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freebsd-dev/sys/dev/iir/iir_pci.c
Scott Long f6b1c44d1f Mega busdma API commit. 
Add two new arguments to bus_dma_tag_create(): lockfunc and lockfuncarg.
Lockfunc allows a driver to provide a function for managing its locking
semantics while using busdma.  At the moment, this is used for the
asynchronous busdma_swi and callback mechanism.  Two lockfunc implementations
are provided: busdma_lock_mutex() performs standard mutex operations on the
mutex that is specified from lockfuncarg.  dftl_lock() is a panic
implementation and is defaulted to when NULL, NULL are passed to
bus_dma_tag_create().  The only time that NULL, NULL should ever be used is
when the driver ensures that bus_dmamap_load() will not be deferred.
Drivers that do not provide their own locking can pass
busdma_lock_mutex,&Giant args in order to preserve the former behaviour.

sparc64 and powerpc do not provide real busdma_swi functions, so this is
largely a noop on those platforms.  The busdma_swi on is64 is not properly
locked yet, so warnings will be emitted on this platform when busdma
callback deferrals happen.

If anyone gets panics or warnings from dflt_lock() being called, please
let me know right away.

Reviewed by:	tmm, gibbs
2003-07-01 15:52:06 +00:00

482 lines
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/* $FreeBSD$ */
/*
* Copyright (c) 2000-01 Intel Corporation
* 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.
*
*/
/*
* iir_pci.c: PCI Bus Attachment for Intel Integrated RAID Controller driver
*
* Written by: Achim Leubner <achim.leubner@intel.com>
* Fixes/Additions: Boji Tony Kannanthanam <boji.t.kannanthanam@intel.com>
*
* TODO:
*/
#ident "$Id: iir_pci.c 1.1 2001/05/22 20:14:12 achim Exp $"
/* #include "opt_iir.h" */
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/endian.h>
#include <sys/kernel.h>
#include <sys/lock.h>
#include <sys/mutex.h>
#include <sys/module.h>
#include <sys/bus.h>
#include <machine/bus_memio.h>
#include <machine/bus_pio.h>
#include <machine/bus.h>
#include <machine/resource.h>
#include <machine/clock.h>
#include <sys/rman.h>
#include <pci/pcireg.h>
#include <pci/pcivar.h>
#include <cam/scsi/scsi_all.h>
#include <dev/iir/iir.h>
/* Mapping registers for various areas */
#define PCI_DPMEM PCIR_MAPS
/* Product numbers for Fibre-Channel are greater than or equal to 0x200 */
#define GDT_PCI_PRODUCT_FC 0x200
/* PCI SRAM structure */
#define GDT_MAGIC 0x00 /* u_int32_t, controller ID from BIOS */
#define GDT_NEED_DEINIT 0x04 /* u_int16_t, switch between BIOS/driver */
#define GDT_SWITCH_SUPPORT 0x06 /* u_int8_t, see GDT_NEED_DEINIT */
#define GDT_OS_USED 0x10 /* u_int8_t [16], OS code per service */
#define GDT_FW_MAGIC 0x3c /* u_int8_t, controller ID from firmware */
#define GDT_SRAM_SZ 0x40
/* DPRAM PCI controllers */
#define GDT_DPR_IF 0x00 /* interface area */
#define GDT_6SR (0xff0 - GDT_SRAM_SZ)
#define GDT_SEMA1 0xff1 /* volatile u_int8_t, command semaphore */
#define GDT_IRQEN 0xff5 /* u_int8_t, board interrupts enable */
#define GDT_EVENT 0xff8 /* u_int8_t, release event */
#define GDT_IRQDEL 0xffc /* u_int8_t, acknowledge board interrupt */
#define GDT_DPRAM_SZ 0x1000
/* PLX register structure (new PCI controllers) */
#define GDT_CFG_REG 0x00 /* u_int8_t, DPRAM cfg. (2: < 1MB, 0: any) */
#define GDT_SEMA0_REG 0x40 /* volatile u_int8_t, command semaphore */
#define GDT_SEMA1_REG 0x41 /* volatile u_int8_t, status semaphore */
#define GDT_PLX_STATUS 0x44 /* volatile u_int16_t, command status */
#define GDT_PLX_SERVICE 0x46 /* u_int16_t, service */
#define GDT_PLX_INFO 0x48 /* u_int32_t [2], additional info */
#define GDT_LDOOR_REG 0x60 /* u_int8_t, PCI to local doorbell */
