--- /dev/null
+/*
+ *
+ * Copyright (C) 2002 MandrakeSoft S.A.
+ *
+ * MandrakeSoft S.A.
+ * 43, rue d'Aboukir
+ * 75002 Paris - France
+ * http://www.linux-mandrake.com/
+ * http://www.mandrakesoft.com/
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library 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
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ * Major modifications made for the V3VEE project
+ *
+ * The V3VEE Project is a joint project between Northwestern University
+ * and the University of New Mexico. You can find out more at
+ * http://www.v3vee.org
+ *
+ * Copyright (c) 2008, Zheng Cui <cuizheng@cs.unm.edu>
+ * Copyright (c) 2008, Jack Lange <jarusl@cs.northwestern.edu>
+ * Copyright (c) 2008, The V3VEE Project <http://www.v3vee.org>
+ * All rights reserved for original changes
+ *
+ */
+
+
+#include <devices/ramdisk.h>
+#include <palacios/vmm.h>
+#include <devices/cdrom.h>
+#include <devices/ide.h>
+
+
+#ifndef TRACE_RAMDISK
+#undef PrintTrace
+#define PrintTrace(fmt, args...)
+#endif
+
+
+#ifndef DEBUG_RAMDISK
+#undef PrintDebug
+#define PrintDebug(fmt, args...)
+#endif
+
+
+
+
+
+/*
+ * Data type definitions
+ *
+ */
+#define INDEX_PULSE_CYCLE 10
+
+
+
+
+#define INTR_REASON_BIT_ERR 0x01
+#define UNABLE_FIND_TAT_CHANNEL_ERR 0x02
+#define DRQ_ERR 0x03
+#define READ_BUF_GT_512 0x04
+
+
+
+#define PRI_DATA_PORT 0x1f0
+#define PRI_FEATURES_PORT 0x1f1
+#define PRI_SECT_CNT_PORT 0x1f2
+#define PRI_SECT_ADDR1_PORT 0x1f3
+#define PRI_SECT_ADDR2_PORT 0x1f4
+#define PRI_SECT_ADDR3_PORT 0x1f5
+#define PRI_DRV_SEL_PORT 0x1f6
+#define PRI_CMD_PORT 0x1f7
+#define PRI_CTRL_PORT 0x3f6
+#define PRI_ADDR_REG_PORT 0x3f7
+
+#define SEC_DATA_PORT 0x170
+#define SEC_FEATURES_PORT 0x171
+#define SEC_SECT_CNT_PORT 0x172
+#define SEC_SECT_ADDR1_PORT 0x173
+#define SEC_SECT_ADDR2_PORT 0x174
+#define SEC_SECT_ADDR3_PORT 0x175
+#define SEC_DRV_SEL_PORT 0x176
+#define SEC_CMD_PORT 0x177
+#define SEC_CTRL_PORT 0x376
+#define SEC_ADDR_REG_PORT 0x377
+
+
+#define PACKET_SIZE 12
+
+
+
+static const char cdrom_str[] = "CD-ROM";
+static const char harddisk_str[] = "HARDDISK";
+static const char none_str[] = "NONE";
+
+
+static inline const char * device_type_to_str(device_type_t type) {
+ switch (type) {
+ case IDE_DISK:
+ return harddisk_str;
+ case IDE_CDROM:
+ return cdrom_str;
+ case IDE_NONE:
+ return none_str;
+ default:
+ return NULL;
+ }
+}
+
+
+static inline void write_features(struct channel_t * channel, uchar_t value) {
+ channel->drives[0].controller.features = value;
+ channel->drives[1].controller.features = value;
+}
+
+
+static inline void write_sector_count(struct channel_t * channel, uchar_t value) {
+ channel->drives[0].controller.sector_count = value;
+ channel->drives[1].controller.sector_count = value;
+}
+
+static inline void write_sector_number(struct channel_t * channel, uchar_t value) {
+ channel->drives[0].controller.sector_no = value;
+ channel->drives[1].controller.sector_no = value;
+}
+
+
+static inline void write_cylinder_low(struct channel_t * channel, uchar_t value) {
+ channel->drives[0].controller.cylinder_no &= 0xff00;
+ channel->drives[0].controller.cylinder_no |= value;
+ channel->drives[1].controller.cylinder_no &= 0xff00;
+ channel->drives[1].controller.cylinder_no |= value;
+}
+
+static inline void write_cylinder_high(struct channel_t * channel, uchar_t value) {
+ ushort_t val2 = value;
+ val2 = val2 << 8;
+ channel->drives[0].controller.cylinder_no &= 0x00ff;
+ channel->drives[0].controller.cylinder_no |= (val2 & 0xff00);
+
+ channel->drives[1].controller.cylinder_no &= 0x00ff;
+ channel->drives[1].controller.cylinder_no |= (val2 & 0xff00);
+}
+
+static inline void write_head_no(struct channel_t * channel, uchar_t value) {
+ channel->drives[0].controller.head_no = value;
+ channel->drives[1].controller.head_no = value;
+}
+
+static inline void write_lba_mode(struct channel_t * channel, uchar_t value) {
+ channel->drives[0].controller.lba_mode = value;
+ channel->drives[1].controller.lba_mode = value;
+}
+
+
+static inline uint_t get_channel_no(struct ramdisk_t * ramdisk, struct channel_t * channel) {
+ return (((uchar_t *)channel - (uchar_t *)(ramdisk->channels)) / sizeof(struct channel_t));
+}
+
+static inline uint_t get_drive_no(struct channel_t * channel, struct drive_t * drive) {
+ return (((uchar_t *)drive - (uchar_t*)(channel->drives)) / sizeof(struct drive_t));
+}
+
+static inline struct drive_t * get_selected_drive(struct channel_t * channel) {
+ return &(channel->drives[channel->drive_select]);
+}
+
+
+static inline int is_primary_port(struct ramdisk_t * ramdisk, ushort_t port) {
+ switch(port)
+ {
+ case PRI_DATA_PORT:
+ case PRI_FEATURES_PORT:
+ case PRI_SECT_CNT_PORT:
+ case PRI_SECT_ADDR1_PORT:
+ case PRI_SECT_ADDR2_PORT:
+ case PRI_SECT_ADDR3_PORT:
+ case PRI_DRV_SEL_PORT:
+ case PRI_CMD_PORT:
+ case PRI_CTRL_PORT:
+ return 1;
+ default:
+ return 0;
+ }
+}
+
+
+
+static inline int is_secondary_port(struct ramdisk_t * ramdisk, ushort_t port) {
+ switch(port)
+ {
+ case SEC_DATA_PORT:
+ case SEC_FEATURES_PORT:
+ case SEC_SECT_CNT_PORT:
+ case SEC_SECT_ADDR1_PORT:
+ case SEC_SECT_ADDR2_PORT:
+ case SEC_SECT_ADDR3_PORT:
+ case SEC_DRV_SEL_PORT:
+ case SEC_CMD_PORT:
+ case SEC_CTRL_PORT:
+ return 1;
+ default:
+ return 0;
+ }
+}
+
+static inline int num_drives_on_channel(struct channel_t * channel) {
+ if ((channel->drives[0].device_type == IDE_NONE) &&
+ (channel->drives[1].device_type == IDE_NONE)) {
+ return 0;
+ } else if ((channel->drives[0].device_type != IDE_NONE) &&
+ (channel->drives[1].device_type != IDE_NONE)) {
+ return 2;
+ } else {
+ return 1;
+ }
+}
+
+
+
+static inline uchar_t extract_bits(uchar_t * buf, uint_t buf_offset, uint_t bit_offset, uint_t num_bits) {
+ uchar_t val = buf[buf_offset];
+ val = val >> bit_offset;
+ val &= ((1 << num_bits) -1);
+ return val;
+}
+
+
+static inline uchar_t get_packet_field(struct channel_t * channel, uint_t packet_offset, uint_t bit_offset, uint_t num_bits) {
+ struct drive_t * drive = get_selected_drive(channel);
+ return extract_bits(drive->controller.buffer, packet_offset, bit_offset, num_bits);
+}
+
+
+static inline uchar_t get_packet_byte(struct channel_t * channel, uint_t offset) {
+ struct drive_t * drive = get_selected_drive(channel);
+ return drive->controller.buffer[offset];
+}
+
+static inline uint16_t get_packet_word(struct channel_t * channel, uint_t offset) {
+ struct drive_t * drive = get_selected_drive(channel);
+ uint16_t val = drive->controller.buffer[offset];
+ val = val << 8;
+ val |= drive->controller.buffer[offset + 1];
+ return val;
+}
+
+
+static inline uint16_t rd_read_16bit(const uint8_t* buf) {
+ return (buf[0] << 8) | buf[1];
+}
+
+
+
+static inline uint32_t rd_read_32bit(const uint8_t* buf) {
+ return (buf[0] << 24) | (buf[1] << 16) | (buf[2] << 8) | buf[3];
+}
+
+////////////////////////////////////////////////////////////////////////////
+
+
+/*
+ * ATAPI routines
+ */
+
+
+static void rd_init_mode_sense_single(struct vm_device * dev, struct channel_t * channel, const void * src, int size);
+
+static void rd_command_aborted(struct vm_device * dev, struct channel_t * channel, unsigned value);
+
+
+
+
+static int handle_atapi_packet_command(struct vm_device * dev,
+ struct channel_t * channel,
+ ushort_t val);
+
+static int rd_init_send_atapi_command(struct vm_device * dev,
+ struct channel_t * channel,
+ Bit8u command, int req_length,
+ int alloc_length, bool lazy);
+
+static void rd_ready_to_send_atapi(struct vm_device * dev,
+ struct channel_t * channel);
+
+static void rd_atapi_cmd_error(struct vm_device * dev,
+ struct channel_t * channel,
+ sense_t sense_key, asc_t asc);
+
+static void rd_atapi_cmd_nop(struct vm_device * dev, struct channel_t * channel);
+static void rd_identify_ATAPI_drive(struct vm_device * dev, struct channel_t * channel);
+
+
+
+/*
+ * Interrupt handling
+ */
+static void rd_raise_interrupt(struct vm_device * dev, struct channel_t * channel);
+static void rd_lower_irq(struct vm_device *dev, struct channel_t * channel);
+
+
+
+/*
+ * Helper routines
+ */
+
+
+
+#ifdef DEBUG_RAMDISK
+static void rd_print_state(struct ramdisk_t *ramdisk);
+static int check_bit_fields(struct controller_t * controller);
+#endif
+
+
+////////////////////////////////////////////////////////////////////
+
+
+
+
+
+int v3_ramdisk_register_cdrom(struct vm_device * dev, uint_t busID, uint_t driveID, struct cdrom_ops* cd, void * private_data) {
+ struct ramdisk_t * ramdisk = (struct ramdisk_t *)(dev->private_data);
+ struct channel_t * channel = &(ramdisk->channels[busID]);
+ struct drive_t * drive = &(channel->drives[driveID]);
+ struct controller_t * controller = &(drive->controller);
+
+
+
+ if (drive->device_type != IDE_NONE) {
+ PrintError("Device already registered at this location\n");
+ return -1;
+ }
+
+
+ channel->irq = 15;
+
+ // Make model string
+ strncpy((char*)(drive->model_no), "V3VEE Ramdisk", 40);
+
+ while (strlen((char *)(drive->model_no)) < 40) {
+ strcat ((char*)(drive->model_no), " ");
+ }
+
+ PrintDebug("CDROM on target %d/%d\n", busID, driveID);
+
+ drive->device_type = IDE_CDROM;
+ drive->cdrom.locked = 0;
+ drive->sense.sense_key = SENSE_NONE;
+ drive->sense.asc = 0;
+ drive->sense.ascq = 0;
+
+ drive->private_data = private_data;
+
+
+#ifdef DEBUG_RAMDISK
+ if (check_bit_fields(controller) == INTR_REASON_BIT_ERR) {
+ PrintError("interrupt reason: bit field error\n");
+ return INTR_REASON_BIT_ERR;
+ }
+#endif
+
+ controller->sector_count = 0;
+
+ drive->cdrom.cd = cd;
+
+ PrintDebug("\t\tCD on ata%d-%d: '%s'\n",
+ busID,
+ driveID, "");
+
+ if(drive->cdrom.cd->insert_cdrom(drive->private_data)) {
+ PrintDebug("\t\tMedia present in CD-ROM drive\n");
+ drive->cdrom.ready = 1;
+ drive->cdrom.capacity = drive->cdrom.cd->capacity(drive->private_data);
+ PrintDebug("\t\tCDROM capacity is %d\n", drive->cdrom.capacity);
+ } else {
+ PrintDebug("\t\tCould not locate CD-ROM, continuing with media not present\n");
