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-rw-r--r--sys/powerpc/mpc85xx/pci_ocp.c102
1 files changed, 65 insertions, 37 deletions
diff --git a/sys/powerpc/mpc85xx/pci_ocp.c b/sys/powerpc/mpc85xx/pci_ocp.c
index 66c2d65..e315454 100644
--- a/sys/powerpc/mpc85xx/pci_ocp.c
+++ b/sys/powerpc/mpc85xx/pci_ocp.c
@@ -1,5 +1,6 @@
/*-
- * Copyright 2006 by Juniper Networks. All rights reserved.
+ * Copyright 2006-2007 by Juniper Networks.
+ * All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
@@ -93,8 +94,6 @@ struct pci_ocp_softc {
int sc_pcie:1;
};
-static int pci_ocp_busnr = 0;
-
static int pci_ocp_attach(device_t);
static int pci_ocp_probe(device_t);
@@ -154,7 +153,7 @@ pci_ocp_cfgread(struct pci_ocp_softc *sc, u_int bus, u_int slot, u_int func,
{
uint32_t addr, data;
- if (bus == sc->sc_busnr && !sc->sc_pcie)
+ if (bus == sc->sc_busnr)
bus = 0;
addr = CONFIG_ACCESS_ENABLE;
@@ -192,7 +191,7 @@ pci_ocp_cfgwrite(struct pci_ocp_softc *sc, u_int bus, u_int slot, u_int func,
{
uint32_t addr;
- if (bus == sc->sc_busnr && !sc->sc_pcie)
+ if (bus == sc->sc_busnr)
bus = 0;
addr = CONFIG_ACCESS_ENABLE;
@@ -359,8 +358,8 @@ pci_ocp_probe(device_t dev)
cfgreg = (cfgreg >> 8) & 0xff;
}
- bus_get_resource(dev, SYS_RES_MEMORY, 1, &start, &size);
- if (start == 0 || size == 0)
+ error = bus_get_resource(dev, SYS_RES_MEMORY, 1, &start, &size);
+ if (error || start == 0 || size == 0)
goto out;
snprintf(buf, sizeof(buf),
@@ -378,19 +377,17 @@ pci_ocp_init_bar(struct pci_ocp_softc *sc, int bus, int slot, int func,
int barno)
{
bus_addr_t *allocp;
- uint32_t addr, bar, mask, size;
+ uint32_t addr, mask, size;
int reg, width;
reg = PCIR_BAR(barno);
- bar = pci_ocp_read_config(sc->sc_dev, bus, slot, func, reg, 4);
- if (bar == 0)
- return (1);
- width = ((bar & 7) == 4) ? 2 : 1;
-
pci_ocp_write_config(sc->sc_dev, bus, slot, func, reg, ~0, 4);
size = pci_ocp_read_config(sc->sc_dev, bus, slot, func, reg, 4);
+ if (size == 0)
+ return (1);
+ width = ((size & 7) == 4) ? 2 : 1;
- if (bar & 1) { /* I/O port */
+ if (size & 1) { /* I/O port */
allocp = &sc->sc_ioport_alloc;
size &= ~3;
if ((size & 0xffff0000) == 0)
@@ -409,8 +406,9 @@ pci_ocp_init_bar(struct pci_ocp_softc *sc, int bus, int slot, int func,
*allocp = addr + size;
if (bootverbose)
- printf("PCI %u:%u:%u: reg %x: size=%08x: addr=%08x\n",
- bus, slot, func, reg, size, addr);
+ printf("PCI %u:%u:%u:%u: reg %x: size=%08x: addr=%08x\n",
+ device_get_unit(sc->sc_dev), bus, slot, func, reg,
+ size, addr);
pci_ocp_write_config(sc->sc_dev, bus, slot, func, reg, addr, 4);
if (width == 2)
@@ -419,17 +417,41 @@ pci_ocp_init_bar(struct pci_ocp_softc *sc, int bus, int slot, int func,
return (width);
}
-static void
-pci_ocp_init(struct pci_ocp_softc *sc, int bus)
+static u_int
+pci_ocp_route_int(struct pci_ocp_softc *sc, u_int bus, u_int slot, u_int func,
+ u_int intpin)
+{
+ u_int intline;
+
+ /*
+ * Default interrupt routing.
