-/*
- * Zheng Cui
- * cuizheng@cs.unm.edu
- * July 2008
- */
-
-#include <devices/ramdisk.h>
-#include <palacios/vmm.h>
-#include <devices/cdrom.h>
-#include <devices/ide.h>
-#include <devices/atapi.h>
-
-#ifdef DEBUG_RAMDISK
-//#define Ramdisk_Print(_f, _a...) PrintTrace("\nramdisk.c(%d) " _f, __LINE__, ## _a)
-#define Ramdisk_Print(_f, _a...) PrintTrace("\nramdisk.c " _f, ## _a)
-#else
-#define Ramdisk_Print(_f, _a...)
-#endif
-
-#define RD_PANIC(_f, _a...) \
- do { \
- PrintDebug("ramdisk.c(%d) " _f, __LINE__, ## _a); \
- while(1); \
- } \
- while(0)
-
-#define RD_ERROR(_f, _a...) PrintTrace("\nramdisk.c(%d) " _f, __LINE__, ## _a)
-
-
-
-
-
-
-/*
- * Data type definitions
+/*
+ * This file is part of the Palacios Virtual Machine Monitor developed
+ * by the V3VEE Project with funding from the United States National
+ * Science Foundation and the Department of Energy.
+ *
+ * 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, Jack Lange <jarusl@cs.northwestern.edu>
+ * Copyright (c) 2008, The V3VEE Project <http://www.v3vee.org>
+ * All rights reserved.
*
+ * Author: Jack Lange <jarusl@cs.northwestern.edu>
+ *
+ * This is free software. You are permitted to use,
+ * redistribute, and modify it as specified in the file "V3VEE_LICENSE".
*/
-#define INDEX_PULSE_CYCLE 10
-
-#define MAX_ATA_CHANNEL 4
-
-
-#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
-
-
-// FLAT MODE
-// Open a image. Returns non-negative if successful.
-//int open (const char* pathname);
-
-// Open an image with specific flags. Returns non-negative if successful.
-int rd_open (const char* pathname, int flags);
-
-// Close the image.
-void rd_close ();
-
-// Position ourselves. Return the resulting offset from the
-// beginning of the file.
-off_t rd_lseek (off_t offset, int whence);
-
-// Read count bytes to the buffer buf. Return the number of
-// bytes read (count).
-ssize_t rd_read (void* buf, size_t count);
-
-// Write count bytes from buf. Return the number of bytes
-// written (count).
-ssize_t rd_write (const void* buf, size_t count);
+#include <palacios/vmm.h>
+#include <palacios/vmm_dev_mgr.h>
+#ifndef CONFIG_DEBUG_RAMDISK
+#undef PrintDebug
+#define PrintDebug(fmt, args...)
+#endif
-struct ramdisk_t {
- struct channel_t channels[MAX_ATA_CHANNEL];
+struct disk_state {
+ uint8_t * disk_image;
+ uint32_t capacity; // in bytes
};
-/*
- * Debug facilities
- */
-
-#define ATA_DETECT 0xf0 //0X3E8
-#define ATA_RESET 0xf1 //0X3E9
-#define ATA_CMD_DATA_IN 0xf2 //0X3EA
-#define ATA_CMD_DATA_OUT 0xf3 //0X3EB
-#define ATA_CMD_PACKET 0xf4 //0X3EC
-#define ATAPI_GET_SENSE 0xf5 //0X3ED
-#define ATAPI_IS_READY 0xf6 //0X3EE
-#define ATAPI_IS_CDROM 0xf7 //0X3EF
-
-#define CDEMU_INIT 0xf8 //0X2E8
-#define CDEMU_ISACTIVE 0xf9 //0X2E9
-#define CDEMU_EMULATED_DRIVE 0xfa //0X2EA
-#define CDROM_BOOT 0xfb //0X2EB
-
-
-#define HARD_DRIVE_POST 0xfc //0X2EC
-
-
-#define ATA_DEVICE_NO 0xfd //0X2ED
-#define ATA_DEVICE_TYPE 0xfe //0X2ED
-
-#define INT13_HARDDISK 0xff //0x2ef
-#define INT13_CDROM 0xe0 //0x2f8
-#define INT13_CDEMU 0xe1 //0x2f9
-#define INT13_ELTORITO 0xe2 //0x2fa
-#define INT13_DISKETTE_FUNCTION 0xe3 //0x2fb
+static int read(uint8_t * buf, uint64_t lba, uint64_t num_bytes, void * private_data) {
+ struct disk_state * disk = (struct disk_state *)private_data;
+ PrintDebug("Reading %d bytes from %p to %p\n", (uint32_t)num_bytes, (uint8_t *)(disk->disk_image + lba), buf);
+ memcpy(buf, (uint8_t *)(disk->disk_image + lba), num_bytes);
-
-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 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 int write(uint8_t * buf, uint64_t lba, uint64_t num_bytes, void * private_data) {