#define GDT_EDOOR_REG 0x64 /* volatile u_int8_t, local to PCI doorbell */
#define GDT_CONTROL0 0x68 /* u_int8_t, control0 register (unused) */
#define GDT_CONTROL1 0x69 /* u_int8_t, board interrupts enable */
#define GDT_PLX_SZ 0x80
/* DPRAM new PCI controllers */
#define GDT_IC 0x00 /* interface */
#define GDT_PCINEW_6SR (0x4000 - GDT_SRAM_SZ)
/* SRAM structure */
#define GDT_PCINEW_SZ 0x4000
/* i960 register structure (PCI MPR controllers) */
#define GDT_MPR_SEMA0 0x10 /* volatile u_int8_t, command semaphore */
#define GDT_MPR_SEMA1 0x12 /* volatile u_int8_t, status semaphore */
#define GDT_MPR_STATUS 0x14 /* volatile u_int16_t, command status */
#define GDT_MPR_SERVICE 0x16 /* u_int16_t, service */
#define GDT_MPR_INFO 0x18 /* u_int32_t [2], additional info */
#define GDT_MPR_LDOOR 0x20 /* u_int8_t, PCI to local doorbell */
#define GDT_MPR_EDOOR 0x2c /* volatile u_int8_t, locl to PCI doorbell */
#define GDT_EDOOR_EN 0x34 /* u_int8_t, board interrupts enable */
#define GDT_SEVERITY 0xefc /* u_int8_t, event severity */
#define GDT_EVT_BUF 0xf00 /* u_int8_t [256], event buffer */
#define GDT_I960_SZ 0x1000
/* DPRAM PCI MPR controllers */
#define GDT_I960R 0x00 /* 4KB i960 registers */
#define GDT_MPR_IC GDT_I960_SZ
/* i960 register area */
#define GDT_MPR_6SR (GDT_I960_SZ + 0x3000 - GDT_SRAM_SZ)
/* DPRAM struct. */
#define GDT_MPR_SZ (0x3000 - GDT_SRAM_SZ)
static int iir_pci_probe(device_t dev);
static int iir_pci_attach(device_t dev);
void gdt_pci_enable_intr(struct gdt_softc *);
void gdt_mpr_copy_cmd(struct gdt_softc *, struct gdt_ccb *);
u_int8_t gdt_mpr_get_status(struct gdt_softc *);
void gdt_mpr_intr(struct gdt_softc *, struct gdt_intr_ctx *);
void gdt_mpr_release_event(struct gdt_softc *);
void gdt_mpr_set_sema0(struct gdt_softc *);
int gdt_mpr_test_busy(struct gdt_softc *);
static device_method_t iir_pci_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, iir_pci_probe),
DEVMETHOD(device_attach, iir_pci_attach),
{ 0, 0}
};
static driver_t iir_pci_driver =
{
"iir",
iir_pci_methods,
sizeof(struct gdt_softc)
};
static devclass_t iir_devclass;
DRIVER_MODULE(iir, pci, iir_pci_driver, iir_devclass, 0, 0);
static int
iir_pci_probe(device_t dev)
{
if (pci_get_vendor(dev) == INTEL_VENDOR_ID &&
pci_get_device(dev) == INTEL_DEVICE_ID_IIR) {
device_set_desc(dev, "Intel Integrated RAID Controller");
return (0);
}
if (pci_get_vendor(dev) == GDT_VENDOR_ID &&
((pci_get_device(dev) >= GDT_DEVICE_ID_MIN &&
pci_get_device(dev) <= GDT_DEVICE_ID_MAX) ||
pci_get_device(dev) == GDT_DEVICE_ID_NEWRX)) {
device_set_desc(dev, "ICP Disk Array Controller");
return (0);
}
return (ENXIO);
}
static int
iir_pci_attach(device_t dev)
{
struct gdt_softc *gdt;
struct resource *io = NULL, *irq = NULL;
int retries, rid, error = 0;
void *ih;
u_int8_t protocol;
/* map DPMEM */
rid = PCI_DPMEM;
io = bus_alloc_resource(dev, SYS_RES_MEMORY, &rid, 0, ~0, 1, RF_ACTIVE);
if (io == NULL) {
device_printf(dev, "can't allocate register resources\n");
error = ENOMEM;
goto err;
}
/* get IRQ */
rid = 0;
irq = bus_alloc_resource(dev, SYS_RES_IRQ, &rid, 0, ~0, 1,
RF_ACTIVE | RF_SHAREABLE);
if (io == NULL) {
device_printf(dev, "can't find IRQ value\n");
error = ENOMEM;
goto err;
}
gdt = device_get_softc(dev);
bzero(gdt, sizeof(struct gdt_softc));
gdt->sc_init_level = 0;
gdt->sc_dpmemt = rman_get_bustag(io);
gdt->sc_dpmemh = rman_get_bushandle(io);
gdt->sc_dpmembase = rman_get_start(io);
gdt->sc_hanum = device_get_unit(dev);
gdt->sc_bus = pci_get_bus(dev);
gdt->sc_slot = pci_get_slot(dev);
gdt->sc_vendor = pci_get_vendor(dev);
gdt->sc_device = pci_get_device(dev);
gdt->sc_subdevice = pci_get_subdevice(dev);
gdt->sc_class = GDT_MPR;
/* no FC ctr.
