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-rw-r--r--drivers/mmc/host/Kconfig36
-rw-r--r--drivers/mmc/host/Makefile2
-rw-r--r--drivers/mmc/host/cb710-mmc.c6
-rw-r--r--drivers/mmc/host/imxmmc.c2
-rw-r--r--drivers/mmc/host/mmc_spi.c6
-rw-r--r--drivers/mmc/host/mvsdio.c4
-rw-r--r--drivers/mmc/host/pxamci.c4
-rw-r--r--drivers/mmc/host/s3cmci.c2
-rw-r--r--drivers/mmc/host/sdhci-of.c13
-rw-r--r--drivers/mmc/host/sdhci-pci.c20
-rw-r--r--drivers/mmc/host/sdhci-s3c.c428
-rw-r--r--drivers/mmc/host/sdhci.c67
-rw-r--r--drivers/mmc/host/sdhci.h7
-rw-r--r--drivers/mmc/host/via-sdmmc.c1362
14 files changed, 1941 insertions, 18 deletions
diff --git a/drivers/mmc/host/Kconfig b/drivers/mmc/host/Kconfig
index 40111a6d8d5..891ef18bd77 100644
--- a/drivers/mmc/host/Kconfig
+++ b/drivers/mmc/host/Kconfig
@@ -94,6 +94,31 @@ config MMC_SDHCI_PLTFM
If unsure, say N.
+config MMC_SDHCI_S3C
+ tristate "SDHCI support on Samsung S3C SoC"
+ depends on MMC_SDHCI && (PLAT_S3C24XX || PLAT_S3C64XX)
+ help
+ This selects the Secure Digital Host Controller Interface (SDHCI)
+ often referrered to as the HSMMC block in some of the Samsung S3C
+ range of SoC.
+
+ Note, due to the problems with DMA, the DMA support is only
+ available with CONFIG_EXPERIMENTAL is selected.
+
+ If you have a controller with this interface, say Y or M here.
+
+ If unsure, say N.
+
+config MMC_SDHCI_S3C_DMA
+ bool "DMA support on S3C SDHCI"
+ depends on MMC_SDHCI_S3C && EXPERIMENTAL
+ help
+ Enable DMA support on the Samsung S3C SDHCI glue. The DMA
+ has proved to be problematic if the controller encounters
+ certain errors, and thus should be treated with care.
+
+ YMMV.
+
config MMC_OMAP
tristate "TI OMAP Multimedia Card Interface support"
depends on ARCH_OMAP
@@ -265,3 +290,14 @@ config MMC_CB710
This driver can also be built as a module. If so, the module
will be called cb710-mmc.
+config MMC_VIA_SDMMC
+ tristate "VIA SD/MMC Card Reader Driver"
+ depends on PCI
+ help
+ This selects the VIA SD/MMC Card Reader driver, say Y or M here.
+ VIA provides one multi-functional card reader which integrated into
+ some motherboards manufactured by VIA. This card reader supports
+ SD/MMC/SDHC.
+ If you have a controller with this interface, say Y or M here.
+
+ If unsure, say N.
diff --git a/drivers/mmc/host/Makefile b/drivers/mmc/host/Makefile
index 79da397c5fe..cf153f62845 100644
--- a/drivers/mmc/host/Makefile
+++ b/drivers/mmc/host/Makefile
@@ -15,6 +15,7 @@ obj-$(CONFIG_MMC_SDHCI_PCI) += sdhci-pci.o
obj-$(CONFIG_MMC_RICOH_MMC) += ricoh_mmc.o
obj-$(CONFIG_MMC_SDHCI_OF) += sdhci-of.o
obj-$(CONFIG_MMC_SDHCI_PLTFM) += sdhci-pltfm.o
+obj-$(CONFIG_MMC_SDHCI_S3C) += sdhci-s3c.o
obj-$(CONFIG_MMC_WBSD) += wbsd.o
obj-$(CONFIG_MMC_AU1X) += au1xmmc.o
obj-$(CONFIG_MMC_OMAP) += omap.o
@@ -31,6 +32,7 @@ obj-$(CONFIG_MMC_S3C) += s3cmci.o
obj-$(CONFIG_MMC_SDRICOH_CS) += sdricoh_cs.o
obj-$(CONFIG_MMC_TMIO) += tmio_mmc.o
obj-$(CONFIG_MMC_CB710) += cb710-mmc.o
+obj-$(CONFIG_MMC_VIA_SDMMC) += via-sdmmc.o
ifeq ($(CONFIG_CB710_DEBUG),y)
CFLAGS-cb710-mmc += -DDEBUG
diff --git a/drivers/mmc/host/cb710-mmc.c b/drivers/mmc/host/cb710-mmc.c
index 11efefb1af5..4e72964a7b4 100644
--- a/drivers/mmc/host/cb710-mmc.c
+++ b/drivers/mmc/host/cb710-mmc.c
@@ -278,7 +278,7 @@ static int cb710_mmc_receive(struct cb710_slot *slot, struct mmc_data *data)
if (unlikely(data->blksz & 15 && (data->blocks != 1 || data->blksz != 8)))
return -EINVAL;
- sg_miter_start(&miter, data->sg, data->sg_len, 0);
+ sg_miter_start(&miter, data->sg, data->sg_len, SG_MITER_TO_SG);
cb710_modify_port_8(slot, CB710_MMC_CONFIG2_PORT,
15, CB710_MMC_C2_READ_PIO_SIZE_MASK);
@@ -307,7 +307,7 @@ static int cb710_mmc_receive(struct cb710_slot *slot, struct mmc_data *data)
goto out;
}
out:
- cb710_sg_miter_stop_writing(&miter);
+ sg_miter_stop(&miter);
return err;
}
@@ -322,7 +322,7 @@ static int cb710_mmc_send(struct cb710_slot *slot, struct mmc_data *data)
if (unlikely(data->blocks > 1 && data->blksz & 15))
return -EINVAL;
- sg_miter_start(&miter, data->sg, data->sg_len, 0);
+ sg_miter_start(&miter, data->sg, data->sg_len, SG_MITER_FROM_SG);
cb710_modify_port_8(slot, CB710_MMC_CONFIG2_PORT,
0, CB710_MMC_C2_READ_PIO_SIZE_MASK);
diff --git a/drivers/mmc/host/imxmmc.c b/drivers/mmc/host/imxmmc.c
index e0be21a4a69..bf98d7cc928 100644
--- a/drivers/mmc/host/imxmmc.c
+++ b/drivers/mmc/host/imxmmc.c
@@ -652,7 +652,7 @@ static irqreturn_t imxmci_irq(int irq, void *devid)
set_bit(IMXMCI_PEND_STARTED_b, &host->pending_events);
tasklet_schedule(&host->tasklet);
- return IRQ_RETVAL(handled);;
+ return IRQ_RETVAL(handled);
}
static void imxmci_tasklet_fnc(unsigned long data)
diff --git a/drivers/mmc/host/mmc_spi.c b/drivers/mmc/host/mmc_spi.c
index 240608cc7ae..a461017ce5c 100644
--- a/drivers/mmc/host/mmc_spi.c
+++ b/drivers/mmc/host/mmc_spi.c
@@ -1313,6 +1313,12 @@ static int mmc_spi_probe(struct spi_device *spi)
struct mmc_spi_host *host;
int status;
+ /* We rely on full duplex transfers, mostly to reduce
+ * per-transfer overheads (by making fewer transfers).
+ */
+ if (spi->master->flags & SPI_MASTER_HALF_DUPLEX)
+ return -EINVAL;
+
/* MMC and SD specs only seem to care that sampling is on the
* rising edge ... meaning SPI modes 0 or 3. So either SPI mode
* should be legit. We'll use mode 0 since the steady state is 0,
diff --git a/drivers/mmc/host/mvsdio.c b/drivers/mmc/host/mvsdio.c
index b56d72ff06e..34e23489811 100644
--- a/drivers/mmc/host/mvsdio.c
+++ b/drivers/mmc/host/mvsdio.c
@@ -384,7 +384,7 @@ static irqreturn_t mvsd_irq(int irq, void *dev)
u16 val[2] = {0, 0};
val[0] = mvsd_read(MVSD_FIFO);
val[1] = mvsd_read(MVSD_FIFO);
- memcpy(p, &val, s);
+ memcpy(p, ((void *)&val) + 4 - s, s);
s = 0;
intr_status = mvsd_read(MVSD_NOR_INTR_STATUS);
}
@@ -423,7 +423,7 @@ static irqreturn_t mvsd_irq(int irq, void *dev)
if (s < 4) {
if (s && (intr_status & MVSD_NOR_TX_AVAIL)) {
u16 val[2] = {0, 0};
- memcpy(&val, p, s);
+ memcpy(((void *)&val) + 4 - s, p, s);
mvsd_write(MVSD_FIFO, val[0]);
mvsd_write(MVSD_FIFO, val[1]);
s = 0;
diff --git a/drivers/mmc/host/pxamci.c b/drivers/mmc/host/pxamci.c
index d7d7109ef47..e55ac792d68 100644
--- a/drivers/mmc/host/pxamci.c
+++ b/drivers/mmc/host/pxamci.c
@@ -168,12 +168,12 @@ static void pxamci_setup_data(struct pxamci_host *host, struct mmc_data *data)
if (data->flags & MMC_DATA_READ) {
host->dma_dir = DMA_FROM_DEVICE;
- dcmd = DCMD_INCTRGADDR | DCMD_FLOWTRG;
+ dcmd = DCMD_INCTRGADDR | DCMD_FLOWSRC;
DRCMR(host->dma_drcmrtx) = 0;
DRCMR(host->dma_drcmrrx) = host->dma | DRCMR_MAPVLD;
} else {
host->dma_dir = DMA_TO_DEVICE;
- dcmd = DCMD_INCSRCADDR | DCMD_FLOWSRC;
+ dcmd = DCMD_INCSRCADDR | DCMD_FLOWTRG;
DRCMR(host->dma_drcmrrx) = 0;
DRCMR(host->dma_drcmrtx) = host->dma | DRCMR_MAPVLD;
}
diff --git a/drivers/mmc/host/s3cmci.c b/drivers/mmc/host/s3cmci.c
index 4eb4f37544a..8c08cd7efa7 100644
--- a/drivers/mmc/host/s3cmci.c
+++ b/drivers/mmc/host/s3cmci.c
@@ -794,7 +794,7 @@ static void s3cmci_dma_setup(struct s3cmci_host *host,
host->mem->start + host->sdidata);
if (!setup_ok) {
- s3c2410_dma_config(host->dma, 4, 0);
+ s3c2410_dma_config(host->dma, 4);
s3c2410_dma_set_buffdone_fn(host->dma,
s3cmci_dma_done_callback);
s3c2410_dma_setflags(host->dma, S3C2410_DMAF_AUTOSTART);
diff --git a/drivers/mmc/host/sdhci-of.c b/drivers/mmc/host/sdhci-of.c
index 128c614d11a..1e8aa590bb3 100644
--- a/drivers/mmc/host/sdhci-of.c
+++ b/drivers/mmc/host/sdhci-of.c
@@ -158,6 +158,13 @@ static unsigned int esdhc_get_max_clock(struct sdhci_host *host)
return of_host->clock;
}
+static unsigned int esdhc_get_min_clock(struct sdhci_host *host)
+{
+ struct sdhci_of_host *of_host = sdhci_priv(host);
+
+ return of_host->clock / 256 / 16;
+}
+
static unsigned int esdhc_get_timeout_clock(struct sdhci_host *host)
{
struct sdhci_of_host *of_host = sdhci_priv(host);
@@ -184,6 +191,7 @@ static struct sdhci_of_data sdhci_esdhc = {
.set_clock = esdhc_set_clock,
.enable_dma = esdhc_enable_dma,
.get_max_clock = esdhc_get_max_clock,
+ .get_min_clock = esdhc_get_min_clock,
.get_timeout_clock = esdhc_get_timeout_clock,
},
};
@@ -226,7 +234,7 @@ static int __devinit sdhci_of_probe(struct of_device *ofdev,
return -ENODEV;
host = sdhci_alloc_host(&ofdev->dev, sizeof(*of_host));
- if (!host)
+ if (IS_ERR(host))
return -ENOMEM;
of_host = sdhci_priv(host);
@@ -250,6 +258,9 @@ static int __devinit sdhci_of_probe(struct of_device *ofdev,
host->ops = &sdhci_of_data->ops;
}
+ if (of_get_property(np, "sdhci,1-bit-only", NULL))
+ host->quirks |= SDHCI_QUIRK_FORCE_1_BIT_DATA;
+
clk = of_get_property(np, "clock-frequency", &size);
if (clk && size == sizeof(*clk) && *clk)
of_host->clock = *clk;
diff --git a/drivers/mmc/host/sdhci-pci.c b/drivers/mmc/host/sdhci-pci.c
index 65be27995d5..2f15cc17d88 100644
--- a/drivers/mmc/host/sdhci-pci.c
+++ b/drivers/mmc/host/sdhci-pci.c
@@ -284,6 +284,18 @@ static const struct sdhci_pci_fixes sdhci_jmicron = {
.resume = jmicron_resume,
};
+static int via_probe(struct sdhci_pci_chip *chip)
+{
+ if (chip->pdev->revision == 0x10)
+ chip->quirks |= SDHCI_QUIRK_DELAY_AFTER_POWER;
+
+ return 0;
+}
+
+static const struct sdhci_pci_fixes sdhci_via = {
+ .probe = via_probe,
+};
+
static const struct pci_device_id pci_ids[] __devinitdata = {
{
.vendor = PCI_VENDOR_ID_RICOH,
@@ -349,6 +361,14 @@ static const struct pci_device_id pci_ids[] __devinitdata = {
.driver_data = (kernel_ulong_t)&sdhci_jmicron,
},
+ {
+ .vendor = PCI_VENDOR_ID_VIA,
+ .device = 0x95d0,
+ .subvendor = PCI_ANY_ID,
+ .subdevice = PCI_ANY_ID,
+ .driver_data = (kernel_ulong_t)&sdhci_via,
+ },
+
{ /* Generic SD host controller */
PCI_DEVICE_CLASS((PCI_CLASS_SYSTEM_SDHCI << 8), 0xFFFF00)
},
diff --git a/drivers/mmc/host/sdhci-s3c.c b/drivers/mmc/host/sdhci-s3c.c
new file mode 100644
index 00000000000..50997d2a63e
--- /dev/null
+++ b/drivers/mmc/host/sdhci-s3c.c
@@ -0,0 +1,428 @@
+/* linux/drivers/mmc/host/sdhci-s3c.c
+ *
+ * Copyright 2008 Openmoko Inc.
