diff options
Diffstat (limited to 'sys/dev/buslogic/bt_pci.c')
| -rw-r--r-- | sys/dev/buslogic/bt_pci.c | 205 |
1 files changed, 205 insertions, 0 deletions
diff --git a/sys/dev/buslogic/bt_pci.c b/sys/dev/buslogic/bt_pci.c new file mode 100644 index 0000000..0286245 --- /dev/null +++ b/sys/dev/buslogic/bt_pci.c @@ -0,0 +1,205 @@ +/* + * Product specific probe and attach routines for: + * Buslogic BT946, BT948, BT956, BT958 SCSI controllers + * + * Copyright (c) 1995, 1997, 1998 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, 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. + * + * $Id$ + */ + +#include "pci.h" +#if NPCI > 0 +#include <sys/param.h> +#include <sys/systm.h> +#include <sys/kernel.h> + +#include <pci/pcireg.h> +#include <pci/pcivar.h> + +#include <machine/bus_memio.h> +#include <machine/bus_pio.h> +#include <machine/bus.h> + +#include <dev/buslogic/btreg.h> + +#define BT_PCI_IOADDR PCIR_MAPS +#define BT_PCI_MEMADDR PCIR_MAPS + 4 + +#define PCI_DEVICE_ID_BUSLOGIC_MULTIMASTER 0x1040104Bul +#define PCI_DEVICE_ID_BUSLOGIC_MULTIMASTER_NC 0x0140104Bul +#define PCI_DEVICE_ID_BUSLOGIC_FLASHPOINT 0x8130104Bul + +static int btpcideterminebusspace(pcici_t config_id, bus_space_tag_t* tagp, + bus_space_handle_t* bshp); +static char* bt_pci_probe(pcici_t tag, pcidi_t type); +static void bt_pci_attach(pcici_t config_id, int unit); + +static struct pci_device bt_pci_driver = { + "bt", + bt_pci_probe, + bt_pci_attach, + &bt_unit, + NULL +}; + +DATA_SET (pcidevice_set, bt_pci_driver); + +static int +btpcideterminebusspace(pcici_t config_id, bus_space_tag_t* tagp, + bus_space_handle_t* bshp) +{ + vm_offset_t vaddr; + vm_offset_t paddr; + u_int16_t io_port; + int command; + + vaddr = 0; + paddr = 0; + command = pci_cfgread(config_id, PCIR_COMMAND, /*bytes*/1); + /* XXX Memory Mapped I/O seems to cause problems */ +#if 0 + if ((command & PCIM_CMD_MEMEN) == 0 + || (pci_map_mem(config_id, BT_PCI_MEMADDR, &vaddr, &paddr)) == 0) +#endif + if ((command & PCIM_CMD_PORTEN) == 0 + || (pci_map_port(config_id, BT_PCI_IOADDR, &io_port)) == 0) + return (-1); + + if (vaddr != 0) { + *tagp = I386_BUS_SPACE_MEM; + *bshp = vaddr; + } else { + *tagp = I386_BUS_SPACE_IO; + *bshp = io_port; + } + + return (0); +} + +static char* +bt_pci_probe (pcici_t config_id, pcidi_t type) +{ + switch(type) { + case PCI_DEVICE_ID_BUSLOGIC_MULTIMASTER: + case PCI_DEVICE_ID_BUSLOGIC_MULTIMASTER_NC: + { + struct bt_softc *bt; + bus_space_tag_t tag; + bus_space_handle_t bsh; + pci_info_data_t pci_info; + int error; + u_int8_t new_addr; + + if (btpcideterminebusspace(config_id, &tag, &bsh) != 0) + break; + + bt = bt_alloc(BT_TEMP_UNIT, tag, bsh); + if (bt == NULL) + break; + + /* + * Determine if an ISA compatible I/O port has been + * enabled. If so, record the port so it will not + * be probed by our ISA probe, and disable the port. + */ + error = bt_cmd(bt, BOP_INQUIRE_PCI_INFO, + /*param*/NULL, /*paramlen*/0, + (u_int8_t*)&pci_info, sizeof(pci_info), + DEFAULT_CMD_TIMEOUT); + if (error == 0 + && pci_info.io_port < BIO_DISABLED) { + bt_mark_probed_bio(pci_info.io_port); + } + + new_addr = BIO_DISABLED; + bt_cmd(bt, BOP_MODIFY_IO_ADDR, /*param*/&new_addr, + /*paramlen*/1, /*reply_buf*/NULL, /*reply_len*/0, + DEFAULT_CMD_TIMEOUT); + bt_free(bt); + return ("Buslogic Multimaster SCSI host adapter"); + break; + } + default: + break; + } + + return (NULL); +} + +static void +bt_pci_attach(pcici_t config_id, int unit) +{ + struct bt_softc *bt; + bus_space_tag_t tag; + bus_space_handle_t bsh; + int opri; + + if (btpcideterminebusspace(config_id, &tag, &bsh) != 0) + return; + + if ((bt = bt_alloc(unit, tag, bsh)) == NULL) + return; /* XXX PCI code should take return status */ + + /* Allocate a dmatag for our CCB DMA maps */ + /* XXX Should be a child of the PCI bus dma tag */ + if (bus_dma_tag_create(/*parent*/NULL, /*alignemnt*/0, /*boundary*/0, + /*lowaddr*/BUS_SPACE_MAXADDR_32BIT, + /*highaddr*/BUS_SPACE_MAXADDR, + /*filter*/NULL, /*filterarg*/NULL, + /*maxsize*/BUS_SPACE_MAXSIZE_32BIT, + /*nsegments*/BUS_SPACE_UNRESTRICTED, + /*maxsegsz*/BUS_SPACE_MAXSIZE_32BIT, + /*flags*/0, &bt->parent_dmat) != 0) { + bt_free(bt); + return; + } + + if ((pci_map_int(config_id, bt_intr, (void *)bt, &cam_imask)) == 0) { + bt_free(bt); + return; + } + /* + * Protect ourself from spurrious interrupts during + * intialization and attach. We should really rely + * on interrupts during attach, but we don't have + * access to our interrupts during ISA probes, so until + * that changes, we mask our interrupts during attach + * too. + */ + opri = splcam(); + + if (bt_probe(bt) || bt_fetch_adapter_info(bt) || bt_init(bt)) { + bt_free(bt); + splx(opri); + return; /* XXX PCI code should take return status */ + } + + bt_attach(bt); + + splx(opri); + return; +} + +#endif /* NPCI > 0 */ |