+ drive->cdrom.ready = 0;
+ }
+
+ return 0;
+}
+
+
+static Bit32u rd_init_hardware(struct ramdisk_t *ramdisk) {
+ uint_t channel_num;
+ uint_t device;
+ struct channel_t *channels = (struct channel_t *)(&(ramdisk->channels));
+
+ PrintDebug("[rd_init_harddrive]\n");
+
+ for (channel_num = 0; channel_num < MAX_ATA_CHANNEL; channel_num++) {
+ memset((char *)(channels + channel_num), 0, sizeof(struct channel_t));
+ }
+
+ for (channel_num = 0; channel_num < MAX_ATA_CHANNEL; channel_num++){
+ struct channel_t * channel = &(channels[channel_num]);
+
+ channel->ioaddr1 = 0x0;
+ channel->ioaddr2 = 0x0;
+ channel->irq = 0;
+
+ for (device = 0; device < 2; device++){
+ struct drive_t * drive = &(channel->drives[device]);
+ struct controller_t * controller = &(drive->controller);
+
+ controller->status.busy = 0;
+ controller->status.drive_ready = 1;
+ controller->status.write_fault = 0;
+ controller->status.seek_complete = 1;
+ controller->status.drq = 0;
+ controller->status.corrected_data = 0;
+ controller->status.index_pulse = 0;
+ controller->status.index_pulse_count = 0;
+ controller->status.err = 0;
+
+ controller->error_register = 0x01; // diagnostic code: no error
+ controller->head_no = 0;
+ controller->sector_count = 1;
+ controller->sector_no = 1;
+ controller->cylinder_no = 0;
+ controller->current_command = 0x00;
+ controller->buffer_index = 0;
+
+ controller->control.reset = 0;
+ controller->control.disable_irq = 0;
+ controller->reset_in_progress = 0;
+
+ controller->sectors_per_block = 0x80;
+ controller->lba_mode = 0;
+
+
+ controller->features = 0;
+
+ // If not present
+ drive->device_type = IDE_NONE;
+
+ // Make model string
+ strncpy((char*)(drive->model_no), "", 40);
+ while(strlen((char *)(drive->model_no)) < 40) {
+ strcat ((char*)(drive->model_no), " ");
+ }
+
+ }//for device
+ }//for channel
+
+#ifdef DEBUG_RAMDISK
+ rd_print_state(ramdisk);
+#endif
+ return 0;
+}
+
+
+/*
+ static void rd_reset_harddrive(struct ramdisk_t *ramdisk, unsigned type) {
+ return;
+ }
+
+*/
+static void rd_close_harddrive(struct ramdisk_t *ramdisk) {
+ return;
+}
+
+
+////////////////////////////////////////////////////////////////////
+
+
+
+static int read_data_port(ushort_t port, void * dst, uint_t length, struct vm_device * dev) {
+ struct ramdisk_t * ramdisk = (struct ramdisk_t *)(dev->private_data);
+ struct channel_t * channel = NULL;
+ struct drive_t * drive = NULL;
+ struct controller_t * controller = NULL;
+
+
+
+ if (is_primary_port(ramdisk, port)) {
+ channel = &(ramdisk->channels[0]);
+ } else if (is_secondary_port(ramdisk, port)) {
+ channel = &(ramdisk->channels[1]);
+ } else {
+ PrintError("Invalid Port: %d\n", port);
+ return -1;
+ }
+
+ drive = get_selected_drive(channel);
+ controller = &(drive->controller);
+
+
+ PrintTrace("[read_data_handler] IO Read at 0x%x, on drive %d/%d current cmd=0x%x\n",
+ port,
+ get_channel_no(ramdisk, channel),
+ get_drive_no(channel, drive),
+ controller->current_command);
+
+ switch (controller->current_command) {
+ case 0xec: // IDENTIFY DEVICE
+ case 0xa1:
+ {
+
+
+ controller->status.busy = 0;
+ controller->status.drive_ready = 1;
+ controller->status.write_fault = 0;
+ controller->status.seek_complete = 1;
+ controller->status.corrected_data = 0;
+ controller->status.err = 0;
+
+ /*
+ value32 = controller->buffer[index];
+ index++;
+
+ if (io_len >= 2) {
+ value32 |= (controller->buffer[index] << 8);
+ index++;
+ }
+
+ if (io_len == 4) {
+ value32 |= (controller->buffer[index] << 16);
+ value32 |= (controller->buffer[index+1] << 24);
+ index += 2;
+ }
+
+ controller->buffer_index = index;
+ */
+ /* JRL */
+ memcpy(dst, controller->buffer + controller->buffer_index, length);
+ controller->buffer_index += length;
+
+ if (controller->buffer_index >= 512) {
+ controller->status.drq = 0;
+ }
+
+ return length;
+ }
+ case 0xa0: //send packet cmd
+ {
+ uint_t index = controller->buffer_index;
+
+
+ PrintTrace("\t\tatapi.command(%02x), index(%d), cdrom.remaining_blocks(%d)\n",
+ drive->atapi.command,
+ index,
+ drive->cdrom.remaining_blocks);
+
+ // Load block if necessary
+ if (index >= 2048) {
+
+ if (index > 2048) {
+ PrintError("\t\tindex > 2048 : 0x%x\n", index);
+ return -1;
+ }
+
+ switch (drive->atapi.command) {
+ case 0x28: // read (10)
+ case 0xa8: // read (12)
+ {
+
+ if (!(drive->cdrom.ready)) {
+ PrintError("\t\tRead with CDROM not ready\n");
+ return -1;
+ }
+
+ drive->cdrom.cd->read_block(drive->private_data, controller->buffer,
+ drive->cdrom.next_lba);
+ drive->cdrom.next_lba++;
+ drive->cdrom.remaining_blocks--;
+
+
+ if (!(drive->cdrom.remaining_blocks)) {
+ PrintDebug("\t\tLast READ block loaded {CDROM}\n");
+ } else {
+ PrintDebug("\t\tREAD block loaded (%d remaining) {CDROM}\n",
+ drive->cdrom.remaining_blocks);
+ }
+
+ // one block transfered, start at beginning
+ index = 0;
+ break;
+ }
+ default: // no need to load a new block
+ break;
+ }
+ }
+
+
+ /*
+ increment = 0;
+ value32 = controller->buffer[index + increment];
+ increment++;
+
+ if (io_len >= 2) {
+ value32 |= (controller->buffer[index + increment] << 8);
+ increment++;
+ }
+
+ if (io_len == 4) {
+ value32 |= (controller->buffer[index + increment] << 16);
+ value32 |= (controller->buffer[index + increment + 1] << 24);
+ increment += 2;
+ }
+
+ controller->buffer_index = index + increment;
+ controller->drq_index += increment;
+
+ */
+ /* JRL: CHECK THAT there is enough data in the buffer to copy.... */
+ {
+ memcpy(dst, controller->buffer + index, length);
+
+ controller->buffer_index = index + length;
+ controller->drq_index += length;
+ }
+
+ /* *** */
+
+ if (controller->drq_index >= (unsigned)drive->atapi.drq_bytes) {
+ controller->status.drq = 0;
+ controller->drq_index = 0;
+
+ drive->atapi.total_bytes_remaining -= drive->atapi.drq_bytes;
+
+ if (drive->atapi.total_bytes_remaining > 0) {
+ // one or more blocks remaining (works only for single block commands)
+
+ PrintDebug("\t\tPACKET drq bytes read\n");
+ controller->interrupt_reason.i_o = 1;
+ controller->status.busy = 0;
+ controller->status.drq = 1;
+ controller->interrupt_reason.c_d = 0;
+
+ // set new byte count if last block
+ if (drive->atapi.total_bytes_remaining < controller->byte_count) {
+ controller->byte_count = drive->atapi.total_bytes_remaining;
+ }
+ drive->atapi.drq_bytes = controller->byte_count;
+
+ rd_raise_interrupt(dev, channel);
+ } else {
+ // all bytes read
+ PrintDebug("\t\tPACKET all bytes read\n");
+
+ controller->interrupt_reason.i_o = 1;
+ controller->interrupt_reason.c_d = 1;
+ controller->status.drive_ready = 1;
+ controller->interrupt_reason.rel = 0;
+ controller->status.busy = 0;
+ controller->status.drq = 0;
+ controller->status.err = 0;
+
+ rd_raise_interrupt(dev, channel);
+ }
+ }
+ return length;
+ break;
+ }
+
+ default:
+ PrintError("\t\tunsupported command: %02x\n", controller->current_command);
+ break;
+ }
+
+ return -1;
+}
+
+
+
+
+static int write_data_port(ushort_t port, void * src, uint_t length, struct vm_device * dev) {
+ struct ramdisk_t * ramdisk = (struct ramdisk_t *)(dev->private_data);
+ struct channel_t * channel = NULL;
+ struct drive_t * drive = NULL;
+ struct controller_t * controller = NULL;
+
+ if (is_primary_port(ramdisk, port)) {
+ channel = &(ramdisk->channels[0]);
+ } else if (is_secondary_port(ramdisk, port)) {
+ channel = &(ramdisk->channels[1]);
+ } else {
+ PrintError("Invalid Port: %d\n", port);
+ return -1;
+ }
+
+ drive = get_selected_drive(channel);
+ controller = &(drive->controller);
+
+
+ PrintDebug("[write_data_handler] IO write at 0x%x, current_cmd = 0x%02x\n",
+ port, controller->current_command);
+
+
+
+ //PrintDebug("[write_data_handler]\n");
+ switch (controller->current_command) {
+ case 0x30: // WRITE SECTORS
+ PrintError("\t\tneed to implement 0x30(write sector) to port 0x%x\n", port);
+ return -1;
+
+ case 0xa0: // PACKET
+
+ if (handle_atapi_packet_command(dev, channel, *(ushort_t *)src) == -1) {
+ PrintError("Error sending atapi packet command in PACKET write to data port\n");
+ return -1;
+ }
+
+ return length;
+
+ default:
+ PrintError("\t\tIO write(0x%x): current command is %02xh\n",
+ port, controller->current_command);
+
+ return -1;
+ }
+
+
+ return -1;
+}
+
+
+
+
+
+
+
+static int read_status_port(ushort_t port, void * dst, uint_t length, struct vm_device * dev) {
+ struct ramdisk_t * ramdisk = (struct ramdisk_t *)(dev->private_data);
+ struct channel_t * channel = NULL;
+ struct drive_t * drive = NULL;
+ struct controller_t * controller = NULL;
+
+
+
+
+ if (is_primary_port(ramdisk, port)) {
+ channel = &(ramdisk->channels[0]);
+ } else if (is_secondary_port(ramdisk, port)) {
+ channel = &(ramdisk->channels[1]);
+ } else {
+ PrintError("Invalid Port: %d\n", port);
+ return -1;
+ }
+
+ drive = get_selected_drive(channel);
+ controller = &(drive->controller);
+
+
+ PrintDebug("[read_status_handler] IO read at 0x%x, on drive %d/%d\n",
+ port, get_channel_no(ramdisk, channel),
+ channel->drive_select);
+
+
+ if (num_drives_on_channel(channel) == 0) {
+ PrintDebug("Setting value to zero because 0 devices on channel\n");
+ // (mch) Just return zero for these registers
+ memset(dst, 0, length);
+
+ } else {
+ uchar_t val = (
+ (controller->status.busy << 7) |
+ (controller->status.drive_ready << 6) |
+ (controller->status.write_fault << 5) |
+ (controller->status.seek_complete << 4) |
+ (controller->status.drq << 3) |
+ (controller->status.corrected_data << 2) |
+ (controller->status.index_pulse << 1) |
+ (controller->status.err) );
+
+
+ memcpy(dst, &val, length);
+
+ controller->status.index_pulse_count++;
+ controller->status.index_pulse = 0;
+
+ if (controller->status.index_pulse_count >= INDEX_PULSE_CYCLE) {
+ controller->status.index_pulse = 1;
+ controller->status.index_pulse_count = 0;
+ }
+ }
+
+ if ((port == SEC_CMD_PORT) || (port == PRI_CMD_PORT)) {
+ rd_lower_irq(dev, channel);
+ }
+
+ PrintDebug("\t\tRead STATUS = 0x%x\n", *(uchar_t *)dst);
