*/
#include <palacios/vmm.h>
+#include <palacios/vmm_dev_mgr.h>
#include <palacios/vm_guest_mem.h>
#include <devices/ide.h>
#include <devices/pci.h>
+#include <devices/southbridge.h>
#include "ide-types.h"
#include "atapi-types.h"
+#ifndef CONFIG_DEBUG_IDE
+#undef PrintDebug
+#define PrintDebug(fmt, args...)
+#endif
+
#define PRI_DEFAULT_IRQ 14
#define SEC_DEFAULT_IRQ 15
#define PRI_DEFAULT_DMA_PORT 0xc000
#define SEC_DEFAULT_DMA_PORT 0xc008
-
#define DATA_BUFFER_SIZE 2048
+#define ATAPI_BLOCK_SIZE 2048
+#define HD_SECTOR_SIZE 512
+
+
static const char * ide_pri_port_strs[] = {"PRI_DATA", "PRI_FEATURES", "PRI_SECT_CNT", "PRI_SECT_NUM",
"PRI_CYL_LOW", "PRI_CYL_HIGH", "PRI_DRV_SEL", "PRI_CMD",
"PRI_CTRL", "PRI_ADDR_REG"};
"DMA_PRD0", "DMA_PRD1", "DMA_PRD2", "DMA_PRD3"};
+typedef enum {BLOCK_NONE, BLOCK_DISK, BLOCK_CDROM} v3_block_type_t;
static inline const char * io_port_to_str(uint16_t port) {
if ((port >= PRI_DATA_PORT) && (port <= PRI_CMD_PORT)) {
}
-static const char * ide_dev_type_strs[] = {"HARDDISK", "CDROM", "NONE"};
-
-
-static inline const char * device_type_to_str(v3_ide_dev_type_t type) {
- if (type > 2) {
- return NULL;
- }
-
- return ide_dev_type_strs[type];
-}
-
-
struct ide_cd_state {
struct atapi_sense_data sense;
- uint_t current_lba;
+
uint8_t atapi_cmd;
struct atapi_error_recovery err_recovery;
};
struct ide_hd_state {
+ int accessed;
+
+ /* this is the multiple sector transfer size as configured for read/write multiple sectors*/
+ uint_t mult_sector_num;
+ /* This is the current op sector size:
+ * for multiple sector ops this equals mult_sector_num
+ * for standard ops this equals 1
+ */
+ uint_t cur_sector_num;
};
struct ide_drive {
// Command Registers
- v3_ide_dev_type_t drive_type;
-
- union {
- struct v3_ide_cd_ops * cd_ops;
- struct v3_ide_hd_ops * hd_ops;
- };
+ v3_block_type_t drive_type;
+ struct v3_dev_blk_ops * ops;
union {
struct ide_cd_state cd_state;
// calculated for easy access
uint_t transfer_length;
+ uint64_t current_lba;
// We have a local data buffer that we use for IO port accesses
uint8_t data_buf[DATA_BUFFER_SIZE];
+ uint32_t num_cylinders;
+ uint32_t num_heads;
+ uint32_t num_sectors;
+
void * private_data;
union {
union {
uint8_t sector_num; // 0x1f3,0x173
uint8_t lba0;
- };
+ } __attribute__((packed));
union {
uint16_t cylinder;
uint16_t lba12;
-
-
+
struct {
uint8_t cylinder_low; // 0x1f4,0x174
uint8_t cylinder_high; // 0x1f5,0x175
} __attribute__((packed));
-
+
struct {
uint8_t lba1;
uint8_t lba2;
} __attribute__((packed));
-
-
+
+
// The transfer length requested by the CPU
uint16_t req_len;
} __attribute__((packed));
int irq; // this is temporary until we add PCI support
- struct pci_device * pci_dev;
-
// Control Registers
struct ide_ctrl_reg ctrl_reg; // [write] 0x3f6,0x376
struct ide_internal {
struct ide_channel channels[2];
- struct vm_device * pci;
- struct pci_device * busmaster_pci;
+
+ struct v3_southbridge * southbridge;
+ struct vm_device * pci_bus;
+
+ struct pci_device * ide_pci;
};
+
+
+/* Utility functions */
+
static inline uint16_t be_to_le_16(const uint16_t val) {
uint8_t * buf = (uint8_t *)&val;
return (buf[0] << 8) | (buf[1]) ;
}
+/* Drive Commands */
static void ide_raise_irq(struct vm_device * dev, struct ide_channel * channel) {
if (channel->ctrl_reg.irq_disable == 0) {
- PrintDebug("Raising IDE Interrupt %d\n", channel->irq);
- channel->dma_status.int_gen = 1;
- v3_raise_irq(dev->vm, channel->irq);
+ // PrintError("Raising IDE Interrupt %d\n", channel->irq);
+ channel->dma_status.int_gen = 1;
+ v3_raise_irq(dev->vm, channel->irq);
}
}
static void drive_reset(struct ide_drive * drive) {
drive->sector_count = 0x01;
drive->sector_num = 0x01;
+
+ PrintDebug("Resetting drive %s\n", drive->model);
- if (drive->drive_type == IDE_CDROM) {
+ if (drive->drive_type == BLOCK_CDROM) {
drive->cylinder = 0xeb14;
} else {
drive->cylinder = 0x0000;
+ //drive->hd_state.accessed = 0;
}
}
-// Include the ATAPI interface handlers
+static int dma_read(struct vm_device * dev, struct ide_channel * channel);
+static int dma_write(struct vm_device * dev, struct ide_channel * channel);
+
+
+/* ATAPI functions */
#include "atapi.h"
+/* ATA functions */
+#include "ata.h"
+
+
+#ifdef CONFIG_DEBUG_IDE
+static void print_prd_table(struct vm_device * dev, struct ide_channel * channel) {
+ struct ide_dma_prd prd_entry;
+ int index = 0;
+
+ PrintDebug("Dumping PRD table\n");
+
+ while (1) {
+ uint32_t prd_entry_addr = channel->dma_prd_addr + (sizeof(struct ide_dma_prd) * index);
+ int ret;
+
+ ret = read_guest_pa_memory(dev->vm, prd_entry_addr, sizeof(struct ide_dma_prd), (void *)&prd_entry);
+
+ if (ret != sizeof(struct ide_dma_prd)) {
+ PrintError("Could not read PRD\n");
+ return;
+ }
+
+ PrintDebug("\tPRD Addr: %x, PRD Len: %d, EOT: %d\n",
+ prd_entry.base_addr, prd_entry.size, prd_entry.end_of_table);
+ if (prd_entry.end_of_table) {
+ break;
+ }
+
+ index++;
+ }
+
+ return;
+}
+#endif
+/* IO Operations */
static int dma_read(struct vm_device * dev, struct ide_channel * channel) {
struct ide_drive * drive = get_selected_drive(channel);
+ // This is at top level scope to do the EOT test at the end
struct ide_dma_prd prd_entry;
- uint32_t prd_entry_addr = channel->dma_prd_addr + (sizeof(struct ide_dma_prd) * channel->dma_tbl_index);
- int ret;
+ uint_t bytes_left = drive->transfer_length;
+ // Read in the data buffer....
