new experimental driver for the CF slot on the RouterBOARD 153

SVN-Revision: 9707

3 files changed, 323 insertions, 19 deletions

diff --git a/target/linux/adm5120/files/arch/mips/adm5120/boards/mikrotik.c b/target/linux/adm5120/files/arch/mips/adm5120/boards/mikrotik.c
index 1ca151412b..102fa56157 100644
--- a/target/linux/adm5120/files/arch/mips/adm5120/boards/mikrotik.c
+++ b/target/linux/adm5120/files/arch/mips/adm5120/boards/mikrotik.c
@@ -42,8 +42,8 @@
 #include <adm5120_nand.h>
 #include <adm5120_board.h>
 #include <adm5120_platform.h>
-#include <adm5120_cf.h>
 #include <adm5120_info.h>
+
 #include <prom/routerboot.h>
 
 #define RB1XX_NAND_CHIP_DELAY	25
@@ -127,8 +127,8 @@ static struct resource rb150_nand_resource[] = {
 static struct resource rb153_cf_resources[] = {
 	{
 		.name	= "cf_membase",
-		.start	= ADM5120_EXTIO0_BASE,
-		.end	= ADM5120_EXTIO0_BASE + ADM5120_MPMC_SIZE-1 ,
+		.start	= ADM5120_EXTIO1_BASE,
+		.end	= ADM5120_EXTIO1_BASE + ADM5120_EXTIO1_SIZE-1 ,
 		.flags	= IORESOURCE_MEM
 	}, {
 		.name	= "cf_irq",
@@ -138,16 +138,11 @@ static struct resource rb153_cf_resources[] = {
 	}
 };
 
-static struct cf_device rb153_cf_data = {
-	.gpio_pin = ADM5120_GPIO_PIN4
-};
-
 static struct platform_device rb153_cf_device = {
-	.name		= "rb153-cf",
+	.name		= "pata-rb153-cf",
 	.id		= -1,
 	.resource	= rb153_cf_resources,
 	.num_resources	= ARRAY_SIZE(rb153_cf_resources),
-	.dev.platform_data = &rb153_cf_data,
 };
 
 static struct platform_device *rb153_devices[] __initdata = {
@@ -223,7 +218,7 @@ static void rb150_nand_cmd_ctrl(struct mtd_info *mtd, int cmd,
 static void __init rb1xx_mac_setup(void)
 {
 	int i, j;
-	
+
 	for (i = 0; i < rb_hs.mac_count; i++) {
 		for (j = 0; j < RB_MAC_SIZE; j++)
 			adm5120_eth_macs[i][j] = rb_hs.macs[i][j];
@@ -247,6 +242,9 @@ static void __init rb1xx_flash_setup(void)
 
