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Diffstat (limited to 'src/dev/ide_disk.cc')
-rw-r--r--src/dev/ide_disk.cc200
1 files changed, 103 insertions, 97 deletions
diff --git a/src/dev/ide_disk.cc b/src/dev/ide_disk.cc
index 9022cf087..83faf508e 100644
--- a/src/dev/ide_disk.cc
+++ b/src/dev/ide_disk.cc
@@ -177,7 +177,7 @@ Addr
IdeDisk::pciToDma(Addr pciAddr)
{
if (ctrl)
- return ctrl->plat->pciToDma(pciAddr);
+ return ctrl->pciToDma(pciAddr);
else
panic("Access to unset controller!\n");
}
@@ -187,120 +187,127 @@ IdeDisk::pciToDma(Addr pciAddr)
////
void
-IdeDisk::read(const Addr &offset, IdeRegType reg_type, uint8_t *data)
+IdeDisk::readCommand(const Addr offset, int size, uint8_t *data)
{
- DevAction_t action = ACT_NONE;
-
- switch (reg_type) {
- case COMMAND_BLOCK:
- switch (offset) {
- // Data transfers occur two bytes at a time
- case DATA_OFFSET:
- *(uint16_t*)data = cmdReg.data;
- action = ACT_DATA_READ_SHORT;
- break;
- case ERROR_OFFSET:
- *data = cmdReg.error;
- break;
- case NSECTOR_OFFSET:
- *data = cmdReg.sec_count;
- break;
- case SECTOR_OFFSET:
- *data = cmdReg.sec_num;
- break;
- case LCYL_OFFSET:
- *data = cmdReg.cyl_low;
- break;
- case HCYL_OFFSET:
- *data = cmdReg.cyl_high;
- break;
- case DRIVE_OFFSET:
- *data = cmdReg.drive;
- break;
- case STATUS_OFFSET:
- *data = status;
- action = ACT_STAT_READ;
- break;
- default:
- panic("Invalid IDE command register offset: %#x\n", offset);
+ if (offset == DATA_OFFSET) {
+ if (size == sizeof(uint16_t)) {
+ *(uint16_t *)data = cmdReg.data;
+ } else if (size == sizeof(uint32_t)) {
+ *(uint16_t *)data = cmdReg.data;
+ updateState(ACT_DATA_READ_SHORT);
+ *((uint16_t *)data + 1) = cmdReg.data;
+ } else {
+ panic("Data read of unsupported size %d.\n", size);
}
+ updateState(ACT_DATA_READ_SHORT);
+ return;
+ }
+ assert(size == sizeof(uint8_t));
+ switch (offset) {
+ case ERROR_OFFSET:
+ *data = cmdReg.error;
break;
- case CONTROL_BLOCK:
- if (offset == ALTSTAT_OFFSET)
- *data = status;
- else
- panic("Invalid IDE control register offset: %#x\n", offset);
+ case NSECTOR_OFFSET:
+ *data = cmdReg.sec_count;
+ break;
+ case SECTOR_OFFSET:
+ *data = cmdReg.sec_num;
+ break;
+ case LCYL_OFFSET:
+ *data = cmdReg.cyl_low;
+ break;
+ case HCYL_OFFSET:
+ *data = cmdReg.cyl_high;
+ break;
+ case DRIVE_OFFSET:
+ *data = cmdReg.drive;
+ break;
+ case STATUS_OFFSET:
+ *data = status;
+ updateState(ACT_STAT_READ);
break;
default:
- panic("Unknown register block!\n");
+ panic("Invalid IDE command register offset: %#x\n", offset);
}
- DPRINTF(IdeDisk, "Read to disk at offset: %#x data %#x\n", offset,
- (uint32_t)*data);
-
- if (action != ACT_NONE)
- updateState(action);
+ DPRINTF(IdeDisk, "Read to disk at offset: %#x data %#x\n", offset, *data);
}
void
-IdeDisk::write(const Addr &offset, IdeRegType reg_type, const uint8_t *data)
+IdeDisk::readControl(const Addr offset, int size, uint8_t *data)
{
- DevAction_t action = ACT_NONE;
+ assert(size == sizeof(uint8_t));
+ *data = status;
+ if (offset != ALTSTAT_OFFSET)
+ panic("Invalid IDE control register offset: %#x\n", offset);
