[MMC] Add Winbond SD/MMC driver

Patch from Pierre Ossman

MAINTAINERS

@@ -2489,6 +2489,13 @@ M:	johnpol@2ka.mipt.ru
 L:	sensors@stimpy.netroedge.com
 S:	Maintained
 
+W83L51xD SD/MMC CARD INTERFACE DRIVER
+P:	Pierre Ossman
+M:	drzeus-wbsd@drzeus.cx
+L:	wbsd-devel@list.drzeus.cx
+W:	http://projects.drzeus.cx/wbsd
+S:	Maintained
+
 W83L785TS HARDWARE MONITOR DRIVER
 P:	Jean Delvare
 M:	khali@linux-fr.org

drivers/Kconfig

@@ -54,4 +54,6 @@ source "sound/Kconfig"
 
 source "drivers/usb/Kconfig"
 
+source "drivers/mmc/Kconfig"
+
 endmenu

drivers/mmc/Kconfig

@@ -49,4 +49,15 @@ config MMC_PXA
 
 	  If unsure, say N.
 
+config MMC_WBSD
+	tristate "Winbond W83L51xD SD/MMC Card Interface support"
+	depends on MMC
+	help
+	  This selects the Winbond(R) W83L51xD Secure digital and
+          Multimedia card Interface.
+	  If you have a machine with a integrated W83L518D or W83L519D
+	  SD/MMC card reader, say Y or M here.
+
+	  If unsure, say N.
+
 endmenu

drivers/mmc/Makefile

@@ -17,5 +17,6 @@ obj-$(CONFIG_MMC_BLOCK)		+= mmc_block.o
 #
 obj-$(CONFIG_MMC_ARMMMCI)	+= mmci.o
 obj-$(CONFIG_MMC_PXA)		+= pxamci.o
+obj-$(CONFIG_MMC_WBSD)		+= wbsd.o
 
