powerpc: Merge in 64-bit powermac support.
This brings in a lot of changes from arch/ppc64/kernel/pmac_*.c to
arch/powerpc/platforms/powermac/*.c and makes various minor tweaks
elsewhere. On the powermac we now initialize ppc_md by copying
the whole pmac_md structure into it, which required some changes in
the ordering of initializations of individual fields of it.
Signed-off-by: Paul Mackerras <paulus@samba.org>
diff --git a/arch/powerpc/platforms/powermac/pci.c b/arch/powerpc/platforms/powermac/pci.c
index 34dfe1e..ebe22a2 100644
--- a/arch/powerpc/platforms/powermac/pci.c
+++ b/arch/powerpc/platforms/powermac/pci.c
@@ -37,14 +37,14 @@
#endif
static int add_bridge(struct device_node *dev);
-extern void pmac_check_ht_link(void);
/* XXX Could be per-controller, but I don't think we risk anything by
* assuming we won't have both UniNorth and Bandit */
static int has_uninorth;
-#ifdef CONFIG_POWER4
+#ifdef CONFIG_PPC64
static struct pci_controller *u3_agp;
-#endif /* CONFIG_POWER4 */
+static struct pci_controller *u3_ht;
+#endif /* CONFIG_PPC64 */
extern u8 pci_cache_line_size;
extern int pcibios_assign_bus_offset;
@@ -229,6 +229,7 @@
macrisc_write_config
};
+#ifdef CONFIG_PPC32
/*
* Verify that a specific (bus, dev_fn) exists on chaos
*/
@@ -282,7 +283,19 @@
chaos_write_config
};
-#ifdef CONFIG_POWER4
+static void __init setup_chaos(struct pci_controller *hose,
+ struct reg_property *addr)
+{
+ /* assume a `chaos' bridge */
+ hose->ops = &chaos_pci_ops;
+ hose->cfg_addr = ioremap(addr->address + 0x800000, 0x1000);
+ hose->cfg_data = ioremap(addr->address + 0xc00000, 0x1000);
+}
+#else
+#define setup_chaos(hose, addr)
+#endif /* CONFIG_PPC32 */
+
+#ifdef CONFIG_PPC64
/*
* These versions of U3 HyperTransport config space access ops do not
* implement self-view of the HT host yet
@@ -445,8 +458,9 @@
u3_ht_read_config,
u3_ht_write_config
};
-#endif /* CONFIG_POWER4 */
+#endif /* CONFIG_PPC64 */
+#ifdef CONFIG_PPC32
/*
* For a bandit bridge, turn on cache coherency if necessary.
* N.B. we could clean this up using the hose ops directly.
@@ -487,7 +501,6 @@
printk(KERN_INFO "Cache coherency enabled for bandit/PSX\n");
}
-
/*
* Tweak the PCI-PCI bridge chip on the blue & white G3s.
*/
@@ -539,7 +552,7 @@
struct pci_controller *hose;
u32 data, *prop;
u8 bus, devfn;
-
+
prop = (u32 *)get_property(nec, "vendor-id", NULL);
if (prop == NULL)
continue;
@@ -605,8 +618,27 @@
(void)in_le32(bp->cfg_data);
}
-static int __init
-setup_uninorth(struct pci_controller* hose, struct reg_property* addr)
+void __init setup_grackle(struct pci_controller *hose)
+{
+ setup_indirect_pci(hose, 0xfec00000, 0xfee00000);
+ if (machine_is_compatible("AAPL,PowerBook1998"))
+ grackle_set_loop_snoop(hose, 1);
+#if 0 /* Disabled for now, HW problems ??? */
+ grackle_set_stg(hose, 1);
+#endif
+}
+
+static void __init setup_bandit(struct pci_controller *hose,
+ struct reg_property *addr)
+{
+ hose->ops = ¯isc_pci_ops;
+ hose->cfg_addr = ioremap(addr->address + 0x800000, 0x1000);
+ hose->cfg_data = ioremap(addr->address + 0xc00000, 0x1000);
+ init_bandit(hose);
+}
+