+ struct disk_state * disk = (struct disk_state *)private_data;
-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);
-}
+ PrintDebug("Writing %d bytes from %p to %p\n", (uint32_t)num_bytes, buf, (uint8_t *)(disk->disk_image + lba));
+ memcpy((uint8_t *)(disk->disk_image + lba), buf, num_bytes);
-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;
+ return 0;
}
-static inline uint16_t rd_read_16bit(const uint8_t* buf) {
- return (buf[0] << 8) | buf[1];
-}
-
+static uint64_t get_capacity(void * private_data) {
+ struct disk_state * disk = (struct disk_state *)private_data;
+ PrintDebug("Querying RAMDISK capacity %d\n",
+ (uint32_t)(disk->capacity));
-static inline uint32_t rd_read_32bit(const uint8_t* buf) {
- return (buf[0] << 24) | (buf[1] << 16) | (buf[2] << 8) | buf[3];
+ return disk->capacity;
}
-////////////////////////////////////////////////////////////////////////////
-
-
-/*
- * 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);
-
-
-/*
- * Interrupt handling
- */
-static void rd_raise_interrupt(struct vm_device * dev, struct channel_t * channel);
-static void rd_lower_irq(struct vm_device *dev, Bit32u irq);
-
-
-
-/*
- * Helper routines
- */
-
-
-
-#ifdef DEBUG_RAMDISK
-static void rd_print_state(struct ramdisk_t *ramdisk, struct vm_device *dev)
-static int check_bit_fields(struct controller_t * controller);
-#endif
-////////////////////////////////////////////////////////////////////
-
-
-
-
-
-Bit32u rd_init_hardware(struct ramdisk_t *ramdisk) {
- uint_t channel_num;
- uint_t device;
- struct channel_t *channels = (struct channel_t *)(&(ramdisk->channels));
-
- Ramdisk_Print("[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), " ");
- }
-
-
-
-
- if (channel_num == 1) {
-
- channel->ioaddr1 = 0x170;
- channel->ioaddr2 = 0x370;
- channel->irq = 15;
- channel->drive_select = 0;
-
- if (device == 0) {
- // Make model string
- strncpy((char*)(drive->model_no), "V3VEE Ramdisk", 40);
- while (strlen((char *)(drive->model_no)) < 40) {
- strcat ((char*)(drive->model_no), " ");
- }
-
- Ramdisk_Print("CDROM on target %d/%d\n", channel, device);
-
- drive->device_type = IDE_CDROM;
- drive->cdrom.locked = 0;
- drive->sense.sense_key = SENSE_NONE;
- drive->sense.asc = 0;
- drive->sense.ascq = 0;
-
-#ifdef RAMDISK_DEBUG
- if (check_bit_fields(controller) == INTR_REASON_BIT_ERR) {
- Ramdisk_Print("interrupt reason: bit field error\n");
- return INTR_REASON_BIT_ERR;
- }
-#endif
-
- controller->sector_count = 0;
-
- // allocate low level driver
- drive->cdrom.cd = (struct cdrom_interface*)V3_Malloc(sizeof(struct cdrom_interface));
- Ramdisk_Print("cd = %x\n", drive->cdrom.cd);
- V3_ASSERT(drive->cdrom.cd != NULL);
-
- struct cdrom_interface * cdif = drive->cdrom.cd;
- memset(cdif, 0, sizeof(struct cdrom_interface));
- init_cdrom(cdif);
- cdif->ops.init(cdif);
-
- Ramdisk_Print("\t\tCD on ata%d-%d: '%s'\n",channel, device, "");
-
- if((drive->cdrom.cd->ops).insert_cdrom(cdif, NULL)) {
- Ramdisk_Print("\t\tMedia present in CD-ROM drive\n");
- drive->cdrom.ready = 1;
- drive->cdrom.capacity = drive->cdrom.cd->ops.capacity(cdif);
- } else {
- Ramdisk_Print("\t\tCould not locate CD-ROM, continuing with media not present\n");
- drive->cdrom.ready = 0;
- }
-
- }//if device = 0
- }//if channel = 0
- }//for device
- }//for channel
-
+static struct v3_dev_blk_ops blk_ops = {
+ .read = read,
+ .write = write,
+ .get_capacity = get_capacity,
+};
- 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 disk_free(struct vm_device * dev) {
+ return 0;
}
-
-////////////////////////////////////////////////////////////////////
-
-
-
