/********************************************************************************
* Free all of the resources associated with (sc)
*
* Should not be called if the controller is active.
*/
static void
amr_pci_free(struct amr_softc *sc)
{
void *p;
debug_called(1);
amr_free(sc);
/* destroy data-transfer DMA tag */
if (sc->amr_buffer_dmat)
bus_dma_tag_destroy(sc->amr_buffer_dmat);
if (sc->amr_buffer64_dmat)
bus_dma_tag_destroy(sc->amr_buffer64_dmat);
/* free and destroy DMA memory and tag for passthrough pool */
if (sc->amr_ccb) {
bus_dmamap_unload(sc->amr_ccb_dmat, sc->amr_ccb_dmamap);
bus_dmamem_free(sc->amr_ccb_dmat, sc->amr_ccb, sc->amr_ccb_dmamap);
}
if (sc->amr_ccb_dmat)
bus_dma_tag_destroy(sc->amr_ccb_dmat);
/* free and destroy DMA memory and tag for s/g lists */
if (sc->amr_sgtable) {
bus_dmamap_unload(sc->amr_sg_dmat, sc->amr_sg_dmamap);
bus_dmamem_free(sc->amr_sg_dmat, sc->amr_sgtable, sc->amr_sg_dmamap);
}
if (sc->amr_sg_dmat)
bus_dma_tag_destroy(sc->amr_sg_dmat);
/* free and destroy DMA memory and tag for mailbox */
p = (void *)(uintptr_t)(volatile void *)sc->amr_mailbox64;
if (sc->amr_mailbox) {
bus_dmamap_unload(sc->amr_mailbox_dmat, sc->amr_mailbox_dmamap);
bus_dmamem_free(sc->amr_mailbox_dmat, p, sc->amr_mailbox_dmamap);
}
if (sc->amr_mailbox_dmat)
bus_dma_tag_destroy(sc->amr_mailbox_dmat);
/* disconnect the interrupt handler */
if (sc->amr_intr)
bus_teardown_intr(sc->amr_dev, sc->amr_irq, sc->amr_intr);
if (sc->amr_irq != NULL)
bus_release_resource(sc->amr_dev, SYS_RES_IRQ, 0, sc->amr_irq);
/* destroy the parent DMA tag */
if (sc->amr_parent_dmat)
bus_dma_tag_destroy(sc->amr_parent_dmat);
/* release the register window mapping */
if (sc->amr_reg != NULL)
bus_release_resource(sc->amr_dev,
AMR_IS_QUARTZ(sc) ? SYS_RES_MEMORY : SYS_RES_IOPORT,
PCIR_BAR(0), sc->amr_reg);
}
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_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);
}