 mmc_core-y := mmc.o mmc_queue.o mmc_sysfs.o

drivers/mmc/wbsd.h

+/*
+ *  linux/drivers/mmc/wbsd.h
+ *
+ *  Copyright (C) 2004 Pierre Ossman, 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 version 2 as
+ * published by the Free Software Foundation.
+ */
+
+const int config_ports[] = { 0x2E, 0x4E };
+const int unlock_codes[] = { 0x83, 0x87 };
+
+const int valid_ids[] = {
+	0x7112,
+	};
+
+#define LOCK_CODE		0xAA
+
+#define WBSD_CONF_SWRST		0x02
+#define WBSD_CONF_DEVICE	0x07
+#define WBSD_CONF_ID_HI		0x20
+#define WBSD_CONF_ID_LO		0x21
+#define WBSD_CONF_POWER		0x22
+#define WBSD_CONF_PME		0x23
+#define WBSD_CONF_PMES		0x24
+
+#define WBSD_CONF_ENABLE	0x30
+#define WBSD_CONF_PORT_HI	0x60
+#define WBSD_CONF_PORT_LO	0x61
+#define WBSD_CONF_IRQ		0x70
+#define WBSD_CONF_DRQ		0x74
+
+#define WBSD_CONF_PINS		0xF0
+
+#define DEVICE_SD		0x03
+
+#define WBSD_CMDR		0x00
+#define WBSD_DFR		0x01
+#define WBSD_EIR		0x02
+#define WBSD_ISR		0x03
+#define WBSD_FSR		0x04
+#define WBSD_IDXR		0x05
+#define WBSD_DATAR		0x06
+#define WBSD_CSR		0x07
+
+#define WBSD_EINT_CARD		0x40
+#define WBSD_EINT_FIFO_THRE	0x20
+#define WBSD_EINT_CCRC		0x10
+#define WBSD_EINT_TIMEOUT	0x08
+#define WBSD_EINT_PROGEND	0x04
+#define WBSD_EINT_CRC		0x02
+#define WBSD_EINT_TC		0x01
+
+#define WBSD_INT_PENDING	0x80
+#define WBSD_INT_CARD		0x40
+#define WBSD_INT_FIFO_THRE	0x20
+#define WBSD_INT_CRC		0x10
+#define WBSD_INT_TIMEOUT	0x08
+#define WBSD_INT_PROGEND	0x04
+#define WBSD_INT_BUSYEND	0x02
+#define WBSD_INT_TC		0x01
+
+#define WBSD_FIFO_EMPTY		0x80
+#define WBSD_FIFO_FULL		0x40
+#define WBSD_FIFO_EMTHRE	0x20
+#define WBSD_FIFO_FUTHRE	0x10
+#define WBSD_FIFO_SZMASK	0x0F
+
+#define WBSD_MSLED		0x20
+#define WBSD_POWER_N		0x10
+#define WBSD_WRPT		0x04
+#define WBSD_CARDPRESENT	0x01
+
+#define WBSD_IDX_CLK		0x01
+#define WBSD_IDX_PBSMSB		0x02
+#define WBSD_IDX_TAAC		0x03
+#define WBSD_IDX_NSAC		0x04
+#define WBSD_IDX_PBSLSB		0x05
+#define WBSD_IDX_SETUP		0x06
+#define WBSD_IDX_DMA		0x07
+#define WBSD_IDX_FIFOEN		0x08
+#define WBSD_IDX_STATUS		0x10
+#define WBSD_IDX_RSPLEN		0x1E
+#define WBSD_IDX_RESP0		0x1F
+#define WBSD_IDX_RESP1		0x20
+#define WBSD_IDX_RESP2		0x21
+#define WBSD_IDX_RESP3		0x22
+#define WBSD_IDX_RESP4		0x23
+#define WBSD_IDX_RESP5		0x24
+#define WBSD_IDX_RESP6		0x25
+#define WBSD_IDX_RESP7		0x26
+#define WBSD_IDX_RESP8		0x27
+#define WBSD_IDX_RESP9		0x28
+#define WBSD_IDX_RESP10		0x29
+#define WBSD_IDX_RESP11		0x2A
+#define WBSD_IDX_RESP12		0x2B
+#define WBSD_IDX_RESP13		0x2C
+#define WBSD_IDX_RESP14		0x2D
+#define WBSD_IDX_RESP15		0x2E
+#define WBSD_IDX_RESP16		0x2F
+#define WBSD_IDX_CRCSTATUS	0x30
+#define WBSD_IDX_ISR		0x3F
+
+#define WBSD_CLK_375K		0x00
+#define WBSD_CLK_12M		0x01
+#define WBSD_CLK_16M		0x02
+#define WBSD_CLK_24M		0x03
+
+#define WBSD_DAT3_H		0x08
+#define WBSD_FIFO_RESET		0x04
+#define WBSD_SOFT_RESET		0x02
+#define WBSD_INC_INDEX		0x01
+
+#define WBSD_DMA_SINGLE		0x02
+#define WBSD_DMA_ENABLE		0x01
+
+#define WBSD_FIFOEN_EMPTY	0x20
+#define WBSD_FIFOEN_FULL	0x10
+#define WBSD_FIFO_THREMASK	0x0F
+
+#define WBSD_BUSY		0x20
+#define WBSD_CARDTRAFFIC	0x04
+#define WBSD_SENDCMD		0x02
+#define WBSD_RECVRES		0x01
+
+#define WBSD_RSP_SHORT		0x00
+#define WBSD_RSP_LONG		0x01
+
+#define WBSD_CRC_MASK		0x1F
+#define WBSD_CRC_OK		0x05 /* S010E (00101) */
+#define WBSD_CRC_FAIL		0x0B /* S101E (01011) */
+
+
+/* 64kB / 512 */
+#define NR_SG			128
+
+struct wbsd_host
+{
+	struct mmc_host*	mmc;		/* MMC structure */
+	
+	spinlock_t		lock;		/* Mutex */
+
+	struct mmc_request*	mrq;		/* Current request */
+	
+	struct scatterlist	sg[NR_SG];	/* SG list */
+	struct scatterlist*	cur_sg;		/* Current SG entry */
+	unsigned int		num_sg;		/* Number of entries left */
+	
+	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 */
+	
+	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;
+};