 static void __init rb153_cf_setup(void)
 {
+	/* enable CSX1:INTX1 on GPIO 3:4 for the CF slot */
+	adm5120_gpio_csx1_enable();
+
 	gpio_request(RB153_GPIO_CF_RDY, "cf-ready");
 	gpio_direction_input(RB153_GPIO_CF_RDY);
 	gpio_request(RB153_GPIO_CF_WT, "cf-wait");
diff --git a/target/linux/adm5120/files/drivers/ata/pata_rb153_cf.c b/target/linux/adm5120/files/drivers/ata/pata_rb153_cf.c
new file mode 100644
index 0000000000..16ec6762f2
--- /dev/null
+++ b/target/linux/adm5120/files/drivers/ata/pata_rb153_cf.c
@@ -0,0 +1,303 @@
+/*
+ *  A low-level PATA driver to handle a Compact Flash connected on the
+ *  Mikrotik's RouterBoard 153 board.
+ *
+ *  Copyright (C) 2007 Gabor Juhos <juhosg at openwrt.org>
+ *
+ *  This file was based on: drivers/ata/pata_ixp4xx_cf.c
+ *	Copyright (C) 2006-07 Tower Technologies
+ *	Author: Alessandro Zummo <a.zummo@towertech.it>
+ *
+ *  Also was based on the driver for Linux 2.4.xx published by Mikrotik for
+ *  their RouterBoard 1xx and 5xx series devices. The original Mikrotik code
+ *  seems not to have a license.
+ *
+ *  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/kernel.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+
+#include <linux/io.h>
+#include <linux/interrupt.h>
+#include <linux/irq.h>
+
+#include <linux/libata.h>
+#include <scsi/scsi_host.h>
+
+#include <asm/gpio.h>
+
+#define DRV_NAME	"pata-rb153-cf"
+#define DRV_VERSION	"0.1"
+#define DRV_DESC	"PATA driver for RouterBOARD 153 Compact Flash"
+
+#define RB153_CF_MAXPORTS	1
+#define RB153_CF_IO_DELAY	100
+
+#define RB153_CF_REG_CMD	0x0800
+#define RB153_CF_REG_CTRL	0x080E
+#define RB153_CF_REG_DATA	0x0C00
+
+struct rb153_cf_info {
+	void __iomem	*iobase;
+	unsigned int	gpio_line;
+	int		error;
+};
+
+/* ------------------------------------------------------------------------ */
+
+static inline void rb153_pata_finish_io(struct ata_port *ap)
+{
+	struct ata_host *ah = ap->host;
+
+	ata_altstatus(ap);
+	ndelay(RB153_CF_IO_DELAY);
+
+	set_irq_type(ah->irq, IRQ_TYPE_LEVEL_HIGH);
+}
+
+static void rb153_pata_exec_command(struct ata_port *ap,
+				const struct ata_taskfile *tf)
+{
+	writeb(tf->command, ap->ioaddr.command_addr);
+	rb153_pata_finish_io(ap);
+}
+
+static void rb153_pata_data_xfer(struct ata_device *adev, unsigned char *buf,
+				unsigned int buflen, int write_data)
+{
+	struct ata_port *ap = adev->ap;
+	unsigned int i;
+
+	if (write_data) {
+		for (i = 0; i < buflen; i++)
+			writeb(buf[i], ap->ioaddr.data_addr);
+	} else {
+		for (; buflen > 0; buflen--)
+			buf[i] = readb(ap->ioaddr.data_addr);
+	}
+
+	rb153_pata_finish_io(ap);
+}
+
+static void rb153_pata_thaw(struct ata_port *ap)
+{
+	struct rb153_cf_info *info = ap->host->private_data;
+
+	info->error = 0;
+}
+
+static irqreturn_t rb153_pata_irq_handler(int irq, void *dev_instance)
+{
+	struct ata_host *ah = dev_instance;
+	struct rb153_cf_info *info = ah->private_data;
+
+	if (gpio_get_value(info->gpio_line)) {
+		set_irq_type(ah->irq, IRQ_TYPE_LEVEL_LOW);
+		if (!info->error)
+			ata_interrupt(irq, dev_instance);
+	} else {
+		set_irq_type(ah->irq, IRQ_TYPE_LEVEL_HIGH);
+	}
+
+	return IRQ_HANDLED;
+}
+
+static void rb153_pata_irq_clear(struct ata_port *ap)
+{
+}
+
+static int rb153_pata_port_start(struct ata_port *ap)