-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;
- struct cdrom_interface *cdif = drive->cdrom.cd;
-
-
- 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);
+static struct v3_device_ops dev_ops = {
+ .free = disk_free,
+ .reset = NULL,
+ .start = NULL,
+ .stop = NULL,
+};
- 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;
+static int disk_init(struct guest_info * vm, v3_cfg_tree_t * cfg) {
+ struct disk_state * disk = NULL;
+ struct v3_cfg_file * file = NULL;
+ char * name = v3_cfg_val(cfg, "name");
+ char * filename = v3_cfg_val(cfg, "file");
-
- Ramdisk_Print("\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) {
- RD_PANIC("\t\tindex > 2048 : 0x%x\n",index);
- }
-
- switch (drive->atapi.command) {
- case 0x28: // read (10)
- case 0xa8: // read (12)
-
- if (!(drive->cdrom.ready)) {
- RD_PANIC("\t\tRead with CDROM not ready\n");
- }
-
- drive->cdrom.cd->ops.read_block(cdif, controller->buffer,
- drive->cdrom.next_lba);
- drive->cdrom.next_lba++;
- drive->cdrom.remaining_blocks--;
-
-
- if (!(drive->cdrom.remaining_blocks)) {
- Ramdisk_Print("\t\tLast READ block loaded {CDROM}\n");
- } else {
- Ramdisk_Print("\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;
- }
- }
-
+ v3_cfg_tree_t * frontend_cfg = v3_cfg_subtree(cfg, "frontend");
- /*
- 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;
- }
+ disk = (struct disk_state *)V3_Malloc(sizeof(struct disk_state));
+ memset(disk, 0, sizeof(struct disk_state));
- 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)
-
- Ramdisk_Print("\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
- Ramdisk_Print("\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;
+ if (!filename) {
+ PrintError("Missing filename (%s) for %s\n", filename, name);
+ return -1;
}
- default:
- Ramdisk_Print("\t\tread need support more command: %02x\n", controller->current_command);
- break;
- }
-
- return -1;
-}
-
-
-
+ file = v3_cfg_get_file(vm, filename);
-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);
-
- Ramdisk_Print("\t\twrite port 170\n");
-
- switch (controller->current_command) {
- case 0x30: // WRITE SECTORS
- RD_PANIC("\t\tneed to implement 0x30(write sector) to port 0x170\n");
- return -1;
-
- case 0xa0: // PACKET
-
- handle_atapi_packet_command(dev, channel, *(ushort_t *)src);
-
- return length;
-
- default:
- RD_PANIC("\t\tIO write(0x%x): current command is %02xh\n",
- port, controller->current_command);
-
- 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 (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);
-
-
- if (num_drives_on_channel(channel) == 0) {
- // (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 (!file) {
+ PrintError("Invalid ramdisk file: %s\n", filename);
+ return -1;
}
- }
-
- if ((port == SEC_CMD_PORT) || (port == PRI_CMD_PORT)) {
- rd_lower_irq(dev, channel->irq);
- }
-
- 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 Status port read length: %d (port=%d)\n", length, port);
- return -1;
- }
+ disk->disk_image = file->data;
+ disk->capacity = file->size;
+ PrintDebug("Registering RAMDISK at %p (size=%d)\n",
+ (void *)file->data, (uint32_t)file->size);
- 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);
+ struct vm_device * dev = v3_allocate_device(name, &dev_ops, disk);
-
- switch (value) {
- // 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 {
- rd_command_aborted(dev, channel, 0xa1);
- }
- break;
+ if (v3_attach_device(vm, dev) == -1) {
+ PrintError("Could not attach device %s\n", name);
+ return -1;
}
- 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;
-
-typedef struct {
- unsigned cylinders;
- unsigned heads;
- unsigned sectors;
-} device_image_t; // serv bit??
