#include <devices/ramdisk.h>
#include <palacios/vmm.h>
-#include <string.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)
+
+
+
/*
* Data type definitions
*
#define INDEX_PULSE_CYCLE 10
#define MAX_ATA_CHANNEL 4
-#define RD_LITTLE_ENDIAN
#define INTR_REASON_BIT_ERR 0x01
#define READ_BUF_GT_512 0x04
-typedef enum _sense {
- SENSE_NONE = 0, SENSE_NOT_READY = 2, SENSE_ILLEGAL_REQUEST = 5,
- SENSE_UNIT_ATTENTION = 6
-} sense_t ;
-typedef enum _asc {
- ASC_INV_FIELD_IN_CMD_PACKET = 0x24,
- ASC_MEDIUM_NOT_PRESENT = 0x3a,
- ASC_SAVING_PARAMETERS_NOT_SUPPORTED = 0x39,
- ASC_LOGICAL_BLOCK_OOR = 0x21
-} asc_t ;
+#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
ssize_t rd_write (const void* buf, size_t count);
-typedef struct {
-
- unsigned cylinders ;
- unsigned heads ;
- unsigned sectors ;
-
- //iso file descriptor
- int fd ;
-} device_image_t;
-
-
-
-struct controller_t {
- struct {
- rd_bool busy ;
- rd_bool drive_ready ;
- rd_bool write_fault ;
- rd_bool seek_complete ;
- rd_bool drq ;
- rd_bool corrected_data ;
- rd_bool index_pulse ;
- unsigned int index_pulse_count ;
- rd_bool err ;
- } status;
- Bit8u error_register ;
- Bit8u head_no ;
- union {
- Bit8u sector_count ;
- struct {
-#ifdef RD_LITTLE_ENDIAN
- unsigned c_d : 1;
- unsigned i_o : 1;
- unsigned rel : 1;
- unsigned tag : 5;
-
-#else /* RD_BIG_ENDIAN */
- unsigned tag : 5;
- unsigned rel : 1;
- unsigned i_o : 1;
- unsigned c_d : 1;
-#endif
-
- } interrupt_reason;
- };
- Bit8u sector_no ;
- union {
- Bit16u cylinder_no ;
- Bit16u byte_count ;
- };
- Bit8u buffer[2048]; ;
- Bit32u buffer_index ;
- Bit32u drq_index ;
- Bit8u current_command ;
- Bit8u sectors_per_block ;
- Bit8u lba_mode ;
- struct {
- // 0=normal, 1=reset controller
- rd_bool reset ;
- // 0=allow irq, 1=disable irq
- rd_bool disable_irq ;
- } control;
- Bit8u reset_in_progress ;
- Bit8u features ;
- };
-
-struct sense_info_t{
- sense_t sense_key ;
- struct {
- Bit8u arr[4] ;
- } information;
- struct {
- Bit8u arr[4] ;
- } specific_inf;
- struct {
- Bit8u arr[3] ;
- } key_spec;
- Bit8u fruc ;
- Bit8u asc ;
- Bit8u ascq ;
-};
-
-struct error_recovery_t {
- unsigned char data[8] ;
-
- // error_recovery_t ();
-};
-
-uint16 rd_read_16bit(const uint8* buf); //__attribute__(regparm(1))
-uint32 rd_read_32bit(const uint8* buf); //__attribute__(regparm(1))
-
-struct cdrom_t {
- rd_bool ready ;
- rd_bool locked ;
-
-
- struct cdrom_interface *cd ;
-
- uint32 capacity ;
- int next_lba ;
- int remaining_blocks ;
- struct currentStruct {
- struct error_recovery_t error_recovery ;
- } current;
-};
-
-struct atapi_t {
- uint8 command ;
- int drq_bytes ;
- int total_bytes_remaining ;
-};
-
-
-typedef enum {
- IDE_NONE, IDE_DISK, IDE_CDROM
-} device_type_t ;
-
-
- // FIXME:
- // For each ATA channel we should have one controller struct
- // and an array of two drive structs
-struct channel_t {
- struct drive_t {
- device_image_t hard_drive ;
- device_type_t device_type ;
- // 512 byte buffer for ID drive command
- // These words are stored in native word endian format, as
- // they are fetched and returned via a return(), so
- // there's no need to keep them in x86 endian format.
- Bit16u id_drive[256] ;
-
- struct controller_t controller ;
- struct cdrom_t cdrom ;
- struct sense_info_t sense ;
- struct atapi_t atapi ;
-
- Bit8u model_no[41] ;
- } drives[2];
- unsigned drive_select ;
-
- Bit16u ioaddr1 ;
- Bit16u ioaddr2 ;
- Bit8u irq ;
-};
-
-struct ramdisk_t;
-
-struct ramdisk_ctrl_ops {
- Bit32u (*init)(struct ramdisk_t *ramdisk,
- struct vm_device *dev);
- void (*close)(struct ramdisk_t *ramdisk);
- void (*reset)(struct ramdisk_t *ramdisk, unsigned type);
-
-};
-
-struct ramdisk_emu_ops {
-
- int (*read_port)(ushort_t port,
- void *dst,
- uint_t length,
- struct vm_device *dev);
-
- int (*write_port)(ushort_t port,
- void *src,
- uint_t length,
- struct vm_device *dev);
-
- int (*read_port_ignore)(ushort_t port,
- void *dst,
- uint_t length,
- struct vm_device *dev);
-
- int (*write_port_ignore)(ushort_t port,
- void *src,
- uint_t length,
- struct vm_device *dev);
-};
-
struct ramdisk_t {
-
struct channel_t channels[MAX_ATA_CHANNEL];
-
- struct ramdisk_ctrl_ops cops;
-
- struct ramdisk_emu_ops eops;
-
- void *private_data;
- // struct vm_device *dev;
};
#define INT13_ELTORITO 0xe2 //0x2fa
#define INT13_DISKETTE_FUNCTION 0xe3 //0x2fb
-// some packet handling macros
-#define EXTRACT_FIELD(arr,byte,start,num_bits) (((arr)[(byte)] >> (start)) & ((1 << (num_bits)) - 1))
-#define get_packet_field(c,b,s,n) (EXTRACT_FIELD((SELECTED_CONTROLLER((c)).buffer),(b),(s),(n)))
-#define get_packet_byte(c,b) (SELECTED_CONTROLLER((c)).buffer[(b)])
-#define get_packet_word(c,b) (((uint16)SELECTED_CONTROLLER((c)).buffer[(b)] << 8) | SELECTED_CONTROLLER((c)).buffer[(b)+1])
-#define CONTROLLER(c,a) (channels[(c)].drives[(a)]).controller
-#define DRIVE(c,a) (channels[(c)].drives[(a)])
-#define SELECTED_CONTROLLER(c) (CONTROLLER((c), channels[(c)].drive_select))
-#define SELECTED_DRIVE(c) (DRIVE((c), channels[(c)].drive_select))
-
-
-#define DRIVE_IS_PRESENT(c,a) (channels[(c)].drives[(a)].device_type != IDE_NONE)
-#define DRIVE_IS_HD(c,a) (channels[(c)].drives[(a)].device_type == IDE_DISK)
-#define DRIVE_IS_CD(c,a) (channels[(c)].drives[(a)].device_type == IDE_CDROM)
-#define SELECTED_MODEL(c) (channels[(c)].drives[channels[(c)].drive_select].model_no)
-
-#define MASTER_SELECTED(c) (!channels[(c)].drive_select)
-#define SLAVE_SELECTED(c) (channels[(c)].drive_select)
-
-#define SELECTED_IS_PRESENT(c) (DRIVE_IS_PRESENT((c),SLAVE_SELECTED((c))))
-#define SELECTED_IS_HD(c) (DRIVE_IS_HD((c),SLAVE_SELECTED((c))))
-#define SELECTED_IS_CD(c) (DRIVE_IS_CD((c),SLAVE_SELECTED((c))))
-
-#define ANY_IS_PRESENT(c) (DRIVE_IS_PRESENT((c),0) || DRIVE_IS_PRESENT((c),1))
-#define SELECTED_TYPE_STRING(channel) ((SELECTED_IS_CD(channel)) ? "CD-ROM" : "NONE")
-
-#define WRITE_FEATURES(c,a) do { uint8 _a = a; CONTROLLER((c),0).features = _a; CONTROLLER((c),1).features = _a; } while(0)
-#define WRITE_SECTOR_COUNT(c,a) do { uint8 _a = a; CONTROLLER((c),0).sector_count = _a; CONTROLLER((c),1).sector_count = _a; } while(0)
-#define WRITE_SECTOR_NUMBER(c,a) do { uint8 _a = a; CONTROLLER((c),0).sector_no = _a; CONTROLLER((c),1).sector_no = _a; } while(0)
-#define WRITE_CYLINDER_LOW(c,a) do { uint8 _a = a; CONTROLLER((c),0).cylinder_no = (CONTROLLER((c),0).cylinder_no & 0xff00) | _a; CONTROLLER((c),1).cylinder_no = (CONTROLLER((c),1).cylinder_no & 0xff00) | _a; } while(0)
-#define WRITE_CYLINDER_HIGH(c,a) do { uint16 _a = a; CONTROLLER((c),0).cylinder_no = (_a << 8) | (CONTROLLER((c),0).cylinder_no & 0xff); CONTROLLER((c),1).cylinder_no = (_a << 8) | (CONTROLLER((c),1).cylinder_no & 0xff); } while(0)
-#define WRITE_HEAD_NO(c,a) do { uint8 _a = a; CONTROLLER((c),0).head_no = _a; CONTROLLER((c),1).head_no = _a; } while(0)
-#define WRITE_LBA_MODE(c,a) do { uint8 _a = a; CONTROLLER((c),0).lba_mode = _a; CONTROLLER((c),1).lba_mode = _a; } while(0)
-
-
-
-#define GOTO_RETURN_VALUE if(io_len==4){\
- goto return_value32;\
- }\
- else if(io_len==2){\
- value16=(Bit16u)value32;\
- goto return_value16;\
- }\
- else{\
- value8=(Bit8u)value32;\
- goto return_value8;\
- }
-
-#define UNUSED(x) ((void)x)
-
-#define PACKET_SIZE 12
-
-static struct ramdisk_t *ramdisk_state;
-
+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 routines
- */
-static
-int ramdisk_read_port(ushort_t port,
- void *dst,
- uint_t length,
- struct vm_device *dev);
+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
-int ramdisk_write_port(ushort_t port,
- void *src,
- uint_t length,
- struct vm_device *dev);
+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
-int ramdisk_read_port_ignore(ushort_t port,
- void *dst,
- uint_t length,
- struct vm_device *dev);
-static
-int ramdisk_write_port_ignore(ushort_t port,
- void *src,
- uint_t length,
- struct vm_device *dev);
+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);
-static
-Bit32u rd_read_handler(struct channel_t *channels, Bit32u address, unsigned io_len);
+ channel->drives[1].controller.cylinder_no &= 0x00ff;
+ channel->drives[1].controller.cylinder_no |= (val2 & 0xff00);
+}
-static
-void rd_write_handler(struct channel_t *channels, Bit32u address,
- Bit32u value, unsigned io_len);
+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;
+}
-/*
- * ATAPI routines
- */
-static
-void rd_identify_ATAPI_drive(struct channel_t *channels, Bit8u channel);
+static inline struct drive_t * get_selected_drive(struct channel_t * channel) {
+ return &(channel->drives[channel->drive_select]);
+}
-static
-void rd_init_send_atapi_command(struct channel_t *channels, Bit8u channel, Bit8u command, int req_length, int alloc_length, bool lazy /*= false*/);
+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
-void rd_ready_to_send_atapi(struct channel_t *channels, Bit8u channel);
-static
-void rd_atapi_cmd_error(struct channel_t *channels, Bit8u channel, sense_t sense_key, asc_t asc);
