由于我们需要进行数据存储,所以给tq2440加了ide硬盘,并进行了驱动移植。
内核是2.6.30.4,修改了ide-generic.c如下:- /*
- * generic/default IDE host driver
- *
- * Copyright (C) 2004, 2008-2009 Bartlomiej Zolnierkiewicz
- * This code was split off from ide.c. See it for original copyrights.
- *
- * May be copied or modified under the terms of the GNU General Public License.
- */
- #include <linux/kernel.h>
- #include <linux/init.h>
- #include <linux/module.h>
- #include <linux/ide.h>
- #include <linux/pci_ids.h>
- /* FIXME: convert arm and m32r to use ide_platform host driver */
- #ifdef CONFIG_ARM
- #include <asm/irq.h>
- #endif
- #ifdef CONFIG_M32R
- #include <asm/m32r.h>
- #endif
- #ifdef CONFIG_ARCH_S3C2410
- #include <linux/kernel.h>
- #include <linux/init.h>
- #include <linux/module.h>
- #include <linux/ide.h>
- #include <linux/pci_ids.h>
- #include <asm/mach-types.h>
- #include <linux/init.h>
- #include <linux/ide.h>
- #include <linux/irq.h>
- #include <linux/interrupt.h>
- #include <mach/regs-mem.h>
- #include <mach/regs-gpio.h>
- #include <mach/regs-gpioj.h>
- #include <asm/io.h>
- #include <asm/irq.h>
- #define IDE_ARM_IRQPIN S3C2410_GPF6
- #define IDE_DATA_OFFSET 0
- #define IDE_STATUS_OFFSET 7
- #define IDE_CONTROL_OFFSET 8
- #endif
- #define DRV_NAME "ide_generic"
- static int probe_mask;
- module_param(probe_mask, int, 0);
- MODULE_PARM_DESC(probe_mask, "probe mask for legacy ISA IDE ports");
- static const struct ide_port_info ide_generic_port_info = {
- .host_flags = IDE_HFLAG_NO_DMA,
- .chipset = ide_generic,
- };
- #ifdef CONFIG_ARM
- static const u16 legacy_bases[] = { 0x1f0 };
- static const int legacy_irqs[] = { 14 };
- #elif defined(CONFIG_PLAT_M32700UT) || defined(CONFIG_PLAT_MAPPI2) || \
- defined(CONFIG_PLAT_OPSPUT)
- static const u16 legacy_bases[] = { 0x1f0 };
- static const int legacy_irqs[] = { PLD_IRQ_CFIREQ };
- #elif defined(CONFIG_PLAT_MAPPI3)
- static const u16 legacy_bases[] = { 0x1f0, 0x170 };
- static const int legacy_irqs[] = { PLD_IRQ_CFIREQ, PLD_IRQ_IDEIREQ };
- #elif defined(CONFIG_ALPHA)
- static const u16 legacy_bases[] = { 0x1f0, 0x170, 0x1e8, 0x168 };
- static const int legacy_irqs[] = { 14, 15, 11, 10 };
- #else
- static const u16 legacy_bases[] = { 0x1f0, 0x170, 0x1e8, 0x168, 0x1e0, 0x160 };
- static const int legacy_irqs[] = { 14, 15, 11, 10, 8, 12 };
- #endif
- static void ide_generic_check_pci_legacy_iobases(int *primary, int *secondary)
- {
- #ifdef CONFIG_PCI
- struct pci_dev *p = NULL;
- u16 val;
- for_each_pci_dev(p) {
- if (pci_resource_start(p, 0) == 0x1f0)
- *primary = 1;
- if (pci_resource_start(p, 2) == 0x170)
- *secondary = 1;
- /* Cyrix CS55{1,2}0 pre SFF MWDMA ATA on the bridge */
- if (p->vendor == PCI_VENDOR_ID_CYRIX &&
- (p->device == PCI_DEVICE_ID_CYRIX_5510 ||
- p->device == PCI_DEVICE_ID_CYRIX_5520))