+ * Copyright 2008 Simtec Electronics
+ * Ben Dooks <ben@simtec.co.uk>
+ * http://armlinux.simtec.co.uk/
+ *
+ * SDHCI (HSMMC) support for Samsung SoC
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/delay.h>
+#include <linux/dma-mapping.h>
+#include <linux/platform_device.h>
+#include <linux/clk.h>
+#include <linux/io.h>
+
+#include <linux/mmc/host.h>
+
+#include <plat/sdhci.h>
+#include <plat/regs-sdhci.h>
+
+#include "sdhci.h"
+
+#define MAX_BUS_CLK (4)
+
+/**
+ * struct sdhci_s3c - S3C SDHCI instance
+ * @host: The SDHCI host created
+ * @pdev: The platform device we where created from.
+ * @ioarea: The resource created when we claimed the IO area.
+ * @pdata: The platform data for this controller.
+ * @cur_clk: The index of the current bus clock.
+ * @clk_io: The clock for the internal bus interface.
+ * @clk_bus: The clocks that are available for the SD/MMC bus clock.
+ */
+struct sdhci_s3c {
+ struct sdhci_host *host;
+ struct platform_device *pdev;
+ struct resource *ioarea;
+ struct s3c_sdhci_platdata *pdata;
+ unsigned int cur_clk;
+
+ struct clk *clk_io;
+ struct clk *clk_bus[MAX_BUS_CLK];
+};
+
+static inline struct sdhci_s3c *to_s3c(struct sdhci_host *host)
+{
+ return sdhci_priv(host);
+}
+
+/**
+ * get_curclk - convert ctrl2 register to clock source number
+ * @ctrl2: Control2 register value.
+ */
+static u32 get_curclk(u32 ctrl2)
+{
+ ctrl2 &= S3C_SDHCI_CTRL2_SELBASECLK_MASK;
+ ctrl2 >>= S3C_SDHCI_CTRL2_SELBASECLK_SHIFT;
+
+ return ctrl2;
+}
+
+static void sdhci_s3c_check_sclk(struct sdhci_host *host)
+{
+ struct sdhci_s3c *ourhost = to_s3c(host);
+ u32 tmp = readl(host->ioaddr + S3C_SDHCI_CONTROL2);
+
+ if (get_curclk(tmp) != ourhost->cur_clk) {
+ dev_dbg(&ourhost->pdev->dev, "restored ctrl2 clock setting\n");
+
+ tmp &= ~S3C_SDHCI_CTRL2_SELBASECLK_MASK;
+ tmp |= ourhost->cur_clk << S3C_SDHCI_CTRL2_SELBASECLK_SHIFT;
+ writel(tmp, host->ioaddr + 0x80);
+ }
+}
+
+/**
+ * sdhci_s3c_get_max_clk - callback to get maximum clock frequency.
+ * @host: The SDHCI host instance.
+ *
+ * Callback to return the maximum clock rate acheivable by the controller.
+*/
+static unsigned int sdhci_s3c_get_max_clk(struct sdhci_host *host)
+{
+ struct sdhci_s3c *ourhost = to_s3c(host);
+ struct clk *busclk;
+ unsigned int rate, max;
+ int clk;
+
+ /* note, a reset will reset the clock source */
+
+ sdhci_s3c_check_sclk(host);
+
+ for (max = 0, clk = 0; clk < MAX_BUS_CLK; clk++) {
+ busclk = ourhost->clk_bus[clk];
+ if (!busclk)
+ continue;
+
+ rate = clk_get_rate(busclk);
+ if (rate > max)
+ max = rate;
+ }
+
+ return max;
+}
+
+static unsigned int sdhci_s3c_get_timeout_clk(struct sdhci_host *host)
+{
+ return sdhci_s3c_get_max_clk(host) / 1000000;
+}
+
+/**
+ * sdhci_s3c_consider_clock - consider one the bus clocks for current setting
+ * @ourhost: Our SDHCI instance.
+ * @src: The source clock index.
+ * @wanted: The clock frequency wanted.
+ */
+static unsigned int sdhci_s3c_consider_clock(struct sdhci_s3c *ourhost,
+ unsigned int src,
+ unsigned int wanted)
+{
+ unsigned long rate;
+ struct clk *clksrc = ourhost->clk_bus[src];
+ int div;
+
+ if (!clksrc)
+ return UINT_MAX;
+
+ rate = clk_get_rate(clksrc);
+
+ for (div = 1; div < 256; div *= 2) {
+ if ((rate / div) <= wanted)
+ break;
+ }
+
+ dev_dbg(&ourhost->pdev->dev, "clk %d: rate %ld, want %d, got %ld\n",
+ src, rate, wanted, rate / div);
+
+ return (wanted - (rate / div));
+}
+
+/**
+ * sdhci_s3c_set_clock - callback on clock change
+ * @host: The SDHCI host being changed
+ * @clock: The clock rate being requested.
+ *
+ * When the card's clock is going to be changed, look at the new frequency
+ * and find the best clock source to go with it.
+*/
+static void sdhci_s3c_set_clock(struct sdhci_host *host, unsigned int clock)
+{
+ struct sdhci_s3c *ourhost = to_s3c(host);
+ unsigned int best = UINT_MAX;
+ unsigned int delta;
+ int best_src = 0;
+ int src;
+ u32 ctrl;
+
+ /* don't bother if the clock is going off. */
+ if (clock == 0)
+ return;
+
+ for (src = 0; src < MAX_BUS_CLK; src++) {
+ delta = sdhci_s3c_consider_clock(ourhost, src, clock);
+ if (delta < best) {
+ best = delta;
+ best_src = src;
+ }
+ }
+
+ dev_dbg(&ourhost->pdev->dev,
+ "selected source %d, clock %d, delta %d\n",
+ best_src, clock, best);
+
+ /* select the new clock source */
+
+ if (ourhost->cur_clk != best_src) {
+ struct clk *clk = ourhost->clk_bus[best_src];
+
+ /* turn clock off to card before changing clock source */
+ writew(0, host->ioaddr + SDHCI_CLOCK_CONTROL);
+
+ ourhost->cur_clk = best_src;
+ host->max_clk = clk_get_rate(clk);
+ host->timeout_clk = sdhci_s3c_get_timeout_clk(host);
+
+ ctrl = readl(host->ioaddr + S3C_SDHCI_CONTROL2);
+ ctrl &= ~S3C_SDHCI_CTRL2_SELBASECLK_MASK;
+ ctrl |= best_src << S3C_SDHCI_CTRL2_SELBASECLK_SHIFT;
+ writel(ctrl, host->ioaddr + S3C_SDHCI_CONTROL2);
+ }
+
+ /* reconfigure the hardware for new clock rate */
+
+ {
+ struct mmc_ios ios;
+
+ ios.clock = clock;
+
+ if (ourhost->pdata->cfg_card)
+ (ourhost->pdata->cfg_card)(ourhost->pdev, host->ioaddr,
+ &ios, NULL);
+ }
+}
+
+static struct sdhci_ops sdhci_s3c_ops = {
+ .get_max_clock = sdhci_s3c_get_max_clk,
+ .get_timeout_clock = sdhci_s3c_get_timeout_clk,
+ .set_clock = sdhci_s3c_set_clock,
+};
+
+static int __devinit sdhci_s3c_probe(struct platform_device *pdev)
+{
+ struct s3c_sdhci_platdata *pdata = pdev->dev.platform_data;
+ struct device *dev = &pdev->dev;
+ struct sdhci_host *host;
+ struct sdhci_s3c *sc;
+ struct resource *res;
+ int ret, irq, ptr, clks;
+
+ if (!pdata) {
+ dev_err(dev, "no device data specified\n");
+ return -ENOENT;
+ }
+
+ irq = platform_get_irq(pdev, 0);
+ if (irq < 0) {
+ dev_err(dev, "no irq specified\n");
+ return irq;
+ }
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!res) {
+ dev_err(dev, "no memory specified\n");
+ return -ENOENT;
+ }
+
+ host = sdhci_alloc_host(dev, sizeof(struct sdhci_s3c));
+ if (IS_ERR(host)) {
+ dev_err(dev, "sdhci_alloc_host() failed\n");
+ return PTR_ERR(host);
+ }
+
+ sc = sdhci_priv(host);
+
+ sc->host = host;
+ sc->pdev = pdev;
+ sc->pdata = pdata;
+
+ platform_set_drvdata(pdev, host);
+
+ sc->clk_io = clk_get(dev, "hsmmc");
+ if (IS_ERR(sc->clk_io)) {
+ dev_err(dev, "failed to get io clock\n");
+ ret = PTR_ERR(sc->clk_io);
+ goto err_io_clk;
+ }
+
+ /* enable the local io clock and keep it running for the moment. */
+ clk_enable(sc->clk_io);
+
+ for (clks = 0, ptr = 0; ptr < MAX_BUS_CLK; ptr++) {
+ struct clk *clk;
+ char *name = pdata->clocks[ptr];
+
+ if (name == NULL)
+ continue;
+
+ clk = clk_get(dev, name);
+ if (IS_ERR(clk)) {
+ dev_err(dev, "failed to get clock %s\n", name);
+ continue;
+ }
+
+ clks++;
+ sc->clk_bus[ptr] = clk;
+ clk_enable(clk);
+
+ dev_info(dev, "clock source %d: %s (%ld Hz)\n",
+ ptr, name, clk_get_rate(clk));
+ }
+
+ if (clks == 0) {
+ dev_err(dev, "failed to find any bus clocks\n");
+ ret = -ENOENT;
+ goto err_no_busclks;
+ }
+
+ sc->ioarea = request_mem_region(res->start, resource_size(res),
+ mmc_hostname(host->mmc));
+ if (!sc->ioarea) {
+ dev_err(dev, "failed to reserve register area\n");
+ ret = -ENXIO;
+ goto err_req_regs;
+ }
+
+ host->ioaddr = ioremap_nocache(res->start, resource_size(res));
+ if (!host->ioaddr) {
+ dev_err(dev, "failed to map registers\n");
+ ret = -ENXIO;
+ goto err_req_regs;
+ }
+
+ /* Ensure we have minimal gpio selected CMD/CLK/Detect */
+ if (pdata->cfg_gpio)
+ pdata->cfg_gpio(pdev, pdata->max_width);
+
+ host->hw_name = "samsung-hsmmc";
+ host->ops = &sdhci_s3c_ops;
+ host->quirks = 0;
+ host->irq = irq;
+
+ /* Setup quirks for the controller */
+
+ /* Currently with ADMA enabled we are getting some length
