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alistair23-linux/drivers/scsi/aic7xxx/aic7770.c
Sam Protsenko cca6cb8ad7 scsi: aic7xxx: Fix build using bare-metal toolchain 
Bare-metal toolchains don't define __linux__, so aic7xxx build with
bare-metal toolchain is broken. This driver codebase used to be partially
shared with FreeBSD, but these days there is no point in keeping the
compatibility around. So let's just drop FreeBSD related code and get rid
of __linux__ checking in order to fix the build using bare-metal
toolchains.

Signed-off-by: Sam Protsenko <semen.protsenko@linaro.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2018-08-30 07:41:09 -04:00

386 lines
9.5 KiB
C
Raw Blame History

/*
* 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);
}
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