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Diffstat (limited to 'arch/ppc/platforms/prep_pci.c')
-rw-r--r--arch/ppc/platforms/prep_pci.c1336
1 files changed, 1336 insertions, 0 deletions
diff --git a/arch/ppc/platforms/prep_pci.c b/arch/ppc/platforms/prep_pci.c
new file mode 100644
index 000000000000..8cd80eb447bd
--- /dev/null
+++ b/arch/ppc/platforms/prep_pci.c
@@ -0,0 +1,1336 @@
+/*
+ * PReP pci functions.
+ * Originally by Gary Thomas
+ * rewritten and updated by Cort Dougan (cort@cs.nmt.edu)
+ *
+ * The motherboard routes/maps will disappear shortly. -- Cort
+ */
+
+#include <linux/config.h>
+#include <linux/types.h>
+#include <linux/pci.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+
+#include <asm/sections.h>
+#include <asm/byteorder.h>
+#include <asm/io.h>
+#include <asm/ptrace.h>
+#include <asm/prom.h>
+#include <asm/pci-bridge.h>
+#include <asm/residual.h>
+#include <asm/irq.h>
+#include <asm/machdep.h>
+#include <asm/open_pic.h>
+
+extern void (*setup_ibm_pci)(char *irq_lo, char *irq_hi);
+
+/* Which PCI interrupt line does a given device [slot] use? */
+/* Note: This really should be two dimensional based in slot/pin used */
+static unsigned char *Motherboard_map;
+unsigned char *Motherboard_map_name;
+
+/* How is the 82378 PIRQ mapping setup? */
+static unsigned char *Motherboard_routes;
+
+static void (*Motherboard_non0)(struct pci_dev *);
+
+static void Powerplus_Map_Non0(struct pci_dev *);
+
+/* Used for Motorola to store system config register */
+static unsigned long *ProcInfo;
+
+/* Tables for known hardware */
+
+/* Motorola PowerStackII - Utah */
+static char Utah_pci_IRQ_map[23] __prepdata =
+{
+ 0, /* Slot 0 - unused */
+ 0, /* Slot 1 - unused */
+ 5, /* Slot 2 - SCSI - NCR825A */
+ 0, /* Slot 3 - unused */
+ 3, /* Slot 4 - Ethernet - DEC2114x */
+ 0, /* Slot 5 - unused */
+ 2, /* Slot 6 - PCI Card slot #1 */
+ 3, /* Slot 7 - PCI Card slot #2 */
+ 5, /* Slot 8 - PCI Card slot #3 */
+ 5, /* Slot 9 - PCI Bridge */
+ /* added here in case we ever support PCI bridges */
+ /* Secondary PCI bus cards are at slot-9,6 & slot-9,7 */
+ 0, /* Slot 10 - unused */
+ 0, /* Slot 11 - unused */
+ 5, /* Slot 12 - SCSI - NCR825A */
+ 0, /* Slot 13 - unused */
+ 3, /* Slot 14 - enet */
+ 0, /* Slot 15 - unused */
+ 2, /* Slot 16 - unused */
+ 3, /* Slot 17 - unused */
+ 5, /* Slot 18 - unused */
+ 0, /* Slot 19 - unused */
+ 0, /* Slot 20 - unused */
+ 0, /* Slot 21 - unused */
+ 0, /* Slot 22 - unused */
+};
+
+static char Utah_pci_IRQ_routes[] __prepdata =
+{
+ 0, /* Line 0 - Unused */
+ 9, /* Line 1 */
+ 10, /* Line 2 */
+ 11, /* Line 3 */
+ 14, /* Line 4 */