+ * interrupts that are not being dealt with, do disable
+ * ADMA until this is sorted out. */
+ host->quirks |= SDHCI_QUIRK_BROKEN_ADMA;
+ host->quirks |= SDHCI_QUIRK_32BIT_ADMA_SIZE;
+
+#ifndef CONFIG_MMC_SDHCI_S3C_DMA
+
+ /* we currently see overruns on errors, so disable the SDMA
+ * support as well. */
+ host->quirks |= SDHCI_QUIRK_BROKEN_DMA;
+
+ /* PIO currently has problems with multi-block IO */
+ host->quirks |= SDHCI_QUIRK_NO_MULTIBLOCK;
+
+#endif /* CONFIG_MMC_SDHCI_S3C_DMA */
+
+ /* It seems we do not get an DATA transfer complete on non-busy
+ * transfers, not sure if this is a problem with this specific
+ * SDHCI block, or a missing configuration that needs to be set. */
+ host->quirks |= SDHCI_QUIRK_NO_BUSY_IRQ;
+
+ host->quirks |= (SDHCI_QUIRK_32BIT_DMA_ADDR |
+ SDHCI_QUIRK_32BIT_DMA_SIZE);
+
+ ret = sdhci_add_host(host);
+ if (ret) {
+ dev_err(dev, "sdhci_add_host() failed\n");
+ goto err_add_host;
+ }
+
+ return 0;
+
+ err_add_host:
+ release_resource(sc->ioarea);
+ kfree(sc->ioarea);
+
+ err_req_regs:
+ for (ptr = 0; ptr < MAX_BUS_CLK; ptr++) {
+ clk_disable(sc->clk_bus[ptr]);
+ clk_put(sc->clk_bus[ptr]);
+ }
+
+ err_no_busclks:
+ clk_disable(sc->clk_io);
+ clk_put(sc->clk_io);
+
+ err_io_clk:
+ sdhci_free_host(host);
+
+ return ret;
+}
+
+static int __devexit sdhci_s3c_remove(struct platform_device *pdev)
+{
+ return 0;
+}
+
+#ifdef CONFIG_PM
+
+static int sdhci_s3c_suspend(struct platform_device *dev, pm_message_t pm)
+{
+ struct sdhci_host *host = platform_get_drvdata(dev);
+
+ sdhci_suspend_host(host, pm);
+ return 0;
+}
+
+static int sdhci_s3c_resume(struct platform_device *dev)
+{
+ struct sdhci_host *host = platform_get_drvdata(dev);
+
+ sdhci_resume_host(host);
+ return 0;
+}
+
+#else
+#define sdhci_s3c_suspend NULL
+#define sdhci_s3c_resume NULL
+#endif
+
+static struct platform_driver sdhci_s3c_driver = {
+ .probe = sdhci_s3c_probe,
+ .remove = __devexit_p(sdhci_s3c_remove),
+ .suspend = sdhci_s3c_suspend,
+ .resume = sdhci_s3c_resume,
+ .driver = {
+ .owner = THIS_MODULE,
+ .name = "s3c-sdhci",
+ },
+};
+
+static int __init sdhci_s3c_init(void)
+{
+ return platform_driver_register(&sdhci_s3c_driver);
+}
+
+static void __exit sdhci_s3c_exit(void)
+{
+ platform_driver_unregister(&sdhci_s3c_driver);
+}
+
+module_init(sdhci_s3c_init);
+module_exit(sdhci_s3c_exit);
+
+MODULE_DESCRIPTION("Samsung SDHCI (HSMMC) glue");
+MODULE_AUTHOR("Ben Dooks, <ben@simtec.co.uk>");
+MODULE_LICENSE("GPL v2");
+MODULE_ALIAS("platform:s3c-sdhci");
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
index 35789c6edc1..fc96f8cb9c0 100644
--- a/drivers/mmc/host/sdhci.c
+++ b/drivers/mmc/host/sdhci.c
@@ -584,7 +584,7 @@ static u8 sdhci_calc_timeout(struct sdhci_host *host, struct mmc_data *data)
* longer to time out, but that's much better than having a too-short
* timeout value.
*/
- if ((host->quirks & SDHCI_QUIRK_BROKEN_TIMEOUT_VAL))
+ if (host->quirks & SDHCI_QUIRK_BROKEN_TIMEOUT_VAL)
return 0xE;
/* timeout in us */
@@ -773,8 +773,14 @@ static void sdhci_prepare_data(struct sdhci_host *host, struct mmc_data *data)
}
if (!(host->flags & SDHCI_REQ_USE_DMA)) {
- sg_miter_start(&host->sg_miter,
- data->sg, data->sg_len, SG_MITER_ATOMIC);
+ int flags;
+
+ flags = SG_MITER_ATOMIC;
+ if (host->data->flags & MMC_DATA_READ)
+ flags |= SG_MITER_TO_SG;
+ else
+ flags |= SG_MITER_FROM_SG;
+ sg_miter_start(&host->sg_miter, data->sg, data->sg_len, flags);
host->blocks = data->blocks;
}
@@ -1051,12 +1057,19 @@ static void sdhci_set_power(struct sdhci_host *host, unsigned short power)
* At least the Marvell CaFe chip gets confused if we set the voltage
* and set turn on power at the same time, so set the voltage first.
*/
- if ((host->quirks & SDHCI_QUIRK_NO_SIMULT_VDD_AND_POWER))
+ if (host->quirks & SDHCI_QUIRK_NO_SIMULT_VDD_AND_POWER)
sdhci_writeb(host, pwr, SDHCI_POWER_CONTROL);
pwr |= SDHCI_POWER_ON;
sdhci_writeb(host, pwr, SDHCI_POWER_CONTROL);
+
+ /*
+ * Some controllers need an extra 10ms delay of 10ms before they
+ * can apply clock after applying power
+ */
+ if (host->quirks & SDHCI_QUIRK_DELAY_AFTER_POWER)
+ mdelay(10);
}
/*****************************************************************************\
@@ -1382,6 +1395,35 @@ static void sdhci_cmd_irq(struct sdhci_host *host, u32 intmask)
sdhci_finish_command(host);
}
+#ifdef DEBUG
+static void sdhci_show_adma_error(struct sdhci_host *host)
+{
+ const char *name = mmc_hostname(host->mmc);
+ u8 *desc = host->adma_desc;
+ __le32 *dma;
+ __le16 *len;
+ u8 attr;
+
+ sdhci_dumpregs(host);
+
+ while (true) {
+ dma = (__le32 *)(desc + 4);
+ len = (__le16 *)(desc + 2);
+ attr = *desc;
+
+ DBG("%s: %p: DMA 0x%08x, LEN 0x%04x, Attr=0x%02x\n",
+ name, desc, le32_to_cpu(*dma), le16_to_cpu(*len), attr);
+
+ desc += 8;
+
+ if (attr & 2)
+ break;
+ }
+}
+#else
+static void sdhci_show_adma_error(struct sdhci_host *host) { }
+#endif
+
static void sdhci_data_irq(struct sdhci_host *host, u32 intmask)
{
BUG_ON(intmask == 0);
@@ -1411,8 +1453,11 @@ static void sdhci_data_irq(struct sdhci_host *host, u32 intmask)
host->data->error = -ETIMEDOUT;
else if (intmask & (SDHCI_INT_DATA_CRC | SDHCI_INT_DATA_END_BIT))
host->data->error = -EILSEQ;
- else if (intmask & SDHCI_INT_ADMA_ERROR)
+ else if (intmask & SDHCI_INT_ADMA_ERROR) {
+ printk(KERN_ERR "%s: ADMA error\n", mmc_hostname(host->mmc));
+ sdhci_show_adma_error(host);
host->data->error = -EIO;
+ }
if (host->data->error)
sdhci_finish_data(host);
@@ -1727,9 +1772,15 @@ int sdhci_add_host(struct sdhci_host *host)
* Set host parameters.
*/
mmc->ops = &sdhci_ops;
- mmc->f_min = host->max_clk / 256;
+ if (host->ops->get_min_clock)
+ mmc->f_min = host->ops->get_min_clock(host);
+ else
+ mmc->f_min = host->max_clk / 256;
mmc->f_max = host->max_clk;
- mmc->caps = MMC_CAP_4_BIT_DATA | MMC_CAP_SDIO_IRQ;
+ mmc->caps = MMC_CAP_SDIO_IRQ;
+
+ if (!(host->quirks & SDHCI_QUIRK_FORCE_1_BIT_DATA))
+ mmc->caps |= MMC_CAP_4_BIT_DATA;
if (caps & SDHCI_CAN_DO_HISPD)
mmc->caps |= MMC_CAP_SD_HIGHSPEED;
@@ -1802,7 +1853,7 @@ int sdhci_add_host(struct sdhci_host *host)
/*
* Maximum block count.
*/
- mmc->max_blk_count = 65535;
+ mmc->max_blk_count = (host->quirks & SDHCI_QUIRK_NO_MULTIBLOCK) ? 1 : 65535;
/*
* Init tasklets.
diff --git a/drivers/mmc/host/sdhci.h b/drivers/mmc/host/sdhci.h
index 2de08349c3c..c77e9ff3022 100644
--- a/drivers/mmc/host/sdhci.h
+++ b/drivers/mmc/host/sdhci.h
@@ -226,6 +226,12 @@ struct sdhci_host {
#define SDHCI_QUIRK_RESTORE_IRQS_AFTER_RESET (1<<19)
/* Controller has to be forced to use block size of 2048 bytes */
#define SDHCI_QUIRK_FORCE_BLK_SZ_2048 (1<<20)
+/* Controller cannot do multi-block transfers */
+#define SDHCI_QUIRK_NO_MULTIBLOCK (1<<21)
+/* Controller can only handle 1-bit data transfers */
+#define SDHCI_QUIRK_FORCE_1_BIT_DATA (1<<22)
+/* Controller needs 10ms delay between applying power and clock */
+#define SDHCI_QUIRK_DELAY_AFTER_POWER (1<<23)
int irq; /* Device IRQ */
void __iomem * ioaddr; /* Mapped address */
@@ -296,6 +302,7 @@ struct sdhci_ops {
int (*enable_dma)(struct sdhci_host *host);
unsigned int (*get_max_clock)(struct sdhci_host *host);
+ unsigned int (*get_min_clock)(struct sdhci_host *host);
unsigned int (*get_timeout_clock)(struct sdhci_host *host);
};
diff --git a/drivers/mmc/host/via-sdmmc.c b/drivers/mmc/host/via-sdmmc.c
new file mode 100644
index 00000000000..632858a9437
--- /dev/null
+++ b/drivers/mmc/host/via-sdmmc.c
@@ -0,0 +1,1362 @@
+/*
+ * drivers/mmc/host/via-sdmmc.c - VIA SD/MMC Card Reader driver
+ * Copyright (c) 2008, VIA Technologies Inc. All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or (at
+ * your option) any later version.
