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authorAlex Dubov <oakad@yahoo.com>2008-03-19 17:01:06 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2008-03-19 18:53:37 -0700
commitead70773608a5d97f81cb492f117d20b5e9f323e (patch)
treefa71036f83c49c3b7aee99c11d152ddeb2b3599e /drivers/memstick/host
parent9df130392fb642ecd5564163b574ce69ffda1afa (diff)
downloadlinux-ead70773608a5d97f81cb492f117d20b5e9f323e.tar.bz2
memstick: automatically retrieve "INT" value from command response
MemoryStick storage cards, when in parallel mode, send several meaningful bits of their "INT" register as part of command response. This data is stored by host and can be used to spare invocation of "GET_INT" TPC on each data page transferred between host and card. Signed-off-by: Alex Dubov <oakad@yahoo.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/memstick/host')
-rw-r--r--drivers/memstick/host/jmb38x_ms.c48
-rw-r--r--drivers/memstick/host/tifm_ms.c17
2 files changed, 37 insertions, 28 deletions
diff --git a/drivers/memstick/host/jmb38x_ms.c b/drivers/memstick/host/jmb38x_ms.c
index 9a57504183c7..f91037d50422 100644
--- a/drivers/memstick/host/jmb38x_ms.c
+++ b/drivers/memstick/host/jmb38x_ms.c
@@ -57,8 +57,6 @@ struct jmb38x_ms_host {
unsigned long timeout_jiffies;
struct timer_list timer;
struct memstick_request *req;
- unsigned char eject:1,
- use_dma:1;
unsigned char cmd_flags;
unsigned char io_pos;
unsigned int io_word[2];
@@ -95,9 +93,22 @@ struct jmb38x_ms {
#define HOST_CONTROL_IF_PAR4 0x1
#define HOST_CONTROL_IF_PAR8 0x3
+#define STATUS_BUSY 0x00080000
+#define STATUS_MS_DAT7 0x00040000
+#define STATUS_MS_DAT6 0x00020000
+#define STATUS_MS_DAT5 0x00010000
+#define STATUS_MS_DAT4 0x00008000
+#define STATUS_MS_DAT3 0x00004000
+#define STATUS_MS_DAT2 0x00002000
+#define STATUS_MS_DAT1 0x00001000
+#define STATUS_MS_DAT0 0x00000800
#define STATUS_HAS_MEDIA 0x00000400
#define STATUS_FIFO_EMPTY 0x00000200
#define STATUS_FIFO_FULL 0x00000100
+#define STATUS_MS_CED 0x00000080
+#define STATUS_MS_ERR 0x00000040
+#define STATUS_MS_BRQ 0x00000020
+#define STATUS_MS_CNK 0x00000001
#define INT_STATUS_TPC_ERR 0x00080000
#define INT_STATUS_CRC_ERR 0x00040000
@@ -124,7 +135,7 @@ enum {
CMD_READY = 0x01,
FIFO_READY = 0x02,
REG_DATA = 0x04,
- AUTO_GET_INT = 0x08
+ DMA_DATA = 0x08
};
static unsigned int jmb38x_ms_read_data(struct jmb38x_ms_host *host,
@@ -367,28 +378,27 @@ static int jmb38x_ms_issue_cmd(struct memstick_host *msh)
cmd |= TPC_DIR;
if (host->req->need_card_int)
cmd |= TPC_WAIT_INT;
- if (host->req->get_int_reg)
- cmd |= TPC_GET_INT;
data = host->req->data;
- host->use_dma = !no_dma;
+ if (!no_dma)
+ host->cmd_flags |= DMA_DATA;
if (host->req->long_data) {
data_len = host->req->sg.length;
} else {
data_len = host->req->data_len;
- host->use_dma = 0;
+ host->cmd_flags &= ~DMA_DATA;
}
if (data_len <= 8) {
cmd &= ~(TPC_DATA_SEL | 0xf);
host->cmd_flags |= REG_DATA;
cmd |= data_len & 0xf;
