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Diffstat (limited to 'src/devices/machine/idehd.cpp')
-rw-r--r-- | src/devices/machine/idehd.cpp | 879 |
1 files changed, 0 insertions, 879 deletions
diff --git a/src/devices/machine/idehd.cpp b/src/devices/machine/idehd.cpp deleted file mode 100644 index e442e4475f6..00000000000 --- a/src/devices/machine/idehd.cpp +++ /dev/null @@ -1,879 +0,0 @@ -// license:BSD-3-Clause -// copyright-holders:smf -#include "emu.h" -#include "idehd.h" - -/*************************************************************************** - DEBUGGING -***************************************************************************/ - -#define VERBOSE 0 -#define PRINTF_IDE_COMMANDS 0 -#define PRINTF_IDE_PASSWORD 0 - -#define LOGPRINT(x) do { if (VERBOSE) logerror x; if (PRINTF_IDE_COMMANDS) osd_printf_debug x; } while (0) - -#define TIME_PER_SECTOR_WRITE (attotime::from_usec(100)) -#define TIME_PER_ROTATION (attotime::from_hz(5400/60)) -#define TIME_BETWEEN_SECTORS (attotime::from_nsec(400)) - -#define TIME_FULL_STROKE_SEEK (attotime::from_usec(13000)) -#define TIME_AVERAGE_ROTATIONAL_LATENCY (attotime::from_usec(1300)) - -ata_mass_storage_device::ata_mass_storage_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, uint32_t clock) - : ata_hle_device(mconfig, type, tag, owner, clock), - m_can_identify_device(0), - m_num_cylinders(0), - m_num_sectors(0), - m_num_heads(0), m_cur_lba(0), m_block_count(0), m_sectors_until_int(0), m_master_password_enable(0), m_user_password_enable(0), - m_master_password(nullptr), - m_user_password(nullptr), - m_dma_transfer_time(attotime::zero) -{ -} - -/************************************* - * - * Compute the LBA address - * - *************************************/ - -uint32_t ata_mass_storage_device::lba_address() -{ - /* LBA direct? */ - if (m_device_head & IDE_DEVICE_HEAD_L) - return ((m_device_head & IDE_DEVICE_HEAD_HS) << 24) | (m_cylinder_high << 16) | (m_cylinder_low << 8) | m_sector_number; - - /* standard CHS */ - else - return (((((m_cylinder_high << 8) | m_cylinder_low) * m_num_heads) + (m_device_head & IDE_DEVICE_HEAD_HS)) * m_num_sectors) + m_sector_number - 1; -} - - -/************************************* - * - * Build a features page - * - *************************************/ - -static void swap_strncpy(uint16_t *dst, const char *src, int field_size_in_words) -{ - for (int i = 0; i < field_size_in_words; i++) - { - uint16_t d; - - if (*src) - { - d = *(src++) << 8; - } - else - { - d = ' ' << 8; - } - - if (*src) - { - d |= *(src++); - } - else - { - d |= ' '; - } - - dst[i] = d; - } - - assert(*(src) == 0); -} - - -void ata_mass_storage_device::ide_build_identify_device() -{ - memset(m_identify_buffer, 0, sizeof(m_identify_buffer)); - int total_sectors = m_num_cylinders * m_num_heads * m_num_sectors; - - /* basic geometry */ - m_identify_buffer[0] = 0x045a; /* 0: configuration bits */ - m_identify_buffer[1] = m_num_cylinders; /* 1: logical cylinders */ - m_identify_buffer[2] = 0; /* 2: reserved */ - m_identify_buffer[3] = m_num_heads; /* 3: logical heads */ - m_identify_buffer[4] = 0; /* 4: vendor specific (obsolete) */ - m_identify_buffer[5] = 0; /* 5: vendor specific (obsolete) */ - m_identify_buffer[6] = m_num_sectors; /* 6: logical sectors per logical track */ - m_identify_buffer[7] = 0; /* 7: vendor-specific */ - m_identify_buffer[8] = 0; /* 8: vendor-specific */ - m_identify_buffer[9] = 0; /* 9: vendor-specific */ - swap_strncpy(&m_identify_buffer[10], /* 10-19: serial number */ - "00000000000000000000", 10); - m_identify_buffer[20] = 0; /* 20: vendor-specific */ - m_identify_buffer[21] = 0; /* 21: vendor-specific */ - m_identify_buffer[22] = 4; /* 22: # of vendor-specific bytes on read/write long commands */ - swap_strncpy(&m_identify_buffer[23], /* 23-26: firmware revision */ - "1.0", 4); - swap_strncpy(&m_identify_buffer[27], /* 27-46: model number */ - "MAME Compressed Hard Disk", 20); - m_identify_buffer[47] = 0x8010; /* 47: read/write multiple support, value from Seagate Quantum Fireball */ - m_identify_buffer[48] = 0; /* 48: reserved */ - m_identify_buffer[49] = 0x0f03; /* 49: capabilities */ - m_identify_buffer[50] = 0; /* 50: reserved */ - m_identify_buffer[51] = 2; /* 51: PIO data transfer cycle timing mode */ - m_identify_buffer[52] = 2; /* 52: single word DMA transfer cycle timing mode */ - m_identify_buffer[53] = 3; /* 53: field validity */ - m_identify_buffer[54] = m_num_cylinders; /* 54: number of current logical cylinders */ - m_identify_buffer[55] = m_num_heads; /* 55: number of current logical heads */ - m_identify_buffer[56] = m_num_sectors; /* 56: number of current logical sectors per track */ - m_identify_buffer[57] = total_sectors & 0xffff; /* 57-58: current capacity in sectors (ATA-1 through ATA-5; obsoleted in ATA-6) */ - m_identify_buffer[58] = total_sectors >> 16; - m_identify_buffer[59] = 0; /* 59: multiple sector timing */ - m_identify_buffer[60] = total_sectors & 0xffff; /* 60-61: total user addressable sectors for LBA mode (ATA-1 through ATA-7) */ - m_identify_buffer[61] = total_sectors >> 16; - m_identify_buffer[62] = 0x0007; /* 62: single word dma transfer */ - m_identify_buffer[63] = 0x0407; /* 63: multiword DMA transfer */ - m_identify_buffer[64] = 0x0003; /* 64: flow control PIO transfer modes supported */ - m_identify_buffer[65] = 0x78; /* 65: minimum multiword DMA transfer cycle time per word */ - m_identify_buffer[66] = 0x78; /* 66: mfr's recommended multiword DMA transfer cycle time */ - m_identify_buffer[67] = 0x014d; /* 67: minimum PIO transfer cycle time without flow control */ - m_identify_buffer[68] = 0x78; /* 68: minimum PIO transfer cycle time with IORDY */ - m_identify_buffer[69] = 0x00; /* 69-70: reserved */ - m_identify_buffer[71] = 0x00; /* 71: reserved for IDENTIFY PACKET command */ - m_identify_buffer[72] = 0x00; /* 72: reserved for IDENTIFY PACKET command */ - m_identify_buffer[73] = 0x00; /* 73: reserved for IDENTIFY PACKET command */ - m_identify_buffer[74] = 0x00; /* 74: reserved for IDENTIFY PACKET command */ - m_identify_buffer[75] = 0x00; /* 75: queue depth */ - m_identify_buffer[76] = 0x00; /* 76-79: reserved */ - m_identify_buffer[80] = 0x00; /* 80: major version number */ - m_identify_buffer[81] = 0x00; /* 81: minor version number */ - m_identify_buffer[82] = 0x00; /* 82: command set supported */ - m_identify_buffer[83] = 0x00; /* 83: command