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freebsd/sys/dev/advansys/adw_pci.c

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/*
* Device probe and attach routines for the following
* Advanced Systems Inc. SCSI controllers:
*
* ABP[3]940UW - Bus-Master PCI Ultra-Wide (253 CDB)
* ABP950UW - Dual Channel Bus-Master PCI Ultra-Wide (253 CDB/Channel)
* ABP970UW - Bus-Master PCI Ultra-Wide (253 CDB)
* ABP3940U2W - Bus-Master PCI LVD/Ultra2-Wide (253 CDB)
* ABP3950U2W - Bus-Master PCI LVD/Ultra2-Wide (253 CDB)
*
* Copyright (c) 1998, 1999, 2000 Justin 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. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
* ANY DIRECT, INDIRECT, INCIDENTAL, 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 DAMAGE.
*
* $FreeBSD$
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <sys/bus.h>
#include <machine/bus_pio.h>
#include <machine/bus.h>
#include <machine/resource.h>
#include <sys/rman.h>
#include <pci/pcireg.h>
#include <pci/pcivar.h>
#include <cam/cam.h>
#include <cam/scsi/scsi_all.h>
#include <dev/advansys/adwvar.h>
#include <dev/advansys/adwlib.h>
#include <dev/advansys/adwmcode.h>
#define ADW_PCI_IOBASE PCIR_MAPS /* I/O Address */
#define ADW_PCI_MEMBASE PCIR_MAPS + 4 /* Mem I/O Address */
#define PCI_ID_ADVANSYS_3550 0x230010CD00000000ull
#define PCI_ID_ADVANSYS_38C0800_REV1 0x250010CD00000000ull
#define PCI_ID_ADVANSYS_38C1600_REV1 0x270010CD00000000ull
#define PCI_ID_ALL_MASK 0xFFFFFFFFFFFFFFFFull
#define PCI_ID_DEV_VENDOR_MASK 0xFFFFFFFF00000000ull
struct adw_pci_identity;
typedef int (adw_device_setup_t)(device_t, struct adw_pci_identity *,
struct adw_softc *adw);
struct adw_pci_identity {
u_int64_t full_id;
u_int64_t id_mask;
char *name;
adw_device_setup_t *setup;
const struct adw_mcode *mcode_data;
const struct adw_eeprom *default_eeprom;
};
static adw_device_setup_t adw_asc3550_setup;
static adw_device_setup_t adw_asc38C0800_setup;
#ifdef NOTYET
static adw_device_setup_t adw_asc38C1600_setup;
#endif
struct adw_pci_identity adw_pci_ident_table[] =
{
/* asc3550 based controllers */
{
PCI_ID_ADVANSYS_3550,
PCI_ID_DEV_VENDOR_MASK,
"AdvanSys 3550 Ultra SCSI Adapter",
adw_asc3550_setup,
&adw_asc3550_mcode_data,
&adw_asc3550_default_eeprom
},
/* asc38C0800 based controllers */
{
PCI_ID_ADVANSYS_38C0800_REV1,
PCI_ID_DEV_VENDOR_MASK,
"AdvanSys 38C0800 Ultra2 SCSI Adapter",
adw_asc38C0800_setup,
&adw_asc38C0800_mcode_data,
&adw_asc38C0800_default_eeprom
},
#if NOTYET
/* XXX Disabled until I have hardware to test with */
/* asc38C1600 based controllers */
{
PCI_ID_ADVANSYS_38C1600_REV1,
PCI_ID_DEV_VENDOR_MASK,
"AdvanSys 38C1600 Ultra160 SCSI Adapter",
adw_asc38C1600_setup,
NULL, /* None provided by vendor thus far */
NULL /* None provided by vendor thus far */
}
#endif
};
static const int adw_num_pci_devs =
sizeof(adw_pci_ident_table) / sizeof(*adw_pci_ident_table);
#define ADW_PCI_MAX_DMA_ADDR (0xFFFFFFFFUL)
#define ADW_PCI_MAX_DMA_COUNT (0xFFFFFFFFUL)
static int adw_pci_probe(device_t dev);
static int adw_pci_attach(device_t dev);
static device_method_t adw_pci_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, adw_pci_probe),
DEVMETHOD(device_attach, adw_pci_attach),
{ 0, 0 }
};