+ // Read a sector/block at a time until the prd entry is full.
- PrintDebug("PRD table address = %x\n", channel->dma_prd_addr);
+#ifdef CONFIG_DEBUG_IDE
+ print_prd_table(dev, channel);
+#endif
- ret = read_guest_pa_memory(dev->vm, prd_entry_addr, sizeof(struct ide_dma_prd), (void *)&prd_entry);
+ PrintDebug("DMA read for %d bytes\n", bytes_left);
- if (ret != sizeof(struct ide_dma_prd)) {
- PrintError("Could not read PRD\n");
- return -1;
- }
+ // Loop through the disk data
+ while (bytes_left > 0) {
+ uint32_t prd_entry_addr = channel->dma_prd_addr + (sizeof(struct ide_dma_prd) * channel->dma_tbl_index);
+ uint_t prd_bytes_left = 0;
+ uint_t prd_offset = 0;
+ int ret;
- PrintDebug("PRD Addr: %x, PDR Len: %d, EOT: %d\n", prd_entry.base_addr, prd_entry.size, prd_entry.end_of_table);
+ PrintDebug("PRD table address = %x\n", channel->dma_prd_addr);
- ret = write_guest_pa_memory(dev->vm, prd_entry.base_addr, prd_entry.size, drive->data_buf);
+ ret = read_guest_pa_memory(dev->vm, prd_entry_addr, sizeof(struct ide_dma_prd), (void *)&prd_entry);
- if (ret != prd_entry.size) {
- PrintError("Failed to copy data into guest memory... (ret=%d)\n", ret);
- return -1;
- }
+ if (ret != sizeof(struct ide_dma_prd)) {
+ PrintError("Could not read PRD\n");
+ return -1;
+ }
- channel->status.busy = 0;
- channel->status.ready = 1;
- channel->status.data_req = 0;
- channel->status.error = 0;
- channel->status.seek_complete = 1;
+ PrintDebug("PRD Addr: %x, PRD Len: %d, EOT: %d\n",
+ prd_entry.base_addr, prd_entry.size, prd_entry.end_of_table);
+
+ // loop through the PRD data....
+
+ prd_bytes_left = prd_entry.size;
+
+
+ while (prd_bytes_left > 0) {
+ uint_t bytes_to_write = 0;
+
+ if (drive->drive_type == BLOCK_DISK) {
+ bytes_to_write = (prd_bytes_left > HD_SECTOR_SIZE) ? HD_SECTOR_SIZE : prd_bytes_left;
+
+
+ if (ata_read(dev, channel, drive->data_buf, 1) == -1) {
+ PrintError("Failed to read next disk sector\n");
+ return -1;
+ }
+ } else if (drive->drive_type == BLOCK_CDROM) {
+ if (atapi_cmd_is_data_op(drive->cd_state.atapi_cmd)) {
+ bytes_to_write = (prd_bytes_left > ATAPI_BLOCK_SIZE) ? ATAPI_BLOCK_SIZE : prd_bytes_left;
+
+ if (atapi_read_chunk(dev, channel) == -1) {
+ PrintError("Failed to read next disk sector\n");
+ return -1;
+ }
+ } else {
+ PrintDebug("DMA of command packet\n");
+ PrintError("How does this work???\n");
+ return -1;
+ bytes_to_write = (prd_bytes_left > bytes_left) ? bytes_left : prd_bytes_left;
+ prd_bytes_left = bytes_to_write;
+ }
+ }
+
+ PrintDebug("Writing DMA data to guest Memory ptr=%p, len=%d\n",
+ (void *)(addr_t)(prd_entry.base_addr + prd_offset), bytes_to_write);
+
+ drive->current_lba++;
+
+ ret = write_guest_pa_memory(dev->vm, prd_entry.base_addr + prd_offset, bytes_to_write, drive->data_buf);
+
+ if (ret != bytes_to_write) {
+ PrintError("Failed to copy data into guest memory... (ret=%d)\n", ret);
+ return -1;
+ }
+
+ PrintDebug("\t DMA ret=%d, (prd_bytes_left=%d) (bytes_left=%d)\n", ret, prd_bytes_left, bytes_left);
+
+ drive->transfer_index += ret;
+ prd_bytes_left -= ret;
+ prd_offset += ret;
+ bytes_left -= ret;
+ }
+
+ channel->dma_tbl_index++;
+
+ if (drive->drive_type == BLOCK_DISK) {
+ if (drive->transfer_index % HD_SECTOR_SIZE) {
+ PrintError("We currently don't handle sectors that span PRD descriptors\n");
+ return -1;
+ }
+ } else if (drive->drive_type == BLOCK_CDROM) {
+ if (atapi_cmd_is_data_op(drive->cd_state.atapi_cmd)) {
+ if (drive->transfer_index % ATAPI_BLOCK_SIZE) {
+ PrintError("We currently don't handle ATAPI BLOCKS that span PRD descriptors\n");
+ PrintError("transfer_index=%d, transfer_length=%d\n",
+ drive->transfer_index, drive->transfer_length);
+ return -1;
+ }
+ }
+ }
+
+
+ if ((prd_entry.end_of_table == 1) && (bytes_left > 0)) {
+ PrintError("DMA table not large enough for data transfer...\n");
+ return -1;
+ }
+ }
/*
drive->irq_flags.io_dir = 1;
*/
+ // Update to the next PRD entry
+
// set DMA status
- channel->dma_status.active = 0;
- channel->dma_status.err = 1;
- channel->dma_status.int_gen = 1;
+
+ if (prd_entry.end_of_table) {
+ channel->status.busy = 0;
+ channel->status.ready = 1;
+ channel->status.data_req = 0;
+ channel->status.error = 0;
+ channel->status.seek_complete = 1;
+
+ channel->dma_status.active = 0;
+ channel->dma_status.err = 0;
+ }
ide_raise_irq(dev, channel);