+static int __init setup_uninorth(struct pci_controller *hose,
+ struct reg_property *addr)
{
pci_assign_all_buses = 1;
has_uninorth = 1;
@@ -616,31 +648,14 @@
/* We "know" that the bridge at f2000000 has the PCI slots. */
return addr->address == 0xf2000000;
}
+#endif
-static void __init
-setup_bandit(struct pci_controller* hose, struct reg_property* addr)
-{
- hose->ops = ¯isc_pci_ops;
- hose->cfg_addr = ioremap(addr->address + 0x800000, 0x1000);
- hose->cfg_data = ioremap(addr->address + 0xc00000, 0x1000);
- init_bandit(hose);
-}
-
-static void __init
-setup_chaos(struct pci_controller* hose, struct reg_property* addr)
-{
- /* assume a `chaos' bridge */
- hose->ops = &chaos_pci_ops;
- hose->cfg_addr = ioremap(addr->address + 0x800000, 0x1000);
- hose->cfg_data = ioremap(addr->address + 0xc00000, 0x1000);
-}
-
-#ifdef CONFIG_POWER4
+#ifdef CONFIG_PPC64
static void __init setup_u3_agp(struct pci_controller* hose)
{
/* On G5, we move AGP up to high bus number so we don't need
* to reassign bus numbers for HT. If we ever have P2P bridges
- * on AGP, we'll have to move pci_assign_all_buses to the
+ * on AGP, we'll have to move pci_assign_all_busses to the
* pci_controller structure so we enable it for AGP and not for
* HT childs.
* We hard code the address because of the different size of
@@ -679,8 +694,7 @@
* then read its configuration register (if any).
*/
hose->io_base_phys = 0xf4000000;
- hose->io_base_virt = ioremap(hose->io_base_phys, 0x00400000);
- isa_io_base = pci_io_base = (unsigned long) hose->io_base_virt;
+ hose->pci_io_size = 0x00400000;
hose->io_resource.name = np->full_name;
hose->io_resource.start = 0;
hose->io_resource.end = 0x003fffff;
@@ -693,6 +707,8 @@
hose->mem_resources[0].end = 0xefffffff;
hose->mem_resources[0].flags = IORESOURCE_MEM;
+ u3_ht = hose;
+
if (u3_agp == NULL) {
DBG("U3 has no AGP, using full resource range\n");
return;
@@ -730,7 +746,7 @@
printk(KERN_WARNING "Running out of resources for /ht host !\n");
hose->mem_resources[cur].end = res->start - 1;
continue;
- }
+ }
cur++;
DBG("U3/HT: hole, %d end at %08lx, %d start at %08lx\n",
cur-1, res->start - 1, cur, res->end + 1);
@@ -742,126 +758,17 @@
}
}
-#endif /* CONFIG_POWER4 */
-
-void __init
-setup_grackle(struct pci_controller *hose)
+/* XXX this needs to be converged between ppc32 and ppc64... */
+static struct pci_controller * __init pcibios_alloc_controller(void)
{
- setup_indirect_pci(hose, 0xfec00000, 0xfee00000);
- if (machine_is_compatible("AAPL,PowerBook1998"))
- grackle_set_loop_snoop(hose, 1);
-#if 0 /* Disabled for now, HW problems ??? */
- grackle_set_stg(hose, 1);
-#endif
+ struct pci_controller *hose;
+
+ hose = alloc_bootmem(sizeof(struct pci_controller));
+ if (hose)
+ pci_setup_pci_controller(hose);
+ return hose;
}
-
-static void __init pmac_process_bridge_OF_ranges(struct pci_controller *hose,
- struct device_node *dev, int primary)
-{
- static unsigned int static_lc_ranges[2024];
- unsigned int *dt_ranges, *lc_ranges, *ranges, *prev;
- unsigned int size;
- int rlen = 0, orig_rlen;
- int memno = 0;
- struct resource *res;
- int np, na = prom_n_addr_cells(dev);