+
+ return length;
+
+}
+
+
+static int write_cmd_port(ushort_t port, void * src, uint_t length, struct vm_device * dev) {
+ struct ramdisk_t * ramdisk = (struct ramdisk_t *)(dev->private_data);
+ struct channel_t * channel = NULL;
+ struct drive_t * drive = NULL;
+ struct controller_t * controller = NULL;
+ uchar_t value = *(uchar_t *)src;
+
+ if (length != 1) {
+ PrintError("Invalid Command port write length: %d (port=%d)\n", length, port);
+ return -1;
+ }
+
+ if (is_primary_port(ramdisk, port)) {
+ channel = &(ramdisk->channels[0]);
+ } else if (is_secondary_port(ramdisk, port)) {
+ channel = &(ramdisk->channels[1]);
+ } else {
+ PrintError("Invalid Port: %d\n", port);
+ return -1;
+ }
+
+ drive = get_selected_drive(channel);
+ controller = &(drive->controller);
+
+
+ PrintDebug("[write_command_handler] IO write at 0x%x, on drive %d/%d (val = 0x%x)\n",
+ port, get_channel_no(ramdisk, channel),
+ get_drive_no(channel, drive),
+ value);
+
+ switch (value) {
+#if 0
+ case 0xec: // IDENTIFY DEVICE
+ {
+
+ if (drive->device_type == IDE_NONE) {
+ PrintError("\t\tError: disk ata%d-%d not present, aborting\n",
+ get_channel_no(ramdisk, channel),
+ get_drive_no(channel, drive));
+ rd_command_aborted(dev, channel, value);
+ break;
+ } else if (drive->device_type == IDE_CDROM) {
+ PrintDebug("Identifying CDROM...Going to abort????\n");
+ controller->head_no = 0;
+ controller->sector_count = 1;
+ controller->sector_no = 1;
+ controller->cylinder_no = 0xeb14;
+ rd_command_aborted(dev, channel, 0xec);
+ } else {
+ PrintError("\t\tError: Want to identify HDD!!\n");
+ /*
+ SELECTED_CONTROLLER(channel).current_command = value;
+ SELECTED_CONTROLLER(channel).error_register = 0;
+
+ // See ATA/ATAPI-4, 8.12
+ SELECTED_CONTROLLER(channel).status.busy = 0;
+ SELECTED_CONTROLLER(channel).status.drive_ready = 1;
+ SELECTED_CONTROLLER(channel).status.write_fault = 0;
+ SELECTED_CONTROLLER(channel).status.drq = 1;
+ SELECTED_CONTROLLER(channel).status.err = 0;
+
+ SELECTED_CONTROLLER(channel).status.seek_complete = 1;
+ SELECTED_CONTROLLER(channel).status.corrected_data = 0;
+
+ SELECTED_CONTROLLER(channel).buffer_index = 0;
+ raise_interrupt(channel);
+ identify_drive(channel);
+ */
+ }
+
+ break;
+ }
+#endif
+ // ATAPI commands
+ case 0xa1: // IDENTIFY PACKET DEVICE
+ {
+ if (drive->device_type == IDE_CDROM) {
+ controller->current_command = value;
+ controller->error_register = 0;
+
+ controller->status.busy = 0;
+ controller->status.drive_ready = 1;
+ controller->status.write_fault = 0;
+ controller->status.drq = 1;
+ controller->status.err = 0;
+
+ controller->status.seek_complete = 1;
+ controller->status.corrected_data = 0;
+
+ controller->buffer_index = 0;
+ rd_raise_interrupt(dev, channel);
+ rd_identify_ATAPI_drive(dev, channel);
+ } else {
+ PrintError("Identifying non cdrom device not supported - ata %d/%d\n",
+ get_channel_no(ramdisk, channel),
+ get_drive_no(channel, drive));
+ rd_command_aborted(dev, channel, 0xa1);
+ }
+ break;
+ }
+ case 0xa0: // SEND PACKET (atapi)
+ {
+ if (drive->device_type == IDE_CDROM) {
+ // PACKET
+
+ if (controller->features & (1 << 0)) {
+ PrintError("\t\tPACKET-DMA not supported");
+ return -1;
+ }
+
+ if (controller->features & (1 << 1)) {
+ PrintError("\t\tPACKET-overlapped not supported");
+ return -1;
+ }
+
+ // We're already ready!
+ controller->sector_count = 1;
+ controller->status.busy = 0;
+ controller->status.write_fault = 0;
+
+ // serv bit??
+ controller->status.drq = 1;
+ controller->status.err = 0;
+
+ // NOTE: no interrupt here
+ controller->current_command = value;
+ controller->buffer_index = 0;
+ } else {
+ PrintError("Sending packet to non cdrom device not supported\n");
+ rd_command_aborted (dev, channel, 0xa0);
+ }
+ break;
+ }
+ default:
+ PrintError("\t\tneed translate command %2x - ata %d\%d\n", value,
+ get_channel_no(ramdisk, channel),
+ get_drive_no(channel, drive));
+ //return -1;
+ /* JRL THIS NEEDS TO CHANGE */
+ return length;
+
+ }
+ return length;
+}
+
+
+static int write_ctrl_port(ushort_t port, void * src, uint_t length, struct vm_device * dev) {
+ struct ramdisk_t * ramdisk = (struct ramdisk_t *)(dev->private_data);
+ struct channel_t * channel = NULL;
+ struct drive_t * master_drive = NULL;
+ struct drive_t * slave_drive = NULL;
+ struct controller_t * controller = NULL;
+ uchar_t value = *(uchar_t *)src;
+ rd_bool prev_control_reset;
+
+ if (length != 1) {
+ PrintError("Invalid Status port read length: %d (port=%d)\n", length, port);
+ return -1;
+ }
+
+ if (is_primary_port(ramdisk, port)) {
+ channel = &(ramdisk->channels[0]);
+ } else if (is_secondary_port(ramdisk, port)) {
+ channel = &(ramdisk->channels[1]);
+ } else {
+ PrintError("Invalid Port: %d\n", port);
+ return -1;
+ }
+
+ master_drive = &(channel->drives[0]);
+ slave_drive = &(channel->drives[1]);
+
+ controller = &(get_selected_drive(channel)->controller);
+
+
+ PrintDebug("[write_control_handler] IO write at 0x%x, on drive %d/%d (val = 0x%x)\n",
+ port, get_channel_no(ramdisk, channel),
+ channel->drive_select,
+ value);
+
+ // (mch) Even if device 1 was selected, a write to this register
+ // goes to device 0 (if device 1 is absent)
+
+ prev_control_reset = controller->control.reset;
+
+
+ if (value & 0x04) {
+ PrintDebug("RESET Signaled\n");
+ }
+
+ master_drive->controller.control.reset = value & 0x04;
+ slave_drive->controller.control.reset = value & 0x04;
+
+ // CGS: was: SELECTED_CONTROLLER(channel).control.disable_irq = value & 0x02;
+ master_drive->controller.control.disable_irq = value & 0x02;
+ slave_drive->controller.control.disable_irq = value & 0x02;
+
+ PrintDebug("\t\tadpater control reg: reset controller = %d\n",
+ (unsigned) (controller->control.reset) ? 1 : 0);
+ PrintDebug("\t\tadpater control reg: disable_irq(X) = %d\n",
+ (unsigned) (controller->control.disable_irq) ? 1 : 0);
+
+ if ((!prev_control_reset) && (controller->control.reset)) {
+ uint_t id = 0;
+
+ // transition from 0 to 1 causes all drives to reset
+ PrintDebug("\t\thard drive: RESET\n");
+
+ // (mch) Set BSY, drive not ready
+ for (id = 0; id < 2; id++) {
+ struct controller_t * ctrl = NULL;
+
+ if (id == 0) {
+ ctrl = &(master_drive->controller);
+ } else if (id == 1) {
+ ctrl = &(slave_drive->controller);
+ }
+
+ ctrl->status.busy = 1;
+ ctrl->status.drive_ready = 0;
+ ctrl->reset_in_progress = 1;
+
+ ctrl->status.write_fault = 0;
+ ctrl->status.seek_complete = 1;
+ ctrl->status.drq = 0;
+ ctrl->status.corrected_data = 0;
+ ctrl->status.err = 0;
+
+ ctrl->error_register = 0x01; // diagnostic code: no error
+
+ ctrl->current_command = 0x00;
+ ctrl->buffer_index = 0;
+
+ ctrl->sectors_per_block = 0x80;
+ ctrl->lba_mode = 0;
+
+ ctrl->control.disable_irq = 0;
+ }
+
+ rd_lower_irq(dev, channel);
+
+ } else if ((controller->reset_in_progress) &&
+ (!controller->control.reset)) {
+ uint_t id;
+ // Clear BSY and DRDY
+ PrintDebug("\t\tReset complete {%s}\n", device_type_to_str(get_selected_drive(channel)->device_type));
+
+ for (id = 0; id < 2; id++) {
+ struct controller_t * ctrl = NULL;
+ struct drive_t * drv = NULL;
+
+ if (id == 0) {
+ ctrl = &(master_drive->controller);
+ drv = master_drive;
+ } else if (id == 1) {
+ ctrl = &(slave_drive->controller);
+ drv = slave_drive;
+ }
+
+ ctrl->status.busy = 0;
+ ctrl->status.drive_ready = 1;
+ ctrl->reset_in_progress = 0;
+
+ // Device signature
+ if (drv->device_type == IDE_DISK) {
+ PrintDebug("\t\tdrive %d/%d is harddrive\n", get_channel_no(ramdisk, channel), id);
+ ctrl->head_no = 0;
+ ctrl->sector_count = 1;
+ ctrl->sector_no = 1;
+ ctrl->cylinder_no = 0;
+ } else {
+ ctrl->head_no = 0;
+ ctrl->sector_count = 1;
+ ctrl->sector_no = 1;
+ ctrl->cylinder_no = 0xeb14;
+ }
+ }
+ }
+
+ PrintDebug("\t\ts[0].controller.control.disable_irq = %02x\n",
+ master_drive->controller.control.disable_irq);
+ PrintDebug("\t\ts[1].controller.control.disable_irq = %02x\n",
+ slave_drive->controller.control.disable_irq);
+ return length;
+}
+
+
+static int read_general_port(ushort_t port, void * dst, uint_t length, struct vm_device * dev) {
+ struct ramdisk_t * ramdisk = (struct ramdisk_t *)(dev->private_data);
+ struct channel_t * channel = NULL;
+ struct drive_t * drive = NULL;
+ struct controller_t * controller = NULL;
+
+
+ if (length != 1) {
+ PrintError("Invalid Status port read length: %d (port=%d)\n", length, port);
+ return -1;
+ }
+
+ if (is_primary_port(ramdisk, port)) {
+ channel = &(ramdisk->channels[0]);
+ } else if (is_secondary_port(ramdisk, port)) {
+ channel = &(ramdisk->channels[1]);
+ } else {
+ PrintError("Invalid Port: %d\n", port);
+ return -1;
+ }
+
+ drive = get_selected_drive(channel);
+ controller = &(drive->controller);
+
+
+ PrintDebug("[read_general_handler] IO read addr at %x, on drive %d/%d, curcmd = %02x\n",
+ port, get_channel_no(ramdisk, channel),
+ channel->drive_select,
+ controller->current_command);
+
+
+ switch (port) {
+ case PRI_FEATURES_PORT:
+ case SEC_FEATURES_PORT: // hard disk error register 0x1f1
+ {
+ uchar_t val = (drive->device_type == IDE_NONE) ? 0 : controller->error_register;
+
+ controller->status.err = 0;
+
+ PrintDebug("\t\tRead FEATURES = 0x%x\n", val);
+
+ *(uchar_t *)dst = val;
+ return length;
+
+ break;
+ }
+
+ case PRI_SECT_CNT_PORT:
+ case SEC_SECT_CNT_PORT: // hard disk sector count / interrupt reason 0x1f2
+ {
+ uchar_t val = (drive->device_type == IDE_NONE) ? 0 : controller->sector_count;
+ PrintDebug("\t\tRead SECTOR COUNT = 0x%x\n", val);
+ *(uchar_t *)dst = val;
+ return length;
+
+ break;
+ }
+ case PRI_SECT_ADDR1_PORT:
+ case SEC_SECT_ADDR1_PORT: // sector number 0x1f3
+ {
+ uchar_t val = (drive->device_type == IDE_NONE) ? 0 : controller->sector_no;
+
+ PrintDebug("\t\tRead SECTOR ADDR1 = 0x%x\n", val);
+
+ *(uchar_t *)dst = val;
+ return length;
+
+ break;
+ }
+
+ case PRI_SECT_ADDR2_PORT:
+ case SEC_SECT_ADDR2_PORT: // cylinder low 0x1f4
+ {
+ // -- WARNING : On real hardware the controller registers are shared between drives.
