diff --git a/src/drivers/disk/filo.c b/src/drivers/disk/filo.c deleted file mode 100644 index 8d77d24e..00000000 --- a/src/drivers/disk/filo.c +++ /dev/null @@ -1,58 +0,0 @@ -#include "etherboot.h" -#include "pci.h" -#include "disk.h" - -/* - * UBL, The Universal Talkware Boot Loader - * Copyright (C) 2000 Universal Talkware Inc. - * Copyright (C) 2002 Eric Biederman - * Add to load filo - * By LYH yhlu@tyan.com - * - * - * 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. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - * - * - */ - -#ifdef CONFIG_PCI -extern int filo(void); - -static int filo_pci_probe(struct dev *dev, struct pci_device *pci) -{ - struct disk *disk = (struct disk *)dev; - - filo(); - - /* past all of the drives */ - dev->index = 0; - return 0; -} -#define PCI_DEVICE_ID_INTEL_82801CA_11 0x248b - -static struct pci_id ide_controllers[] = { -{ PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_11, "PIIX4" }, -}; - -static struct pci_driver ide_driver __pci_driver = { - .type = DISK_DRIVER, - .name = "FILO", - .probe = filo_pci_probe, - .ids = ide_controllers, - .id_count = sizeof(ide_controllers)/sizeof(ide_controllers), - .class = PCI_CLASS_STORAGE_IDE, -}; -#endif - diff --git a/src/drivers/disk/ide_disk.c b/src/drivers/disk/ide_disk.c deleted file mode 100644 index c46ca136..00000000 --- a/src/drivers/disk/ide_disk.c +++ /dev/null @@ -1,892 +0,0 @@ -#include "etherboot.h" -#include "timer.h" -#include "pci.h" -#include "isa.h" -#include "disk.h" - -#define BSY_SET_DURING_SPINUP 1 -/* - * UBL, The Universal Talkware Boot Loader - * Copyright (C) 2000 Universal Talkware Inc. - * Copyright (C) 2002 Eric Biederman - * - * 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. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - * - * - */ -struct controller { - uint16_t cmd_base; - uint16_t ctrl_base; -}; - -struct harddisk_info { - struct controller *ctrl; - uint16_t heads; - uint16_t cylinders; - uint16_t sectors_per_track; - uint8_t model_number[41]; - uint8_t slave; - sector_t sectors; - int address_mode; /* am i lba (0x40) or chs (0x00) */ -#define ADDRESS_MODE_CHS 0 -#define ADDRESS_MODE_LBA 1 -#define ADDRESS_MODE_LBA48 2 - int drive_exists; - int slave_absent; - int basedrive; -}; - - -#define IDE_SECTOR_SIZE 0x200 - -#define IDE_BASE0 (0x1F0u) /* primary controller */ -#define IDE_BASE1 (0x170u) /* secondary */ -#define IDE_BASE2 (0x0F0u) /* third */ -#define IDE_BASE3 (0x070u) /* fourth */ - -#define IDE_REG_EXTENDED_OFFSET (0x204u) - -#define IDE_REG_DATA(base) ((ctrl)->cmd_base + 0u) /* word register */ -#define IDE_REG_ERROR(base) ((ctrl)->cmd_base + 1u) -#define IDE_REG_PRECOMP(base) ((ctrl)->cmd_base + 1u) -#define IDE_REG_FEATURE(base) ((ctrl)->cmd_base + 1u) -#define IDE_REG_SECTOR_COUNT(base) ((ctrl)->cmd_base + 2u) -#define IDE_REG_SECTOR_NUMBER(base) ((ctrl)->cmd_base + 3u) -#define IDE_REG_LBA_LOW(base) ((ctrl)->cmd_base + 3u) -#define IDE_REG_CYLINDER_LSB(base) ((ctrl)->cmd_base + 4u) -#define IDE_REG_LBA_MID(base) ((ctrl)->cmd_base + 4u) -#define IDE_REG_CYLINDER_MSB(base) ((ctrl)->cmd_base + 5u) -#define IDE_REG_LBA_HIGH(base) ((ctrl)->cmd_base + 5u) -#define IDE_REG_DRIVEHEAD(base) ((ctrl)->cmd_base + 6u) -#define IDE_REG_DEVICE(base) ((ctrl)->cmd_base + 6u) -#define IDE_REG_STATUS(base) ((ctrl)->cmd_base + 7u) -#define IDE_REG_COMMAND(base) ((ctrl)->cmd_base + 7u) -#define IDE_REG_ALTSTATUS(base) ((ctrl)->ctrl_base + 2u) -#define IDE_REG_DEVICE_CONTROL(base) ((ctrl)->ctrl_base + 2u) - -struct ide_pio_command -{ - uint8_t feature; - uint8_t sector_count; - uint8_t lba_low; - uint8_t lba_mid; - uint8_t lba_high; - uint8_t device; -# define IDE_DH_DEFAULT (0xA0) -# define IDE_DH_HEAD(x) ((x) & 0x0F) -# define IDE_DH_MASTER (0x00) -# define IDE_DH_SLAVE (0x10) -# define IDE_DH_LBA (0x40) -# define IDE_DH_CHS (0x00) - uint8_t command; - uint8_t sector_count2; - uint8_t lba_low2; - uint8_t lba_mid2; - uint8_t lba_high2; -}; - -#define IDE_DEFAULT_COMMAND { 0xFFu, 0x01, 0x00, 0x0000, IDE_DH_DEFAULT } - -#define IDE_ERR_ICRC 0x80 /* ATA Ultra DMA bad CRC */ -#define IDE_ERR_BBK 0x80 /* ATA bad block */ -#define IDE_ERR_UNC 0x40 /* ATA uncorrected error */ -#define IDE_ERR_MC 0x20 /* ATA media change */ -#define IDE_ERR_IDNF 0x10 /* ATA id not found */ -#define IDE_ERR_MCR 0x08 /* ATA media change request */ -#define IDE_ERR_ABRT 0x04 /* ATA command aborted */ -#define IDE_ERR_NTK0 0x02 /* ATA track 0 not found */ -#define IDE_ERR_NDAM 0x01 /* ATA address mark not found */ - -#define IDE_STATUS_BSY 0x80 /* busy */ -#define IDE_STATUS_RDY 0x40 /* ready */ -#define IDE_STATUS_DF 0x20 /* device fault */ -#define IDE_STATUS_WFT 0x20 /* write fault (old name) */ -#define IDE_STATUS_SKC 0x10 /* seek complete */ -#define IDE_STATUS_DRQ 0x08 /* data request */ -#define IDE_STATUS_CORR 0x04 /* corrected */ -#define IDE_STATUS_IDX 0x02 /* index */ -#define IDE_STATUS_ERR 0x01 /* error (ATA) */ -#define IDE_STATUS_CHK 0x01 /* check (ATAPI) */ - -#define IDE_CTRL_HD15 0x08 /* bit should always be set to one */ -#define IDE_CTRL_SRST 0x04 /* soft reset */ -#define IDE_CTRL_NIEN 0x02 /* disable interrupts */ - - -/* Most mandtory and optional ATA commands (from ATA-3), */ - -#define IDE_CMD_CFA_ERASE_SECTORS 0xC0 -#define IDE_CMD_CFA_REQUEST_EXT_ERR_CODE 0x03 -#define IDE_CMD_CFA_TRANSLATE_SECTOR 0x87 -#define IDE_CMD_CFA_WRITE_MULTIPLE_WO_ERASE 0xCD -#define IDE_CMD_CFA_WRITE_SECTORS_WO_ERASE 0x38 -#define IDE_CMD_CHECK_POWER_MODE1 0xE5 -#define IDE_CMD_CHECK_POWER_MODE2 0x98 -#define IDE_CMD_DEVICE_RESET 0x08 -#define IDE_CMD_EXECUTE_DEVICE_DIAGNOSTIC 0x90 -#define IDE_CMD_FLUSH_CACHE 0xE7 -#define IDE_CMD_FORMAT_TRACK 0x50 -#define IDE_CMD_IDENTIFY_DEVICE 0xEC -#define IDE_CMD_IDENTIFY_DEVICE_PACKET 0xA1 -#define IDE_CMD_IDENTIFY_PACKET_DEVICE 0xA1 -#define IDE_CMD_IDLE1 0xE3 -#define IDE_CMD_IDLE2 0x97 -#define IDE_CMD_IDLE_IMMEDIATE1 0xE1 -#define IDE_CMD_IDLE_IMMEDIATE2 0x95 -#define IDE_CMD_INITIALIZE_DRIVE_PARAMETERS 0x91 -#define IDE_CMD_INITIALIZE_DEVICE_PARAMETERS 0x91 -#define IDE_CMD_NOP 0x00 -#define IDE_CMD_PACKET 0xA0 -#define IDE_CMD_READ_BUFFER 0xE4 -#define IDE_CMD_READ_DMA 0xC8 -#define IDE_CMD_READ_DMA_QUEUED 0xC7 -#define IDE_CMD_READ_MULTIPLE 0xC4 -#define IDE_CMD_READ_SECTORS 0x20 -#define IDE_CMD_READ_SECTORS_EXT 0x24 -#define IDE_CMD_READ_VERIFY_SECTORS 0x40 -#define IDE_CMD_RECALIBRATE 0x10 -#define IDE_CMD_SEEK 0x70 -#define IDE_CMD_SET_FEATURES 0xEF -#define IDE_CMD_SET_MAX_ADDR_EXT 0x24 -#define IDE_CMD_SET_MULTIPLE_MODE 0xC6 -#define IDE_CMD_SLEEP1 0xE6 -#define IDE_CMD_SLEEP2 0x99 -#define IDE_CMD_STANDBY1 0xE2 -#define IDE_CMD_STANDBY2 0x96 -#define IDE_CMD_STANDBY_IMMEDIATE1 0xE0 -#define IDE_CMD_STANDBY_IMMEDIATE2 0x94 -#define IDE_CMD_WRITE_BUFFER 0xE8 -#define IDE_CMD_WRITE_DMA 0xCA -#define IDE_CMD_WRITE_DMA_QUEUED 0xCC -#define IDE_CMD_WRITE_MULTIPLE 0xC5 -#define IDE_CMD_WRITE_SECTORS 0x30 -#define IDE_CMD_WRITE_VERIFY 0x3C - -/* IDE_CMD_SET_FEATURE sub commands */ -#define IDE_FEATURE_CFA_ENABLE_8BIT_PIO 0x01 -#define IDE_FEATURE_ENABLE_WRITE_CACHE 