else
wbsd_write_index(host, WBSD_IDX_TAAC, data->timeout_ns/1000000);
if (data->timeout_clks > 255)
wbsd_write_index(host, WBSD_IDX_NSAC, 255);
else
wbsd_write_index(host, WBSD_IDX_NSAC, data->timeout_clks);
/*
* Inform the chip of how large blocks will be
* sent. It needs this to determine when to
......@@ -732,7 +732,7 @@ static void wbsd_prepare_data(struct wbsd_host* host, struct mmc_data* data)
else if (host->bus_width == MMC_BUS_WIDTH_4)
{
blksize = (1 << data->blksz_bits) + 2 * 4;
wbsd_write_index(host, WBSD_IDX_PBSMSB, ((blksize >> 4) & 0xF0)
| WBSD_DATA_WIDTH);
wbsd_write_index(host, WBSD_IDX_PBSLSB, blksize & 0xFF);
......@@ -751,12 +751,12 @@ static void wbsd_prepare_data(struct wbsd_host* host, struct mmc_data* data)
setup = wbsd_read_index(host, WBSD_IDX_SETUP);
setup |= WBSD_FIFO_RESET;
wbsd_write_index(host, WBSD_IDX_SETUP, setup);
/*
* DMA transfer?
*/
if (host->dma >= 0)
{
{
/*
* The buffer for DMA is only 64 kB.
*/
......@@ -766,17 +766,17 @@ static void wbsd_prepare_data(struct wbsd_host* host, struct mmc_data* data)
data->error = MMC_ERR_INVALID;
return;
}
/*
* Transfer data from the SG list to
* the DMA buffer.
*/
if (data->flags & MMC_DATA_WRITE)
wbsd_sg_to_dma(host, data);
/*
* Initialise the ISA DMA controller.
*/
*/
dmaflags = claim_dma_lock();
disable_dma(host->dma);
clear_dma_ff(host->dma);
......@@ -802,17 +802,17 @@ static void wbsd_prepare_data(struct wbsd_host* host, struct mmc_data* data)
* output to a minimum.
*/
host->firsterr = 1;
/*
* Initialise the SG list.
*/
wbsd_init_sg(host, data);
/*
* Turn off DMA.
*/
wbsd_write_index(host, WBSD_IDX_DMA, 0);
/*
* Set up FIFO threshold levels (and fill
* buffer if doing a write).
......@@ -828,8 +828,8 @@ static void wbsd_prepare_data(struct wbsd_host* host, struct mmc_data* data)
WBSD_FIFOEN_EMPTY | 8);
wbsd_fill_fifo(host);
}
}
}
data->error = MMC_ERR_NONE;
}
......@@ -838,7 +838,7 @@ static void wbsd_finish_data(struct wbsd_host* host, struct mmc_data* data)
unsigned long dmaflags;
int count;
u8 status;
WARN_ON(host->mrq == NULL);
/*
......@@ -855,7 +855,7 @@ static void wbsd_finish_data(struct wbsd_host* host, struct mmc_data* data)
{
status = wbsd_read_index(host, WBSD_IDX_STATUS);
} while (status & (WBSD_BLOCK_READ | WBSD_BLOCK_WRITE));
/*
* DMA transfer?
*/
......@@ -865,7 +865,7 @@ static void wbsd_finish_data(struct wbsd_host* host, struct mmc_data* data)
* Disable DMA on the host.
*/
wbsd_write_index(host, WBSD_IDX_DMA, 0);
/*
* Turn of ISA DMA controller.
*/
......@@ -874,7 +874,7 @@ static void wbsd_finish_data(struct wbsd_host* host, struct mmc_data* data)
clear_dma_ff(host->dma);
count = get_dma_residue(host->dma);
release_dma_lock(dmaflags);
/*
* Any leftover data?