-
- np = na + 5;
-
- /* First we try to merge ranges to fix a problem with some pmacs
- * that can have more than 3 ranges, fortunately using contiguous
- * addresses -- BenH
- */
- dt_ranges = (unsigned int *) get_property(dev, "ranges", &rlen);
- if (!dt_ranges)
- return;
- /* lc_ranges = alloc_bootmem(rlen);*/
- lc_ranges = static_lc_ranges;
- if (!lc_ranges)
- return; /* what can we do here ? */
- memcpy(lc_ranges, dt_ranges, rlen);
- orig_rlen = rlen;
-
- /* Let's work on a copy of the "ranges" property instead of damaging
- * the device-tree image in memory
- */
- ranges = lc_ranges;
- prev = NULL;
- while ((rlen -= np * sizeof(unsigned int)) >= 0) {
- if (prev) {
- if (prev[0] == ranges[0] && prev[1] == ranges[1] &&
- (prev[2] + prev[na+4]) == ranges[2] &&
- (prev[na+2] + prev[na+4]) == ranges[na+2]) {
- prev[na+4] += ranges[na+4];
- ranges[0] = 0;
- ranges += np;
- continue;
- }
- }
- prev = ranges;
- ranges += np;
- }
-
- /*
- * The ranges property is laid out as an array of elements,
- * each of which comprises:
- * cells 0 - 2: a PCI address
- * cells 3 or 3+4: a CPU physical address
- * (size depending on dev->n_addr_cells)
- * cells 4+5 or 5+6: the size of the range
- */
- ranges = lc_ranges;
- rlen = orig_rlen;
- while (ranges && (rlen -= np * sizeof(unsigned int)) >= 0) {
- res = NULL;
- size = ranges[na+4];
- switch (ranges[0] >> 24) {
- case 1: /* I/O space */
- if (ranges[2] != 0)
- break;
- hose->io_base_phys = ranges[na+2];
- /* limit I/O space to 16MB */
- if (size > 0x01000000)
- size = 0x01000000;
- hose->io_base_virt = ioremap(ranges[na+2], size);
- if (primary)
- isa_io_base = (unsigned long) hose->io_base_virt;
- res = &hose->io_resource;
- res->flags = IORESOURCE_IO;
- res->start = ranges[2];
- break;
- case 2: /* memory space */
- memno = 0;
- if (ranges[1] == 0 && ranges[2] == 0
- && ranges[na+4] <= (16 << 20)) {
- /* 1st 16MB, i.e. ISA memory area */
-#if 0
- if (primary)
- isa_mem_base = ranges[na+2];
#endif
- memno = 1;
- }
- while (memno < 3 && hose->mem_resources[memno].flags)
- ++memno;
- if (memno == 0)
- hose->pci_mem_offset = ranges[na+2] - ranges[2];
- if (memno < 3) {
- res = &hose->mem_resources[memno];
- res->flags = IORESOURCE_MEM;
- res->start = ranges[na+2];
- }
- break;
- }
- if (res != NULL) {
- res->name = dev->full_name;
- res->end = res->start + size - 1;
- res->parent = NULL;
- res->sibling = NULL;
- res->child = NULL;
- }
- ranges += np;
- }
-}
/*
* We assume that if we have a G3 powermac, we have one bridge called
@@ -872,70 +779,78 @@
{
int len;
struct pci_controller *hose;
+#ifdef CONFIG_PPC32
struct reg_property *addr;
- char* disp_name;
+#endif
+ char *disp_name;
int *bus_range;
int primary = 1;
DBG("Adding PCI host bridge %s\n", dev->full_name);
- addr = (struct reg_property *) get_property(dev, "reg", &len);
- if (addr == NULL || len < sizeof(*addr)) {
- printk(KERN_WARNING "Can't use %s: no address\n",
- dev->full_name);
- return -ENODEV;
- }
- bus_range = (int *) get_property(dev, "bus-range", &len);
- if (bus_range == NULL || len < 2 * sizeof(int)) {
