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path: root/drivers/memstick/host/jmb38x_ms.c
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Diffstat (limited to 'drivers/memstick/host/jmb38x_ms.c')
-rw-r--r--drivers/memstick/host/jmb38x_ms.c113
1 files changed, 61 insertions, 52 deletions
diff --git a/drivers/memstick/host/jmb38x_ms.c b/drivers/memstick/host/jmb38x_ms.c
index 03fe8783b1e..8770a5fac3b 100644
--- a/drivers/memstick/host/jmb38x_ms.c
+++ b/drivers/memstick/host/jmb38x_ms.c
@@ -12,6 +12,7 @@
#include <linux/spinlock.h>
#include <linux/interrupt.h>
#include <linux/pci.h>
+#include <linux/dma-mapping.h>
#include <linux/delay.h>
#include <linux/highmem.h>
#include <linux/memstick.h>
@@ -56,8 +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];
@@ -94,9 +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
@@ -119,11 +131,17 @@ struct jmb38x_ms {
#define PAD_PU_PD_ON_MS_SOCK0 0x5f8f0000
#define PAD_PU_PD_ON_MS_SOCK1 0x0f0f0000
+#define CLOCK_CONTROL_40MHZ 0x00000001
+#define CLOCK_CONTROL_50MHZ 0x00000002
+#define CLOCK_CONTROL_60MHZ 0x00000008
+#define CLOCK_CONTROL_62_5MHZ 0x0000000c
+#define CLOCK_CONTROL_OFF 0x00000000
+
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,
@@ -273,7 +291,7 @@ static int jmb38x_ms_transfer_data(struct jmb38x_ms_host *host)
{
unsigned int length;
unsigned int off;
- unsigned int t_size, p_off, p_cnt;
+ unsigned int t_size, p_cnt;
unsigned char *buf;
struct page *pg;
unsigned long flags = 0;
@@ -287,6 +305,8 @@ static int jmb38x_ms_transfer_data(struct jmb38x_ms_host *host)
}
while (length) {
+ unsigned int uninitialized_var(p_off);
+
if (host->req->long_data) {
pg = nth_page(sg_page(&host->req->sg),
off >> PAGE_SHIFT);
@@ -364,28 +384,27 @@ 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
@@ -448,13 +467,12 @@ 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);
@@ -506,7 +524,7 @@ 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 {
@@ -595,19 +613,18 @@ static void jmb38x_ms_reset(struct jmb38x_ms_host *host)
{
unsigned int host_ctl = readl(host->addr + HOST_CONTROL);
- writel(host_ctl | HOST_CONTROL_RESET_REQ | HOST_CONTROL_RESET,
- host->addr + HOST_CONTROL);
+ writel(HOST_CONTROL_RESET_REQ, host->addr + HOST_CONTROL);
while (HOST_CONTROL_RESET_REQ
& (host_ctl = readl(host->addr + HOST_CONTROL))) {
- ndelay(100);
- dev_dbg(&host->chip->pdev->dev, "reset\n");
+ ndelay(20);
+ dev_dbg(&host->chip->pdev->dev, "reset %08x\n", host_ctl);
}
- writel(INT_STATUS_ALL, host->addr + INT_STATUS_ENABLE);
+ writel(HOST_CONTROL_RESET, host->addr + HOST_CONTROL);
+ mmiowb();
writel(INT_STATUS_ALL, host->addr + INT_SIGNAL_ENABLE);
-
- dev_dbg(&host->chip->pdev->dev, "reset\n");
+ writel(INT_STATUS_ALL, host->addr + INT_STATUS_ENABLE);
}