*/
......@@ -882,7 +882,7 @@ static void wbsd_finish_data(struct wbsd_host* host, struct mmc_data* data)
{
printk(KERN_ERR DRIVER_NAME ": Incomplete DMA "
"transfer. %d bytes left.\n", count);
data->error = MMC_ERR_FAILED;
}
else
......@@ -893,13 +893,13 @@ static void wbsd_finish_data(struct wbsd_host* host, struct mmc_data* data)
*/
if (data->flags & MMC_DATA_READ)
wbsd_dma_to_sg(host, data);
data->bytes_xfered = host->size;
}
}
DBGF("Ending data transfer (%d bytes)\n", data->bytes_xfered);
wbsd_request_end(host, host->mrq);
}
......@@ -924,7 +924,7 @@ static void wbsd_request(struct mmc_host* mmc, struct mmc_request* mrq)
cmd = mrq->cmd;
host->mrq = mrq;
/*
* If there is no card in the slot then
* timeout immediatly.
......@@ -941,18 +941,18 @@ static void wbsd_request(struct mmc_host* mmc, struct mmc_request* mrq)
if (cmd->data)
{
wbsd_prepare_data(host, cmd->data);
if (cmd->data->error != MMC_ERR_NONE)
goto done;
}
wbsd_send_command(host, cmd);
/*
* If this is a data transfer the request
* will be finished after the data has
* transfered.
*/
*/
if (cmd->data && (cmd->error == MMC_ERR_NONE))
{
/*
......@@ -965,7 +965,7 @@ static void wbsd_request(struct mmc_host* mmc, struct mmc_request* mrq)
return;
}
done:
wbsd_request_end(host, mrq);
......@@ -976,7 +976,7 @@ static void wbsd_set_ios(struct mmc_host* mmc, struct mmc_ios* ios)
{
struct wbsd_host* host = mmc_priv(mmc);
u8 clk, setup, pwr;
DBGF("clock %uHz busmode %u powermode %u cs %u Vdd %u width %u\n",
ios->clock, ios->bus_mode, ios->power_mode, ios->chip_select,
ios->vdd, ios->bus_width);
......@@ -989,7 +989,7 @@ static void wbsd_set_ios(struct mmc_host* mmc, struct mmc_ios* ios)
*/
if (ios->power_mode == MMC_POWER_OFF)
wbsd_init_device(host);
if (ios->clock >= 24000000)
clk = WBSD_CLK_24M;
else if (ios->clock >= 16000000)
......@@ -1042,7 +1042,7 @@ static void wbsd_set_ios(struct mmc_host* mmc, struct mmc_ios* ios)
mod_timer(&host->ignore_timer, jiffies + HZ/100);
}
wbsd_write_index(host, WBSD_IDX_SETUP, setup);
/*
* Store bus width for later. Will be used when
* setting up the data transfer.
......@@ -1128,7 +1128,7 @@ static inline struct mmc_data* wbsd_get_data(struct wbsd_host* host)
WARN_ON(!host->mrq->cmd->data);
if (!host->mrq->cmd->data)
return NULL;
return host->mrq->cmd->data;
}
......@@ -1136,72 +1136,67 @@ static void wbsd_tasklet_card(unsigned long param)
{
struct wbsd_host* host = (struct wbsd_host*)param;
u8 csr;
int delay = -1;
spin_lock(&host->lock);
if (host->flags & WBSD_FIGNORE_DETECT)
{
spin_unlock(&host->lock);
return;
}
csr = inb(host->base + WBSD_CSR);
WARN_ON(csr == 0xff);
if (csr & WBSD_CARDPRESENT)
{
if (!(host->flags & WBSD_FCARD_PRESENT))
{
DBG("Card inserted\n");
host->flags |= WBSD_FCARD_PRESENT;
spin_unlock(&host->lock);
/*
* Delay card detection to allow electrical connections
* to stabilise.