- controller->status.drq = 1;
- controller->status.err = 0;
-
- // NOTE: no interrupt here
- controller->current_command = value;
- controller->buffer_index = 0;
- } else {
- rd_command_aborted (dev, channel, 0xa0);
- }
- break;
+ if (v3_dev_connect_blk(vm, v3_cfg_val(frontend_cfg, "tag"),
+ &blk_ops, frontend_cfg, disk) == -1) {
+ PrintError("Could not connect %s to frontend %s\n",
+ name, v3_cfg_val(frontend_cfg, "tag"));
+ return -1;
}
- default:
- PrintError("\t\tneed translate command %2x\n", value);
- return -1;
-
- }
- return 0;
-}
-
-
-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);
-
-
- // (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;
-
- 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;
-
- Ramdisk_Print("\t\tadpater control reg: reset controller = %d\n",
- (unsigned) (controller->control.reset) ? 1 : 0);
- Ramdisk_Print("\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
- Ramdisk_Print("\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->irq);
-
- } 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", 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);
-
-
- Ramdisk_Print("[R_handler] IO read addr at %x, on drive %d/%d, curcmd = %02x\n",
- address, channel,
- drive_select,
- SELECTED_CONTROLLER(channel).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;
-
- *(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;
-
- *(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;
-
- *(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);
-
- *(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);
-
- *(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));
-
- *(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);
-
- Ramdisk_Print("[W_handler] IO write to %x = %02x, channel = %d\n",
- port, (unsigned) value, 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
- if ((value & 0xa0) != 0xa0) {
- Ramdisk_Print("\t\tIO write 0x%x (%02x): not 1x1xxxxxb\n", address, (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);
- drive->cdrom.cd->lba = (value >> 6) & 1;
-
-
- if (drive->device_type == IDE_NONE) {
- channel->drive_select = (value >> 4) & 0x01;
-#ifdef DEBUG_RAMDISK
- PrintDebug("\t\tError: device set to %d which does not exist! channel = 0x%x\n",
- channel->drive_select, channel);
-#endif
- controller->error_register = 0x04; // aborted
- controller->status.err = 1;
- }
-
- break;
- }
- default:
- PrintError("\t\thard drive: io write to address %x (value = %c)\n", port, value);
- return -1;
- }
-
- return length;
-}
-
-
-
-
-
-static void rd_raise_interrupt(struct vm_device * dev, struct channel_t * channel) {
- Bit32u irq;
- // struct ramdisk_t * ramdisk = (struct ramdisk_t *)(dev->private_data);
- struct drive_t * drive = get_selected_drive(channel);
- struct controller_t * controller = &(drive->controller);
-
- Ramdisk_Print("[raise_interrupt] disable_irq = %02x\n", controller->control.disable_irq);
-
- if (!(controller->control.disable_irq)) {
- irq = channel->irq;
-
- Ramdisk_Print("\t\tRaising interrupt %d {%s}\n\n", irq, SELECTED_TYPE_STRING(channel));
-
- dev->vm->vm_ops.raise_irq(dev->vm, irq);
- } else {
- Ramdisk_Print("\t\tirq is disabled\n");
- }
-
- return;
-}
-
-static void rd_lower_irq(struct vm_device *dev, Bit32u irq) // __attribute__(regparm(1))
-{
- Ramdisk_Print("[lower_irq] irq = %d\n", irq);
- dev->vm->vm_ops.lower_irq(dev->vm, 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 >= PACKET_SIZE\n");
- 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
- {
- if (drive->cdrom.ready) {
- rd_atapi_cmd_nop(dev, channel);
- } else {
- 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];
- rd_init_send_atapi_command(dev, channel, atapi_command, 18, alloc_length, false);
-
- // 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->ops.start_cdrom(drive->cdrom.cd);
-
- 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);
-
- if (drive->cdrom.ready) {
-
- drive->cdrom.cd->ops.eject_cdrom(drive->cdrom.cd);
-
- 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) {
- RD_PANIC("Zero allocation length to MECHANISM STATUS not impl.\n");
- }
-
- rd_init_send_atapi_command(dev, channel, atapi_command, 8, alloc_length, false);
-
- 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
- {
- rd_init_send_atapi_command(dev, channel, atapi_command, sizeof(struct error_recovery_t) + 8, alloc_length, false);
-
- 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
- {
- rd_init_send_atapi_command(dev, channel, atapi_command, 28, alloc_length, false);
- 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
- {
- RD_ERROR("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
- Ramdisk_Print("\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
- 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("cdrom: MODE SENSE (dflt), code=%x\n",
- PageCode);
- return -1;
-
- default:
- {
- // not implemeted by this device
- 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 0x3: // saved values not implemented
- {
- rd_atapi_cmd_error(dev, channel, SENSE_ILLEGAL_REQUEST, ASC_SAVING_PARAMETERS_NOT_SUPPORTED);
- rd_raise_interrupt(dev, channel);
- break;
- }
- default:
- {
- RD_PANIC("Should not get here!\n");
- break;
- }
- }
- break;
- }
- case 0x12: // inquiry
- {
- uint8_t alloc_length = controller->buffer[4];
-
- rd_init_send_atapi_command(dev, channel, atapi_command, 36, alloc_length, false);
-
- 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???
