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freebsd-nq/sys/dev/ida/ida_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

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/*-
* Copyright (c) 1999,2000 Jonathan Lemon
* 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.
* 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.
*
* 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/bio.h>
#include <sys/bus.h>
#include <sys/conf.h>
#include <machine/bus_memio.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 <geom/geom_disk.h>
#include <dev/ida/idavar.h>
#include <dev/ida/idareg.h>
#define IDA_PCI_MAX_DMA_ADDR 0xFFFFFFFF
#define IDA_PCI_MAX_DMA_COUNT 0xFFFFFFFF
#define IDA_PCI_MEMADDR (PCIR_MAPS + 4) /* Mem I/O Address */
#define IDA_DEVICEID_SMART 0xAE100E11
#define IDA_DEVICEID_DEC_SMART 0x00461011
#define IDA_DEVICEID_NCR_53C1510 0x00101000
static int
ida_v3_fifo_full(struct ida_softc *ida)
{
return (ida_inl(ida, R_CMD_FIFO) == 0);
}
static void
ida_v3_submit(struct ida_softc *ida, struct ida_qcb *qcb)
{
ida_outl(ida, R_CMD_FIFO, qcb->hwqcb_busaddr);
}
static bus_addr_t
ida_v3_done(struct ida_softc *ida)
{
return (ida_inl(ida, R_DONE_FIFO));
}
static int
ida_v3_int_pending(struct ida_softc *ida)
{
return (ida_inl(ida, R_INT_PENDING));
}
static void
ida_v3_int_enable(struct ida_softc *ida, int enable)
{
if (enable)
ida->flags |= IDA_INTERRUPTS;
else
ida->flags &= ~IDA_INTERRUPTS;
ida_outl(ida, R_INT_MASK, enable ? INT_ENABLE : INT_DISABLE);
}
static int
ida_v4_fifo_full(struct ida_softc *ida)
{
return (ida_inl(ida, R_42XX_REQUEST) != 0);
}
static void
ida_v4_submit(struct ida_softc *ida, struct ida_qcb *qcb)
{
ida_outl(ida, R_42XX_REQUEST, qcb->hwqcb_busaddr);
}
static bus_addr_t
ida_v4_done(struct ida_softc *ida)
{
bus_addr_t completed;
completed = ida_inl(ida, R_42XX_REPLY);
if (completed == -1)
return (0); /* fifo is empty */
ida_outl(ida, R_42XX_REPLY, 0); /* confirm read */
return (completed);
}
static int
ida_v4_int_pending(struct ida_softc *ida)
{
return (ida_inl(ida, R_42XX_STATUS) & STATUS_42XX_INT_PENDING);
}
static void
ida_v4_int_enable(struct ida_softc *ida, int enable)
{
if (enable)
ida->flags |= IDA_INTERRUPTS;
else
ida->flags &= ~IDA_INTERRUPTS;
ida_outl(ida, R_42XX_INT_MASK,
enable ? INT_ENABLE_42XX : INT_DISABLE_42XX);
}
static struct ida_access ida_v3_access = {
ida_v3_fifo_full,
ida_v3_submit,
ida_v3_done,
ida_v3_int_pending,
ida_v3_int_enable,
};
static struct ida_access ida_v4_access = {
ida_v4_fifo_full,
ida_v4_submit,
ida_v4_done,
ida_v4_int_pending,
ida_v4_int_enable,
};
static struct ida_board board_id[] = {
{ 0x40300E11, "Compaq SMART-2/P array controller",
&ida_v3_access, 0 },
{ 0x40310E11, "Compaq SMART-2SL array controller",
&ida_v3_access, 0 },
{ 0x40320E11, "Compaq Smart Array 3200 controller",
&ida_v3_access, 0 },
{ 0x40330E11, "Compaq Smart Array 3100ES controller",
&ida_v3_access, 0 },
{ 0x40340E11, "Compaq Smart Array 221 controller",
&ida_v3_access, 0 },
{ 0x40400E11, "Compaq Integrated Array controller",
&ida_v4_access, IDA_FIRMWARE },
{ 0x40480E11, "Compaq RAID LC2 controller",
&ida_v4_access, IDA_FIRMWARE },
