/*
* Copyright (C) 2001 Allan Trautman, IBM Corporation
+ * Copyright (C) 2005,2007 Stephen Rothwell, IBM Corp
*
* iSeries specific routines for PCI.
*
* 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/jiffies.h>
#include <linux/kernel.h>
#include <linux/list.h>
#include <linux/string.h>
#include <linux/init.h>
#include <linux/module.h>
#include <linux/pci.h>
+#include <linux/of.h>
+#include <asm/types.h>
#include <asm/io.h>
#include <asm/irq.h>
#include <asm/prom.h>
#include <asm/abs_addr.h>
#include <asm/firmware.h>
+#include <asm/iseries/hv_types.h>
#include <asm/iseries/hv_call_xm.h>
#include <asm/iseries/mf.h>
#include <asm/iseries/iommu.h>
#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;
* Lookup Tables.
*/
static struct device_node *iomm_table[IOMM_TABLE_MAX_ENTRIES];
-static u8 iobar_table[IOMM_TABLE_MAX_ENTRIES];
+static u64 ds_addr_table[IOMM_TABLE_MAX_ENTRIES];
-static const char pci_io_text[] = "iSeries PCI I/O";
static DEFINE_SPINLOCK(iomm_table_lock);
+/*
+ * Generate a Direct Select Address for the Hypervisor
+ */
+static inline u64 iseries_ds_addr(struct device_node *node)
+{
+ struct pci_dn *pdn = PCI_DN(node);
+ const u32 *sbp = of_get_property(node, "linux,subbus", NULL);
+
+ return ((u64)pdn->busno << 48) + ((u64)(sbp ? *sbp : 0) << 40)
+ + ((u64)0x10 << 32);
+}
+
+/*
+ * Size of Bus VPD data
+ */
+#define BUS_VPDSIZE 1024
+
+/*
+ * Bus Vpd Tags
+ */
+#define VPD_END_OF_AREA 0x79
+#define VPD_ID_STRING 0x82
+#define VPD_VENDOR_AREA 0x84
+
+/*
+ * Mfg Area Tags
+ */
+#define VPD_FRU_FRAME_ID 0x4649 /* "FI" */
+#define VPD_SLOT_MAP_FORMAT 0x4D46 /* "MF" */
+#define VPD_SLOT_MAP 0x534D /* "SM" */
+
+/*
+ * Structures of the areas
+ */
+struct mfg_vpd_area {
+ u16 tag;
+ u8 length;
+ u8 data1;
+ u8 data2;
+};
+#define MFG_ENTRY_SIZE 3
+
+struct slot_map {
+ u8 agent;
+ u8 secondary_agent;
+ u8 phb;
+ char card_location[3];
+ char parms[8];
+ char reserved[2];
+};
+#define SLOT_ENTRY_SIZE 16
+
+/*
+ * Parse the Slot Area
+ */
+static void __init iseries_parse_slot_area(struct slot_map *map, int len,
+ HvAgentId agent, u8 *phb, char card[4])
+{
+ /*
+ * Parse Slot label until we find the one requested
+ */
+ while (len > 0) {
+ if (map->agent == agent) {
+ /*
+ * If Phb wasn't found, grab the entry first one found.
