[POWERPC] fix iSeries PCI resource management
The way iSeries manages PCI IO and Memory resources is a bit strange
and is based on overriding the content of those resources with home
cooked ones afterward.
This changes it a bit to better integrate with the new resource handling
so that the "virtual" tokens that iSeries replaces resources with are
done from the proper per-device fixup hook, and bridge resources are
set to enclose that token space. This fixes various things such as
the output of /proc/iomem & ioports, among others. This also fixes up
various boot messages as well.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
diff --git a/arch/powerpc/platforms/iseries/pci.c b/arch/powerpc/platforms/iseries/pci.c
index 68f248b..30e3d99 100644
--- a/arch/powerpc/platforms/iseries/pci.c
+++ b/arch/powerpc/platforms/iseries/pci.c
@@ -20,6 +20,9 @@
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
+
+#undef DEBUG
+
#include <linux/kernel.h>
#include <linux/list.h>
#include <linux/string.h>
@@ -58,6 +61,7 @@
#define IOMM_TABLE_MAX_ENTRIES 1024
#define IOMM_TABLE_ENTRY_SIZE 0x0000000000400000UL
#define BASE_IO_MEMORY 0xE000000000000000UL
+#define END_IO_MEMORY 0xEFFFFFFFFFFFFFFFUL
static unsigned long max_io_memory = BASE_IO_MEMORY;
static long current_iomm_table_entry;
@@ -68,7 +72,6 @@
static struct device_node *iomm_table[IOMM_TABLE_MAX_ENTRIES];
static u8 iobar_table[IOMM_TABLE_MAX_ENTRIES];
-static const char pci_io_text[] = "iSeries PCI I/O";
static DEFINE_SPINLOCK(iomm_table_lock);
/*
@@ -279,8 +282,8 @@
* PCI: Bus 0, Device 26, Vendor 0x12AE Frame 1, Card C10 Ethernet
* controller
*/
-static void __init iseries_device_information(struct pci_dev *pdev, int count,
- u16 bus, HvSubBusNumber subbus)
+static void __init iseries_device_information(struct pci_dev *pdev,
+ u16 bus, HvSubBusNumber subbus)
{
u8 frame = 0;
char card[4];
@@ -290,10 +293,9 @@
ISERIES_GET_FUNCTION_FROM_SUBBUS(subbus));
if (iseries_get_location_code(bus, agent, &frame, card)) {
- printk("%d. PCI: Bus%3d, Device%3d, Vendor %04X Frame%3d, "
- "Card %4s 0x%04X\n", count, bus,
- PCI_SLOT(pdev->devfn), pdev->vendor, frame,
- card, (int)(pdev->class >> 8));
+ printk(KERN_INFO "PCI: %s, Vendor %04X Frame%3d, "
+ "Card %4s 0x%04X\n", pci_name(pdev), pdev->vendor,
+ frame, card, (int)(pdev->class >> 8));
}
}
@@ -323,7 +325,6 @@
* Set Resource values.