+ */
+ if (intpin != 0) {
+ intline = intpin - 1;
+ intline += (bus != sc->sc_busnr) ? slot : 0;
+ intline = PIC_IRQ_EXT(intline & 3);
+ } else
+ intline = 0xff;
+
+ if (bootverbose)
+ printf("PCI %u:%u:%u:%u: intpin %u: intline=%u\n",
+ device_get_unit(sc->sc_dev), bus, slot, func,
+ intpin, intline);
+
+ return (intline);
+}
+
+static int
+pci_ocp_init(struct pci_ocp_softc *sc, int bus, int maxslot)
{
- int slot, maxslot;
+ int secbus, slot;
int func, maxfunc;
int bar, maxbar;
uint16_t vendor, device;
uint8_t cr8, command, hdrtype, class, subclass;
uint8_t intline, intpin;
- maxslot = (sc->sc_pcie) ? 1 : 31;
+ secbus = bus;
for (slot = 0; slot < maxslot; slot++) {
maxfunc = 0;
for (func = 0; func <= maxfunc; func++) {
@@ -482,7 +504,7 @@ pci_ocp_init(struct pci_ocp_softc *sc, int bus)
}
/* Program the base address registers. */
- maxbar = (hdrtype & PCIM_HDRTYPE) ? 0 : 6;
+ maxbar = (hdrtype & PCIM_HDRTYPE) ? 1 : 6;
bar = 0;
while (bar < maxbar)
bar += pci_ocp_init_bar(sc, bus, slot, func,
@@ -491,12 +513,8 @@ pci_ocp_init(struct pci_ocp_softc *sc, int bus)
/* Perform interrupt routing. */
intpin = pci_ocp_read_config(sc->sc_dev, bus, slot,
func, PCIR_INTPIN, 1);
- if (intpin != 0) {
- intline = intpin - 1;
- intline += (bus != sc->sc_busnr) ? slot : 0;
- intline = PIC_IRQ_EXT(intline & 3);
- } else
- intline = 0xff;
+ intline = pci_ocp_route_int(sc, bus, slot, func,
+ intpin);
pci_ocp_write_config(sc->sc_dev, bus, slot, func,
PCIR_INTLINE, intline, 1);
@@ -517,6 +535,8 @@ pci_ocp_init(struct pci_ocp_softc *sc, int bus)
if (subclass != PCIS_BRIDGE_PCI)
continue;
+ secbus++;
+
/* Program I/O decoder. */
pci_ocp_write_config(sc->sc_dev, bus, slot, func,
PCIR_IOBASEL_1, sc->sc_ioport.rm_start >> 8, 1);
@@ -543,20 +563,22 @@ pci_ocp_init(struct pci_ocp_softc *sc, int bus)
pci_ocp_write_config(sc->sc_dev, bus, slot, func,
PCIR_PMLIMITH_1, 0x00000000, 4);
- pci_ocp_busnr++;
pci_ocp_write_config(sc->sc_dev, bus, slot, func,
PCIR_PRIBUS_1, bus, 1);
pci_ocp_write_config(sc->sc_dev, bus, slot, func,
- PCIR_SECBUS_1, pci_ocp_busnr, 1);
+ PCIR_SECBUS_1, secbus, 1);
pci_ocp_write_config(sc->sc_dev, bus, slot, func,
PCIR_SUBBUS_1, 0xff, 1);
- pci_ocp_init(sc, pci_ocp_busnr);
+ secbus = pci_ocp_init(sc, secbus,
+ (subclass == PCIS_BRIDGE_PCI) ? 31 : 1);
pci_ocp_write_config(sc->sc_dev, bus, slot, func,
- PCIR_SUBBUS_1, pci_ocp_busnr, 1);
+ PCIR_SUBBUS_1, secbus, 1);
}
}
+
+ return (secbus);
}
static void
@@ -619,7 +641,10 @@ pci_ocp_iorange(struct pci_ocp_softc *sc, int type, int wnd)
bus_addr_t *vap, *allocp;
int error;
- bus_get_resource(sc->sc_dev, type, 1, &start, &size);
+ error = bus_get_resource(sc->sc_dev, type, 1, &start, &size);
+ if (error)
+ return (error);
+
end = start + size - 1;
switch (type) {
@@ -658,7 +683,8 @@ pci_ocp_iorange(struct pci_ocp_softc *sc, int type, int wnd)
*allocp = pci_start + alloc;
*vap = (uintptr_t)pmap_mapdev(start, size);
- pci_ocp_outbound(sc, wnd, type, start, size, pci_start);
+ if (wnd != -1)
+ pci_ocp_outbound(sc, wnd, type, start, size, pci_start);
return (0);
}
@@ -667,7 +693,7 @@ pci_ocp_attach(device_t dev)
{
struct pci_ocp_softc *sc;
uint32_t cfgreg;
- int error;
+ int error, maxslot;
sc = device_get_softc(dev);
sc->sc_dev = dev;
@@ -697,9 +723,8 @@ pci_ocp_attach(device_t dev)
pci_ocp_inbound(sc, 2, -1, 0, 0, 0);
pci_ocp_inbound(sc, 3, OCP85XX_TGTIF_RAM, 0, 2U*1024U*1024U*1024U, 0);
- sc->sc_busnr = pci_ocp_busnr;
- pci_ocp_init(sc, sc->sc_busnr);
- pci_ocp_busnr++;
+ maxslot = (sc->sc_pcie) ? 1 : 31;
+ pci_ocp_init(sc, sc->sc_busnr, maxslot);
device_add_child(dev, "pci", -1);
return (bus_generic_attach(dev));
@@ -763,6 +788,9 @@ pci_ocp_read_ivar(device_t dev, device_t child, int which, uintptr_t *result)
case PCIB_IVAR_BUS:
*result = sc->sc_busnr;
return (0);
+ case PCIB_IVAR_DOMAIN:
+ *result = device_get_unit(dev);
+ return (0);
}
return (ENOENT);
}
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