+{
+	return 0;
+}
+
+static struct ata_port_operations rb153_pata_port_ops = {
+	.port_disable		= ata_port_disable,
+
+	.tf_load		= ata_tf_load,
+	.tf_read		= ata_tf_read,
+
+	.exec_command		= rb153_pata_exec_command,
+	.check_status 		= ata_check_status,
+	.dev_select 		= ata_std_dev_select,
+
+	.data_xfer		= rb153_pata_data_xfer,
+
+	.qc_prep 		= ata_qc_prep,
+	.qc_issue		= ata_qc_issue_prot,
+
+	.thaw			= rb153_pata_thaw,
+	.error_handler		= ata_bmdma_error_handler,
+
+	.irq_handler		= rb153_pata_irq_handler,
+	.irq_clear		= rb153_pata_irq_clear,
+	.irq_on			= ata_irq_on,
+
+	.port_start		= rb153_pata_port_start,
+};
+
+/* ------------------------------------------------------------------------ */
+
+static struct scsi_host_template rb153_pata_sht = {
+	.module			= THIS_MODULE,
+	.name			= DRV_NAME,
+	.ioctl			= ata_scsi_ioctl,
+	.queuecommand		= ata_scsi_queuecmd,
+	.slave_configure	= ata_scsi_slave_config,
+	.slave_destroy		= ata_scsi_slave_destroy,
+	.bios_param		= ata_std_bios_param,
+	.proc_name		= DRV_NAME,
+
+	.can_queue		= ATA_DEF_QUEUE,
+	.this_id		= ATA_SHT_THIS_ID,
+	.sg_tablesize		= LIBATA_MAX_PRD,
+	.dma_boundary		= ATA_DMA_BOUNDARY,
+	.cmd_per_lun		= ATA_SHT_CMD_PER_LUN,
+	.emulated		= ATA_SHT_EMULATED,
+	.use_clustering		= ATA_SHT_USE_CLUSTERING,
+};
+
+/* ------------------------------------------------------------------------ */
+
+static void rb153_pata_setup_ports(struct ata_host *ah)
+{
+	struct rb153_cf_info *info = ah->private_data;
+	struct ata_port *ap;
+	struct ata_ioports *iop;
+
+	ap = ah->ports[0];
+	iop = &ap->ioaddr;
+
+	ap->ops		= &rb153_pata_port_ops;
+	ap->pio_mask	= 0x1f; /* PIO4 */
+	ap->flags	|= ATA_FLAG_MMIO | ATA_FLAG_NO_LEGACY;
+
+	iop->cmd_addr		= info->iobase + RB153_CF_REG_CMD;
+	iop->ctl_addr		= info->iobase + RB153_CF_REG_CTRL;
+	iop->altstatus_addr	= info->iobase + RB153_CF_REG_CTRL;
+	iop->data_addr		= info->iobase + RB153_CF_REG_DATA;
+
+	ata_std_ports(iop);
+}
+
+static __devinit int rb153_pata_driver_probe(struct platform_device *pdev)
+{
+	unsigned int irq;
+	int gpio;
+	struct resource *res;
+	struct ata_host *ah;
+	struct rb153_cf_info *info;
+	int ret;
+
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	if (!res) {
+		dev_err(&pdev->dev, "no IOMEM resource found\n");
+		return -EINVAL;
+	}
+
+	irq = platform_get_irq(pdev, 0);
+	if (irq <= 0) {
+		dev_err(&pdev->dev, "no IRQ resource found\n");
+		return -ENOENT;
+	}
+
+	gpio = irq_to_gpio(irq);
+	if (gpio < 0) {
+		dev_err(&pdev->dev, "no GPIO found for irq%d\n", irq);
+		return -ENOENT;
+	}
+
+	ret = gpio_request(gpio, DRV_NAME);
+	if (ret) {
+		dev_err(&pdev->dev, "GPIO request failed\n");
+		return ret;
+	}
+
+	/* allocate host */
+	ah = ata_host_alloc(&pdev->dev, RB153_CF_MAXPORTS);
+	if (!ah)
+		return -ENOMEM;
+
+	platform_set_drvdata(pdev, ah);
+
+	info = devm_kzalloc(&pdev->dev, sizeof(*info), GFP_KERNEL);
+	if (!info)
+		return -ENOMEM;
+
+	ah->private_data = info;
+
+	info->iobase = devm_ioremap_nocache(&pdev->dev, res->start,
+				res->end - res->start + 1);
+	if (!info->iobase)
+		return -ENOMEM;
+
+	ret = gpio_direction_input(gpio);
+	if (ret) {
+		dev_err(&pdev->dev, "unable to set GPIO direction, err=%d\n",
+				ret);
+		goto err_free_gpio;
+	}
+
+	rb153_pata_setup_ports(ah);