static int dma_write(struct vm_device * dev, struct ide_channel * channel) {
- // unsupported
- PrintError("DMA writes currently not supported\n");
- return -1;
-}
+ struct ide_drive * drive = get_selected_drive(channel);
+ // This is at top level scope to do the EOT test at the end
+ struct ide_dma_prd prd_entry;
+ uint_t bytes_left = drive->transfer_length;
-/*
- * This is an ugly ugly ugly way to differentiate between the first and second DMA channels
- */
+ PrintDebug("DMA write from %d bytes\n", bytes_left);
-static int write_dma_port(ushort_t port_offset, void * src, uint_t length, struct vm_device * dev, struct ide_channel * channel);
-static int read_dma_port(ushort_t port_offset, void * dst, uint_t length, struct vm_device * dev, struct ide_channel * channel);
+ // Loop through disk data
+ while (bytes_left > 0) {
+ uint32_t prd_entry_addr = channel->dma_prd_addr + (sizeof(struct ide_dma_prd) * channel->dma_tbl_index);
+ uint_t prd_bytes_left = 0;
+ uint_t prd_offset = 0;
+ int ret;
+
+ PrintDebug("PRD Table address = %x\n", channel->dma_prd_addr);
+ ret = read_guest_pa_memory(dev->vm, prd_entry_addr, sizeof(struct ide_dma_prd), (void *)&prd_entry);
-static int write_pri_dma_port(ushort_t port, void * src, uint_t length, struct vm_device * dev) {
- struct ide_internal * ide = (struct ide_internal *)(dev->private_data);
- PrintDebug("IDE: Writing PRI DMA Port %x (%s) (val=%x)\n", port, dma_port_to_str(port & 0x7), *(uint32_t *)src);
- return write_dma_port(port & 0x7, src, length, dev, &(ide->channels[0]));
-}
+ if (ret != sizeof(struct ide_dma_prd)) {
+ PrintError("Could not read PRD\n");
+ return -1;
+ }
-static int write_sec_dma_port(ushort_t port, void * src, uint_t length, struct vm_device * dev) {
- struct ide_internal * ide = (struct ide_internal *)(dev->private_data);
- PrintDebug("IDE: Writing SEC DMA Port %x (%s) (val=%x)\n", port, dma_port_to_str(port & 0x7), *(uint32_t *)src);
- return write_dma_port(port & 0x7, src, length, dev, &(ide->channels[1]));
-}
+ PrintDebug("PRD Addr: %x, PRD Len: %d, EOT: %d\n",
+ prd_entry.base_addr, prd_entry.size, prd_entry.end_of_table);
+ prd_bytes_left = prd_entry.size;
-static int read_pri_dma_port(ushort_t port, void * dst, uint_t length, struct vm_device * dev) {
- struct ide_internal * ide = (struct ide_internal *)(dev->private_data);
- PrintDebug("IDE: Reading PRI DMA Port %x (%s)\n", port, dma_port_to_str(port & 0x7));
- return read_dma_port(port & 0x7, dst, length, dev, &(ide->channels[0]));
-}
+ while (prd_bytes_left > 0) {
+ uint_t bytes_to_write = 0;
-static int read_sec_dma_port(ushort_t port, void * dst, uint_t length, struct vm_device * dev) {
- struct ide_internal * ide = (struct ide_internal *)(dev->private_data);
- PrintDebug("IDE: Reading SEC DMA Port %x (%s)\n", port, dma_port_to_str(port & 0x7));
- return read_dma_port(port & 0x7, dst, length, dev, &(ide->channels[1]));
+
+ bytes_to_write = (prd_bytes_left > HD_SECTOR_SIZE) ? HD_SECTOR_SIZE : prd_bytes_left;
+
+
+ ret = read_guest_pa_memory(dev->vm, prd_entry.base_addr + prd_offset, bytes_to_write, drive->data_buf);
+
+ if (ret != bytes_to_write) {
+ PrintError("Faild to copy data from guest memory... (ret=%d)\n", ret);
+ return -1;
+ }
+
+ PrintDebug("\t DMA ret=%d (prd_bytes_left=%d) (bytes_left=%d)\n", ret, prd_bytes_left, bytes_left);
+
+
+ if (ata_write(dev, channel, drive->data_buf, 1) == -1) {
+ PrintError("Failed to write data to disk\n");
+ return -1;
+ }
+
+ drive->current_lba++;
+
+ drive->transfer_index += ret;
+ prd_bytes_left -= ret;
+ prd_offset += ret;
+ bytes_left -= ret;
+ }
+
+ channel->dma_tbl_index++;
+
+ if (drive->transfer_index % HD_SECTOR_SIZE) {
+ PrintError("We currently don't handle sectors that span PRD descriptors\n");
+ return -1;
+ }
+
+ if ((prd_entry.end_of_table == 1) && (bytes_left > 0)) {
+ PrintError("DMA table not large enough for data transfer...\n");
+ return -1;
+ }
+ }
+
+ if (prd_entry.end_of_table) {
+ channel->status.busy = 0;
+ channel->status.ready = 1;
+ channel->status.data_req = 0;
+ channel->status.error = 0;
+ channel->status.seek_complete = 1;
+
+ channel->dma_status.active = 0;
+ channel->dma_status.err = 0;
+ }
+
+ ide_raise_irq(dev, channel);
+
+ return 0;
}
+
#define DMA_CMD_PORT 0x00
#define DMA_STATUS_PORT 0x02
#define DMA_PRD_PORT0 0x04
#define DMA_PRD_PORT2 0x06
#define DMA_PRD_PORT3 0x07
