int
ahd_pci_map_registers(struct ahd_softc *ahd)
{
struct resource *regs;
struct resource *regs2;
int regs_type;
int regs_id;
int regs_id2;
int allow_memio;
regs = NULL;
regs2 = NULL;
regs_type = 0;
regs_id = 0;
/* Retrieve the per-device 'allow_memio' hint */
if (resource_int_value(device_get_name(ahd->dev_softc),
device_get_unit(ahd->dev_softc),
"allow_memio", &allow_memio) != 0) {
if (bootverbose)
device_printf(ahd->dev_softc,
"Defaulting to MEMIO on\n");
allow_memio = 1;
}
if ((ahd->bugs & AHD_PCIX_MMAPIO_BUG) == 0
&& allow_memio != 0) {
regs_type = SYS_RES_MEMORY;
regs_id = AHD_PCI_MEMADDR;
regs = bus_alloc_resource_any(ahd->dev_softc, regs_type,
®s_id, RF_ACTIVE);
if (regs != NULL) {
int error;
ahd->tags[0] = rman_get_bustag(regs);
ahd->bshs[0] = rman_get_bushandle(regs);
ahd->tags[1] = ahd->tags[0];
error = bus_space_subregion(ahd->tags[0], ahd->bshs[0],
/*offset*/0x100,
/*size*/0x100,
&ahd->bshs[1]);
/*
* Do a quick test to see if memory mapped
* I/O is functioning correctly.
*/
if (error != 0
|| ahd_pci_test_register_access(ahd) != 0) {
device_printf(ahd->dev_softc,
"PCI Device %d:%d:%d failed memory "
"mapped test. Using PIO.\n",
aic_get_pci_bus(ahd->dev_softc),
aic_get_pci_slot(ahd->dev_softc),
aic_get_pci_function(ahd->dev_softc));
bus_release_resource(ahd->dev_softc, regs_type,
regs_id, regs);
regs = NULL;
AHD_CORRECTABLE_ERROR(ahd);
}
}
}
if (regs == NULL) {
regs_type = SYS_RES_IOPORT;
regs_id = AHD_PCI_IOADDR0;
regs = bus_alloc_resource_any(ahd->dev_softc, regs_type,
®s_id, RF_ACTIVE);
if (regs == NULL) {
device_printf(ahd->dev_softc,
"can't allocate register resources\n");
AHD_UNCORRECTABLE_ERROR(ahd);
return (ENOMEM);
}
ahd->tags[0] = rman_get_bustag(regs);
ahd->bshs[0] = rman_get_bushandle(regs);
/* And now the second BAR */
regs_id2 = AHD_PCI_IOADDR1;
regs2 = bus_alloc_resource_any(ahd->dev_softc, regs_type,
®s_id2, RF_ACTIVE);
if (regs2 == NULL) {
device_printf(ahd->dev_softc,
"can't allocate register resources\n");
AHD_UNCORRECTABLE_ERROR(ahd);
return (ENOMEM);
}
ahd->tags[1] = rman_get_bustag(regs2);
ahd->bshs[1] = rman_get_bushandle(regs2);
ahd->platform_data->regs_res_type[1] = regs_type;
ahd->platform_data->regs_res_id[1] = regs_id2;
ahd->platform_data->regs[1] = regs2;
}
ahd->platform_data->regs_res_type[0] = regs_type;
ahd->platform_data->regs_res_id[0] = regs_id;
ahd->platform_data->regs[0] = regs;
return (0);
}
int
ahd_pci_map_registers(struct ahd_softc *ahd)
{
uint32_t command;
u_long base;
uint8_t __iomem *maddr;
int error;
/*
* If its allowed, we prefer memory mapped access.
