/* vim: noexpandtab tabstop=4 shiftwidth=4 * * ToAruOS PCI Initialization */ #include #include ide_channel_regs_t ide_channels[2]; ide_device_t ide_devices[4]; uint8_t ide_buf[2048] = {0}; uint8_t ide_irq_invoked = 0; uint8_t atapi_packet[12] = {0xA8, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}; void ide_detect() { } void ide_read_sector(uint16_t bus, uint8_t slave, uint32_t lba, char * buf) { IRQ_OFF; outportb(bus + ATA_REG_FEATURES, 0x00); outportb(bus + ATA_REG_SECCOUNT0, 1); outportb(bus + ATA_REG_HDDEVSEL, 0xe0 | slave << 4 | (lba & 0x0f000000) >> 24); outportb(bus + ATA_REG_LBA0, (lba & 0x000000ff) >> 0); outportb(bus + ATA_REG_LBA1, (lba & 0x0000ff00) >> 8); outportb(bus + ATA_REG_LBA2, (lba & 0x00ff0000) >> 16); outportb(bus + ATA_REG_COMMAND, ATA_CMD_READ_PIO); uint8_t status = 0; while ((status = inportb(bus + 0x07)) & 0x80); for (volatile int i = 0; i < 512; i += 2) { uint16_t s = inports(0x1f0); buf[i] = s & 0xFF; buf[i+1] = (s & 0xFF00) >> 8; } outportb(0x177, 0xe7); IRQ_ON; } void ide_write_sector(uint16_t bus, uint8_t slave, uint32_t lba, char * buf) { IRQ_OFF; outportb(bus + ATA_REG_FEATURES, 0x00); outportb(bus + ATA_REG_SECCOUNT0, 1); outportb(bus + ATA_REG_HDDEVSEL, 0xe0 | slave << 4 | (lba & 0x0f000000) >> 24); outportb(bus + ATA_REG_LBA0, (lba & 0x000000ff) >> 0); outportb(bus + ATA_REG_LBA1, (lba & 0x0000ff00) >> 8); outportb(bus + ATA_REG_LBA2, (lba & 0x00ff0000) >> 16); outportb(bus + ATA_REG_COMMAND, ATA_CMD_WRITE_PIO); uint8_t status = 0; while ((status = inportb(bus + 0x07)) & 0x80); for (volatile int i = 0; i < 512; i+=2) { uint16_t s = (buf[i+1] << 8) + (buf[i]); outports(bus, s); } outportb(bus + 0x07, ATA_CMD_CACHE_FLUSH); outportb(0x177, 0xe7); IRQ_ON; }