sets supported */ - m_identify_buffer[84] = 0x00; /* 84: command set/feature supported extension */ - m_identify_buffer[85] = 0x00; /* 85: command set/feature enabled */ - m_identify_buffer[86] = 0x00; /* 86: command set/feature enabled */ - m_identify_buffer[87] = 0x00; /* 87: command set/feature default */ - m_identify_buffer[88] = 0x00; /* 88: additional DMA modes (ultra dma) */ - m_identify_buffer[89] = 0x00; /* 89: time required for security erase unit completion */ - m_identify_buffer[90] = 0x00; /* 90: time required for enhanced security erase unit completion */ - m_identify_buffer[91] = 0x00; /* 91: current advanced power management value */ - m_identify_buffer[92] = 0x00; /* 92: master password revision code */ - m_identify_buffer[93] = 0x00; /* 93: hardware reset result */ - m_identify_buffer[94] = 0x00; /* 94: acoustic management values */ - m_identify_buffer[95] = 0x00; /* 95-99: reserved */ - m_identify_buffer[100] = total_sectors & 0xffff; /* 100-103: maximum 48-bit LBA */ - m_identify_buffer[101] = total_sectors >> 16; - m_identify_buffer[102] = 0x00; - m_identify_buffer[103] = 0x00; - m_identify_buffer[104] = 0x00; /* 104-126: reserved */ - m_identify_buffer[127] = 0x00; /* 127: removable media status notification */ - m_identify_buffer[128] = 0x00; /* 128: security status */ - m_identify_buffer[129] = 0x00; /* 129-159: vendor specific */ - m_identify_buffer[160] = 0x00; /* 160: CFA power mode 1 */ - m_identify_buffer[161] = 0x00; /* 161-175: reserved for CompactFlash */ - m_identify_buffer[176] = 0x00; /* 176-205: current media serial number */ - m_identify_buffer[206] = 0x00; /* 206-254: reserved */ - m_identify_buffer[255] = 0x00; /* 255: integrity word */ - - if (total_sectors >= 16514064) - { - /// CHS limit - m_identify_buffer[1] = 16383; /* 1: logical cylinders */ - m_identify_buffer[3] = 16; /* 3: logical heads */ - m_identify_buffer[6] = 63; /* 6: logical sectors per logical track */ - m_identify_buffer[54] = 16383; /* 54: number of current logical cylinders */ - m_identify_buffer[55] = 16; /* 55: number of current logical heads */ - m_identify_buffer[56] = 63; /* 56: number of current logical sectors per track */ - m_identify_buffer[57] = 16514064 & 0xffff; /* 57-58: current capacity in sectors (ATA-1 through ATA-5; obsoleted in ATA-6) */ - m_identify_buffer[58] = 16514064 >> 16; - } - - if (total_sectors > 268435455) - { - /// LBA limit - m_identify_buffer[60] = 268435455 & 0xffff; /* 60-61: total user addressable sectors for LBA mode (ATA-1 through ATA-7) */ - m_identify_buffer[61] = 268435455 >> 16; - } -} - -//------------------------------------------------- -// device_start - device-specific startup -//------------------------------------------------- - -void ata_mass_storage_device::device_start() -{ - ata_hle_device::device_start(); - - save_item(NAME(m_can_identify_device)); - save_item(NAME(m_num_cylinders)); - save_item(NAME(m_num_sectors)); - save_item(NAME(m_num_heads)); - - save_item(NAME(m_cur_lba)); - save_item(NAME(m_sectors_until_int)); - save_item(NAME(m_master_password_enable)); - save_item(NAME(m_user_password_enable)); - save_item(NAME(m_block_count)); -} - -void ata_mass_storage_device::soft_reset() -{ - ata_hle_device::soft_reset(); - - m_cur_lba = 0; - m_status |= IDE_STATUS_DSC; - - m_master_password_enable = (m_master_password != nullptr); - m_user_password_enable = (m_user_password != nullptr); -} - -void ata_mass_storage_device::perform_diagnostic() -{ - if (m_can_identify_device) - m_error = IDE_ERROR_DIAGNOSTIC_PASSED; -} - -void ata_mass_storage_device::signature() -{ - m_sector_count = 1; - m_sector_number = 1; - m_cylinder_low = 0; - m_cylinder_high = 0; - m_device_head = 0; -} - -void ata_mass_storage_device::finished_command() -{ - int total_sectors = m_num_cylinders * m_num_heads * m_num_sectors; - - switch (m_command) - { - case IDE_COMMAND_IDENTIFY_DEVICE: - if (m_can_identify_device) - { - for( int w = 0; w < 256; w++ ) - { - m_buffer[w * 2] = m_identify_buffer[ w ] & 0xff; - m_buffer[(w * 2) + 1] = m_identify_buffer[ w ] >> 8; - } - - m_status |= IDE_STATUS_DRQ; - } - else - { - m_status |= IDE_STATUS_ERR; - m_error = IDE_ERROR_NONE; - } - - set_irq(ASSERT_LINE); - break; - - case IDE_COMMAND_SET_CONFIG: - set_geometry(m_sector_count,(m_device_head & IDE_DEVICE_HEAD_HS) + 1); - set_irq(ASSERT_LINE); - break; - - case IDE_COMMAND_READ_SECTORS: - case IDE_COMMAND_READ_SECTORS_NORETRY: - case IDE_COMMAND_READ_MULTIPLE: - case IDE_COMMAND_VERIFY_SECTORS: - case IDE_COMMAND_VERIFY_SECTORS_NORETRY: - case IDE_COMMAND_READ_DMA: - finished_read(); - break; - - case IDE_COMMAND_WRITE_SECTORS: - case IDE_COMMAND_WRITE_SECTORS_NORETRY: - case IDE_COMMAND_WRITE_MULTIPLE: - case IDE_COMMAND_WRITE_DMA: - finished_write(); - break; - - case IDE_COMMAND_RECALIBRATE: - set_irq(ASSERT_LINE); - break; - - case IDE_COMMAND_READ_NATIVE_MAX_ADDRESS: - m_buffer[0] = (total_sectors & 0xff000000) >> 24; - m_buffer[1] = (total_sectors & 0x00ff0000) >> 16; - m_buffer[2] = (total_sectors & 0x0000ff00) >> 8; - m_buffer[3] = (total_sectors & 0x000000ff); - set_irq(ASSERT_LINE); - break; - - default: - ata_hle_device::finished_command(); - break; - } -} - -/************************************* - * - * Advance to the next sector - * - *************************************/ - -void ata_mass_storage_device::next_sector() -{ - uint8_t cur_head = m_device_head & IDE_DEVICE_HEAD_HS; - - /* LBA direct? */ - if (m_device_head & IDE_DEVICE_HEAD_L) - { - m_sector_number++; - if (m_sector_number == 0) - { - m_cylinder_low++; - if (m_cylinder_low == 0) - { - m_cylinder_high++; - if (m_cylinder_high == 0) - cur_head++; - } - } - } - - /* standard CHS */ - else - { - /* sectors are 1-based */ - m_sector_number++; - if (m_sector_number > m_num_sectors) - { - /* heads are 0 based */ - m_sector_number = 1; - cur_head++; - if (cur_head >= m_num_heads) - { - cur_head = 0; - m_cylinder_low++; - if (m_cylinder_low == 0) - m_cylinder_high++; - } - } - } - - m_device_head = (m_device_head & ~IDE_DEVICE_HEAD_HS) | cur_head; - - m_cur_lba = lba_address(); -} - - - -/************************************* - * - * security error handling - * - *************************************/ - -void ata_mass_storage_device::security_error() -{ - /* set error state */ - m_status |= IDE_STATUS_ERR; - m_error = IDE_ERROR_NONE; - m_status &= ~IDE_STATUS_DRDY; -} - - - -/************************************* - * - * Sector