*/
mmc_detect_change(host->mmc, msecs_to_jiffies(500));
delay = 500;
}
else
spin_unlock(&host->lock);
}
else if (host->flags & WBSD_FCARD_PRESENT)
{
DBG("Card removed\n");
host->flags &= ~WBSD_FCARD_PRESENT;
if (host->mrq)
{
printk(KERN_ERR DRIVER_NAME
": Card removed during transfer!\n");
wbsd_reset(host);
host->mrq->cmd->error = MMC_ERR_FAILED;
tasklet_schedule(&host->finish_tasklet);
}
/*
* Unlock first since we might get a call back.
*/
spin_unlock(&host->lock);
mmc_detect_change(host->mmc, 0);
delay = 0;
}
else
spin_unlock(&host->lock);
/*
* Unlock first since we might get a call back.
*/
spin_unlock(&host->lock);
if (delay != -1)
mmc_detect_change(host->mmc, msecs_to_jiffies(delay));
}
static void wbsd_tasklet_fifo(unsigned long param)
{
struct wbsd_host* host = (struct wbsd_host*)param;
struct mmc_data* data;
spin_lock(&host->lock);
if (!host->mrq)
goto end;
data = wbsd_get_data(host);
if (!data)
goto end;
......@@ -1220,7 +1215,7 @@ static void wbsd_tasklet_fifo(unsigned long param)
tasklet_schedule(&host->finish_tasklet);
}
end:
end:
spin_unlock(&host->lock);
}
......@@ -1228,23 +1223,23 @@ static void wbsd_tasklet_crc(unsigned long param)
{
struct wbsd_host* host = (struct wbsd_host*)param;
struct mmc_data* data;
spin_lock(&host->lock);
if (!host->mrq)
goto end;
data = wbsd_get_data(host);
if (!data)
goto end;
DBGF("CRC error\n");
data->error = MMC_ERR_BADCRC;
tasklet_schedule(&host->finish_tasklet);
end:
end:
spin_unlock(&host->lock);
}
......@@ -1252,23 +1247,23 @@ static void wbsd_tasklet_timeout(unsigned long param)
{
struct wbsd_host* host = (struct wbsd_host*)param;
struct mmc_data* data;
spin_lock(&host->lock);
if (!host->mrq)
goto end;
data = wbsd_get_data(host);
if (!data)
goto end;
DBGF("Timeout\n");
data->error = MMC_ERR_TIMEOUT;
tasklet_schedule(&host->finish_tasklet);
end:
end:
spin_unlock(&host->lock);
}
......@@ -1276,20 +1271,20 @@ static void wbsd_tasklet_finish(unsigned long param)
{
struct wbsd_host* host = (struct wbsd_host*)param;
struct mmc_data* data;
spin_lock(&host->lock);
WARN_ON(!host->mrq);
if (!host->mrq)
goto end;
data = wbsd_get_data(host);
if (!data)
goto end;
wbsd_finish_data(host, data);
end:
end:
spin_unlock(&host->lock);
}
......@@ -1297,7 +1292,7 @@ static void wbsd_tasklet_block(unsigned long param)
{
struct wbsd_host* host = (struct wbsd_host*)param;
struct mmc_data* data;
spin_lock(&host->lock);
if ((wbsd_read_index(host, WBSD_IDX_CRCSTATUS) & WBSD_CRC_MASK) !=
......@@ -1306,15 +1301,15 @@ static void wbsd_tasklet_block(unsigned long param)
data = wbsd_get_data(host);
if (!data)
goto end;
DBGF("CRC error\n");
data->error = MMC_ERR_BADCRC;
tasklet_schedule(&host->finish_tasklet);
}
end:
end:
spin_unlock(&host->lock);
}
......@@ -1326,7 +1321,7 @@ static irqreturn_t wbsd_irq(int irq, void *dev_id, struct pt_regs *regs)
{
struct wbsd_host* host = dev_id;
int isr;
isr = inb(host->base + WBSD_ISR);
/*
......@@ -1334,7 +1329,7 @@ static irqreturn_t wbsd_irq(int irq, void *dev_id, struct pt_regs *regs)
*/
if (isr == 0xff || isr == 0x00)
return IRQ_NONE;
host->isr |= isr;
/*
......@@ -1352,7 +1347,7 @@ static irqreturn_t wbsd_irq(int irq, void *dev_id, struct pt_regs *regs)
tasklet_hi_schedule(&host->block_tasklet);
if (isr & WBSD_INT_TC)
tasklet_schedule(&host->finish_tasklet);
return IRQ_HANDLED;
}
......@@ -1370,14 +1365,14 @@ static int __devinit wbsd_alloc_mmc(struct device* dev)
{
struct mmc_host* mmc;
struct wbsd_host* host;
/*
* Allocate MMC structure.