+ 15, /* Line 5 */
+};
+
+/* Motorola PowerStackII - Omaha */
+/* no integrated SCSI or ethernet */
+static char Omaha_pci_IRQ_map[23] __prepdata =
+{
+ 0, /* Slot 0 - unused */
+ 0, /* Slot 1 - unused */
+ 3, /* Slot 2 - Winbond EIDE */
+ 0, /* Slot 3 - unused */
+ 0, /* Slot 4 - unused */
+ 0, /* Slot 5 - unused */
+ 1, /* Slot 6 - PCI slot 1 */
+ 2, /* Slot 7 - PCI slot 2 */
+ 3, /* Slot 8 - PCI slot 3 */
+ 4, /* Slot 9 - PCI slot 4 */ /* needs indirect access */
+ 0, /* Slot 10 - unused */
+ 0, /* Slot 11 - unused */
+ 0, /* Slot 12 - unused */
+ 0, /* Slot 13 - unused */
+ 0, /* Slot 14 - unused */
+ 0, /* Slot 15 - unused */
+ 1, /* Slot 16 - PCI slot 1 */
+ 2, /* Slot 17 - PCI slot 2 */
+ 3, /* Slot 18 - PCI slot 3 */
+ 4, /* Slot 19 - PCI slot 4 */ /* needs indirect access */
+ 0,
+ 0,
+ 0,
+};
+
+static char Omaha_pci_IRQ_routes[] __prepdata =
+{
+ 0, /* Line 0 - Unused */
+ 9, /* Line 1 */
+ 11, /* Line 2 */
+ 14, /* Line 3 */
+ 15 /* Line 4 */
+};
+
+/* Motorola PowerStack */
+static char Blackhawk_pci_IRQ_map[19] __prepdata =
+{
+ 0, /* Slot 0 - unused */
+ 0, /* Slot 1 - unused */
+ 0, /* Slot 2 - unused */
+ 0, /* Slot 3 - unused */
+ 0, /* Slot 4 - unused */
+ 0, /* Slot 5 - unused */
+ 0, /* Slot 6 - unused */
+ 0, /* Slot 7 - unused */
+ 0, /* Slot 8 - unused */
+ 0, /* Slot 9 - unused */
+ 0, /* Slot 10 - unused */
+ 0, /* Slot 11 - unused */
+ 3, /* Slot 12 - SCSI */
+ 0, /* Slot 13 - unused */
+ 1, /* Slot 14 - Ethernet */
+ 0, /* Slot 15 - unused */
+ 1, /* Slot P7 */
+ 2, /* Slot P6 */
+ 3, /* Slot P5 */
+};
+
+static char Blackhawk_pci_IRQ_routes[] __prepdata =
+{
+ 0, /* Line 0 - Unused */
+ 9, /* Line 1 */
+ 11, /* Line 2 */
+ 15, /* Line 3 */
+ 15 /* Line 4 */
+};
+
+/* Motorola Mesquite */
+static char Mesquite_pci_IRQ_map[23] __prepdata =
+{
+ 0, /* Slot 0 - unused */
+ 0, /* Slot 1 - unused */
+ 0, /* Slot 2 - unused */
+ 0, /* Slot 3 - unused */
+ 0, /* Slot 4 - unused */
+ 0, /* Slot 5 - unused */
+ 0, /* Slot 6 - unused */
+ 0, /* Slot 7 - unused */
+ 0, /* Slot 8 - unused */
+ 0, /* Slot 9 - unused */
+ 0, /* Slot 10 - unused */
+ 0, /* Slot 11 - unused */
+ 0, /* Slot 12 - unused */
+ 0, /* Slot 13 - unused */
+ 2, /* Slot 14 - Ethernet */
+ 0, /* Slot 15 - unused */
+ 3, /* Slot 16 - PMC */
+ 0, /* Slot 17 - unused */
+ 0, /* Slot 18 - unused */
+ 0, /* Slot 19 - unused */
+ 0, /* Slot 20 - unused */
+ 0, /* Slot 21 - unused */
+ 0, /* Slot 22 - unused */
+};
+
+/* Motorola Sitka */
+static char Sitka_pci_IRQ_map[21] __prepdata =
+{
+ 0, /* Slot 0 - unused */
+ 0, /* Slot 1 - unused */
+ 0, /* Slot 2 - unused */
+ 0, /* Slot 3 - unused */
