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freebsd-dev/sys/dev/dpt/dpt_pci.c
Eivind Eklund e448e98a36 o Return error when the controller can't accept commands. 
o Make driver less chatty on boot (only announce version under
  bootverbose)

Submitted by:	Simon Shapiro <shimon@simon-shapiro.org>
1998-06-02 00:32:38 +00:00

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/*
* Copyright (c) 1997 by Simon Shapiro
* 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. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. 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.
*
*/
/*
* dptpci.c: Pseudo device drivers for DPT on PCI on FreeBSD
*
* caveats: We may need an eisa and an isa files too
*/
#ident "$Id: dpt_pci.c,v 1.5 1998/03/11 00:30:16 julian Exp $"
#include "opt_devfs.h"
#include "opt_dpt.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/malloc.h>
#include <sys/buf.h>
#include <sys/kernel.h>
#include <scsi/scsiconf.h>
#include <pci/pcireg.h>
#include <pci/pcivar.h>
#include <sys/dpt.h>
#include <pci/dpt_pci.h>
#include <vm/vm.h>
#include <vm/pmap.h>
#define PCI_BASEADR0 PCI_MAP_REG_START /* I/O Address */
#define PCI_BASEADR1 PCI_MAP_REG_START + 4 /* Mem I/O Address */
#define ISA_PRIMARY_WD_ADDRESS 0x1f8
/* Global variables */
/* Function Prototypes */
static char *dpt_pci_probe(pcici_t tag, pcidi_t type);
static void dpt_pci_attach(pcici_t config_id, int unit);
static int dpt_pci_shutdown(int foo, int bar);
extern struct cdevsw dpt_cdevsw;
static struct pci_device dpt_pci_driver =
{
"dpt",
dpt_pci_probe,
dpt_pci_attach,
&dpt_unit,
dpt_pci_shutdown
};
DATA_SET(pcidevice_set, dpt_pci_driver);
/*
* Probe the PCI device.
* Some of this work will have to be duplicated in _attach
* because we do not know for sure how the two relate.
*/
static char *
dpt_pci_probe(pcici_t tag, pcidi_t type)
{
static char silly_message[64];
static int already_announced = 0;
u_int32_t dpt_id;
u_int32_t command;
u_int32_t class;
#define pci_device tag.cfg2.port
#define pci_bus tag.cfg2.forward
#define pci_index tag.cfg2.enable
#ifndef PCI_COMMAND_MASTER_ENABLE
#define PCI_COMMAND_MASTER_ENABLE 0x00000004
#endif
#ifndef PCI_SUBCLASS_MASS_STORAGE_SCSI
#define PCI_SUBCLASS_MASS_STORAGE_SCSI 0x00000000
#endif
if ( bootverbose && !already_announced ) {
printf("DPT: PCI SCSI HBA Driver, version %d.%d.%d\n",
DPT_RELEASE, DPT_VERSION, DPT_PATCH);
++already_announced;
}
if ((dpt_id = (type & 0xffff0000) >> 16) == DPT_DEVICE_ID) {
/* This one appears to belong to us, but what is it? */
class = pci_conf_read(tag, PCI_CLASS_REG);
if (((class & PCI_CLASS_MASK) == PCI_CLASS_MASS_STORAGE) &&
((class & PCI_SUBCLASS_MASK) == PCI_SUBCLASS_MASS_STORAGE_SCSI) ) {
/* It is a SCSI storage device. How do talk to it? */
command = pci_conf_read(tag, PCI_COMMAND_STATUS_REG);
#ifdef DPT_ALLOW_MEMIO
if ( ((command & PCI_COMMAND_IO_ENABLE) == 0)
&& ((command & PCI_COMMAND_MEM_ENABLE) == 0) )
#else
if ( ((command & PCI_COMMAND_IO_ENABLE) == 0) )
#endif /* DPT_ALLOW_MEMIO */
{
printf("DPT: Cannot map the controller registers :-(\n");
return(NULL);
}
} else {
printf("DPT: Device is not Mass Storage, nor SCSI controller\n");
return(NULL);
}
