diff options
Diffstat (limited to 'include/asm-sparc')
| -rw-r--r-- | include/asm-sparc/floppy.h | 80 |
1 files changed, 50 insertions, 30 deletions
diff --git a/include/asm-sparc/floppy.h b/include/asm-sparc/floppy.h index 9073c84..28ce2b9 100644 --- a/include/asm-sparc/floppy.h +++ b/include/asm-sparc/floppy.h @@ -101,6 +101,29 @@ static struct sun_floppy_ops sun_fdops; #define CROSS_64KB(a,s) (0) /* Routines unique to each controller type on a Sun. */ +static void sun_set_dor(unsigned char value, int fdc_82077) +{ + if (sparc_cpu_model == sun4c) { + unsigned int bits = 0; + if (value & 0x10) + bits |= AUXIO_FLPY_DSEL; + if ((value & 0x80) == 0) + bits |= AUXIO_FLPY_EJCT; + set_auxio(bits, (~bits) & (AUXIO_FLPY_DSEL|AUXIO_FLPY_EJCT)); + } + if (fdc_82077) { + sun_fdc->dor_82077 = value; + } +} + +static unsigned char sun_read_dir(void) +{ + if (sparc_cpu_model == sun4c) + return (get_auxio() & AUXIO_FLPY_DCHG) ? 0x80 : 0; + else + return sun_fdc->dir_82077; +} + static unsigned char sun_82072_fd_inb(int port) { udelay(5); @@ -113,7 +136,7 @@ static unsigned char sun_82072_fd_inb(int port) case 5: /* FD_DATA */ return sun_fdc->data_82072; case 7: /* FD_DIR */ - return (get_auxio() & AUXIO_FLPY_DCHG)? 0x80: 0; + return sun_read_dir(); }; panic("sun_82072_fd_inb: How did I get here?"); } @@ -126,20 +149,7 @@ static void sun_82072_fd_outb(unsigned char value, int port) printk("floppy: Asked to write to unknown port %d\n", port); panic("floppy: Port bolixed."); case 2: /* FD_DOR */ - /* Oh geese, 82072 on the Sun has no DOR register, - * the functionality is implemented via the AUXIO - * I/O register. So we must emulate the behavior. - * - * ASSUMPTIONS: There will only ever be one floppy - * drive attached to a Sun controller - * and it will be at drive zero. - */ - { - unsigned bits = 0; - if (value & 0x10) bits |= AUXIO_FLPY_DSEL; - if ((value & 0x80) == 0) bits |= AUXIO_FLPY_EJCT; - set_auxio(bits, (~bits) & (AUXIO_FLPY_DSEL|AUXIO_FLPY_EJCT)); - } + sun_set_dor(value, 0); break; case 5: /* FD_DATA */ sun_fdc->data_82072 = value; @@ -161,15 +171,22 @@ static unsigned char sun_82077_fd_inb(int port) default: printk("floppy: Asked to read unknown port %d\n", port); panic("floppy: Port bolixed."); + case 0: /* FD_STATUS_0 */ + return sun_fdc->status1_82077; + case 1: /* FD_STATUS_1 */ + return sun_fdc->status2_82077; + case 2: /* FD_DOR */ + return sun_fdc->dor_82077; + case 3: /* FD_TDR */ + return sun_fdc->tapectl_82077; case 4: /* FD_STATUS */ return sun_fdc->status_82077 & ~STATUS_DMA; case 5: /* FD_DATA */ return sun_fdc->data_82077; case 7: /* FD_DIR */ - /* XXX: Is DCL on 0x80 in sun4m? */ - return sun_fdc->dir_82077; + return sun_read_dir(); }; - panic("sun_82072_fd_inb: How did I get here?"); + panic("sun_82077_fd_inb: How did I get here?"); } static void sun_82077_fd_outb(unsigned char value, int port) @@ -180,8 +197,7 @@ static void sun_82077_fd_outb(unsigned char value, int port) printk("floppy: Asked to write to unknown port %d\n", port); panic("floppy: Port bolixed."); case 2: /* FD_DOR */ - /* Happily, the 82077 has a real DOR register. */ - sun_fdc->dor_82077 = value; + sun_set_dor(value, 1); break; case 5: /* FD_DATA */ sun_fdc->data_82077 = value; @@ -192,6 +208,9 @@ static void sun_82077_fd_outb(unsigned char value, int port) case 4: /* FD_STATUS */ sun_fdc->status_82077 = value; break; + case 3: /* FD_TDR */ + sun_fdc->tapectl_82077 = value; + break; }; return; } @@ -332,16 +351,17 @@ static int sun_floppy_init(void) goto no_sun_fdc; } - if(sparc_cpu_model == sun4c) { - sun_fdops.fd_inb = sun_82072_fd_inb; - sun_fdops.fd_outb = sun_82072_fd_outb; - fdc_status = &sun_fdc->status_82072; - /* printk("AUXIO @0x%lx\n", auxio_register); */ /* P3 */ - } else { - sun_fdops.fd_inb = sun_82077_fd_inb; - sun_fdops.fd_outb = sun_82077_fd_outb; - fdc_status = &sun_fdc->status_82077; - /* printk("DOR @0x%p\n", &sun_fdc->dor_82077); */ /* P3 */ + sun_fdops.fd_inb = sun_82077_fd_inb; + sun_fdops.fd_outb = sun_82077_fd_outb; + fdc_status = &sun_fdc->status_82077; + + if (sun_fdc->dor_82077 == 0x80) { + sun_fdc->dor_82077 = 0x02; + if (sun_fdc->dor_82077 == 0x80) { + sun_fdops.fd_inb = sun_82072_fd_inb; + sun_fdops.fd_outb = sun_82072_fd_outb; + fdc_status = &sun_fdc->status_82072; + } } /* Success... */ |