+#define DMA_CHANNEL_FLAG 0x08
+
+static int write_dma_port(ushort_t port, void * src, uint_t length, void * private_data) {
+ struct vm_device * dev = (struct vm_device *)private_data;
+ struct ide_internal * ide = (struct ide_internal *)(dev->private_data);
+ uint16_t port_offset = port & (DMA_CHANNEL_FLAG - 1);
+ uint_t channel_flag = (port & DMA_CHANNEL_FLAG) >> 3;
+ struct ide_channel * channel = &(ide->channels[channel_flag]);
-static int write_dma_port(ushort_t port_offset, void * src, uint_t length,
- struct vm_device * dev, struct ide_channel * channel) {
+ PrintDebug("IDE: Writing DMA Port %x (%s) (val=%x) (len=%d) (channel=%d)\n",
+ port, dma_port_to_str(port_offset), *(uint32_t *)src, length, channel_flag);
switch (port_offset) {
case DMA_CMD_PORT:
return -1;
}
}
+
+ channel->dma_cmd.val &= 0x09;
}
break;
- case DMA_STATUS_PORT:
+ case DMA_STATUS_PORT: {
+ uint8_t val = *(uint8_t *)src;
+
if (length != 1) {
PrintError("Invalid read length for DMA status port\n");
return -1;
}
- channel->dma_status.val = *(uint8_t *)src;
+ // weirdness
+ channel->dma_status.val = ((val & 0x60) |
+ (channel->dma_status.val & 0x01) |
+ (channel->dma_status.val & ~val & 0x06));
+
break;
-
+ }
case DMA_PRD_PORT0:
case DMA_PRD_PORT1:
case DMA_PRD_PORT2:
}
-static int read_dma_port(ushort_t port_offset, void * dst, uint_t length,
- struct vm_device * dev, struct ide_channel * channel) {
+static int read_dma_port(ushort_t port, void * dst, uint_t length, void * private_data) {
+ struct vm_device * dev = (struct vm_device *)private_data;
+ struct ide_internal * ide = (struct ide_internal *)(dev->private_data);
+ uint16_t port_offset = port & (DMA_CHANNEL_FLAG - 1);
+ uint_t channel_flag = (port & DMA_CHANNEL_FLAG) >> 3;
+ struct ide_channel * channel = &(ide->channels[channel_flag]);
+
+ PrintDebug("Reading DMA port %d (%x) (channel=%d)\n", port, port, channel_flag);
switch (port_offset) {
case DMA_CMD_PORT:
return -1;
}
- PrintDebug("\tval=%x\n", *(uint32_t *)dst);
+ PrintDebug("\tval=%x (len=%d)\n", *(uint32_t *)dst, length);
return length;
}
channel->cmd_reg = *(uint8_t *)src;
switch (channel->cmd_reg) {
-
+
+ case 0xa1: // ATAPI Identify Device Packet
+ if (drive->drive_type != BLOCK_CDROM) {
+ drive_reset(drive);
+
+ // JRL: Should we abort here?
+ ide_abort_command(dev, channel);
+ } else {
+
+ atapi_identify_device(drive);
+
+ channel->error_reg.val = 0;
+ channel->status.val = 0x58; // ready, data_req, seek_complete
+
+ ide_raise_irq(dev, channel);
+ }
+ break;
+ case 0xec: // Identify Device
+ if (drive->drive_type != BLOCK_DISK) {
+ drive_reset(drive);
+
+ // JRL: Should we abort here?
+ ide_abort_command(dev, channel);
+ } else {
+ ata_identify_device(drive);
+
+ channel->error_reg.val = 0;
+ channel->status.val = 0x58;
+
+ ide_raise_irq(dev, channel);
+ }
+ break;
+
case 0xa0: // ATAPI Command Packet
- if (drive->drive_type != IDE_CDROM) {
+ if (drive->drive_type != BLOCK_CDROM) {
ide_abort_command(dev, channel);
}
drive->transfer_index = 0;
break;
- case 0xa1: // ATAPI Identify Device Packet
- atapi_identify_device(drive);
- channel->error_reg.val = 0;
- channel->status.val = 0x58; // ready, data_req, seek_complete
+ case 0x20: // Read Sectors with Retry
+ case 0x21: // Read Sectors without Retry
+ drive->hd_state.cur_sector_num = 1;
+
+ if (ata_read_sectors(dev, channel) == -1) {
+ PrintError("Error reading sectors\n");
+ return -1;
+ }
+ break;
+
+ case 0x24: // Read Sectors Extended
+ drive->hd_state.cur_sector_num = 1;
+
+ if (ata_read_sectors_ext(dev, channel) == -1) {
+ PrintError("Error reading extended sectors\n");
+ return -1;
+ }
+ break;
+
+ case 0xc8: // Read DMA with retry
+ case 0xc9: { // Read DMA
+ uint32_t sect_cnt = (drive->sector_count == 0) ? 256 : drive->sector_count;
+
+ if (ata_get_lba(dev, channel, &(drive->current_lba)) == -1) {
+ ide_abort_command(dev, channel);
+ return 0;
+ }
- ide_raise_irq(dev, channel);
+ drive->hd_state.cur_sector_num = 1;
+
+ drive->transfer_length = sect_cnt * HD_SECTOR_SIZE;
+ drive->transfer_index = 0;
+
+ if (channel->dma_status.active == 1) {
+ // DMA Read
+ if (dma_read(dev, channel) == -1) {
+ PrintError("Failed DMA Read\n");
+ return -1;
+ }
+ }
break;
- case 0xec: // Identify Device
- if (drive->drive_type != IDE_DISK) {
- drive_reset(drive);
+ }
- // JRL: Should we abort here?