*/
mmc = mmc_alloc_host(sizeof(struct wbsd_host), dev);
if (!mmc)
return -ENOMEM;
host = mmc_priv(mmc);
host->mmc = mmc;
......@@ -1391,37 +1386,37 @@ static int __devinit wbsd_alloc_mmc(struct device* dev)
mmc->f_max = 24000000;
mmc->ocr_avail = MMC_VDD_32_33|MMC_VDD_33_34;
mmc->caps = MMC_CAP_4_BIT_DATA;
spin_lock_init(&host->lock);
/*
* Set up timers
*/
init_timer(&host->ignore_timer);
host->ignore_timer.data = (unsigned long)host;
host->ignore_timer.function = wbsd_reset_ignore;
/*
* Maximum number of segments. Worst case is one sector per segment
* so this will be 64kB/512.
*/
mmc->max_hw_segs = 128;
mmc->max_phys_segs = 128;
/*
* Maximum number of sectors in one transfer. Also limited by 64kB
* buffer.
*/
mmc->max_sectors = 128;
/*
* Maximum segment size. Could be one segment with the maximum number
* of segments.
*/
mmc->max_seg_size = mmc->max_sectors * 512;
dev_set_drvdata(dev, mmc);
return 0;
}
......@@ -1429,18 +1424,18 @@ static void __devexit wbsd_free_mmc(struct device* dev)
{
struct mmc_host* mmc;
struct wbsd_host* host;
mmc = dev_get_drvdata(dev);
if (!mmc)
return;
host = mmc_priv(mmc);
BUG_ON(host == NULL);
del_timer_sync(&host->ignore_timer);
mmc_free_host(mmc);
dev_set_drvdata(dev, NULL);
}
......@@ -1452,7 +1447,7 @@ static int __devinit wbsd_scan(struct wbsd_host* host)
{
int i, j, k;
int id;
/*
* Iterate through all ports, all codes to
* find hardware that is in our known list.
......@@ -1461,32 +1456,32 @@ static int __devinit wbsd_scan(struct wbsd_host* host)
{
if (!request_region(config_ports[i], 2, DRIVER_NAME))
continue;
for (j = 0;j < sizeof(unlock_codes)/sizeof(int);j++)
{
id = 0xFFFF;
outb(unlock_codes[j], config_ports[i]);
outb(unlock_codes[j], config_ports[i]);
outb(WBSD_CONF_ID_HI, config_ports[i]);
id = inb(config_ports[i] + 1) << 8;
outb(WBSD_CONF_ID_LO, config_ports[i]);
id |= inb(config_ports[i] + 1);
for (k = 0;k < sizeof(valid_ids)/sizeof(int);k++)
{
if (id == valid_ids[k])
{
{
host->chip_id = id;
host->config = config_ports[i];
host->unlock_code = unlock_codes[i];
return 0;
}
}
if (id != 0xFFFF)
{
DBG("Unknown hardware (id %x) found at %x\n",
......@@ -1495,10 +1490,10 @@ static int __devinit wbsd_scan(struct wbsd_host* host)
outb(LOCK_CODE, config_ports[i]);
}
release_region(config_ports[i], 2);
}
return -ENODEV;
}
......@@ -1510,12 +1505,12 @@ static int __devinit wbsd_request_region(struct wbsd_host* host, int base)
{
if (io & 0x7)
return -EINVAL;
if (!request_region(base, 8, DRIVER_NAME))
return -EIO;
host->base = io;
return 0;
}
......@@ -1523,12 +1518,12 @@ static void __devexit wbsd_release_regions(struct wbsd_host* host)
{
if (host->base)
release_region(host->base, 8);
host->base = 0;
if (host->config)
release_region(host->config, 2);
host->config = 0;
}
......@@ -1540,10 +1535,10 @@ static void __devinit wbsd_request_dma(struct wbsd_host* host, int dma)
{
if (dma < 0)
return;
if (request_dma(dma, DRIVER_NAME))
goto err;
/*
* We need to allocate a special buffer in
* order for ISA to be able to DMA to it.