+ */
+ if (*phb == 0xff)
+ *phb = map->phb;
+ /* Found it, extract the data. */
+ if (map->phb == *phb) {
+ memcpy(card, &map->card_location, 3);
+ card[3] = 0;
+ break;
+ }
+ }
+ /* Point to the next Slot */
+ map = (struct slot_map *)((char *)map + SLOT_ENTRY_SIZE);
+ len -= SLOT_ENTRY_SIZE;
+ }
+}
+
+/*
+ * Parse the Mfg Area
+ */
+static void __init iseries_parse_mfg_area(struct mfg_vpd_area *area, int len,
+ HvAgentId agent, u8 *phb, u8 *frame, char card[4])
+{
+ u16 slot_map_fmt = 0;
+
+ /* Parse Mfg Data */
+ while (len > 0) {
+ int mfg_tag_len = area->length;
+ /* Frame ID (FI 4649020310 ) */
+ if (area->tag == VPD_FRU_FRAME_ID)
+ *frame = area->data1;
+ /* Slot Map Format (MF 4D46020004 ) */
+ else if (area->tag == VPD_SLOT_MAP_FORMAT)
+ slot_map_fmt = (area->data1 * 256)
+ + area->data2;
+ /* Slot Map (SM 534D90 */
+ else if (area->tag == VPD_SLOT_MAP) {
+ struct slot_map *slot_map;
+
+ if (slot_map_fmt == 0x1004)
+ slot_map = (struct slot_map *)((char *)area
+ + MFG_ENTRY_SIZE + 1);
+ else
+ slot_map = (struct slot_map *)((char *)area
+ + MFG_ENTRY_SIZE);
+ iseries_parse_slot_area(slot_map, mfg_tag_len,
+ agent, phb, card);
+ }
+ /*
+ * Point to the next Mfg Area
+ * Use defined size, sizeof give wrong answer
+ */
+ area = (struct mfg_vpd_area *)((char *)area + mfg_tag_len
+ + MFG_ENTRY_SIZE);
+ len -= (mfg_tag_len + MFG_ENTRY_SIZE);
+ }
+}
+
+/*
+ * Look for "BUS".. Data is not Null terminated.
+ * PHBID of 0xFF indicates PHB was not found in VPD Data.
+ */
+static u8 __init iseries_parse_phbid(u8 *area, int len)
+{
+ while (len > 0) {
+ if ((*area == 'B') && (*(area + 1) == 'U')
+ && (*(area + 2) == 'S')) {
+ area += 3;
+ while (*area == ' ')
+ area++;
+ return *area & 0x0F;
+ }
+ area++;
+ len--;
+ }
+ return 0xff;
+}
+
+/*
+ * Parse out the VPD Areas
+ */
+static void __init iseries_parse_vpd(u8 *data, int data_len,
+ HvAgentId agent, u8 *frame, char card[4])
+{
+ u8 phb = 0xff;
+
+ while (data_len > 0) {
+ int len;
+ u8 tag = *data;
+
+ if (tag == VPD_END_OF_AREA)
+ break;
+ len = *(data + 1) + (*(data + 2) * 256);
+ data += 3;
+ data_len -= 3;
+ if (tag == VPD_ID_STRING)
+ phb = iseries_parse_phbid(data, len);
+ else if (tag == VPD_VENDOR_AREA)
+ iseries_parse_mfg_area((struct mfg_vpd_area *)data, len,
+ agent, &phb, frame, card);
+ /* Point to next Area. */
+ data += len;
+ data_len -= len;
+ }
+}
+
+static int __init iseries_get_location_code(u16 bus, HvAgentId agent,
+ u8 *frame, char card[4])
+{
+ int status = 0;
+ int bus_vpd_len = 0;
+ u8 *bus_vpd = kmalloc(BUS_VPDSIZE, GFP_KERNEL);
+
+ if (bus_vpd == NULL) {
+ printk("PCI: Bus VPD Buffer allocation failure.\n");
+ return 0;
+ }
+ bus_vpd_len = HvCallPci_getBusVpd(bus, iseries_hv_addr(bus_vpd),
+ BUS_VPDSIZE);
+ if (bus_vpd_len == 0) {
+ printk("PCI: Bus VPD Buffer zero length.\n");
+ goto out_free;
+ }
+ /* printk("PCI: bus_vpd: %p, %d\n",bus_vpd, bus_vpd_len); */
+ /* Make sure this is what I think it is */
+ if (*bus_vpd != VPD_ID_STRING) {
+ printk("PCI: Bus VPD Buffer missing starting tag.\n");
+ goto out_free;
+ }
+ iseries_parse_vpd(bus_vpd, bus_vpd_len, agent, frame, card);
+ status = 1;
+out_free:
+ kfree(bus_vpd);
+ return status;
+}
+
+/*
+ * Prints the device information.
+ * - Pass in pci_dev* pointer to the device.