+ */
+
+#include <linux/pci.h>
+#include <linux/dma-mapping.h>
+#include <linux/highmem.h>
+#include <linux/delay.h>
+
+#include <linux/mmc/host.h>
+
+#define DRV_NAME "via_sdmmc"
+
+#define PCI_DEVICE_ID_VIA_9530 0x9530
+
+#define VIA_CRDR_SDC_OFF 0x200
+#define VIA_CRDR_DDMA_OFF 0x400
+#define VIA_CRDR_PCICTRL_OFF 0x600
+
+#define VIA_CRDR_MIN_CLOCK 375000
+#define VIA_CRDR_MAX_CLOCK 48000000
+
+/*
+ * PCI registers
+ */
+
+#define VIA_CRDR_PCI_WORK_MODE 0x40
+#define VIA_CRDR_PCI_DBG_MODE 0x41
+
+/*
+ * SDC MMIO Registers
+ */
+
+#define VIA_CRDR_SDCTRL 0x0
+#define VIA_CRDR_SDCTRL_START 0x01
+#define VIA_CRDR_SDCTRL_WRITE 0x04
+#define VIA_CRDR_SDCTRL_SINGLE_WR 0x10
+#define VIA_CRDR_SDCTRL_SINGLE_RD 0x20
+#define VIA_CRDR_SDCTRL_MULTI_WR 0x30
+#define VIA_CRDR_SDCTRL_MULTI_RD 0x40
+#define VIA_CRDR_SDCTRL_STOP 0x70
+
+#define VIA_CRDR_SDCTRL_RSP_NONE 0x0
+#define VIA_CRDR_SDCTRL_RSP_R1 0x10000
+#define VIA_CRDR_SDCTRL_RSP_R2 0x20000
+#define VIA_CRDR_SDCTRL_RSP_R3 0x30000
+#define VIA_CRDR_SDCTRL_RSP_R1B 0x90000
+
+#define VIA_CRDR_SDCARG 0x4
+
+#define VIA_CRDR_SDBUSMODE 0x8
+#define VIA_CRDR_SDMODE_4BIT 0x02
+#define VIA_CRDR_SDMODE_CLK_ON 0x40
+
+#define VIA_CRDR_SDBLKLEN 0xc
+/*
+ * Bit 0 -Bit 10 : Block length. So, the maximum block length should be 2048.
+ * Bit 11 - Bit 13 : Reserved.
+ * GPIDET : Select GPI pin to detect card, GPI means CR_CD# in top design.
+ * INTEN : Enable SD host interrupt.
+ * Bit 16 - Bit 31 : Block count. So, the maximun block count should be 65536.
+ */
+#define VIA_CRDR_SDBLKLEN_GPIDET 0x2000
+#define VIA_CRDR_SDBLKLEN_INTEN 0x8000
+#define VIA_CRDR_MAX_BLOCK_COUNT 65536
+#define VIA_CRDR_MAX_BLOCK_LENGTH 2048
+
+#define VIA_CRDR_SDRESP0 0x10
+#define VIA_CRDR_SDRESP1 0x14
+#define VIA_CRDR_SDRESP2 0x18
+#define VIA_CRDR_SDRESP3 0x1c
+
+#define VIA_CRDR_SDCURBLKCNT 0x20
+
+#define VIA_CRDR_SDINTMASK 0x24
+/*
+ * MBDIE : Multiple Blocks transfer Done Interrupt Enable
+ * BDDIE : Block Data transfer Done Interrupt Enable
+ * CIRIE : Card Insertion or Removal Interrupt Enable
+ * CRDIE : Command-Response transfer Done Interrupt Enable
+ * CRTOIE : Command-Response response TimeOut Interrupt Enable
+ * ASCRDIE : Auto Stop Command-Response transfer Done Interrupt Enable
+ * DTIE : Data access Timeout Interrupt Enable
+ * SCIE : reSponse CRC error Interrupt Enable
+ * RCIE : Read data CRC error Interrupt Enable
+ * WCIE : Write data CRC error Interrupt Enable
+ */
+#define VIA_CRDR_SDINTMASK_MBDIE 0x10
+#define VIA_CRDR_SDINTMASK_BDDIE 0x20
+#define VIA_CRDR_SDINTMASK_CIRIE 0x80
+#define VIA_CRDR_SDINTMASK_CRDIE 0x200
+#define VIA_CRDR_SDINTMASK_CRTOIE 0x400
+#define VIA_CRDR_SDINTMASK_ASCRDIE 0x800
+#define VIA_CRDR_SDINTMASK_DTIE 0x1000
+#define VIA_CRDR_SDINTMASK_SCIE 0x2000
+#define VIA_CRDR_SDINTMASK_RCIE 0x4000
+#define VIA_CRDR_SDINTMASK_WCIE 0x8000
+
+#define VIA_CRDR_SDACTIVE_INTMASK \
+ (VIA_CRDR_SDINTMASK_MBDIE | VIA_CRDR_SDINTMASK_CIRIE \
+ | VIA_CRDR_SDINTMASK_CRDIE | VIA_CRDR_SDINTMASK_CRTOIE \
+ | VIA_CRDR_SDINTMASK_DTIE | VIA_CRDR_SDINTMASK_SCIE \
+ | VIA_CRDR_SDINTMASK_RCIE | VIA_CRDR_SDINTMASK_WCIE)
+
+#define VIA_CRDR_SDSTATUS 0x28
+/*
+ * CECC : Reserved
+ * WP : SD card Write Protect status
+ * SLOTD : Reserved
+ * SLOTG : SD SLOT status(Gpi pin status)
+ * MBD : Multiple Blocks transfer Done interrupt status
+ * BDD : Block Data transfer Done interrupt status
+ * CD : Reserved
+ * CIR : Card Insertion or Removal interrupt detected on GPI pin
+ * IO : Reserved
+ * CRD : Command-Response transfer Done interrupt status
+ * CRTO : Command-Response response TimeOut interrupt status
+ * ASCRDIE : Auto Stop Command-Response transfer Done interrupt status
+ * DT : Data access Timeout interrupt status
+ * SC : reSponse CRC error interrupt status
+ * RC : Read data CRC error interrupt status
+ * WC : Write data CRC error interrupt status
+ */
+#define VIA_CRDR_SDSTS_CECC 0x01
+#define VIA_CRDR_SDSTS_WP 0x02
+#define VIA_CRDR_SDSTS_SLOTD 0x04
+#define VIA_CRDR_SDSTS_SLOTG 0x08
+#define VIA_CRDR_SDSTS_MBD 0x10
+#define VIA_CRDR_SDSTS_BDD 0x20
+#define VIA_CRDR_SDSTS_CD 0x40
+#define VIA_CRDR_SDSTS_CIR 0x80
+#define VIA_CRDR_SDSTS_IO 0x100
+#define VIA_CRDR_SDSTS_CRD 0x200
+#define VIA_CRDR_SDSTS_CRTO 0x400
+#define VIA_CRDR_SDSTS_ASCRDIE 0x800
+#define VIA_CRDR_SDSTS_DT 0x1000
+#define VIA_CRDR_SDSTS_SC 0x2000
+#define VIA_CRDR_SDSTS_RC 0x4000
+#define VIA_CRDR_SDSTS_WC 0x8000
+
+#define VIA_CRDR_SDSTS_IGN_MASK\
+ (VIA_CRDR_SDSTS_BDD | VIA_CRDR_SDSTS_ASCRDIE | VIA_CRDR_SDSTS_IO)
+#define VIA_CRDR_SDSTS_INT_MASK \
+ (VIA_CRDR_SDSTS_MBD | VIA_CRDR_SDSTS_BDD | VIA_CRDR_SDSTS_CD \
+ | VIA_CRDR_SDSTS_CIR | VIA_CRDR_SDSTS_IO | VIA_CRDR_SDSTS_CRD \
+ | VIA_CRDR_SDSTS_CRTO | VIA_CRDR_SDSTS_ASCRDIE | VIA_CRDR_SDSTS_DT \
+ | VIA_CRDR_SDSTS_SC | VIA_CRDR_SDSTS_RC | VIA_CRDR_SDSTS_WC)
+#define VIA_CRDR_SDSTS_W1C_MASK \
+ (VIA_CRDR_SDSTS_CECC | VIA_CRDR_SDSTS_MBD | VIA_CRDR_SDSTS_BDD \
+ | VIA_CRDR_SDSTS_CD | VIA_CRDR_SDSTS_CIR | VIA_CRDR_SDSTS_CRD \
+ | VIA_CRDR_SDSTS_CRTO | VIA_CRDR_SDSTS_ASCRDIE | VIA_CRDR_SDSTS_DT \
+ | VIA_CRDR_SDSTS_SC | VIA_CRDR_SDSTS_RC | VIA_CRDR_SDSTS_WC)
+#define VIA_CRDR_SDSTS_CMD_MASK \
+ (VIA_CRDR_SDSTS_CRD | VIA_CRDR_SDSTS_CRTO | VIA_CRDR_SDSTS_SC)
+#define VIA_CRDR_SDSTS_DATA_MASK\
+ (VIA_CRDR_SDSTS_MBD | VIA_CRDR_SDSTS_DT \
+ | VIA_CRDR_SDSTS_RC | VIA_CRDR_SDSTS_WC)
+
+#define VIA_CRDR_SDSTATUS2 0x2a
+/*
+ * CFE : Enable SD host automatic Clock FReezing
+ */
+#define VIA_CRDR_SDSTS_CFE 0x80
+
+#define VIA_CRDR_SDRSPTMO 0x2C
+
+#define VIA_CRDR_SDCLKSEL 0x30
+
+#define VIA_CRDR_SDEXTCTRL 0x34
+#define VIS_CRDR_SDEXTCTRL_AUTOSTOP_SD 0x01
+#define VIS_CRDR_SDEXTCTRL_SHIFT_9 0x02
+#define VIS_CRDR_SDEXTCTRL_MMC_8BIT 0x04
+#define VIS_CRDR_SDEXTCTRL_RELD_BLK 0x08
+#define VIS_CRDR_SDEXTCTRL_BAD_CMDA 0x10
+#define VIS_CRDR_SDEXTCTRL_BAD_DATA 0x20
+#define VIS_CRDR_SDEXTCTRL_AUTOSTOP_SPI 0x40
+#define VIA_CRDR_SDEXTCTRL_HISPD 0x80
+/* 0x38-0xFF reserved */
+
+/*
+ * Data DMA Control Registers
+ */
+
+#define VIA_CRDR_DMABASEADD 0x0
+#define VIA_CRDR_DMACOUNTER 0x4
+
+#define VIA_CRDR_DMACTRL 0x8
+/*
+ * DIR :Transaction Direction
+ * 0 : From card to memory
+ * 1 : From memory to card
+ */
+#define VIA_CRDR_DMACTRL_DIR 0x100
+#define VIA_CRDR_DMACTRL_ENIRQ 0x10000
+#define VIA_CRDR_DMACTRL_SFTRST 0x1000000
+
+#define VIA_CRDR_DMASTS 0xc
+
+#define VIA_CRDR_DMASTART 0x10
+/*0x14-0xFF reserved*/
+
+/*
+ * PCI Control Registers
+ */
+
+/*0x0 - 0x1 reserved*/
+#define VIA_CRDR_PCICLKGATT 0x2
+/*
+ * SFTRST :
+ * 0 : Soft reset all the controller and it will be de-asserted automatically
+ * 1 : Soft reset is de-asserted
+ */
+#define VIA_CRDR_PCICLKGATT_SFTRST 0x01
+/*
+ * 3V3 : Pad power select
+ * 0 : 1.8V
+ * 1 : 3.3V
+ * NOTE : No mater what the actual value should be, this bit always
+ * read as 0. This is a hardware bug.
+ */
+#define VIA_CRDR_PCICLKGATT_3V3 0x10
+/*
+ * PAD_PWRON : Pad Power on/off select
+ * 0 : Power off
+ * 1 : Power on
+ * NOTE : No mater what the actual value should be, this bit always
+ * read as 0. This is a hardware bug.