......@@ -1558,7 +1553,7 @@ static void __devinit wbsd_request_dma(struct wbsd_host* host, int dma)
*/
host->dma_addr = dma_map_single(host->mmc->dev, host->dma_buffer,
WBSD_DMA_SIZE, DMA_BIDIRECTIONAL);
/*
* ISA DMA must be aligned on a 64k basis.
*/
......@@ -1571,19 +1566,19 @@ static void __devinit wbsd_request_dma(struct wbsd_host* host, int dma)
goto kfree;
host->dma = dma;
return;
kfree:
/*
* If we've gotten here then there is some kind of alignment bug
*/
BUG_ON(1);
dma_unmap_single(host->mmc->dev, host->dma_addr, WBSD_DMA_SIZE,
DMA_BIDIRECTIONAL);
host->dma_addr = (dma_addr_t)NULL;
kfree(host->dma_buffer);
host->dma_buffer = NULL;
......@@ -1604,7 +1599,7 @@ static void __devexit wbsd_release_dma(struct wbsd_host* host)
kfree(host->dma_buffer);
if (host->dma >= 0)
free_dma(host->dma);
host->dma = -1;
host->dma_buffer = NULL;
host->dma_addr = (dma_addr_t)NULL;
......@@ -1617,7 +1612,7 @@ static void __devexit wbsd_release_dma(struct wbsd_host* host)
static int __devinit wbsd_request_irq(struct wbsd_host* host, int irq)
{
int ret;
/*
* Allocate interrupt.
*/
......@@ -1625,7 +1620,7 @@ static int __devinit wbsd_request_irq(struct wbsd_host* host, int irq)
ret = request_irq(irq, wbsd_irq, SA_SHIRQ, DRIVER_NAME, host);
if (ret)
return ret;
host->irq = irq;
/*
......@@ -1637,7 +1632,7 @@ static int __devinit wbsd_request_irq(struct wbsd_host* host, int irq)
tasklet_init(&host->timeout_tasklet, wbsd_tasklet_timeout, (unsigned long)host);
tasklet_init(&host->finish_tasklet, wbsd_tasklet_finish, (unsigned long)host);
tasklet_init(&host->block_tasklet, wbsd_tasklet_block, (unsigned long)host);
return 0;
}
......@@ -1647,9 +1642,9 @@ static void __devexit wbsd_release_irq(struct wbsd_host* host)
return;
free_irq(host->irq, host);
host->irq = 0;
tasklet_kill(&host->card_tasklet);
tasklet_kill(&host->fifo_tasklet);
tasklet_kill(&host->crc_tasklet);
......@@ -1666,7 +1661,7 @@ static int __devinit wbsd_request_resources(struct wbsd_host* host,
int base, int irq, int dma)
{
int ret;
/*
* Allocate I/O ports.
*/
......@@ -1685,7 +1680,7 @@ static int __devinit wbsd_request_resources(struct wbsd_host* host,
* Allocate DMA.