reading - * - *************************************/ - -attotime ata_mass_storage_device::seek_time() -{ - int sectors_per_cylinder = m_num_heads * m_num_sectors; - - if (sectors_per_cylinder == 0 || m_num_cylinders == 0) - return attotime::zero; - - int new_lba = lba_address(); - int old_cylinder = m_cur_lba / sectors_per_cylinder; - int new_cylinder = new_lba / sectors_per_cylinder; - int diff = abs(old_cylinder - new_cylinder); - - m_cur_lba = new_lba; - - if (diff == 0) - return TIME_BETWEEN_SECTORS; - - attotime seek_time = (TIME_FULL_STROKE_SEEK * diff) / m_num_cylinders; - - return seek_time + TIME_AVERAGE_ROTATIONAL_LATENCY; -} - -void ata_mass_storage_device::fill_buffer() -{ - switch (m_command) - { - case IDE_COMMAND_IDENTIFY_DEVICE: - break; - - case IDE_COMMAND_READ_MULTIPLE: - /* if there is more data to read, keep going */ - if (m_sector_count > 0) - m_sector_count--; - - if (m_sector_count > 0) - { - // Read the next sector with no delay - finished_read(); - } - break; - - default: - /* if there is more data to read, keep going */ - if (m_sector_count > 0) - m_sector_count--; - - if (m_sector_count > 0) - { - set_dasp(ASSERT_LINE); - if (m_command == IDE_COMMAND_READ_DMA) - start_busy(TIME_BETWEEN_SECTORS + m_dma_transfer_time, PARAM_COMMAND); - else - start_busy(TIME_BETWEEN_SECTORS, PARAM_COMMAND); - } - break; - } -} - - -void ata_mass_storage_device::finished_read() -{ - int lba = lba_address(), read_status; - - set_dasp(CLEAR_LINE); - - /* now do the read */ - read_status = read_sector(lba, &m_buffer[0]); - - /* if we succeeded, advance to the next sector and set the nice bits */ - if (read_status) - { - /* advance the pointers, unless this is the last sector */ - /* Gauntlet: Dark Legacy checks to make sure we stop on the last sector */ - if (m_sector_count != 1) - next_sector(); - - /* signal an interrupt, IDE_COMMAND_READ_MULTIPLE sets the interrupt at the start the block */ - if (--m_sectors_until_int == 0 || (m_sector_count == 1 && m_command != IDE_COMMAND_READ_MULTIPLE)) - { - m_sectors_until_int = ((m_command == IDE_COMMAND_READ_MULTIPLE) ? m_block_count : 1); - set_irq(ASSERT_LINE); - } - - /* if we're just verifying we can read the next sector */ - if (m_command == IDE_COMMAND_VERIFY_SECTORS || - m_command == IDE_COMMAND_VERIFY_SECTORS_NORETRY ) - { - read_buffer_empty(); - } - else - { - m_status |= IDE_STATUS_DRQ; - - if (m_command == IDE_COMMAND_READ_DMA) - set_dmarq(ASSERT_LINE); - } - } - - /* if we got an error, we need to report it */ - else - { - /* set the error flag and the error */ - m_status |= IDE_STATUS_ERR; - m_error = IDE_ERROR_BAD_SECTOR; - - /* signal an interrupt */ - set_irq(ASSERT_LINE); - } -} - - -void ata_mass_storage_device::read_first_sector() -{ - if (m_master_password_enable || m_user_password_enable) - { - security_error(); - } - else - { - set_dasp(ASSERT_LINE); - - start_busy(seek_time(), PARAM_COMMAND); - } -} - -/************************************* - * - * Sector writing - * - *************************************/ - -void ata_mass_storage_device::process_buffer() -{ - if (m_command == IDE_COMMAND_SECURITY_UNLOCK) - { - if (m_user_password_enable && memcmp(&m_buffer[0], m_user_password, 2 + 32) == 0) - { - LOGPRINT(("IDE Unlocked user password\n")); - m_user_password_enable = 0; - } - if (m_master_password_enable && memcmp(&m_buffer[0], m_master_password, 2 + 32) == 0) - { - LOGPRINT(("IDE Unlocked master password\n")); - m_master_password_enable = 0; - } - if (PRINTF_IDE_PASSWORD) - { - int i; - - for (i = 0; i < 34; i += 2) - { - if (i % 8 == 2) - osd_printf_debug("\n"); - - osd_printf_debug("0x%02x, 0x%02x, ", m_buffer[i], m_buffer[i + 1]); - //osd_printf_debug("0x%02x%02x, ", m_buffer[i], m_buffer[i + 1]); - } - osd_printf_debug("\n"); - } - - if (m_master_password_enable || m_user_password_enable) - security_error(); - } - else if (m_command == IDE_COMMAND_SECURITY_DISABLE_PASSWORD) - { - LOGPRINT(("IDE Done unimplemented SECURITY_DISABLE_PASSWORD command\n")); - } - else - { - set_dasp(ASSERT_LINE); - - if (m_command == IDE_COMMAND_WRITE_MULTIPLE) - { - if (m_sectors_until_int != 1) - { - /* ready to write now */ - finished_write(); - } - else - { - /* set a timer to do the write */ - start_busy(TIME_PER_SECTOR_WRITE, PARAM_COMMAND); - } - } - else - { - /* set a timer to do the write */ - start_busy(TIME_PER_SECTOR_WRITE, PARAM_COMMAND); - } - } -} - - -void ata_mass_storage_device::finished_write() -{ - int lba = lba_address(), count; - - set_dasp(CLEAR_LINE); - - /* now do the write */ - count = write_sector(lba, &m_buffer[0]); - - /* if we succeeded, advance to the next sector and set the nice bits */ - if (count == 1) - { - /* advance the pointers, unless this is the last sector */ - /* Gauntlet: Dark Legacy checks to make sure we stop on the last sector */ - if (m_sector_count != 1) - next_sector(); - - /* signal an interrupt */ - if (--m_sectors_until_int == 0 || m_sector_count == 1) - { - m_sectors_until_int = ((m_command == IDE_COMMAND_WRITE_MULTIPLE) ? m_block_count : 1); - set_irq(ASSERT_LINE); - } - - /* signal an interrupt if there's more data needed */ - if (m_sector_count > 0) - m_sector_count--; - - if (m_sector_count > 0) - { - m_status |= IDE_STATUS_DRQ; - - if (m_command == IDE_COMMAND_WRITE_DMA) - set_dmarq(ASSERT_LINE); - } - } - - /* if we got an error, we need to report it */ - else - { - /* set the error flag and the error */ - m_status |= IDE_STATUS_ERR; - m_error = IDE_ERROR_BAD_SECTOR; - - /* signal an interrupt */ - set_irq(ASSERT_LINE); - } -} - - -/************************************* - * - * Handle IDE commands - * - *************************************/ - -void ata_mass_storage_device::process_command() -{ - m_sectors_until_int = 0; - m_buffer_size = IDE_DISK_SECTOR_SIZE; - - switch (m_command) - { - case IDE_COMMAND_READ_SECTORS: - case IDE_COMMAND_READ_SECTORS_NORETRY: - LOGPRINT(("IDE Read multiple: C=%u H=%d S=%u LBA=%u count=%u\n", - (m_cylinder_high << 8) | m_cylinder_low, m_device_head & IDE_DEVICE_HEAD_HS, m_sector_number, lba_address(), m_sector_count)); - - m_sectors_until_int = 1; - - /* start the read going */ - read_first_sector(); - break; - - case IDE_COMMAND_READ_MULTIPLE: - LOGPRINT(("IDE Read multiple block: C=%u H=%u S=%u LBA=%u count=%u\n", - (m_cylinder_high << 8) | m_cylinder_low, m_device_head & IDE_DEVICE_HEAD_HS, m_sector_number, lba_address(), m_sector_count)); - - m_sectors_until_int = 1; - - /* start the read going */ - read_first_sector(); - break; - - case IDE_COMMAND_VERIFY_SECTORS: - case IDE_COMMAND_VERIFY_SECTORS_NORETRY: - LOGPRINT(("IDE Read verify multiple with/without retries: C=%u H=%u S=%u LBA=%u count=%u\n", - (m_cylinder_high << 8) | m_cylinder_low, m_device_head & IDE_DEVICE_HEAD_HS, m_sector_number, lba_address(), m_sector_count)); - - /* reset the buffer */ - m_sectors_until_int = m_sector_count; - - /* start the read going */ - read_first_sector(); - break; - - case IDE_COMMAND_READ_DMA: - LOGPRINT(("IDE Read multiple DMA: C=%u H=%u S=%u LBA=%u count=%u\n", - (m_cylinder_high << 8) | m_cylinder_low, m_device_head & IDE_DEVICE_HEAD_HS, m_sector_number, lba_address(), m_sector_count)); - - /* reset the buffer */ - m_sectors_until_int = m_sector_count; - - /* start the read going */ - read_first_sector(); - break; - - case IDE_COMMAND_WRITE_SECTORS: - case IDE_COMMAND_WRITE_SECTORS_NORETRY: - LOGPRINT(("IDE Write multiple: C=%u H=%u S=%u LBA=%u count=%u\n", - (m_cylinder_high << 8) | m_cylinder_low, m_device_head & IDE_DEVICE_HEAD_HS, m_sector_number, lba_address(), m_sector_count)); - - /* reset the buffer */ - m_sectors_until_int = 1; - - /* mark the buffer ready */ - m_status |= IDE_STATUS_DRQ; - break; - - case IDE_COMMAND_WRITE_MULTIPLE: - LOGPRINT(("IDE Write multiple block: C=%u H=%u S=%u LBA=%u count=%u\n", - (m_cylinder_high << 8) | m_cylinder_low, m_device_head & IDE_DEVICE_HEAD_HS, m_sector_number, lba_address(), m_sector_count)); - - /* reset the buffer */ - m_sectors_until_int = m_block_count; - - /* mark the buffer ready */ - m_status |= IDE_STATUS_DRQ; - break; - - case IDE_COMMAND_WRITE_DMA: - LOGPRINT(("IDE Write multiple DMA: C=%u H=%u S=%u LBA=%u count=%u\n", - (m_cylinder_high << 8) | m_cylinder_low, m_device_head & IDE_DEVICE_HEAD_HS, m_sector_number, lba_address(), m_sector_count)); - - /* reset the buffer */ - m_sectors_until_int = m_sector_count; - - /* mark the buffer ready */ - m_status |= IDE_STATUS_DRQ; - - /* start the read going */ - set_dmarq(ASSERT_LINE); - break; - - case IDE_COMMAND_SECURITY_UNLOCK: - LOGPRINT(("IDE Security Unlock\n")); - - /* mark the buffer ready */ - m_status |= IDE_STATUS_DRQ; - - set_irq(ASSERT_LINE); - break; - - case IDE_COMMAND_SECURITY_DISABLE_PASSWORD: - LOGPRINT(("IDE Unimplemented SECURITY DISABLE PASSWORD command\n")); - - /* mark the buffer ready */ - m_status |= IDE_STATUS_DRQ; - - set_irq(ASSERT_LINE); - break; - - case IDE_COMMAND_IDENTIFY_DEVICE: - LOGPRINT(("IDE Identify device\n")); - - start_busy(MINIMUM_COMMAND_TIME, PARAM_COMMAND); - break; - - case IDE_COMMAND_RECALIBRATE: - start_busy(MINIMUM_COMMAND_TIME, PARAM_COMMAND); - break; - - case IDE_COMMAND_IDLE: - /* signal an interrupt */ - set_irq(ASSERT_LINE); - break; - - case IDE_COMMAND_SET_CONFIG: - LOGPRINT(("IDE Set configuration (%u heads, %u sectors)\n", (m_device_head & IDE_DEVICE_HEAD_HS) + 1, m_sector_count)); - - start_busy(MINIMUM_COMMAND_TIME, PARAM_COMMAND); - break; - - case IDE_COMMAND_SET_MAX: - LOGPRINT(("IDE Set max (%02X %02X %02X %02X %02X)\n", m_feature, m_sector_count & 