+ * - Pass in the device count
+ *
+ * Format:
+ * PCI: Bus 0, Device 26, Vendor 0x12AE Frame 1, Card C10 Ethernet
+ * controller
+ */
+static void __init iseries_device_information(struct pci_dev *pdev,
+ u16 bus, HvSubBusNumber subbus)
+{
+ u8 frame = 0;
+ char card[4];
+ HvAgentId agent;
+
+ agent = ISERIES_PCI_AGENTID(ISERIES_GET_DEVICE_FROM_SUBBUS(subbus),
+ ISERIES_GET_FUNCTION_FROM_SUBBUS(subbus));
+
+ if (iseries_get_location_code(bus, agent, &frame, card)) {
+ 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));
+ }
+}
+
/*
* iomm_table_allocate_entry
*
* 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;
*/
while (bar_size > 0 ) {
iomm_table[current_iomm_table_entry] = dev->sysdata;
- iobar_table[current_iomm_table_entry] = bar_num;
+ ds_addr_table[current_iomm_table_entry] =
+ iseries_ds_addr(dev->sysdata) | (bar_num << 24);
bar_size -= IOMM_TABLE_ENTRY_SIZE;
++current_iomm_table_entry;
}
}
/*
- * iSeries_pci_final_fixup(void)
+ * iSeries_pcibios_fixup_resources
+ *
+ * Fixes up all resources for devices
*/
-void __init iSeries_pci_final_fixup(void)
+void __init iSeries_pcibios_fixup_resources(struct pci_dev *pdev)
{
- struct pci_dev *pdev = NULL;
+ const u32 *agent;
+ const u32 *sub_bus;
+ unsigned char bus = pdev->bus->number;
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) {
- struct pci_dn *pdn;
- const u32 *agent;
-
- node = find_device_node(pdev->bus->number, pdev->devfn);
- printk("pci dev %p (%x.%x), node %p\n", pdev,
- pdev->bus->number, pdev->devfn, node);
- if (!node) {
- printk("PCI: Device Tree not found for 0x%016lX\n",
- (unsigned long)pdev);
- continue;
- }
-
- pdn = PCI_DN(node);
- agent = of_get_property(node, "linux,agent-id", NULL);
- if (pdn && agent) {
- u8 irq = iSeries_allocate_IRQ(pdn->busno, 0,
- pdn->bussubno);
- int err;
-
- err = HvCallXm_connectBusUnit(pdn->busno, pdn->bussubno,
- *agent, irq);
+ 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("Connect Bus Unit",
- pdn->busno, pdn->bussubno, *agent, err);
- else {
- err = HvCallPci_configStore8(pdn->busno,
- pdn->bussubno, *agent,
- PCI_INTERRUPT_LINE, irq);
- if (err)
- pci_log_error("PciCfgStore Irq Failed!",
- pdn->busno, pdn->bussubno,
- *agent, err);
- else
- pdev->irq = irq;
- }
+ 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);
- iommu_devnode_init_iSeries(pdev, node);
}
+
+ pdev->sysdata = node;
+ 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)
+{
+ /* Fix up at the device node and pci_dev relationship */
+ mf_display_src(0xC9000100);
iSeries_activate_IRQs();
mf_display_src(0xC9000200);
}
static unsigned long last_jiffies;
static int num_printed;
- if ((jiffies - last_jiffies) > 60 * HZ) {
+ if (time_after(jiffies, last_jiffies + 60 * HZ)) {
last_jiffies = jiffies;
num_printed = 0;
}
dn = iomm_table[ind];
if (dn != NULL) {
- int barnum = iobar_table[ind];
- *dsaptr = iseries_ds_addr(dn) | (barnum << 24);
+ *dsaptr = ds_addr_table[ind];
*bar_offset = base_addr % IOMM_TABLE_ENTRY_SIZE;
} else
panic("PCI: Invalid PCI IO address detected!\n");
/* Install IO hooks */
ppc_pci_io = iseries_pci_io;
+ pci_probe_only = 1;
+
/* iSeries has no IO space in the common sense, it needs to set
* the IO base to 0
*/
phb = pcibios_alloc_controller(node);
if (phb == NULL)
continue;
+ /* 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);
projects / linux-2.6-omap-h63xx.git / blobdiff