diff options
Diffstat (limited to 'include/linux/fdreg.h')
| -rw-r--r-- | include/linux/fdreg.h | 40 |
1 files changed, 37 insertions, 3 deletions
diff --git a/include/linux/fdreg.h b/include/linux/fdreg.h index 245647bbf..1d9026eed 100644 --- a/include/linux/fdreg.h +++ b/include/linux/fdreg.h @@ -44,7 +44,7 @@ #define ST0_DS 0x03 /* drive select mask */ #define ST0_HA 0x04 /* Head (Address) */ #define ST0_NR 0x08 /* Not Ready */ -#define ST0_ECE 0x10 /* Equipment chech error */ +#define ST0_ECE 0x10 /* Equipment check error */ #define ST0_SE 0x20 /* Seek end */ #define ST0_INTR 0xC0 /* Interrupt code mask */ @@ -92,18 +92,52 @@ #define FD_RSEEK_OUT 0x8f /* seek out (i.e. to lower tracks) */ #define FD_RSEEK_IN 0xcf /* seek in (i.e. to higher tracks) */ +/* the following commands are new in the 82078. They are not used in the + * floppy driver, except the first three. These commands may be useful for apps + * which use the FDRAWCMD interface. For doc, get the 82078 spec sheets at + * http://www-techdoc.intel.com/docs/periph/fd_contr/datasheets/ */ + +#define FD_PARTID 0x18 /* part id ("extended" version cmd) */ +#define FD_SAVE 0x2e /* save fdc regs for later restore */ +#define FD_DRIVESPEC 0x8e /* drive specification: Access to the + * 2 Mbps data transfer rate for tape + * drives */ + +#define FD_RESTORE 0x4e /* later restore */ +#define FD_POWERDOWN 0x27 /* configure FDC's powersave features */ +#define FD_FORMAT_N_WRITE 0xef /* format and write in one go. */ +#define FD_OPTION 0x33 /* ISO format (which is a clean way to + * pack more sectors on a track) */ + /* DMA commands */ #define DMA_READ 0x46 #define DMA_WRITE 0x4A /* FDC version return types */ #define FDC_NONE 0x00 -#define FDC_UNKNOWN 0x10 +#define FDC_UNKNOWN 0x10 /* DO NOT USE THIS TYPE EXCEPT IF IDENTIFICATION + FAILS EARLY */ #define FDC_8272A 0x20 /* Intel 8272a, NEC 765 */ #define FDC_765ED 0x30 /* Non-Intel 1MB-compatible FDC, can't detect */ #define FDC_82072 0x40 /* Intel 82072; 8272a + FIFO + DUMPREGS */ -#define FDC_82077_ORIG 0x50 /* Original version of 82077AA, sans LOCK */ +#define FDC_82072A 0x45 /* 82072A (on Sparcs) */ +#define FDC_82077_ORIG 0x51 /* Original version of 82077AA, sans LOCK */ #define FDC_82077 0x52 /* 82077AA-1 */ +#define FDC_82078_UNKN 0x5f /* Unknown 82078 variant */ +#define FDC_82078 0x60 /* 44pin 82078 or 64pin 82078SL */ +#define FDC_82078_1 0x61 /* 82078-1 (2Mbps fdc) */ +#define FDC_S82078B 0x62 /* S82078B (first seen on Adaptec AVA-2825 VLB + * SCSI/EIDE/Floppy controller) */ +#define FDC_87306 0x63 /* National Semiconductor PC 87306 */ + +/* + * Beware: the fdc type list is roughly sorted by increasing features. + * Presence of features is tested by comparing the FDC version id with the + * "oldest" version that has the needed feature. + * If during FDC detection, an obscure test fails late in the sequence, don't + * assign FDC_UNKNOWN. Else the FDC will be treated as a dumb 8272a, or worse. + * This is especially true if the tests are unneeded. + */ #define FD_RESET_DELAY 20 #endif |