0x02 -#define IDE_FEATURE_SET_TRANSFER_MODE 0x03 -#define IDE_FEATURE_ENABLE_POWER_MANAGEMENT 0x05 -#define IDE_FEATURE_ENABLE_POWERUP_IN_STANDBY 0x06 -#define IDE_FEATURE_STANDBY_SPINUP_DRIVE 0x07 -#define IDE_FEATURE_CFA_ENABLE_POWER_MODE1 0x0A -#define IDE_FEATURE_DISABLE_MEDIA_STATUS_NOTIFICATION 0x31 -#define IDE_FEATURE_ENABLE_AUTOMATIC_ACOUSTIC_MANAGEMENT 0x42 -#define IDE_FEATURE_SET_MAXIMUM_HOST_INTERFACE_SECTOR_TIMES 0x43 -#define IDE_FEATURE_DISABLE_READ_LOOKAHEAD 0x55 -#define IDE_FEATURE_ENABLE_RELEASE_INTERRUPT 0x5D -#define IDE_FEATURE_ENABLE_SERVICE_INTERRUPT 0x5E -#define IDE_FEATURE_DISABLE_REVERTING_TO_POWERON_DEFAULTS 0x66 -#define IDE_FEATURE_CFA_DISABLE_8BIT_PIO 0x81 -#define IDE_FEATURE_DISABLE_WRITE_CACHE 0x82 -#define IDE_FEATURE_DISABLE_POWER_MANAGEMENT 0x85 -#define IDE_FEATURE_DISABLE_POWERUP_IN_STANDBY 0x86 -#define IDE_FEATURE_CFA_DISABLE_POWER_MODE1 0x8A -#define IDE_FEATURE_ENABLE_MEDIA_STATUS_NOTIFICATION 0x95 -#define IDE_FEATURE_ENABLE_READ_LOOKAHEAD 0xAA -#define IDE_FEATURE_DISABLE_AUTOMATIC_ACOUSTIC_MANAGEMENT 0xC2 -#define IDE_FEATURE_ENABLE_REVERTING_TO_POWERON_DEFAULTS 0xCC -#define IDE_FEATURE_DISABLE_SERVICE_INTERRUPT 0xDE - - - -struct controller controller; -struct harddisk_info harddisk_info[2]; - -static int await_ide(int (*done)(struct controller *ctrl), - struct controller *ctrl, unsigned long timeout) -{ - int result; - for(;;) { - result = done(ctrl); - if (result) { - return 0; - } - poll_interruptions(); - if ((timeout == 0) || (currticks() > timeout)) { - break; - } - } - return -1; -} - -/* The maximum time any IDE command can last 31 seconds, - * So if any IDE commands takes this long we know we have problems. - */ -#define IDE_TIMEOUT (32*TICKS_PER_SEC) - -static int not_bsy(struct controller *ctrl) -{ - return !(inb(IDE_REG_STATUS(ctrl)) & IDE_STATUS_BSY); -} -#if !BSY_SET_DURING_SPINUP -static int timeout(struct controller *ctrl) -{ - return 0; -} -#endif - -static int ide_software_reset(struct controller *ctrl) -{ - /* Wait a little bit in case this is immediately after - * hardware reset. - */ - mdelay(2); - /* A software reset should not be delivered while the bsy bit - * is set. If the bsy bit does not clear in a reasonable - * amount of time give up. - */ - if (await_ide(not_bsy, ctrl, currticks() + IDE_TIMEOUT) < 0) { - return -1; - } - - /* Disable Interrupts and reset the ide bus */ - outb(IDE_CTRL_HD15 | IDE_CTRL_SRST | IDE_CTRL_NIEN, - IDE_REG_DEVICE_CONTROL(ctrl)); - udelay(5); - outb(IDE_CTRL_HD15 | IDE_CTRL_NIEN, IDE_REG_DEVICE_CONTROL(ctrl)); - mdelay(2); - if (await_ide(not_bsy, ctrl, currticks() + IDE_TIMEOUT) < 0) { - return -1; - } - return 0; -} - -static void pio_set_registers( - struct controller *ctrl, const struct ide_pio_command *cmd) -{ - uint8_t device; - /* Disable Interrupts */ - outb(IDE_CTRL_HD15 | IDE_CTRL_NIEN, IDE_REG_DEVICE_CONTROL(ctrl)); - - /* Possibly switch selected device */ - device = inb(IDE_REG_DEVICE(ctrl)); - outb(cmd->device, IDE_REG_DEVICE(ctrl)); - if ((device & (1UL << 4)) != (cmd->device & (1UL << 4))) { - /* Allow time for the selected drive to switch, - * The linux ide code suggests 50ms is the right - * amount of time to use here. - */ - mdelay(50); - } - outb(cmd->feature, IDE_REG_FEATURE(ctrl)); - outb(cmd->sector_count2, IDE_REG_SECTOR_COUNT(ctrl)); - outb(cmd->sector_count, IDE_REG_SECTOR_COUNT(ctrl)); - outb(cmd->lba_low2, IDE_REG_LBA_LOW(ctrl)); - outb(cmd->lba_low, IDE_REG_LBA_LOW(ctrl)); - outb(cmd->lba_mid2, IDE_REG_LBA_MID(ctrl)); - outb(cmd->lba_mid, IDE_REG_LBA_MID(ctrl)); - outb(cmd->lba_high2, IDE_REG_LBA_HIGH(ctrl)); - outb(cmd->lba_high, IDE_REG_LBA_HIGH(ctrl)); - outb(cmd->command, IDE_REG_COMMAND(ctrl)); -} - - -static int pio_non_data(struct controller *ctrl, const struct ide_pio_command *cmd) -{ - /* Wait until the busy bit is clear */ - if (await_ide(not_bsy, ctrl, currticks() + IDE_TIMEOUT) < 0) { - return -1; - } - - pio_set_registers(ctrl, cmd); - if (await_ide(not_bsy, ctrl, currticks() + IDE_TIMEOUT) < 0) { - return -1; - } - /* FIXME is there more error checking I could do here? */ - return 0; -} - -static int pio_data_in(struct controller *ctrl, const struct ide_pio_command *cmd, - void *buffer, size_t bytes) -{ - unsigned int status; - - /* FIXME handle commands with multiple blocks */ - /* Wait until the busy bit is clear */ - if (await_ide(not_bsy, ctrl, currticks() + IDE_TIMEOUT) < 0) { - return -1; - } - - /* How do I tell if INTRQ is asserted? */ - pio_set_registers(ctrl, cmd); - if (await_ide(not_bsy, ctrl, currticks() + IDE_TIMEOUT) < 0) { - return -1; - } - status = inb(IDE_REG_STATUS(ctrl)); - if (!(status & IDE_STATUS_DRQ)) { - return -1; - } - insw(IDE_REG_DATA(ctrl), buffer, bytes/2); - status = inb(IDE_REG_STATUS(ctrl)); - if (status & IDE_STATUS_DRQ) { - return -1; - } - return 0; -} - -#if 0 -static int pio_packet(struct controller *ctrl, int in, - const void *packet, int packet_len, - void *buffer, int buffer_len) -{ - const uint8_t *pbuf; - unsigned int status; - struct ide_pio_command cmd; - memset(&cmd, 0, sizeof(cmd)); - - /* Wait until the busy bit is clear */ - if (await_ide(not_bsy, ctrl, currticks() + IDE_TIMEOUT) < 0) { - return -1; - } - pio_set_registers(ctrl, cmd); - ndelay(400); - if (await_ide(not_bsy, ctrl, currticks() + IDE_TIMEOUT) < 0) { - return -1; - } - status = inb(IDE_REG_STATUS(ctrl)); - if (!(status & IDE_STATUS_DRQ)) { - return -1; - } - while(packet_len > 1) { - outb(*pbuf, IDE_REG_DATA(ctrl)); - pbuf++; - packet_len -= 1; - } - inb(IDE_REG_ALTSTATUS(ctrl)); - if (await_ide){} - /*FIXME finish this function */ - - -} -#endif - -static inline int ide_read_sector_chs( - struct harddisk_info *info, void *buffer, unsigned long sector) -{ - struct ide_pio_command cmd; - unsigned int track; - unsigned int offset; - unsigned int cylinder; - - memset(&cmd, 0, sizeof(cmd)); - cmd.sector_count = 1; - - track = sector / info->sectors_per_track; - /* Sector number */ - offset = 1 + (sector % info->sectors_per_track); - cylinder = track / info->heads; - cmd.lba_low = offset; - cmd.lba_mid = cylinder & 0xff; - cmd.lba_high = (cylinder >> 8) & 0xff; - cmd.device = IDE_DH_DEFAULT | - IDE_DH_HEAD(track % info->heads) | - info->slave | - IDE_DH_CHS; - cmd.command = IDE_CMD_READ_SECTORS; - return pio_data_in(info->ctrl, &cmd, buffer, IDE_SECTOR_SIZE); -} - -static inline int ide_read_sector_lba( - struct harddisk_info *info, void *buffer, unsigned long sector) -{ - struct ide_pio_command cmd; - memset(&cmd, 0, sizeof(cmd)); - - cmd.sector_count = 1; - cmd.lba_low = sector & 0xff; - cmd.lba_mid = (sector >> 8) & 0xff; - cmd.lba_high = (sector >> 16) & 0xff; - cmd.device = IDE_DH_DEFAULT | - ((sector >> 24) & 0x0f) | - info->slave | - IDE_DH_LBA; - cmd.command = IDE_CMD_READ_SECTORS; - return pio_data_in(info->ctrl, &cmd, buffer, IDE_SECTOR_SIZE); -} - -static inline int ide_read_sector_lba48( - struct harddisk_info *info, void *buffer, sector_t sector) -{ - struct ide_pio_command cmd; - memset(&cmd, 0, sizeof(cmd)); - - cmd.sector_count = 1; - cmd.lba_low = sector & 0xff; - cmd.lba_mid = (sector >> 8) & 0xff; - cmd.lba_high = (sector >> 16) & 0xff; - cmd.lba_low2 = (sector >> 24) & 0xff; - cmd.lba_mid2 = (sector >> 32) & 0xff; - cmd.lba_high2 = (sector >> 40) & 0xff; - cmd.device = info->slave | IDE_DH_LBA; - cmd.command = IDE_CMD_READ_SECTORS_EXT; - return pio_data_in(info->ctrl, &cmd, buffer, IDE_SECTOR_SIZE); -} - - -static int ide_read(struct disk *disk, sector_t sector) -{ - struct harddisk_info *info = disk->priv; - int result; - - /* Report the buffer is empty */ - disk->sector = 0; - disk->bytes = 0; - if (sector > info->sectors) { - return -1; - } - if (info->address_mode == ADDRESS_MODE_CHS) { - result = ide_read_sector_chs(info, disk->buffer, sector); - } - else if (info->address_mode == ADDRESS_MODE_LBA) { - result = ide_read_sector_lba(info, disk->buffer, sector); - } - else if (info->address_mode == ADDRESS_MODE_LBA48) { - result = ide_read_sector_lba48(info, disk->buffer, sector); - } - else { - result = -1; - } - /* On success report the buffer has data */ - if (result != -1) { - disk->bytes = IDE_SECTOR_SIZE; - disk->sector = sector; - } - return result; -} - -static int init_drive(struct harddisk_info *info, struct controller *ctrl, int slave, - int basedrive, unsigned char *buffer) -{ - uint16_t* drive_info; - struct ide_pio_command cmd; - int i; - - info->ctrl = ctrl; - info->heads = 0u; - info->cylinders = 0u; - info->sectors_per_track = 0u; - info->address_mode = IDE_DH_CHS; - info->sectors = 0ul; - info->drive_exists = 0; - info->slave_absent = 0; - info->slave = slave?IDE_DH_SLAVE: IDE_DH_MASTER; - info->basedrive = basedrive; - -#if 0 - printf("Testing for disk %d\n", info->basedrive); -#endif - - /* Select the drive that we are testing */ - outb(IDE_DH_DEFAULT | IDE_DH_HEAD(0) | IDE_DH_CHS | info->slave, - IDE_REG_DEVICE(ctrl)); - mdelay(50); - - /* Test to see if the drive registers exist, - * In many cases this quickly rules out a missing drive. - */ - for(i = 0; i < 4; i++) { - outb(0xaa + i, (ctrl->cmd_base) + 2 + i); - } - for(i = 0; i < 4; i++) { - if (inb((ctrl->cmd_base) + 2 + i) != 0xaa + i) { - return 1; - } - } - for(i = 0; i < 4; i++) { - outb(0x55 + i, (ctrl->cmd_base) + 2 + i); - } - for(i = 0; i < 4; i++) { - if (inb((ctrl->cmd_base) + 2 + i) != 0x55 + i) { - return 1; - } - } -#if 0 - printf("Probing for disk %d\n", info->basedrive); -#endif - - memset(&cmd, 0, sizeof(cmd)); - cmd.device = IDE_DH_DEFAULT | IDE_DH_HEAD(0) | IDE_DH_CHS | info->slave; - cmd.command = IDE_CMD_IDENTIFY_DEVICE; - - - if (pio_data_in(ctrl, &cmd, buffer, IDE_SECTOR_SIZE) < 0) { - /* Well, if that command didn't work, we probably don't have drive. */ - return 1; - } - - - /* Now suck the data out */ - drive_info = (uint16_t *)buffer; - if (drive_info[2] == 0x37C8) { - /* If the response is incomplete spin up the drive... */ - memset(&cmd, 0, sizeof(cmd)); - cmd.device = IDE_DH_DEFAULT | IDE_DH_HEAD(0) | IDE_DH_CHS | - info->slave; - cmd.feature = IDE_FEATURE_STANDBY_SPINUP_DRIVE; - if (pio_non_data(ctrl, &cmd) < 0) { - /* If the command doesn't work give up on the drive */ - return 1; - } - - } - if ((drive_info[2] == 0x37C8) || (drive_info[2] == 0x8C73)) { - /* The response is incomplete retry the drive info command */ - memset(&cmd, 0, sizeof(cmd)); - cmd.device = IDE_DH_DEFAULT | IDE_DH_HEAD(0) | IDE_DH_CHS | - info->slave; - cmd.command = IDE_CMD_IDENTIFY_DEVICE; - if(pio_data_in(ctrl, &cmd, buffer, IDE_SECTOR_SIZE) < 0) { - /* If the command didn't work give up on the drive. */ - return 1; - } - } - if ((drive_info[2] != 0x37C8) && - (drive_info[2] != 0x738C) && - (drive_info[2] != 0x8C73) && - (drive_info[2] != 0xC837) && - (drive_info[2] != 0x0000)) { - printf("Invalid IDE Configuration: %hx\n", drive_info[2]); - return 1; - } - for(i = 27; i < 47; i++) { - info->model_number[((i-27)<< 1)] = (drive_info[i] >> 8) & 0xff; - info->model_number[((i-27)<< 1)+1] = drive_info[i] & 0xff; - } - info->model_number[40] = '\0'; - info->drive_exists = 1; - - /* See if LBA is supported */ - if (drive_info[49] & (1 << 9)) { - info->address_mode = ADDRESS_MODE_LBA; - info->sectors = (drive_info[61] << 16) | (drive_info[60]); - /* Enable LBA48 mode if it is present */ - if (drive_info[83] & (1 <<10)) { - /* Should LBA48 depend on LBA? */ - printf("LBA48 mode\n"); - info->address_mode = ADDRESS_MODE_LBA48; - info->sectors = - (((sector_t)drive_info[103]) << 48) | - (((sector_t)drive_info[102]) << 32) | - (((sector_t)drive_info[101]) << 16) | - (((sector_t)drive_info[100]) << 0); - } - } else { - info->address_mode = ADDRESS_MODE_CHS; - info->heads = drive_info[3]; - info->cylinders = drive_info[1]; - info->sectors_per_track = drive_info[6]; - info->sectors = - info->sectors_per_track * - info->heads * - info->cylinders; - printf( "%s sectors_per_track=[%d], heads=[%d], cylinders=[%d]\n", - __FUNCTION__, - info->sectors_per_track, - info->heads, - info->cylinders); - } - /* See if we have a slave */ - if (!info->slave && (((drive_info[93] >> 14) & 3) == 1)) { - info->slave_absent = !(drive_info[93] & (1 << 5)); - } - /* See if we need to put the device in CFA power mode 1 */ - if ((drive_info[160] & ((1 << 15) | (1 << 13)| (1 << 12))) == - ((1 << 15) | (1 << 13)| (1 << 12))) { - memset(&cmd, 0, sizeof(cmd)); - cmd.device = IDE_DH_DEFAULT | IDE_DH_HEAD(0) | IDE_DH_CHS | info->slave; - cmd.feature = IDE_FEATURE_CFA_ENABLE_POWER_MODE1; - if (pio_non_data(ctrl, &cmd) < 0) { - /* If I need to power up the drive, and I can't - * give up. - */ - printf("Cannot power up CFA device\n"); - return 1; - } - } - printf("disk%d %dk cap: %hx\n", - info->basedrive, - (unsigned long)(info->sectors >> 1), - drive_info[49]); - return 0; -} - -static int init_controller(struct controller *ctrl, int basedrive, unsigned char *buffer) -{ - struct harddisk_info *info; - - /* Intialize the harddisk_info structures */ - memset(harddisk_info, 0, sizeof(harddisk_info)); - - /* Put the drives ide channel in a know state and wait - * for the drives to spinup. - * - * In practice IDE disks tend not to respond to commands until - * they have spun up. This makes IDE hard to deal with - * immediately after power up, as the delays can be quite - * long, so we must be very careful here. - * - * There are two pathological cases that must be dealt with: - * - * - The BSY bit not being set while the IDE drives spin up. - * In this cases only a hard coded delay will work. As - * I have not reproduced it, and this is out of spec for - * IDE drives the work around can be enabled by setting - * BSY_SET_DURING_SPINUP to 0. - * - * - The BSY bit floats high when no drives are plugged in. - * This case will not be detected except by timing out but - * we avoid the problems by only probing devices we are - * supposed to boot from. If we don't do the probe we - * will not experience the problem. - * - * So speed wise I am only slow if the BSY bit is not set - * or not reported by the IDE controller during spinup, which - * is quite rare. - * - */ -#if !BSY_SET_DURING_SPINUP - if (await_ide(timeout, ctrl, IDE_TIMEOUT) < 0) { - return -1; - } -#endif - if (ide_software_reset(ctrl) < 0) { - return -1; - } - - /* Note: I have just done a software reset. It may be - * reasonable to just read the boot time signatures - * off of the drives to see if they are present. - * - * For now I will go with just sending commands to the drives - * and assuming filtering out missing drives by detecting registers - * that won't set and commands that fail to execute properly. - */ - - /* Now initialize the individual drives */ - info = &harddisk_info[0]; - init_drive(info, ctrl, 0, basedrive, buffer); - if (info->drive_exists && !info->slave_absent) { - basedrive++; - info++; - init_drive(info, ctrl, 1, basedrive, buffer); - } - - return 0; -} - -static void ide_disable(struct dev *dev) -{ - struct disk *disk = (struct disk *)dev; - struct harddisk_info *info = disk->priv; - ide_software_reset(info->ctrl); -} - -static int ide_pci_probe(struct dev *dev, struct pci_device *pci) -{ - struct disk *disk = (struct disk *)dev; - struct harddisk_info *info; - int index; - - adjust_pci_device(pci); - - index = dev->index + 1; - if (dev->how_probe == PROBE_NEXT) { - index++; - } - for(; index < 4; index++) { - unsigned mask; - mask = (index < 2)? (1 << 0) : (1 << 2); - if ((pci->class & mask) == 0) { - /* IDE special pci mode */ - uint16_t base; - base = (index < 2)?IDE_BASE0:IDE_BASE1; - controller.cmd_base = base; - controller.ctrl_base = base + IDE_REG_EXTENDED_OFFSET; - } else { - /* IDE normal pci mode */ - unsigned cmd_reg, ctrl_reg; - uint32_t cmd_base, ctrl_base; - if (index < 2) { - cmd_reg = PCI_BASE_ADDRESS_0; - ctrl_reg = PCI_BASE_ADDRESS_1; - } else { - cmd_reg = PCI_BASE_ADDRESS_2; - ctrl_reg = PCI_BASE_ADDRESS_3; - } - pcibios_read_config_dword(pci->bus, pci->devfn, cmd_reg, &cmd_base); - pcibios_read_config_dword(pci->bus, pci->devfn, ctrl_reg, &ctrl_base); - controller.cmd_base = cmd_base & ~3; - controller.ctrl_base = ctrl_base & ~3; - } - if (((index & 1) == 0) || (dev->how_probe == PROBE_AWAKE)) { - if (init_controller(&controller, disk->drive, disk->buffer) < 0) { - /* nothing behind the controller */ - continue; - } - } - info = &harddisk_info[index & 1]; - if (!info->drive_exists) { - /* unknown drive */ - continue; - } - disk->hw_sector_size = IDE_SECTOR_SIZE; - disk->sectors_per_read = 1; - disk->sectors = info->sectors; - dev->index = index; - dev->disable = ide_disable; - disk->read = ide_read; - disk->priv = info; - - return 1; - } - /* past all of the drives */ - dev->index = 0; - return 0; -} -#define PCI_DEVICE_ID_INTEL_82801CA_11 0x248b -static struct pci_id ide_controllers[] = { - PCI_ROM(0x0000, 0x0000, "ide_disk", "Generic IDE disk support"), -/* { PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_11, "PIIX4" },*/ -#if 0 /* Currently I don't need any entries in this table so ignore it */ -{ PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371FB_0, "PIIX" }, -{ PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371FB_1, "PIIX" }, -{ PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371MX, "MPIIX" }, -{ PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371SB_1, "PIIX3" }, -{ PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371AB, "PIIX4" }, -{ PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AB_1, "PIIX4" }, -{ PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443MX_1, "PIIX4" }, -{ PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AA_1, "PIIX4" }, -{ PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82372FB_1, "PIIX4" }, -{ PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82451NX, "PIIX4" }, -{ PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_9, "PIIX4" }, -{ PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801BA_8, "PIIX4" }, -{ PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_10, "PIIX4" }, -{ PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C561, "VIA_IDE" }, -{ PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C576_1, "VP_IDE" }, -{ PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C586_1, "VP_IDE" }, -{ PCI_VENDOR_ID_PROMISE, PCI_DEVICE_ID_PROMISE_20246, "PDC20246" }, -{ PCI_VENDOR_ID_PROMISE, PCI_DEVICE_ID_PROMISE_20262, "PDC20262" }, -{ PCI_VENDOR_ID_PROMISE, PCI_DEVICE_ID_PROMISE_20265, "PDC20265" }, -{ PCI_VENDOR_ID_PROMISE, PCI_DEVICE_ID_PROMISE_20267, "PDC20267" }, -{ PCI_VENDOR_ID_PROMISE, PCI_DEVICE_ID_PROMISE_20268, "PDC20268" }, -{ PCI_VENDOR_ID_PROMISE, PCI_DEVICE_ID_PROMISE_20268R, "PDC20268" }, -{ PCI_VENDOR_ID_PCTECH, PCI_DEVICE_ID_PCTECH_RZ1000, "RZ1000" }, -{ PCI_VENDOR_ID_PCTECH, PCI_DEVICE_ID_PCTECH_RZ1001, "RZ1001" }, -{ PCI_VENDOR_ID_PCTECH, PCI_DEVICE_ID_PCTECH_SAMURAI_IDE, "SAMURAI" }, -{ PCI_VENDOR_ID_CMD, PCI_DEVICE_ID_CMD_640, "CMD640" }, -{ PCI_VENDOR_ID_CMD, PCI_DEVICE_ID_CMD_643, "CMD646" }, -{ PCI_VENDOR_ID_CMD, PCI_DEVICE_ID_CMD_646, "CMD648" }, -{ PCI_VENDOR_ID_CMD, PCI_DEVICE_ID_CMD_648, "CMD643" }, -{ PCI_VENDOR_ID_CMD, PCI_DEVICE_ID_CMD_649, "CMD649" }, -{ PCI_VENDOR_ID_SI, PCI_DEVICE_ID_SI_5513, "SIS5513" }, -{ PCI_VENDOR_ID_OPTI, PCI_DEVICE_ID_OPTI_82C621, "OPTI621" }, -{ PCI_VENDOR_ID_OPTI, PCI_DEVICE_ID_OPTI_82C558, "OPTI621V" }, -{ PCI_VENDOR_ID_OPTI, PCI_DEVICE_ID_OPTI_82C825, "OPTI621X" }, -{ PCI_VENDOR_ID_TEKRAM, PCI_DEVICE_ID_TEKRAM_DC290, "TRM290" }, -{ PCI_VENDOR_ID_NS, PCI_DEVICE_ID_NS_87410, "NS87410" }, -{ PCI_VENDOR_ID_NS, PCI_DEVICE_ID_NS_87415, "NS87415" }, -{ PCI_VENDOR_ID_HOLTEK2, PCI_DEVICE_ID_HOLTEK2_6565, "HT6565" }, -{ PCI_VENDOR_ID_ARTOP, PCI_DEVICE_ID_ARTOP_ATP850UF, "AEC6210" }, -{ PCI_VENDOR_ID_ARTOP, PCI_DEVICE_ID_ARTOP_ATP860, "AEC6260" }, -{ PCI_VENDOR_ID_ARTOP, PCI_DEVICE_ID_ARTOP_ATP860R, "AEC6260R" }, -{ PCI_VENDOR_ID_WINBOND, PCI_DEVICE_ID_WINBOND_82C105, "W82C105" }, -{ PCI_VENDOR_ID_UMC, PCI_DEVICE_ID_UMC_UM8673F, "UM8673F" }, -{ PCI_VENDOR_ID_UMC, PCI_DEVICE_ID_UMC_UM8886A, "UM8886A" }, -{ PCI_VENDOR_ID_UMC, PCI_DEVICE_ID_UMC_UM8886BF, "UM8886BF" }, -{ PCI_VENDOR_ID_TTI, PCI_DEVICE_ID_TTI_HPT343, "HPT34X" }, -{ PCI_VENDOR_ID_TTI, PCI_DEVICE_ID_TTI_HPT366, "HPT366" }, -{ PCI_VENDOR_ID_AL, PCI_DEVICE_ID_AL_M5229, "ALI15X3" }, -{ PCI_VENDOR_ID_CONTAQ, PCI_DEVICE_ID_CONTAQ_82C693, "CY82C693" }, -{ 0x3388, 0x8013, "HINT_IDE" }, -{ PCI_VENDOR_ID_CYRIX, PCI_DEVICE_ID_CYRIX_5530_IDE, "CS5530" }, -{ PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_COBRA_7401, "AMD7401" }, -{ PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_VIPER_7409, "AMD7409" }, -{ PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_VIPER_7411, "AMD7411" }, -{ PCI_VENDOR_ID_PDC, PCI_DEVICE_ID_PDC_1841, "PDCADMA" }, -{ PCI_VENDOR_ID_EFAR, PCI_DEVICE_ID_EFAR_SLC90E66_1, "SLC90E66" }, -{ PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_OSB4IDE, "OSB4" }, -{ PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_CSB5IDE, "OSB5" }, -{ PCI_VENDOR_ID_ITE, PCI_DEVICE_ID_ITE_IT8172G, "ITE8172G" }, -#endif -}; - -static struct pci_driver ide_driver __pci_driver = { - .type = DISK_DRIVER, - .name = "IDE", - .probe = ide_pci_probe, - .ids = ide_controllers, - .id_count = sizeof(ide_controllers)/sizeof(ide_controllers), - .class = PCI_CLASS_STORAGE_IDE, -}; - -/* The isa driver works but it causes disks to show up twice. - * comment it out for now. - */ -#if 0 -static int ide_isa_probe(struct dev * dev, unsigned short *probe_addrs) -{ - struct disk *disk = (struct disk *)dev; - int index; - unsigned short addr; - struct harddisk_info *info; - - index = dev->index +1; - if (dev->how_probe == PROBE_AWAKE) { - index--; - } - for(; (index >= 0) && (addr = probe_addrs[index >> 1]); index += 2) { - if ((index & 1) == 0) { - controller.cmd_base = addr; - controller.ctrl_base = addr + IDE_REG_EXTENDED_OFFSET; - if (init_controller(&controller, disk->drive, disk->buffer) < 0) { - /* nothing behind the controller */ - continue; - } - } - info = &harddisk_info[index & 1]; - if (!info->drive_exists) { - /* unknown drive */ - return 0; - } - disk->sectors_per_read = 1; - disk->sectors = info->sectors; - dev->index = index; - dev->disable = ide_disable; - disk->read = ide_read; - disk->priv = info; - - return 1; - } - /* past all of the drives */ - dev->index = -1; - return 0; -} - -static unsigned short ide_base[] = { - IDE_BASE0, - IDE_BASE1, - IDE_BASE2, - IDE_BASE3, - 0 -}; -static struct isa_driver ide_isa_driver __isa_driver = { - .type = DISK_DRIVER, - .name = "IDE/ISA", - .probe = ide_isa_probe, - .ioaddrs = ide_base, -}; - -#endif diff --git a/src/drivers/disk/pc_floppy.c b/src/drivers/disk/pc_floppy.c deleted file mode 100644 index 7d953a28..00000000 --- a/src/drivers/disk/pc_floppy.c +++ /dev/null @@ -1,1151 +0,0 @@ -#include "etherboot.h" -#include "timer.h" -#include "disk.h" -#include "isa.h" - - -#undef MDEBUG - -static int FD_BASE = 0x3f0; - -#define FD_DRIVE 0 - -#define FD_STATUS_A (FD_BASE + 0) /* Status register A */ -#define FD_STATUS_B (FD_BASE + 1) /* Status register B */ -#define FD_DOR (FD_BASE + 2) /* Digital Output Register */ -#define FD_TDR (FD_BASE + 3) /* Tape Drive Register */ -#define FD_STATUS (FD_BASE + 4) /* Main Status Register */ -#define FD_DSR (FD_BASE + 4) /* Data Rate Select Register (old) */ -#define FD_DATA (FD_BASE + 5) /* Data Transfer (FIFO) register */ -#define FD_DIR (FD_BASE + 7) /* Digital Input Register (read) */ -#define FD_DCR (FD_BASE + 7) /* Diskette Control Register (write)*/ - -/* Bit of FD_STATUS_A */ -#define STA_INT_PENDING 0x80 /* Interrupt Pending */ - -/* DOR */ -#define DOR_DRIVE0 0x00 -#define DOR_DRIVE1 0x01 -#define DOR_DRIVE2 0x02 -#define DOR_DRIVE3 0x03 -#define DOR_DRIVE_MASK 0x03 -#define DOR_NO_RESET 0x04 -#define DOR_DMA_EN 0x08 -#define DOR_MOT_EN0 0x10 -#define DOR_MOT_EN1 0x20 -#define DOR_MOT_EN2 0x40 -#define DOR_MOT_EN3 0x80 - -/* Bits of main status register */ -#define STATUS_BUSYMASK 0x0F /* drive busy mask */ -#define STATUS_BUSY 0x10 /* FDC busy */ -#define STATUS_NON_DMA 0x20 /* 0- DMA mode */ -#define STATUS_DIR 0x40 /* 0- cpu->fdc */ -#define STATUS_READY 0x80 /* Data reg ready */ - -/* Bits of FD_ST0 */ -#define ST0_DS 0x03 /* drive select mask */ -#define ST0_HA 0x04 /* Head (Address) */ -#define ST0_NR 0x08 /* Not Ready */ -#define ST0_ECE 0x10 /* Equipment check error */ -#define ST0_SE 0x20 /* Seek end */ -#define ST0_INTR 0xC0 /* Interrupt code mask */ -#define ST0_INTR_OK (0 << 6) -#define ST0_INTR_ERROR (1 << 6) -#define ST0_INTR_INVALID (2 << 6) -#define ST0_INTR_POLL_ERROR (3 << 6) - -/* Bits of FD_ST1 */ -#define ST1_MAM 0x01 /* Missing Address Mark */ -#define ST1_WP 0x02 /* Write Protect */ -#define ST1_ND 0x04 /* No Data - unreadable */ -#define ST1_OR 0x10 /* OverRun */ -#define ST1_CRC 0x20 /* CRC error in data or addr */ -#define ST1_EOC 0x80 /* End Of Cylinder */ - -/* Bits of FD_ST2 */ -#define ST2_MAM 0x01 /* Missing Address Mark (again) */ -#define ST2_BC 0x02 /* Bad Cylinder */ -#define ST2_SNS 0x04 /* Scan Not Satisfied */ -#define ST2_SEH 0x08 /* Scan Equal Hit */ -#define ST2_WC 0x10 /* Wrong Cylinder */ -#define ST2_CRC 0x20 /* CRC error in data field */ -#define ST2_CM 0x40 /* Control Mark = deleted */ - -/* Bits of FD_ST3 */ -#define ST3_HA 0x04 /* Head (Address) */ -#define ST3_DS 0x08 /* drive is double-sided */ -#define ST3_TZ 0x10 /* Track Zero signal (1=track 0) */ -#define ST3_RY 0x20 /* drive is ready */ -#define ST3_WP 0x40 /* Write Protect */ -#define ST3_FT 0x80 /* Drive Fault */ - -/* Values for FD_COMMAND */ -#define FD_RECALIBRATE 0x07 /* move to track 0 */ -#define FD_SEEK 0x0F /* seek track */ -#define FD_READ 0xA6 /* read with MT, SKip deleted */ -#define FD_WRITE 0xC5 /* write with MT, MFM */ -#define FD_SENSEI 0x08 /* Sense Interrupt Status */ -#define FD_SPECIFY 0x03 /* specify HUT etc */ -#define FD_FORMAT 0x4D /* format one track */ -#define FD_VERSION 0x10 /* get version code */ -#define FD_CONFIGURE 0x13 /* configure FIFO operation */ -#define FD_PERPENDICULAR 0x12 /* perpendicular r/w mode */ -#define FD_GETSTATUS 0x04 /* read ST3 */ -#define FD_DUMPREGS 0x0E /* dump the contents of the fdc regs */ -#define FD_READID 0xEA /* prints the header of a sector */ -#define FD_UNLOCK 0x14 /* Fifo config unlock */ -#define FD_LOCK 0x94 /* Fifo config lock */ -#define FD_RSEEK_OUT 0x8f /* seek out (i.e. to lower tracks) */ -#define FD_RSEEK_IN 0xcf /* seek in (i.e. to higher tracks) */ - - -/* the following commands are new in the 82078. They are not used in the - * floppy driver, except the first three. These commands may be useful for apps - * which use the FDRAWCMD interface. For doc, get the 82078 spec sheets at - * http://www-techdoc.intel.com/docs/periph/fd_contr/datasheets/ */ - -#define FD_PARTID 0x18 /* part id ("extended" version cmd) */ -#define FD_SAVE 0x2e /* save fdc regs for later restore */ -#define FD_DRIVESPEC 0x8e /* drive specification: Access to the - * 2 Mbps data transfer rate for tape - * drives */ - -#define FD_RESTORE 0x4e /* later restore */ -#define FD_POWERDOWN 0x27 /* configure FDC's powersave features */ -#define FD_FORMAT_N_WRITE 0xef /* format and write in one go. */ -#define FD_OPTION 0x33 /* ISO format (which is a clean way to - * pack more sectors on a track) */ - -/* FDC version return types */ -#define FDC_NONE 0x00 -#define FDC_UNKNOWN 0x10 /* DO NOT USE THIS TYPE EXCEPT IF IDENTIFICATION - FAILS EARLY */ -#define FDC_8272A 0x20 /* Intel 8272a, NEC 765 */ -#define FDC_765ED 0x30 /* Non-Intel 1MB-compatible FDC, can't detect */ -#define FDC_82072 0x40 /* Intel 82072; 8272a + FIFO + DUMPREGS */ -#define FDC_82072A 0x45 /* 82072A (on Sparcs) */ -#define FDC_82077_ORIG 0x51 /* Original version of 82077AA, sans LOCK */ -#define FDC_82077 0x52 /* 82077AA-1 */ -#define FDC_82078_UNKN 0x5f /* Unknown 82078 variant */ -#define FDC_82078 0x60 /* 44pin 82078 or 64pin 82078SL */ -#define FDC_82078_1 0x61 /* 82078-1 (2Mbps fdc) */ -#define FDC_S82078B 0x62 /* S82078B (first seen on Adaptec AVA-2825 VLB - * SCSI/EIDE/Floppy controller) */ -#define FDC_87306 0x63 /* National Semiconductor PC 87306 */ - -/* - * Beware: the fdc type list is roughly sorted by increasing features. - * Presence of features is tested by comparing the FDC version id with the - * "oldest" version that has the needed feature. - * If