freebsd-skq/sys/dev/advansys/adw_pci.c
peter 41b420910c Simplify the COMPAT_PCI_DRIVER/DATA_SET hack. We can add:
#define COMPAT_PCI_DRIVER(name,data) DATA_SET(pcidevice_set,data)
.. to 2.2.x and 3.x if people think it's worth it.  Driver writers can do
this if it's not defined.  (The reason for this is that I'm trying to
progressively eliminate use of linker_sets where it hurts modularity and
runtime load capability, and these DATA_SET's keep getting in the way.)
1999-05-09 17:07:30 +00:00

188 lines
5.1 KiB
C

/*
* Device probe and attach routines for the following
* Advanced Systems Inc. SCSI controllers:
*
* ABP940UW - Bus-Master PCI Ultra-Wide (240 CDB)
*
* Copyright (c) 1998 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, immediately at the beginning of the file.
* 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.
*
* $Id: adw_pci.c,v 1.4 1999/04/24 20:13:58 peter Exp $
*/
#include <pci.h>
#if NPCI > 0
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <machine/bus_pio.h>
#include <machine/bus.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 PCI_BASEADR0 PCI_MAP_REG_START /* I/O Address */
#define PCI_BASEADR1 PCI_MAP_REG_START + 4 /* Mem I/O Address */
#define PCI_DEVICE_ID_ADVANSYS_3550 0x230010CD
#define ADW_PCI_MAX_DMA_ADDR (0xFFFFFFFFUL)
#define ADW_PCI_MAX_DMA_COUNT (0xFFFFFFFFUL)
static const char* adwpciprobe(pcici_t tag, pcidi_t type);
static void adwpciattach(pcici_t config_id, int unit);
static struct pci_device adw_pci_driver = {
"adw",
adwpciprobe,
adwpciattach,
&adw_unit,
NULL
};
COMPAT_PCI_DRIVER (adw_pci, adw_pci_driver);
static const char*
adwpciprobe(pcici_t tag, pcidi_t type)
{
switch (type) {
case PCI_DEVICE_ID_ADVANSYS_3550:
return ("AdvanSys ASC3550 SCSI controller");
default:
break;
}
return (NULL);
}
static void
adwpciattach(pcici_t config_id, int unit)
{
u_int32_t id;
u_int32_t command;
vm_offset_t vaddr;
#ifdef ADW_ALLOW_MEMIO
vm_offset_t paddr;
#endif
u_int16_t io_port;
bus_space_tag_t tag;
bus_space_handle_t bsh;
struct adw_softc *adw;
int error;
/*
* Determine the chip version.
*/
id = pci_cfgread(config_id, PCI_ID_REG, /*bytes*/4);
command = pci_cfgread(config_id, PCIR_COMMAND, /*bytes*/1);
/*
* These cards do not allow memory mapped accesses, so we must
* ensure that I/O accesses are available or we won't be able
* to talk to them.
*/
vaddr = 0;
#ifdef ADW_ALLOW_MEMIO
if ((command & PCI_COMMAND_MEM_ENABLE) == 0
|| (pci_map_mem(config_id, PCI_BASEADR1, &vaddr, &paddr)) == 0)
#endif
if ((command & PCI_COMMAND_IO_ENABLE) == 0
|| (pci_map_port(config_id, PCI_BASEADR0, &io_port)) == 0)
return;
/* XXX Should be passed in by parent bus */
/* XXX Why isn't the 0x10 offset incorporated into the reg defs? */
if (vaddr != 0) {
tag = I386_BUS_SPACE_MEM;
bsh = vaddr;
} else {
tag = I386_BUS_SPACE_IO;
bsh = io_port;
}
if (adw_find_signature(tag, bsh) == 0)
return;
adw = adw_alloc(unit, tag, bsh);
if (adw == NULL)
return;
/* 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*/0,
/*boundary*/0,
/*lowaddr*/ADW_PCI_MAX_DMA_ADDR,
/*highaddr*/BUS_SPACE_MAXADDR,
/*filter*/NULL, /*filterarg*/NULL,
/*maxsize*/BUS_SPACE_MAXSIZE_32BIT,
/*nsegments*/BUS_SPACE_UNRESTRICTED,
/*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;
}
adw->init_level++;
if (adw_init(adw) != 0) {
adw_free(adw);
return;
}
/*
* 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);
if ((pci_map_int(config_id, adw_intr, (void *)adw, &cam_imask)) == 0) {
adw_free(adw);
return;
}
adw_attach(adw);
}
#endif /* NPCI > 0 */