+ DPRINTF(IdeDisk, "Read to disk at offset: %#x data %#x\n", offset, *data);
+}
- switch (reg_type) {
- case COMMAND_BLOCK:
- switch (offset) {
- case DATA_OFFSET:
- cmdReg.data = *(uint16_t*)data;
- action = ACT_DATA_WRITE_SHORT;
- break;
- case FEATURES_OFFSET:
- break;
- case NSECTOR_OFFSET:
- cmdReg.sec_count = *data;
- break;
- case SECTOR_OFFSET:
- cmdReg.sec_num = *data;
- break;
- case LCYL_OFFSET:
- cmdReg.cyl_low = *data;
- break;
- case HCYL_OFFSET:
- cmdReg.cyl_high = *data;
- break;
- case DRIVE_OFFSET:
- cmdReg.drive = *data;
- action = ACT_SELECT_WRITE;
- break;
- case COMMAND_OFFSET:
- cmdReg.command = *data;
- action = ACT_CMD_WRITE;
- break;
- default:
- panic("Invalid IDE command register offset: %#x\n", offset);
+void
+IdeDisk::writeCommand(const Addr offset, int size, const uint8_t *data)
+{
+ if (offset == DATA_OFFSET) {
+ if (size == sizeof(uint16_t)) {
+ cmdReg.data = *(const uint16_t *)data;
+ } else if (size == sizeof(uint32_t)) {
+ cmdReg.data = *(const uint16_t *)data;
+ updateState(ACT_DATA_WRITE_SHORT);
+ cmdReg.data = *((const uint16_t *)data + 1);
+ } else {
+ panic("Data write of unsupported size %d.\n", size);
}
+ updateState(ACT_DATA_WRITE_SHORT);
+ return;
+ }
+
+ assert(size == sizeof(uint8_t));
+ switch (offset) {
+ case FEATURES_OFFSET:
break;
- case CONTROL_BLOCK:
- if (offset == CONTROL_OFFSET) {
- if (*data & CONTROL_RST_BIT) {
- // force the device into the reset state
- devState = Device_Srst;
- action = ACT_SRST_SET;
- } else if (devState == Device_Srst && !(*data & CONTROL_RST_BIT))
- action = ACT_SRST_CLEAR;
-
- nIENBit = (*data & CONTROL_IEN_BIT) ? true : false;
- }
- else
- panic("Invalid IDE control register offset: %#x\n", offset);
+ case NSECTOR_OFFSET:
+ cmdReg.sec_count = *data;
+ break;
+ case SECTOR_OFFSET:
+ cmdReg.sec_num = *data;
+ break;
+ case LCYL_OFFSET:
+ cmdReg.cyl_low = *data;
+ break;
+ case HCYL_OFFSET:
+ cmdReg.cyl_high = *data;
+ break;
+ case DRIVE_OFFSET:
+ cmdReg.drive = *data;
+ updateState(ACT_SELECT_WRITE);
+ break;
+ case COMMAND_OFFSET:
+ cmdReg.command = *data;
+ updateState(ACT_CMD_WRITE);
break;
default:
- panic("Unknown register block!\n");
+ panic("Invalid IDE command register offset: %#x\n", offset);
}
+ DPRINTF(IdeDisk, "Write to disk at offset: %#x data %#x\n", offset,
+ (uint32_t)*data);
+}
+
+void
+IdeDisk::writeControl(const Addr offset, int size, const uint8_t *data)
+{
+ if (offset != CONTROL_OFFSET)
+ panic("Invalid IDE control register offset: %#x\n", offset);
+
+ if (*data & CONTROL_RST_BIT) {
+ // force the device into the reset state
+ devState = Device_Srst;
+ updateState(ACT_SRST_SET);
+ } else if (devState == Device_Srst && !(*data & CONTROL_RST_BIT)) {
+ updateState(ACT_SRST_CLEAR);
+ }
+
+ nIENBit = *data & CONTROL_IEN_BIT;
DPRINTF(IdeDisk, "Write to disk at offset: %#x data %#x\n", offset,
(uint32_t)*data);
- if (action != ACT_NONE)
- updateState(action);
}
////
@@ -683,7 +690,6 @@ IdeDisk::intrPost()
// talk to controller to set interrupt
if (ctrl) {
- ctrl->bmi_regs.bmis0 |= IDEINTS;
ctrl->intrPost();
}
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-09 03:04:44 +0000