*/
wbsd_request_dma(host, dma);
return 0;
}
......@@ -1708,7 +1703,7 @@ static void __devinit wbsd_chip_config(struct wbsd_host* host)
{
/*
* Reset the chip.
*/
*/
wbsd_write_config(host, WBSD_CONF_SWRST, 1);
wbsd_write_config(host, WBSD_CONF_SWRST, 0);
......@@ -1716,23 +1711,23 @@ static void __devinit wbsd_chip_config(struct wbsd_host* host)
* Select SD/MMC function.
*/
wbsd_write_config(host, WBSD_CONF_DEVICE, DEVICE_SD);
/*
* Set up card detection.
*/
wbsd_write_config(host, WBSD_CONF_PINS, WBSD_PINS_DETECT_GP11);
/*
* Configure chip
*/
wbsd_write_config(host, WBSD_CONF_PORT_HI, host->base >> 8);
wbsd_write_config(host, WBSD_CONF_PORT_LO, host->base & 0xff);
wbsd_write_config(host, WBSD_CONF_IRQ, host->irq);
if (host->dma >= 0)
wbsd_write_config(host, WBSD_CONF_DRQ, host->dma);
/*
* Enable and power up chip.
*/
......@@ -1743,26 +1738,26 @@ static void __devinit wbsd_chip_config(struct wbsd_host* host)
/*
* Check that configured resources are correct.
*/
static int __devinit wbsd_chip_validate(struct wbsd_host* host)
{
int base, irq, dma;
/*
* Select SD/MMC function.
*/
wbsd_write_config(host, WBSD_CONF_DEVICE, DEVICE_SD);
/*
* Read configuration.
*/
base = wbsd_read_config(host, WBSD_CONF_PORT_HI) << 8;
base |= wbsd_read_config(host, WBSD_CONF_PORT_LO);
irq = wbsd_read_config(host, WBSD_CONF_IRQ);
dma = wbsd_read_config(host, WBSD_CONF_DRQ);
/*
* Validate against given configuration.
*/
......@@ -1772,7 +1767,7 @@ static int __devinit wbsd_chip_validate(struct wbsd_host* host)
return 0;
if ((dma != host->dma) && (host->dma != -1))
return 0;
return 1;
}
......@@ -1788,14 +1783,14 @@ static int __devinit wbsd_init(struct device* dev, int base, int irq, int dma,
struct wbsd_host* host = NULL;
struct mmc_host* mmc = NULL;
int ret;
ret = wbsd_alloc_mmc(dev);
if (ret)
return ret;
mmc = dev_get_drvdata(dev);
host = mmc_priv(mmc);
/*
* Scan for hardware.
*/
......@@ -1814,7 +1809,7 @@ static int __devinit wbsd_init(struct device* dev, int base, int irq, int dma,
return ret;
}
}
/*
* Request resources.
*/
......@@ -1825,7 +1820,7 @@ static int __devinit wbsd_init(struct device* dev, int base, int irq, int dma,
wbsd_free_mmc(dev);
return ret;
}
/*
* See if chip needs to be configured.
*/
......@@ -1842,7 +1837,7 @@ static int __devinit wbsd_init(struct device* dev, int base, int irq, int dma,
}
else
wbsd_chip_config(host);
/*
* Power Management stuff. No idea how this works.
* Not tested.
......@@ -1860,7 +1855,7 @@ static int __devinit wbsd_init(struct device* dev, int base, int irq, int dma,
* Reset the chip into a known state.