+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
-void rd_init_mode_sense_single(struct channel_t *channels, Bit8u channel, const void* src, int size);
+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
-void rd_atapi_cmd_nop(struct channel_t *channels, Bit8u channel);
-static
-void rd_command_aborted(struct channel_t *channels, Bit8u channel, unsigned value);
+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;
+}
-/*
- * Interrupt handling
- */
-static
-void rd_raise_interrupt(struct channel_t *channels, Bit8u channel);
+static inline uchar_t get_packet_field(struct channel_t * channel, uint_t packet_offset, uint_t bit_offset, uint_t num_bits) {
+ struct drive_t * drive = get_selected_drive(channel);
+ return extract_bits(drive->controller.buffer, packet_offset, bit_offset, num_bits);
+}
-static
-void rd_lower_irq(struct vm_device *dev, Bit32u irq);
+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;
+}
-/*
- * Helper routines
- */
-uint16 rd_read_16bit(const uint8* buf)
-{
+static inline uint16_t rd_read_16bit(const uint8_t* buf) {
return (buf[0] << 8) | buf[1];
}
-uint32 rd_read_32bit(const uint8* buf)
-{
+static inline uint32_t rd_read_32bit(const uint8_t* buf) {
return (buf[0] << 24) | (buf[1] << 16) | (buf[2] << 8) | buf[3];
}
-////////////////////////////////////////////////////////////////////
-
-
-void rd_print_state(struct ramdisk_t *ramdisk,
- struct vm_device *dev)
-//Bit32u rd_init_harddrive(struct channel_t *channels)
-{
-
- 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);
+/*
+ * ATAPI routines
+ */
- 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);
+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);
- 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);
+/*
+ * 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);
- 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);
+/*
+ * Helper routines
+ */
- 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);
+#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
+////////////////////////////////////////////////////////////////////
- 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;
-}
-Bit32u rd_init_harddrive(struct ramdisk_t *ramdisk,
- struct vm_device *dev)
-{
-
- uchar_t channel;
- uchar_t device;
+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 = 0; channel < MAX_ATA_CHANNEL; channel++)
- memset((char *)(channels + channel), 0, sizeof(struct channel_t));
+ for (channel_num = 0; channel_num < MAX_ATA_CHANNEL; channel_num++) {
+ memset((char *)(channels + channel_num), 0, sizeof(struct channel_t));
+ }
- for (channel = 0; channel < MAX_ATA_CHANNEL; channel++){
-
- channels[channel].ioaddr1 = 0x0;
- channels[channel].ioaddr2 = 0x0;
- channels[channel].irq = 0;
+ 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(channel,device).status.busy = 0;
- CONTROLLER(channel,device).status.drive_ready = 1;
- CONTROLLER(channel,device).status.write_fault = 0;
- CONTROLLER(channel,device).status.seek_complete = 1;
- CONTROLLER(channel,device).status.drq = 0;
- CONTROLLER(channel,device).status.corrected_data = 0;
- CONTROLLER(channel,device).status.index_pulse = 0;
- CONTROLLER(channel,device).status.index_pulse_count = 0;
- CONTROLLER(channel,device).status.err = 0;
-
- CONTROLLER(channel,device).error_register = 0x01; // diagnostic code: no error
- CONTROLLER(channel,device).head_no = 0;
- CONTROLLER(channel,device).sector_count = 1;
- CONTROLLER(channel,device).sector_no = 1;
- CONTROLLER(channel,device).cylinder_no = 0;
- CONTROLLER(channel,device).current_command = 0x00;
- CONTROLLER(channel,device).buffer_index = 0;
-
- CONTROLLER(channel,device).control.reset = 0;
- CONTROLLER(channel,device).control.disable_irq = 0;
- CONTROLLER(channel,device).reset_in_progress = 0;
-
- CONTROLLER(channel,device).sectors_per_block = 0x80;
- CONTROLLER(channel,device).lba_mode = 0;
- CONTROLLER(channel,device).features = 0;
+ controller->features = 0;
- // If not present
- channels[channel].drives[device].device_type = IDE_NONE;
+ // If not present
+ drive->device_type = IDE_NONE;
// Make model string
- strncpy((char*)channels[channel].drives[device].model_no,
- "", 40);
- while(strlen((char *)channels[channel].drives[device].model_no) < 40) {
- strcat ((char*)channels[channel].drives[device].model_no, " ");
+ strncpy((char*)(drive->model_no), "", 40);
+ while(strlen((char *)(drive->model_no)) < 40) {
+ strcat ((char*)(drive->model_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.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].controller.control.disable_irq = %d\n", channel, device, channels[channel].drives[device].controller.control.disable_irq);
-
-
- if (channel == 1) {
+ if (channel_num == 1) {
- channels[channel].ioaddr1 = 0x170;
- channels[channel].ioaddr2 = 0x370;
- channels[channel].irq = 15;
- channels[channel].drive_select = 0;
+ channel->ioaddr1 = 0x170;
+ channel->ioaddr2 = 0x370;
+ channel->irq = 15;
+ channel->drive_select = 0;
if (device == 0) {
// Make model string
- strncpy((char*)channels[channel].drives[device].model_no,
- "Zheng's Ramdisk", 40);
- while (strlen((char *)channels[channel].drives[device].model_no) < 40) {
- strcat ((char*)channels[channel].drives[device].model_no, " ");
+ 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);
- channels[channel].drives[device].device_type = IDE_CDROM;
- channels[channel].drives[device].cdrom.locked = 0;
- channels[channel].drives[device].sense.sense_key = SENSE_NONE;
- channels[channel].drives[device].sense.asc = 0;
- channels[channel].drives[device].sense.ascq = 0;
+ Ramdisk_Print("CDROM on target %d/%d\n", channel, device);
-
- //Check bit fields
- channels[channel].drives[device].controller.sector_count = 0;
- channels[channel].drives[device].controller.interrupt_reason.c_d = 1;
- if (channels[channel].drives[device].controller.sector_count != 0x01) {
- Ramdisk_Print("interrupt reason bit field error\n");
- return INTR_REASON_BIT_ERR;
- }
-
- channels[channel].drives[device].controller.sector_count = 0;
- channels[channel].drives[device].controller.interrupt_reason.i_o = 1;
- if (channels[channel].drives[device].controller.sector_count != 0x02) {
- Ramdisk_Print("interrupt reason bit field error\n");
- return INTR_REASON_BIT_ERR;
- }
+ drive->device_type = IDE_CDROM;
+ drive->cdrom.locked = 0;
+ drive->sense.sense_key = SENSE_NONE;
+ drive->sense.asc = 0;
+ drive->sense.ascq = 0;
- channels[channel].drives[device].controller.sector_count = 0;
- channels[channel].drives[device].controller.interrupt_reason.rel = 1;
- if (channels[channel].drives[device].controller.sector_count != 0x04) {
- Ramdisk_Print("interrupt reason bit field error\n");
+#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;
}
-
- channels[channel].drives[device].controller.sector_count = 0;
- channels[channel].drives[device].controller.interrupt_reason.tag = 3;
- if (channels[channel].drives[device].controller.sector_count != 0x18) {
- Ramdisk_Print("interrupt reason bit field error\n");
- return INTR_REASON_BIT_ERR;
- }
-
+#endif
- channels[channel].drives[device].controller.sector_count = 0;
+ controller->sector_count = 0;
// allocate low level driver
- channels[channel].drives[device].cdrom.cd = (struct cdrom_interface*)V3_Malloc(sizeof(struct cdrom_interface));
- Ramdisk_Print("cd = %x\n", channels[channel].drives[device].cdrom.cd);
- V3_ASSERT(channels[channel].drives[device].cdrom.cd != NULL);
+ 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 = channels[channel].drives[device].cdrom.cd;
+ 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((channels[channel].drives[device].cdrom.cd->ops).insert_cdrom(cdif, NULL)) {
+ if((drive->cdrom.cd->ops).insert_cdrom(cdif, NULL)) {
Ramdisk_Print("\t\tMedia present in CD-ROM drive\n");
- channels[channel].drives[device].cdrom.ready = 1;
- channels[channel].drives[device].cdrom.capacity = channels[channel].drives[device].cdrom.cd->ops.capacity(cdif);
+ 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");
- channels[channel].drives[device].cdrom.ready = 0;
+ drive->cdrom.ready = 0;
}
}//if device = 0
}//for device
}//for channel
- ramdisk->private_data = dev;
- ramdisk_state = ramdisk;
- Ramdisk_Print("ramdisk_state = %x\n", ramdisk_state);
- Ramdisk_Print("ramdisk = %x\n", ramdisk);
- // rd_print_state(ramdisk, dev);
+
return 0;
}
-void rd_reset_harddrive(struct ramdisk_t *ramdisk, unsigned type)
-{
+/*
+ static void rd_reset_harddrive(struct ramdisk_t *ramdisk, unsigned type) {
return;
-}
-
+ }
-void rd_close_harddrive(struct ramdisk_t *ramdisk)
-{
+*/
+static void rd_close_harddrive(struct ramdisk_t *ramdisk) {
return;
}
////////////////////////////////////////////////////////////////////
-static
-Bit32u rd_read_handler(struct channel_t *channels, Bit32u address, unsigned io_len)
-{
- Bit8u value8;
- Bit16u value16;
- Bit32u value32;
- unsigned drive_select;
- unsigned index;
- unsigned increment = 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;
- Bit8u channel = MAX_ATA_CHANNEL;