if (gdt->sc_device >= GDT_PCI_PRODUCT_FC)
gdt->sc_class |= GDT_FC;
*/
/* initialize RP controller */
/* check and reset interface area */
bus_space_write_4(gdt->sc_dpmemt, gdt->sc_dpmemh, GDT_MPR_IC,
htole32(GDT_MPR_MAGIC));
if (bus_space_read_4(gdt->sc_dpmemt, gdt->sc_dpmemh, GDT_MPR_IC) !=
htole32(GDT_MPR_MAGIC)) {
printf("cannot access DPMEM at 0x%jx (shadowed?)\n",
(uintmax_t)gdt->sc_dpmembase);
error = ENXIO;
goto err;
}
bus_space_set_region_4(gdt->sc_dpmemt, gdt->sc_dpmemh, GDT_I960_SZ, htole32(0),
GDT_MPR_SZ >> 2);
/* Disable everything */
bus_space_write_1(gdt->sc_dpmemt, gdt->sc_dpmemh, GDT_EDOOR_EN,
bus_space_read_1(gdt->sc_dpmemt, gdt->sc_dpmemh,
GDT_EDOOR_EN) | 4);
bus_space_write_1(gdt->sc_dpmemt, gdt->sc_dpmemh, GDT_MPR_EDOOR, 0xff);
bus_space_write_1(gdt->sc_dpmemt, gdt->sc_dpmemh, GDT_MPR_IC + GDT_S_STATUS,
0);
bus_space_write_1(gdt->sc_dpmemt, gdt->sc_dpmemh, GDT_MPR_IC + GDT_CMD_INDEX,
0);
bus_space_write_4(gdt->sc_dpmemt, gdt->sc_dpmemh, GDT_MPR_IC + GDT_S_INFO,
htole32(gdt->sc_dpmembase));
bus_space_write_1(gdt->sc_dpmemt, gdt->sc_dpmemh, GDT_MPR_IC + GDT_S_CMD_INDX,
0xff);
bus_space_write_1(gdt->sc_dpmemt, gdt->sc_dpmemh, GDT_MPR_LDOOR, 1);
DELAY(20);
retries = GDT_RETRIES;
while (bus_space_read_1(gdt->sc_dpmemt, gdt->sc_dpmemh,
GDT_MPR_IC + GDT_S_STATUS) != 0xff) {
if (--retries == 0) {
printf("DEINIT failed\n");
error = ENXIO;
goto err;
}
DELAY(1);
}
protocol = (uint8_t)le32toh(bus_space_read_4(gdt->sc_dpmemt, gdt->sc_dpmemh,
GDT_MPR_IC + GDT_S_INFO));
bus_space_write_1(gdt->sc_dpmemt, gdt->sc_dpmemh, GDT_MPR_IC + GDT_S_STATUS,
0);
if (protocol != GDT_PROTOCOL_VERSION) {
printf("unsupported protocol %d\n", protocol);
error = ENXIO;
goto err;
}
/* special commnd to controller BIOS */
bus_space_write_4(gdt->sc_dpmemt, gdt->sc_dpmemh, GDT_MPR_IC + GDT_S_INFO,
htole32(0));
bus_space_write_4(gdt->sc_dpmemt, gdt->sc_dpmemh,
GDT_MPR_IC + GDT_S_INFO + sizeof (u_int32_t), htole32(0));
bus_space_write_4(gdt->sc_dpmemt, gdt->sc_dpmemh,
GDT_MPR_IC + GDT_S_INFO + 2 * sizeof (u_int32_t),
htole32(1));
bus_space_write_4(gdt->sc_dpmemt, gdt->sc_dpmemh,
GDT_MPR_IC + GDT_S_INFO + 3 * sizeof (u_int32_t),
htole32(0));
bus_space_write_1(gdt->sc_dpmemt, gdt->sc_dpmemh, GDT_MPR_IC + GDT_S_CMD_INDX,
0xfe);
bus_space_write_1(gdt->sc_dpmemt, gdt->sc_dpmemh, GDT_MPR_LDOOR, 1);
DELAY(20);
