diff options
Diffstat (limited to 'drivers/scsi/aic7xxx/aic7770.c')
| -rw-r--r-- | drivers/scsi/aic7xxx/aic7770.c | 385 |
1 files changed, 385 insertions, 0 deletions
diff --git a/drivers/scsi/aic7xxx/aic7770.c b/drivers/scsi/aic7xxx/aic7770.c new file mode 100644 index 000000000..176704b24 --- /dev/null +++ b/drivers/scsi/aic7xxx/aic7770.c @@ -0,0 +1,385 @@ +/* + * Product specific probe and attach routines for: + * 27/284X and aic7770 motherboard SCSI controllers + * + * Copyright (c) 1994-1998, 2000, 2001 Justin T. Gibbs. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions, and the following disclaimer, + * without modification. + * 2. Redistributions in binary form must reproduce at minimum a disclaimer + * substantially similar to the "NO WARRANTY" disclaimer below + * ("Disclaimer") and any redistribution must be conditioned upon + * including a substantially similar Disclaimer requirement for further + * binary redistribution. + * 3. Neither the names of the above-listed copyright holders nor the names + * of any contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * Alternatively, this software may be distributed under the terms of the + * GNU General Public License ("GPL") version 2 as published by the Free + * Software Foundation. + * + * NO WARRANTY + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, + * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING + * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGES. + * + * $Id: //depot/aic7xxx/aic7xxx/aic7770.c#32 $ + * + * $FreeBSD$ + */ + +#include "aic7xxx_osm.h" +#include "aic7xxx_inline.h" +#include "aic7xxx_93cx6.h" + +#define ID_AIC7770 0x04907770 +#define ID_AHA_274x 0x04907771 +#define ID_AHA_284xB 0x04907756 /* BIOS enabled */ +#define ID_AHA_284x 0x04907757 /* BIOS disabled*/ +#define ID_OLV_274x 0x04907782 /* Olivetti OEM */ +#define ID_OLV_274xD 0x04907783 /* Olivetti OEM (Differential) */ + +static int aic7770_chip_init(struct ahc_softc *ahc); +static int aha2840_load_seeprom(struct ahc_softc *ahc); +static ahc_device_setup_t ahc_aic7770_VL_setup; +static ahc_device_setup_t ahc_aic7770_EISA_setup; +static ahc_device_setup_t ahc_aic7770_setup; + +struct aic7770_identity aic7770_ident_table[] = +{ + { + ID_AHA_274x, + 0xFFFFFFFF, + "Adaptec 274X SCSI adapter", + ahc_aic7770_EISA_setup + }, + { + ID_AHA_284xB, + 0xFFFFFFFE, + "Adaptec 284X SCSI adapter", + ahc_aic7770_VL_setup + }, + { + ID_AHA_284x, + 0xFFFFFFFE, + "Adaptec 284X SCSI adapter (BIOS Disabled)", + ahc_aic7770_VL_setup + }, + { + ID_OLV_274x, + 0xFFFFFFFF, + "Adaptec (Olivetti OEM) 274X SCSI adapter", + ahc_aic7770_EISA_setup + }, + { + ID_OLV_274xD, + 0xFFFFFFFF, + "Adaptec (Olivetti OEM) 274X Differential SCSI adapter", + ahc_aic7770_EISA_setup + }, + /* Generic chip probes for devices we don't know 'exactly' */ + { + ID_AIC7770, + 0xFFFFFFFF, + "Adaptec aic7770 SCSI adapter", + ahc_aic7770_EISA_setup + } +}; +const int ahc_num_aic7770_devs = ARRAY_SIZE(aic7770_ident_table); + +struct aic7770_identity * +aic7770_find_device(uint32_t id) +{ + struct aic7770_identity *entry; + int i; + + for (i = 0; i < ahc_num_aic7770_devs; i++) { + entry = &aic7770_ident_table[i]; + if (entry->full_id == (id & entry->id_mask)) + return (entry); + } + return (NULL); +} + +int +aic7770_config(struct ahc_softc *ahc, struct aic7770_identity *entry, u_int io) +{ + int error; + int have_seeprom; + u_int hostconf; + u_int irq; + u_int intdef; + + error = entry->setup(ahc); + have_seeprom = 0; + if (error != 0) + return (error); + + error = aic7770_map_registers(ahc, io); + if (error != 0) + return (error); + + /* + * Before we continue probing the card, ensure that + * its interrupts are *disabled*. We don't want + * a misstep to hang the machine in an interrupt + * storm. + */ + ahc_intr_enable(ahc, FALSE); + + ahc->description = entry->name; + error = ahc_softc_init(ahc); + if (error != 0) + return (error); + + ahc->bus_chip_init = aic7770_chip_init; + + error = ahc_reset(ahc, /*reinit*/FALSE); + if (error != 0) + return (error); + + /* Make sure we have a valid interrupt vector */ + intdef = ahc_inb(ahc, INTDEF); + irq = intdef & VECTOR; + switch (irq) { + case 9: + case 10: + case 11: + case 12: + case 14: + case 15: + break; + default: + printk("aic7770_config: invalid irq setting %d\n", intdef); + return (ENXIO); + } + + if ((intdef & EDGE_TRIG) != 0) + ahc->flags |= AHC_EDGE_INTERRUPT; + + switch (ahc->chip & (AHC_EISA|AHC_VL)) { + case AHC_EISA: + { + u_int biosctrl; + u_int scsiconf; + u_int scsiconf1; + + biosctrl = ahc_inb(ahc, HA_274_BIOSCTRL); + scsiconf = ahc_inb(ahc, SCSICONF); + scsiconf1 = ahc_inb(ahc, SCSICONF + 1); + + /* Get the primary channel information */ + if ((biosctrl & CHANNEL_B_PRIMARY) != 0) + ahc->flags |= 1; + + if ((biosctrl & BIOSMODE) == BIOSDISABLED) { + ahc->flags |= AHC_USEDEFAULTS; + } else { + if ((ahc->features & AHC_WIDE) != 0) { + ahc->our_id = scsiconf1 & HWSCSIID; + if (scsiconf & TERM_ENB) + ahc->flags |= AHC_TERM_ENB_A; + } else { + ahc->our_id = scsiconf & HSCSIID; + ahc->our_id_b = scsiconf1 & HSCSIID; + if (scsiconf & TERM_ENB) + ahc->flags |= AHC_TERM_ENB_A; + if (scsiconf1 & TERM_ENB) + ahc->flags |= AHC_TERM_ENB_B; + } + } + if ((ahc_inb(ahc, HA_274_BIOSGLOBAL) & HA_274_EXTENDED_TRANS)) + ahc->flags |= AHC_EXTENDED_TRANS_A|AHC_EXTENDED_TRANS_B; + break; + } + case AHC_VL: + { + have_seeprom = aha2840_load_seeprom(ahc); + break; + } + default: + break; + } + if (have_seeprom == 0) { + kfree(ahc->seep_config); + ahc->seep_config = NULL; + } + + /* + * Ensure autoflush is enabled + */ + ahc_outb(ahc, SBLKCTL, ahc_inb(ahc, SBLKCTL) & ~AUTOFLUSHDIS); + + /* Setup the FIFO threshold and the bus off time */ + hostconf = ahc_inb(ahc, HOSTCONF); + ahc_outb(ahc, BUSSPD, hostconf & DFTHRSH); + ahc_outb(ahc, BUSTIME, (hostconf << 2) & BOFF); + + ahc->bus_softc.aic7770_softc.busspd = hostconf & DFTHRSH; + ahc->bus_softc.aic7770_softc.bustime = (hostconf << 2) & BOFF; + + /* + * Generic aic7xxx initialization. + */ + error = ahc_init(ahc); + if (error != 0) + return (error); + + error = aic7770_map_int(ahc, irq); + if (error != 0) + return (error); + + ahc->init_level++; + + /* + * Enable the board's BUS drivers + */ + ahc_outb(ahc, BCTL, ENABLE); + return (0); +} + +static int +aic7770_chip_init(struct ahc_softc *ahc) +{ + ahc_outb(ahc, BUSSPD, ahc->bus_softc.aic7770_softc.busspd); + ahc_outb(ahc, BUSTIME, ahc->bus_softc.aic7770_softc.bustime); + ahc_outb(ahc, SBLKCTL, ahc_inb(ahc, SBLKCTL) & ~AUTOFLUSHDIS); + ahc_outb(ahc, BCTL, ENABLE); + return (ahc_chip_init(ahc)); +} + +/* + * Read the 284x SEEPROM. + */ +static int +aha2840_load_seeprom(struct ahc_softc *ahc) +{ + struct seeprom_descriptor sd; + struct seeprom_config *sc; + int have_seeprom; + uint8_t scsi_conf; + + sd.sd_ahc = ahc; + sd.sd_control_offset = SEECTL_2840; + sd.sd_status_offset = STATUS_2840; + sd.sd_dataout_offset = STATUS_2840; + sd.sd_chip = C46; + sd.sd_MS = 0; + sd.sd_RDY = EEPROM_TF; + sd.sd_CS = CS_2840; + sd.sd_CK = CK_2840; + sd.sd_DO = DO_2840; + sd.sd_DI = DI_2840; + sc = ahc->seep_config; + + if (bootverbose) + printk("%s: Reading SEEPROM...", ahc_name(ahc)); + have_seeprom = ahc_read_seeprom(&sd, (uint16_t *)sc, + /*start_addr*/0, sizeof(*sc)/2); + + if (have_seeprom) { + + if (ahc_verify_cksum(sc) == 0) { + if(bootverbose) + printk ("checksum error\n"); + have_seeprom = 0; + } else if (bootverbose) { + printk("done.\n"); + } + } + + if (!have_seeprom) { + if (bootverbose) + printk("%s: No SEEPROM available\n", ahc_name(ahc)); + ahc->flags |= AHC_USEDEFAULTS; + } else { + /* + * Put the data we've collected down into SRAM + * where ahc_init will find it. + */ + int i; + int max_targ; + uint16_t discenable; + + max_targ = (ahc->features & AHC_WIDE) != 0 ? 16 : 8; + discenable = 0; + for (i = 0; i < max_targ; i++){ + uint8_t target_settings; + + target_settings = (sc->device_flags[i] & CFXFER) << 4; + if (sc->device_flags[i] & CFSYNCH) + target_settings |= SOFS; + if (sc->device_flags[i] & CFWIDEB) + target_settings |= WIDEXFER; + if (sc->device_flags[i] & CFDISC) + discenable |= (0x01 << i); + ahc_outb(ahc, TARG_SCSIRATE + i, target_settings); + } + ahc_outb(ahc, DISC_DSB, ~(discenable & 0xff)); + ahc_outb(ahc, DISC_DSB + 1, ~((discenable >> 8) & 0xff)); + + ahc->our_id = sc->brtime_id & CFSCSIID; + + scsi_conf = (ahc->our_id & 0x7); + if (sc->adapter_control & CFSPARITY) + scsi_conf |= ENSPCHK; + if (sc->adapter_control & CFRESETB) + scsi_conf |= RESET_SCSI; + + if (sc->bios_control & CF284XEXTEND) + ahc->flags |= AHC_EXTENDED_TRANS_A; + /* Set SCSICONF info */ + ahc_outb(ahc, SCSICONF, scsi_conf); + + if (sc->adapter_control & CF284XSTERM) + ahc->flags |= AHC_TERM_ENB_A; + } + return (have_seeprom); +} + +static int +ahc_aic7770_VL_setup(struct ahc_softc *ahc) +{ + int error; + + error = ahc_aic7770_setup(ahc); + ahc->chip |= AHC_VL; + return (error); +} + +static int +ahc_aic7770_EISA_setup(struct ahc_softc *ahc) +{ + int error; + + error = ahc_aic7770_setup(ahc); + ahc->chip |= AHC_EISA; + return (error); +} + +static int +ahc_aic7770_setup(struct ahc_softc *ahc) +{ + ahc->channel = 'A'; + ahc->channel_b = 'B'; + ahc->chip = AHC_AIC7770; + ahc->features = AHC_AIC7770_FE; + ahc->bugs |= AHC_TMODE_WIDEODD_BUG; + ahc->flags |= AHC_PAGESCBS; + ahc->instruction_ram_size = 448; + return (0); +} |