- Bit32u port = 0xff; // undefined
- //Ramdisk_Print("[rd_read_handler]\n");
-
- for (channel=0; channel<MAX_ATA_CHANNEL; channel++) {
- if ((address & 0xfff8) == channels[channel].ioaddr1) {
- port = address - channels[channel].ioaddr1;
- break;
- }
- else if ((address & 0xfff8) == channels[channel].ioaddr2) {
- port = address - channels[channel].ioaddr2 + 0x10;
- break;
- }
- }
-
- if (channel == MAX_ATA_CHANNEL) {
- if ((address < 0x03f6) || (address > 0x03f7)) {
- RD_PANIC("Error: read: unable to find ATA channel, ioport=0x%04x\n", address);
- return 0;
- } else {
- channel = 0;
- port = address - 0x03e0;
- }
- }
-
- drive_select = channels[channel].drive_select;
- if (port != 0x00){
- 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);
- }else{
-
+ 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 cdrom_interface *cdif = channels[channel].drives[drive_select].cdrom.cd;
- switch (port) {
+ switch (controller->current_command) {
+ case 0xec: // IDENTIFY DEVICE
+ case 0xa1:
+ {
- case 0x00: // hard disk data (16bit) 0x1f0
- switch (SELECTED_CONTROLLER(channel).current_command) {
- case 0xec: // IDENTIFY DEVICE
- case 0xa1:
-
- index = 0;
- SELECTED_CONTROLLER(channel).status.busy = 0;
- SELECTED_CONTROLLER(channel).status.drive_ready = 1;
- SELECTED_CONTROLLER(channel).status.write_fault = 0;
- SELECTED_CONTROLLER(channel).status.seek_complete = 1;
- SELECTED_CONTROLLER(channel).status.corrected_data = 0;
- SELECTED_CONTROLLER(channel).status.err = 0;
+ 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++;
- index = SELECTED_CONTROLLER(channel).buffer_index;
- value32 = SELECTED_CONTROLLER(channel).buffer[index];
- index++;
-
- if (io_len >= 2) {
- value32 |= (SELECTED_CONTROLLER(channel).buffer[index] << 8);
+ if (io_len >= 2) {
+ value32 |= (controller->buffer[index] << 8);
index++;
- }
- if (io_len == 4) {
- value32 |= (SELECTED_CONTROLLER(channel).buffer[index] << 16);
- value32 |= (SELECTED_CONTROLLER(channel).buffer[index+1] << 24);
+ }
+
+ if (io_len == 4) {
+ value32 |= (controller->buffer[index] << 16);
+ value32 |= (controller->buffer[index+1] << 24);
index += 2;
- }
- SELECTED_CONTROLLER(channel).buffer_index = index;
-
- if (SELECTED_CONTROLLER(channel).buffer_index >= 512) {
+ }
- SELECTED_CONTROLLER(channel).status.drq = 0;
+ 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;
}
- GOTO_RETURN_VALUE;
-
- case 0xa0: //send packet cmd
+
+ return length;
+ }
+ case 0xa0: //send packet cmd
+ {
+ uint_t index = controller->buffer_index;
- index = SELECTED_CONTROLLER(channel).buffer_index;
- increment = 0;
- Ramdisk_Print("\t\tatapi.command(%02x), index(%d), cdrom.remaining_blocks(%d)\n", SELECTED_DRIVE(channel).atapi.command, index, SELECTED_DRIVE(channel).cdrom.remaining_blocks);
- // Load block if necessary
- if (index >= 2048) {
- if (index > 2048)
- RD_PANIC("\t\tindex > 2048 : 0x%x\n",index);
- switch (SELECTED_DRIVE(channel).atapi.command) {
- case 0x28: // read (10)
- case 0xa8: // read (12)
-
- if (!SELECTED_DRIVE(channel).cdrom.ready) {
- RD_PANIC("\t\tRead with CDROM not ready\n");
- }
- SELECTED_DRIVE(channel).cdrom.cd->ops.read_block(cdif, SELECTED_CONTROLLER(channel).buffer,
- SELECTED_DRIVE(channel).cdrom.next_lba);
- SELECTED_DRIVE(channel).cdrom.next_lba++;
- SELECTED_DRIVE(channel).cdrom.remaining_blocks--;
-
-
- if (!SELECTED_DRIVE(channel).cdrom.remaining_blocks)
- Ramdisk_Print("\t\tLast READ block loaded {CDROM}\n");
- else
- Ramdisk_Print("\t\tREAD block loaded (%d remaining) {CDROM}\n",
- SELECTED_DRIVE(channel).cdrom.remaining_blocks);
-
- // one block transfered, start at beginning
- index = 0;
- break;
-
- default: // no need to load a new block
- break;
+
+ 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;
}
+ }
+
- value32 = SELECTED_CONTROLLER(channel).buffer[index+increment];
+ /*
+ increment = 0;
+ value32 = controller->buffer[index + increment];
increment++;
+
if (io_len >= 2) {
- value32 |= (SELECTED_CONTROLLER(channel).buffer[index+increment] << 8);
- increment++;
+ value32 |= (controller->buffer[index + increment] << 8);
+ increment++;
}
+
if (io_len == 4) {
- value32 |= (SELECTED_CONTROLLER(channel).buffer[index+increment] << 16);
- value32 |= (SELECTED_CONTROLLER(channel).buffer[index+increment+1] << 24);
- increment += 2;
+ value32 |= (controller->buffer[index + increment] << 16);
+ value32 |= (controller->buffer[index + increment + 1] << 24);
+ increment += 2;
}
- SELECTED_CONTROLLER(channel).buffer_index = index + increment;
- SELECTED_CONTROLLER(channel).drq_index += increment;
+
+ 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 (SELECTED_CONTROLLER(channel).drq_index >= (unsigned)SELECTED_DRIVE(channel).atapi.drq_bytes) {
- SELECTED_CONTROLLER(channel).status.drq = 0;
- SELECTED_CONTROLLER(channel).drq_index = 0;
+ if (drive->atapi.total_bytes_remaining > 0) {
+ // one or more blocks remaining (works only for single block commands)
- SELECTED_DRIVE(channel).atapi.total_bytes_remaining -= SELECTED_DRIVE(channel).atapi.drq_bytes;
+ 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;
- if (SELECTED_DRIVE(channel).atapi.total_bytes_remaining > 0) {
- // one or more blocks remaining (works only for single block commands)
-
- Ramdisk_Print("\t\tPACKET drq bytes read\n");
- SELECTED_CONTROLLER(channel).interrupt_reason.i_o = 1;
- SELECTED_CONTROLLER(channel).status.busy = 0;
- SELECTED_CONTROLLER(channel).status.drq = 1;
- SELECTED_CONTROLLER(channel).interrupt_reason.c_d = 0;
-
- // set new byte count if last block
- if (SELECTED_DRIVE(channel).atapi.total_bytes_remaining < SELECTED_CONTROLLER(channel).byte_count) {
- SELECTED_CONTROLLER(channel).byte_count = SELECTED_DRIVE(channel).atapi.total_bytes_remaining;
- }
- SELECTED_DRIVE(channel).atapi.drq_bytes = SELECTED_CONTROLLER(channel).byte_count;
-
- rd_raise_interrupt(channels, channel);
- } else {
- // all bytes read
- Ramdisk_Print("\t\tPACKET all bytes read\n");
- SELECTED_CONTROLLER(channel).interrupt_reason.i_o = 1;
- SELECTED_CONTROLLER(channel).interrupt_reason.c_d = 1;
- SELECTED_CONTROLLER(channel).status.drive_ready = 1;
- SELECTED_CONTROLLER(channel).interrupt_reason.rel = 0;
- SELECTED_CONTROLLER(channel).status.busy = 0;
- SELECTED_CONTROLLER(channel).status.drq = 0;
- SELECTED_CONTROLLER(channel).status.err = 0;
-
- rd_raise_interrupt(channels, channel);
+ // 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);
}
- GOTO_RETURN_VALUE;
- break;
-
- default:
- Ramdisk_Print("\t\tread need support more command: %02x\n", SELECTED_CONTROLLER(channel).current_command);
+ }
+ return length;
break;
}
- ///////////////////////////////////////////
-
- case 0x01: // hard disk error register 0x1f1
- SELECTED_CONTROLLER(channel).status.err = 0;
- value8 = (!SELECTED_IS_PRESENT(channel)) ? 0 : SELECTED_CONTROLLER(channel).error_register;
- goto return_value8;
- break;
- case 0x02: // hard disk sector count / interrupt reason 0x1f2
- value8 = (!SELECTED_IS_PRESENT(channel)) ? 0 : SELECTED_CONTROLLER(channel).sector_count;
- goto return_value8;
- break;
- case 0x03: // sector number 0x1f3
- value8 = (!SELECTED_IS_PRESENT(channel)) ? 0 : SELECTED_CONTROLLER(channel).sector_no;
- goto return_value8;
- case 0x04: // 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
- value8 = (!ANY_IS_PRESENT(channel)) ? 0 : (SELECTED_CONTROLLER(channel).cylinder_no & 0x00ff);
- goto return_value8;
- case 0x05: // 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
- value8 = (!ANY_IS_PRESENT(channel)) ? 0 : SELECTED_CONTROLLER(channel).cylinder_no >> 8;
- goto return_value8;
-
- case 0x06: // 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
- value8 = (1 << 7) |
- ((SELECTED_CONTROLLER(channel).lba_mode>0) << 6) |
- (1 << 5) | // 01b = 512 sector size
- (channels[channel].drive_select << 4) |
- (SELECTED_CONTROLLER(channel).head_no << 0);
- goto return_value8;
+ default:
+ Ramdisk_Print("\t\tread need support more command: %02x\n", controller->current_command);
break;
- //CONTROLLER(channel,0).lba_mode
+ }
+
+ return -1;
+}
+
+
+
+
+static int write_data_port(ushort_t port, void * src, uint_t length, struct vm_device * dev) {
+ struct ramdisk_t * ramdisk = (struct ramdisk_t *)(dev->private_data);
+ struct channel_t * channel = NULL;
+ struct drive_t * drive = NULL;
+ struct controller_t * controller = NULL;
+
+ if (is_primary_port(ramdisk, port)) {
+ channel = &(ramdisk->channels[0]);
+ } else if (is_secondary_port(ramdisk, port)) {
+ channel = &(ramdisk->channels[1]);
+ } else {
+ PrintError("Invalid Port: %d\n", port);
+ return -1;
+ }
+
+ drive = get_selected_drive(channel);
+ controller = &(drive->controller);
+
+ 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 0x07: // Hard Disk Status 0x1f7
- case 0x16: // Hard Disk Alternate Status 0x3f6
- if (!ANY_IS_PRESENT(channel)) {
- // (mch) Just return zero for these registers
- value8 = 0;
- } else {
- value8 = (
- (SELECTED_CONTROLLER(channel).status.busy << 7) |