- rd_init_send_atapi_command(dev, channel, atapi_command, 8, 8, false);
-
- 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 {
- 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 {
- 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;
- 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;
- switch (format) {
- case 0:
-
- if (!(drive->cdrom.cd->ops.read_toc(drive->cdrom.cd, controller->buffer,
- &toc_length, msf, starting_track))) {
- rd_atapi_cmd_error(dev, channel, SENSE_ILLEGAL_REQUEST,
- ASC_INV_FIELD_IN_CMD_PACKET);
- rd_raise_interrupt(dev, channel);
- } else {
- rd_init_send_atapi_command(dev, channel, atapi_command, toc_length, alloc_length, false);
- rd_ready_to_send_atapi(dev, channel);
- }
- break;
-
- case 1:
- // multi session stuff. we ignore this and emulate a single session only
- rd_init_send_atapi_command(dev, channel, atapi_command, 12, alloc_length, false);
-
- 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 {
- 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)) {
- rd_atapi_cmd_error(dev, channel, SENSE_NOT_READY, ASC_MEDIUM_NOT_PRESENT);
- rd_raise_interrupt(dev, channel);
- break;
- }
-
- if (transfer_length == 0) {
- rd_atapi_cmd_nop(dev, channel);
- rd_raise_interrupt(dev, channel);
- Ramdisk_Print("\t\tREAD(%d) with transfer length 0, ok\n", atapi_command==0x28?10:12);
- break;
- }
-
- if (lba + transfer_length > drive->cdrom.capacity) {
- rd_atapi_cmd_error(dev, channel, SENSE_ILLEGAL_REQUEST, ASC_LOGICAL_BLOCK_OOR);
- rd_raise_interrupt(dev, channel);
- break;
- }
-
- Ramdisk_Print("\t\tcdrom: READ (%d) LBA=%d LEN=%d\n", atapi_command==0x28?10:12, lba, transfer_length);
-
- // handle command
- rd_init_send_atapi_command(dev, channel, atapi_command, transfer_length * 2048,
- transfer_length * 2048, true);
- 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)) {
- rd_atapi_cmd_error(dev, channel, SENSE_NOT_READY, ASC_MEDIUM_NOT_PRESENT);
- rd_raise_interrupt(dev, channel);
- break;
- }
-
- if (lba > drive->cdrom.capacity) {
- rd_atapi_cmd_error(dev, channel, SENSE_ILLEGAL_REQUEST, ASC_LOGICAL_BLOCK_OOR);
- rd_raise_interrupt(dev, channel);
- break;
- }
-
- PrintDebug("\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 {
- 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)) {
- 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);
- }
-
- rd_init_send_atapi_command(dev, channel, atapi_command, ret_len, alloc_length, false);
- rd_ready_to_send_atapi(dev, channel);
- }
- break;
- }
- case 0x51: // read disc info
- {
- // no-op to keep the Linux CD-ROM driver happy
- 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;
-}
-
-
-
-
-void 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.
-
- Ramdisk_Print("[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)) {
-
- Ramdisk_Print("\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) {
- RD_PANIC("\t\tATAPI command with zero byte count\n");
- }
-
- if (alloc_length < 0) {
- RD_PANIC("\t\tAllocation length < 0\n");
- }
-
- 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;
- // }
-}
-
-
-
- void rd_ready_to_send_atapi(struct vm_device * dev, struct channel_t * channel) {
- Ramdisk_Print("[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);
-
- Ramdisk_Print("[rd_atapi_cmd_error]\n");
- Ramdisk_Print("Error: atapi_cmd_error channel=%02x key=%02x asc=%02x\n", 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);
-
- Ramdisk_Print("[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);
-
- Ramdisk_Print("[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);
-
- Ramdisk_Print("[rd_command_aborted]\n");
- Ramdisk_Print("\t\taborting on command 0x%02x {%s}\n", value, SELECTED_TYPE_STRING(channel));
-
- 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_state = (struct ramdisk_t *)dev->private_data;