- printk(KERN_WARNING "Can't get bus-range for %s, assume bus 0\n",
- dev->full_name);
- }
+#ifdef CONFIG_PPC32
+ /* XXX fix this */
+ addr = (struct reg_property *) get_property(dev, "reg", &len);
+ if (addr == NULL || len < sizeof(*addr)) {
+ printk(KERN_WARNING "Can't use %s: no address\n",
+ dev->full_name);
+ return -ENODEV;
+ }
+#endif
+ bus_range = (int *) get_property(dev, "bus-range", &len);
+ if (bus_range == NULL || len < 2 * sizeof(int)) {
+ printk(KERN_WARNING "Can't get bus-range for %s, assume bus 0\n",
+ dev->full_name);
+ }
- hose = pcibios_alloc_controller();
- if (!hose)
- return -ENOMEM;
- hose->arch_data = dev;
- hose->first_busno = bus_range ? bus_range[0] : 0;
- hose->last_busno = bus_range ? bus_range[1] : 0xff;
+ hose = pcibios_alloc_controller();
+ if (!hose)
+ return -ENOMEM;
+ hose->arch_data = dev;
+ hose->first_busno = bus_range ? bus_range[0] : 0;
+ hose->last_busno = bus_range ? bus_range[1] : 0xff;
disp_name = NULL;
#ifdef CONFIG_POWER4
- if (device_is_compatible(dev, "u3-agp")) {
- setup_u3_agp(hose, addr);
- disp_name = "U3-AGP";
- primary = 0;
- } else if (device_is_compatible(dev, "u3-ht")) {
- setup_u3_ht(hose, addr);
- disp_name = "U3-HT";
- primary = 1;
- } else
-#endif /* CONFIG_POWER4 */
+ if (device_is_compatible(dev, "u3-agp")) {
+ setup_u3_agp(hose);
+ disp_name = "U3-AGP";
+ primary = 0;
+ } else if (device_is_compatible(dev, "u3-ht")) {
+ setup_u3_ht(hose);
+ disp_name = "U3-HT";
+ primary = 1;
+ }
+ printk(KERN_INFO "Found %s PCI host bridge. Firmware bus number: %d->%d\n",
+ disp_name, hose->first_busno, hose->last_busno);
+#else
if (device_is_compatible(dev, "uni-north")) {
- primary = setup_uninorth(hose, addr);
- disp_name = "UniNorth";
+ primary = setup_uninorth(hose, addr);
+ disp_name = "UniNorth";
} else if (strcmp(dev->name, "pci") == 0) {
- /* XXX assume this is a mpc106 (grackle) */
- setup_grackle(hose);
- disp_name = "Grackle (MPC106)";
- } else if (strcmp(dev->name, "bandit") == 0) {
- setup_bandit(hose, addr);
- disp_name = "Bandit";
- } else if (strcmp(dev->name, "chaos") == 0) {
- setup_chaos(hose, addr);
- disp_name = "Chaos";
- primary = 0;
- }
- printk(KERN_INFO "Found %s PCI host bridge at 0x%08lx. Firmware bus number: %d->%d\n",
- disp_name, addr->address, hose->first_busno, hose->last_busno);
- DBG(" ->Hose at 0x%p, cfg_addr=0x%p,cfg_data=0x%p\n",
- hose, hose->cfg_addr, hose->cfg_data);
+ /* XXX assume this is a mpc106 (grackle) */
+ setup_grackle(hose);
+ disp_name = "Grackle (MPC106)";
+ } else if (strcmp(dev->name, "bandit") == 0) {
+ setup_bandit(hose, addr);
+ disp_name = "Bandit";
+ } else if (strcmp(dev->name, "chaos") == 0) {
+ setup_chaos(hose, addr);
+ disp_name = "Chaos";
+ primary = 0;
+ }
+ printk(KERN_INFO "Found %s PCI host bridge at 0x%08lx. Firmware bus number: %d->%d\n",
+ disp_name, addr->address, hose->first_busno, hose->last_busno);
+#endif
+ DBG(" ->Hose at 0x%p, cfg_addr=0x%p,cfg_data=0x%p\n",
+ hose, hose->cfg_addr, hose->cfg_data);
- /* Interpret the "ranges" property */
- /* This also maps the I/O region and sets isa_io/mem_base */
- pci_process_bridge_OF_ranges(hose, dev, primary);