+ // So we must respond even if the select device is not present. Some OS uses this fact
+ // to detect the disks.... minix2 for example
+ uchar_t val = (num_drives_on_channel(channel) == 0) ? 0 : (controller->cylinder_no & 0x00ff);
+
+ PrintDebug("\t\tRead SECTOR ADDR2 = 0x%x\n", val);
+
+ *(uchar_t *)dst = val;
+ return length;
+
+ break;
+ }
+
+ case PRI_SECT_ADDR3_PORT:
+ case SEC_SECT_ADDR3_PORT: // cylinder high 0x1f5
+ {
+ // -- WARNING : On real hardware the controller registers are shared between drives.
+ // So we must respond even if the select device is not present. Some OS uses this fact
+ // to detect the disks.... minix2 for example
+ uchar_t val = (num_drives_on_channel(channel) == 0) ? 0 : (controller->cylinder_no >> 8);
+
+ PrintDebug("\t\tRead SECTOR ADDR3 = 0x%x\n", val);
+
+ *(uchar_t *)dst = val;
+ return length;
+
+ break;
+ }
+ case PRI_DRV_SEL_PORT:
+ case SEC_DRV_SEL_PORT: // hard disk drive and head register 0x1f6
+ {
+ // b7 Extended data field for ECC
+ // b6/b5: Used to be sector size. 00=256,01=512,10=1024,11=128
+ // Since 512 was always used, bit 6 was taken to mean LBA mode:
+ // b6 1=LBA mode, 0=CHS mode
+ // b5 1
+ // b4: DRV
+ // b3..0 HD3..HD0
+ uchar_t val = ((1 << 7) |
+ ((controller->lba_mode > 0) << 6) |
+ (1 << 5) | // 01b = 512 sector size
+ (channel->drive_select << 4) |
+ (controller->head_no << 0));
+
+ PrintDebug("\t\tRead DRIVE SELECT = 0x%x\n", val);
+ *(uchar_t *)dst = val;
+ return length;
+
+ break;
+ }
+ case PRI_ADDR_REG_PORT:
+ case SEC_ADDR_REG_PORT: // Hard Disk Address Register 0x3f7
+ {
+ // Obsolete and unsupported register. Not driven by hard
+ // disk controller. Report all 1's. If floppy controller
+ // is handling this address, it will call this function
+ // set/clear D7 (the only bit it handles), then return
+ // the combined value
+ *(uchar_t *)dst = 0xff;
+ return length;
+ }
+
+ default:
+ PrintError("Invalid Port: %d\n", port);
+ return -1;
+ }
+}
+
+
+
+
+static int write_general_port(ushort_t port, void * src, uint_t length, struct vm_device * dev) {
+ struct ramdisk_t * ramdisk = (struct ramdisk_t *)(dev->private_data);
+ struct channel_t * channel = NULL;
+ struct drive_t * drive = NULL;
+ struct controller_t * controller = NULL;
+ uchar_t value = *(uchar_t *)src;
+
+ if (length != 1) {
+ PrintError("Invalid Status port read length: %d (port=%d)\n", length, port);
+ return -1;
+ }
+
+ if (is_primary_port(ramdisk, port)) {
+ channel = &(ramdisk->channels[0]);
+ } else if (is_secondary_port(ramdisk, port)) {
+ channel = &(ramdisk->channels[1]);
+ } else {
+ PrintError("Invalid Port: %d\n", port);
+ return -1;
+ }
+
+ drive = get_selected_drive(channel);
+ controller = &(drive->controller);
+
+
+ PrintDebug("[write_general_handler] IO write to port %x (val=0x%02x), channel = %d\n",
+ port, value, get_channel_no(ramdisk, channel));
+
+ switch (port) {
+
+ case PRI_FEATURES_PORT:
+ case SEC_FEATURES_PORT: // hard disk write precompensation 0x1f1
+ {
+ write_features(channel, value);
+ break;
+ }
+ case PRI_SECT_CNT_PORT:
+ case SEC_SECT_CNT_PORT: // hard disk sector count 0x1f2
+ {
+ write_sector_count(channel, value);
+ break;
+ }
+ case PRI_SECT_ADDR1_PORT:
+ case SEC_SECT_ADDR1_PORT: // hard disk sector number 0x1f3
+ {
+ write_sector_number(channel, value);
+ break;
+ }
+ case PRI_SECT_ADDR2_PORT:
+ case SEC_SECT_ADDR2_PORT: // hard disk cylinder low 0x1f4
+ {
+ write_cylinder_low(channel, value);
+ break;
+ }
+ case PRI_SECT_ADDR3_PORT:
+ case SEC_SECT_ADDR3_PORT: // hard disk cylinder high 0x1f5
+ {
+ write_cylinder_high(channel, value);
+ break;
+ }
+ case PRI_DRV_SEL_PORT:
+ case SEC_DRV_SEL_PORT: // hard disk drive and head register 0x1f6
+ {
+ // b7 Extended data field for ECC
+ // b6/b5: Used to be sector size. 00=256,01=512,10=1024,11=128
+ // Since 512 was always used, bit 6 was taken to mean LBA mode:
+ // b6 1=LBA mode, 0=CHS mode
+ // b5 1
+ // b4: DRV
+ // b3..0 HD3..HD0
+
+ // 1x1xxxxx
+
+ PrintDebug("\tDrive Select value=%x\n", value);
+
+ if ((value & 0xa0) != 0xa0) {
+ PrintDebug("\t\tIO write 0x%x (%02x): not 1x1xxxxxb\n", port, (unsigned) value);
+ }
+
+ write_head_no(channel, value & 0xf);
+ if ((controller->lba_mode == 0) && (((value >> 6) & 1) == 1)) {
+ PrintDebug("\t\tenabling LBA mode\n");
+ }
+
+ write_lba_mode(channel, (value >> 6) & 1);
+
+
+
+ if (drive->cdrom.cd) {
+ PrintDebug("\t\tSetting LBA on CDROM: %d\n", (value >> 6) & 1);
+ drive->cdrom.cd->set_LBA(drive->private_data, (value >> 6) & 1);
+ }
+
+
+ channel->drive_select = (value >> 4) & 0x01;
+ drive = get_selected_drive(channel);
+
+ if (drive->device_type == IDE_NONE) {
+ PrintError("\t\tError: device set to %d which does not exist! channel = 0x%x\n",
+ channel->drive_select, get_channel_no(ramdisk, channel));
+
+ controller->error_register = 0x04; // aborted
+ controller->status.err = 1;
+ }
+
+ break;
+ }
+ default:
+ PrintError("\t\thard drive: io write to unhandled port 0x%x (value = %c)\n", port, value);
+ //return -1;
+ }
+
+ return length;
+}
+
+
+
+
+
+static void rd_raise_interrupt(struct vm_device * dev, struct channel_t * channel) {
+ // struct ramdisk_t * ramdisk = (struct ramdisk_t *)(dev->private_data);
+ struct drive_t * drive = get_selected_drive(channel);
+ struct controller_t * controller = &(drive->controller);
+
+ PrintDebug("[raise_interrupt] disable_irq = 0x%02x\n", controller->control.disable_irq);
+
+ if (!(controller->control.disable_irq)) {
+
+ PrintDebug("\t\tRaising interrupt %d {%s}\n\n", channel->irq, device_type_to_str(drive->device_type));
+
+ v3_raise_irq(dev->vm, channel->irq);
+ } else {
+ PrintDebug("\t\tRaising irq but irq is disabled\n");
+ }
+
+ return;
+}
+
+static void rd_lower_irq(struct vm_device *dev, struct channel_t * channel) {
+ PrintDebug("[lower_irq] irq = %d\n", channel->irq);
+ v3_lower_irq(dev->vm, channel->irq);
+}
+
+
+
+
+
+
+
+//////////////////////////////////////////////////////////////////////////
+
+/*
+ * ATAPI subroutines
+ */
+
+
+
+int handle_atapi_packet_command(struct vm_device * dev, struct channel_t * channel, ushort_t value) {
+ struct ramdisk_t * ramdisk = (struct ramdisk_t *)(dev->private_data);
+ struct drive_t * drive = get_selected_drive(channel);
+ struct controller_t * controller = &(drive->controller);
+
+ if (controller->buffer_index >= PACKET_SIZE) {
+ PrintError("ATAPI packet exceeded maximum length: buffer_index (%d) >= PACKET_SIZE\n",
+ controller->buffer_index);
+ return -1;
+ }
+
+ controller->buffer[controller->buffer_index] = value;
+ controller->buffer[controller->buffer_index + 1] = (value >> 8);
+ controller->buffer_index += 2;
+
+
+ /* if packet completely writtten */
+ if (controller->buffer_index >= PACKET_SIZE) {
+ // complete command received
+ Bit8u atapi_command = controller->buffer[0];
+
+ PrintDebug("\t\tcdrom: ATAPI command 0x%x started\n", atapi_command);
+
+ switch (atapi_command) {
+ case 0x00: // test unit ready
+ {
+ PrintDebug("Testing unit ready\n");
+ if (drive->cdrom.ready) {
+ rd_atapi_cmd_nop(dev, channel);
+ } else {
+ PrintError("CDROM not ready in test unit ready\n");
+ rd_atapi_cmd_error(dev, channel, SENSE_NOT_READY, ASC_MEDIUM_NOT_PRESENT);
+ }
+
+ rd_raise_interrupt(dev, channel);
+
+ break;
+ }
+ case 0x03: // request sense
+ {
+ int alloc_length = controller->buffer[4];
+
+ if (rd_init_send_atapi_command(dev, channel, atapi_command, 18, alloc_length, false) == -1) {
+ PrintError("Error sending atapi command in Request Sense\n");
+ return -1;
+ }
+
+ // sense data
+ controller->buffer[0] = 0x70 | (1 << 7);
+ controller->buffer[1] = 0;
+ controller->buffer[2] = drive->sense.sense_key;
+ controller->buffer[3] = drive->sense.information.arr[0];
+ controller->buffer[4] = drive->sense.information.arr[1];
+ controller->buffer[5] = drive->sense.information.arr[2];
+ controller->buffer[6] = drive->sense.information.arr[3];
+ controller->buffer[7] = 17 - 7;
+ controller->buffer[8] = drive->sense.specific_inf.arr[0];
+ controller->buffer[9] = drive->sense.specific_inf.arr[1];
+ controller->buffer[10] = drive->sense.specific_inf.arr[2];
+ controller->buffer[11] = drive->sense.specific_inf.arr[3];