- (SELECTED_CONTROLLER(channel).status.drive_ready << 6) |
- (SELECTED_CONTROLLER(channel).status.write_fault << 5) |
- (SELECTED_CONTROLLER(channel).status.seek_complete << 4) |
- (SELECTED_CONTROLLER(channel).status.drq << 3) |
- (SELECTED_CONTROLLER(channel).status.corrected_data << 2) |
- (SELECTED_CONTROLLER(channel).status.index_pulse << 1) |
- (SELECTED_CONTROLLER(channel).status.err) );
- SELECTED_CONTROLLER(channel).status.index_pulse_count++;
- SELECTED_CONTROLLER(channel).status.index_pulse = 0;
- if (SELECTED_CONTROLLER(channel).status.index_pulse_count >= INDEX_PULSE_CYCLE) {
- SELECTED_CONTROLLER(channel).status.index_pulse = 1;
- SELECTED_CONTROLLER(channel).status.index_pulse_count = 0;
- }
- }
- if (port == 0x07) {
- rd_lower_irq((struct vm_device *)(ramdisk_state->private_data), channels[channel].irq);
- }
- goto return_value8;
- break;
+ case 0xa0: // PACKET
- case 0x17: // 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
- value8 = 0xff;
- goto return_value8;
- break;
+ handle_atapi_packet_command(dev, channel, *(ushort_t *)src);
+
+ return length;
default:
- RD_PANIC("hard drive: io read to address %x unsupported\n",
- (unsigned) address);
-
+ 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 ((port == SEC_CMD_PORT) || (port == PRI_CMD_PORT)) {
+ rd_lower_irq(dev, channel->irq);
}
- Ramdisk_Print("\t\tError: hard drive: shouldnt get here!\n");
+ 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;
+ }
+
+ 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);
+
+
+ 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;
+ }
+ 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;
+ }
+ 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)
-return_value32:
- Ramdisk_Print("\t\t32-bit read from %04x = %08x {%s}\n",
- (unsigned) address, value32, SELECTED_TYPE_STRING(channel));
- return value32;
+ 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;
- return_value16:
- Ramdisk_Print("\t\t16-bit read from %04x = %04x {%s}\n",
- (unsigned) address, value16, SELECTED_TYPE_STRING(channel));
- return value16;
+ 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);
- return_value8:
- Ramdisk_Print("\t\t8-bit read from %x = %02x {%s}\n",
- (unsigned) address, value8, SELECTED_TYPE_STRING(channel));
- return value8;
+ 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
-void rd_write_handler(struct channel_t *channels, Bit32u address,
- Bit32u value, unsigned io_len)
-{
+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;
- // off_t logical_sector;
- // off_t ret;
- rd_bool prev_control_reset;
- Bit32u id;
- int toc_length;
+ if (length != 1) {
+ PrintError("Invalid Status port read length: %d (port=%d)\n", length, port);
+ return -1;
+ }
- Bit8u channel = MAX_ATA_CHANNEL;
- Bit32u port = 0xff; // undefined
+ 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("[rd_write_handler]\n");
- // Bit8u atapi_command;
- //int alloc_length;
- for (channel=0; channel<MAX_ATA_CHANNEL; channel++) {
- if ((address & 0xfff8) == channels[channel].ioaddr1) {
- port = address - channels[channel].ioaddr1;
+ 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;
}
- else if ((address & 0xfff8) == channels[channel].ioaddr2) {
- port = address - channels[channel].ioaddr2 + 0x10;
+
+ 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;
- if (channel == MAX_ATA_CHANNEL) {
- if (address != 0x03f6) {
- RD_PANIC("Panic: write: unable to find ATA channel, ioport=0x%04x\n", address);
- } else {
- channel = 0;
- port = address - 0x03e0;
+ 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;
}
- Ramdisk_Print("[W_handler] IO write to %x = %02x, channel = %d\n", (unsigned) address, (unsigned) value, channel);
+ 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;
+ }
+}
- struct cdrom_interface *cdif = SELECTED_DRIVE(channel).cdrom.cd;
- switch (port) {
- case 0x00: // 0x1f0
- Ramdisk_Print("\t\twrite port 170\n");
- //////////////////////////////////////////////////////////
- switch (SELECTED_CONTROLLER(channel).current_command) {
- case 0x30: // WRITE SECTORS
- RD_PANIC("\t\tneed to implement 0x30(write sector) to port 0x170\n");
+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);
+ }
- case 0xa0: // PACKET
- if (SELECTED_CONTROLLER(channel).buffer_index >= PACKET_SIZE)
- RD_PANIC("IO write(0x%04x): buffer_index >= PACKET_SIZE", address);
- SELECTED_CONTROLLER(channel).buffer[SELECTED_CONTROLLER(channel).buffer_index] = value;
- SELECTED_CONTROLLER(channel).buffer[SELECTED_CONTROLLER(channel).buffer_index+1] = (value >> 8);
- SELECTED_CONTROLLER(channel).buffer_index += 2;
+ 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 packet completely writtten */
- if (SELECTED_CONTROLLER(channel).buffer_index >= PACKET_SIZE) {
- // complete command received
- Bit8u atapi_command = SELECTED_CONTROLLER(channel).buffer[0];
-
- Ramdisk_Print("\t\tcdrom: ATAPI command 0x%x started\n", atapi_command);
+
+ 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;
+ }
- switch (atapi_command) {
- case 0x00: // test unit ready
- if (SELECTED_DRIVE(channel).cdrom.ready) {
- rd_atapi_cmd_nop(channels, channel);
- } else {
- rd_atapi_cmd_error(channels, channel, SENSE_NOT_READY, ASC_MEDIUM_NOT_PRESENT);
- }
- rd_raise_interrupt(channels, channel);
- break;
-
- case 0x03: { // request sense
- int alloc_length = SELECTED_CONTROLLER(channel).buffer[4];
- rd_init_send_atapi_command(channels, channel, atapi_command, 18, alloc_length, false);
-
- // sense data
- SELECTED_CONTROLLER(channel).buffer[0] = 0x70 | (1 << 7);
- SELECTED_CONTROLLER(channel).buffer[1] = 0;
- SELECTED_CONTROLLER(channel).buffer[2] = SELECTED_DRIVE(channel).sense.sense_key;
- SELECTED_CONTROLLER(channel).buffer[3] = SELECTED_DRIVE(channel).sense.information.arr[0];
- SELECTED_CONTROLLER(channel).buffer[4] = SELECTED_DRIVE(channel).sense.information.arr[1];
- SELECTED_CONTROLLER(channel).buffer[5] = SELECTED_DRIVE(channel).sense.information.arr[2];
- SELECTED_CONTROLLER(channel).buffer[6] = SELECTED_DRIVE(channel).sense.information.arr[3];
- SELECTED_CONTROLLER(channel).buffer[7] = 17-7;
- SELECTED_CONTROLLER(channel).buffer[8] = SELECTED_DRIVE(channel).sense.specific_inf.arr[0];
- SELECTED_CONTROLLER(channel).buffer[9] = SELECTED_DRIVE(channel).sense.specific_inf.arr[1];
- SELECTED_CONTROLLER(channel).buffer[10] = SELECTED_DRIVE(channel).sense.specific_inf.arr[2];
- SELECTED_CONTROLLER(channel).buffer[11] = SELECTED_DRIVE(channel).sense.specific_inf.arr[3];
- SELECTED_CONTROLLER(channel).buffer[12] = SELECTED_DRIVE(channel).sense.asc;
- SELECTED_CONTROLLER(channel).buffer[13] = SELECTED_DRIVE(channel).sense.ascq;
- SELECTED_CONTROLLER(channel).buffer[14] = SELECTED_DRIVE(channel).sense.fruc;
- SELECTED_CONTROLLER(channel).buffer[15] = SELECTED_DRIVE(channel).sense.key_spec.arr[0];
- SELECTED_CONTROLLER(channel).buffer[16] = SELECTED_DRIVE(channel).sense.key_spec.arr[1];
- SELECTED_CONTROLLER(channel).buffer[17] = SELECTED_DRIVE(channel).sense.key_spec.arr[2];
-
- rd_ready_to_send_atapi(channels, channel);
- }
- break;
-
- case 0x1b: { // start stop unit
- //bx_bool Immed = (SELECTED_CONTROLLER(channel).buffer[1] >> 0) & 1;
- rd_bool LoEj = (SELECTED_CONTROLLER(channel).buffer[4] >> 1) & 1;
- rd_bool Start = (SELECTED_CONTROLLER(channel).buffer[4] >> 0) & 1;
-
- if (!LoEj && !Start) { // stop the disc
- RD_ERROR("FIXME: Stop disc not implemented\n");
- rd_atapi_cmd_nop(channels, channel);
- rd_raise_interrupt(channels, channel);
- } else if (!LoEj && Start) { // start (spin up) the disc
-
- SELECTED_DRIVE(channel).cdrom.cd->ops.start_cdrom(cdif);
-
- RD_ERROR("FIXME: ATAPI start disc not reading TOC\n");
- rd_atapi_cmd_nop(channels, channel);
- rd_raise_interrupt(channels, channel);
- } else if (LoEj && !Start) { // Eject the disc
- rd_atapi_cmd_nop(channels, channel);
-
- if (SELECTED_DRIVE(channel).cdrom.ready) {
+ return length;
+}
- SELECTED_DRIVE(channel).cdrom.cd->ops.eject_cdrom(cdif);
- SELECTED_DRIVE(channel).cdrom.ready = 0;
- //bx_options.atadevice[channel][SLAVE_SELECTED(channel)].Ostatus->set(EJECTED);
- //bx_gui->update_drive_status_buttons();
- }
- rd_raise_interrupt(channels, 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(channels, channel);
- rd_raise_interrupt(channels, channel);
- }
+
+
+
+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);
}
- break;
-
- case 0xbd: { // mechanism status
- uint16 alloc_length = rd_read_16bit(SELECTED_CONTROLLER(channel).buffer + 8);
-
- if (alloc_length == 0)
- RD_PANIC("Zero allocation length to MECHANISM STATUS not impl.\n");
-
- rd_init_send_atapi_command(channels, channel, atapi_command, 8, alloc_length, false);
-
- SELECTED_CONTROLLER(channel).buffer[0] = 0; // reserved for non changers
- SELECTED_CONTROLLER(channel).buffer[1] = 0; // reserved for non changers
-
- SELECTED_CONTROLLER(channel).buffer[2] = 0; // Current LBA (TODO!)
- SELECTED_CONTROLLER(channel).buffer[3] = 0; // Current LBA (TODO!)
- SELECTED_CONTROLLER(channel).buffer[4] = 0; // Current LBA (TODO!)