+ 0, /* Slot 4 - unused */
+ 0, /* Slot 5 - unused */
+ 0, /* Slot 6 - unused */
+ 0, /* Slot 7 - unused */
+ 0, /* Slot 8 - unused */
+ 0, /* Slot 9 - unused */
+ 0, /* Slot 10 - unused */
+ 0, /* Slot 11 - unused */
+ 0, /* Slot 12 - unused */
+ 0, /* Slot 13 - unused */
+ 2, /* Slot 14 - Ethernet */
+ 0, /* Slot 15 - unused */
+ 9, /* Slot 16 - PMC 1 */
+ 12, /* Slot 17 - PMC 2 */
+ 0, /* Slot 18 - unused */
+ 0, /* Slot 19 - unused */
+ 4, /* Slot 20 - NT P2P bridge */
+};
+
+/* Motorola MTX */
+static char MTX_pci_IRQ_map[23] __prepdata =
+{
+ 0, /* Slot 0 - unused */
+ 0, /* Slot 1 - unused */
+ 0, /* Slot 2 - unused */
+ 0, /* Slot 3 - unused */
+ 0, /* Slot 4 - unused */
+ 0, /* Slot 5 - unused */
+ 0, /* Slot 6 - unused */
+ 0, /* Slot 7 - unused */
+ 0, /* Slot 8 - unused */
+ 0, /* Slot 9 - unused */
+ 0, /* Slot 10 - unused */
+ 0, /* Slot 11 - unused */
+ 3, /* Slot 12 - SCSI */
+ 0, /* Slot 13 - unused */
+ 2, /* Slot 14 - Ethernet */
+ 0, /* Slot 15 - unused */
+ 9, /* Slot 16 - PCI/PMC slot 1 */
+ 10, /* Slot 17 - PCI/PMC slot 2 */
+ 11, /* Slot 18 - PCI slot 3 */
+ 0, /* Slot 19 - unused */
+ 0, /* Slot 20 - unused */
+ 0, /* Slot 21 - unused */
+ 0, /* Slot 22 - unused */
+};
+
+/* Motorola MTX Plus */
+/* Secondary bus interrupt routing is not supported yet */
+static char MTXplus_pci_IRQ_map[23] __prepdata =
+{
+ 0, /* Slot 0 - unused */
+ 0, /* Slot 1 - unused */
+ 0, /* Slot 2 - unused */
+ 0, /* Slot 3 - unused */
+ 0, /* Slot 4 - unused */
+ 0, /* Slot 5 - unused */
+ 0, /* Slot 6 - unused */
+ 0, /* Slot 7 - unused */
+ 0, /* Slot 8 - unused */
+ 0, /* Slot 9 - unused */
+ 0, /* Slot 10 - unused */
+ 0, /* Slot 11 - unused */
+ 3, /* Slot 12 - SCSI */
+ 0, /* Slot 13 - unused */
+ 2, /* Slot 14 - Ethernet 1 */
+ 0, /* Slot 15 - unused */
+ 9, /* Slot 16 - PCI slot 1P */
+ 10, /* Slot 17 - PCI slot 2P */
+ 11, /* Slot 18 - PCI slot 3P */
+ 10, /* Slot 19 - Ethernet 2 */
+ 0, /* Slot 20 - P2P Bridge */
+ 0, /* Slot 21 - unused */
+ 0, /* Slot 22 - unused */
+};
+
+static char Raven_pci_IRQ_routes[] __prepdata =
+{
+ 0, /* This is a dummy structure */
+};
+
+/* Motorola MVME16xx */
+static char Genesis_pci_IRQ_map[16] __prepdata =
+{
+ 0, /* Slot 0 - unused */
+ 0, /* Slot 1 - unused */
+ 0, /* Slot 2 - unused */
+ 0, /* Slot 3 - unused */
+ 0, /* Slot 4 - unused */
+ 0, /* Slot 5 - unused */
+ 0, /* Slot 6 - unused */
+ 0, /* Slot 7 - unused */
+ 0, /* Slot 8 - unused */
+ 0, /* Slot 9 - unused */
+ 0, /* Slot 10 - unused */
+ 0, /* Slot 11 - unused */
+ 3, /* Slot 12 - SCSI */
+ 0, /* Slot 13 - unused */
+ 1, /* Slot 14 - Ethernet */