command = pci_conf_read(tag, PCI_COMMAND_STATUS_REG);
if ( (command & PCI_COMMAND_MASTER_ENABLE) == 0 ) {
printf("DPT: Cannot be functional without BUSMASTER. :-(\n");
return (NULL);
}
#ifdef DPT_DEBUG_PCI
printf("DPT: Controller is %s mapable\n",
(command & PCI_COMMAND_MEM_ENABLE)
? "MEMORY"
: ((command & PCI_COMMAND_IO_ENABLE)
? "I/O"
: "NOT"));
#endif
return ("DPT Caching SCSI RAID Controller");
}
#if defined(DPT_DEBUG_PCI) && defined(DPT_DEBUG_WARN)
printf("DPT: Unknown Controller Type %x Found\n", dpt_id);
printf(" (class = %x, command = %x\n", class, command);
#endif
return (NULL);
}
static void
dpt_pci_attach(pcici_t config_id, int unit)
{
int ospl;
int result;
int ndx;
vm_offset_t vaddr;
vm_offset_t paddr;
u_int16_t io_base;
u_int32_t command;
u_int32_t data;
dpt_conf_t *config;
dpt_softc_t *dpt;
if (dpt_controllers_present >= DPT_MAX_ADAPTERS) {
printf("dpt%d: More than %d Adapters found! Adapter rejected\n",
unit, DPT_MAX_ADAPTERS);
return;
}
if ((dpt = (dpt_softc_t *) malloc(sizeof(dpt_softc_t), M_DEVBUF, M_NOWAIT))
== NULL) {
printf("dpt%d: Failed to allocate %d bytes for a DPT softc\n",
unit, sizeof(dpt_softc_t));
return;
}
/*
* Initialize the queues. See dpt.h for details. We do this here,
* as we may get hit with interrupts at any moment and we want to
* have a minimal structure in place to handle them. We also want to
* register interrupts correctly. To do so, we need a valid dpt
* structure. To have that, we need this minimal setup here.
*/
bzero(dpt, sizeof(dpt_softc_t));
TAILQ_INIT(&dpt->free_ccbs);
TAILQ_INIT(&dpt->waiting_ccbs);
TAILQ_INIT(&dpt->submitted_ccbs);
TAILQ_INIT(&dpt->completed_ccbs);
if (TAILQ_EMPTY(&dpt_softc_list)) {
TAILQ_INIT(&dpt_softc_list);
}
TAILQ_INSERT_TAIL(&dpt_softc_list, dpt, links);
dpt->queue_status = DPT_QUEUES_NONE_ACTIVE;
dpt->commands_processed = 0;
#ifdef DPT_MEASURE_PERFORMANCE
/* Zero out all command counters */
bzero((void *)&dpt->performance, sizeof(dpt_perf_t));
for ( ndx = 0; ndx < 256; ndx ++ )
dpt->performance.min_command_time[ndx] = BIG_ENOUGH;
dpt->performance.min_intr_time = BIG_ENOUGH;
dpt->performance.min_waiting_time = BIG_ENOUGH;
dpt->performance.min_submit_time = BIG_ENOUGH;
dpt->performance.min_complete_time = BIG_ENOUGH;
dpt->performance.min_eata_tries = BIG_ENOUGH;
for (ndx = 0; ndx < 10; ndx++ ) {
dpt->performance.read_by_size_min_time[ndx] = BIG_ENOUGH;
dpt->performance.write_by_size_min_time[ndx] = BIG_ENOUGH;
}
#endif /* DPT_MEASURE_PERFORMANCE */
dpt->unit = unit;
dpt->handle_interrupts = 0; /*
* Do not set to 1 until all
* initialization is done
*/
dpt->v_membase = NULL;
dpt->p_membase = NULL;
io_base = 0;
vaddr = 0;
paddr = 0;
command = pci_conf_read(config_id, PCI_COMMAND_STATUS_REG);
#ifdef DPT_ALLOW_MEMIO
if ( (command & PCI_COMMAND_MEM_ENABLE) == 0 ) {
#ifdef DPT_DEBUG_PCI
printf("dpt%d: Cannot be memory mapped\n", unit);
#endif
force_io:
if ((command & PCI_COMMAND_IO_ENABLE) == 0 ) {
printf("dpt%d: Cannot be I/O mapped either :-(\n", unit);
free(dpt, M_DEVBUF);
return;
} else {
data = pci_conf_read(config_id, PCI_MAP_REG_START);
if ( pci_map_port(config_id, PCI_MAP_REG_START, &io_base) == 0 ) {
#ifdef DPT_DEBUG_ERROR