+
+ 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
- SELECTED_CONTROLLER(channel).buffer[5] = 1; // one slot
+ drive->cdrom.cd->ops.start_cdrom(drive->cdrom.cd);
- SELECTED_CONTROLLER(channel).buffer[6] = 0; // slot table length
- SELECTED_CONTROLLER(channel).buffer[7] = 0; // slot table length
+ 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);
- rd_ready_to_send_atapi(channels, 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 0x5a: { // mode sense
- uint16 alloc_length = rd_read_16bit(SELECTED_CONTROLLER(channel).buffer + 7);
-
- Bit8u PC = SELECTED_CONTROLLER(channel).buffer[2] >> 6;
- Bit8u PageCode = SELECTED_CONTROLLER(channel).buffer[2] & 0x3f;
-
- switch (PC) {
- case 0x0: // current values
+ 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(channels, channel, atapi_command, sizeof(struct error_recovery_t) + 8, alloc_length, false);
-
- rd_init_mode_sense_single(channels, channel, &SELECTED_DRIVE(channel).cdrom.current.error_recovery,
- sizeof(struct error_recovery_t));
- rd_ready_to_send_atapi(channels, channel);
- break;
-
+ {
+ 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(channels, channel, atapi_command, 28, alloc_length, false);
- rd_init_mode_sense_single(channels, channel, &SELECTED_CONTROLLER(channel).buffer[8], 28);
- SELECTED_CONTROLLER(channel).buffer[8] = 0x2a;
- SELECTED_CONTROLLER(channel).buffer[9] = 0x12;
- SELECTED_CONTROLLER(channel).buffer[10] = 0x00;
- SELECTED_CONTROLLER(channel).buffer[11] = 0x00;
- // Multisession, Mode 2 Form 2, Mode 2 Form 1
- SELECTED_CONTROLLER(channel).buffer[12] = 0x70;
- SELECTED_CONTROLLER(channel).buffer[13] = (3 << 5);
- SELECTED_CONTROLLER(channel).buffer[14] = (unsigned char)
- (1 |
- (SELECTED_DRIVE(channel).cdrom.locked ? (1 << 1) : 0) |
- (1 << 3) |
- (1 << 5));
- SELECTED_CONTROLLER(channel).buffer[15] = 0x00;
- SELECTED_CONTROLLER(channel).buffer[16] = (706 >> 8) & 0xff;
- SELECTED_CONTROLLER(channel).buffer[17] = 706 & 0xff;
- SELECTED_CONTROLLER(channel).buffer[18] = 0;
- SELECTED_CONTROLLER(channel).buffer[19] = 2;
- SELECTED_CONTROLLER(channel).buffer[20] = (512 >> 8) & 0xff;
- SELECTED_CONTROLLER(channel).buffer[21] = 512 & 0xff;
- SELECTED_CONTROLLER(channel).buffer[22] = (706 >> 8) & 0xff;
- SELECTED_CONTROLLER(channel).buffer[23] = 706 & 0xff;
- SELECTED_CONTROLLER(channel).buffer[24] = 0;
- SELECTED_CONTROLLER(channel).buffer[25] = 0;
- SELECTED_CONTROLLER(channel).buffer[26] = 0;
- SELECTED_CONTROLLER(channel).buffer[27] = 0;
- rd_ready_to_send_atapi(channels, channel);
- break;
-
+ {
+ 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(channels, channel, SENSE_ILLEGAL_REQUEST,
- ASC_INV_FIELD_IN_CMD_PACKET);
- rd_raise_interrupt(channels, 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(channels, channel, SENSE_ILLEGAL_REQUEST,
- ASC_INV_FIELD_IN_CMD_PACKET);
- rd_raise_interrupt(channels, channel);
+ {
+ 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;
}
- break;
-
- case 0x1: // changeable values
+ 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
- RD_ERROR("cdrom: MODE SENSE (chg), code=%x not implemented yet\n",
- PageCode);
- rd_atapi_cmd_error(channels, channel, SENSE_ILLEGAL_REQUEST,
- ASC_INV_FIELD_IN_CMD_PACKET);
- rd_raise_interrupt(channels, channel);
+ {
+ 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;
-
- 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(channels, channel, SENSE_ILLEGAL_REQUEST,
- ASC_INV_FIELD_IN_CMD_PACKET);
- rd_raise_interrupt(channels, 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
- RD_PANIC("cdrom: MODE SENSE (dflt), code=%x\n",
- PageCode);
- break;
-
+ {
+ 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
- Ramdisk_Print("\t\tcdrom: MODE SENSE PC=%x, PageCode=%x, not implemented by device\n",
- PC, PageCode);
- rd_atapi_cmd_error(channels, channel, SENSE_ILLEGAL_REQUEST,
- ASC_INV_FIELD_IN_CMD_PACKET);
- rd_raise_interrupt(channels, channel);
- break;
+ {
+ // 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;
}
- break;
-
case 0x3: // saved values not implemented
- rd_atapi_cmd_error(channels, channel, SENSE_ILLEGAL_REQUEST, ASC_SAVING_PARAMETERS_NOT_SUPPORTED);
- rd_raise_interrupt(channels, channel);
- break;
-
+ {
+ 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;
+ {
+ RD_PANIC("Should not get here!\n");
+ break;
+ }
}
+ break;
}
- break;
-
- case 0x12: { // inquiry
- uint8 alloc_length = SELECTED_CONTROLLER(channel).buffer[4];
-
- rd_init_send_atapi_command(channels, channel, atapi_command, 36, alloc_length, false);
-
- SELECTED_CONTROLLER(channel).buffer[0] = 0x05; // CD-ROM
- SELECTED_CONTROLLER(channel).buffer[1] = 0x80; // Removable
- SELECTED_CONTROLLER(channel).buffer[2] = 0x00; // ISO, ECMA, ANSI version
- SELECTED_CONTROLLER(channel).buffer[3] = 0x21; // ATAPI-2, as specified
- SELECTED_CONTROLLER(channel).buffer[4] = 31; // additional length (total 36)
- SELECTED_CONTROLLER(channel).buffer[5] = 0x00; // reserved
- SELECTED_CONTROLLER(channel).buffer[6] = 0x00; // reserved
- SELECTED_CONTROLLER(channel).buffer[7] = 0x00; // reserved
-
- // Vendor ID
- const char* vendor_id = "VTAB ";
- int i;
- for (i = 0; i < 8; i++)
- SELECTED_CONTROLLER(channel).buffer[8+i] = vendor_id[i];
-
- // Product ID
- const char* product_id = "Turbo CD-ROM ";
- for (i = 0; i < 16; i++)
- SELECTED_CONTROLLER(channel).buffer[16+i] = product_id[i];
-
- // Product Revision level
- const char* rev_level = "1.0 ";
- for (i = 0; i < 4; i++)
- SELECTED_CONTROLLER(channel).buffer[32+i] = rev_level[i];
-
- rd_ready_to_send_atapi(channels, channel);
- }
- break;
-
- case 0x25: { // read cd-rom capacity
- // no allocation length???
- rd_init_send_atapi_command(channels, channel, atapi_command, 8, 8, false);
-
- if (SELECTED_DRIVE(channel).cdrom.ready) {
- uint32 capacity = SELECTED_DRIVE(channel).cdrom.capacity;
- Ramdisk_Print("\t\tCapacity is %d sectors (%d bytes)\n", capacity, capacity * 2048);
- SELECTED_CONTROLLER(channel).buffer[0] = (capacity >> 24) & 0xff;
- SELECTED_CONTROLLER(channel).buffer[1] = (capacity >> 16) & 0xff;
- SELECTED_CONTROLLER(channel).buffer[2] = (capacity >> 8) & 0xff;
- SELECTED_CONTROLLER(channel).buffer[3] = (capacity >> 0) & 0xff;
- SELECTED_CONTROLLER(channel).buffer[4] = (2048 >> 24) & 0xff;
- SELECTED_CONTROLLER(channel).buffer[5] = (2048 >> 16) & 0xff;
- SELECTED_CONTROLLER(channel).buffer[6] = (2048 >> 8) & 0xff;
- SELECTED_CONTROLLER(channel).buffer[7] = (2048 >> 0) & 0xff;
- rd_ready_to_send_atapi(channels, channel);
- } else {
- rd_atapi_cmd_error(channels, channel, SENSE_NOT_READY, ASC_MEDIUM_NOT_PRESENT);
- rd_raise_interrupt(channels, channel);
- }
+ 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];
}
- break;
-
- case 0xbe: { // read cd
- if (SELECTED_DRIVE(channel).cdrom.ready) {
- RD_ERROR("Read CD with CD present not implemented\n");
- rd_atapi_cmd_error(channels, channel, SENSE_ILLEGAL_REQUEST, ASC_INV_FIELD_IN_CMD_PACKET);
- rd_raise_interrupt(channels, channel);
- } else {
- rd_atapi_cmd_error(channels, channel, SENSE_NOT_READY, ASC_MEDIUM_NOT_PRESENT);
- rd_raise_interrupt(channels, channel);
- }
+
+ // Product ID
+ const char* product_id = "Turbo CD-ROM ";
+ for (i = 0; i < 16; i++) {
+ controller->buffer[16+i] = product_id[i];
}
- break;
-
- case 0x43: { // read toc
- if (SELECTED_DRIVE(channel).cdrom.ready) {
-
- bool msf = (SELECTED_CONTROLLER(channel).buffer[1] >> 1) & 1;
- uint8 starting_track = SELECTED_CONTROLLER(channel).buffer[6];
-
- uint16 alloc_length = rd_read_16bit(SELECTED_CONTROLLER(channel).buffer + 7);
-
- uint8 format = (SELECTED_CONTROLLER(channel).buffer[9] >> 6);
- int i;
- switch (format) {
- case 0:
-
- if (!(SELECTED_DRIVE(channel).cdrom.cd->ops.read_toc(cdif, SELECTED_CONTROLLER(channel).buffer,
- &toc_length, msf, starting_track))) {
- rd_atapi_cmd_error(channels, channel, SENSE_ILLEGAL_REQUEST,
- ASC_INV_FIELD_IN_CMD_PACKET);
- rd_raise_interrupt(channels, channel);
- } else {
- rd_init_send_atapi_command(channels, channel, atapi_command, toc_length, alloc_length, false);
- rd_ready_to_send_atapi(channels, channel);
- }
- break;
-
- case 1:
- // multi session stuff. we ignore this and emulate a single session only
- rd_init_send_atapi_command(channels, channel, atapi_command, 12, alloc_length, false);
-
- SELECTED_CONTROLLER(channel).buffer[0] = 0;
- SELECTED_CONTROLLER(channel).buffer[1] = 0x0a;
- SELECTED_CONTROLLER(channel).buffer[2] = 1;
- SELECTED_CONTROLLER(channel).buffer[3] = 1;
- for (i = 0; i < 8; i++)
- SELECTED_CONTROLLER(channel).buffer[4+i] = 0;
-
- rd_ready_to_send_atapi(channels, channel);
- break;
-
- case 2:
- default:
- RD_PANIC("(READ TOC) Format %d not supported\n", format);
- break;
- }
- } else {
- rd_atapi_cmd_error(channels, channel, SENSE_NOT_READY, ASC_MEDIUM_NOT_PRESENT);
- rd_raise_interrupt(channels, channel);
- }
+
+ // Product Revision level
+ const char* rev_level = "1.0 ";
+ for (i = 0; i < 4; i++) {
+ controller->buffer[32 + i] = rev_level[i];
}
- break;
-
- case 0x28: // read (10)
- case 0xa8: // read (12)
- {
+
+ 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);
- uint32 transfer_length;
- if (atapi_command == 0x28)
- transfer_length = rd_read_16bit(SELECTED_CONTROLLER(channel).buffer + 7);
- else
- transfer_length = rd_read_32bit(SELECTED_CONTROLLER(channel).buffer + 6);
-
- uint32 lba = rd_read_32bit(SELECTED_CONTROLLER(channel).buffer + 2);
+ 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 (!SELECTED_DRIVE(channel).cdrom.ready) {
- rd_atapi_cmd_error(channels, channel, SENSE_NOT_READY, ASC_MEDIUM_NOT_PRESENT);
- rd_raise_interrupt(channels, channel);
- break;
+ 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;
- if (transfer_length == 0) {
- rd_atapi_cmd_nop(channels, channel);
- rd_raise_interrupt(channels, channel);
- Ramdisk_Print("\t\tREAD(%d) with transfer length 0, ok\n", atapi_command==0x28?10:12);
- 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);
- if (lba + transfer_length > SELECTED_DRIVE(channel).cdrom.capacity) {
- rd_atapi_cmd_error(channels, channel, SENSE_ILLEGAL_REQUEST, ASC_LOGICAL_BLOCK_OOR);
- rd_raise_interrupt(channels, channel);
- break;
+ 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;
- 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(channels, channel, atapi_command, transfer_length * 2048,
- transfer_length * 2048, true);
- SELECTED_DRIVE(channel).cdrom.remaining_blocks = transfer_length;
- SELECTED_DRIVE(channel).cdrom.next_lba = lba;
- rd_ready_to_send_atapi(channels, channel);
+ 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;
-
- case 0x2b: { // seek
- uint32 lba = rd_read_32bit(SELECTED_CONTROLLER(channel).buffer + 2);
- if (!SELECTED_DRIVE(channel).cdrom.ready) {
- rd_atapi_cmd_error(channels, channel, SENSE_NOT_READY, ASC_MEDIUM_NOT_PRESENT);
- rd_raise_interrupt(channels, channel);
- break;
- }
-
- if (lba > SELECTED_DRIVE(channel).cdrom.capacity) {
- rd_atapi_cmd_error(channels, channel, SENSE_ILLEGAL_REQUEST, ASC_LOGICAL_BLOCK_OOR);
- rd_raise_interrupt(channels, channel);
- break;
- }
- Ramdisk_Print("\t\tcdrom: SEEK (ignored)\n");
- rd_atapi_cmd_nop(channels, channel);
- rd_raise_interrupt(channels, channel);
}
+
+ 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;
-
- case 0x1e: { // prevent/allow medium removal
- if (SELECTED_DRIVE(channel).cdrom.ready) {
- SELECTED_DRIVE(channel).cdrom.locked = SELECTED_CONTROLLER(channel).buffer[4] & 1;
- rd_atapi_cmd_nop(channels, channel);
- } else {
- rd_atapi_cmd_error(channels, channel, SENSE_NOT_READY, ASC_MEDIUM_NOT_PRESENT);
- }
- rd_raise_interrupt(channels, channel);
}
+
+ 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;
-
- 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 data_format = get_packet_byte(channel,3);
- uint8 track_number = get_packet_byte(channel,6);
- uint16 alloc_length = get_packet_word(channel,7);
- UNUSED(msf);
- UNUSED(data_format);
- UNUSED(track_number);
-
- if (!SELECTED_DRIVE(channel).cdrom.ready) {
- rd_atapi_cmd_error(channels, channel, SENSE_NOT_READY, ASC_MEDIUM_NOT_PRESENT);
- rd_raise_interrupt(channels, channel);
- } else {
- SELECTED_CONTROLLER(channel).buffer[0] = 0;
- SELECTED_CONTROLLER(channel).buffer[1] = 0; // audio not supported
- SELECTED_CONTROLLER(channel).buffer[2] = 0;
- SELECTED_CONTROLLER(channel).buffer[3] = 0;
+ }
- int ret_len = 4; // header size
+ Ramdisk_Print("\t\tcdrom: READ (%d) LBA=%d LEN=%d\n", atapi_command==0x28?10:12, lba, transfer_length);
- if (sub_q) { // !sub_q == header only
- RD_ERROR("Read sub-channel with SubQ not implemented\n");
- rd_atapi_cmd_error(channels, channel, SENSE_ILLEGAL_REQUEST,
- ASC_INV_FIELD_IN_CMD_PACKET);
- rd_raise_interrupt(channels, channel);
- }
-
- rd_init_send_atapi_command(channels, channel, atapi_command, ret_len, alloc_length, false);
- rd_ready_to_send_atapi(channels, channel);
- }
- }
+ // 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;
-
- case 0x51: { // read disc info
- // no-op to keep the Linux CD-ROM driver happy
- rd_atapi_cmd_error(channels, channel, SENSE_ILLEGAL_REQUEST, ASC_INV_FIELD_IN_CMD_PACKET);
- rd_raise_interrupt(channels, 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: // ???