+ 0, /* Slot 15 - unused */
+};
+
+static char Genesis_pci_IRQ_routes[] __prepdata =
+{
+ 0, /* Line 0 - Unused */
+ 10, /* Line 1 */
+ 11, /* Line 2 */
+ 14, /* Line 3 */
+ 15 /* Line 4 */
+};
+
+static char Genesis2_pci_IRQ_map[23] __prepdata =
+{
+ 0, /* Slot 0 - unused */
+ 0, /* Slot 1 - unused */
+ 0, /* Slot 2 - unused */
+ 0, /* Slot 3 - unused */
+ 0, /* Slot 4 - unused */
+ 0, /* Slot 5 - unused */
+ 0, /* Slot 6 - unused */
+ 0, /* Slot 7 - unused */
+ 0, /* Slot 8 - unused */
+ 0, /* Slot 9 - unused */
+ 0, /* Slot 10 - unused */
+ 0, /* Slot 11 - IDE */
+ 3, /* Slot 12 - SCSI */
+ 5, /* Slot 13 - Universe PCI - VME Bridge */
+ 2, /* Slot 14 - Ethernet */
+ 0, /* Slot 15 - unused */
+ 9, /* Slot 16 - PMC 1 */
+ 12, /* Slot 17 - pci */
+ 11, /* Slot 18 - pci */
+ 10, /* Slot 19 - pci */
+ 0, /* Slot 20 - pci */
+ 0, /* Slot 21 - unused */
+ 0, /* Slot 22 - unused */
+};
+
+/* Motorola Series-E */
+static char Comet_pci_IRQ_map[23] __prepdata =
+{
+ 0, /* Slot 0 - unused */
+ 0, /* Slot 1 - unused */
+ 0, /* Slot 2 - unused */
+ 0, /* Slot 3 - unused */
+ 0, /* Slot 4 - unused */
+ 0, /* Slot 5 - unused */
+ 0, /* Slot 6 - unused */
+ 0, /* Slot 7 - unused */
+ 0, /* Slot 8 - unused */
+ 0, /* Slot 9 - unused */
+ 0, /* Slot 10 - unused */
+ 0, /* Slot 11 - unused */
+ 3, /* Slot 12 - SCSI */
+ 0, /* Slot 13 - unused */
+ 1, /* Slot 14 - Ethernet */
+ 0, /* Slot 15 - unused */
+ 1, /* Slot 16 - PCI slot 1 */
+ 2, /* Slot 17 - PCI slot 2 */
+ 3, /* Slot 18 - PCI slot 3 */
+ 4, /* Slot 19 - PCI bridge */
+ 0,
+ 0,
+ 0,
+};
+
+static char Comet_pci_IRQ_routes[] __prepdata =
+{
+ 0, /* Line 0 - Unused */
+ 10, /* Line 1 */
+ 11, /* Line 2 */
+ 14, /* Line 3 */
+ 15 /* Line 4 */
+};
+
+/* Motorola Series-EX */
+static char Comet2_pci_IRQ_map[23] __prepdata =
+{
+ 0, /* Slot 0 - unused */
+ 0, /* Slot 1 - unused */
+ 3, /* Slot 2 - SCSI - NCR825A */
+ 0, /* Slot 3 - unused */
+ 1, /* Slot 4 - Ethernet - DEC2104X */
+ 0, /* Slot 5 - unused */
+ 1, /* Slot 6 - PCI slot 1 */
+ 2, /* Slot 7 - PCI slot 2 */
+ 3, /* Slot 8 - PCI slot 3 */
+ 4, /* Slot 9 - PCI bridge */
+ 0, /* Slot 10 - unused */
+ 0, /* Slot 11 - unused */
+ 3, /* Slot 12 - SCSI - NCR825A */
+ 0, /* Slot 13 - unused */
+ 1, /* Slot 14 - Ethernet - DEC2104X */
+ 0, /* Slot 15 - unused */
+ 1, /* Slot 16 - PCI slot 1 */
+ 2, /* Slot 17 - PCI slot 2 */
+ 3, /* Slot 18 - PCI slot 3 */
+ 4, /* Slot 19 - PCI bridge */
+ 0,
+ 0,
+ 0,
+};
+
+static char Comet2_pci_IRQ_routes[] __prepdata =
+{
+ 0, /* Line 0 - Unused */
+ 10, /* Line 1 */
+ 11, /* Line 2 */
+ 14, /* Line 3 */
+ 15, /* Line 4 */
+};
+
+/*
+ * ibm 830 (and 850?).