retries = GDT_RETRIES;
while (bus_space_read_1(gdt->sc_dpmemt, gdt->sc_dpmemh,
GDT_MPR_IC + GDT_S_STATUS) != 0xfe) {
if (--retries == 0) {
printf("initialization error\n");
error = ENXIO;
goto err;
}
DELAY(1);
}
bus_space_write_1(gdt->sc_dpmemt, gdt->sc_dpmemh, GDT_MPR_IC + GDT_S_STATUS,
0);
gdt->sc_ic_all_size = GDT_MPR_SZ;
gdt->sc_copy_cmd = gdt_mpr_copy_cmd;
gdt->sc_get_status = gdt_mpr_get_status;
gdt->sc_intr = gdt_mpr_intr;
gdt->sc_release_event = gdt_mpr_release_event;
gdt->sc_set_sema0 = gdt_mpr_set_sema0;
gdt->sc_test_busy = gdt_mpr_test_busy;
/* Allocate a dmatag representing the capabilities of this attachment */
/* XXX Should be a child of the PCI bus dma tag */
if (bus_dma_tag_create(/*parent*/NULL, /*alignemnt*/1, /*boundary*/0,
/*lowaddr*/BUS_SPACE_MAXADDR_32BIT,
/*highaddr*/BUS_SPACE_MAXADDR,
/*filter*/NULL, /*filterarg*/NULL,
/*maxsize*/BUS_SPACE_MAXSIZE_32BIT,
/*nsegments*/GDT_MAXSG,
/*maxsegsz*/BUS_SPACE_MAXSIZE_32BIT,
/*flags*/0, /*lockfunc*/busdma_lock_mutex,
/*lockarg*/&Giant, &gdt->sc_parent_dmat) != 0) {
error = ENXIO;
goto err;
}
gdt->sc_init_level++;
if (iir_init(gdt) != 0) {
iir_free(gdt);
error = ENXIO;
goto err;
}
/* Register with the XPT */
iir_attach(gdt);
/* associate interrupt handler */
if (bus_setup_intr( dev, irq, INTR_TYPE_CAM,
iir_intr, gdt, &ih )) {
device_printf(dev, "Unable to register interrupt handler\n");
error = ENXIO;
goto err;
}
gdt_pci_enable_intr(gdt);
return (0);
err:
if (irq)
bus_release_resource( dev, SYS_RES_IRQ, 0, irq );
/*
if (io)
bus_release_resource( dev, SYS_RES_MEMORY, rid, io );
*/
return (error);
}
/* Enable interrupts */
void
gdt_pci_enable_intr(struct gdt_softc *gdt)
{
GDT_DPRINTF(GDT_D_INTR, ("gdt_pci_enable_intr(%p) ", gdt));
switch(GDT_CLASS(gdt)) {
case GDT_MPR:
bus_space_write_1(gdt->sc_dpmemt, gdt->sc_dpmemh,
GDT_MPR_EDOOR, 0xff);
bus_space_write_1(gdt->sc_dpmemt, gdt->sc_dpmemh, GDT_EDOOR_EN,
bus_space_read_1(gdt->sc_dpmemt, gdt->sc_dpmemh,
GDT_EDOOR_EN) & ~4);
break;
}
}
/*
* MPR PCI controller-specific functions
*/
void
gdt_mpr_copy_cmd(struct gdt_softc *gdt, struct gdt_ccb *ccb)
{
u_int16_t cp_count = roundup(gdt->sc_cmd_len, sizeof (u_int32_t));
u_int16_t dp_offset = gdt->sc_cmd_off;
u_int16_t cmd_no = gdt->sc_cmd_cnt++;
GDT_DPRINTF(GDT_D_CMD, ("gdt_mpr_copy_cmd(%p) ", gdt));
gdt->sc_cmd_off += cp_count;
bus_space_write_2(gdt->sc_dpmemt, gdt->sc_dpmemh,