+ controller->buffer[12] = drive->sense.asc;
+ controller->buffer[13] = drive->sense.ascq;
+ controller->buffer[14] = drive->sense.fruc;
+ controller->buffer[15] = drive->sense.key_spec.arr[0];
+ controller->buffer[16] = drive->sense.key_spec.arr[1];
+ controller->buffer[17] = drive->sense.key_spec.arr[2];
+
+ rd_ready_to_send_atapi(dev, channel);
+ break;
+ }
+ case 0x1b: // start stop unit
+ {
+ //bx_bool Immed = (controller->buffer[1] >> 0) & 1;
+ rd_bool LoEj = (controller->buffer[4] >> 1) & 1;
+ rd_bool Start = (controller->buffer[4] >> 0) & 1;
+
+ // stop the disc
+ if ((!LoEj) && (!Start)) {
+ PrintError("FIXME: Stop disc not implemented\n");
+
+ rd_atapi_cmd_nop(dev, channel);
+ rd_raise_interrupt(dev, channel);
+
+ } else if (!LoEj && Start) { // start (spin up) the disc
+
+ drive->cdrom.cd->start_cdrom(drive->private_data);
+
+ PrintError("FIXME: ATAPI start disc not reading TOC\n");
+ rd_atapi_cmd_nop(dev, channel);
+ rd_raise_interrupt(dev, channel);
+
+ } else if (LoEj && !Start) { // Eject the disc
+ rd_atapi_cmd_nop(dev, channel);
+ PrintDebug("Ejecting Disk\n");
+ if (drive->cdrom.ready) {
+
+ drive->cdrom.cd->eject_cdrom(drive->private_data);
+
+ drive->cdrom.ready = 0;
+ //bx_options.atadevice[channel][SLAVE_SELECTED(channel)].Ostatus->set(EJECTED);
+ //bx_gui->update_drive_status_buttons();
+ }
+ rd_raise_interrupt(dev, channel);
+
+ } else { // Load the disc
+ // My guess is that this command only closes the tray, that's a no-op for us
+ rd_atapi_cmd_nop(dev, channel);
+ rd_raise_interrupt(dev, channel);
+ }
+ break;
+ }
+ case 0xbd: // mechanism status
+ {
+ uint16_t alloc_length = rd_read_16bit(controller->buffer + 8);
+
+ if (alloc_length == 0) {
+ PrintError("Zero allocation length to MECHANISM STATUS not impl.\n");
+ return -1;
+ }
+
+ if (rd_init_send_atapi_command(dev, channel, atapi_command, 8, alloc_length, false) == -1) {
+ PrintError("Error sending atapi command in mechanism status\n");
+ return -1;
+ }
+
+ controller->buffer[0] = 0; // reserved for non changers
+ controller->buffer[1] = 0; // reserved for non changers
+
+ controller->buffer[2] = 0; // Current LBA (TODO!)
+ controller->buffer[3] = 0; // Current LBA (TODO!)
+ controller->buffer[4] = 0; // Current LBA (TODO!)
+
+ controller->buffer[5] = 1; // one slot
+
+ controller->buffer[6] = 0; // slot table length
+ controller->buffer[7] = 0; // slot table length
+
+ rd_ready_to_send_atapi(dev, channel);
+ break;
+ }
+ case 0x5a: // mode sense
+ {
+ uint16_t alloc_length = rd_read_16bit(controller->buffer + 7);
+
+ Bit8u PC = controller->buffer[2] >> 6;
+ Bit8u PageCode = controller->buffer[2] & 0x3f;
+
+ switch (PC) {
+ case 0x0: // current values
+ {
+ switch (PageCode) {
+ case 0x01: // error recovery
+ {
+
+ if (rd_init_send_atapi_command(dev, channel, atapi_command, sizeof(struct error_recovery_t) + 8, alloc_length, false) == -1) {
+ PrintError("Error sending atapi command in mode sense error recovery\n");
+ return -1;
+ }
+
+ rd_init_mode_sense_single(dev, channel, &(drive->cdrom.current.error_recovery),
+ sizeof(struct error_recovery_t));
+ rd_ready_to_send_atapi(dev, channel);
+ break;
+ }
+ case 0x2a: // CD-ROM capabilities & mech. status
+ {
+
+ if (rd_init_send_atapi_command(dev, channel, atapi_command, 28, alloc_length, false) == -1) {
+ PrintError("Error sending atapi command in CDROM caps/mech mode-sense\n");
+ return -1;
+ }
+
+ rd_init_mode_sense_single(dev, channel, &(controller->buffer[8]), 28);
+
+ controller->buffer[8] = 0x2a;
+ controller->buffer[9] = 0x12;
+ controller->buffer[10] = 0x00;
+ controller->buffer[11] = 0x00;
+ // Multisession, Mode 2 Form 2, Mode 2 Form 1
+ controller->buffer[12] = 0x70;
+ controller->buffer[13] = (3 << 5);
+ controller->buffer[14] = (unsigned char) (1 |
+ (drive->cdrom.locked ? (1 << 1) : 0) |
+ (1 << 3) |
+ (1 << 5));
+ controller->buffer[15] = 0x00;
+ controller->buffer[16] = (706 >> 8) & 0xff;
+ controller->buffer[17] = 706 & 0xff;
+ controller->buffer[18] = 0;
+ controller->buffer[19] = 2;
+ controller->buffer[20] = (512 >> 8) & 0xff;
+ controller->buffer[21] = 512 & 0xff;
+ controller->buffer[22] = (706 >> 8) & 0xff;
+ controller->buffer[23] = 706 & 0xff;
+ controller->buffer[24] = 0;
+ controller->buffer[25] = 0;
+ controller->buffer[26] = 0;
+ controller->buffer[27] = 0;
+ rd_ready_to_send_atapi(dev, channel);
+ break;
+ }
+ case 0x0d: // CD-ROM
+ case 0x0e: // CD-ROM audio control
+ case 0x3f: // all
+ {
+ PrintError("Ramdisk: cdrom: MODE SENSE (curr), code=%x not implemented yet\n",
+ PageCode);
+ rd_atapi_cmd_error(dev, channel, SENSE_ILLEGAL_REQUEST,
+ ASC_INV_FIELD_IN_CMD_PACKET);
+ rd_raise_interrupt(dev, channel);
+ break;
+ }
+ default:
+ {
+ // not implemeted by this device
+ PrintError("\t\tcdrom: MODE SENSE PC=%x, PageCode=%x, not implemented by device\n",
+ PC, PageCode);
+ rd_atapi_cmd_error(dev, channel, SENSE_ILLEGAL_REQUEST,
+ ASC_INV_FIELD_IN_CMD_PACKET);
+ rd_raise_interrupt(dev, channel);
+ break;
+ }
+ }
+ break;
+ }
+ case 0x1: // changeable values
+ {
+ switch (PageCode) {
+ case 0x01: // error recovery
+ case 0x0d: // CD-ROM
+ case 0x0e: // CD-ROM audio control
+ case 0x2a: // CD-ROM capabilities & mech. status
+ case 0x3f: // all
+ {
+ PrintError("cdrom: MODE SENSE (chg), code=%x not implemented yet\n",
+ PageCode);
+ rd_atapi_cmd_error(dev, channel, SENSE_ILLEGAL_REQUEST,
+ ASC_INV_FIELD_IN_CMD_PACKET);
+ rd_raise_interrupt(dev, channel);
+ break;
+ }
+ default:
+ {
+ // not implemeted by this device
+ PrintError("Changeable values of mode sense not supported by cdrom\n");
+ PrintDebug("\t\tcdrom: MODE SENSE PC=%x, PageCode=%x, not implemented by device\n",
+ PC, PageCode);
+ rd_atapi_cmd_error(dev, channel, SENSE_ILLEGAL_REQUEST,
+ ASC_INV_FIELD_IN_CMD_PACKET);
+ rd_raise_interrupt(dev, channel);
+ break;
+ }
+ }
+ break;
+ }
+ case 0x2: // default values
+ {
+ switch (PageCode) {
+ case 0x01: // error recovery
+ case 0x0d: // CD-ROM
+ case 0x0e: // CD-ROM audio control
+ case 0x2a: // CD-ROM capabilities & mech. status
+ case 0x3f: // all
+ PrintError("Default values of mode sense not supported by cdrom\n");
+ PrintDebug("cdrom: MODE SENSE (dflt), code=%x\n",
+ PageCode);
+ return -1;
+
+ default:
+ {
+ PrintError("Default values of mode sense not implemented in cdrom\n");
+ // not implemeted by this device
+ PrintDebug("cdrom: MODE SENSE PC=%x, PageCode=%x, not implemented by device\n",
+ PC, PageCode);
+ rd_atapi_cmd_error(dev, channel, SENSE_ILLEGAL_REQUEST,
+ ASC_INV_FIELD_IN_CMD_PACKET);
+ rd_raise_interrupt(dev, channel);
+ break;
+ }
+ }
+ break;
+ }
+ case 0x3: // saved values not implemented
+ {
+ PrintError("\t\tSaved values not implemented in mode sense\n");
+ rd_atapi_cmd_error(dev, channel, SENSE_ILLEGAL_REQUEST, ASC_SAVING_PARAMETERS_NOT_SUPPORTED);
+ rd_raise_interrupt(dev, channel);
+ break;
+ }
+ default:
+ {
+ PrintError("Unsupported Mode sense value\n");
+ return -1;
+ break;
+ }
+ }
+ break;
+ }
+ case 0x12: // inquiry
+ {
+ uint8_t alloc_length = controller->buffer[4];
+
+ if (rd_init_send_atapi_command(dev, channel, atapi_command, 36, alloc_length, false) == -1) {
+ PrintError("Error sending atapi command in inquiry\n");
+ return -1;
+ }
+
+ controller->buffer[0] = 0x05; // CD-ROM
+ controller->buffer[1] = 0x80; // Removable
+ controller->buffer[2] = 0x00; // ISO, ECMA, ANSI version
+ controller->buffer[3] = 0x21; // ATAPI-2, as specified
+ controller->buffer[4] = 31; // additional length (total 36)
+ controller->buffer[5] = 0x00; // reserved
+ controller->buffer[6] = 0x00; // reserved
+ controller->buffer[7] = 0x00; // reserved
+
+ // Vendor ID
+ const char* vendor_id = "VTAB ";
+ int i;
+ for (i = 0; i < 8; i++) {
+ controller->buffer[8+i] = vendor_id[i];
+ }
+
+ // Product ID
+ const char* product_id = "Turbo CD-ROM ";
+ for (i = 0; i < 16; i++) {
+ controller->buffer[16+i] = product_id[i];
+ }
+
+ // Product Revision level
+ const char* rev_level = "1.0 ";
+ for (i = 0; i < 4; i++) {
+ controller->buffer[32 + i] = rev_level[i];
+ }
+
+ rd_ready_to_send_atapi(dev, channel);
+ break;
+ }
+ case 0x25: // read cd-rom capacity
+ {
+ // no allocation length???