-
- rd_init_hardware(ramdisk_state);
-
-
- dev_hook_io(dev, PRI_CTRL_PORT,
- &read_status_port, &write_ctrl_port);
-
- dev_hook_io(dev, PRI_DATA_PORT,
- &read_data_port, &write_data_port);
- dev_hook_io(dev, PRI_FEATURES_PORT,
- &read_general_port, &write_general_port);
- dev_hook_io(dev, PRI_SECT_CNT_PORT,
- &read_general_port, &write_general_port);
- dev_hook_io(dev, PRI_SECT_ADDR1_PORT,
- &read_general_port, &write_general_port);
- dev_hook_io(dev, PRI_SECT_ADDR2_PORT,
- &read_general_port, &write_general_port);
- dev_hook_io(dev, PRI_SECT_ADDR3_PORT,
- &read_general_port, &write_general_port);
- dev_hook_io(dev, PRI_DRV_SEL_PORT,
- &read_general_port, &write_general_port);
- dev_hook_io(dev, PRI_CMD_PORT,
- &read_status_port, &write_cmd_port);
-
-
- dev_hook_io(dev, SEC_CTRL_PORT,
- &read_status_port, &write_ctrl_port);
-
- dev_hook_io(dev, SEC_DATA_PORT,
- &read_data_port, &write_data_port);
- dev_hook_io(dev, SEC_FEATURES_PORT,
- &read_general_port, &write_general_port);
- dev_hook_io(dev, SEC_SECT_CNT_PORT,
- &read_general_port, &write_general_port);
- dev_hook_io(dev, SEC_SECT_ADDR1_PORT,
- &read_general_port, &write_general_port);
- dev_hook_io(dev, SEC_SECT_ADDR2_PORT,
- &read_general_port, &write_general_port);
- dev_hook_io(dev, SEC_SECT_ADDR3_PORT,
- &read_general_port, &write_general_port);
- dev_hook_io(dev, SEC_DRV_SEL_PORT,
- &read_general_port, &write_general_port);
- dev_hook_io(dev, SEC_CMD_PORT,
- &read_status_port, &write_cmd_port);
-
-
-
- dev_hook_io(dev, SEC_ADDR_REG_PORT,
- &read_general_port, &write_general_port);
-
- 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_state = (struct ramdisk_t *)(dev->private_data);
- rd_close_harddrive(ramdisk_state);
- 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 *create_ramdisk()
-{
-
- struct ramdisk_t *ramdisk;
- ramdisk = (struct ramdisk_t *)V3_Malloc(sizeof(struct ramdisk_t));
- V3_ASSERT(ramdisk != NULL);
-
- Ramdisk_Print("[create_ramdisk]\n");
-
- struct vm_device *device = create_device("RAMDISK", &dev_ops, ramdisk);
-
- return device;
-}
-
-
-
-
-#ifdef RAMDISK_DEBUG
-static void rd_print_state(struct ramdisk_t * ramdisk, struct vm_device *dev) {
- 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));
- }
-
- Ramdisk_Print("sizeof(*channels) = %d\n", sizeof(*channels));
- Ramdisk_Print("sizeof(channles->drives[0].controller) = %d\n", sizeof((channels->drives[0].controller)));
- Ramdisk_Print("sizeof(channles->drives[0].cdrom) = %d\n", sizeof((channels->drives[0].cdrom)));
- Ramdisk_Print("sizeof(channles->drives[0].sense) = %d\n", sizeof((channels->drives[0].sense)));
- Ramdisk_Print("sizeof(channles->drives[0].atapi) = %d\n", sizeof((channels->drives[0].atapi)));
-
-
- Ramdisk_Print("sizeof(channles->drives[0].controller.status) = %d\n",
- sizeof((channels->drives[0].controller.status)));
- Ramdisk_Print("sizeof(channles->drives[0].controller.sector_count) = %d\n",
- sizeof((channels->drives[0].controller.sector_count)));
- Ramdisk_Print("sizeof(channles->drives[0].controller.interrupt_reason) = %d\n",
- sizeof((channels->drives[0].controller.interrupt_reason)));
-
- Ramdisk_Print("sizeof(channles->drives[0].controller.cylinder_no) = %d\n",
- sizeof((channels->drives[0].controller.cylinder_no)));
- Ramdisk_Print("sizeof(channles->drives[0].controller.byte_count) = %d\n",
- sizeof((channels->drives[0].controller.byte_count)));
-
-
- Ramdisk_Print("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
- Ramdisk_Print("channels[%d].drives[%d].controller.status.busy = %d\n",
- channel, device,
- channels[channel].drives[device].controller.status.busy);
- Ramdisk_Print("channels[%d].drives[%d].controller.status.drive_ready = %d\n",
- channel, device,