*/
command = ahd_pci_read_config(ahd->dev_softc, PCIR_COMMAND, 4);
command &= ~(PCIM_CMD_PORTEN|PCIM_CMD_MEMEN);
base = 0;
maddr = NULL;
error = ahd_linux_pci_reserve_mem_region(ahd, &base, &maddr);
if (error == 0) {
ahd->platform_data->mem_busaddr = base;
ahd->tags[0] = BUS_SPACE_MEMIO;
ahd->bshs[0].maddr = maddr;
ahd->tags[1] = BUS_SPACE_MEMIO;
ahd->bshs[1].maddr = maddr + 0x100;
ahd_pci_write_config(ahd->dev_softc, PCIR_COMMAND,
command | PCIM_CMD_MEMEN, 4);
if (ahd_pci_test_register_access(ahd) != 0) {
printf("aic79xx: PCI Device %d:%d:%d "
"failed memory mapped test. Using PIO.\n",
ahd_get_pci_bus(ahd->dev_softc),
ahd_get_pci_slot(ahd->dev_softc),
ahd_get_pci_function(ahd->dev_softc));
iounmap(maddr);
release_mem_region(ahd->platform_data->mem_busaddr,
0x1000);
ahd->bshs[0].maddr = NULL;
maddr = NULL;
} else
command |= PCIM_CMD_MEMEN;
} else if (bootverbose) {
printf("aic79xx: PCI%d:%d:%d MEM region 0x%lx "
"unavailable. Cannot memory map device.\n",
ahd_get_pci_bus(ahd->dev_softc),
ahd_get_pci_slot(ahd->dev_softc),
ahd_get_pci_function(ahd->dev_softc),
base);
}
if (maddr == NULL) {
u_long base2;
error = ahd_linux_pci_reserve_io_regions(ahd, &base, &base2);
if (error == 0) {
ahd->tags[0] = BUS_SPACE_PIO;
ahd->tags[1] = BUS_SPACE_PIO;
ahd->bshs[0].ioport = base;
ahd->bshs[1].ioport = base2;
command |= PCIM_CMD_PORTEN;
} else {
printf("aic79xx: PCI%d:%d:%d IO regions 0x%lx and 0x%lx"
"unavailable. Cannot map device.\n",
ahd_get_pci_bus(ahd->dev_softc),
ahd_get_pci_slot(ahd->dev_softc),
ahd_get_pci_function(ahd->dev_softc),
base, base2);
}
}
ahd_pci_write_config(ahd->dev_softc, PCIR_COMMAND, command, 4);
return (error);
}
static void
ahd_pci_attach(device_t parent, device_t self, void *aux)
{
struct pci_attach_args *pa = aux;
struct ahd_softc *ahd = device_private(self);
const struct ahd_pci_identity *entry;
uint32_t devconfig;
pcireg_t command;
int error;
pcireg_t subid;
uint16_t subvendor;
pcireg_t reg;
int ioh_valid, ioh2_valid, memh_valid;
pcireg_t memtype;
pci_intr_handle_t ih;
const char *intrstr;
struct ahd_pci_busdata *bd;
ahd->sc_dev = self;
ahd_set_name(ahd, device_xname(self));
ahd->parent_dmat = pa->pa_dmat;
command = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG);
subid = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_SUBSYS_ID_REG);
entry = ahd_find_pci_device(pa->pa_id, subid);
if (entry == NULL)
return;
/* Keep information about the PCI bus */
bd = malloc(sizeof (struct ahd_pci_busdata), M_DEVBUF, M_NOWAIT);
if (bd == NULL) {
aprint_error("%s: unable to allocate bus-specific data\n",
ahd_name(ahd));
return;
}
memset(bd, 0, sizeof(struct ahd_pci_busdata));
bd->pc = pa->pa_pc;
bd->tag = pa->pa_tag;
bd->func = pa->pa_function;
bd->dev = pa->pa_device;
ahd->bus_data = bd;
ahd->description = entry->name;
ahd->seep_config = malloc(sizeof(*ahd->seep_config),
M_DEVBUF, M_NOWAIT);
if (ahd->seep_config == NULL) {
aprint_error("%s: cannot malloc seep_config!\n", ahd_name(ahd));
return;
}
memset(ahd->seep_config, 0, sizeof(*ahd->seep_config));
LIST_INIT(&ahd->pending_scbs);
ahd_timer_init(&ahd->reset_timer);
ahd_timer_init(&ahd->stat_timer);
ahd->flags = AHD_SPCHK_ENB_A|AHD_RESET_BUS_A|AHD_TERM_ENB_A
| AHD_EXTENDED_TRANS_A|AHD_STPWLEVEL_A;
ahd->int_coalescing_timer = AHD_INT_COALESCING_TIMER_DEFAULT;
ahd->int_coalescing_maxcmds = AHD_INT_COALESCING_MAXCMDS_DEFAULT;
ahd->int_coalescing_mincmds = AHD_INT_COALESCING_MINCMDS_DEFAULT;
ahd->int_coalescing_threshold = AHD_INT_COALESCING_THRESHOLD_DEFAULT;
ahd->int_coalescing_stop_threshold =
AHD_INT_COALESCING_STOP_THRESHOLD_DEFAULT;
if (ahd_platform_alloc(ahd, NULL) != 0) {
ahd_free(ahd);
return;
}
/*
* Record if this is an HP board.