- RD_ERROR("ATAPI command 0x%x not implemented yet\n",
- atapi_command);
- rd_atapi_cmd_error(channels, channel, SENSE_ILLEGAL_REQUEST, ASC_INV_FIELD_IN_CMD_PACKET);
- rd_raise_interrupt(channels, channel);
- break;
- default:
- RD_PANIC("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(channels, channel, SENSE_ILLEGAL_REQUEST, ASC_INV_FIELD_IN_CMD_PACKET);
- rd_raise_interrupt(channels, channel);
+
+ if (lba > drive->cdrom.capacity) {
+ rd_atapi_cmd_error(dev, channel, SENSE_ILLEGAL_REQUEST, ASC_LOGICAL_BLOCK_OOR);
+ rd_raise_interrupt(dev, channel);
break;
}
- }
-
- break;
-
-
- default:
- RD_PANIC("\t\tIO write(0x%x): current command is %02xh\n", address,
- (unsigned) SELECTED_CONTROLLER(channel).current_command);
- }
+
+ PrintDebug("\t\tcdrom: SEEK (ignored)\n");
-/////////////////////////////////////////////////////////
- break;
- case 0x01: // hard disk write precompensation 0x1f1
- WRITE_FEATURES(channel,value);
- break;
+ rd_atapi_cmd_nop(dev, channel);
+ rd_raise_interrupt(dev, channel);
- case 0x02: // hard disk sector count 0x1f2
- WRITE_SECTOR_COUNT(channel,value);
- break;
-
- case 0x03: // hard disk sector number 0x1f3
- WRITE_SECTOR_NUMBER(channel,value);
- break;
-
- case 0x04: // hard disk cylinder low 0x1f4
- WRITE_CYLINDER_LOW(channel,value);
- break;
-
- case 0x05: // hard disk cylinder high 0x1f5
- WRITE_CYLINDER_HIGH(channel,value);
- break;
-
- case 0x06: // 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
-
- if ( (value & 0xa0) != 0xa0 ) // 1x1xxxxx
- Ramdisk_Print("\t\tIO write 0x%x (%02x): not 1x1xxxxxb\n", address, (unsigned) value);
-
- Bit32u drvsel = channels[channel].drive_select = (value >> 4) & 0x01;
- WRITE_HEAD_NO(channel,value & 0xf);
- if (SELECTED_CONTROLLER(channel).lba_mode == 0 && ((value >> 6) & 1) == 1){
- Ramdisk_Print("\t\tenabling LBA mode\n");
+ 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);
}
- WRITE_LBA_MODE(channel,(value >> 6) & 1);
- SELECTED_DRIVE(channel).cdrom.cd->lba = (value >> 6) & 1;
-
-
- if (!SELECTED_IS_PRESENT(channel)) {
- Ramdisk_Print ("\t\tError: device set to %d which does not exist! channel = %d\n",drvsel, channel);
- SELECTED_CONTROLLER(channel).error_register = 0x04; // aborted
- SELECTED_CONTROLLER(channel).status.err = 1;
- }
-
- break;
-
-
- case 0x07: // hard disk command 0x1f7
-
- switch (value) {
- // ATAPI commands
- case 0xa1: // IDENTIFY PACKET DEVICE
- if (SELECTED_IS_CD(channel)) {
- SELECTED_CONTROLLER(channel).current_command = value;
- SELECTED_CONTROLLER(channel).error_register = 0;
-
- SELECTED_CONTROLLER(channel).status.busy = 0;
- SELECTED_CONTROLLER(channel).status.drive_ready = 1;
- SELECTED_CONTROLLER(channel).status.write_fault = 0;
- SELECTED_CONTROLLER(channel).status.drq = 1;
- SELECTED_CONTROLLER(channel).status.err = 0;
-
- SELECTED_CONTROLLER(channel).status.seek_complete = 1;
- SELECTED_CONTROLLER(channel).status.corrected_data = 0;
-
- SELECTED_CONTROLLER(channel).buffer_index = 0;
- rd_raise_interrupt(channels, channel);
- rd_identify_ATAPI_drive(channels, channel);
- } else {
- rd_command_aborted(channels, channel, 0xa1);
- }
- break;
-
- case 0xa0: // SEND PACKET (atapi)
- if (SELECTED_IS_CD(channel)) {
- // PACKET
- if (SELECTED_CONTROLLER(channel).features & (1 << 0))
- RD_PANIC("\t\tPACKET-DMA not supported");
- if (SELECTED_CONTROLLER(channel).features & (1 << 1))
- RD_PANIC("\t\tPACKET-overlapped not supported");
-
- // We're already ready!
- SELECTED_CONTROLLER(channel).sector_count = 1;
- SELECTED_CONTROLLER(channel).status.busy = 0;
- SELECTED_CONTROLLER(channel).status.write_fault = 0;
- // serv bit??
- SELECTED_CONTROLLER(channel).status.drq = 1;
- SELECTED_CONTROLLER(channel).status.err = 0;
-
- // NOTE: no interrupt here
- SELECTED_CONTROLLER(channel).current_command = value;
- SELECTED_CONTROLLER(channel).buffer_index = 0;
- } else {
- rd_command_aborted (channels, channel, 0xa0);
- }
- break;
- default:
- Ramdisk_Print("\t\tneed translate command %2x\n", value);
- break;
- }//switch(value)
+ rd_raise_interrupt(dev, channel);
-
- case 0x16: // hard disk adapter control 0x3f6
- // (mch) Even if device 1 was selected, a write to this register
- // goes to device 0 (if device 1 is absent)
-
- prev_control_reset = SELECTED_CONTROLLER(channel).control.reset;
- channels[channel].drives[0].controller.control.reset = value & 0x04;
- channels[channel].drives[1].controller.control.reset = value & 0x04;
- // CGS: was: SELECTED_CONTROLLER(channel).control.disable_irq = value & 0x02;
- channels[channel].drives[0].controller.control.disable_irq = value & 0x02;
- channels[channel].drives[1].controller.control.disable_irq = value & 0x02;
-
- Ramdisk_Print("\t\tadpater control reg: reset controller = %d\n",
- (unsigned) (SELECTED_CONTROLLER(channel).control.reset) ? 1 : 0);
- Ramdisk_Print("\t\tadpater control reg: disable_irq(X) = %d\n",
- (unsigned) (SELECTED_CONTROLLER(channel).control.disable_irq) ? 1 : 0);
-
- if (!prev_control_reset && SELECTED_CONTROLLER(channel).control.reset) {
- // 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++) {
- CONTROLLER(channel,id).status.busy = 1;
- CONTROLLER(channel,id).status.drive_ready = 0;
- CONTROLLER(channel,id).reset_in_progress = 1;
-
- CONTROLLER(channel,id).status.write_fault = 0;
- CONTROLLER(channel,id).status.seek_complete = 1;
- CONTROLLER(channel,id).status.drq = 0;
- CONTROLLER(channel,id).status.corrected_data = 0;
- CONTROLLER(channel,id).status.err = 0;
-
- CONTROLLER(channel,id).error_register = 0x01; // diagnostic code: no error
-
- CONTROLLER(channel,id).current_command = 0x00;
- CONTROLLER(channel,id).buffer_index = 0;
-
- CONTROLLER(channel,id).sectors_per_block = 0x80;
- CONTROLLER(channel,id).lba_mode = 0;
-
- CONTROLLER(channel,id).control.disable_irq = 0;
- rd_lower_irq((struct vm_device *)(ramdisk_state->private_data), channels[channel].irq);
+ break;
}
- } else if (SELECTED_CONTROLLER(channel).reset_in_progress &&
- !SELECTED_CONTROLLER(channel).control.reset) {
- // Clear BSY and DRDY
- Ramdisk_Print("\t\tReset complete {%s}\n", SELECTED_TYPE_STRING(channel));
- for (id = 0; id < 2; id++) {
- CONTROLLER(channel,id).status.busy = 0;
- CONTROLLER(channel,id).status.drive_ready = 1;
- CONTROLLER(channel,id).reset_in_progress = 0;
+ 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);
- // Device signature
- if (DRIVE_IS_HD(channel,id)) {
- Ramdisk_Print("\t\tdrive %d/%d is harddrive\n", channel, id);
- CONTROLLER(channel,id).head_no = 0;
- CONTROLLER(channel,id).sector_count = 1;
- CONTROLLER(channel,id).sector_no = 1;
- CONTROLLER(channel,id).cylinder_no = 0;
+
+ /*
+ 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(channel,id).head_no = 0;
- CONTROLLER(channel,id).sector_count = 1;
- CONTROLLER(channel,id).sector_no = 1;
- CONTROLLER(channel,id).cylinder_no = 0xeb14;
+ 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;
}
- Ramdisk_Print("\t\ts[0].controller.control.disable_irq = %02x\n", (channels[channel].drives[0]).controller.control.disable_irq);
- Ramdisk_Print("\t\ts[1].controller.control.disable_irq = %02x\n", (channels[channel].drives[1]).controller.control.disable_irq);
- 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);
- default:
- RD_PANIC("\t\thard drive: io write to address %x = %02x\n",
- (unsigned) address, (unsigned) value);
+ 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;
- return;
+ // if (lazy) {
+ // // bias drq_bytes and total_bytes_remaining
+ // SELECTED_DRIVE(channel).atapi.drq_bytes += 2048;
+ // SELECTED_DRIVE(channel).atapi.total_bytes_remaining += 2048;
+ // }
}
-static
-void rd_identify_ATAPI_drive(struct channel_t *channels, Bit8u channel)
+
+ 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)
{
- unsigned i;
+ 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 ";
- SELECTED_DRIVE(channel).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++)
- SELECTED_DRIVE(channel).id_drive[i] = 0;
+ 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++) {
- SELECTED_DRIVE(channel).id_drive[10+i] = (serial_number[i*2] << 8) |
- serial_number[i*2 + 1];
+ drive->id_drive[10 + i] = ((serial_number[i * 2] << 8) |
+ (serial_number[(i * 2) + 1]));
}
- for (i = 20; i <= 22; i++)
- SELECTED_DRIVE(channel).id_drive[i] = 0;
-
+ for (i = 20; i <= 22; i++) {
+ drive->id_drive[i] = 0;
+ }
for (i = 0; i < strlen(firmware)/2; i++) {
- SELECTED_DRIVE(channel).id_drive[23+i] = (firmware[i*2] << 8) |
- firmware[i*2 + 1];
+ drive->id_drive[23 + i] = ((firmware[i * 2] << 8) |
+ (firmware[(i * 2) + 1]));