+ /* Interpret the "ranges" property */
+ /* This also maps the I/O region and sets isa_io/mem_base */
+ pci_process_bridge_OF_ranges(hose, dev, primary);
- /* Fixup "bus-range" OF property */
- fixup_bus_range(dev);
+ /* Fixup "bus-range" OF property */
+ fixup_bus_range(dev);
return 0;
}
@@ -968,14 +883,28 @@
pcibios_fixup_OF_interrupts();
}
-void __init pmac_find_bridges(void)
+#ifdef CONFIG_PPC64
+static void __init pmac_fixup_phb_resources(void)
+{
+ struct pci_controller *hose, *tmp;
+
+ list_for_each_entry_safe(hose, tmp, &hose_list, list_node) {
+ printk(KERN_INFO "PCI Host %d, io start: %lx; io end: %lx\n",
+ hose->global_number,
+ hose->io_resource.start, hose->io_resource.end);
+ }
+}
+#endif
+
+void __init pmac_pci_init(void)
{
struct device_node *np, *root;
struct device_node *ht = NULL;
root = of_find_node_by_path("/");
if (root == NULL) {
- printk(KERN_CRIT "pmac_find_bridges: can't find root of device tree\n");
+ printk(KERN_CRIT "pmac_pci_init: can't find root "
+ "of device tree\n");
return;
}
for (np = NULL; (np = of_get_next_child(root, np)) != NULL;) {
@@ -994,22 +923,66 @@
}
of_node_put(root);
+#ifdef CONFIG_PPC64
/* Probe HT last as it relies on the agp resources to be already
* setup
*/
if (ht && add_bridge(ht) != 0)
of_node_put(ht);
+ /*
+ * We need to call pci_setup_phb_io for the HT bridge first
+ * so it gets the I/O port numbers starting at 0, and we
+ * need to call it for the AGP bridge after that so it gets
+ * small positive I/O port numbers.
+ */
+ if (u3_ht)
+ pci_setup_phb_io(u3_ht, 1);
+ if (u3_agp)
+ pci_setup_phb_io(u3_agp, 0);
+
+ /*
+ * On ppc64, fixup the IO resources on our host bridges as
+ * the common code does it only for children of the host bridges
+ */
+ pmac_fixup_phb_resources();
+
+ /* Setup the linkage between OF nodes and PHBs */
+ pci_devs_phb_init();
+
+ /* Fixup the PCI<->OF mapping for U3 AGP due to bus renumbering. We
+ * assume there is no P2P bridge on the AGP bus, which should be a
+ * safe assumptions hopefully.
+ */
+ if (u3_agp) {
+ struct device_node *np = u3_agp->arch_data;
+ PCI_DN(np)->busno = 0xf0;
+ for (np = np->child; np; np = np->sibling)
+ PCI_DN(np)->busno = 0xf0;
+ }
+
+ /* map in PCI I/O space */
+ phbs_remap_io();
+
+ /* pmac_check_ht_link(); */
+
+ /* Tell pci.c to not use the common resource allocation mechanism */
+ pci_probe_only = 1;
+
+ /* Allow all IO */
+ io_page_mask = -1;
+
+#else /* CONFIG_PPC64 */
init_p2pbridge();
fixup_nec_usb2();
-
+
/* We are still having some issues with the Xserve G4, enabling
* some offset between bus number and domains for now when we
* assign all busses should help for now
*/
if (pci_assign_all_buses)
pcibios_assign_bus_offset = 0x10;
-
+#endif
}
int
@@ -1037,7 +1010,7 @@
uninorth_child = node->parent &&
device_is_compatible(node->parent, "uni-north");
-
+
/* Firewire & GMAC were disabled after PCI probe, the driver is
* claiming them, we must re-enable them now.
*/
@@ -1057,7 +1030,7 @@
if (updatecfg) {
u16 cmd;
-
+
/*
* Make sure PCI is correctly configured
*
@@ -1069,10 +1042,12 @@
* register the device.