*/
subvendor = PCI_VENDOR(subid);
if (subvendor == SUBID_HP)
ahd->flags |= AHD_HP_BOARD;
error = entry->setup(ahd, pa);
if (error != 0)
return;
devconfig = pci_conf_read(pa->pa_pc, pa->pa_tag, DEVCONFIG);
if ((devconfig & PCIXINITPAT) == PCIXINIT_PCI33_66) {
ahd->chip |= AHD_PCI;
/* Disable PCIX workarounds when running in PCI mode. */
ahd->bugs &= ~AHD_PCIX_BUG_MASK;
} else {
ahd->chip |= AHD_PCIX;
}
ahd->bus_description = pci_bus_modes[PCI_BUS_MODES_INDEX(devconfig)];
memh_valid = ioh_valid = ioh2_valid = 0;
if (!pci_get_capability(pa->pa_pc, pa->pa_tag, PCI_CAP_PCIX,
&bd->pcix_off, NULL)) {
if (ahd->chip & AHD_PCIX)
aprint_error_dev(self,
"warning: can't find PCI-X capability\n");
ahd->chip &= ~AHD_PCIX;
ahd->chip |= AHD_PCI;
ahd->bugs &= ~AHD_PCIX_BUG_MASK;
}
/*
* Map PCI Registers
*/
if ((ahd->bugs & AHD_PCIX_MMAPIO_BUG) == 0) {
memtype = pci_mapreg_type(pa->pa_pc, pa->pa_tag,
AHD_PCI_MEMADDR);
switch (memtype) {
case PCI_MAPREG_TYPE_MEM | PCI_MAPREG_MEM_TYPE_32BIT:
case PCI_MAPREG_TYPE_MEM | PCI_MAPREG_MEM_TYPE_64BIT:
memh_valid = (pci_mapreg_map(pa, AHD_PCI_MEMADDR,
memtype, 0, &ahd->tags[0],
&ahd->bshs[0],
NULL, NULL) == 0);
if (memh_valid) {
ahd->tags[1] = ahd->tags[0];
bus_space_subregion(ahd->tags[0], ahd->bshs[0],
/*offset*/0x100,
/*size*/0x100,
&ahd->bshs[1]);
if (ahd_pci_test_register_access(ahd) != 0)
memh_valid = 0;
}
break;
default:
memh_valid = 0;
aprint_error("%s: unknown memory type: 0x%x\n",
ahd_name(ahd), memtype);
break;
}
if (memh_valid) {
command &= ~PCI_COMMAND_IO_ENABLE;
pci_conf_write(pa->pa_pc, pa->pa_tag,
PCI_COMMAND_STATUS_REG, command);
}
#ifdef AHD_DEBUG
printf("%s: doing memory mapping shs0 0x%lx, shs1 0x%lx\n",
ahd_name(ahd), ahd->bshs[0], ahd->bshs[1]);
#endif
}
if (command & PCI_COMMAND_IO_ENABLE) {
/* First BAR */
ioh_valid = (pci_mapreg_map(pa, AHD_PCI_IOADDR,
PCI_MAPREG_TYPE_IO, 0,
&ahd->tags[0], &ahd->bshs[0],
NULL, NULL) == 0);
/* 2nd BAR */
ioh2_valid = (pci_mapreg_map(pa, AHD_PCI_IOADDR1,
PCI_MAPREG_TYPE_IO, 0,
&ahd->tags[1], &ahd->bshs[1],
NULL, NULL) == 0);
if (ioh_valid && ioh2_valid) {
KASSERT(memh_valid == 0);
command &= ~PCI_COMMAND_MEM_ENABLE;
pci_conf_write(pa->pa_pc, pa->pa_tag,
PCI_COMMAND_STATUS_REG, command);
}
#ifdef AHD_DEBUG
printf("%s: doing io mapping shs0 0x%lx, shs1 0x%lx\n",
ahd_name(ahd), ahd->bshs[0], ahd->bshs[1]);