+ */
+#define VIA_CRDR_PCICLKGATT_PAD_PWRON 0x20
+
+#define VIA_CRDR_PCISDCCLK 0x5
+
+#define VIA_CRDR_PCIDMACLK 0x7
+#define VIA_CRDR_PCIDMACLK_SDC 0x2
+
+#define VIA_CRDR_PCIINTCTRL 0x8
+#define VIA_CRDR_PCIINTCTRL_SDCIRQEN 0x04
+
+#define VIA_CRDR_PCIINTSTATUS 0x9
+#define VIA_CRDR_PCIINTSTATUS_SDC 0x04
+
+#define VIA_CRDR_PCITMOCTRL 0xa
+#define VIA_CRDR_PCITMOCTRL_NO 0x0
+#define VIA_CRDR_PCITMOCTRL_32US 0x1
+#define VIA_CRDR_PCITMOCTRL_256US 0x2
+#define VIA_CRDR_PCITMOCTRL_1024US 0x3
+#define VIA_CRDR_PCITMOCTRL_256MS 0x4
+#define VIA_CRDR_PCITMOCTRL_512MS 0x5
+#define VIA_CRDR_PCITMOCTRL_1024MS 0x6
+
+/*0xB-0xFF reserved*/
+
+enum PCI_HOST_CLK_CONTROL {
+ PCI_CLK_375K = 0x03,
+ PCI_CLK_8M = 0x04,
+ PCI_CLK_12M = 0x00,
+ PCI_CLK_16M = 0x05,
+ PCI_CLK_24M = 0x01,
+ PCI_CLK_33M = 0x06,
+ PCI_CLK_48M = 0x02
+};
+
+struct sdhcreg {
+ u32 sdcontrol_reg;
+ u32 sdcmdarg_reg;
+ u32 sdbusmode_reg;
+ u32 sdblklen_reg;
+ u32 sdresp_reg[4];
+ u32 sdcurblkcnt_reg;
+ u32 sdintmask_reg;
+ u32 sdstatus_reg;
+ u32 sdrsptmo_reg;
+ u32 sdclksel_reg;
+ u32 sdextctrl_reg;
+};
+
+struct pcictrlreg {
+ u8 reserve[2];
+ u8 pciclkgat_reg;
+ u8 pcinfcclk_reg;
+ u8 pcimscclk_reg;
+ u8 pcisdclk_reg;
+ u8 pcicaclk_reg;
+ u8 pcidmaclk_reg;
+ u8 pciintctrl_reg;
+ u8 pciintstatus_reg;
+ u8 pcitmoctrl_reg;
+ u8 Resv;
+};
+
+struct via_crdr_mmc_host {
+ struct mmc_host *mmc;
+ struct mmc_request *mrq;
+ struct mmc_command *cmd;
+ struct mmc_data *data;
+
+ void __iomem *mmiobase;
+ void __iomem *sdhc_mmiobase;
+ void __iomem *ddma_mmiobase;
+ void __iomem *pcictrl_mmiobase;
+
+ struct pcictrlreg pm_pcictrl_reg;
+ struct sdhcreg pm_sdhc_reg;
+
+ struct work_struct carddet_work;
+ struct tasklet_struct finish_tasklet;
+
+ struct timer_list timer;
+ spinlock_t lock;
+ u8 power;
+ int reject;
+ unsigned int quirks;
+};
+
+/* some devices need a very long delay for power to stabilize */
+#define VIA_CRDR_QUIRK_300MS_PWRDELAY 0x0001
+
+static struct pci_device_id via_ids[] = {
+ {PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_9530,
+ PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0,},
+ {0,}
+};
+
+MODULE_DEVICE_TABLE(pci, via_ids);
+
+static void via_print_sdchc(struct via_crdr_mmc_host *host)
+{
+ void __iomem *addrbase = host->sdhc_mmiobase;
+
+ pr_debug("SDC MMIO Registers:\n");
+ pr_debug("SDCONTROL=%08x, SDCMDARG=%08x, SDBUSMODE=%08x\n",
+ readl(addrbase + VIA_CRDR_SDCTRL),
+ readl(addrbase + VIA_CRDR_SDCARG),
+ readl(addrbase + VIA_CRDR_SDBUSMODE));
+ pr_debug("SDBLKLEN=%08x, SDCURBLKCNT=%08x, SDINTMASK=%08x\n",
+ readl(addrbase + VIA_CRDR_SDBLKLEN),
+ readl(addrbase + VIA_CRDR_SDCURBLKCNT),
+ readl(addrbase + VIA_CRDR_SDINTMASK));
+ pr_debug("SDSTATUS=%08x, SDCLKSEL=%08x, SDEXTCTRL=%08x\n",
+ readl(addrbase + VIA_CRDR_SDSTATUS),
+ readl(addrbase + VIA_CRDR_SDCLKSEL),
+ readl(addrbase + VIA_CRDR_SDEXTCTRL));
+}
+
+static void via_print_pcictrl(struct via_crdr_mmc_host *host)
+{
+ void __iomem *addrbase = host->pcictrl_mmiobase;
+
+ pr_debug("PCI Control Registers:\n");
+ pr_debug("PCICLKGATT=%02x, PCISDCCLK=%02x, PCIDMACLK=%02x\n",
+ readb(addrbase + VIA_CRDR_PCICLKGATT),
+ readb(addrbase + VIA_CRDR_PCISDCCLK),
+ readb(addrbase + VIA_CRDR_PCIDMACLK));
+ pr_debug("PCIINTCTRL=%02x, PCIINTSTATUS=%02x\n",
+ readb(addrbase + VIA_CRDR_PCIINTCTRL),
+ readb(addrbase + VIA_CRDR_PCIINTSTATUS));
+}
+
+static void via_save_pcictrlreg(struct via_crdr_mmc_host *host)
+{
+ struct pcictrlreg *pm_pcictrl_reg;
+ void __iomem *addrbase;
+
+ pm_pcictrl_reg = &(host->pm_pcictrl_reg);
+ addrbase = host->pcictrl_mmiobase;
+
+ pm_pcictrl_reg->pciclkgat_reg = readb(addrbase + VIA_CRDR_PCICLKGATT);
+ pm_pcictrl_reg->pciclkgat_reg |=
+ VIA_CRDR_PCICLKGATT_3V3 | VIA_CRDR_PCICLKGATT_PAD_PWRON;
+ pm_pcictrl_reg->pcisdclk_reg = readb(addrbase + VIA_CRDR_PCISDCCLK);
+ pm_pcictrl_reg->pcidmaclk_reg = readb(addrbase + VIA_CRDR_PCIDMACLK);
+ pm_pcictrl_reg->pciintctrl_reg = readb(addrbase + VIA_CRDR_PCIINTCTRL);
+ pm_pcictrl_reg->pciintstatus_reg =
+ readb(addrbase + VIA_CRDR_PCIINTSTATUS);
+ pm_pcictrl_reg->pcitmoctrl_reg = readb(addrbase + VIA_CRDR_PCITMOCTRL);
+}
+
+static void via_restore_pcictrlreg(struct via_crdr_mmc_host *host)
+{
+ struct pcictrlreg *pm_pcictrl_reg;
+ void __iomem *addrbase;
+
+ pm_pcictrl_reg = &(host->pm_pcictrl_reg);
+ addrbase = host->pcictrl_mmiobase;
+
+ writeb(pm_pcictrl_reg->pciclkgat_reg, addrbase + VIA_CRDR_PCICLKGATT);
+ writeb(pm_pcictrl_reg->pcisdclk_reg, addrbase + VIA_CRDR_PCISDCCLK);
+ writeb(pm_pcictrl_reg->pcidmaclk_reg, addrbase + VIA_CRDR_PCIDMACLK);
+ writeb(pm_pcictrl_reg->pciintctrl_reg, addrbase + VIA_CRDR_PCIINTCTRL);
+ writeb(pm_pcictrl_reg->pciintstatus_reg,
+ addrbase + VIA_CRDR_PCIINTSTATUS);
+ writeb(pm_pcictrl_reg->pcitmoctrl_reg, addrbase + VIA_CRDR_PCITMOCTRL);
+}
+
+static void via_save_sdcreg(struct via_crdr_mmc_host *host)
+{
+ struct sdhcreg *pm_sdhc_reg;
+ void __iomem *addrbase;
+
+ pm_sdhc_reg = &(host->pm_sdhc_reg);
+ addrbase = host->sdhc_mmiobase;
+
+ pm_sdhc_reg->sdcontrol_reg = readl(addrbase + VIA_CRDR_SDCTRL);
+ pm_sdhc_reg->sdcmdarg_reg = readl(addrbase + VIA_CRDR_SDCARG);
+ pm_sdhc_reg->sdbusmode_reg = readl(addrbase + VIA_CRDR_SDBUSMODE);
+ pm_sdhc_reg->sdblklen_reg = readl(addrbase + VIA_CRDR_SDBLKLEN);
+ pm_sdhc_reg->sdcurblkcnt_reg = readl(addrbase + VIA_CRDR_SDCURBLKCNT);
+ pm_sdhc_reg->sdintmask_reg = readl(addrbase + VIA_CRDR_SDINTMASK);
+ pm_sdhc_reg->sdstatus_reg = readl(addrbase + VIA_CRDR_SDSTATUS);
+ pm_sdhc_reg->sdrsptmo_reg = readl(addrbase + VIA_CRDR_SDRSPTMO);
+ pm_sdhc_reg->sdclksel_reg = readl(addrbase + VIA_CRDR_SDCLKSEL);
+ pm_sdhc_reg->sdextctrl_reg = readl(addrbase + VIA_CRDR_SDEXTCTRL);
+}
+
+static void via_restore_sdcreg(struct via_crdr_mmc_host *host)
+{
+ struct sdhcreg *pm_sdhc_reg;
+ void __iomem *addrbase;
+
+ pm_sdhc_reg = &(host->pm_sdhc_reg);
+ addrbase = host->sdhc_mmiobase;
+
+ writel(pm_sdhc_reg->sdcontrol_reg, addrbase + VIA_CRDR_SDCTRL);
+ writel(pm_sdhc_reg->sdcmdarg_reg, addrbase + VIA_CRDR_SDCARG);
+ writel(pm_sdhc_reg->sdbusmode_reg, addrbase + VIA_CRDR_SDBUSMODE);
+ writel(pm_sdhc_reg->sdblklen_reg, addrbase + VIA_CRDR_SDBLKLEN);
+ writel(pm_sdhc_reg->sdcurblkcnt_reg, addrbase + VIA_CRDR_SDCURBLKCNT);
+ writel(pm_sdhc_reg->sdintmask_reg, addrbase + VIA_CRDR_SDINTMASK);
+ writel(pm_sdhc_reg->sdstatus_reg, addrbase + VIA_CRDR_SDSTATUS);
+ writel(pm_sdhc_reg->sdrsptmo_reg, addrbase + VIA_CRDR_SDRSPTMO);
+ writel(pm_sdhc_reg->sdclksel_reg, addrbase + VIA_CRDR_SDCLKSEL);
+ writel(pm_sdhc_reg->sdextctrl_reg, addrbase + VIA_CRDR_SDEXTCTRL);
+}
+
+static void via_pwron_sleep(struct via_crdr_mmc_host *sdhost)
+{
+ if (sdhost->quirks & VIA_CRDR_QUIRK_300MS_PWRDELAY)
+ msleep(300);
+ else
+ msleep(3);
+}
+
+static void via_set_ddma(struct via_crdr_mmc_host *host,
+ dma_addr_t dmaaddr, u32 count, int dir, int enirq)
+{
+ void __iomem *addrbase;
+ u32 ctrl_data = 0;
+
+ if (enirq)
+ ctrl_data |= VIA_CRDR_DMACTRL_ENIRQ;
+
+ if (dir)
+ ctrl_data |= VIA_CRDR_DMACTRL_DIR;
+
+ addrbase = host->ddma_mmiobase;
+
+ writel(dmaaddr, addrbase + VIA_CRDR_DMABASEADD);
+ writel(count, addrbase + VIA_CRDR_DMACOUNTER);
+ writel(ctrl_data, addrbase + VIA_CRDR_DMACTRL);
+ writel(0x01, addrbase + VIA_CRDR_DMASTART);
+
+ /* It seems that our DMA can not work normally with 375kHz clock */
+ /* FIXME: don't brute-force 8MHz but use PIO at 375kHz !! */
+ addrbase = host->pcictrl_mmiobase;
+ if (readb(addrbase + VIA_CRDR_PCISDCCLK) == PCI_CLK_375K) {
+ dev_info(host->mmc->parent, "forcing card speed to 8MHz\n");
+ writeb(PCI_CLK_8M, addrbase + VIA_CRDR_PCISDCCLK);
+ }
+}
+
+static void via_sdc_preparedata(struct via_crdr_mmc_host *host,
+ struct mmc_data *data)
+{
+ void __iomem *addrbase;
+ u32 blk_reg;
+ int count;
+
+ WARN_ON(host->data);
+
+ /* Sanity checks */
+ BUG_ON(data->blksz > host->mmc->max_blk_size);
+ BUG_ON(data->blocks > host->mmc->max_blk_count);
+
+ host->data = data;
+
+ count = dma_map_sg(mmc_dev(host->mmc), data->sg, data->sg_len,
+ ((data->flags & MMC_DATA_READ) ?