during FDC detection, an obscure test fails late in the sequence, don't - * assign FDC_UNKNOWN. Else the FDC will be treated as a dumb 8272a, or worse. - * This is especially true if the tests are unneeded. - */ - -/* Parameters for a 1.44 3.5" disk */ -#define DISK_H1440_SIZE 2880 -#define DISK_H1440_SECT 18 -#define DISK_H1440_HEAD 2 -#define DISK_H1440_TRACK 80 -#define DISK_H1440_STRETCH 0 -#define DISK_H1440_GAP 0x1B -#define DISK_H1440_RATE 0x00 -#define DISK_H1440_SPEC1 0xCF -#define DISK_H1440_FMT_GAP 0x6C - -/* Parameters for a 1.44 3.5" drive */ -#define DRIVE_H1440_MAX_DTR 500 -#define DRIVE_H1440_HLT 16 /* ms */ -#define DRIVE_H1440_HUT 16 /* ms */ -#define DRIVE_H1440_SRT 4000 /* us */ -#define DRIVE_H1440_SPINUP 400 /* ms */ -#define DRIVE_H1440_SPINDOWN 3000 /* ms */ -#define DRIVE_H1440_SPINDOWN_OFFSET 10 -#define DRIVE_H1440_SELECT_DELAY 20 /* ms */ -#define DRIVE_H1440_RPS 5 -#define DRIVE_H1440_TRACKS 83 -#define DRIVE_H1440_TIMEOUT 3000 /* ms */ -#define DRIVE_H1440_INTERLEAVE_SECT 20 - -/* Floppy drive configuration */ -#define FIFO_DEPTH 10 -#define USE_IMPLIED_SEEK 0 -#define USE_FIFO 1 -#define FIFO_THRESHOLD 10 -#define TRACK_PRECOMPENSATION 0 - -#define SLOW_FLOPPY 0 - -#define FD_RESET_DELAY 20 /* microseconds */ - -/* - * FDC state - */ -struct drive_state { - unsigned track; -} drive_state[1]; - -struct floppy_fdc_state { - int in_sync; - int spec1; /* spec1 value last used */ - int spec2; /* spec2 value last used */ - unsigned dtr; - unsigned char dor; - unsigned char version; /* FDC version code */ -} fdc_state; - - - -/* Synchronization of FDC access. */ -#define FD_COMMAND_NONE -1 -#define FD_COMMAND_ERROR 2 -#define FD_COMMAND_OKAY 3 - -/* - * globals used by 'result()' - */ -#define MAX_REPLIES 16 - -static void show_floppy(void); -static void floppy_reset(void); - - -static int set_dor(char mask, char data) -{ - unsigned char newdor,olddor; - - olddor = fdc_state.dor; - newdor = (olddor & mask) | data; - if (newdor != olddor){ - fdc_state.dor = newdor; - outb(newdor, FD_DOR); - } - return olddor; -} - - -static void bounce_motor(void) -{ - /* Bounce the drive motor... */ - outb(fdc_state.dor & ~(0x10<> 2) & 1; - int status; - unsigned new_dor; - if (drive > 3) { - printf("bad drive value\n"); - return; - } - if (fdc != 0) { - printf("bad fdc value\n"); - return; - } - drive &= 3; -#if 0 - new_dor = 8; /* Enable the controller */ -#else - new_dor = 0; /* Don't enable DMA on the controller */ -#endif - new_dor |= (1 << (drive + 4)); /* Spinup the selected drive */ - new_dor |= drive; /* Select the drive for commands as well */ - set_dor(0xc, new_dor); - - mdelay(DRIVE_H1440_SPINUP); - - status = inb(FD_STATUS); -#ifdef MDEBUG - printf("set_drive status = %hx, new_dor = %hx\n", status, new_dor); -#endif - if (status != STATUS_READY) { - printf("set_drive bad status\n"); - } -} - - -/* Disable the motor for a given floppy drive */ -static void floppy_motor_off(int drive) -{ - unsigned mask; -#ifdef MDEBUG - printf("floppy_motor_off\n"); -#endif - /* fix the number of drives */ - drive &= 3; - /* Clear the bit for the drive we care about */ - mask = 0xff; - mask &= ~(1 << (drive +4)); - /* Now clear the bit in the Digital Output Register */ - set_dor(mask, 0); -} - -/* Set the FDC's data transfer rate on behalf of the specified drive. - * NOTE: with 82072/82077 FDCs, changing the data rate requires a reissue - * of the specify command (i.e. using the fdc_specify function). - */ -static void fdc_dtr(unsigned rate) -{ - rate &= 3; - /* If data rate not already set to desired value, set it. */ - if (fdc_state.in_sync && (rate == fdc_state.dtr)) - return; - - /* Set dtr */ - outb(rate, FD_DCR); - - /* TODO: some FDC/drive combinations (C&T 82C711 with TEAC 1.2MB) - * need a stabilization period of several milliseconds to be - * enforced after data rate changes before R/W operations. - * Pause 5 msec to avoid trouble. (Needs to be 2 jiffies) - */ - fdc_state.dtr = rate & 3; - mdelay(5); -} /* fdc_dtr */ - -static int fdc_configure(int use_implied_seek, int use_fifo, - unsigned fifo_threshold, unsigned precompensation) -{ - unsigned config_bits; - unsigned char cmd[4]; - /* 0 EIS EFIFO POLL FIFOOTHR[4] */ - - /* santize parameters */ - config_bits = fifo_threshold & 0xf; - config_bits |= (1 << 4); /* Always disable background floppy poll */ - config_bits |= (!use_fifo) << 5; - config_bits |= (!!use_implied_seek) << 6; - - precompensation &= 0xff; /* pre-compensation from track 0 upwards */ - - cmd[0] = FD_CONFIGURE; - cmd[1] = 0; - cmd[2] = config_bits; - cmd[3] = precompensation; - - /* Turn on FIFO */ - if (output_new_command(cmd, 4) < 0) - return 0; - return 1; -} - -#define NOMINAL_DTR 500 -/* Issue a "SPECIFY" command to set the step rate time, head unload time, - * head load time, and DMA disable flag to values needed by floppy. - * - * The value "dtr" is the data transfer rate in Kbps. It is needed - * to account for the data rate-based scaling done by the 82072 and 82077 - * FDC types. This parameter is ignored for other types of FDCs (i.e. - * 8272a). - * - * Note that changing the data transfer rate has a (probably deleterious) - * effect on the parameters subject to scaling for 82072/82077 FDCs, so - * fdc_specify is called again after each data transfer rate - * change. - * - * srt: 1000 to 16000 in microseconds - * hut: 16 to 240 milliseconds - * hlt: 2 to 254 milliseconds - * - * These values are rounded up to the next highest available delay time. - */ -static void fdc_specify( - unsigned head_load_time, unsigned head_unload_time, unsigned step_rate) -{ - unsigned char cmd[3]; - unsigned long srt, hlt, hut; - unsigned long dtr = NOMINAL_DTR; - unsigned long scale_dtr = NOMINAL_DTR; - int hlt_max_code = 0x7f; - int hut_max_code = 0xf; - -#ifdef MDEBUG - printf("fdc_specify\n"); -#endif - - switch (DISK_H1440_RATE & 0x03) { - case 3: - dtr = 1000; - break; - case 1: - dtr = 300; - if (fdc_state.version >= FDC_82078) { - unsigned char cmd[3]; - /* chose the default rate table, not the one - * where 1 = 2 Mbps */ - cmd[0] = FD_DRIVESPEC; - cmd[1] = FD_DRIVE & 3; - cmd[2] = 0xc0; - output_new_command(cmd,3); - /* FIXME how do I handle errors here? */ - } - break; - case 2: - dtr = 250; - break; - } - - - if (fdc_state.version >= FDC_82072) { - scale_dtr = dtr; - hlt_max_code = 0x00; /* 0==256msec*dtr0/dtr (not linear!) */ - hut_max_code = 0x0; /* 0==256msec*dtr0/dtr (not linear!) */ - } - - /* Convert step rate from microseconds to milliseconds and 4 bits */ - srt = 16 - (step_rate*scale_dtr/1000 + NOMINAL_DTR - 1)/NOMINAL_DTR; - if (SLOW_FLOPPY) { - srt = srt / 4; - } - if (srt > 0xf) { - srt = 0xf; - } - if (srt < 0 ) { - srt = 0; - } - - hlt = (head_load_time*scale_dtr/2 + NOMINAL_DTR - 1)/NOMINAL_DTR; - if (hlt < 0x01) - hlt = 0x01; - else if (hlt > 0x7f) - hlt = hlt_max_code; - - hut = (head_unload_time*scale_dtr/16 + NOMINAL_DTR - 1)/NOMINAL_DTR; - if (hut < 0x1) - hut = 0x1; - else if (hut > 0xf) - hut = hut_max_code; - - cmd[0] = FD_SPECIFY; - cmd[1] = (srt << 4) | hut; - cmd[2] = (hlt << 1) | 1; /* Always disable DMA */ - - /* If these parameters did not change, just return with success */ - if (!fdc_state.in_sync || fdc_state.spec1 != cmd[1] || fdc_state.spec2 != cmd[2]) { - /* Go ahead and set spec1 and spec2 */ - output_command(cmd, 3); - /* FIXME how do I handle errors here... */ -#ifdef MDEBUG - printf("FD_SPECIFY(%hx, %hx)\n", cmd[1], cmd[2]); -#endif - } -} /* fdc_specify */ - - -/* - * reset is done by pulling bit 2 of DOR low for a while (old FDCs), - * or by setting the self clearing bit 7 of STATUS (newer FDCs) - */ -static void reset_fdc(void) -{ - unsigned char reply[MAX_REPLIES]; - - fdc_state.in_sync = 0; - - /* Pseudo-DMA may intercept 'reset finished' interrupt. */ - /* Irrelevant for systems with true DMA (i386). */ - - if (fdc_state.version >= FDC_82072A) - outb(0x80 | (fdc_state.dtr &3), FD_DSR); - else { - outb(fdc_state.dor & ~DOR_NO_RESET, FD_DOR); - udelay(FD_RESET_DELAY); - outb(fdc_state.dor, FD_DOR); - } - result(reply, MAX_REPLIES); -} - - - -static void show_floppy(void) -{ - -#ifdef MDEBUG - printf("\n"); - printf("floppy driver state\n"); - printf("-------------------\n"); - - printf("fdc_bytes: %hx %hx xx %hx %hx %hx xx %hx\n", - inb(FD_BASE + 0), inb(FD_BASE + 1), - inb(FD_BASE + 3), inb(FD_BASE + 4), inb(FD_BASE + 5), - inb(FD_BASE + 7)); - - printf("status=%x\n", inb(FD_STATUS)); - printf("\n"); -#endif -} - -static void floppy_recalibrate(void) -{ - unsigned char cmd[2]; - unsigned char reply[MAX_REPLIES]; - int nr, success; - success = 0; - do { -#ifdef MDEBUG - printf("floppy_recalibrate\n"); -#endif - /* Send the recalibrate command to the controller. - * We don't have interrupts or anything we can poll - * so we have to guess when it is done. - */ - cmd[0] = FD_RECALIBRATE; - cmd[1] = 0; - if (output_command(cmd, 2) < 0) - continue; - - /* Sleep for the maximum time the recalibrate command - * can run. - */ - mdelay(80*DRIVE_H1440_SRT/1000); - - /* Now call FD_SENSEI to end the command - * and collect up the reply. - */ - if (output_byte(FD_SENSEI) < 0) - continue; - nr = result(reply, MAX_REPLIES); - - /* Now see if we have succeeded in our seek */ - success = - /* We have the right size result */ - (nr == 2) && - /* The command didn't terminate in error */ - ((reply[0] & ST0_INTR) == ST0_INTR_OK) && - /* We finished a seek */ - (reply[0] & ST0_SE) && - /* We are at cylinder 0 */ - (reply[1] == 0); - } while(!success); - /* Remember we are at track 0 */ - drive_state[FD_DRIVE].track = 0; -} - - -static int __floppy_seek(unsigned track) -{ - unsigned char cmd[3]; - unsigned char reply[MAX_REPLIES]; - int nr, success; - unsigned distance, old_track; - - /* Look up the old track and see if we need to - * do anything. - */ - old_track = drive_state[FD_DRIVE].track; - if (old_track == track) { - return 1; - } - - /* Compute the distance we are about to move, - * We need to know this so we know how long to sleep... - */ - distance = (old_track > track)?(old_track - track):(track - old_track); - distance += 1; - - - /* Send the seek command to the controller. - * We don't have interrupts or anything we can poll - * so we have to guess when it is done. - */ - cmd[0] = FD_SEEK; - cmd[1] = FD_DRIVE; - cmd[2] = track; - if (output_command(cmd, 3) < 0) - return 0; - - /* Sleep for the time it takes to step through distance tracks. - */ - mdelay(distance*DRIVE_H1440_SRT/1000); - - /* Now call FD_SENSEI to end the command - * and collect up the reply. - */ - cmd[0] = FD_SENSEI; - if (output_command(cmd, 1) < 0) - return 0; - nr = result(reply, MAX_REPLIES); - - /* Now see if we have succeeded in our seek */ - success = - /* We have the right size result */ - (nr == 2) && - /* The command didn't terminate in error */ - ((reply[0] & ST0_INTR) == ST0_INTR_OK) && - /* We finished a seek */ - (reply[0] & ST0_SE) && - /* We are at cylinder 0 */ - (reply[1] == track); - if (success) - drive_state[FD_DRIVE].track = track; - else { -#ifdef MDEBUG - printf("seek failed\n"); - printf("nr = %d\n", nr); - printf("ST0 = %hx\n", reply[0]); - printf("PCN = %hx\n", reply[1]); - printf("status = %d\n", inb(FD_STATUS)); -#endif - } - return success; -} - -static int floppy_seek(unsigned track) -{ - unsigned old_track; - int result; - /* assume success */ - result = 1; - - /* Look up the old track and see if we need to - * do anything. - */ - old_track = drive_state[FD_DRIVE].track; - if (old_track == track) { - return result; - } - /* For some reason seeking many tracks at once is - * problematic so only seek a single track at a time. - */ - while(result && (old_track > track)) { - old_track--; - result = __floppy_seek(old_track); - } - while(result && (track > old_track)) { - old_track++; - result = __floppy_seek(old_track); - } - return result; -} - -static int read_ok(unsigned head) -{ - unsigned char results[7]; - int result_ok; - int nr; - - /* read back the read results */ - nr = result(results, 7); - - /* Now see if they say we are o.k. */ - result_ok = 0; - /* Are my result bytes o.k.? */ - if (nr == 7) { - /* Are we o.k. */ - if ((results[0] & ST0_INTR) == ST0_INTR_OK) { - result_ok = 1; - } - /* Or did we get just an overflow error */ - else if (((results[0] & ST0_INTR) == ST0_INTR_ERROR) && - (results[1]== ST1_OR) && - (results[2] == 0)) { - result_ok = 1; - } - /* Verify the reply had the correct head */ - if (((results[0] & ST0_HA) >> 2) != head) { - result_ok = 0; - } - /* Verify the reply had the correct drive */ - if (((results[0] & ST0_DS) != FD_DRIVE)) { - result_ok = 0; - } - } - if (!result_ok) { -#ifdef MDEBUG - printf("result_bytes = %d\n", nr); - printf("ST0 = %hx\n", results[0]); - printf("ST1 = %hx\n", results[1]); - printf("ST2 = %hx\n", results[2]); - printf(" C = %hx\n", results[3]); - printf(" H = %hx\n", results[4]); - printf(" R = %hx\n", results[5]); - printf(" N = %hx\n", results[6]); -#endif - } - return result_ok; -} - -static int floppy_read_sectors( - char *dest, unsigned byte_offset, unsigned length, - unsigned sector, unsigned head, unsigned track) -{ - /* MT == Multitrack */ - /* MFM == MFM or FM Mode */ - /* SK == Skip deleted data addres Mark */ - /* HDS == Head number select */ - /* DS0 == Disk Drive Select 0 */ - /* DS1 == Disk Drive Select 1 */ - /* C == Cylinder number 0 - 255 */ - /* H == Head number */ - /* R == Record */ - /* N == The number of data bytes written in a sector */ - /* EOT == End of Track */ - /* GPL == Gap Length */ - /* DTL == Data Length */ - /* MT MFM SK 0 1 1 0 0 */ - /* 0 0 0 0 0 HDS DS1 DS0 */ - /* C, H, R, N, EOT, GPL, DTL */ - - int i, status, result_ok; - int max_bytes, bytes_read; - int ret; - unsigned char cmd[9]; - unsigned end_offset; - - end_offset = byte_offset + length; - max_bytes = 512*(DISK_H1440_SECT - sector + 1); - - if (byte_offset >= max_bytes) { - return 0; - } - cmd[0] = FD_READ | (((DISK_H1440_HEAD ==2)?1:0) << 6); - cmd[1] = (head << 2) | FD_DRIVE; - cmd[2] = track; - cmd[3] = head; - cmd[4] = sector; - cmd[5] = 2; /* 2^N *128 == Sector size. Hard coded to 512 bytes */ - cmd[6] = DISK_H1440_SECT; - cmd[7] = DISK_H1440_GAP; - cmd[8] = 0xff; - - /* Output the command bytes */ - if (output_command(cmd, 9) < 0) - return -1; - - /* The execution stage begins when STATUS_READY&STATUS_NON_DMA is set */ - do { -#if 1 - poll_interruptions(); -#endif - status = inb(FD_STATUS); - status &= STATUS_READY | STATUS_NON_DMA; - } while(status != (STATUS_READY|STATUS_NON_DMA)); - - for(i = 0; i < max_bytes; i++) { - unsigned char byte; - if ((status = wait_til_ready()) < 0) { - break; - } - status &= STATUS_READY|STATUS_DIR|STATUS_NON_DMA; - if (status != (STATUS_READY|STATUS_DIR|STATUS_NON_DMA)) { - break; - } - byte = inb(FD_DATA); - if ((i >= byte_offset) && (i < end_offset)) { - dest[i - byte_offset] = byte; - } - } - bytes_read = i; - - /* The result stage begins when STATUS_NON_DMA is cleared */ - while((status = inb(FD_STATUS)) & STATUS_NON_DMA) { - /* We get extra bytes in the fifo past - * the end of the sector and drop them on the floor. - * Otherwise the fifo is polluted. - */ - inb(FD_DATA); - } - /* Did I get an error? */ - result_ok = read_ok(head); - /* Did I read enough bytes? */ - ret = -1; - if (result_ok && (bytes_read == max_bytes)) { - ret = bytes_read - byte_offset; - if (ret > length) { - ret = length; - } - } - - if (ret < 0) { -#ifdef MDEBUG - printf("ret = %d\n", ret); - printf("bytes_read = %d\n", bytes_read); - printf("status = %x\n", status); -#endif - } - return ret; -} - -static int floppy_read(struct disk *disk, sector_t base_sector) -{ - unsigned head, track, sector, byte_offset; - unsigned long block; - int ret; - - disk->sector = 0; - disk->bytes = 0; - - block = base_sector; - block /= disk->sectors_per_read; - - /* break the offset up into sectors and bytes */ - byte_offset = 0; - - /* Find the disk block we are starting with... */ - sector = 1; - head = block % DISK_H1440_HEAD; - track = (block / DISK_H1440_HEAD)% DISK_H1440_TRACK; - - /* First seek to our start track */ - if (!floppy_seek(track)) { - return -1; - } - /* Then read the data */ - ret = floppy_read_sectors( - disk->buffer, byte_offset, SECTOR_SIZE*disk->sectors_per_read, sector, head, track); - if (ret >= 0) { - disk->sector = block * disk->sectors_per_read; - disk->bytes = SECTOR_SIZE * disk->sectors_per_read; - return ret; - } - /* If we failed reset the fdc... */ - floppy_reset(); - return -1; -} - -/* Determine the floppy disk controller type */ -/* This routine was written by David C. Niemi */ -static char get_fdc_version(void) -{ - int bytes, ret; - unsigned char reply_buffer[MAX_REPLIES]; - - ret = output_byte(FD_DUMPREGS); /* 82072 and better know DUMPREGS */ - if (ret < 0) - return FDC_NONE; - if ((bytes = result(reply_buffer, MAX_REPLIES)) <= 0x00) - return FDC_NONE; /* No FDC present ??? */ - if ((bytes==1) && (reply_buffer[0] == 0x80)){ - printf("FDC %d is an 8272A\n"); - return FDC_8272A; /* 8272a/765 don't know DUMPREGS */ - } - if (bytes != 10) { -#ifdef MDEBUG - printf("init: DUMPREGS: unexpected return of %d bytes.\n", - bytes); -#endif - return FDC_UNKNOWN; - } - if (!fdc_configure(USE_IMPLIED_SEEK, USE_FIFO, FIFO_THRESHOLD, - TRACK_PRECOMPENSATION)) { - printf("FDC is an 82072\n"); - return FDC_82072; /* 82072 doesn't know CONFIGURE */ - } - - output_byte(FD_PERPENDICULAR); - if (need_more_output() == MORE_OUTPUT) { - output_byte(0); - } else { - printf("FDC is an 82072A\n"); - return FDC_82072A; /* 82072A as found on Sparcs. */ - } - - output_byte(FD_UNLOCK); - bytes = result(reply_buffer, MAX_REPLIES); - if ((bytes == 1) && (reply_buffer[0] == 0x80)){ - printf("FDC is a pre-1991 82077\n"); - return FDC_82077_ORIG; /* Pre-1991 82077, doesn't know - * LOCK/UNLOCK */ - } - if ((bytes != 1) || (reply_buffer[0] != 0x00)) { -#ifdef MDEBUG - printf("FDC init: UNLOCK: unexpected return of %d bytes.\n", - bytes); -#endif - return FDC_UNKNOWN; - } - output_byte(FD_PARTID); - bytes = result(reply_buffer, MAX_REPLIES); - if (bytes != 1) { -#ifdef MDEBUG - printf("FDC init: PARTID: unexpected return of %d bytes.\n", - bytes); -#endif - return FDC_UNKNOWN; - } - if (reply_buffer[0] == 0x80) { - printf("FDC is a post-1991 82077\n"); - return FDC_82077; /* Revised 82077AA passes all the tests */ - } - switch (reply_buffer[0] >> 5) { - case 0x0: - /* Either a 82078-1 or a 82078SL running at 5Volt */ - printf("FDC is an 82078.\n"); - return FDC_82078; - case 0x1: - printf("FDC is a 44pin 82078\n"); - return FDC_82078; - case 0x2: - printf("FDC is a S82078B\n"); - return FDC_S82078B; - case 0x3: - printf("FDC is a National Semiconductor PC87306\n"); - return FDC_87306; - default: - printf("FDC init: 82078 variant with unknown PARTID=%d.\n", - reply_buffer[0] >> 5); - return FDC_82078_UNKN; - } -} /* get_fdc_version */ - - -static int floppy_init(void) -{ -#ifdef MDEBUG - printf("floppy_init\n"); -#endif - fdc_state.in_sync = 0; - fdc_state.spec1 = -1; - fdc_state.spec2 = -1; - fdc_state.dtr = -1; - fdc_state.dor = DOR_NO_RESET; - fdc_state.version = FDC_UNKNOWN; - reset_fdc(); - /* Try to determine the floppy controller type */ - fdc_state.version = get_fdc_version(); - if (fdc_state.version == FDC_NONE) { - return -1; - } - floppy_reset(); -#ifdef MDEBUG - printf("fdc_state.version = %x\n", fdc_state.version); -#endif - return 0; -} - -static void floppy_reset(void) -{ -#ifdef MDEBUG - printf("floppy_reset\n"); -#endif - floppy_motor_off(FD_DRIVE); - reset_fdc(); - fdc_dtr(DISK_H1440_RATE); - /* program data rate via ccr */ - collect_interrupt(); - fdc_configure(USE_IMPLIED_SEEK, USE_FIFO, FIFO_THRESHOLD, - TRACK_PRECOMPENSATION); - fdc_specify(DRIVE_H1440_HLT, DRIVE_H1440_HUT, DRIVE_H1440_SRT); - set_drive(FD_DRIVE); - floppy_recalibrate(); - fdc_state.in_sync = 1; -} - -static void floppy_fini(struct dev *dev __unused) -{ - /* Disable the floppy and the floppy drive controller */ - set_dor(0, 0); -} - -static int floppy_probe(struct dev *dev, unsigned short *probe_addrs) -{ - struct disk *disk = (struct disk *)dev; - unsigned short addr; - int index; - - if (!probe_addrs || !*probe_addrs) - return 0; - index = dev->index +1; - if (dev->how_probe == PROBE_AWAKE) { - index--; - } - for(; (index >= 0) && (addr = probe_addrs[index]); index++) { - /* FIXME handle multiple drives per controller */ - /* FIXME test to see if I have a drive or a disk in - * the driver during the probe routine. - */ - /* FIXME make this work under the normal bios */ - FD_BASE = addr; - if (floppy_init() != 0) { - /* nothing at this address */ - continue; - } - /* O.k. I have a floppy controller */ - disk->hw_sector_size = SECTOR_SIZE; - disk->sectors_per_read = DISK_H1440_SECT; - disk->sectors = DISK_H1440_HEAD*DISK_H1440_TRACK*DISK_H1440_SECT; - dev->index = index; - dev->disable = floppy_fini; - disk->read = floppy_read; - return 1; - } - dev->index = -1; - return 0; -} - -static unsigned short floppy_ioaddrs[] = -{ - 0x3F0, 0x370, 0 -}; -ISA_ROM("pc_floppy", "Generic PC Floppy support") - -static struct isa_driver floppy_isa_driver __isa_driver = { - .type = FLOPPY_DRIVER, - .name = "PC flopyy", - .probe = floppy_probe, - .ioaddrs = floppy_ioaddrs, -};