#include <devices/ide.h>
#include "ide-types.h"
-
+#define PRI_DEFAULT_IRQ 14
+#define SEC_DEFAULT_IRQ 15
#define PRI_DATA_PORT 0x1f0
#define PRI_FEATURES_PORT 0x1f1
char model[41];
+
+ uint_t data_offset;
+
+ // data buffer...
+ uint8_t buffer[2048];
+
void * private_data;
uint8_t sector_count; // 0x1f2,0x172
struct ide_status_reg status; // [read] 0x1f7,0x177
uint8_t command_reg; // [write] 0x1f7,0x177
+ int irq; // this is temporary until we add PCI support
+
// Control Registers
struct ide_ctrl_reg ctrl_reg; // [write] 0x3f6,0x376
};
}
+static void ide_raise_irq(struct vm_device * dev, struct ide_channel * channel) {
+ if (channel->ctrl_reg.irq_disable == 0) {
+ v3_raise_irq(dev->vm, channel->irq);
+ }
+}
+
+
static void drive_reset(struct ide_drive * drive) {
drive->sector_count = 0x01;
drive->sector_num = 0x01;
}
+static void ide_abort_command(struct vm_device * dev, struct ide_channel * channel) {
+ channel->status.val = 0x41; // Error + ready
+ channel->error_reg.val = 0x04; // No idea...
+
+ ide_raise_irq(dev, channel);
+}
+
+
+
+
+// Include the ATAPI interface handlers
+#include "atapi.h"
+
+
+
static int write_cmd_port(ushort_t port, void * src, uint_t length, struct vm_device * dev) {
+ struct ide_internal * ide = (struct ide_internal *)(dev->private_data);
+ struct ide_channel * channel = get_selected_channel(ide, port);
+ struct ide_drive * drive = get_selected_drive(channel);
+
+ if (length != 1) {
+ PrintError("Invalid Write Length on IDE command Port %x\n", port);
+ return -1;
+ }
+
+ channel->command_reg = *(uint8_t *)src;
+
+
PrintDebug("IDE: Writing Command Port %x (val=%x)\n", port, *(uint8_t *)src);
+
+ switch (channel->command_reg) {
+
+ case 0xa0: // ATAPI Command Packet
+ if (drive->drive_type != IDE_CDROM) {
+ ide_abort_command(dev, channel);
+ }
+
+ drive->sector_count = 1;
+
+ channel->status.busy = 0;
+ channel->status.write_fault = 0;
+ channel->status.data_req = 1;
+ channel->status.error = 0;
+
+ drive->data_offset = 0;
+
+ case 0xa1: // ATAPI Identify Device Packet
+ atapi_identify_device(drive);
+
+ channel->error_reg.val = 0;
+ channel->status.val = 0x58; // ready, data_req, seek_complete
+
+ ide_raise_irq(dev, channel);
+ case 0xec: // Identify Device
+ if (drive->drive_type != IDE_DISK) {
+ drive_reset(drive);
+
+ // JRL: Should we abort here?
+ ide_abort_command(dev, channel);
+ } else {
+ PrintError("IDE Disks currently not implemented\n");
+ return -1;
+ }
+ break;
+
+ }
+
return -1;
}
return -1;
}
+ PrintDebug("\tVal=%x\n", *(uint8_t *)dst);
+
return length;
}
drive->drive_type = IDE_NONE;
+ drive->data_offset = 0;
memset(drive->model, 0, sizeof(drive->model));
+ memset(drive->buffer, 0, sizeof(drive->buffer));
+ drive->private_data = NULL;
drive->cd_ops = NULL;
}
channel->command_reg = 0x00;
channel->ctrl_reg.val = 0x08;
+
for (i = 0; i < 2; i++) {
init_drive(&(channel->drives[i]));
}
for (i = 0; i < 2; i++) {
init_channel(&(ide->channels[i]));
+
+ // JRL: this is a terrible hack...
+ ide->channels[i].irq = PRI_DEFAULT_IRQ + i;
}
}
strncpy(drive->model, dev_name, sizeof(drive->model) - 1);
+ while (strlen((char *)(drive->model)) < 40) {
+ strcat((char*)(drive->model), " ");
+ }
+
+
drive->drive_type = IDE_CDROM;
drive->cd_ops = ops;