+ PCI_DMA_FROMDEVICE : PCI_DMA_TODEVICE));
+ BUG_ON(count != 1);
+
+ via_set_ddma(host, sg_dma_address(data->sg), sg_dma_len(data->sg),
+ (data->flags & MMC_DATA_WRITE) ? 1 : 0, 1);
+
+ addrbase = host->sdhc_mmiobase;
+
+ blk_reg = data->blksz - 1;
+ blk_reg |= VIA_CRDR_SDBLKLEN_GPIDET | VIA_CRDR_SDBLKLEN_INTEN;
+ blk_reg |= (data->blocks) << 16;
+
+ writel(blk_reg, addrbase + VIA_CRDR_SDBLKLEN);
+}
+
+static void via_sdc_get_response(struct via_crdr_mmc_host *host,
+ struct mmc_command *cmd)
+{
+ void __iomem *addrbase = host->sdhc_mmiobase;
+ u32 dwdata0 = readl(addrbase + VIA_CRDR_SDRESP0);
+ u32 dwdata1 = readl(addrbase + VIA_CRDR_SDRESP1);
+ u32 dwdata2 = readl(addrbase + VIA_CRDR_SDRESP2);
+ u32 dwdata3 = readl(addrbase + VIA_CRDR_SDRESP3);
+
+ if (cmd->flags & MMC_RSP_136) {
+ cmd->resp[0] = ((u8) (dwdata1)) |
+ (((u8) (dwdata0 >> 24)) << 8) |
+ (((u8) (dwdata0 >> 16)) << 16) |
+ (((u8) (dwdata0 >> 8)) << 24);
+
+ cmd->resp[1] = ((u8) (dwdata2)) |
+ (((u8) (dwdata1 >> 24)) << 8) |
+ (((u8) (dwdata1 >> 16)) << 16) |
+ (((u8) (dwdata1 >> 8)) << 24);
+
+ cmd->resp[2] = ((u8) (dwdata3)) |
+ (((u8) (dwdata2 >> 24)) << 8) |
+ (((u8) (dwdata2 >> 16)) << 16) |
+ (((u8) (dwdata2 >> 8)) << 24);
+
+ cmd->resp[3] = 0xff |
+ ((((u8) (dwdata3 >> 24))) << 8) |
+ (((u8) (dwdata3 >> 16)) << 16) |
+ (((u8) (dwdata3 >> 8)) << 24);
+ } else {
+ dwdata0 >>= 8;
+ cmd->resp[0] = ((dwdata0 & 0xff) << 24) |
+ (((dwdata0 >> 8) & 0xff) << 16) |
+ (((dwdata0 >> 16) & 0xff) << 8) | (dwdata1 & 0xff);
+
+ dwdata1 >>= 8;
+ cmd->resp[1] = ((dwdata1 & 0xff) << 24) |
+ (((dwdata1 >> 8) & 0xff) << 16) |
+ (((dwdata1 >> 16) & 0xff) << 8);
+ }
+}
+
+static void via_sdc_send_command(struct via_crdr_mmc_host *host,
+ struct mmc_command *cmd)
+{
+ void __iomem *addrbase;
+ struct mmc_data *data;
+ u32 cmdctrl = 0;
+
+ WARN_ON(host->cmd);
+
+ data = cmd->data;
+ mod_timer(&host->timer, jiffies + HZ);
+ host->cmd = cmd;
+
+ /*Command index*/
+ cmdctrl = cmd->opcode << 8;
+
+ /*Response type*/
+ switch (mmc_resp_type(cmd)) {
+ case MMC_RSP_NONE:
+ cmdctrl |= VIA_CRDR_SDCTRL_RSP_NONE;
+ break;
+ case MMC_RSP_R1:
+ cmdctrl |= VIA_CRDR_SDCTRL_RSP_R1;
+ break;
+ case MMC_RSP_R1B:
+ cmdctrl |= VIA_CRDR_SDCTRL_RSP_R1B;
+ break;
+ case MMC_RSP_R2:
+ cmdctrl |= VIA_CRDR_SDCTRL_RSP_R2;
+ break;
+ case MMC_RSP_R3:
+ cmdctrl |= VIA_CRDR_SDCTRL_RSP_R3;
+ break;
+ default:
+ pr_err("%s: cmd->flag is not valid\n", mmc_hostname(host->mmc));
+ break;
+ }
+
+ if (!(cmd->data))
+ goto nodata;
+
+ via_sdc_preparedata(host, data);
+
+ /*Command control*/
+ if (data->blocks > 1) {
+ if (data->flags & MMC_DATA_WRITE) {
+ cmdctrl |= VIA_CRDR_SDCTRL_WRITE;
+ cmdctrl |= VIA_CRDR_SDCTRL_MULTI_WR;
+ } else {
+ cmdctrl |= VIA_CRDR_SDCTRL_MULTI_RD;
+ }
+ } else {
+ if (data->flags & MMC_DATA_WRITE) {
+ cmdctrl |= VIA_CRDR_SDCTRL_WRITE;
+ cmdctrl |= VIA_CRDR_SDCTRL_SINGLE_WR;
+ } else {
+ cmdctrl |= VIA_CRDR_SDCTRL_SINGLE_RD;
+ }
+ }
+
+nodata:
+ if (cmd == host->mrq->stop)
+ cmdctrl |= VIA_CRDR_SDCTRL_STOP;
+
+ cmdctrl |= VIA_CRDR_SDCTRL_START;
+
+ addrbase = host->sdhc_mmiobase;
+ writel(cmd->arg, addrbase + VIA_CRDR_SDCARG);
+ writel(cmdctrl, addrbase + VIA_CRDR_SDCTRL);
+}
+
+static void via_sdc_finish_data(struct via_crdr_mmc_host *host)
+{
+ struct mmc_data *data;
+
+ BUG_ON(!host->data);
+
+ data = host->data;
+ host->data = NULL;
+
+ if (data->error)
+ data->bytes_xfered = 0;
+ else
+ data->bytes_xfered = data->blocks * data->blksz;
+
+ dma_unmap_sg(mmc_dev(host->mmc), data->sg, data->sg_len,
+ ((data->flags & MMC_DATA_READ) ?
+ PCI_DMA_FROMDEVICE : PCI_DMA_TODEVICE));
+
+ if (data->stop)
+ via_sdc_send_command(host, data->stop);
+ else
+ tasklet_schedule(&host->finish_tasklet);
+}
+
+static void via_sdc_finish_command(struct via_crdr_mmc_host *host)
+{
+ via_sdc_get_response(host, host->cmd);
+
+ host->cmd->error = 0;
+
+ if (!host->cmd->data)
+ tasklet_schedule(&host->finish_tasklet);
+
+ host->cmd = NULL;
+}
+
+static void via_sdc_request(struct mmc_host *mmc, struct mmc_request *mrq)
+{
+ void __iomem *addrbase;
+ struct via_crdr_mmc_host *host;
+ unsigned long flags;
+ u16 status;
+
+ host = mmc_priv(mmc);
+
+ spin_lock_irqsave(&host->lock, flags);
+
+ addrbase = host->pcictrl_mmiobase;
+ writeb(VIA_CRDR_PCIDMACLK_SDC, addrbase + VIA_CRDR_PCIDMACLK);
+
+ status = readw(host->sdhc_mmiobase + VIA_CRDR_SDSTATUS);
+ status &= VIA_CRDR_SDSTS_W1C_MASK;
+ writew(status, host->sdhc_mmiobase + VIA_CRDR_SDSTATUS);
+
+ WARN_ON(host->mrq != NULL);
+ host->mrq = mrq;
+
+ status = readw(host->sdhc_mmiobase + VIA_CRDR_SDSTATUS);
+ if (!(status & VIA_CRDR_SDSTS_SLOTG) || host->reject) {
+ host->mrq->cmd->error = -ENOMEDIUM;
+ tasklet_schedule(&host->finish_tasklet);
+ } else {
+ via_sdc_send_command(host, mrq->cmd);
+ }
+
+ mmiowb();
+ spin_unlock_irqrestore(&host->lock, flags);
+}
+
+static void via_sdc_set_power(struct via_crdr_mmc_host *host,
+ unsigned short power, unsigned int on)
+{
+ unsigned long flags;
+ u8 gatt;
+
+ spin_lock_irqsave(&host->lock, flags);
+
+ host->power = (1 << power);
+
+ gatt = readb(host->pcictrl_mmiobase + VIA_CRDR_PCICLKGATT);
+ if (host->power == MMC_VDD_165_195)
+ gatt &= ~VIA_CRDR_PCICLKGATT_3V3;
+ else
+ gatt |= VIA_CRDR_PCICLKGATT_3V3;
+ if (on)
+ gatt |= VIA_CRDR_PCICLKGATT_PAD_PWRON;
+ else
+ gatt &= ~VIA_CRDR_PCICLKGATT_PAD_PWRON;
+ writeb(gatt, host->pcictrl_mmiobase + VIA_CRDR_PCICLKGATT);
+
+ mmiowb();
+ spin_unlock_irqrestore(&host->lock, flags);
+
+ via_pwron_sleep(host);
+}
+
+static void via_sdc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
+{
+ struct via_crdr_mmc_host *host;
+ unsigned long flags;
+ void __iomem *addrbase;
+ u32 org_data, sdextctrl;
+ u8 clock;
+
+ host = mmc_priv(mmc);
+
+ spin_lock_irqsave(&host->lock, flags);
+
+ addrbase = host->sdhc_mmiobase;
+ org_data = readl(addrbase + VIA_CRDR_SDBUSMODE);
+ sdextctrl = readl(addrbase + VIA_CRDR_SDEXTCTRL);
+
+ if (ios->bus_width == MMC_BUS_WIDTH_1)
+ org_data &= ~VIA_CRDR_SDMODE_4BIT;
+ else
+ org_data |= VIA_CRDR_SDMODE_4BIT;
+
+ if (ios->power_mode == MMC_POWER_OFF)
+ org_data &= ~VIA_CRDR_SDMODE_CLK_ON;
+ else
+ org_data |= VIA_CRDR_SDMODE_CLK_ON;
+
+ if (ios->timing == MMC_TIMING_SD_HS)
+ sdextctrl |= VIA_CRDR_SDEXTCTRL_HISPD;
+ else
+ sdextctrl &= ~VIA_CRDR_SDEXTCTRL_HISPD;
+
+ writel(org_data, addrbase + VIA_CRDR_SDBUSMODE);
+ writel(sdextctrl, addrbase + VIA_CRDR_SDEXTCTRL);
+
+ if (ios->clock >= 48000000)
+ clock = PCI_CLK_48M;
+ else if (ios->clock >= 33000000)
+ clock = PCI_CLK_33M;
+ else if (ios->clock >= 24000000)
+ clock = PCI_CLK_24M;
+ else if (ios->clock >= 16000000)
+ clock = PCI_CLK_16M;
+ else if (ios->clock >= 12000000)
+ clock = PCI_CLK_12M;
+ else if (ios->clock >= 8000000)
+ clock = PCI_CLK_8M;
+ else
+ clock = PCI_CLK_375K;
+
+ addrbase = host->pcictrl_mmiobase;
+ if (readb(addrbase + VIA_CRDR_PCISDCCLK) != clock)
+ writeb(clock, addrbase + VIA_CRDR_PCISDCCLK);
+
+ mmiowb();
+ spin_unlock_irqrestore(&host->lock, flags);
+
+ if (ios->power_mode != MMC_POWER_OFF)
+ via_sdc_set_power(host, ios->vdd, 1);
+ else
+ via_sdc_set_power(host, ios->vdd, 0);
+}
+
+static int via_sdc_get_ro(struct mmc_host *mmc)
+{
+ struct via_crdr_mmc_host *host;
+ unsigned long flags;
+ u16 status;
+
+ host = mmc_priv(mmc);
+
+ spin_lock_irqsave(&host->lock, flags);
+
+ status = readw(host->sdhc_mmiobase + VIA_CRDR_SDSTATUS);