+
+	ret = ata_host_activate(ah, irq, ata_interrupt, IRQF_TRIGGER_HIGH,
+				&rb153_pata_sht);
+	if (ret)
+		goto err_free_gpio;
+
+	return 0;
+
+err_free_gpio:
+	gpio_free(gpio);
+
+	return ret;
+}
+
+static __devexit int rb153_pata_driver_remove(struct platform_device *pdev)
+{
+	struct ata_host *ah = platform_get_drvdata(pdev);
+	struct rb153_cf_info *info = ah->private_data;
+
+	ata_host_detach(ah);
+	gpio_free(info->gpio_line);
+
+	return 0;
+}
+
+static struct platform_driver rb153_pata_platform_driver = {
+	.probe		= rb153_pata_driver_probe,
+	.remove		= __devexit_p(rb153_pata_driver_remove),
+	.driver	 = {
+		.name   = DRV_NAME,
+		.owner  = THIS_MODULE,
+	},
+};
+
+/* ------------------------------------------------------------------------ */
+
+#define DRV_INFO DRV_DESC " version " DRV_VERSION
+
+static int __init rb153_pata_module_init(void)
+{
+	printk(KERN_INFO DRV_INFO "\n");
+
+	return platform_driver_register(&rb153_pata_platform_driver);
+}
+
+static void __exit rb153_pata_module_exit(void)
+{
+	platform_driver_unregister(&rb153_pata_platform_driver);
+}
+
+MODULE_AUTHOR("Gabor Juhos <juhosg at openwrt.org>");
+MODULE_DESCRIPTION(DRV_DESC);
+MODULE_VERSION(DRV_VERSION);
+MODULE_LICENSE("GPL");
+
+module_init(rb153_pata_module_init);
+module_exit(rb153_pata_module_exit);
diff --git a/target/linux/adm5120/files/include/asm-mips/mach-adm5120/adm5120_defs.h b/target/linux/adm5120/files/include/asm-mips/mach-adm5120/adm5120_defs.h
index 2f92a4564a..42e9513792 100644
--- a/target/linux/adm5120/files/include/asm-mips/mach-adm5120/adm5120_defs.h
+++ b/target/linux/adm5120/files/include/asm-mips/mach-adm5120/adm5120_defs.h
@@ -29,29 +29,32 @@
 #define ADM5120_SDRAM0_BASE	0x00000000
 #define ADM5120_SDRAM1_BASE	0x01000000
 #define ADM5120_SRAM1_BASE	0x10000000
-#define ADM5120_NAND_BASE	ADM5120_SRAM1_BASE
 #define ADM5120_EXTIO0_BASE	0x10C00000
+#define ADM5120_EXTIO0_SIZE	0x00200000
+#define ADM5120_EXTIO1_BASE	0x10E00000
+#define ADM5120_EXTIO1_SIZE	0x00200000
 #define ADM5120_MPMC_BASE	0x11000000
+#define ADM5120_MPMC_SIZE	0x00200000
 #define ADM5120_USBC_BASE	0x11200000
+#define ADM5120_USBC_SIZE	0x00200000
 #define ADM5120_PCIMEM_BASE	0x11400000
+#define ADM5120_PCIMEM_SIZE	0x00100000
 #define ADM5120_PCIIO_BASE	0x11500000
+#define ADM5120_PCIIO_SIZE	0x000FFFF0
 #define ADM5120_PCICFG_ADDR	0x115FFFF0
 #define ADM5120_PCICFG_DATA	0x115FFFF8
+#define ADM5120_PCICFG_SIZE	0x00000010
 #define ADM5120_SWITCH_BASE	0x12000000
+#define ADM5120_SWITCH_SIZE	0x00200000
 #define ADM5120_INTC_BASE	0x12200000
+#define ADM5120_INTC_SIZE	0x00200000
 #define ADM5120_UART0_BASE	0x12600000
 #define ADM5120_UART1_BASE	0x12800000
+#define ADM5120_UART_SIZE	0x00200000
 #define ADM5120_SRAM0_BASE	0x1FC00000
 
+#define ADM5120_NAND_BASE	ADM5120_SRAM1_BASE
 #define ADM5120_NAND_SIZE	0xB
-#define ADM5120_MPMC_SIZE	0x1000
-#define ADM5120_USBC_SIZE	0x84
-#define ADM5120_PCIMEM_SIZE	(ADM5120_PCIIO_BASE - ADM5120_PCIMEM_BASE)
-#define ADM5120_PCIIO_SIZE	(ADM5120_PCICFG_ADDR - ADM5120_PCIIO_BASE)
-#define ADM5120_PCICFG_SIZE	0x10
-#define ADM5120_SWITCH_SIZE	0x114
-#define ADM5120_INTC_SIZE	0x28
-#define ADM5120_UART_SIZE	0x20
 
 #define ADM5120_CLK_175		175000000
 #define ADM5120_CLK_200		200000000