- host->use_dma = 0;
+ host->cmd_flags &= ~DMA_DATA;
}
- if (host->use_dma) {
+ if (host->cmd_flags & DMA_DATA) {
if (1 != pci_map_sg(host->chip->pdev, &host->req->sg, 1,
host->req->data_dir == READ
? PCI_DMA_FROMDEVICE
@@ -451,13 +461,12 @@ static void jmb38x_ms_complete_cmd(struct memstick_host *msh, int last)
readl(host->addr + INT_STATUS));
dev_dbg(msh->cdev.dev, "c hstatus %08x\n", readl(host->addr + STATUS));
- if (host->req->get_int_reg) {
- t_val = readl(host->addr + TPC_P0);
- host->req->int_reg = (t_val & 0xff);
- }
+ host->req->int_reg = readl(host->addr + STATUS) & 0xff;
+
+ writel(0, host->addr + BLOCK);
+ writel(0, host->addr + DMA_CONTROL);
- if (host->use_dma) {
- writel(0, host->addr + DMA_CONTROL);
+ if (host->cmd_flags & DMA_DATA) {
pci_unmap_sg(host->chip->pdev, &host->req->sg, 1,
host->req->data_dir == READ
? PCI_DMA_FROMDEVICE : PCI_DMA_TODEVICE);
@@ -509,7 +518,7 @@ static irqreturn_t jmb38x_ms_isr(int irq, void *dev_id)
else
host->req->error = -ETIME;
} else {
- if (host->use_dma) {
+ if (host->cmd_flags & DMA_DATA) {
if (irq_status & INT_STATUS_EOTRAN)
host->cmd_flags |= FIFO_READY;
} else {
@@ -775,13 +784,10 @@ static struct memstick_host *jmb38x_ms_alloc_host(struct jmb38x_ms *jm, int cnt)
snprintf(host->host_id, DEVICE_ID_SIZE, DRIVER_NAME ":slot%d",
host->id);
host->irq = jm->pdev->irq;
- host->timeout_jiffies = msecs_to_jiffies(4000);
+ host->timeout_jiffies = msecs_to_jiffies(1000);
msh->request = jmb38x_ms_request;
msh->set_param = jmb38x_ms_set_param;
- /*
- msh->caps = MEMSTICK_CAP_AUTO_GET_INT | MEMSTICK_CAP_PAR4
- | MEMSTICK_CAP_PAR8;
- */
+
msh->caps = MEMSTICK_CAP_PAR4 | MEMSTICK_CAP_PAR8;
setup_timer(&host->timer, jmb38x_ms_abort, (unsigned long)msh);
diff --git a/drivers/memstick/host/tifm_ms.c b/drivers/memstick/host/tifm_ms.c
index 2b5bf52a8302..eb150dfb637f 100644
--- a/drivers/memstick/host/tifm_ms.c
+++ b/drivers/memstick/host/tifm_ms.c
@@ -340,11 +340,20 @@ static void tifm_ms_complete_cmd(struct tifm_ms *host)
del_timer(&host->timer);
- if (host->use_dma)
+ host->req->int_reg = readl(sock->addr + SOCK_MS_STATUS) & 0xff;
+ host->req->int_reg = (host->req->int_reg & 1)
+ | ((host->req->int_reg << 4) & 0xe0);
+
+ writel(TIFM_FIFO_INT_SETALL,
+ sock->addr + SOCK_DMA_FIFO_INT_ENABLE_CLEAR);
+ writel(TIFM_DMA_RESET, sock->addr + SOCK_DMA_CONTROL);
+
+ if (host->use_dma) {
tifm_unmap_sg(sock, &host->req->sg, 1,
host->req->data_dir == READ
? PCI_DMA_FROMDEVICE
: PCI_DMA_TODEVICE);
+ }
writel((~TIFM_CTRL_LED) & readl(sock->addr + SOCK_CONTROL),
sock->addr + SOCK_CONTROL);
@@ -424,12 +433,6 @@ static void tifm_ms_card_event(struct tifm_dev *sock)
else if (host_status & TIFM_MS_STAT_CRC)
host->req->error = -EILSEQ;
- if (host->req->error) {
- writel(TIFM_FIFO_INT_SETALL,
- sock->addr + SOCK_DMA_FIFO_INT_ENABLE_CLEAR);
- writel(TIFM_DMA_RESET, sock->addr + SOCK_DMA_CONTROL);
- }
-
if (host_status & TIFM_MS_STAT_RDY)
host->cmd_flags |= CMD_READY;