+
+ spin_unlock_irqrestore(&host->lock, flags);
+
+ return !(status & VIA_CRDR_SDSTS_WP);
+}
+
+static const struct mmc_host_ops via_sdc_ops = {
+ .request = via_sdc_request,
+ .set_ios = via_sdc_set_ios,
+ .get_ro = via_sdc_get_ro,
+};
+
+static void via_reset_pcictrl(struct via_crdr_mmc_host *host)
+{
+ void __iomem *addrbase;
+ unsigned long flags;
+ u8 gatt;
+
+ addrbase = host->pcictrl_mmiobase;
+
+ spin_lock_irqsave(&host->lock, flags);
+
+ via_save_pcictrlreg(host);
+ via_save_sdcreg(host);
+
+ spin_unlock_irqrestore(&host->lock, flags);
+
+ gatt = VIA_CRDR_PCICLKGATT_PAD_PWRON;
+ if (host->power == MMC_VDD_165_195)
+ gatt &= VIA_CRDR_PCICLKGATT_3V3;
+ else
+ gatt |= VIA_CRDR_PCICLKGATT_3V3;
+ writeb(gatt, host->pcictrl_mmiobase + VIA_CRDR_PCICLKGATT);
+ via_pwron_sleep(host);
+ gatt |= VIA_CRDR_PCICLKGATT_SFTRST;
+ writeb(gatt, host->pcictrl_mmiobase + VIA_CRDR_PCICLKGATT);
+ msleep(3);
+
+ spin_lock_irqsave(&host->lock, flags);
+
+ via_restore_pcictrlreg(host);
+ via_restore_sdcreg(host);
+
+ mmiowb();
+ spin_unlock_irqrestore(&host->lock, flags);
+}
+
+static void via_sdc_cmd_isr(struct via_crdr_mmc_host *host, u16 intmask)
+{
+ BUG_ON(intmask == 0);
+
+ if (!host->cmd) {
+ pr_err("%s: Got command interrupt 0x%x even "
+ "though no command operation was in progress.\n",
+ mmc_hostname(host->mmc), intmask);
+ return;
+ }
+
+ if (intmask & VIA_CRDR_SDSTS_CRTO)
+ host->cmd->error = -ETIMEDOUT;
+ else if (intmask & VIA_CRDR_SDSTS_SC)
+ host->cmd->error = -EILSEQ;
+
+ if (host->cmd->error)
+ tasklet_schedule(&host->finish_tasklet);
+ else if (intmask & VIA_CRDR_SDSTS_CRD)
+ via_sdc_finish_command(host);
+}
+
+static void via_sdc_data_isr(struct via_crdr_mmc_host *host, u16 intmask)
+{
+ BUG_ON(intmask == 0);
+
+ if (intmask & VIA_CRDR_SDSTS_DT)
+ host->data->error = -ETIMEDOUT;
+ else if (intmask & (VIA_CRDR_SDSTS_RC | VIA_CRDR_SDSTS_WC))
+ host->data->error = -EILSEQ;
+
+ via_sdc_finish_data(host);
+}
+
+static irqreturn_t via_sdc_isr(int irq, void *dev_id)
+{
+ struct via_crdr_mmc_host *sdhost = dev_id;
+ void __iomem *addrbase;
+ u8 pci_status;
+ u16 sd_status;
+ irqreturn_t result;
+
+ if (!sdhost)
+ return IRQ_NONE;
+
+ spin_lock(&sdhost->lock);
+
+ addrbase = sdhost->pcictrl_mmiobase;
+ pci_status = readb(addrbase + VIA_CRDR_PCIINTSTATUS);
+ if (!(pci_status & VIA_CRDR_PCIINTSTATUS_SDC)) {
+ result = IRQ_NONE;
+ goto out;
+ }
+
+ addrbase = sdhost->sdhc_mmiobase;
+ sd_status = readw(addrbase + VIA_CRDR_SDSTATUS);
+ sd_status &= VIA_CRDR_SDSTS_INT_MASK;
+ sd_status &= ~VIA_CRDR_SDSTS_IGN_MASK;
+ if (!sd_status) {
+ result = IRQ_NONE;
+ goto out;
+ }
+
+ if (sd_status & VIA_CRDR_SDSTS_CIR) {
+ writew(sd_status & VIA_CRDR_SDSTS_CIR,
+ addrbase + VIA_CRDR_SDSTATUS);
+
+ schedule_work(&sdhost->carddet_work);
+ }
+
+ sd_status &= ~VIA_CRDR_SDSTS_CIR;
+ if (sd_status & VIA_CRDR_SDSTS_CMD_MASK) {
+ writew(sd_status & VIA_CRDR_SDSTS_CMD_MASK,
+ addrbase + VIA_CRDR_SDSTATUS);
+ via_sdc_cmd_isr(sdhost, sd_status & VIA_CRDR_SDSTS_CMD_MASK);
+ }
+ if (sd_status & VIA_CRDR_SDSTS_DATA_MASK) {
+ writew(sd_status & VIA_CRDR_SDSTS_DATA_MASK,
+ addrbase + VIA_CRDR_SDSTATUS);
+ via_sdc_data_isr(sdhost, sd_status & VIA_CRDR_SDSTS_DATA_MASK);
+ }
+
+ sd_status &= ~(VIA_CRDR_SDSTS_CMD_MASK | VIA_CRDR_SDSTS_DATA_MASK);
+ if (sd_status) {
+ pr_err("%s: Unexpected interrupt 0x%x\n",
+ mmc_hostname(sdhost->mmc), sd_status);
+ writew(sd_status, addrbase + VIA_CRDR_SDSTATUS);
+ }
+
+ result = IRQ_HANDLED;
+
+ mmiowb();
+out:
+ spin_unlock(&sdhost->lock);
+
+ return result;
+}
+
+static void via_sdc_timeout(unsigned long ulongdata)
+{
+ struct via_crdr_mmc_host *sdhost;
+ unsigned long flags;
+
+ sdhost = (struct via_crdr_mmc_host *)ulongdata;
+
+ spin_lock_irqsave(&sdhost->lock, flags);
+
+ if (sdhost->mrq) {
+ pr_err("%s: Timeout waiting for hardware interrupt."
+ "cmd:0x%x\n", mmc_hostname(sdhost->mmc),
+ sdhost->mrq->cmd->opcode);
+
+ if (sdhost->data) {
+ writel(VIA_CRDR_DMACTRL_SFTRST,
+ sdhost->ddma_mmiobase + VIA_CRDR_DMACTRL);
+ sdhost->data->error = -ETIMEDOUT;
+ via_sdc_finish_data(sdhost);
+ } else {
+ if (sdhost->cmd)
+ sdhost->cmd->error = -ETIMEDOUT;
+ else
+ sdhost->mrq->cmd->error = -ETIMEDOUT;
+ tasklet_schedule(&sdhost->finish_tasklet);
+ }
+ }
+
+ mmiowb();
+ spin_unlock_irqrestore(&sdhost->lock, flags);
+}
+
+static void via_sdc_tasklet_finish(unsigned long param)
+{
+ struct via_crdr_mmc_host *host;
+ unsigned long flags;
+ struct mmc_request *mrq;
+
+ host = (struct via_crdr_mmc_host *)param;
+
+ spin_lock_irqsave(&host->lock, flags);
+
+ del_timer(&host->timer);
+ mrq = host->mrq;
+ host->mrq = NULL;
+ host->cmd = NULL;
+ host->data = NULL;
+
+ spin_unlock_irqrestore(&host->lock, flags);
+
+ mmc_request_done(host->mmc, mrq);
+}
+
+static void via_sdc_card_detect(struct work_struct *work)
+{
+ struct via_crdr_mmc_host *host;
+ void __iomem *addrbase;
+ unsigned long flags;
+ u16 status;
+
+ host = container_of(work, struct via_crdr_mmc_host, carddet_work);
+
+ addrbase = host->ddma_mmiobase;
+ writel(VIA_CRDR_DMACTRL_SFTRST, addrbase + VIA_CRDR_DMACTRL);
+
+ spin_lock_irqsave(&host->lock, flags);
+
+ addrbase = host->pcictrl_mmiobase;
+ writeb(VIA_CRDR_PCIDMACLK_SDC, addrbase + VIA_CRDR_PCIDMACLK);
+
+ addrbase = host->sdhc_mmiobase;
+ status = readw(addrbase + VIA_CRDR_SDSTATUS);
+ if (!(status & VIA_CRDR_SDSTS_SLOTG)) {
+ if (host->mrq) {
+ pr_err("%s: Card removed during transfer!\n",
+ mmc_hostname(host->mmc));
+ host->mrq->cmd->error = -ENOMEDIUM;
+ tasklet_schedule(&host->finish_tasklet);
+ }
+
+ mmiowb();
+ spin_unlock_irqrestore(&host->lock, flags);
+
+ via_reset_pcictrl(host);
+
+ spin_lock_irqsave(&host->lock, flags);
+ }
+
+ mmiowb();
+ spin_unlock_irqrestore(&host->lock, flags);
+
+ via_print_pcictrl(host);
+ via_print_sdchc(host);
+
+ mmc_detect_change(host->mmc, msecs_to_jiffies(500));
+}
+
+static void via_init_mmc_host(struct via_crdr_mmc_host *host)
+{
+ struct mmc_host *mmc = host->mmc;
+ void __iomem *addrbase;
+ u32 lenreg;
+ u32 status;
+
+ init_timer(&host->timer);
+ host->timer.data = (unsigned long)host;
+ host->timer.function = via_sdc_timeout;
+
+ spin_lock_init(&host->lock);
+
+ mmc->f_min = VIA_CRDR_MIN_CLOCK;
+ mmc->f_max = VIA_CRDR_MAX_CLOCK;
+ mmc->ocr_avail = MMC_VDD_32_33 | MMC_VDD_33_34 | MMC_VDD_165_195;
+ mmc->caps = MMC_CAP_4_BIT_DATA | MMC_CAP_SD_HIGHSPEED;
+ mmc->ops = &via_sdc_ops;
+
+ /*Hardware cannot do scatter lists*/
+ mmc->max_hw_segs = 1;
+ mmc->max_phys_segs = 1;
+
+ mmc->max_blk_size = VIA_CRDR_MAX_BLOCK_LENGTH;
+ mmc->max_blk_count = VIA_CRDR_MAX_BLOCK_COUNT;
+
+ mmc->max_seg_size = mmc->max_blk_size * mmc->max_blk_count;
+ mmc->max_req_size = mmc->max_seg_size;
+
+ INIT_WORK(&host->carddet_work, via_sdc_card_detect);
+
+ tasklet_init(&host->finish_tasklet, via_sdc_tasklet_finish,
+ (unsigned long)host);
+
+ addrbase = host->sdhc_mmiobase;
+ writel(0x0, addrbase + VIA_CRDR_SDINTMASK);
+ msleep(1);
+
+ lenreg = VIA_CRDR_SDBLKLEN_GPIDET | VIA_CRDR_SDBLKLEN_INTEN;
+ writel(lenreg, addrbase + VIA_CRDR_SDBLKLEN);
+
+ status = readw(addrbase + VIA_CRDR_SDSTATUS);
+ status &= VIA_CRDR_SDSTS_W1C_MASK;
+ writew(status, addrbase + VIA_CRDR_SDSTATUS);
+
+ status = readw(addrbase + VIA_CRDR_SDSTATUS2);
+ status |= VIA_CRDR_SDSTS_CFE;
+ writew(status, addrbase + VIA_CRDR_SDSTATUS2);