static driver_t adw_pci_driver = {
"adw",
adw_pci_methods,
sizeof(struct adw_softc)
};
static devclass_t adw_devclass;
DRIVER_MODULE(adw, pci, adw_pci_driver, adw_devclass, 0, 0);
static __inline u_int64_t
adw_compose_id(u_int device, u_int vendor, u_int subdevice, u_int subvendor)
{
u_int64_t id;
id = subvendor
| (subdevice << 16)
| ((u_int64_t)vendor << 32)
| ((u_int64_t)device << 48);
return (id);
}
static struct adw_pci_identity *
adw_find_pci_device(device_t dev)
{
u_int64_t full_id;
struct adw_pci_identity *entry;
u_int i;
full_id = adw_compose_id(pci_get_device(dev),
pci_get_vendor(dev),
pci_get_subdevice(dev),
pci_get_subvendor(dev));
for (i = 0; i < adw_num_pci_devs; i++) {
entry = &adw_pci_ident_table[i];
if (entry->full_id == (full_id & entry->id_mask))
return (entry);
}
return (NULL);
}
static int
adw_pci_probe(device_t dev)
{
struct adw_pci_identity *entry;
entry = adw_find_pci_device(dev);
if (entry != NULL) {
device_set_desc(dev, entry->name);
return (0);
}
return (ENXIO);
}
static int
adw_pci_attach(device_t dev)
{
struct adw_softc *adw;
struct adw_pci_identity *entry;
u_int32_t command;
struct resource *regs;
int regs_type;
int regs_id;
int error;
int zero;
command = pci_read_config(dev, PCIR_COMMAND, /*bytes*/1);
entry = adw_find_pci_device(dev);
if (entry == NULL)
return (ENXIO);
regs = NULL;
regs_type = 0;
regs_id = 0;
#ifdef ADW_ALLOW_MEMIO
if ((command & PCIM_CMD_MEMEN) != 0) {
regs_type = SYS_RES_MEMORY;
regs_id = ADW_PCI_MEMBASE;
regs = bus_alloc_resource(dev, regs_type,
&regs_id, 0, ~0, 1, RF_ACTIVE);
}
#endif
if (regs == NULL && (command & PCIM_CMD_PORTEN) != 0) {
regs_type = SYS_RES_IOPORT;
regs_id = ADW_PCI_IOBASE;
regs = bus_alloc_resource(dev, regs_type,
&regs_id, 0, ~0, 1, RF_ACTIVE);
}
if (regs == NULL) {
device_printf(dev, "can't allocate register resources\n");
return (ENOMEM);
}
adw = adw_alloc(dev, regs, regs_type, regs_id);
if (adw == NULL)
return(ENOMEM);
/*
* Now that we have access to our registers, just verify that
* this really is an AdvanSys device.
*/
if (adw_find_signature(adw) == 0) {
adw_free(adw);
return (ENXIO);
}
adw_reset_chip(adw);
error = entry->setup(dev, entry, adw);
if (error != 0)
return (error);
/* Ensure busmastering is enabled */
command |= PCIM_CMD_BUSMASTEREN;
pci_write_config(dev, PCIR_COMMAND, command, /*bytes*/1);
/* Allocate a dmatag for our transfer DMA maps */
/* XXX Should be a child of the PCI bus dma tag */
error = bus_dma_tag_create(
/* parent */ NULL,
/* alignment */ 1,
/* boundary */ 0,
/* lowaddr */ ADW_PCI_MAX_DMA_ADDR,
/* highaddr */ BUS_SPACE_MAXADDR,
/* filter */ NULL,
/* filterarg */ NULL,
/* maxsize */ BUS_SPACE_MAXSIZE_32BIT,
/* nsegments */ ~0,
/* maxsegsz */ ADW_PCI_MAX_DMA_COUNT,
/* flags */ 0,
&adw->parent_dmat);
adw->init_level++;
if (error != 0) {
printf("%s: Could not allocate DMA tag - error %d\n",
adw_name(adw), error);
adw_free(adw);
return (error);
}
adw->init_level++;
error = adw_init(adw);
if (error != 0) {
adw_free(adw);
return (error);
}
/*
* If the PCI Configuration Command Register "Parity Error Response
* Control" Bit was clear (0), then set the microcode variable
* 'control_flag' CONTROL_FLAG_IGNORE_PERR flag to tell the microcode
* to ignore DMA parity errors.