+ * This is actually based on the Carolina motherboard
+ * -- Cort
+ */
+static char ibm8xx_pci_IRQ_map[23] __prepdata = {
+ 0, /* Slot 0 - unused */
+ 0, /* Slot 1 - unused */
+ 0, /* Slot 2 - unused */
+ 0, /* Slot 3 - unused */
+ 0, /* Slot 4 - unused */
+ 0, /* Slot 5 - unused */
+ 0, /* Slot 6 - unused */
+ 0, /* Slot 7 - unused */
+ 0, /* Slot 8 - unused */
+ 0, /* Slot 9 - unused */
+ 0, /* Slot 10 - unused */
+ 0, /* Slot 11 - FireCoral */
+ 4, /* Slot 12 - Ethernet PCIINTD# */
+ 2, /* Slot 13 - PCI Slot #2 */
+ 2, /* Slot 14 - S3 Video PCIINTD# */
+ 0, /* Slot 15 - onboard SCSI (INDI) [1] */
+ 3, /* Slot 16 - NCR58C810 RS6000 Only PCIINTC# */
+ 0, /* Slot 17 - unused */
+ 2, /* Slot 18 - PCI Slot 2 PCIINTx# (See below) */
+ 0, /* Slot 19 - unused */
+ 0, /* Slot 20 - unused */
+ 0, /* Slot 21 - unused */
+ 2, /* Slot 22 - PCI slot 1 PCIINTx# (See below) */
+};
+
+static char ibm8xx_pci_IRQ_routes[] __prepdata = {
+ 0, /* Line 0 - unused */
+ 15, /* Line 1 */
+ 15, /* Line 2 */
+ 15, /* Line 3 */
+ 15, /* Line 4 */
+};
+
+/*
+ * a 6015 ibm board
+ * -- Cort
+ */
+static char ibm6015_pci_IRQ_map[23] __prepdata = {
+ 0, /* Slot 0 - unused */
+ 0, /* Slot 1 - unused */
+ 0, /* Slot 2 - unused */
+ 0, /* Slot 3 - unused */
+ 0, /* Slot 4 - unused */
+ 0, /* Slot 5 - unused */
+ 0, /* Slot 6 - unused */
+ 0, /* Slot 7 - unused */
+ 0, /* Slot 8 - unused */
+ 0, /* Slot 9 - unused */
+ 0, /* Slot 10 - unused */
+ 0, /* Slot 11 - */
+ 1, /* Slot 12 - SCSI */
+ 2, /* Slot 13 - */
+ 2, /* Slot 14 - */
+ 1, /* Slot 15 - */
+ 1, /* Slot 16 - */
+ 0, /* Slot 17 - */
+ 2, /* Slot 18 - */
+ 0, /* Slot 19 - */
+ 0, /* Slot 20 - */
+ 0, /* Slot 21 - */
+ 2, /* Slot 22 - */
+};
+
+static char ibm6015_pci_IRQ_routes[] __prepdata = {
+ 0, /* Line 0 - unused */
+ 13, /* Line 1 */
+ 15, /* Line 2 */
+ 15, /* Line 3 */
+ 15, /* Line 4 */
+};
+
+
+/* IBM Nobis and Thinkpad 850 */
+static char Nobis_pci_IRQ_map[23] __prepdata ={
+ 0, /* Slot 0 - unused */
+ 0, /* Slot 1 - unused */
+ 0, /* Slot 2 - unused */
+ 0, /* Slot 3 - unused */
+ 0, /* Slot 4 - unused */
+ 0, /* Slot 5 - unused */
+ 0, /* Slot 6 - unused */
+ 0, /* Slot 7 - unused */
+ 0, /* Slot 8 - unused */
+ 0, /* Slot 9 - unused */
+ 0, /* Slot 10 - unused */
+ 0, /* Slot 11 - unused */
+ 3, /* Slot 12 - SCSI */
+ 0, /* Slot 13 - unused */
+ 0, /* Slot 14 - unused */
+ 0, /* Slot 15 - unused */
+};
+
+static char Nobis_pci_IRQ_routes[] __prepdata = {
+ 0, /* Line 0 - Unused */
+ 13, /* Line 1 */
+ 13, /* Line 2 */