*/
wbsd_init_device(host);
mmc_add_host(mmc);
printk(KERN_INFO "%s: W83L51xD", mmc_hostname(mmc));
......@@ -1882,12 +1877,12 @@ static void __devexit wbsd_shutdown(struct device* dev, int pnp)
{
struct mmc_host* mmc = dev_get_drvdata(dev);
struct wbsd_host* host;
if (!mmc)
return;
host = mmc_priv(mmc);
mmc_remove_host(mmc);
if (!pnp)
......@@ -1900,9 +1895,9 @@ static void __devexit wbsd_shutdown(struct device* dev, int pnp)
wbsd_write_config(host, WBSD_CONF_ENABLE, 0);
wbsd_lock_config(host);
}
wbsd_release_resources(host);
wbsd_free_mmc(dev);
}
......@@ -1932,7 +1927,7 @@ static int __devinit
wbsd_pnp_probe(struct pnp_dev * pnpdev, const struct pnp_device_id *dev_id)
{
int io, irq, dma;
/*
* Get resources from PnP layer.
*/
......@@ -1942,9 +1937,9 @@ wbsd_pnp_probe(struct pnp_dev * pnpdev, const struct pnp_device_id *dev_id)
dma = pnp_dma(pnpdev, 0);
else
dma = -1;
DBGF("PnP resources: port %3x irq %d dma %d\n", io, irq, dma);
return wbsd_init(&pnpdev->dev, io, irq, dma, 1);
}
......@@ -1985,7 +1980,7 @@ static struct device_driver wbsd_driver = {
.bus = &platform_bus_type,
.probe = wbsd_probe,
.remove = wbsd_remove,
.suspend = wbsd_suspend,
.resume = wbsd_resume,
};
......@@ -2008,7 +2003,7 @@ static struct pnp_driver wbsd_pnp_driver = {
static int __init wbsd_drv_init(void)
{
int result;
printk(KERN_INFO DRIVER_NAME
": Winbond W83L51xD SD/MMC card interface driver, "
DRIVER_VERSION "\n");
......@@ -2023,8 +2018,8 @@ static int __init wbsd_drv_init(void)
return result;
}
#endif /* CONFIG_PNP */
#endif /* CONFIG_PNP */
if (nopnp)
{
result = driver_register(&wbsd_driver);
......@@ -2046,13 +2041,13 @@ static void __exit wbsd_drv_exit(void)
if (!nopnp)
pnp_unregister_driver(&wbsd_pnp_driver);
#endif /* CONFIG_PNP */
#endif /* CONFIG_PNP */
if (nopnp)
{
platform_device_unregister(wbsd_device);
driver_unregister(&wbsd_driver);
}
......
drivers/mmc/wbsd.h
View file @ bd6fe9e1
......@@ -139,51 +139,50 @@
struct wbsd_host
{
struct mmc_host* mmc; /* MMC structure */
spinlock_t lock; /* Mutex */
int flags; /* Driver states */
#define WBSD_FCARD_PRESENT (1<<0) /* Card is present */
#define WBSD_FIGNORE_DETECT (1<<1) /* Ignore card detection */
struct mmc_request* mrq; /* Current request */
u8 isr; /* Accumulated ISR */
struct scatterlist* cur_sg; /* Current SG entry */
unsigned int num_sg; /* Number of entries left */
void* mapped_sg; /* vaddr of mapped sg */
unsigned int offset; /* Offset into current entry */
unsigned int remain; /* Data left in curren entry */
int size; /* Total size of transfer */
char* dma_buffer; /* ISA DMA buffer */
dma_addr_t dma_addr; /* Physical address for same */
int firsterr; /* See fifo functions */
u8 clk; /* Current clock speed */
unsigned char bus_width; /* Current bus width */
int config; /* Config port */
u8 unlock_code; /* Code to unlock config */
int chip_id; /* ID of controller */
int base; /* I/O port base */
int irq; /* Interrupt */
int dma; /* DMA channel */
struct tasklet_struct card_tasklet; /* Tasklet structures */
struct tasklet_struct fifo_tasklet;
struct tasklet_struct crc_tasklet;
struct tasklet_struct timeout_tasklet;
struct tasklet_struct finish_tasklet;
struct tasklet_struct block_tasklet;
struct timer_list detect_timer; /* Card detection timer */
struct timer_list ignore_timer; /* Ignore detection timer */
};
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