+ case 0xca: { // Write DMA
+ uint32_t sect_cnt = (drive->sector_count == 0) ? 256 : drive->sector_count;
+
+ if (ata_get_lba(dev, channel, &(drive->current_lba)) == -1) {
ide_abort_command(dev, channel);
- } else {
- PrintError("IDE Disks currently not implemented\n");
- return -1;
+ return 0;
+ }
+
+ drive->hd_state.cur_sector_num = 1;
+
+ drive->transfer_length = sect_cnt * HD_SECTOR_SIZE;
+ drive->transfer_index = 0;
+
+ if (channel->dma_status.active == 1) {
+ // DMA Write
+ if (dma_write(dev, channel) == -1) {
+ PrintError("Failed DMA Write\n");
+ return -1;
+ }
}
break;
+ }
+ case 0xe0: // Standby Now 1
+ case 0xe1: // Set Idle Immediate
+ case 0xe2: // Standby
+ case 0xe3: // Set Idle 1
+ case 0xe6: // Sleep Now 1
+ case 0x94: // Standby Now 2
+ case 0x95: // Idle Immediate (CFA)
+ case 0x96: // Standby 2
+ case 0x97: // Set idle 2
+ case 0x99: // Sleep Now 2
+ channel->status.val = 0;
+ channel->status.ready = 1;
+ ide_raise_irq(dev, channel);
+ break;
case 0xef: // Set Features
// Prior to this the features register has been written to.
ide_raise_irq(dev, channel);
break;
+
+ case 0x91: // Initialize Drive Parameters
+ case 0x10: // recalibrate?
+ channel->status.error = 0;
+ channel->status.ready = 1;
+ channel->status.seek_complete = 1;
+ ide_raise_irq(dev, channel);
+ break;
+ case 0xc6: { // Set multiple mode (IDE Block mode)
+ // This makes the drive transfer multiple sectors before generating an interrupt
+ uint32_t tmp_sect_num = drive->sector_num; // GCC SUCKS
+
+ if (tmp_sect_num > MAX_MULT_SECTORS) {
+ ide_abort_command(dev, channel);
+ break;
+ }
+
+ if (drive->sector_count == 0) {
+ drive->hd_state.mult_sector_num= 1;
+ } else {
+ drive->hd_state.mult_sector_num = drive->sector_count;
+ }
+
+ channel->status.ready = 1;
+ channel->status.error = 0;
+
+ ide_raise_irq(dev, channel);
+
+ break;
+ }
+ case 0xc4: // read multiple sectors
+ drive->hd_state.cur_sector_num = drive->hd_state.mult_sector_num;
default:
PrintError("Unimplemented IDE command (%x)\n", channel->cmd_reg);
return -1;
static int read_hd_data(uint8_t * dst, uint_t length, struct vm_device * dev, struct ide_channel * channel) {
- PrintError("Harddrive data port read not implemented\n");
- return -1;
+ struct ide_drive * drive = get_selected_drive(channel);
+ int data_offset = drive->transfer_index % HD_SECTOR_SIZE;
+
+
+
+ if (drive->transfer_index >= drive->transfer_length) {
+ PrintError("Buffer overrun... (xfer_len=%d) (cur_idx=%x) (post_idx=%d)\n",
+ drive->transfer_length, drive->transfer_index,
+ drive->transfer_index + length);
+ return -1;
+ }
+
+
+ if ((data_offset == 0) && (drive->transfer_index > 0)) {
+ drive->current_lba++;
+
+ if (ata_read(dev, channel, drive->data_buf, 1) == -1) {
+ PrintError("Could not read next disk sector\n");
+ return -1;
+ }
+ }
+
+ /*
+ PrintDebug("Reading HD Data (Val=%x), (len=%d) (offset=%d)\n",
+ *(uint32_t *)(drive->data_buf + data_offset),
+ length, data_offset);
+ */
+ memcpy(dst, drive->data_buf + data_offset, length);
+
+ drive->transfer_index += length;
+
+
+ /* This is the trigger for interrupt injection.
+ * For read single sector commands we interrupt after every sector
+ * For multi sector reads we interrupt only at end of the cluster size (mult_sector_num)
+ * cur_sector_num is configured depending on the operation we are currently running
+ * We also trigger an interrupt if this is the last byte to transfer, regardless of sector count
+ */
+ if (((drive->transfer_index % (HD_SECTOR_SIZE * drive->hd_state.cur_sector_num)) == 0) ||
+ (drive->transfer_index == drive->transfer_length)) {
+ if (drive->transfer_index < drive->transfer_length) {
+ // An increment is complete, but there is still more data to be transferred...