+ if (rd_init_send_atapi_command(dev, channel, atapi_command, 8, 8, false) == -1) {
+ PrintError("Error sending atapi command in read cdrom capacity\n");
+ return -1;
+ }
+
+ if (drive->cdrom.ready) {
+ uint32_t capacity = drive->cdrom.capacity;
+
+ PrintDebug("\t\tCapacity is %d sectors (%d bytes)\n", capacity, capacity * 2048);
+
+ controller->buffer[0] = (capacity >> 24) & 0xff;
+ controller->buffer[1] = (capacity >> 16) & 0xff;
+ controller->buffer[2] = (capacity >> 8) & 0xff;
+ controller->buffer[3] = (capacity >> 0) & 0xff;
+ controller->buffer[4] = (2048 >> 24) & 0xff;
+ controller->buffer[5] = (2048 >> 16) & 0xff;
+ controller->buffer[6] = (2048 >> 8) & 0xff;
+ controller->buffer[7] = (2048 >> 0) & 0xff;
+
+ rd_ready_to_send_atapi(dev, channel);
+ } else {
+ PrintError("CDROM not ready in read cdrom capacity\n");
+ rd_atapi_cmd_error(dev, channel, SENSE_NOT_READY, ASC_MEDIUM_NOT_PRESENT);
+ rd_raise_interrupt(dev, channel);
+ }
+ break;
+ }
+
+
+ case 0xbe: // read cd
+ {
+ if (drive->cdrom.ready) {
+ PrintError("Read CD with CD present not implemented\n");
+ rd_atapi_cmd_error(dev, channel, SENSE_ILLEGAL_REQUEST, ASC_INV_FIELD_IN_CMD_PACKET);
+ rd_raise_interrupt(dev, channel);
+ } else {
+ PrintError("Drive not ready in read cd with CD present\n");
+ rd_atapi_cmd_error(dev, channel, SENSE_NOT_READY, ASC_MEDIUM_NOT_PRESENT);
+ rd_raise_interrupt(dev, channel);
+ }
+ break;
+ }
+ case 0x43: // read toc
+ {
+ if (drive->cdrom.ready) {
+ int toc_length = 0;
+ bool msf = (controller->buffer[1] >> 1) & 1;
+ uint8_t starting_track = controller->buffer[6];
+
+ uint16_t alloc_length = rd_read_16bit(controller->buffer + 7);
+
+ uint8_t format = (controller->buffer[9] >> 6);
+ int i;
+
+ PrintDebug("Reading CDROM TOC: Format=%d (byte count=%d) (toc length:%d)\n",
+ format, controller->byte_count, toc_length);
+
+ switch (format) {
+ case 0:
+ {
+ if (!(drive->cdrom.cd->read_toc(drive->private_data, controller->buffer,
+ &toc_length, msf, starting_track))) {
+ PrintError("CDROM: Reading Table of Contents Failed\n");
+ rd_atapi_cmd_error(dev, channel, SENSE_ILLEGAL_REQUEST,
+ ASC_INV_FIELD_IN_CMD_PACKET);
+ rd_raise_interrupt(dev, channel);
+ break;
+ }
+
+
+ if (rd_init_send_atapi_command(dev, channel, atapi_command, toc_length, alloc_length, false) == -1) {
+ PrintError("Failed to init send atapi command in read toc (fmt=%d)\n", format);
+ return -1;
+ }
+
+ rd_ready_to_send_atapi(dev, channel);
+
+ break;
+ }
+ case 1:
+ // multi session stuff. we ignore this and emulate a single session only
+
+ if (rd_init_send_atapi_command(dev, channel, atapi_command, 12, alloc_length, false) == -1) {
+ PrintError("Failed to init send atapi command in read toc (fmt=%d)\n", format);
+ return -1;
+ }
+
+ controller->buffer[0] = 0;
+ controller->buffer[1] = 0x0a;
+ controller->buffer[2] = 1;
+ controller->buffer[3] = 1;
+
+ for (i = 0; i < 8; i++) {
+ controller->buffer[4 + i] = 0;
+ }
+
+ rd_ready_to_send_atapi(dev, channel);
+ break;
+
+ case 2:
+ default:
+ PrintError("(READ TOC) Format %d not supported\n", format);
+ return -1;
+ }
+ } else {
+ PrintError("CDROM not ready in read toc\n");
+ rd_atapi_cmd_error(dev, channel, SENSE_NOT_READY, ASC_MEDIUM_NOT_PRESENT);
+ rd_raise_interrupt(dev, channel);
+ }
+ break;
+ }
+ case 0x28: // read (10)
+ case 0xa8: // read (12)
+ {
+
+ uint32_t transfer_length;
+ if (atapi_command == 0x28) {
+ transfer_length = rd_read_16bit(controller->buffer + 7);
+ } else {
+ transfer_length = rd_read_32bit(controller->buffer + 6);
+ }
+
+ uint32_t lba = rd_read_32bit(controller->buffer + 2);
+
+ if (!(drive->cdrom.ready)) {
+ PrintError("CDROM Error: Not Ready (ATA%d/%d)\n",
+ get_channel_no(ramdisk, channel), get_drive_no(channel, drive));
+ rd_atapi_cmd_error(dev, channel, SENSE_NOT_READY, ASC_MEDIUM_NOT_PRESENT);
+ rd_raise_interrupt(dev, channel);
+ break;
+ }
+
+ if (transfer_length == 0) {
+ PrintError("READ(%d) with transfer length 0, ok\n",
+ (atapi_command == 0x28) ? 10 : 12);
+ rd_atapi_cmd_nop(dev, channel);
+ rd_raise_interrupt(dev, channel);
+ break;
+ }
+
+ if (lba + transfer_length > drive->cdrom.capacity) {
+ PrintError("CDROM Error: Capacity exceeded [capacity=%d] (ATA%d/%d)\n",
+ drive->cdrom.capacity,
+ get_channel_no(ramdisk, channel), get_drive_no(channel, drive));
+ rd_atapi_cmd_error(dev, channel, SENSE_ILLEGAL_REQUEST, ASC_LOGICAL_BLOCK_OOR);
+ rd_raise_interrupt(dev, channel);
+ break;
+ }
+
+ PrintDebug("\t\tcdrom: READ (%d) LBA=%d LEN=%d\n",
+ (atapi_command == 0x28) ? 10 : 12,
+ lba, transfer_length);
+
+ // handle command
+ if (rd_init_send_atapi_command(dev, channel, atapi_command, transfer_length * 2048,
+ transfer_length * 2048, true) == -1) {
+ PrintError("CDROM Error: Atapi command send error\n");
+ return -1;
+ }
+
+ drive->cdrom.remaining_blocks = transfer_length;
+ drive->cdrom.next_lba = lba;
+ rd_ready_to_send_atapi(dev, channel);
+ break;
+ }
+ case 0x2b: // seek
+ {
+ uint32_t lba = rd_read_32bit(controller->buffer + 2);
+
+ if (!(drive->cdrom.ready)) {
+ PrintError("CDROM not ready in seek\n");
+ rd_atapi_cmd_error(dev, channel, SENSE_NOT_READY, ASC_MEDIUM_NOT_PRESENT);
+ rd_raise_interrupt(dev, channel);
+ break;
+ }
+
+ if (lba > drive->cdrom.capacity) {
+ PrintError("LBA is greater than CDROM capacity in seek\n");
+ rd_atapi_cmd_error(dev, channel, SENSE_ILLEGAL_REQUEST, ASC_LOGICAL_BLOCK_OOR);
+ rd_raise_interrupt(dev, channel);
+ break;
+ }
+
+ PrintError("\t\tcdrom: SEEK (ignored)\n");
+
+ rd_atapi_cmd_nop(dev, channel);
+ rd_raise_interrupt(dev, channel);
+
+ break;
+ }
+ case 0x1e: // prevent/allow medium removal
+ {
+
+ if (drive->cdrom.ready) {
+ drive->cdrom.locked = controller->buffer[4] & 1;
+ rd_atapi_cmd_nop(dev, channel);
+ } else {
+ PrintError("CD not ready in prevent/allow medium removal\n");
+ rd_atapi_cmd_error(dev, channel, SENSE_NOT_READY, ASC_MEDIUM_NOT_PRESENT);
+ }
+
+ rd_raise_interrupt(dev, channel);
+
+ break;
+ }
+ case 0x42: // read sub-channel
+ {
+ //bool msf = get_packet_field(channel,1, 1, 1);
+ bool sub_q = get_packet_field(channel,2, 6, 1);
+ //uint8_t data_format = get_packet_byte(channel,3);
+ //uint8_t track_number = get_packet_byte(channel,6);
+ uint16_t alloc_length = get_packet_word(channel,7);
+
+
+ /*
+ UNUSED(msf);
+ UNUSED(data_format);
+ UNUSED(track_number);
+ */
+ if (!(drive->cdrom.ready)) {
+ PrintError("CDROM not ready in read sub-channel\n");
+ rd_atapi_cmd_error(dev, channel, SENSE_NOT_READY, ASC_MEDIUM_NOT_PRESENT);
+ rd_raise_interrupt(dev, channel);
+ } else {
+ controller->buffer[0] = 0;
+ controller->buffer[1] = 0; // audio not supported
+ controller->buffer[2] = 0;
+ controller->buffer[3] = 0;
+
+ int ret_len = 4; // header size
+
+ if (sub_q) { // !sub_q == header only
+ PrintError("Read sub-channel with SubQ not implemented\n");
+ rd_atapi_cmd_error(dev, channel, SENSE_ILLEGAL_REQUEST,
+ ASC_INV_FIELD_IN_CMD_PACKET);
+ rd_raise_interrupt(dev, channel);
+ }
+
+ if (rd_init_send_atapi_command(dev, channel, atapi_command, ret_len, alloc_length, false) == -1) {
+ PrintError("Error sending atapi command in read sub-channel\n");
+ return -1;
+ }
+ rd_ready_to_send_atapi(dev, channel);
+ }
+ break;
+ }
+ case 0x51: // read disc info
+ {
+ // no-op to keep the Linux CD-ROM driver happy
+ PrintError("Error: Read disk info no-op to keep the Linux CD-ROM driver happy\n");
+ rd_atapi_cmd_error(dev, channel, SENSE_ILLEGAL_REQUEST, ASC_INV_FIELD_IN_CMD_PACKET);
+ rd_raise_interrupt(dev, channel);
+ break;
+ }
+ case 0x55: // mode select
+ case 0xa6: // load/unload cd
+ case 0x4b: // pause/resume
+ case 0x45: // play audio
+ case 0x47: // play audio msf
+ case 0xbc: // play cd
+ case 0xb9: // read cd msf
+ case 0x44: // read header
+ case 0xba: // scan
+ case 0xbb: // set cd speed
+ case 0x4e: // stop play/scan
+ case 0x46: // ???
+ case 0x4a: // ???