static void jmb38x_ms_set_param(struct memstick_host *msh,
@@ -615,10 +632,8 @@ static void jmb38x_ms_set_param(struct memstick_host *msh,
int value)
{
struct jmb38x_ms_host *host = memstick_priv(msh);
- unsigned int host_ctl;
- unsigned long flags;
-
- spin_lock_irqsave(&host->lock, flags);
+ unsigned int host_ctl = readl(host->addr + HOST_CONTROL);
+ unsigned int clock_ctl = CLOCK_CONTROL_40MHZ, clock_delay = 0;
switch (param) {
case MEMSTICK_POWER:
@@ -626,60 +641,57 @@ static void jmb38x_ms_set_param(struct memstick_host *msh,
jmb38x_ms_reset(host);
writel(host->id ? PAD_PU_PD_ON_MS_SOCK1
- : PAD_PU_PD_ON_MS_SOCK0,
+ : PAD_PU_PD_ON_MS_SOCK0,
host->addr + PAD_PU_PD);
writel(PAD_OUTPUT_ENABLE_MS,
host->addr + PAD_OUTPUT_ENABLE);
- host_ctl = readl(host->addr + HOST_CONTROL);
- host_ctl |= 7;
- writel(host_ctl | (HOST_CONTROL_POWER_EN
- | HOST_CONTROL_CLOCK_EN),
- host->addr + HOST_CONTROL);
+ host_ctl = 7;
+ host_ctl |= HOST_CONTROL_POWER_EN
+ | HOST_CONTROL_CLOCK_EN;
+ writel(host_ctl, host->addr + HOST_CONTROL);
dev_dbg(&host->chip->pdev->dev, "power on\n");
} else if (value == MEMSTICK_POWER_OFF) {
- writel(readl(host->addr + HOST_CONTROL)
- & ~(HOST_CONTROL_POWER_EN
- | HOST_CONTROL_CLOCK_EN),
- host->addr + HOST_CONTROL);
+ host_ctl &= ~(HOST_CONTROL_POWER_EN
+ | HOST_CONTROL_CLOCK_EN);
+ writel(host_ctl, host->addr + HOST_CONTROL);
writel(0, host->addr + PAD_OUTPUT_ENABLE);
writel(PAD_PU_PD_OFF, host->addr + PAD_PU_PD);
dev_dbg(&host->chip->pdev->dev, "power off\n");
}
break;
case MEMSTICK_INTERFACE:
- /* jmb38x_ms_reset(host); */
-
- host_ctl = readl(host->addr + HOST_CONTROL);
host_ctl &= ~(3 << HOST_CONTROL_IF_SHIFT);
- /* host_ctl |= 7; */
if (value == MEMSTICK_SERIAL) {
host_ctl &= ~HOST_CONTROL_FAST_CLK;
host_ctl |= HOST_CONTROL_IF_SERIAL
<< HOST_CONTROL_IF_SHIFT;
host_ctl |= HOST_CONTROL_REI;
- writel(0, host->addr + CLOCK_DELAY);
+ clock_ctl = CLOCK_CONTROL_40MHZ;
+ clock_delay = 0;
} else if (value == MEMSTICK_PAR4) {
host_ctl |= HOST_CONTROL_FAST_CLK;
host_ctl |= HOST_CONTROL_IF_PAR4
<< HOST_CONTROL_IF_SHIFT;
host_ctl &= ~HOST_CONTROL_REI;
- writel(4, host->addr + CLOCK_DELAY);
+ clock_ctl = CLOCK_CONTROL_40MHZ;
+ clock_delay = 4;
} else if (value == MEMSTICK_PAR8) {
host_ctl |= HOST_CONTROL_FAST_CLK;
host_ctl |= HOST_CONTROL_IF_PAR8
<< HOST_CONTROL_IF_SHIFT;
host_ctl &= ~HOST_CONTROL_REI;
- writel(4, host->addr + CLOCK_DELAY);
+ clock_ctl = CLOCK_CONTROL_60MHZ;
+ clock_delay = 0;
}
writel(host_ctl, host->addr + HOST_CONTROL);
+ writel(clock_ctl, host->addr + CLOCK_CONTROL);
+ writel(clock_delay, host->addr + CLOCK_DELAY);
break;
};
-
- spin_unlock_irqrestore(&host->lock, flags);
}
#ifdef CONFIG_PM
@@ -772,13 +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);
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-23 17:25:56 +0000