printf("dpt%d: Failed to map as I/O :-(\n", unit);
#endif
free(dpt, M_DEVBUF);
return;
} else {
dpt->io_base = io_base + 0x10;
#ifdef DPT_DEBUG_PCI
printf("dpt%d: Mapped registers to I/O space, "
"starting at %x\n",
dpt->unit, dpt->io_base);
#endif
}
}
} else {
if ( pci_map_mem(config_id, PCI_MAP_REG_START + 4, &vaddr,
&paddr) == 0 ) {
#ifdef DPT_DEBUG_ERROR
printf("dpt%d: Failed to map as MEMORY.\n"
" Attemting to force I/O mapping\n", unit);
#endif
goto force_io;
} else {
dpt->v_membase = (volatile u_int8_t *)(vaddr + 0x10);
dpt->p_membase = (volatile u_int8_t *)(paddr + 0x10);
#ifdef DPT_DEBUG_PCI
printf("dpt%d: Mapped registers to MEMORY space, "
"starting at %x/%x\n",
dpt->unit, dpt->v_membase, dpt->p_membase);
#endif
}
}
#else /* !DPT_ALLOW_MEMIO */
data = pci_conf_read(config_id, PCI_MAP_REG_START);
if ((command & PCI_COMMAND_IO_ENABLE) == 0 ) {
printf("dpt%d: Registers cannot be I/O mapped :-(\n", unit);
free(dpt, M_DEVBUF);
return;
} else {
if ( pci_map_port(config_id, PCI_MAP_REG_START, &io_base) == 0 ) {
#ifdef DPT_DEBUG_ERROR
printf("dpt%d: Failed to map registers as I/O :-(\n", unit);
#endif
free(dpt, M_DEVBUF);
return;
} else {
dpt->io_base = io_base + 0x10;
#ifdef DPT_DEBUG_PCI
printf("dpt%d: Mapped registers to I/O space, starting at %x\n",
dpt->unit, dpt->io_base);
#endif
}
}
#endif /* !DPT_ALLOW_MEMIO */
if (pci_map_int(config_id, dpt_intr, (void *)dpt, &cam_imask) == 0) {
#ifdef DPT_DEBUG_WARN
printf("dpt%d: Failed to map interrupt :-(\n", unit);
#endif
free(dpt, M_DEVBUF);
return;
}
/* If the DPT is mapped as an IDE controller, let it be IDE controller */
if (io_base == (ISA_PRIMARY_WD_ADDRESS)) {
#ifdef DPT_DEBUG_WARN
printf("dpt%d: Mapped as an IDE controller. "
"Disabling SCSI setup\n", unit);
#endif
free(dpt, M_DEVBUF);
return;
} else {
if ((config = dpt_get_conf(dpt, 0xc1, 7,
sizeof(dpt_conf_t), 1)) == NULL) {
#ifdef DPT_DEBUG_ERROR
printf("dpt%d: Failed to get board configuration (%x)\n",
unit, BaseRegister(dpt));
#endif
free(dpt, M_DEVBUF);
return;
}
}
dpt->max_id = config->MAX_ID;
dpt->max_lun = config->MAX_LUN;
dpt->irq = config->IRQ;
dpt->channels = config->MAX_CHAN;
dpt->dma_channel = (8 - config->DMA_channel) & 7;
#ifdef DPT_DEBUG_SETUP
printf("dpt%d: max_id = %d, max_chan = %d, max_lun = %d\n",
dpt->unit, dpt->max_id, dpt->channels, dpt->max_lun);
#endif
if (result = dpt_setup(dpt, config)) {
free(config, M_TEMP);
free(dpt, M_DEVBUF);
printf("dpt%d: dpt_setup failed (%d). Driver Disabled :-(\n",
dpt->unit, result);
} else {
/* clean up the informational data, and display */
char clean_vendor[9];
char clean_model[17];
char clean_firmware[5];
char clean_protocol[5];
char clean_other[7];
int ndx;
strncpy(clean_other, dpt->board_data.otherData, 8);
clean_other[6] = '\0';
for (ndx = 5; ndx >= 0; ndx--) {
if (clean_other[ndx] == ' ')
clean_other[ndx] = '\0';
else
break;
}
strncpy(dpt->board_data.otherData, clean_other, 6);
strncpy(clean_vendor, dpt->board_data.vendor, 8);
clean_vendor[8] = '\0';
for (ndx = 7; ndx >= 0; ndx--) {
if (clean_vendor[ndx] == ' ')
clean_vendor[ndx] = '\0';
else
break;
}
strncpy(dpt->board_data.vendor, clean_vendor, 8);
strncpy(clean_model, dpt->board_data.modelNum, 16);