}
- V3_ASSERT((23+i) == 27);
+ V3_ASSERT((23 + i) == 27);
- for (i = 0; i < strlen((char *) SELECTED_MODEL(channel))/2; i++) {
- SELECTED_DRIVE(channel).id_drive[27+i] = (SELECTED_MODEL(channel)[i*2] << 8) |
- SELECTED_MODEL(channel)[i*2 + 1];
+ 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);
+ V3_ASSERT((27 + i) == 47);
- SELECTED_DRIVE(channel).id_drive[47] = 0;
- SELECTED_DRIVE(channel).id_drive[48] = 1; // 32 bits access
+ drive->id_drive[47] = 0;
+ drive->id_drive[48] = 1; // 32 bits access
- SELECTED_DRIVE(channel).id_drive[49] = (1 << 9); // LBA supported
+ drive->id_drive[49] = (1 << 9); // LBA supported
- SELECTED_DRIVE(channel).id_drive[50] = 0;
- SELECTED_DRIVE(channel).id_drive[51] = 0;
- SELECTED_DRIVE(channel).id_drive[52] = 0;
+ drive->id_drive[50] = 0;
+ drive->id_drive[51] = 0;
+ drive->id_drive[52] = 0;
- SELECTED_DRIVE(channel).id_drive[53] = 3; // words 64-70, 54-58 valid
+ drive->id_drive[53] = 3; // words 64-70, 54-58 valid
- for (i = 54; i <= 62; i++)
- SELECTED_DRIVE(channel).id_drive[i] = 0;
+ for (i = 54; i <= 62; i++) {
+ drive->id_drive[i] = 0;
+ }
// copied from CFA540A
- SELECTED_DRIVE(channel).id_drive[63] = 0x0103; // variable (DMA stuff)
- SELECTED_DRIVE(channel).id_drive[64] = 0x0001; // PIO
- SELECTED_DRIVE(channel).id_drive[65] = 0x00b4;
- SELECTED_DRIVE(channel).id_drive[66] = 0x00b4;
- SELECTED_DRIVE(channel).id_drive[67] = 0x012c;
- SELECTED_DRIVE(channel).id_drive[68] = 0x00b4;
-
- SELECTED_DRIVE(channel).id_drive[69] = 0;
- SELECTED_DRIVE(channel).id_drive[70] = 0;
- SELECTED_DRIVE(channel).id_drive[71] = 30; // faked
- SELECTED_DRIVE(channel).id_drive[72] = 30; // faked
- SELECTED_DRIVE(channel).id_drive[73] = 0;
- SELECTED_DRIVE(channel).id_drive[74] = 0;
-
- SELECTED_DRIVE(channel).id_drive[75] = 0;
-
- for (i = 76; i <= 79; i++)
- SELECTED_DRIVE(channel).id_drive[i] = 0;
-
- SELECTED_DRIVE(channel).id_drive[80] = 0x1e; // supports up to ATA/ATAPI-4
- SELECTED_DRIVE(channel).id_drive[81] = 0;
- SELECTED_DRIVE(channel).id_drive[82] = 0;
- SELECTED_DRIVE(channel).id_drive[83] = 0;
- SELECTED_DRIVE(channel).id_drive[84] = 0;
- SELECTED_DRIVE(channel).id_drive[85] = 0;
- SELECTED_DRIVE(channel).id_drive[86] = 0;
- SELECTED_DRIVE(channel).id_drive[87] = 0;
- SELECTED_DRIVE(channel).id_drive[88] = 0;
-
- for (i = 89; i <= 126; i++)
- SELECTED_DRIVE(channel).id_drive[i] = 0;
-
- SELECTED_DRIVE(channel).id_drive[127] = 0;
- SELECTED_DRIVE(channel).id_drive[128] = 0;
-
- for (i = 129; i <= 159; i++)
- SELECTED_DRIVE(channel).id_drive[i] = 0;
-
- for (i = 160; i <= 255; i++)
- SELECTED_DRIVE(channel).id_drive[i] = 0;
+ 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 = SELECTED_DRIVE(channel).id_drive[i];
- SELECTED_CONTROLLER(channel).buffer[i*2] = temp16 & 0x00ff;
- SELECTED_CONTROLLER(channel).buffer[i*2+1] = temp16 >> 8;
+ temp16 = drive->id_drive[i];
+ controller->buffer[i * 2] = temp16 & 0x00ff;
+ controller->buffer[i * 2 + 1] = temp16 >> 8;
}
return;
+
+
+
+
static
-void rd_raise_interrupt(struct channel_t *channels, Bit8u channel)
+void rd_init_mode_sense_single(struct vm_device * dev,
+ struct channel_t * channel, const void* src, int size)
{
- Bit32u irq;
- struct vm_device *dev;
+ struct drive_t * drive = &(channel->drives[channel->drive_select]);
+ struct controller_t * controller = &(drive->controller);
- Ramdisk_Print("[raise_interrupt] disable_irq = %02x\n", SELECTED_CONTROLLER(channel).control.disable_irq);
+ Ramdisk_Print("[rd_init_mode_sense_single]\n");
- if (!SELECTED_CONTROLLER(channel).control.disable_irq) {
- Ramdisk_Print("\t\traising interrupt\n");
- } else {
- Ramdisk_Print("\t\tNot raising interrupt\n");
- }
- if (!SELECTED_CONTROLLER(channel).control.disable_irq) {
- irq = channels[channel].irq;
- Ramdisk_Print("\t\tRaising interrupt %d {%s}\n\n", irq, SELECTED_TYPE_STRING(channel));
- // DEV_pic_raise_irq(irq);
- dev = (struct vm_device*) ramdisk_state->private_data;
- Ramdisk_Print("\t\tdev = %x\n", dev);
- dev->vm->vm_ops.raise_irq(dev->vm, irq);
- } else {
- Ramdisk_Print("\t\tirq is disabled\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
- return;
+ // Data
+ memcpy(controller->buffer + 8, src, size);
}
-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);
+
+
+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);
}
-/*
- * Public Routines
- */
-static
-int ramdisk_read_port(ushort_t port,
- void *src,
- uint_t length,
- struct vm_device *dev)
-{
- uint_t i;
- //Ramdisk_Print("[ramdisk_read_port] port = %x, length = %d\n", port, length);
- switch (length) {
- case 1:
- ((uchar_t*)src)[0] = rd_read_handler(ramdisk_state->channels, port, length);
- break;
- case 2:
- ((ushort_t*)src)[0] = rd_read_handler(ramdisk_state->channels, port, length);
- break;
- case 4:
- ((uint_t*)src)[0] = rd_read_handler(ramdisk_state->channels, port, length);
- break;
- default:
- for (i = 0; i < length; i++) {
- ((uchar_t*)src)[i] = rd_read_handler(ramdisk_state->channels, port, 1);
- }
- }//switch length
+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;
- return length;
}
-static
-int ramdisk_write_port(ushort_t port,
- void *src,
- uint_t length,
- struct vm_device *dev)
+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()
{
- //Ramdisk_Print("[ramdisk_write_port] port = %x, length = %d\n", port, length);
- /*
- uint_t i;
- for (i = 0; i < length; i++)
- Ramdisk_Print("\t\tsrc[%d] = 0x%02x\n", i, ((uchar_t*)src)[i]);
- */
+ struct ramdisk_t *ramdisk;
+ ramdisk = (struct ramdisk_t *)V3_Malloc(sizeof(struct ramdisk_t));
+ V3_ASSERT(ramdisk != NULL);
+
+ Ramdisk_Print("[create_ramdisk]\n");
- switch(length) {
- case 1:
- rd_write_handler(ramdisk_state->channels, port, *((uchar_t *)src), length);
- break;
- case 2:
- rd_write_handler(ramdisk_state->channels, port, *((ushort_t *)src), length);
- break;
- case 4:
- rd_write_handler(ramdisk_state->channels, port, *((uint_t *)src), length);
- break;
- default:
- rd_write_handler(ramdisk_state->channels, port, *((uchar_t *)src), length);
- break;
+ 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));
}
- return length;
+ 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)
-{
+
+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_dectect()\n");
+ Ramdisk_Print("ata_detect()\n");
break;
case 0x3e9:
}
-int ramdisk_read_port_ignore(ushort_t port,
- void *src,
- uint_t length,
- struct vm_device *dev)
-{
- // Ramdisk_Print("[ramdisk_read_port_ignore] port = %x, length = %d\n", port, length);
- return length;
-}
-
-int ramdisk_write_port_ignore(ushort_t port,
- void *src,
- uint_t length,
- struct vm_device *dev)
-{
-
- // Ramdisk_Print("[ramdisk_write_port_ignore] port = %x, length = %d\n", port, length);
-
- trace_info(port, src, length);
- return length;
-}
-//////////////////////////////////////////////////////////////////////////
-
-/*
- * ATAPI subroutines
- */
-
-static
-void rd_init_send_atapi_command(struct channel_t *channels, Bit8u channel, Bit8u command, int req_length, int alloc_length, bool lazy)
-{
- // SELECTED_CONTROLLER(channel).byte_count is a union of SELECTED_CONTROLLER(channel).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 (SELECTED_CONTROLLER(channel).byte_count == 0xffff)
- SELECTED_CONTROLLER(channel).byte_count = 0xfffe;
-
- if ((SELECTED_CONTROLLER(channel).byte_count & 1)
- && !(alloc_length <= SELECTED_CONTROLLER(channel).byte_count)) {
- Ramdisk_Print("\t\tOdd byte count (0x%04x) to ATAPI command 0x%02x, using 0x%x\n",
- SELECTED_CONTROLLER(channel).byte_count, command, SELECTED_CONTROLLER(channel).byte_count - 1);
- SELECTED_CONTROLLER(channel).byte_count -= 1;
+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;
}
- if (SELECTED_CONTROLLER(channel).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 = SELECTED_CONTROLLER(channel).byte_count;
-
- SELECTED_CONTROLLER(channel).interrupt_reason.i_o = 1;
- SELECTED_CONTROLLER(channel).interrupt_reason.c_d = 0;
- SELECTED_CONTROLLER(channel).status.busy = 0;
- SELECTED_CONTROLLER(channel).status.drq = 1;
- SELECTED_CONTROLLER(channel).status.err = 0;
-
- // no bytes transfered yet
- if (lazy)
- SELECTED_CONTROLLER(channel).buffer_index = 2048;
- else
- SELECTED_CONTROLLER(channel).buffer_index = 0;
- SELECTED_CONTROLLER(channel).drq_index = 0;
-
- if (SELECTED_CONTROLLER(channel).byte_count > req_length)
- SELECTED_CONTROLLER(channel).byte_count = req_length;
-
- if (SELECTED_CONTROLLER(channel).byte_count > alloc_length)
- SELECTED_CONTROLLER(channel).byte_count = alloc_length;
-
- SELECTED_DRIVE(channel).atapi.command = command;