{ 0x40500E11, "Compaq Smart Array 4200 controller",
&ida_v4_access, 0 },
{ 0x40510E11, "Compaq Smart Array 4250ES controller",
&ida_v4_access, 0 },
{ 0x40580E11, "Compaq Smart Array 431 controller",
&ida_v4_access, 0 },
{ 0, "", 0, 0 },
};
static int ida_pci_probe(device_t dev);
static int ida_pci_attach(device_t dev);
static device_method_t ida_pci_methods[] = {
DEVMETHOD(device_probe, ida_pci_probe),
DEVMETHOD(device_attach, ida_pci_attach),
DEVMETHOD(device_detach, ida_detach),
DEVMETHOD(bus_print_child, bus_generic_print_child),
{ 0, 0 }
};
static driver_t ida_pci_driver = {
"ida",
ida_pci_methods,
sizeof(struct ida_softc)
};
static devclass_t ida_devclass;
static struct ida_board *
ida_pci_match(device_t dev)
{
int i;
u_int32_t id, sub_id;
id = pci_get_devid(dev);
sub_id = pci_get_subdevice(dev) << 16 | pci_get_subvendor(dev);
if (id == IDA_DEVICEID_SMART ||
id == IDA_DEVICEID_DEC_SMART ||
id == IDA_DEVICEID_NCR_53C1510) {
for (i = 0; board_id[i].board; i++)
if (board_id[i].board == sub_id)
return (&board_id[i]);
}
return (NULL);
}
static int
ida_pci_probe(device_t dev)
{
struct ida_board *board = ida_pci_match(dev);
if (board != NULL) {
device_set_desc(dev, board->desc);
return (0);
}
return (ENXIO);
}
static int
ida_pci_attach(device_t dev)
{
struct ida_board *board = ida_pci_match(dev);
u_int32_t id = pci_get_devid(dev);
struct ida_softc *ida;
u_int command;
int error, rid;
command = pci_read_config(dev, PCIR_COMMAND, 1);
/*
* it appears that this board only does MEMIO access.
*/
if ((command & PCIM_CMD_MEMEN) == 0) {
device_printf(dev, "Only memory mapped I/O is supported\n");
return (ENXIO);
}
ida = (struct ida_softc *)device_get_softc(dev);
ida->dev = dev;
ida->cmd = *board->accessor;
ida->flags = board->flags;
ida->regs_res_type = SYS_RES_MEMORY;
ida->regs_res_id = IDA_PCI_MEMADDR;
if (id == IDA_DEVICEID_DEC_SMART)
ida->regs_res_id = PCIR_MAPS;
ida->regs = bus_alloc_resource(dev, ida->regs_res_type,
&ida->regs_res_id, 0, ~0, 1, RF_ACTIVE);
if (ida->regs == NULL) {
device_printf(dev, "can't allocate memory resources\n");
return (ENOMEM);
}
error = bus_dma_tag_create(/*parent*/NULL, /*alignment*/1,
/*boundary*/0, /*lowaddr*/BUS_SPACE_MAXADDR_32BIT,
/*highaddr*/BUS_SPACE_MAXADDR, /*filter*/NULL, /*filterarg*/NULL,
/*maxsize*/MAXBSIZE, /*nsegments*/IDA_NSEG,
/*maxsegsize*/BUS_SPACE_MAXSIZE_32BIT, /*flags*/BUS_DMA_ALLOCNOW,
/*lockfunc*/NULL, /*lockarg*/NULL, &ida->parent_dmat);
if (error != 0) {
device_printf(dev, "can't allocate DMA tag\n");
ida_free(ida);
return (ENOMEM);
}
rid = 0;
ida->irq_res_type = SYS_RES_IRQ;
ida->irq = bus_alloc_resource(dev, ida->irq_res_type, &rid,
0, ~0, 1, RF_ACTIVE | RF_SHAREABLE);
if (ida->irq == NULL) {
ida_free(ida);
return (ENOMEM);
}
error = bus_setup_intr(dev, ida->irq, INTR_TYPE_BIO | INTR_ENTROPY,
ida_intr, ida, &ida->ih);
if (error) {
device_printf(dev, "can't setup interrupt\n");
ida_free(ida);
return (ENOMEM);
}
error = ida_init(ida);
if (error) {
ida_free(ida);
return (error);
}
ida_attach(ida);
ida->flags |= IDA_ATTACHED;
return (0);
}
DRIVER_MODULE(ida, pci, ida_pci_driver, ida_devclass, 0, 0);
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