*/
if ((command & PCIM_CMD_PERRESPEN) == 0)
adw_lram_write_16(adw, ADW_MC_CONTROL_FLAG,
adw_lram_read_16(adw, ADW_MC_CONTROL_FLAG)
| ADW_MC_CONTROL_IGN_PERR);
zero = 0;
adw->irq_res_type = SYS_RES_IRQ;
adw->irq = bus_alloc_resource(dev, adw->irq_res_type, &zero,
0, ~0, 1, RF_ACTIVE | RF_SHAREABLE);
if (adw->irq == NULL) {
adw_free(adw);
return (ENOMEM);
}
error = adw_attach(adw);
if (error != 0)
adw_free(adw);
return (error);
}
static int
adw_generic_setup(device_t dev, struct adw_pci_identity *entry,
struct adw_softc *adw)
{
adw->channel = pci_get_function(dev) == 1 ? 'B' : 'A';
adw->chip = ADW_CHIP_NONE;
adw->features = ADW_FENONE;
adw->flags = ADW_FNONE;
adw->mcode_data = entry->mcode_data;
adw->default_eeprom = entry->default_eeprom;
return (0);
}
static int
adw_asc3550_setup(device_t dev, struct adw_pci_identity *entry,
struct adw_softc *adw)
{
int error;
error = adw_generic_setup(dev, entry, adw);
if (error != 0)
return (error);
adw->chip = ADW_CHIP_ASC3550;
adw->features = ADW_ASC3550_FE;
adw->memsize = ADW_3550_MEMSIZE;
/*
* For ASC-3550, setting the START_CTL_EMFU [3:2] bits
* sets a FIFO threshold of 128 bytes. This register is
* only accessible to the host.
*/
adw_outb(adw, ADW_DMA_CFG0,
ADW_DMA_CFG0_START_CTL_EM_FU|ADW_DMA_CFG0_READ_CMD_MRM);
adw_outb(adw, ADW_MEM_CFG,
adw_inb(adw, ADW_MEM_CFG) | ADW_MEM_CFG_RAM_SZ_8KB);
return (0);
}
static int
adw_asc38C0800_setup(device_t dev, struct adw_pci_identity *entry,
struct adw_softc *adw)
{
int error;
error = adw_generic_setup(dev, entry, adw);
if (error != 0)
return (error);
/*
* For ASC-38C0800, set FIFO_THRESH_80B [6:4] bits and
* START_CTL_TH [3:2] bits for the default FIFO threshold.
*
* Note: ASC-38C0800 FIFO threshold has been changed to 256 bytes.
*
* For DMA Errata #4 set the BC_THRESH_ENB bit.
*/
adw_outb(adw, ADW_DMA_CFG0,
ADW_DMA_CFG0_BC_THRESH_ENB|ADW_DMA_CFG0_FIFO_THRESH_80B
|ADW_DMA_CFG0_START_CTL_TH|ADW_DMA_CFG0_READ_CMD_MRM);
adw_outb(adw, ADW_MEM_CFG,
adw_inb(adw, ADW_MEM_CFG) | ADW_MEM_CFG_RAM_SZ_16KB);
adw->chip = ADW_CHIP_ASC38C0800;
adw->features = ADW_ASC38C0800_FE;
adw->memsize = ADW_38C0800_MEMSIZE;
return (error);
}
#ifdef NOTYET
static int
adw_asc38C1600_setup(device_t dev, struct adw_pci_identity *entry,
struct adw_softc *adw)
{
int error;
error = adw_generic_setup(dev, entry, adw);
if (error != 0)
return (error);
adw->chip = ADW_CHIP_ASC38C1600;
adw->features = ADW_ASC38C1600_FE;
adw->memsize = ADW_38C1600_MEMSIZE;
return (error);
}
#endif
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