*/
pci_read_config_word(dev, PCI_COMMAND, &cmd);
- cmd |= PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER | PCI_COMMAND_INVALIDATE;
- pci_write_config_word(dev, PCI_COMMAND, cmd);
- pci_write_config_byte(dev, PCI_LATENCY_TIMER, 16);
- pci_write_config_byte(dev, PCI_CACHE_LINE_SIZE, pci_cache_line_size);
+ cmd |= PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER
+ | PCI_COMMAND_INVALIDATE;
+ pci_write_config_word(dev, PCI_COMMAND, cmd);
+ pci_write_config_byte(dev, PCI_LATENCY_TIMER, 16);
+ pci_write_config_byte(dev, PCI_CACHE_LINE_SIZE,
+ L1_CACHE_BYTES >> 2);
}
return 0;
@@ -1081,8 +1056,7 @@
/* We power down some devices after they have been probed. They'll
* be powered back on later on
*/
-void __init
-pmac_pcibios_after_init(void)
+void __init pmac_pcibios_after_init(void)
{
struct device_node* nd;
@@ -1125,84 +1099,6 @@
}
}
-#ifdef CONFIG_PPC64
-static void __init pmac_fixup_phb_resources(void)
-{
- struct pci_controller *hose, *tmp;
-
- list_for_each_entry_safe(hose, tmp, &hose_list, list_node) {
- unsigned long offset = (unsigned long)hose->io_base_virt - pci_io_base;
- hose->io_resource.start += offset;
- hose->io_resource.end += offset;
- printk(KERN_INFO "PCI Host %d, io start: %lx; io end: %lx\n",
- hose->global_number,
- hose->io_resource.start, hose->io_resource.end);
- }
-}
-
-void __init pmac_pci_init(void)
-{
- struct device_node *np, *root;
- struct device_node *ht = NULL;
-
- /* Probe root PCI hosts, that is on U3 the AGP host and the
- * HyperTransport host. That one is actually "kept" around
- * and actually added last as it's resource management relies
- * on the AGP resources to have been setup first
- */
- root = of_find_node_by_path("/");
- if (root == NULL) {
- printk(KERN_CRIT "pmac_find_bridges: can't find root of device tree\n");
- return;
- }
- for (np = NULL; (np = of_get_next_child(root, np)) != NULL;) {
- if (np->name == NULL)
- continue;
- if (strcmp(np->name, "pci") == 0) {
- if (add_bridge(np) == 0)
- of_node_get(np);
- }
- if (strcmp(np->name, "ht") == 0) {
- of_node_get(np);
- ht = np;
- }
- }
- of_node_put(root);
-
- /* Now setup the HyperTransport host if we found any
- */
- if (ht && add_bridge(ht) != 0)
- of_node_put(ht);
-
- /* Fixup the IO resources on our host bridges as the common code
- * does it only for childs of the host bridges
- */
- pmac_fixup_phb_resources();
-
- /* Setup the linkage between OF nodes and PHBs */
- pci_devs_phb_init();
-
- /* Fixup the PCI<->OF mapping for U3 AGP due to bus renumbering. We
- * assume there is no P2P bridge on the AGP bus, which should be a
- * safe assumptions hopefully.
- */
- if (u3_agp) {
- struct device_node *np = u3_agp->arch_data;
- PCI_DN(np)->busno = 0xf0;
- for (np = np->child; np; np = np->sibling)
- PCI_DN(np)->busno = 0xf0;
- }
-
- pmac_check_ht_link();
-
- /* Tell pci.c to not use the common resource allocation mecanism */
- pci_probe_only = 1;
-
- /* Allow all IO */
- io_page_mask = -1;
-}
-#endif
-
#ifdef CONFIG_PPC32
void pmac_pci_fixup_cardbus(struct pci_dev* dev)
{
@@ -1217,7 +1113,7 @@
if (dev->device == PCI_DEVICE_ID_TI_1130 ||
dev->device == PCI_DEVICE_ID_TI_1131) {
u8 val;
- /* Enable PCI interrupt */
+ /* Enable PCI interrupt */
if (pci_read_config_byte(dev, 0x91, &val) == 0)
pci_write_config_byte(dev, 0x91, val | 0x30);
/* Disable ISA interrupt mode */