GDT_MPR_IC + GDT_COMM_QUEUE + cmd_no * GDT_COMM_Q_SZ + GDT_OFFSET,
htole16(GDT_DPMEM_COMMAND_OFFSET + dp_offset));
bus_space_write_2(gdt->sc_dpmemt, gdt->sc_dpmemh,
GDT_MPR_IC + GDT_COMM_QUEUE + cmd_no * GDT_COMM_Q_SZ + GDT_SERV_ID,
htole16(ccb->gc_service));
bus_space_write_region_4(gdt->sc_dpmemt, gdt->sc_dpmemh,
GDT_MPR_IC + GDT_DPR_CMD + dp_offset,
(u_int32_t *)gdt->sc_cmd, cp_count >> 2);
}
u_int8_t
gdt_mpr_get_status(struct gdt_softc *gdt)
{
GDT_DPRINTF(GDT_D_MISC, ("gdt_mpr_get_status(%p) ", gdt));
return bus_space_read_1(gdt->sc_dpmemt, gdt->sc_dpmemh, GDT_MPR_EDOOR);
}
void
gdt_mpr_intr(struct gdt_softc *gdt, struct gdt_intr_ctx *ctx)
{
int i;
GDT_DPRINTF(GDT_D_INTR, ("gdt_mpr_intr(%p) ", gdt));
if (ctx->istatus & 0x80) { /* error flag */
ctx->istatus &= ~0x80;
ctx->cmd_status = bus_space_read_2(gdt->sc_dpmemt,
gdt->sc_dpmemh, GDT_MPR_STATUS);
} else /* no error */
ctx->cmd_status = GDT_S_OK;
ctx->info =
bus_space_read_4(gdt->sc_dpmemt, gdt->sc_dpmemh, GDT_MPR_INFO);
ctx->service =
bus_space_read_2(gdt->sc_dpmemt, gdt->sc_dpmemh, GDT_MPR_SERVICE);
ctx->info2 =
bus_space_read_4(gdt->sc_dpmemt, gdt->sc_dpmemh,
GDT_MPR_INFO + sizeof (u_int32_t));
/* event string */
if (ctx->istatus == GDT_ASYNCINDEX) {
if (ctx->service != GDT_SCREENSERVICE &&
(gdt->sc_fw_vers & 0xff) >= 0x1a) {
gdt->sc_dvr.severity =
bus_space_read_1(gdt->sc_dpmemt,gdt->sc_dpmemh, GDT_SEVERITY);
for (i = 0; i < 256; ++i) {
gdt->sc_dvr.event_string[i] =
bus_space_read_1(gdt->sc_dpmemt, gdt->sc_dpmemh,
GDT_EVT_BUF + i);
if (gdt->sc_dvr.event_string[i] == 0)
break;
}
}
}
bus_space_write_1(gdt->sc_dpmemt, gdt->sc_dpmemh, GDT_MPR_EDOOR, 0xff);
bus_space_write_1(gdt->sc_dpmemt, gdt->sc_dpmemh, GDT_MPR_SEMA1, 0);
}
void
gdt_mpr_release_event(struct gdt_softc *gdt)
{
GDT_DPRINTF(GDT_D_MISC, ("gdt_mpr_release_event(%p) ", gdt));
bus_space_write_1(gdt->sc_dpmemt, gdt->sc_dpmemh, GDT_MPR_LDOOR, 1);
}
void
gdt_mpr_set_sema0(struct gdt_softc *gdt)
{
GDT_DPRINTF(GDT_D_MISC, ("gdt_mpr_set_sema0(%p) ", gdt));
bus_space_write_1(gdt->sc_dpmemt, gdt->sc_dpmemh, GDT_MPR_SEMA0, 1);
}
int
gdt_mpr_test_busy(struct gdt_softc *gdt)
{
GDT_DPRINTF(GDT_D_MISC, ("gdt_mpr_test_busy(%p) ", gdt));
return (bus_space_read_1(gdt->sc_dpmemt, gdt->sc_dpmemh,
GDT_MPR_SEMA0) & 1);
}
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