- *primary = *secondary = 1;
- /* Intel MPIIX - PIO ATA on non PCI side of bridge */
- if (p->vendor == PCI_VENDOR_ID_INTEL &&
- p->device == PCI_DEVICE_ID_INTEL_82371MX) {
- pci_read_config_word(p, 0x6C, &val);
- if (val & 0x8000) {
- /* ATA port enabled */
- if (val & 0x4000)
- *secondary = 1;
- else
- *primary = 1;
- }
- }
- }
- #endif
- }
- extern int s3c2410_gpio_getirq(unsigned int pin);
- extern void s3c2410_gpio_cfgpin(unsigned int pin, unsigned int function);
- /*设置IDE接口的寄存器地址,总线宽度,
- *nWAIT等参数,使用nGCS1作为控制(CS1),
- *nGCS2作为命令(CS0)*/
- static inline void s3c2410_hw_setup(hw_regs_t *hw)
- {
- int i;
- unsigned int oldval_bwscon; /* 用来保存BWSCON寄存器的值 */
- unsigned long mapaddr0;
- unsigned long mapaddr1;
- unsigned long baseaddr[] = {0x10000000, 0x08000000}; //ngcs2 接cs0,ngcs1接cs1
- /* 设置BANK1/2: 总线宽度为16 */
- oldval_bwscon = readl(S3C2410_BWSCON);
- writel((oldval_bwscon & ~(3<<8)) \
- | S3C2410_BWSCON_DW1_16 | S3C2410_BWSCON_WS1
- | S3C2410_BWSCON_DW2_16 | S3C2410_BWSCON_WS2, S3C2410_BWSCON);
- /* 设置BANK1/2的时间参数 */
- writel((S3C2410_BANKCON_Tacs4 | S3C2410_BANKCON_Tcos4 | S3C2410_BANKCON_Tacc14
- | S3C2410_BANKCON_Tcoh4 | S3C2410_BANKCON_Tcah4 | S3C2410_BANKCON_Tacp6
- | S3C2410_BANKCON_PMCnorm), S3C2410_BANKCON1);
- writel((S3C2410_BANKCON_Tacs4 | S3C2410_BANKCON_Tcos4 | S3C2410_BANKCON_Tacc14
- | S3C2410_BANKCON_Tcoh4 | S3C2410_BANKCON_Tcah4 | S3C2410_BANKCON_Tacp6
- | S3C2410_BANKCON_PMCnorm), S3C2410_BANKCON2);
- /*
- * 设置IDE接口的地址, ADDR3~1接到IDE接口的A02~00
- * 注意:没有使用ADDR0,所以下面确定地址时,都左移1位
- */
- memset(hw, 0, sizeof(*hw));
- mapaddr0 = (unsigned long)ioremap(baseaddr[0], 16);
- mapaddr1 = (unsigned long)ioremap(baseaddr[1], 16);
- for (i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; i++)
- hw->io_ports_array[i] = mapaddr0 + (i<<1);
- hw->io_ports.ctl_addr = mapaddr1 + (6<<1);
- hw->irq = s3c2410_gpio_getirq(IDE_ARM_IRQPIN);
- s3c2410_gpio_cfgpin(IDE_ARM_IRQPIN, S3C2410_GPIO_IRQ);
- set_irq_type(hw->irq, IRQF_TRIGGER_RISING);
- printk("*******ARM IDE register!\n");
- }
- static int __init ide_generic_init(void)
- {
- hw_regs_t hw, *hws[] = { &hw, NULL, NULL, NULL };
- unsigned long io_addr;
- int i, rc = 0, primary = 0, secondary = 0;
- ide_generic_check_pci_legacy_iobases(&primary, &secondary);
- if (!probe_mask) {
- printk(KERN_INFO DRV_NAME ": please use "probe_mask=0x3f" "
- "module parameter for probing all legacy ISA IDE ports\n");
- if (primary == 0)
- probe_mask |= 0x1;
- if (secondary == 0)
- probe_mask |= 0x2;
- } else
- printk(KERN_INFO DRV_NAME ": enforcing probing of I/O ports "
- "upon user request\n");
- for (i = 0; i < ARRAY_SIZE(legacy_bases); i++) {
- io_addr = legacy_bases[i];
- if ((probe_mask & (1 << i)) && io_addr) {
- if (!request_region(io_addr, 8, DRV_NAME)) {