*/
spin_lock(&iomm_table_lock);
- bar_res->name = pci_io_text;
bar_res->start = BASE_IO_MEMORY +
IOMM_TABLE_ENTRY_SIZE * current_iomm_table_entry;
bar_res->end = bar_res->start + bar_size - 1;
@@ -393,61 +394,63 @@
}
/*
+ * iSeries_pcibios_fixup_resources
+ *
+ * Fixes up all resources for devices
+ */
+void __init iSeries_pcibios_fixup_resources(struct pci_dev *pdev)
+{
+ const u32 *agent;
+ const u32 *sub_bus;
+ unsigned char bus = pdev->bus->number;
+ struct device_node *node;
+ int i;
+
+ node = find_device_node(bus, pdev->devfn);
+ pr_debug("PCI: iSeries %s, pdev %p, node %p\n",
+ pci_name(pdev), pdev, node);
+ if (!node) {
+ printk("PCI: %s disabled, device tree entry not found !\n",
+ pci_name(pdev));
+ for (i = 0; i <= PCI_ROM_RESOURCE; i++)
+ pdev->resource[i].flags = 0;
+ return;
+ }
+ sub_bus = of_get_property(node, "linux,subbus", NULL);
+ agent = of_get_property(node, "linux,agent-id", NULL);
+ if (agent && sub_bus) {
+ u8 irq = iSeries_allocate_IRQ(bus, 0, *sub_bus);
+ int err;
+
+ err = HvCallXm_connectBusUnit(bus, *sub_bus, *agent, irq);
+ if (err)
+ pci_log_error("Connect Bus Unit",
+ bus, *sub_bus, *agent, err);
+ else {
+ err = HvCallPci_configStore8(bus, *sub_bus,
+ *agent, PCI_INTERRUPT_LINE, irq);
+ if (err)
+ pci_log_error("PciCfgStore Irq Failed!",
+ bus, *sub_bus, *agent, err);
+ else
+ pdev->irq = irq;
+ }
+ }
+
+ pdev->sysdata = node;
+ PCI_DN(node)->pcidev = pdev;
+ allocate_device_bars(pdev);
+ iseries_device_information(pdev, bus, *sub_bus);
+ iommu_devnode_init_iSeries(pdev, node);
+}
+
+/*
* iSeries_pci_final_fixup(void)
*/
void __init iSeries_pci_final_fixup(void)
{
- struct pci_dev *pdev = NULL;
- struct device_node *node;
- int num_dev = 0;
-
/* Fix up at the device node and pci_dev relationship */
mf_display_src(0xC9000100);
-
- printk("pcibios_final_fixup\n");
- for_each_pci_dev(pdev) {
- const u32 *agent;
- const u32 *sub_bus;
- unsigned char bus = pdev->bus->number;
-
- node = find_device_node(bus, pdev->devfn);
- printk("pci dev %p (%x.%x), node %p\n", pdev, bus,
- pdev->devfn, node);
- if (!node) {
- printk("PCI: Device Tree not found for 0x%016lX\n",
- (unsigned long)pdev);
- continue;
- }
-
- agent = of_get_property(node, "linux,agent-id", NULL);
- sub_bus = of_get_property(node, "linux,subbus", NULL);
- if (agent && sub_bus) {
- u8 irq = iSeries_allocate_IRQ(bus, 0, *sub_bus);
- int err;
-
- err = HvCallXm_connectBusUnit(bus, *sub_bus,
- *agent, irq);
- if (err)
- pci_log_error("Connect Bus Unit",
- bus, *sub_bus, *agent, err);
- else {
- err = HvCallPci_configStore8(bus, *sub_bus,
- *agent, PCI_INTERRUPT_LINE, irq);
- if (err)
- pci_log_error("PciCfgStore Irq Failed!",
- bus, *sub_bus, *agent, err);
- else
- pdev->irq = irq;
- }
- }
-
- num_dev++;
- pdev->sysdata = node;
- PCI_DN(node)->pcidev = pdev;
- allocate_device_bars(pdev);
- iseries_device_information(pdev, num_dev, bus, *sub_bus);
- iommu_devnode_init_iSeries(pdev, node);
- }
iSeries_activate_IRQs();
mf_display_src(0xC9000200);
}
@@ -894,10 +897,18 @@
/* All legacy iSeries PHBs are in domain zero */
phb->global_number = 0;
- phb->pci_mem_offset = bus;
phb->first_busno = bus;
phb->last_busno = bus;
phb->ops = &iSeries_pci_ops;
+ phb->io_base_virt = (void __iomem *)_IO_BASE;
+ phb->io_resource.flags = IORESOURCE_IO;
+ phb->io_resource.start = BASE_IO_MEMORY;
+ phb->io_resource.end = END_IO_MEMORY;
+ phb->io_resource.name = "iSeries PCI IO";
+ phb->mem_resources[0].flags = IORESOURCE_MEM;
+ phb->mem_resources[0].start = BASE_IO_MEMORY;
+ phb->mem_resources[0].end = END_IO_MEMORY;
+ phb->mem_resources[0].name = "Series PCI MEM";
}
of_node_put(root);