+ PrintDebug("Integral Complete, still transferring more sectors\n");
+ channel->status.data_req = 1;
+
+ drive->irq_flags.c_d = 0;
+ } else {
+ PrintDebug("Final Sector Transferred\n");
+ // This was the final read of the request
+ channel->status.data_req = 0;
+
+
+ drive->irq_flags.c_d = 1;
+ drive->irq_flags.rel = 0;
+ }
+
+ channel->status.ready = 1;
+ drive->irq_flags.io_dir = 1;
+ channel->status.busy = 0;
+
+ ide_raise_irq(dev, channel);
+ }
+
+
+ return length;
}
static int read_cd_data(uint8_t * dst, uint_t length, struct vm_device * dev, struct ide_channel * channel) {
struct ide_drive * drive = get_selected_drive(channel);
- int data_offset = drive->transfer_index % DATA_BUFFER_SIZE;
+ int data_offset = drive->transfer_index % ATAPI_BLOCK_SIZE;
int req_offset = drive->transfer_index % drive->req_len;
if (drive->cd_state.atapi_cmd != 0x28) {
return -1;
}
-
-
+
if ((data_offset == 0) && (drive->transfer_index > 0)) {
-
- if (drive->drive_type == IDE_CDROM) {
- if (atapi_update_data_buf(dev, channel) == -1) {
- PrintError("Could not update CDROM data buffer\n");
- return -1;
- }
- } else {
- PrintError("IDE Harddrives not implemented\n");
+ if (atapi_update_data_buf(dev, channel) == -1) {
+ PrintError("Could not update CDROM data buffer\n");
return -1;
}
}
drive->transfer_index += length;
+
+ // Should the req_offset be recalculated here?????
if ((req_offset == 0) && (drive->transfer_index > 0)) {
if (drive->transfer_index < drive->transfer_length) {
// An increment is complete, but there is still more data to be transferred...
struct ide_channel * channel = get_selected_channel(ide, port);
struct ide_drive * drive = get_selected_drive(channel);
- // PrintDebug("IDE: Reading Data Port %x (len=%d)\n", port, length);
+ PrintDebug("IDE: Reading Data Port %x (len=%d)\n", port, length);
if ((channel->cmd_reg == 0xec) ||
(channel->cmd_reg == 0xa1)) {
return read_drive_id((uint8_t *)dst, length, dev, channel);
}
- if (drive->drive_type == IDE_CDROM) {
+ if (drive->drive_type == BLOCK_CDROM) {
if (read_cd_data((uint8_t *)dst, length, dev, channel) == -1) {
PrintError("IDE: Could not read CD Data\n");
return -1;
}
- } else if (drive->drive_type == IDE_DISK) {
+ } else if (drive->drive_type == BLOCK_DISK) {
if (read_hd_data((uint8_t *)dst, length, dev, channel) == -1) {
PrintError("IDE: Could not read HD Data\n");
return -1;
case PRI_SECT_CNT_PORT:
case SEC_SECT_CNT_PORT:
- drive->sector_count = *(uint8_t *)src;
+ channel->drives[0].sector_count = *(uint8_t *)src;
+ channel->drives[1].sector_count = *(uint8_t *)src;
break;
case PRI_SECT_NUM_PORT:
case SEC_SECT_NUM_PORT:
- drive->sector_num = *(uint8_t *)src;
-
+ channel->drives[0].sector_num = *(uint8_t *)src;
+ channel->drives[1].sector_num = *(uint8_t *)src;
+ break;
case PRI_CYL_LOW_PORT:
case SEC_CYL_LOW_PORT:
- drive->cylinder_low = *(uint8_t *)src;
+ channel->drives[0].cylinder_low = *(uint8_t *)src;
+ channel->drives[1].cylinder_low = *(uint8_t *)src;
break;
case PRI_CYL_HIGH_PORT:
case SEC_CYL_HIGH_PORT:
- drive->cylinder_high = *(uint8_t *)src;
+ channel->drives[0].cylinder_high = *(uint8_t *)src;
+ channel->drives[1].cylinder_high = *(uint8_t *)src;
break;
case PRI_DRV_SEL_PORT:
drive = get_selected_drive(channel);
// Selecting a non-present device is a no-no
- if (drive->drive_type == IDE_NONE) {
+ if (drive->drive_type == BLOCK_NONE) {
PrintDebug("Attempting to select a non-present drive\n");
channel->error_reg.abort = 1;
channel->status.error = 1;
// if no drive is present just return 0 + reserved bits
- if (drive->drive_type == IDE_NONE) {
+ if (drive->drive_type == BLOCK_NONE) {
if ((port == PRI_DRV_SEL_PORT) ||
(port == SEC_DRV_SEL_PORT)) {
*(uint8_t *)dst = 0xa0;
drive->sector_num = 0x01;
drive->cylinder = 0x0000;
- drive->drive_type = IDE_NONE;
+ drive->drive_type = BLOCK_NONE;
memset(drive->model, 0, sizeof(drive->model));
drive->transfer_length = 0;
memset(drive->data_buf, 0, sizeof(drive->data_buf));
-
+ drive->num_cylinders = 0;
+ drive->num_heads = 0;
+ drive->num_sectors = 0;
+
drive->private_data = NULL;
- drive->cd_ops = NULL;
+ drive->ops = NULL;
}
static void init_channel(struct ide_channel * channel) {
}
-static int pci_config_update(struct pci_device * pci_dev, uint_t reg_num, int length) {
- PrintDebug("Interupt register (Dev=%s), irq=%d\n", pci_dev->name, pci_dev->config_header.intr_line);
+static int pci_config_update(uint_t reg_num, void * src, uint_t length, void * private_data) {
+ PrintDebug("PCI Config Update\n");
+ PrintDebug("\t\tInterupt register (Dev=%s), irq=%d\n", pci_dev->name, pci_dev->config_header.intr_line);
return 0;
}
static int init_ide_state(struct vm_device * dev) {
struct ide_internal * ide = (struct ide_internal *)(dev->private_data);
- struct v3_pci_bar bars[6];
- struct pci_device * pci_dev = NULL;
- int i, j;
+ int i;
- for (i = 0; i < 2; i++) {
+ /*
+ * Check if the PIIX 3 actually represents both IDE channels in a single PCI entry
+ */
+
+ for (i = 0; i < 1; i++) {
init_channel(&(ide->channels[i]));
// JRL: this is a terrible hack...
ide->channels[i].irq = PRI_DEFAULT_IRQ + i;
+ }
- for (j = 0; j < 6; j++) {
- bars[j].type = PCI_BAR_NONE;
- }
+ return 0;
+}
- bars[4].type = PCI_BAR_IO;
- bars[4].default_base_port = PRI_DEFAULT_DMA_PORT + (i * 0x8);
- bars[4].num_ports = 8;
-
- if (i == 0) {
- bars[4].io_read = read_pri_dma_port;
- bars[4].io_write = write_pri_dma_port;
- } else {
- bars[4].io_read = read_sec_dma_port;
- bars[4].io_write = write_sec_dma_port;
- }
- pci_dev = v3_pci_register_device(ide->pci, PCI_STD_DEVICE, 0, "V3_IDE", -1, bars,
- pci_config_update, NULL, NULL, dev);
- if (pci_dev == NULL) {
- PrintError("Failed to register IDE BUS %d with PCI\n", i);
- return -1;
- }
- ide->channels[i].pci_dev = pci_dev;
+static int ide_free(struct vm_device * dev) {
+ // unhook io ports....