+ PrintError("ATAPI command 0x%x not implemented yet\n",
+ atapi_command);
+ rd_atapi_cmd_error(dev, channel, SENSE_ILLEGAL_REQUEST, ASC_INV_FIELD_IN_CMD_PACKET);
+ rd_raise_interrupt(dev, channel);
+ break;
+ default:
+ PrintError("Unknown ATAPI command 0x%x (%d)\n",
+ atapi_command, atapi_command);
+ // We'd better signal the error if the user chose to continue
+ rd_atapi_cmd_error(dev, channel, SENSE_ILLEGAL_REQUEST, ASC_INV_FIELD_IN_CMD_PACKET);
+ rd_raise_interrupt(dev, channel);
+ break;
+ }
+ }
+
+
+ return 0;
+}
+
+
+
+
+int rd_init_send_atapi_command(struct vm_device * dev, struct channel_t * channel, Bit8u command, int req_length, int alloc_length, bool lazy)
+{
+ struct drive_t * drive = &(channel->drives[channel->drive_select]);
+ struct controller_t * controller = &(drive->controller);
+
+ // controller->byte_count is a union of controller->cylinder_no;
+ // lazy is used to force a data read in the buffer at the next read.
+
+ PrintDebug("[rd_init_send_atapi_cmd]\n");
+
+ if (controller->byte_count == 0xffff) {
+ controller->byte_count = 0xfffe;
+ }
+
+ if ((controller->byte_count & 1) &&
+ !(alloc_length <= controller->byte_count)) {
+
+ PrintDebug("\t\tOdd byte count (0x%04x) to ATAPI command 0x%02x, using 0x%x\n",
+ controller->byte_count,
+ command,
+ controller->byte_count - 1);
+
+ controller->byte_count -= 1;
+ }
+
+ if (controller->byte_count == 0) {
+ PrintError("\t\tATAPI command with zero byte count\n");
+ return -1;
+ }
+
+ if (alloc_length < 0) {
+ PrintError("\t\tAllocation length < 0\n");
+ return -1;
+ }
+
+ if (alloc_length == 0) {
+ alloc_length = controller->byte_count;
+ }
+
+ controller->interrupt_reason.i_o = 1;
+ controller->interrupt_reason.c_d = 0;
+ controller->status.busy = 0;
+ controller->status.drq = 1;
+ controller->status.err = 0;
+
+ // no bytes transfered yet
+ if (lazy) {
+ controller->buffer_index = 2048;
+ } else {
+ controller->buffer_index = 0;
+ }
+
+ controller->drq_index = 0;
+
+ if (controller->byte_count > req_length) {
+ controller->byte_count = req_length;
+ }
+
+ if (controller->byte_count > alloc_length) {
+ controller->byte_count = alloc_length;
+ }
+
+ drive->atapi.command = command;
+ drive->atapi.drq_bytes = controller->byte_count;
+ drive->atapi.total_bytes_remaining = (req_length < alloc_length) ? req_length : alloc_length;
+
+ // if (lazy) {
+ // // bias drq_bytes and total_bytes_remaining
+ // SELECTED_DRIVE(channel).atapi.drq_bytes += 2048;
+ // SELECTED_DRIVE(channel).atapi.total_bytes_remaining += 2048;
+ // }
+
+ return 0;
+}
+
+
+
+void rd_ready_to_send_atapi(struct vm_device * dev, struct channel_t * channel) {
+ PrintDebug("[rd_ready_to_send_atapi]\n");
+
+ rd_raise_interrupt(dev, channel);
+}
+
+
+
+
+
+void rd_atapi_cmd_error(struct vm_device * dev, struct channel_t * channel, sense_t sense_key, asc_t asc)
+{
+ struct drive_t * drive = &(channel->drives[channel->drive_select]);
+ struct controller_t * controller = &(drive->controller);
+
+
+ struct ramdisk_t *ramdisk = (struct ramdisk_t *)(dev->private_data);
+ PrintError("[rd_atapi_cmd_error]\n");
+ PrintError("Error: atapi_cmd_error channel=%02x key=%02x asc=%02x\n",
+ get_channel_no(ramdisk, channel), sense_key, asc);
+
+
+ controller->error_register = sense_key << 4;
+ controller->interrupt_reason.i_o = 1;
+ controller->interrupt_reason.c_d = 1;
+ controller->interrupt_reason.rel = 0;
+ controller->status.busy = 0;
+ controller->status.drive_ready = 1;
+ controller->status.write_fault = 0;
+ controller->status.drq = 0;
+ controller->status.err = 1;
+
+ drive->sense.sense_key = sense_key;
+ drive->sense.asc = asc;
+ drive->sense.ascq = 0;
+}
+
+
+
+void rd_atapi_cmd_nop(struct vm_device * dev, struct channel_t * channel)
+{
+ struct drive_t * drive = &(channel->drives[channel->drive_select]);
+ struct controller_t * controller = &(drive->controller);
+
+ PrintDebug("[rd_atapi_cmd_nop]\n");
+ controller->interrupt_reason.i_o = 1;
+ controller->interrupt_reason.c_d = 1;
+ controller->interrupt_reason.rel = 0;
+ controller->status.busy = 0;
+ controller->status.drive_ready = 1;
+ controller->status.drq = 0;
+ controller->status.err = 0;
+}
+
+
+
+
+void rd_identify_ATAPI_drive(struct vm_device * dev, struct channel_t * channel)
+{
+ struct drive_t * drive = &(channel->drives[channel->drive_select]);
+ struct controller_t * controller = &(drive->controller);
+
+
+ uint_t i;
+ const char* serial_number = " VT00001\0\0\0\0\0\0\0\0\0\0\0\0";
+ const char* firmware = "ALPHA1 ";
+
+ drive->id_drive[0] = (2 << 14) | (5 << 8) | (1 << 7) | (2 << 5) | (0 << 0); // Removable CDROM, 50us response, 12 byte packets
+
+ for (i = 1; i <= 9; i++) {
+ drive->id_drive[i] = 0;
+ }
+
+ for (i = 0; i < 10; i++) {
+ drive->id_drive[10 + i] = ((serial_number[i * 2] << 8) |
+ (serial_number[(i * 2) + 1]));
+ }
+
+ for (i = 20; i <= 22; i++) {
+ drive->id_drive[i] = 0;
+ }
+
+ for (i = 0; i < strlen(firmware)/2; i++) {
+ drive->id_drive[23 + i] = ((firmware[i * 2] << 8) |
+ (firmware[(i * 2) + 1]));
+ }
+ V3_ASSERT((23 + i) == 27);
+
+ for (i = 0; i < strlen((char *)(drive->model_no)) / 2; i++) {
+ drive->id_drive[27 + i] = ((drive->model_no[i * 2] << 8) |
+ (drive->model_no[(i * 2) + 1]));
+ }
+ V3_ASSERT((27 + i) == 47);
+
+ drive->id_drive[47] = 0;
+ drive->id_drive[48] = 1; // 32 bits access
+
+ drive->id_drive[49] = (1 << 9); // LBA supported
+
+ drive->id_drive[50] = 0;
+ drive->id_drive[51] = 0;
+ drive->id_drive[52] = 0;
+
+ drive->id_drive[53] = 3; // words 64-70, 54-58 valid
+
+ for (i = 54; i <= 62; i++) {
+ drive->id_drive[i] = 0;
+ }
+
+ // copied from CFA540A
+ drive->id_drive[63] = 0x0103; // variable (DMA stuff)
+ drive->id_drive[64] = 0x0001; // PIO
+ drive->id_drive[65] = 0x00b4;
+ drive->id_drive[66] = 0x00b4;
+ drive->id_drive[67] = 0x012c;
+ drive->id_drive[68] = 0x00b4;
+
+ drive->id_drive[69] = 0;
+ drive->id_drive[70] = 0;
+ drive->id_drive[71] = 30; // faked
+ drive->id_drive[72] = 30; // faked
+ drive->id_drive[73] = 0;
+ drive->id_drive[74] = 0;
+
+ drive->id_drive[75] = 0;
+
+ for (i = 76; i <= 79; i++) {
+ drive->id_drive[i] = 0;
+ }
+
+ drive->id_drive[80] = 0x1e; // supports up to ATA/ATAPI-4
+ drive->id_drive[81] = 0;
+ drive->id_drive[82] = 0;
+ drive->id_drive[83] = 0;
+ drive->id_drive[84] = 0;
+ drive->id_drive[85] = 0;
+ drive->id_drive[86] = 0;
+ drive->id_drive[87] = 0;
+ drive->id_drive[88] = 0;
+
+ for (i = 89; i <= 126; i++) {
+ drive->id_drive[i] = 0;
+ }
+
+ drive->id_drive[127] = 0;
+ drive->id_drive[128] = 0;
+
+ for (i = 129; i <= 159; i++) {
+ drive->id_drive[i] = 0;
+ }
+
+ for (i = 160; i <= 255; i++) {
+ drive->id_drive[i] = 0;
+ }
+
+ // now convert the id_drive array (native 256 word format) to
+ // the controller buffer (512 bytes)
+ Bit16u temp16;
+ for (i = 0; i <= 255; i++) {
+ temp16 = drive->id_drive[i];
+ controller->buffer[i * 2] = temp16 & 0x00ff;
+ controller->buffer[i * 2 + 1] = temp16 >> 8;
+ }
+
+ return;
+}
+
+
+
+
+
+
+
+static
+void rd_init_mode_sense_single(struct vm_device * dev,
+ struct channel_t * channel, const void* src, int size)
+{
+ struct drive_t * drive = &(channel->drives[channel->drive_select]);
+ struct controller_t * controller = &(drive->controller);
+
+ PrintDebug("[rd_init_mode_sense_single]\n");
+
+ // Header
+ controller->buffer[0] = (size + 6) >> 8;
+ controller->buffer[1] = (size + 6) & 0xff;
+ controller->buffer[2] = 0x70; // no media present
+ controller->buffer[3] = 0; // reserved
+ controller->buffer[4] = 0; // reserved
+ controller->buffer[5] = 0; // reserved
+ controller->buffer[6] = 0; // reserved
+ controller->buffer[7] = 0; // reserved
+
+ // Data
+ memcpy(controller->buffer + 8, src, size);
+}
+
+
+
+static void rd_command_aborted(struct vm_device * dev,
+ struct channel_t * channel, unsigned value) {
+ struct drive_t * drive = &(channel->drives[channel->drive_select]);
+ struct controller_t * controller = &(drive->controller);
+
+ PrintError("[rd_command_aborted]\n");
+ PrintError("\t\taborting on command 0x%02x {%s}\n", value, device_type_to_str(drive->device_type));
+
+ controller->current_command = 0;
+ controller->status.busy = 0;
+ controller->status.drive_ready = 1;
+ controller->status.err = 1;
+ controller->error_register = 0x04; // command ABORTED
+ controller->status.drq = 0;
+ controller->status.seek_complete = 0;
+ controller->status.corrected_data = 0;
+ controller->buffer_index = 0;
+
+ rd_raise_interrupt(dev, channel);
+}
+
+
+static int ramdisk_init_device(struct vm_device *dev) {
+ struct ramdisk_t *ramdisk= (struct ramdisk_t *)dev->private_data;
+
+ PrintDebug("Initializing Ramdisk\n");
+
+
+ rd_init_hardware(ramdisk);
+
+
+ v3_dev_hook_io(dev, PRI_CTRL_PORT,
+ &read_status_port, &write_ctrl_port);
+
+ v3_dev_hook_io(dev, PRI_DATA_PORT,
+ &read_data_port, &write_data_port);
+ v3_dev_hook_io(dev, PRI_FEATURES_PORT,
+ &read_general_port, &write_general_port);
+ v3_dev_hook_io(dev, PRI_SECT_CNT_PORT,
+ &read_general_port, &write_general_port);
+ v3_dev_hook_io(dev, PRI_SECT_ADDR1_PORT,
+ &read_general_port, &write_general_port);
+ v3_dev_hook_io(dev, PRI_SECT_ADDR2_PORT,
+ &read_general_port, &write_general_port);
+ v3_dev_hook_io(dev, PRI_SECT_ADDR3_PORT,
+ &read_general_port, &write_general_port);
+ v3_dev_hook_io(dev, PRI_DRV_SEL_PORT,