- SELECTED_DRIVE(channel).atapi.drq_bytes = SELECTED_CONTROLLER(channel).byte_count;
- SELECTED_DRIVE(channel).atapi.total_bytes_remaining = (req_length < alloc_length) ? req_length : alloc_length;
+ controller->sector_count = 0;
+ controller->interrupt_reason.i_o = 1;
+ if (controller->sector_count != 0x02) {
+ return INTR_REASON_BIT_ERR;
+ }
- // if (lazy) {
- // // bias drq_bytes and total_bytes_remaining
- // SELECTED_DRIVE(channel).atapi.drq_bytes += 2048;
- // SELECTED_DRIVE(channel).atapi.total_bytes_remaining += 2048;
- // }
-}
-
-
-static
-void rd_atapi_cmd_error(struct channel_t *channels, Bit8u channel, sense_t sense_key, asc_t asc)
-{
- Ramdisk_Print("[rd_atapi_cmd_error]\n");
- Ramdisk_Print("Error: atapi_cmd_error channel=%02x key=%02x asc=%02x\n", channel, sense_key, asc);
-
- SELECTED_CONTROLLER(channel).error_register = sense_key << 4;
- SELECTED_CONTROLLER(channel).interrupt_reason.i_o = 1;
- SELECTED_CONTROLLER(channel).interrupt_reason.c_d = 1;
- SELECTED_CONTROLLER(channel).interrupt_reason.rel = 0;
- SELECTED_CONTROLLER(channel).status.busy = 0;
- SELECTED_CONTROLLER(channel).status.drive_ready = 1;
- SELECTED_CONTROLLER(channel).status.write_fault = 0;
- SELECTED_CONTROLLER(channel).status.drq = 0;
- SELECTED_CONTROLLER(channel).status.err = 1;
+ controller->sector_count = 0;
+ controller->interrupt_reason.rel = 1;
+ if (controller->sector_count != 0x04) {
+ return INTR_REASON_BIT_ERR;
+ }
- SELECTED_DRIVE(channel).sense.sense_key = sense_key;
- SELECTED_DRIVE(channel).sense.asc = asc;
- SELECTED_DRIVE(channel).sense.ascq = 0;
-}
-
-
-static
-void rd_atapi_cmd_nop(struct channel_t *channels, Bit8u channel)
-{
- Ramdisk_Print("[rd_atapi_cmd_nop]\n");
- SELECTED_CONTROLLER(channel).interrupt_reason.i_o = 1;
- SELECTED_CONTROLLER(channel).interrupt_reason.c_d = 1;
- SELECTED_CONTROLLER(channel).interrupt_reason.rel = 0;
- SELECTED_CONTROLLER(channel).status.busy = 0;
- SELECTED_CONTROLLER(channel).status.drive_ready = 1;
- SELECTED_CONTROLLER(channel).status.drq = 0;
- SELECTED_CONTROLLER(channel).status.err = 0;
-}
-
-
-static
-void rd_init_mode_sense_single(struct channel_t *channels,
- Bit8u channel, const void* src, int size)
-{
- Ramdisk_Print("[rd_init_mode_sense_single]\n");
- // Header
- SELECTED_CONTROLLER(channel).buffer[0] = (size+6) >> 8;
- SELECTED_CONTROLLER(channel).buffer[1] = (size+6) & 0xff;
- SELECTED_CONTROLLER(channel).buffer[2] = 0x70; // no media present
- SELECTED_CONTROLLER(channel).buffer[3] = 0; // reserved
- SELECTED_CONTROLLER(channel).buffer[4] = 0; // reserved
- SELECTED_CONTROLLER(channel).buffer[5] = 0; // reserved
- SELECTED_CONTROLLER(channel).buffer[6] = 0; // reserved
- SELECTED_CONTROLLER(channel).buffer[7] = 0; // reserved
+ controller->sector_count = 0;
+ controller->interrupt_reason.tag = 3;
+ if (controller->sector_count != 0x18) {
+ return INTR_REASON_BIT_ERR;
+ }
- // Data
- memcpy(SELECTED_CONTROLLER(channel).buffer + 8, src, size);
-}
-
-
-static
-void rd_ready_to_send_atapi(struct channel_t *channels, Bit8u channel)
-{
- Ramdisk_Print("[rd_ready_to_send_atapi]\n");
- rd_raise_interrupt(ramdisk_state->channels, channel);
-}
-
-
-static
-void rd_command_aborted(struct channel_t *channels,
- Bit8u channel, unsigned value)
-{
- Ramdisk_Print("[rd_command_aborted]\n");
- Ramdisk_Print("\t\taborting on command 0x%02x {%s}\n", value, SELECTED_TYPE_STRING(channel));
- SELECTED_CONTROLLER(channel).current_command = 0;
- SELECTED_CONTROLLER(channel).status.busy = 0;
- SELECTED_CONTROLLER(channel).status.drive_ready = 1;
- SELECTED_CONTROLLER(channel).status.err = 1;
- SELECTED_CONTROLLER(channel).error_register = 0x04; // command ABORTED
- SELECTED_CONTROLLER(channel).status.drq = 0;
- SELECTED_CONTROLLER(channel).status.seek_complete = 0;
- SELECTED_CONTROLLER(channel).status.corrected_data = 0;
- SELECTED_CONTROLLER(channel).buffer_index = 0;
- rd_raise_interrupt(ramdisk_state->channels, channel);
-}
-
-
-static int ramdisk_init_device(struct vm_device *dev)
-{
- struct ramdisk_t *ramdisk_state = (struct ramdisk_t *)dev->private_data;
-
- ramdisk_state->cops.init(ramdisk_state, dev);
-
- //hook ports IDE 0x170-0x177, 0x376 & 0x377
- dev_hook_io(dev, 0x170,
- (ramdisk_state->eops.read_port),
- (ramdisk_state->eops.write_port));
-
- dev_hook_io(dev, 0x171,
- (ramdisk_state->eops.read_port),
- (ramdisk_state->eops.write_port));
-
- dev_hook_io(dev, 0x172,
- (ramdisk_state->eops.read_port),
- (ramdisk_state->eops.write_port));
-
- dev_hook_io(dev, 0x173,
- (ramdisk_state->eops.read_port),
- (ramdisk_state->eops.write_port));
-
- dev_hook_io(dev, 0x174,
- (ramdisk_state->eops.read_port),
- (ramdisk_state->eops.write_port));
-
- dev_hook_io(dev, 0x175,
- (ramdisk_state->eops.read_port),
- (ramdisk_state->eops.write_port));
-
- dev_hook_io(dev, 0x176,
- (ramdisk_state->eops.read_port),
- (ramdisk_state->eops.write_port));
-
- dev_hook_io(dev, 0x177,
- (ramdisk_state->eops.read_port),
- (ramdisk_state->eops.write_port));
-
- dev_hook_io(dev, 0x376,
- (ramdisk_state->eops.read_port),
- (ramdisk_state->eops.write_port));
-
- dev_hook_io(dev, 0x377,
- (ramdisk_state->eops.read_port),
- (ramdisk_state->eops.write_port));
-
- //Debug ports: 0x3e8-0x3ef & 0x2e8-0x2ef
-
-#ifdef DEBUG_RAMDISK
-
- dev_hook_io(dev, 0x3e8,
- (ramdisk_state->eops.read_port_ignore),
- (ramdisk_state->eops.write_port_ignore));
-
- dev_hook_io(dev, 0x3e9,
- (ramdisk_state->eops.read_port_ignore),
- (ramdisk_state->eops.write_port_ignore));
-
- dev_hook_io(dev, 0x3ea,
- (ramdisk_state->eops.read_port_ignore),
- (ramdisk_state->eops.write_port_ignore));
-
- dev_hook_io(dev, 0x3eb,
- (ramdisk_state->eops.read_port_ignore),
- (ramdisk_state->eops.write_port_ignore));
-
- dev_hook_io(dev, 0x3ec,
- (ramdisk_state->eops.read_port_ignore),
- (ramdisk_state->eops.write_port_ignore));
-
- dev_hook_io(dev, 0x3ed,
- (ramdisk_state->eops.read_port_ignore),
- (ramdisk_state->eops.write_port_ignore));
-
- dev_hook_io(dev, 0x3ee,
- (ramdisk_state->eops.read_port_ignore),
- (ramdisk_state->eops.write_port_ignore));
-
- dev_hook_io(dev, 0x3ef,
- (ramdisk_state->eops.read_port_ignore),
- (ramdisk_state->eops.write_port_ignore));
-
- dev_hook_io(dev, 0x2e8,
- (ramdisk_state->eops.read_port_ignore),
- (ramdisk_state->eops.write_port_ignore));
-
- dev_hook_io(dev, 0x2e9,
- (ramdisk_state->eops.read_port_ignore),
- (ramdisk_state->eops.write_port_ignore));
-
- dev_hook_io(dev, 0x2ea,
- (ramdisk_state->eops.read_port_ignore),
- (ramdisk_state->eops.write_port_ignore));
-
- dev_hook_io(dev, 0x2eb,
- (ramdisk_state->eops.read_port_ignore),
- (ramdisk_state->eops.write_port_ignore));
-
- dev_hook_io(dev, 0x2ec,
- (ramdisk_state->eops.read_port_ignore),
- (ramdisk_state->eops.write_port_ignore));
-
- dev_hook_io(dev, 0x2ed,
- (ramdisk_state->eops.read_port_ignore),
- (ramdisk_state->eops.write_port_ignore));
-
- dev_hook_io(dev, 0x2ee,
- (ramdisk_state->eops.read_port_ignore),
- (ramdisk_state->eops.write_port_ignore));
-
- dev_hook_io(dev, 0x2ef,
- (ramdisk_state->eops.read_port_ignore),
- (ramdisk_state->eops.write_port_ignore));
-
-#endif
-
-}
-
-
-static int ramdisk_deinit_device(struct vm_device *dev)
-{
- struct ramdisk_t *ramdisk_state = (struct ramdisk_t *)(dev->private_data);
- ramdisk_state->cops.close(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,
-};
-
-
-
-/*
- * Success: return 0;
- * Failure: return integer greater than 0
- */
-
-/*
-struct ramdisk_t * create_ramdisk()
-{
- struct ramdisk_t *ramdisk;
- ramdisk = (struct ramdisk_t *)V3_Malloc(sizeof(struct ramdisk_t));
- V3_ASSERT(ramdisk != NULL);
-
- ramdisk->cops.init = &rd_init_harddrive;
- ramdisk->cops.close = &rd_close_harddrive;
- ramdisk->cops.reset = &rd_reset_harddrive;
-
- ramdisk->eops.read_port = &ramdisk_read_port;
- ramdisk->eops.write_port = &ramdisk_write_port;
- ramdisk->eops.read_port_ignore = &ramdisk_read_port_ignore;
- ramdisk->eops.write_port_ignore = &ramdisk_write_port_ignore;
-
- return ramdisk;
-}
-
-*/
-
-
-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");
- ramdisk->cops.init = &rd_init_harddrive;
- ramdisk->cops.close = &rd_close_harddrive;
- ramdisk->cops.reset = &rd_reset_harddrive;
-
- ramdisk->eops.read_port = &ramdisk_read_port;
- ramdisk->eops.write_port = &ramdisk_write_port;
- ramdisk->eops.read_port_ignore = &ramdisk_read_port_ignore;
- ramdisk->eops.write_port_ignore = &ramdisk_write_port_ignore;
-
- struct vm_device *device = create_device("RAMDISK", &dev_ops, ramdisk);
-
- return device;
-}
+#endif