+ // deregister from PCI?
+ return 0;
+}
+
+
+static struct v3_device_ops dev_ops = {
+ .free = ide_free,
+ .reset = NULL,
+ .start = NULL,
+ .stop = NULL,
+};
- pci_dev->config_header.vendor_id = 0x1095;
- pci_dev->config_header.device_id = 0x0646;
- pci_dev->config_header.revision = 0x8f07;
- pci_dev->config_header.subclass = 0x01;
- pci_dev->config_header.class = 0x01;
- pci_dev->config_header.intr_line = PRI_DEFAULT_IRQ + i;
- pci_dev->config_header.intr_pin = 1;
+
+
+static int connect_fn(struct guest_info * info,
+ void * frontend_data,
+ struct v3_dev_blk_ops * ops,
+ v3_cfg_tree_t * cfg,
+ void * private_data) {
+ struct ide_internal * ide = (struct ide_internal *)(frontend_data);
+ struct ide_channel * channel = NULL;
+ struct ide_drive * drive = NULL;
+
+ char * bus_str = v3_cfg_val(cfg, "bus_num");
+ char * drive_str = v3_cfg_val(cfg, "drive_num");
+ char * type_str = v3_cfg_val(cfg, "type");
+ char * model_str = v3_cfg_val(cfg, "model");
+ uint_t bus_num = 0;
+ uint_t drive_num = 0;
+
+
+ if ((!type_str) || (!drive_str) || (!bus_str)) {
+ PrintError("Incomplete IDE Configuration\n");
+ return -1;
}
+ bus_num = atoi(bus_str);
+ drive_num = atoi(drive_str);
+ channel = &(ide->channels[bus_num]);
+ drive = &(channel->drives[drive_num]);
- /* Register PIIX3 Busmaster PCI device */
- for (j = 0; j < 6; j++) {
- bars[j].type = PCI_BAR_NONE;
+ if (drive->drive_type != BLOCK_NONE) {
+ PrintError("Device slot (bus=%d, drive=%d) already occupied\n", bus_num, drive_num);
+ return -1;
}
- pci_dev = v3_pci_register_device(ide->pci, PCI_STD_DEVICE, 0, "PIIX3 IDE", -1, bars,
- NULL, NULL, NULL, dev);
-
+ strncpy(drive->model, model_str, sizeof(drive->model) - 1);
- ide->busmaster_pci = pci_dev;
+ if (strcasecmp(type_str, "cdrom") == 0) {
+ drive->drive_type = BLOCK_CDROM;
+
+ while (strlen((char *)(drive->model)) < 40) {
+ strcat((char*)(drive->model), " ");
+ }
+
+ } else if (strcasecmp(type_str, "hd") == 0) {
+ drive->drive_type = BLOCK_DISK;
- pci_dev->config_header.vendor_id = 0x8086;
- pci_dev->config_header.device_id = 0x7010;
- pci_dev->config_header.revision = 0x80;
- pci_dev->config_header.subclass = 0x01;
- pci_dev->config_header.class = 0x01;
+ drive->hd_state.accessed = 0;
+ drive->hd_state.mult_sector_num = 1;
+ drive->num_sectors = 63;
+ drive->num_heads = 16;
+ drive->num_cylinders = ops->get_capacity(private_data) / (drive->num_sectors * drive->num_heads);
+ } else {
+ PrintError("invalid IDE drive type\n");
+ return -1;
+ }
+
+
+ drive->ops = ops;
+
+ if (ide->ide_pci) {
+ // Hardcode this for now, but its not a good idea....
+ ide->ide_pci->config_space[0x41 + (bus_num * 2)] = 0x80;
+ }
+
+ drive->private_data = private_data;
return 0;
}
-static int init_ide(struct vm_device * dev) {
- //struct ide_internal * ide = (struct ide_internal *)(dev->private_data);
+
+static int ide_init(struct guest_info * vm, v3_cfg_tree_t * cfg) {
+ struct ide_internal * ide = (struct ide_internal *)V3_Malloc(sizeof(struct ide_internal));
+ char * name = v3_cfg_val(cfg, "name");
PrintDebug("IDE: Initializing IDE\n");
+ memset(ide, 0, sizeof(struct ide_internal));
+
+
+ ide->pci_bus = v3_find_dev(vm, v3_cfg_val(cfg, "bus"));
+
+ if (ide->pci_bus != NULL) {
+ struct vm_device * southbridge = v3_find_dev(vm, v3_cfg_val(cfg, "controller"));
+
+ if (!southbridge) {
+ PrintError("Could not find southbridge\n");
+ return -1;
+ }
+
+ ide->southbridge = (struct v3_southbridge *)(southbridge->private_data);
+ }
+
+ PrintDebug("IDE: Creating IDE bus x 2\n");
+
+ struct vm_device * dev = v3_allocate_device(name, &dev_ops, ide);
+
+ if (v3_attach_device(vm, dev) == -1) {
+ PrintError("Could not attach device %s\n", name);
+ return -1;
+ }
if (init_ide_state(dev) == -1) {
PrintError("Failed to initialize IDE state\n");
return -1;
}
+ PrintDebug("Connecting to IDE IO ports\n");
v3_dev_hook_io(dev, PRI_DATA_PORT,
&ide_read_data_port, &write_data_port);
v3_dev_hook_io(dev, PRI_ADDR_REG_PORT,
&read_port_std, &write_port_std);
- return 0;
-}
-static int deinit_ide(struct vm_device * dev) {
- // unhook io ports....