#endif
}
if (memh_valid == 0 && (ioh_valid == 0 || ioh2_valid == 0)) {
aprint_error("%s: unable to map registers\n", ahd_name(ahd));
return;
}
aprint_normal("\n");
aprint_naive("\n");
/* power up chip */
if ((error = pci_activate(pa->pa_pc, pa->pa_tag, self,
pci_activate_null)) && error != EOPNOTSUPP) {
aprint_error_dev(self, "cannot activate %d\n", error);
return;
}
/*
* Should we bother disabling 39Bit addressing
* based on installed memory?
*/
if (sizeof(bus_addr_t) > 4)
ahd->flags |= AHD_39BIT_ADDRESSING;
/*
* If we need to support high memory, enable dual
* address cycles. This bit must be set to enable
* high address bit generation even if we are on a
* 64bit bus (PCI64BIT set in devconfig).
*/
if ((ahd->flags & (AHD_39BIT_ADDRESSING|AHD_64BIT_ADDRESSING)) != 0) {
uint32_t dvconfig;
aprint_normal("%s: Enabling 39Bit Addressing\n", ahd_name(ahd));
dvconfig = pci_conf_read(pa->pa_pc, pa->pa_tag, DEVCONFIG);
dvconfig |= DACEN;
pci_conf_write(pa->pa_pc, pa->pa_tag, DEVCONFIG, dvconfig);
}
/* Ensure busmastering is enabled */
reg = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG);
pci_conf_write(pa->pa_pc, pa->pa_tag, PCI_COMMAND_STATUS_REG,
reg | PCI_COMMAND_MASTER_ENABLE);
ahd_softc_init(ahd);
/*
* Map the interrupt routines
*/
ahd->bus_intr = ahd_pci_intr;
error = ahd_reset(ahd, /*reinit*/FALSE);
if (error != 0) {
ahd_free(ahd);
return;
}
if (pci_intr_map(pa, &ih)) {
aprint_error("%s: couldn't map interrupt\n", ahd_name(ahd));
ahd_free(ahd);
return;
}
intrstr = pci_intr_string(pa->pa_pc, ih);
ahd->ih = pci_intr_establish(pa->pa_pc, ih, IPL_BIO, ahd_intr, ahd);
if (ahd->ih == NULL) {
aprint_error("%s: couldn't establish interrupt",
ahd_name(ahd));
if (intrstr != NULL)
aprint_error(" at %s", intrstr);
aprint_error("\n");
ahd_free(ahd);
return;
}
if (intrstr != NULL)
aprint_normal("%s: interrupting at %s\n", ahd_name(ahd),
intrstr);
/* Get the size of the cache */
ahd->pci_cachesize = pci_conf_read(pa->pa_pc, pa->pa_tag, PCI_BHLC_REG);
ahd->pci_cachesize *= 4;
ahd_set_modes(ahd, AHD_MODE_SCSI, AHD_MODE_SCSI);
/* See if we have a SEEPROM and perform auto-term */
error = ahd_check_extport(ahd);
if (error != 0)
return;
/* Core initialization */
error = ahd_init(ahd);
if (error != 0)
return;
/*
* Link this softc in with all other ahd instances.
*/
ahd_attach(ahd);
}
