static int
amr_pci_attach(device_t dev)
{
struct amr_softc *sc;
struct amr_ident *id;
int rid, rtype, error;
debug_called(1);
/*
* Initialise softc.
*/
sc = device_get_softc(dev);
bzero(sc, sizeof(*sc));
sc->amr_dev = dev;
/* assume failure is 'not configured' */
error = ENXIO;
/*
* Determine board type.
*/
if ((id = amr_find_ident(dev)) == NULL)
return (ENXIO);
if (id->flags & AMR_ID_QUARTZ) {
sc->amr_type |= AMR_TYPE_QUARTZ;
}
if ((amr_force_sg32 == 0) && (id->flags & AMR_ID_DO_SG64) &&
(sizeof(vm_paddr_t) > 4)) {
device_printf(dev, "Using 64-bit DMA\n");
sc->amr_type |= AMR_TYPE_SG64;
}
/* force the busmaster enable bit on */
pci_enable_busmaster(dev);
/*
* Allocate the PCI register window.
*/
rid = PCIR_BAR(0);
rtype = AMR_IS_QUARTZ(sc) ? SYS_RES_MEMORY : SYS_RES_IOPORT;
sc->amr_reg = bus_alloc_resource_any(dev, rtype, &rid, RF_ACTIVE);
if (sc->amr_reg == NULL) {
device_printf(sc->amr_dev, "can't allocate register window\n");
goto out;
}
sc->amr_btag = rman_get_bustag(sc->amr_reg);
sc->amr_bhandle = rman_get_bushandle(sc->amr_reg);
/*
* Allocate and connect our interrupt.
*/
rid = 0;
sc->amr_irq = bus_alloc_resource_any(sc->amr_dev, SYS_RES_IRQ, &rid,
RF_SHAREABLE | RF_ACTIVE);
if (sc->amr_irq == NULL) {
device_printf(sc->amr_dev, "can't allocate interrupt\n");
goto out;
}
if (bus_setup_intr(sc->amr_dev, sc->amr_irq,
INTR_TYPE_BIO | INTR_ENTROPY | INTR_MPSAFE, NULL, amr_pci_intr,
sc, &sc->amr_intr)) {
device_printf(sc->amr_dev, "can't set up interrupt\n");
goto out;
}
debug(2, "interrupt attached");
/* assume failure is 'out of memory' */
error = ENOMEM;
/*
* Allocate the parent bus DMA tag appropriate for PCI.
*/
if (bus_dma_tag_create(bus_get_dma_tag(dev), /* PCI parent */
1, 0, /* alignment,boundary */
AMR_IS_SG64(sc) ?
BUS_SPACE_MAXADDR :
BUS_SPACE_MAXADDR_32BIT, /* lowaddr */
BUS_SPACE_MAXADDR, /* highaddr */
NULL, NULL, /* filter, filterarg */
BUS_SPACE_MAXSIZE, /* maxsize */
BUS_SPACE_UNRESTRICTED, /* nsegments */
BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */
0, /* flags */
NULL, NULL, /* lockfunc, lockarg */
&sc->amr_parent_dmat)) {
device_printf(dev, "can't allocate parent DMA tag\n");
goto out;
}
/*
* Create DMA tag for mapping buffers into controller-addressable space.
*/
if (bus_dma_tag_create(sc->amr_parent_dmat, /* parent */
1, 0, /* alignment,boundary */
BUS_SPACE_MAXADDR_32BIT, /* lowaddr */
BUS_SPACE_MAXADDR, /* highaddr */
NULL, NULL, /* filter, filterarg */
DFLTPHYS, /* maxsize */
AMR_NSEG, /* nsegments */
BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */
0, /* flags */
busdma_lock_mutex, /* lockfunc */
&sc->amr_list_lock, /* lockarg */
&sc->amr_buffer_dmat)) {
device_printf(sc->amr_dev, "can't allocate buffer DMA tag\n");
goto out;
}
if (bus_dma_tag_create(sc->amr_parent_dmat, /* parent */
1, 0, /* alignment,boundary */
BUS_SPACE_MAXADDR, /* lowaddr */
BUS_SPACE_MAXADDR, /* highaddr */
NULL, NULL, /* filter, filterarg */
DFLTPHYS, /* maxsize */
AMR_NSEG, /* nsegments */
BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */
0, /* flags */
busdma_lock_mutex, /* lockfunc */
&sc->amr_list_lock, /* lockarg */
&sc->amr_buffer64_dmat)) {
device_printf(sc->amr_dev, "can't allocate buffer DMA tag\n");
goto out;
}
debug(2, "dma tag done");
/*
* Allocate and set up mailbox in a bus-visible fashion.