+ &read_general_port, &write_general_port);
+ v3_dev_hook_io(dev, PRI_CMD_PORT,
+ &read_status_port, &write_cmd_port);
+
+
+ v3_dev_hook_io(dev, SEC_CTRL_PORT,
+ &read_status_port, &write_ctrl_port);
+
+ v3_dev_hook_io(dev, SEC_DATA_PORT,
+ &read_data_port, &write_data_port);
+ v3_dev_hook_io(dev, SEC_FEATURES_PORT,
+ &read_general_port, &write_general_port);
+ v3_dev_hook_io(dev, SEC_SECT_CNT_PORT,
+ &read_general_port, &write_general_port);
+ v3_dev_hook_io(dev, SEC_SECT_ADDR1_PORT,
+ &read_general_port, &write_general_port);
+ v3_dev_hook_io(dev, SEC_SECT_ADDR2_PORT,
+ &read_general_port, &write_general_port);
+ v3_dev_hook_io(dev, SEC_SECT_ADDR3_PORT,
+ &read_general_port, &write_general_port);
+ v3_dev_hook_io(dev, SEC_DRV_SEL_PORT,
+ &read_general_port, &write_general_port);
+ v3_dev_hook_io(dev, SEC_CMD_PORT,
+ &read_status_port, &write_cmd_port);
+
+
+
+ v3_dev_hook_io(dev, SEC_ADDR_REG_PORT,
+ &read_general_port, &write_general_port);
+
+ v3_dev_hook_io(dev, PRI_ADDR_REG_PORT,
+ &read_general_port, &write_general_port);
+
+
+
+ return 0;
+
+}
+
+
+static int ramdisk_deinit_device(struct vm_device *dev) {
+ struct ramdisk_t *ramdisk = (struct ramdisk_t *)(dev->private_data);
+ rd_close_harddrive(ramdisk);
+ return 0;
+}
+
+static struct vm_device_ops dev_ops = {
+ .init = ramdisk_init_device,
+ .deinit = ramdisk_deinit_device,
+ .reset = NULL,
+ .start = NULL,
+ .stop = NULL,
+};
+
+
+
+
+struct vm_device * v3_create_ramdisk()
+{
+
+ struct ramdisk_t *ramdisk;
+ ramdisk = (struct ramdisk_t *)V3_Malloc(sizeof(struct ramdisk_t));
+ V3_ASSERT(ramdisk != NULL);
+
+ PrintDebug("[create_ramdisk]\n");
+
+ struct vm_device * device = v3_create_device("RAMDISK", &dev_ops, ramdisk);
+
+ return device;
+}
+
+
+
+
+#ifdef DEBUG_RAMDISK
+
+static void rd_print_state(struct ramdisk_t * ramdisk) {
+ uchar_t channel;
+ uchar_t device;
+ struct channel_t * channels = (struct channel_t *)(&(ramdisk->channels));
+
+ /*
+ for (channel = 0; channel < MAX_ATA_CHANNEL; channel++) {
+ memset((char *)(channels + channel), 0, sizeof(struct channel_t));
+ }
+ */
+ PrintDebug("sizeof(*channels) = %d\n", sizeof(*channels));
+ PrintDebug("sizeof(channles->drives[0].controller) = %d\n", sizeof((channels->drives[0].controller)));
+ PrintDebug("sizeof(channles->drives[0].cdrom) = %d\n", sizeof((channels->drives[0].cdrom)));
+ PrintDebug("sizeof(channles->drives[0].sense) = %d\n", sizeof((channels->drives[0].sense)));
+ PrintDebug("sizeof(channles->drives[0].atapi) = %d\n", sizeof((channels->drives[0].atapi)));
+
+
+ PrintDebug("sizeof(channles->drives[0].controller.status) = %d\n",
+ sizeof((channels->drives[0].controller.status)));
+ PrintDebug("sizeof(channles->drives[0].controller.sector_count) = %d\n",
+ sizeof((channels->drives[0].controller.sector_count)));
+ PrintDebug("sizeof(channles->drives[0].controller.interrupt_reason) = %d\n",
+ sizeof((channels->drives[0].controller.interrupt_reason)));
+
+ PrintDebug("sizeof(channles->drives[0].controller.cylinder_no) = %d\n",
+ sizeof((channels->drives[0].controller.cylinder_no)));
+ PrintDebug("sizeof(channles->drives[0].controller.byte_count) = %d\n",
+ sizeof((channels->drives[0].controller.byte_count)));
+
+
+ PrintDebug("sizeof(channles->drives[0].controller.control) = %d\n",
+ sizeof((channels->drives[0].controller.control)));
+
+
+ for (channel = 0; channel < MAX_ATA_CHANNEL; channel++){
+
+ for (device = 0; device < 2; device++){
+
+ // Initialize controller state, even if device is not present
+ PrintDebug("channels[%d].drives[%d].controller.status.busy = %d\n",
+ channel, device,
+ channels[channel].drives[device].controller.status.busy);
+ PrintDebug("channels[%d].drives[%d].controller.status.drive_ready = %d\n",
+ channel, device,
+ channels[channel].drives[device].controller.status.drive_ready);
+ PrintDebug("channels[%d].drives[%d].controller.status.write_fault = %d\n",
+ channel, device,
+ channels[channel].drives[device].controller.status.write_fault);
+ PrintDebug("channels[%d].drives[%d].controller.status.seek_complete = %d\n",
+ channel, device,
+ channels[channel].drives[device].controller.status.seek_complete);
+ PrintDebug("channels[%d].drives[%d].controller.status.drq = %d\n",
+ channel, device,
+ channels[channel].drives[device].controller.status.drq);
+ PrintDebug("channels[%d].drives[%d].controller.status.corrected_data = %d\n",
+ channel, device,
+ channels[channel].drives[device].controller.status.corrected_data);
+ PrintDebug("channels[%d].drives[%d].controller.status.index_pulse = %d\n",
+ channel, device,
+ channels[channel].drives[device].controller.status.index_pulse);
+ PrintDebug("channels[%d].drives[%d].controller.status.index_pulse_count = %d\n",
+ channel, device,
+ channels[channel].drives[device].controller.status.index_pulse_count);
+ PrintDebug("channels[%d].drives[%d].controller.status.err = %d\n",
+ channel, device,
+ channels[channel].drives[device].controller.status.err);
+
+
+ PrintDebug("channels[%d].drives[%d].controller.error_register = %d\n",
+ channel, device,
+ channels[channel].drives[device].controller.error_register);
+ PrintDebug("channels[%d].drives[%d].controller.head_no = %d\n",
+ channel, device,
+ channels[channel].drives[device].controller.head_no);
+ PrintDebug("channels[%d].drives[%d].controller.sector_count = %d\n",
+ channel, device,
+ channels[channel].drives[device].controller.sector_count);
+ PrintDebug("channels[%d].drives[%d].controller.sector_no = %d\n",
+ channel, device,
+ channels[channel].drives[device].controller.sector_no);
+ PrintDebug("channels[%d].drives[%d].controller.cylinder_no = %d\n",
+ channel, device,
+ channels[channel].drives[device].controller.cylinder_no);
+ PrintDebug("channels[%d].drives[%d].controller.current_command = %02x\n",
+ channel, device,
+ channels[channel].drives[device].controller.current_command);
+ PrintDebug("channels[%d].drives[%d].controller.buffer_index = %d\n",
+ channel, device,
+ channels[channel].drives[device].controller.buffer_index);
+
+
+ PrintDebug("channels[%d].drives[%d].controller.control.reset = %d\n",
+ channel, device,
+ channels[channel].drives[device].controller.control.reset);
+ PrintDebug("channels[%d].drives[%d].controller.control.disable_irq = %d\n",
+ channel, device,
+ channels[channel].drives[device].controller.control.disable_irq);
+
+
+ PrintDebug("channels[%d].drives[%d].controller.reset_in_progress = %d\n",
+ channel, device,
+ channels[channel].drives[device].controller.reset_in_progress);
+ PrintDebug("channels[%d].drives[%d].controller.sectors_per_block = %02x\n",
+ channel, device,
+ channels[channel].drives[device].controller.sectors_per_block);
+ PrintDebug("channels[%d].drives[%d].controller.lba_mode = %d\n",
+ channel, device,
+ channels[channel].drives[device].controller.lba_mode);
+ PrintDebug("channels[%d].drives[%d].controller.features = %d\n",
+ channel, device,
+ channels[channel].drives[device].controller.features);
+
+
+ PrintDebug("channels[%d].drives[%d].model_no = %s\n",
+ channel, device,
+ channels[channel].drives[device].model_no);
+ PrintDebug("channels[%d].drives[%d].device_type = %d\n",
+ channel, device,
+ channels[channel].drives[device].device_type);
+ PrintDebug("channels[%d].drives[%d].cdrom.locked = %d\n",
+ channel, device,
+ channels[channel].drives[device].cdrom.locked);
+ PrintDebug("channels[%d].drives[%d].sense.sense_key = %d\n",
+ channel, device,
+ channels[channel].drives[device].sense.sense_key);
+ PrintDebug("channels[%d].drives[%d].sense.asc = %d\n",
+ channel, device,
+ channels[channel].drives[device].sense.asc);
+ PrintDebug("channels[%d].drives[%d].sense.ascq = %d\n",
+ channel, device,
+ channels[channel].drives[device].sense.ascq);
+
+
+
+ PrintDebug("channels[%d].drives[%d].controller.interrupt_reason.c_d = %02x\n",
+ channel, device,
+ channels[channel].drives[device].controller.interrupt_reason.c_d);
+
+ PrintDebug("channels[%d].drives[%d].controller.interrupt_reason.i_o = %02x\n",
+ channel, device,
+ channels[channel].drives[device].controller.interrupt_reason.i_o);
+
+ PrintDebug("channels[%d].drives[%d].controller.interrupt_reason.rel = %02x\n",
+ channel, device,
+ channels[channel].drives[device].controller.interrupt_reason.rel);
+
+ PrintDebug("channels[%d].drives[%d].controller.interrupt_reason.tag = %02x\n",
+ channel, device,
+ channels[channel].drives[device].controller.interrupt_reason.tag);
+
+ PrintDebug("channels[%d].drives[%d].cdrom.ready = %d\n",
+ channel, device,
+ channels[channel].drives[device].cdrom.ready);
+
+ } //for device
+ } //for channel
+
+ return;
+}
+
+
+
+static int check_bit_fields(struct controller_t * controller) {
+ //Check bit fields
+ controller->sector_count = 0;
+ controller->interrupt_reason.c_d = 1;
+ if (controller->sector_count != 0x01) {
+ return INTR_REASON_BIT_ERR;
+ }
+
+ controller->sector_count = 0;
+ controller->interrupt_reason.i_o = 1;
+ if (controller->sector_count != 0x02) {
+ return INTR_REASON_BIT_ERR;
+ }
+
+ controller->sector_count = 0;
+ controller->interrupt_reason.rel = 1;
+ if (controller->sector_count != 0x04) {
+ return INTR_REASON_BIT_ERR;
+ }
+
+ controller->sector_count = 0;
+ controller->interrupt_reason.tag = 3;
+ if (controller->sector_count != 0x18) {
+ return INTR_REASON_BIT_ERR;
+ }
+
+ return 0;
+}
+
+#endif
