diff options
Diffstat (limited to 'drivers/memstick/host/jmb38x_ms.c')
| -rw-r--r-- | drivers/memstick/host/jmb38x_ms.c | 113 |
1 files changed, 61 insertions, 52 deletions
diff --git a/drivers/memstick/host/jmb38x_ms.c b/drivers/memstick/host/jmb38x_ms.c index 03fe8783b1ee..8770a5fac3b6 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); |