- // deregister from PCI?
- return 0;
-}
+ if (ide->pci_bus) {
+ struct v3_pci_bar bars[6];
+ struct v3_southbridge * southbridge = (struct v3_southbridge *)(ide->southbridge);
+ struct pci_device * sb_pci = (struct pci_device *)(southbridge->southbridge_pci);
+ struct pci_device * pci_dev = NULL;
+ int i;
-static struct vm_device_ops dev_ops = {
- .init = init_ide,
- .deinit = deinit_ide,
- .reset = NULL,
- .start = NULL,
- .stop = NULL,
-};
+ PrintDebug("Connecting IDE to PCI bus\n");
+ for (i = 0; i < 6; i++) {
+ bars[i].type = PCI_BAR_NONE;
+ }
-struct vm_device * v3_create_ide(struct vm_device * pci) {
- struct ide_internal * ide = (struct ide_internal *)V3_Malloc(sizeof(struct ide_internal));
- struct vm_device * device = v3_create_device("IDE", &dev_ops, ide);
+ bars[4].type = PCI_BAR_IO;
+ // bars[4].default_base_port = PRI_DEFAULT_DMA_PORT;
+ bars[4].default_base_port = -1;
+ bars[4].num_ports = 16;
- ide->pci = pci;
+ bars[4].io_read = read_dma_port;
+ bars[4].io_write = write_dma_port;
+ bars[4].private_data = dev;
- PrintDebug("IDE: Creating IDE bus x 2\n");
+ pci_dev = v3_pci_register_device(ide->pci_bus, PCI_STD_DEVICE, 0, sb_pci->dev_num, 1,
+ "PIIX3_IDE", bars,
+ pci_config_update, NULL, NULL, dev);
- return device;
-}
+ if (pci_dev == NULL) {
+ PrintError("Failed to register IDE BUS %d with PCI\n", i);
+ return -1;
+ }
+ /* This is for CMD646 devices
+ pci_dev->config_header.vendor_id = 0x1095;
+ pci_dev->config_header.device_id = 0x0646;
+ pci_dev->config_header.revision = 0x8f07;
+ */
+ pci_dev->config_header.vendor_id = 0x8086;
+ pci_dev->config_header.device_id = 0x7010;
+ pci_dev->config_header.revision = 0x00;
+ pci_dev->config_header.prog_if = 0x80; // Master IDE device
+ pci_dev->config_header.subclass = PCI_STORAGE_SUBCLASS_IDE;
+ pci_dev->config_header.class = PCI_CLASS_STORAGE;
+ pci_dev->config_header.command = 0;
+ pci_dev->config_header.status = 0x0280;
-int v3_ide_register_cdrom(struct vm_device * ide_dev,
- uint_t bus_num,
- uint_t drive_num,
- char * dev_name,
- struct v3_ide_cd_ops * ops,
- void * private_data) {
+ ide->ide_pci = pci_dev;
- struct ide_internal * ide = (struct ide_internal *)(ide_dev->private_data);
- struct ide_channel * channel = NULL;
- struct ide_drive * drive = NULL;
- V3_ASSERT((bus_num >= 0) && (bus_num < 2));
- V3_ASSERT((drive_num >= 0) && (drive_num < 2));
+ }
- channel = &(ide->channels[bus_num]);
- drive = &(channel->drives[drive_num]);
-
- if (drive->drive_type != IDE_NONE) {
- PrintError("Device slot (bus=%d, drive=%d) already occupied\n", bus_num, drive_num);
+ if (v3_dev_add_blk_frontend(vm, name, connect_fn, (void *)ide) == -1) {
+ PrintError("Could not register %s as frontend\n", name);
return -1;
}
+
- strncpy(drive->model, dev_name, sizeof(drive->model) - 1);
-
- while (strlen((char *)(drive->model)) < 40) {
- strcat((char*)(drive->model), " ");
- }
+ PrintDebug("IDE Initialized\n");
+ return 0;
+}
- drive->drive_type = IDE_CDROM;
- drive->cd_ops = ops;
+device_register("IDE", ide_init)
- drive->private_data = private_data;
- return 0;
-}
-int v3_ide_register_harddisk(struct vm_device * ide_dev,
- uint_t bus_num,
- uint_t drive_num,
- char * dev_name,
- struct v3_ide_hd_ops * ops,
- void * private_data) {
+int v3_ide_get_geometry(struct vm_device * ide_dev, int channel_num, int drive_num,
+ uint32_t * cylinders, uint32_t * heads, uint32_t * sectors) {
struct ide_internal * ide = (struct ide_internal *)(ide_dev->private_data);
- struct ide_channel * channel = NULL;
- struct ide_drive * drive = NULL;
-
- V3_ASSERT((bus_num >= 0) && (bus_num < 2));
- V3_ASSERT((drive_num >= 0) && (drive_num < 2));
-
- channel = &(ide->channels[bus_num]);
- drive = &(channel->drives[drive_num]);
+ struct ide_channel * channel = &(ide->channels[channel_num]);
+ struct ide_drive * drive = &(channel->drives[drive_num]);
- if (drive->drive_type != IDE_NONE) {
- PrintError("Device slot (bus=%d, drive=%d) already occupied\n", bus_num, drive_num);
+ if (drive->drive_type == BLOCK_NONE) {
return -1;
}
- strncpy(drive->model, dev_name, sizeof(drive->model) - 1);
+ *cylinders = drive->num_cylinders;
+ *heads = drive->num_heads;
+ *sectors = drive->num_sectors;
- drive->drive_type = IDE_DISK;
+ return 0;
+}
- drive->hd_ops = ops;
- drive->private_data = private_data;
- return 0;
-}