+
+ writeb(0x0, addrbase + VIA_CRDR_SDEXTCTRL);
+
+ writel(VIA_CRDR_SDACTIVE_INTMASK, addrbase + VIA_CRDR_SDINTMASK);
+ msleep(1);
+}
+
+static int __devinit via_sd_probe(struct pci_dev *pcidev,
+ const struct pci_device_id *id)
+{
+ struct mmc_host *mmc;
+ struct via_crdr_mmc_host *sdhost;
+ u32 base, len;
+ u8 rev, gatt;
+ int ret;
+
+ pci_read_config_byte(pcidev, PCI_CLASS_REVISION, &rev);
+ pr_info(DRV_NAME
+ ": VIA SDMMC controller found at %s [%04x:%04x] (rev %x)\n",
+ pci_name(pcidev), (int)pcidev->vendor, (int)pcidev->device,
+ (int)rev);
+
+ ret = pci_enable_device(pcidev);
+ if (ret)
+ return ret;
+
+ ret = pci_request_regions(pcidev, DRV_NAME);
+ if (ret)
+ goto disable;
+
+ pci_write_config_byte(pcidev, VIA_CRDR_PCI_WORK_MODE, 0);
+ pci_write_config_byte(pcidev, VIA_CRDR_PCI_DBG_MODE, 0);
+
+ mmc = mmc_alloc_host(sizeof(struct via_crdr_mmc_host), &pcidev->dev);
+ if (!mmc) {
+ ret = -ENOMEM;
+ goto release;
+ }
+
+ sdhost = mmc_priv(mmc);
+ sdhost->mmc = mmc;
+ dev_set_drvdata(&pcidev->dev, sdhost);
+
+ len = pci_resource_len(pcidev, 0);
+ base = pci_resource_start(pcidev, 0);
+ sdhost->mmiobase = ioremap_nocache(base, len);
+ if (!sdhost->mmiobase) {
+ ret = -ENOMEM;
+ goto free_mmc_host;
+ }
+
+ sdhost->sdhc_mmiobase =
+ sdhost->mmiobase + VIA_CRDR_SDC_OFF;
+ sdhost->ddma_mmiobase =
+ sdhost->mmiobase + VIA_CRDR_DDMA_OFF;
+ sdhost->pcictrl_mmiobase =
+ sdhost->mmiobase + VIA_CRDR_PCICTRL_OFF;
+
+ sdhost->power = MMC_VDD_165_195;
+
+ gatt = VIA_CRDR_PCICLKGATT_3V3 | VIA_CRDR_PCICLKGATT_PAD_PWRON;
+ writeb(gatt, sdhost->pcictrl_mmiobase + VIA_CRDR_PCICLKGATT);
+ via_pwron_sleep(sdhost);
+ gatt |= VIA_CRDR_PCICLKGATT_SFTRST;
+ writeb(gatt, sdhost->pcictrl_mmiobase + VIA_CRDR_PCICLKGATT);
+ msleep(3);
+
+ via_init_mmc_host(sdhost);
+
+ ret =
+ request_irq(pcidev->irq, via_sdc_isr, IRQF_SHARED, DRV_NAME,
+ sdhost);
+ if (ret)
+ goto unmap;
+
+ writeb(VIA_CRDR_PCIINTCTRL_SDCIRQEN,
+ sdhost->pcictrl_mmiobase + VIA_CRDR_PCIINTCTRL);
+ writeb(VIA_CRDR_PCITMOCTRL_1024MS,
+ sdhost->pcictrl_mmiobase + VIA_CRDR_PCITMOCTRL);
+
+ /* device-specific quirks */
+ if (pcidev->subsystem_vendor == PCI_VENDOR_ID_LENOVO &&
+ pcidev->subsystem_device == 0x3891)
+ sdhost->quirks = VIA_CRDR_QUIRK_300MS_PWRDELAY;
+
+ mmc_add_host(mmc);
+
+ return 0;
+
+unmap:
+ iounmap(sdhost->mmiobase);
+free_mmc_host:
+ dev_set_drvdata(&pcidev->dev, NULL);
+ mmc_free_host(mmc);
+release:
+ pci_release_regions(pcidev);
+disable:
+ pci_disable_device(pcidev);
+
+ return ret;
+}
+
+static void __devexit via_sd_remove(struct pci_dev *pcidev)
+{
+ struct via_crdr_mmc_host *sdhost = pci_get_drvdata(pcidev);
+ unsigned long flags;
+ u8 gatt;
+
+ spin_lock_irqsave(&sdhost->lock, flags);
+
+ /* Ensure we don't accept more commands from mmc layer */
+ sdhost->reject = 1;
+
+ /* Disable generating further interrupts */
+ writeb(0x0, sdhost->pcictrl_mmiobase + VIA_CRDR_PCIINTCTRL);
+ mmiowb();
+
+ if (sdhost->mrq) {
+ printk(KERN_ERR "%s: Controller removed during "
+ "transfer\n", mmc_hostname(sdhost->mmc));
+
+ /* make sure all DMA is stopped */
+ writel(VIA_CRDR_DMACTRL_SFTRST,
+ sdhost->ddma_mmiobase + VIA_CRDR_DMACTRL);
+ mmiowb();
+ sdhost->mrq->cmd->error = -ENOMEDIUM;
+ if (sdhost->mrq->stop)
+ sdhost->mrq->stop->error = -ENOMEDIUM;
+ tasklet_schedule(&sdhost->finish_tasklet);
+ }
+ spin_unlock_irqrestore(&sdhost->lock, flags);
+
+ mmc_remove_host(sdhost->mmc);
+
+ free_irq(pcidev->irq, sdhost);
+
+ del_timer_sync(&sdhost->timer);
+
+ tasklet_kill(&sdhost->finish_tasklet);
+
+ /* switch off power */
+ gatt = readb(sdhost->pcictrl_mmiobase + VIA_CRDR_PCICLKGATT);
+ gatt &= ~VIA_CRDR_PCICLKGATT_PAD_PWRON;
+ writeb(gatt, sdhost->pcictrl_mmiobase + VIA_CRDR_PCICLKGATT);
+
+ iounmap(sdhost->mmiobase);
+ dev_set_drvdata(&pcidev->dev, NULL);
+ mmc_free_host(sdhost->mmc);
+ pci_release_regions(pcidev);
+ pci_disable_device(pcidev);
+
+ pr_info(DRV_NAME
+ ": VIA SDMMC controller at %s [%04x:%04x] has been removed\n",
+ pci_name(pcidev), (int)pcidev->vendor, (int)pcidev->device);
+}
+
+#ifdef CONFIG_PM
+
+static void via_init_sdc_pm(struct via_crdr_mmc_host *host)
+{
+ struct sdhcreg *pm_sdhcreg;
+ void __iomem *addrbase;
+ u32 lenreg;
+ u16 status;
+
+ pm_sdhcreg = &(host->pm_sdhc_reg);
+ addrbase = host->sdhc_mmiobase;
+
+ writel(0x0, addrbase + VIA_CRDR_SDINTMASK);
+
+ lenreg = VIA_CRDR_SDBLKLEN_GPIDET | VIA_CRDR_SDBLKLEN_INTEN;
+ writel(lenreg, addrbase + VIA_CRDR_SDBLKLEN);
+
+ status = readw(addrbase + VIA_CRDR_SDSTATUS);
+ status &= VIA_CRDR_SDSTS_W1C_MASK;
+ writew(status, addrbase + VIA_CRDR_SDSTATUS);
+
+ status = readw(addrbase + VIA_CRDR_SDSTATUS2);
+ status |= VIA_CRDR_SDSTS_CFE;
+ writew(status, addrbase + VIA_CRDR_SDSTATUS2);
+
+ writel(pm_sdhcreg->sdcontrol_reg, addrbase + VIA_CRDR_SDCTRL);
+ writel(pm_sdhcreg->sdcmdarg_reg, addrbase + VIA_CRDR_SDCARG);
+ writel(pm_sdhcreg->sdintmask_reg, addrbase + VIA_CRDR_SDINTMASK);
+ writel(pm_sdhcreg->sdrsptmo_reg, addrbase + VIA_CRDR_SDRSPTMO);
+ writel(pm_sdhcreg->sdclksel_reg, addrbase + VIA_CRDR_SDCLKSEL);
+ writel(pm_sdhcreg->sdextctrl_reg, addrbase + VIA_CRDR_SDEXTCTRL);
+
+ via_print_pcictrl(host);
+ via_print_sdchc(host);
+}
+
+static int via_sd_suspend(struct pci_dev *pcidev, pm_message_t state)
+{
+ struct via_crdr_mmc_host *host;
+ int ret = 0;
+
+ host = pci_get_drvdata(pcidev);
+
+ via_save_pcictrlreg(host);
+ via_save_sdcreg(host);
+
+ ret = mmc_suspend_host(host->mmc, state);
+
+ pci_save_state(pcidev);
+ pci_enable_wake(pcidev, pci_choose_state(pcidev, state), 0);
+ pci_disable_device(pcidev);
+ pci_set_power_state(pcidev, pci_choose_state(pcidev, state));
+
+ return ret;
+}
+
+static int via_sd_resume(struct pci_dev *pcidev)
+{
+ struct via_crdr_mmc_host *sdhost;
+ int ret = 0;
+ u8 gatt;
+
+ sdhost = pci_get_drvdata(pcidev);
+
+ gatt = VIA_CRDR_PCICLKGATT_PAD_PWRON;
+ if (sdhost->power == MMC_VDD_165_195)
+ gatt &= ~VIA_CRDR_PCICLKGATT_3V3;
+ else
+ gatt |= VIA_CRDR_PCICLKGATT_3V3;
+ writeb(gatt, sdhost->pcictrl_mmiobase + VIA_CRDR_PCICLKGATT);
+ via_pwron_sleep(sdhost);
+ gatt |= VIA_CRDR_PCICLKGATT_SFTRST;
+ writeb(gatt, sdhost->pcictrl_mmiobase + VIA_CRDR_PCICLKGATT);
+ msleep(3);
+
+ msleep(100);
+
+ pci_set_power_state(pcidev, PCI_D0);
+ pci_restore_state(pcidev);
+ ret = pci_enable_device(pcidev);
+ if (ret)
+ return ret;
+
+ via_restore_pcictrlreg(sdhost);
+ via_init_sdc_pm(sdhost);
+
+ ret = mmc_resume_host(sdhost->mmc);
+
+ return ret;
+}
+
+#else /* CONFIG_PM */
+
+#define via_sd_suspend NULL
+#define via_sd_resume NULL
+
+#endif /* CONFIG_PM */
+
+static struct pci_driver via_sd_driver = {
+ .name = DRV_NAME,
+ .id_table = via_ids,
+ .probe = via_sd_probe,
+ .remove = __devexit_p(via_sd_remove),
+ .suspend = via_sd_suspend,
+ .resume = via_sd_resume,
+};
+
+static int __init via_sd_drv_init(void)
+{
+ pr_info(DRV_NAME ": VIA SD/MMC Card Reader driver "
+ "(C) 2008 VIA Technologies, Inc.\n");
+
+ return pci_register_driver(&via_sd_driver);
+}
+
+static void __exit via_sd_drv_exit(void)
+{
+ pci_unregister_driver(&via_sd_driver);
+}
+
+module_init(via_sd_drv_init);
+module_exit(via_sd_drv_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("VIA Technologies Inc.");
+MODULE_DESCRIPTION("VIA SD/MMC Card Interface driver");
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2024-12-02 12:24:20 +0000