- printk(KERN_ERR "%s: I/O resource 0x%lX-0x%lX "
- "not free.\n",
- DRV_NAME, io_addr, io_addr + 7);
- rc = -EBUSY;
- continue;
- }
- if (!request_region(io_addr + 0x206, 1, DRV_NAME)) {
- printk(KERN_ERR "%s: I/O resource 0x%lX "
- "not free.\n",
- DRV_NAME, io_addr + 0x206);
- release_region(io_addr, 8);
- rc = -EBUSY;
- continue;
- }
- memset(&hw, 0, sizeof(hw));
- #ifdef CONFIG_ARCH_S3C2410
- printk("*******s3c2410_hw_setup.......\n");
- s3c2410_hw_setup(&hw);
- printk("*******s3c2410_hw_setup OKKKKK\n");
- for (i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; i++)
- printk("io_ports_array[%d] = 0x%lX\n", i, hw.io_ports_array[i]);
- printk("io_ports.ctl_addr = 0x%lX\n", hw.io_ports.ctl_addr);
- printk("irq = %d\n", hw.irq);
- printk("io_ports.status_addr = 0x%lx\n", hw.io_ports.status_addr);
- #else
- printk("*******s3c2410 ELSE\n");
- ide_std_init_ports(&hw, io_addr, io_addr + 0x206);
- #ifdef CONFIG_IA64
- printk("*******IA64.....................\n");
- hw.irq = isa_irq_to_vector(legacy_irqs);
- #else
- printk("*******IA64 ELSE.....................\n");
- hw.irq = legacy_irqs;
- printk("*******IA64 ELSE OK.....................\n");
- #endif
- #endif
- printk("IDE_HOST_ADD\n");
- printk("**************\n***************\n");
- hw.chipset = ide_generic;
- rc = ide_host_add(&ide_generic_port_info, hws, NULL);
- if (rc) {
- printk("*******rc........................\n");
- release_region(io_addr + 0x206, 1);
- release_region(io_addr, 8);
- }
- }
- }
- return rc;
- printk("*******END OF IDE_GENERIC_INIT.....................\n");
- }
- module_init(ide_generic_init);
- MODULE_LICENSE("GPL");
复制代码 下面是启动信息,我打印了一些io申请信息方便调试。硬盘的信息也读到了,hitachi什么的。但是读着读着就lost interrupt。不知道是什么原因,请大侠们帮忙看一下,谢谢了!
Uniform Multi-Platform E-IDE driver
ide_generic: please use "probe_mask=0x3f" module parameter for probing all legacy ISA IDE ports
*******ARM IDE register!**********
io_ports_array[0] = 0xC4820000
io_ports_array[1] = 0xC4820002
io_ports_array[2] = 0xC4820004
io_ports_array[3] = 0xC4820006
io_ports_array[4] = 0xC4820008
io_ports_array[5] = 0xC482000A
io_ports_array[6] = 0xC482000C
io_ports_array[7] = 0xC482000E
io_ports.ctl_addr = 0xC482400C
irq = 50
io_ports.status_addr = 0xc482000e
hda: Hitachi HTS542580K9SA00, ATA DISK drive
ide0 at 0xc4820000-0xc482000e,0xc482400c on irq 50
ide-gd driver 1.18
hda: max request size: 128KiB
hda: 16514064 sectors (8455 MB) w/7229KiB Cache, CHS=16383/16/63
hda:<4>hda: lost interrupt
hda: lost interrupt
hda: lost interrupt
hda: lost interrupt
unknown partition table
Driver 'sd' needs updating - please use bus_type methods
**********dm9000 Ethernet Driver, V1.31**********
iosize = 4, addr-start = 0x20000000, io_addr = 0xc4828000
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