- channels[channel].drives[device].controller.status.drive_ready);
- Ramdisk_Print("channels[%d].drives[%d].controller.status.write_fault = %d\n",
- channel, device,
- channels[channel].drives[device].controller.status.write_fault);
- Ramdisk_Print("channels[%d].drives[%d].controller.status.seek_complete = %d\n",
- channel, device,
- channels[channel].drives[device].controller.status.seek_complete);
- Ramdisk_Print("channels[%d].drives[%d].controller.status.drq = %d\n",
- channel, device,
- channels[channel].drives[device].controller.status.drq);
- Ramdisk_Print("channels[%d].drives[%d].controller.status.corrected_data = %d\n",
- channel, device,
- channels[channel].drives[device].controller.status.corrected_data);
- Ramdisk_Print("channels[%d].drives[%d].controller.status.index_pulse = %d\n",
- channel, device,
- channels[channel].drives[device].controller.status.index_pulse);
- Ramdisk_Print("channels[%d].drives[%d].controller.status.index_pulse_count = %d\n",
- channel, device,
- channels[channel].drives[device].controller.status.index_pulse_count);
- Ramdisk_Print("channels[%d].drives[%d].controller.status.err = %d\n",
- channel, device,
- channels[channel].drives[device].controller.status.err);
-
-
- Ramdisk_Print("channels[%d].drives[%d].controller.error_register = %d\n",
- channel, device,
- channels[channel].drives[device].controller.error_register);
- Ramdisk_Print("channels[%d].drives[%d].controller.head_no = %d\n",
- channel, device,
- channels[channel].drives[device].controller.head_no);
- Ramdisk_Print("channels[%d].drives[%d].controller.sector_count = %d\n",
- channel, device,
- channels[channel].drives[device].controller.sector_count);
- Ramdisk_Print("channels[%d].drives[%d].controller.sector_no = %d\n",
- channel, device,
- channels[channel].drives[device].controller.sector_no);
- Ramdisk_Print("channels[%d].drives[%d].controller.cylinder_no = %d\n",
- channel, device,
- channels[channel].drives[device].controller.cylinder_no);
- Ramdisk_Print("channels[%d].drives[%d].controller.current_command = %02x\n",
- channel, device,
- channels[channel].drives[device].controller.current_command);
- Ramdisk_Print("channels[%d].drives[%d].controller.buffer_index = %d\n",
- channel, device,
- channels[channel].drives[device].controller.buffer_index);
-
-
- Ramdisk_Print("channels[%d].drives[%d].controller.control.reset = %d\n",
- channel, device,
- channels[channel].drives[device].controller.control.reset);
- Ramdisk_Print("channels[%d].drives[%d].controller.control.disable_irq = %d\n",
- channel, device,
- channels[channel].drives[device].controller.control.disable_irq);
-
-
- Ramdisk_Print("channels[%d].drives[%d].controller.reset_in_progress = %d\n",
- channel, device,
- channels[channel].drives[device].controller.reset_in_progress);
- Ramdisk_Print("channels[%d].drives[%d].controller.sectors_per_block = %02x\n",
- channel, device,
- channels[channel].drives[device].controller.sectors_per_block);
- Ramdisk_Print("channels[%d].drives[%d].controller.lba_mode = %d\n",
- channel, device,
- channels[channel].drives[device].controller.lba_mode);
- Ramdisk_Print("channels[%d].drives[%d].controller.features = %d\n",
- channel, device,
- channels[channel].drives[device].controller.features);
-
-
- Ramdisk_Print("channels[%d].drives[%d].model_no = %s\n",
- channel, device,
- channels[channel].drives[device].model_no);
- Ramdisk_Print("channels[%d].drives[%d].device_type = %d\n",
- channel, device,
- channels[channel].drives[device].device_type);
- Ramdisk_Print("channels[%d].drives[%d].cdrom.locked = %d\n",
- channel, device,
- channels[channel].drives[device].cdrom.locked);
- Ramdisk_Print("channels[%d].drives[%d].sense.sense_key = %d\n",
- channel, device,
- channels[channel].drives[device].sense.sense_key);