*/
mtx_init(&sc->amr_list_lock, "AMR List Lock", NULL, MTX_DEF);
mtx_init(&sc->amr_hw_lock, "AMR HW Lock", NULL, MTX_DEF);
if ((error = amr_setup_mbox(sc)) != 0)
goto out;
debug(2, "mailbox setup");
/*
* Build the scatter/gather buffers.
*/
if ((error = amr_sglist_map(sc)) != 0)
goto out;
debug(2, "s/g list mapped");
if ((error = amr_ccb_map(sc)) != 0)
goto out;
debug(2, "ccb mapped");
/*
* Do bus-independant initialisation, bring controller online.
*/
error = amr_attach(sc);
out:
if (error)
amr_pci_free(sc);
return(error);
}
static int
amr_sglist_map(struct amr_softc *sc)
{
size_t segsize;
void *p;
int error;
debug_called(1);
/*
* Create a single tag describing a region large enough to hold all of
* the s/g lists we will need.
*
* Note that we could probably use AMR_LIMITCMD here, but that may become
* tunable.
*/
if (AMR_IS_SG64(sc))
segsize = sizeof(struct amr_sg64entry) * AMR_NSEG * AMR_MAXCMD;
else
segsize = sizeof(struct amr_sgentry) * AMR_NSEG * AMR_MAXCMD;
error = bus_dma_tag_create(sc->amr_parent_dmat, /* parent */
512, 0, /* alignment,boundary */
BUS_SPACE_MAXADDR_32BIT, /* lowaddr */
BUS_SPACE_MAXADDR, /* highaddr */
NULL, NULL, /* filter, filterarg */
segsize, 1, /* maxsize, nsegments */
BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */
0, /* flags */
NULL, NULL, /* lockfunc, lockarg */
&sc->amr_sg_dmat);
if (error != 0) {
device_printf(sc->amr_dev, "can't allocate scatter/gather DMA tag\n");
return(ENOMEM);
}
/*
* Allocate enough s/g maps for all commands and permanently map them into
* controller-visible space.
*
* XXX this assumes we can get enough space for all the s/g maps in one
* contiguous slab. We may need to switch to a more complex arrangement
* where we allocate in smaller chunks and keep a lookup table from slot
* to bus address.
*
* XXX HACK ALERT: at least some controllers don't like the s/g memory
* being allocated below 0x2000. We leak some memory if
* we get some below this mark and allocate again. We
* should be able to avoid this with the tag setup, but
* that does't seem to work.
*/
retry:
error = bus_dmamem_alloc(sc->amr_sg_dmat, (void **)&p, BUS_DMA_NOWAIT, &sc->amr_sg_dmamap);
if (error) {
device_printf(sc->amr_dev, "can't allocate s/g table\n");
return(ENOMEM);
}
bus_dmamap_load(sc->amr_sg_dmat, sc->amr_sg_dmamap, p, segsize, amr_sglist_helper, &sc->amr_sgbusaddr, 0);
if (sc->amr_sgbusaddr < 0x2000) {
debug(1, "s/g table too low (0x%x), reallocating\n", sc->amr_sgbusaddr);
goto retry;
}
if (AMR_IS_SG64(sc))
sc->amr_sg64table = (struct amr_sg64entry *)p;
sc->amr_sgtable = (struct amr_sgentry *)p;
return(0);
}
static int
amr_pci_attach(device_t dev)
{
struct amr_softc *sc;
struct amr_ident *id;
int rid, rtype, error;
u_int32_t command;
debug_called(1);
/*
* Initialise softc.
*/
sc = device_get_softc(dev);
bzero(sc, sizeof(*sc));
sc->amr_dev = dev;
/* assume failure is 'not configured' */
error = ENXIO;
/*
* Determine board type.
*/
if ((id = amr_find_ident(dev)) == NULL)
return (ENXIO);
command = pci_read_config(dev, PCIR_COMMAND, 1);
if (id->flags & AMR_ID_QUARTZ) {
/*
* Make sure we are going to be able to talk to this board.
*/
if ((command & PCIM_CMD_MEMEN) == 0) {
device_printf(dev, "memory window not available\n");
return (ENXIO);
}
sc->amr_type |= AMR_TYPE_QUARTZ;
} else {
/*
* Make sure we are going to be able to talk to this board.