clean_model[16] = '\0';
for (ndx = 15; ndx >= 0; ndx--) {
if (clean_model[ndx] == ' ')
clean_model[ndx] = '\0';
else
break;
}
strncpy(dpt->board_data.modelNum, clean_model, 16);
strncpy(clean_firmware, dpt->board_data.firmware, 4);
clean_firmware[4] = '\0';
for (ndx = 3; ndx >= 0; ndx--) {
if (clean_firmware[ndx] == ' ')
clean_firmware[ndx] = '\0';
else
break;
}
strncpy(dpt->board_data.firmware, clean_firmware, 4);
strncpy(clean_protocol, dpt->board_data.protocol, 4);
clean_protocol[4] = '\0';
for (ndx = 3; ndx >= 0; ndx--) {
if (clean_protocol[ndx] == ' ')
clean_protocol[ndx] = '\0';
else
break;
}
strncpy(dpt->board_data.protocol, clean_protocol, 4);
dpt_detect_cache(dpt);
printf("dpt%d: %s type %x, model %s firmware %s, Protocol %s \n"
" on port %x with %s cache. LED = %s\n",
dpt->unit, clean_vendor, dpt->board_data.deviceType,
clean_model, clean_firmware, clean_protocol, dpt->io_base,
(dpt->cache_type == DPT_NO_CACHE)
? "Disabled"
: (dpt->cache_type == DPT_CACHE_WRITETHROUGH)
? "Write-Through"
: "Write-Back",
i2bin(dpt_blinking_led(dpt), 8));
printf("dpt%d: Enabled Options:\n", dpt->unit);
#ifdef DPT_LOST_IRQ
printf(" Recover Lost Interrupts\n");
#endif
#ifdef DPT_VERIFY_HINTR
printf(" Verify Lost Transactions\n");
#endif
#ifdef DPT_RESTRICTED_FREELIST
printf(" Restrict the Freelist Size\n");
#endif
#ifdef DPT_MEASURE_PERFORMANCE
printf(" Collect Metrics\n");
#endif
#ifdef DPT_FREELIST_IS_STACK
printf(" Optimize CPU Cache\n");
#endif
#ifdef DPT_HANDLE_TIMEOUTS
printf(" Handle Timeouts\n");
#endif
#ifdef DPT_ALLOW_MEMIO
printf(" Allow I/O to be Memeory Mapped\n");
#endif
#ifdef DPT_HINTR_CHECK_SOFTC
printf(" Validate SoftC at Interrupt\n");
#endif
/* register shutdown handlers */
result = at_shutdown((bootlist_fn)dpt_shutdown, (void *)dpt,
SHUTDOWN_POST_SYNC);
switch ( result ) {
case 0:
#ifdef DPT_DEBUG_SHUTDOWN
printf("dpt%d: Shutdown handler registered\n", dpt->unit);
#endif
break;
default:
#ifdef DPT_DEBUG_WARN
printf("dpt%d: Failed to register shutdown handler (%d)\n",
dpt->unit, result);
#endif
break;
}
/* Attach SCSI devices */
dpt_attach(dpt);
++dpt_controllers_present;
/*
* Now we create the DEVFS entry.
* This would be normally done from dpt_control.c,
* But since it appears to be called before we do here,
* We never get the entries made.
*/
#ifdef DEVFS
dpt->devfs_data_token = devfs_add_devswf(&dpt_cdevsw, dpt->unit, DV_CHR,
UID_ROOT, GID_WHEEL, 0600,
"dpt%d", dpt->unit);
dpt->devfs_ctl_token = devfs_add_devswf(&dpt_cdevsw,
dpt->unit | SCSI_CONTROL_MASK,
DV_CHR,
UID_ROOT, GID_WHEEL, 0600,
"dpt%d.ctl", dpt->unit);
#endif
}
}
static int
dpt_pci_shutdown(int foo, int bar)
{
#ifdef DPT_DEBUG_WARN
printf("dpt_pci_shutdown(%x, %x)\n", foo, bar);
#endif
return (0);
}
/* End of the DPT PCI part of the driver */
/*
* Hello emacs, these are the
* Local Variables:
* c-indent-level: 8
* c-continued-statement-offset: 8
* c-continued-brace-offset: 0
* c-brace-offset: -8
* c-brace-imaginary-offset: 0
* c-argdecl-indent: 8
* c-label-offset: -8
* c++-hanging-braces: 1
* c++-access-specifier-offset: -8
* c++-empty-arglist-indent: 8
* c++-friend-offset: 0
* End:
*/
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