0xff, m_sector_number, m_cylinder_low, m_cylinder_high)); - - /* signal an interrupt */ - set_irq(ASSERT_LINE); - break; - - case IDE_COMMAND_SET_BLOCK_COUNT: - LOGPRINT(("IDE Set block count (%u)\n", m_sector_count)); - - m_block_count = m_sector_count; - - /* signal an interrupt */ - set_irq(ASSERT_LINE); - break; - - case IDE_COMMAND_SEEK: - /* signal an interrupt */ - set_irq(ASSERT_LINE); - break; - - case IDE_COMMAND_READ_NATIVE_MAX_ADDRESS: - start_busy(MINIMUM_COMMAND_TIME, PARAM_COMMAND); - break; - - default: - ata_hle_device::process_command(); - break; - } -} - -//************************************************************************** -// IDE HARD DISK DEVICE -//************************************************************************** - -// device type definition -DEFINE_DEVICE_TYPE(IDE_HARDDISK, ide_hdd_device, "idehd", "IDE Hard Disk") - -//------------------------------------------------- -// ide_hdd_device - constructor -//------------------------------------------------- - -ide_hdd_device::ide_hdd_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) - : ide_hdd_device(mconfig, IDE_HARDDISK, tag, owner, clock) -{ -} - -ide_hdd_device::ide_hdd_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, uint32_t clock) - : ata_mass_storage_device(mconfig, type, tag, owner, clock), - m_image(*this, "image") -{ -} - -void ide_hdd_device::device_start() -{ - ata_mass_storage_device::device_start(); - - /* create a timer for timing status */ - m_last_status_timer = timer_alloc(TID_NULL); -} - -//------------------------------------------------- -// device_reset - device-specific reset -//------------------------------------------------- - -void ide_hdd_device::device_reset() -{ - m_handle = m_image->get_chd_file(); - m_disk = m_image->get_hard_disk_file(); - - if (m_disk != nullptr && !m_can_identify_device) - { - const hard_disk_info *hdinfo = hard_disk_get_info(m_disk); - if (hdinfo->sectorbytes == IDE_DISK_SECTOR_SIZE) - { - m_num_cylinders = hdinfo->cylinders; - m_num_sectors = hdinfo->sectors; - m_num_heads = hdinfo->heads; - if (PRINTF_IDE_COMMANDS) osd_printf_debug("CHS: %u %u %u\n", m_num_cylinders, m_num_heads, m_num_sectors); - osd_printf_debug("CHS: %u %u %u\n", m_num_cylinders, m_num_heads, m_num_sectors); - } - - // build the features page - uint32_t metalength; - if (m_handle && m_handle->read_metadata (HARD_DISK_IDENT_METADATA_TAG, 0, &m_buffer[0], 512, metalength) == CHDERR_NONE) - { - for( int w = 0; w < 256; w++ ) - { - m_identify_buffer[w] = (m_buffer[(w * 2) + 1] << 8) | m_buffer[w * 2]; - } - } - else - { - ide_build_identify_device(); - } - - m_can_identify_device = 1; - } - - ata_mass_storage_device::device_reset(); -} - -uint8_t ide_hdd_device::calculate_status() -{ - uint8_t result = ata_hle_device::calculate_status(); - - if (m_last_status_timer->elapsed() > TIME_PER_ROTATION) - { - result |= IDE_STATUS_IDX; - m_last_status_timer->adjust(attotime::never); - } - - return result; -} - -//------------------------------------------------- -// device_add_mconfig - add device configuration -//------------------------------------------------- - -void ide_hdd_device::device_add_mconfig(machine_config &config) -{ - HARDDISK(config, "image"); -} |