*/
if ((command & PCIM_CMD_PORTEN) == 0) {
device_printf(dev, "I/O window not available\n");
return (ENXIO);
}
}
if ((amr_force_sg32 == 0) && (id->flags & AMR_ID_DO_SG64) &&
(sizeof(vm_paddr_t) > 4)) {
device_printf(dev, "Using 64-bit DMA\n");
sc->amr_type |= AMR_TYPE_SG64;
}
/* force the busmaster enable bit on */
if (!(command & PCIM_CMD_BUSMASTEREN)) {
device_printf(dev, "busmaster bit not set, enabling\n");
command |= PCIM_CMD_BUSMASTEREN;
pci_write_config(dev, PCIR_COMMAND, command, 2);
}
/*
* Allocate the PCI register window.
*/
rid = PCIR_BAR(0);
rtype = AMR_IS_QUARTZ(sc) ? SYS_RES_MEMORY : SYS_RES_IOPORT;
sc->amr_reg = bus_alloc_resource_any(dev, rtype, &rid, RF_ACTIVE);
if (sc->amr_reg == NULL) {
device_printf(sc->amr_dev, "can't allocate register window\n");
goto out;
}
sc->amr_btag = rman_get_bustag(sc->amr_reg);
sc->amr_bhandle = rman_get_bushandle(sc->amr_reg);
/*
* Allocate and connect our interrupt.
*/
rid = 0;
sc->amr_irq = bus_alloc_resource_any(sc->amr_dev, SYS_RES_IRQ, &rid,
RF_SHAREABLE | RF_ACTIVE);
if (sc->amr_irq == NULL) {
device_printf(sc->amr_dev, "can't allocate interrupt\n");
goto out;
}
if (bus_setup_intr(sc->amr_dev, sc->amr_irq,
0, amr_pci_intr,
sc, &sc->amr_intr, NULL)) {
device_printf(sc->amr_dev, "can't set up interrupt\n");
goto out;
}
debug(2, "interrupt attached");
/* assume failure is 'out of memory' */
error = ENOMEM;
/*
* Allocate the parent bus DMA tag appropriate for PCI.
*/
if (bus_dma_tag_create(NULL, /* parent */
1, 0, /* alignment,boundary */
AMR_IS_SG64(sc) ?
BUS_SPACE_MAXADDR :
BUS_SPACE_MAXADDR_32BIT, /* lowaddr */
BUS_SPACE_MAXADDR, /* highaddr */
NULL, NULL, /* filter, filterarg */
MAXBSIZE, AMR_NSEG, /* maxsize, nsegments */
BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */
0, /* flags */
&sc->amr_parent_dmat)) {
device_printf(dev, "can't allocate parent DMA tag\n");
goto out;
}
/*
* Create DMA tag for mapping buffers into controller-addressable space.
*/
if (bus_dma_tag_create(sc->amr_parent_dmat, /* parent */
1, 0, /* alignment,boundary */
BUS_SPACE_MAXADDR_32BIT, /* lowaddr */
BUS_SPACE_MAXADDR, /* highaddr */
NULL, NULL, /* filter, filterarg */
MAXBSIZE, AMR_NSEG, /* maxsize, nsegments */
MAXBSIZE, /* maxsegsize */
0, /* flags */
&sc->amr_buffer_dmat)) {
device_printf(sc->amr_dev, "can't allocate buffer DMA tag\n");
goto out;
}
if (bus_dma_tag_create(sc->amr_parent_dmat, /* parent */
1, 0, /* alignment,boundary */
BUS_SPACE_MAXADDR, /* lowaddr */
BUS_SPACE_MAXADDR, /* highaddr */
NULL, NULL, /* filter, filterarg */
MAXBSIZE, AMR_NSEG, /* maxsize, nsegments */
MAXBSIZE, /* maxsegsize */
0, /* flags */
&sc->amr_buffer64_dmat)) {
device_printf(sc->amr_dev, "can't allocate buffer DMA tag\n");
goto out;
}
debug(2, "dma tag done");
/*
* Allocate and set up mailbox in a bus-visible fashion.
*/
lockinit(&sc->amr_list_lock, "AMR List Lock", 0, LK_CANRECURSE);
lockinit(&sc->amr_hw_lock, "AMR HW Lock", 0, LK_CANRECURSE);
if ((error = amr_setup_mbox(sc)) != 0)
goto out;
debug(2, "mailbox setup");
/*
* Build the scatter/gather buffers.
*/
if ((error = amr_sglist_map(sc)) != 0)
goto out;
debug(2, "s/g list mapped");
if ((error = amr_ccb_map(sc)) != 0)
goto out;
debug(2, "ccb mapped");
/*
* Do bus-independant initialisation, bring controller online.
*/
error = amr_attach(sc);
out:
if (error)
amr_pci_free(sc);
return(error);
}