- Ramdisk_Print("channels[%d].drives[%d].sense.asc = %d\n",
- channel, device,
- channels[channel].drives[device].sense.asc);
- Ramdisk_Print("channels[%d].drives[%d].sense.ascq = %d\n",
- channel, device,
- channels[channel].drives[device].sense.ascq);
-
-
-
- Ramdisk_Print("channels[%d].drives[%d].controller.interrupt_reason.c_d = %02x\n",
- channel, device,
- channels[channel].drives[device].controller.interrupt_reason.c_d);
-
- Ramdisk_Print("channels[%d].drives[%d].controller.interrupt_reason.i_o = %02x\n",
- channel, device,
- channels[channel].drives[device].controller.interrupt_reason.i_o);
-
- Ramdisk_Print("channels[%d].drives[%d].controller.interrupt_reason.rel = %02x\n",
- channel, device,
- channels[channel].drives[device].controller.interrupt_reason.rel);
-
- Ramdisk_Print("channels[%d].drives[%d].controller.interrupt_reason.tag = %02x\n",
- channel, device,
- channels[channel].drives[device].controller.interrupt_reason.tag);
-
- Ramdisk_Print("channels[%d].drives[%d].cdrom.ready = %d\n",
- channel, device,
- channels[channel].drives[device].cdrom.ready);
-
- } //for device
- } //for channel
-
- return;
-}
-
-
-
-static void trace_info(ushort_t port, void *src, uint_t length) {
-
- switch(port){
-
- case 0x3e8:
- if (length == 1 && *((uchar_t*) src) == ATA_DETECT)
- Ramdisk_Print("ata_detect()\n");
- break;
-
- case 0x3e9:
- if (length == 1 && *((uchar_t*) src) == ATA_RESET)
- Ramdisk_Print("ata_reset()\n");
- break;
-
- case 0x3ea:
- if (length == 1 && *((uchar_t*) src) == ATA_CMD_DATA_IN)
- Ramdisk_Print("ata_cmd_data_in()\n");
- break;
-
- case 0x3eb:
- if (length == 1 && *((uchar_t*) src) == ATA_CMD_DATA_OUT)
- Ramdisk_Print("ata_cmd_data_out()\n");
- break;
-
- case 0x3ec:
- if (length == 1 && *((uchar_t*) src) == ATA_CMD_PACKET)
- Ramdisk_Print("ata_cmd_packet()\n");
- break;
-
- case 0x3ed:
- if (length == 1 && *((uchar_t*) src) == ATAPI_GET_SENSE)
- Ramdisk_Print("atapi_get_sense()\n");
- break;
-
- case 0x3ee:
- if (length == 1 && *((uchar_t*) src) == ATAPI_IS_READY)
- Ramdisk_Print("atapi_is_ready()\n");
- break;
-
- case 0x3ef:
- if (length == 1 && *((uchar_t*) src) == ATAPI_IS_CDROM)
- Ramdisk_Print("atapi_is_cdrom()\n");
- break;
-
-
- case 0x2e8:
- if (length == 1 && *((uchar_t*) src) == CDEMU_INIT)
- Ramdisk_Print("cdemu_init()\n");
- break;
-
- case 0x2e9:
- if (length == 1 && *((uchar_t*) src) == CDEMU_ISACTIVE)
- Ramdisk_Print("cdemu_isactive()\n");
- break;
-
- case 0x2ea:
- if (length == 1 && *((uchar_t*) src) == CDEMU_EMULATED_DRIVE)
- Ramdisk_Print("cdemu_emulated_drive()\n");
- break;
-
- case 0x2eb:
- if (length == 1 && *((uchar_t*) src) == CDROM_BOOT)
- Ramdisk_Print("cdrom_boot()\n");
- break;
-
- case 0x2ec:
- if (length == 1 && *((uchar_t*) src) == HARD_DRIVE_POST)
- Ramdisk_Print("ata_hard_drive_post()\n");
- break;
-
- case 0x2ed:
- if (length == 1)
- Ramdisk_Print("ata_device_no(%d)\n", *((uchar_t*) src));
- break;
-
- case 0x2ee:
- if (length == 1)
- Ramdisk_Print("ata_device_type(%d)\n", *((uchar_t*) src));
- break;
-
- case 0x2ef:
- if (length == 1 && *((uchar_t*) src) == INT13_HARDDISK)
- Ramdisk_Print("int13_harddrive()\n");
- break;
-
- case 0x2f8:
- if (length == 1 && *((uchar_t*) src) == INT13_CDROM)
- Ramdisk_Print("int13_cdrom()\n");
- break;
-
- case 0x2f9:
- if (length == 1 && *((uchar_t*) src) == INT13_CDEMU)
- Ramdisk_Print("int13_cdemu()\n");
- break;
-
- case 0x2fa:
- if (length == 1 && *((uchar_t*) src) == INT13_ELTORITO)
- Ramdisk_Print("int13_eltorito()\n");
- break;
-
- case 0x2fb:
- if (length == 1 && *((uchar_t*) src) == INT13_DISKETTE_FUNCTION)
- Ramdisk_Print("int13_diskette_function()\n");
- break;
-
-
- default:
- break;
- }
+ return 0;
}
-
-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
+device_register("RAMDISK", disk_init)
