pata_it821x: Driver updates and reworking

- Add support for the RDC 1010 variant
- Rework the core library to have a read_id method. This allows the hacky
  bits of it821x to go and prepares us for pata_hd
- Switch from WARN to BUG in ata_id_string as it will reboot if you get
  it wrong so WARN won't be seen
- Allow the issue of command 0xFC on the 821x. This is needed to query
  rebuild status.
- Tidy up printk formatting
- Do more ident rewriting on RAID volumes to handle firmware provided
  ident data which is rather wonky
- Report the firmware revision and device layout in RAID mode
- Don't try and disable raid on the 8211 or RDC - they don't have the
  relevant bits

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/include/linux/libata.h b/include/linux/libata.h
index d4b8e5fa3e8b..06b80337303b 100644
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -750,6 +750,7 @@ struct ata_port_operations {
         void (*set_piomode)(struct ata_port *ap, struct ata_device *dev);
         void (*set_dmamode)(struct ata_port *ap, struct ata_device *dev);
         int  (*set_mode)(struct ata_link *link, struct ata_device **r_failed_dev);
+        unsigned int (*read_id)(struct ata_device *dev, struct ata_taskfile *tf, u16 *id);
 
         void (*dev_config)(struct ata_device *dev);
 
@@ -951,6 +952,8 @@ extern void ata_id_string(const u16 *id, unsigned char *s,
                           unsigned int ofs, unsigned int len);
 extern void ata_id_c_string(const u16 *id, unsigned char *s,
                             unsigned int ofs, unsigned int len);
+extern unsigned int ata_do_dev_read_id(struct ata_device *dev,
+                                        struct ata_taskfile *tf, u16 *id);
 extern void ata_qc_complete(struct ata_queued_cmd *qc);
 extern int ata_qc_complete_multiple(struct ata_port *ap, u32 qc_active);
 extern void ata_scsi_simulate(struct ata_device *dev, struct scsi_cmnd *cmd,