+ 13, /* Line 3 */
+ 13 /* Line 4 */
+};
+
+/*
+ * IBM RS/6000 43p/140 -- paulus
+ * XXX we should get all this from the residual data
+ */
+static char ibm43p_pci_IRQ_map[23] __prepdata = {
+ 0, /* Slot 0 - unused */
+ 0, /* Slot 1 - unused */
+ 0, /* Slot 2 - unused */
+ 0, /* Slot 3 - unused */
+ 0, /* Slot 4 - unused */
+ 0, /* Slot 5 - unused */
+ 0, /* Slot 6 - unused */
+ 0, /* Slot 7 - unused */
+ 0, /* Slot 8 - unused */
+ 0, /* Slot 9 - unused */
+ 0, /* Slot 10 - unused */
+ 0, /* Slot 11 - FireCoral ISA bridge */
+ 6, /* Slot 12 - Ethernet */
+ 0, /* Slot 13 - openpic */
+ 0, /* Slot 14 - unused */
+ 0, /* Slot 15 - unused */
+ 7, /* Slot 16 - NCR58C825a onboard scsi */
+ 0, /* Slot 17 - unused */
+ 2, /* Slot 18 - PCI Slot 2 PCIINTx# (See below) */
+ 0, /* Slot 19 - unused */
+ 0, /* Slot 20 - unused */
+ 0, /* Slot 21 - unused */
+ 1, /* Slot 22 - PCI slot 1 PCIINTx# (See below) */
+};
+
+static char ibm43p_pci_IRQ_routes[] __prepdata = {
+ 0, /* Line 0 - unused */
+ 15, /* Line 1 */
+ 15, /* Line 2 */
+ 15, /* Line 3 */
+ 15, /* Line 4 */
+};
+
+/* Motorola PowerPlus architecture PCI IRQ tables */
+/* Interrupt line values for INTA-D on primary/secondary MPIC inputs */
+
+struct powerplus_irq_list
+{
+ unsigned char primary[4]; /* INT A-D */
+ unsigned char secondary[4]; /* INT A-D */
+};
+
+/*
+ * For standard PowerPlus boards, bus 0 PCI INTs A-D are routed to
+ * OpenPIC inputs 9-12. PCI INTs A-D from the on board P2P bridge
+ * are routed to OpenPIC inputs 5-8. These values are offset by
+ * 16 in the table to reflect the Linux kernel interrupt value.
+ */
+struct powerplus_irq_list Powerplus_pci_IRQ_list __prepdata =
+{
+ {25, 26, 27, 28},
+ {21, 22, 23, 24}
+};
+
+/*
+ * For the MCP750 (system slot board), cPCI INTs A-D are routed to
+ * OpenPIC inputs 8-11 and the PMC INTs A-D are routed to OpenPIC
+ * input 3. On a hot swap MCP750, the companion card PCI INTs A-D
+ * are routed to OpenPIC inputs 12-15. These values are offset by
+ * 16 in the table to reflect the Linux kernel interrupt value.
+ */
+struct powerplus_irq_list Mesquite_pci_IRQ_list __prepdata =
+{
+ {24, 25, 26, 27},
+ {28, 29, 30, 31}
+};
+
+/*
+ * This table represents the standard PCI swizzle defined in the
+ * PCI bus specification.
+ */
+static unsigned char prep_pci_intpins[4][4] __prepdata =
+{
+ { 1, 2, 3, 4}, /* Buses 0, 4, 8, ... */
+ { 2, 3, 4, 1}, /* Buses 1, 5, 9, ... */
+ { 3, 4, 1, 2}, /* Buses 2, 6, 10 ... */
+ { 4, 1, 2, 3}, /* Buses 3, 7, 11 ... */
+};
+
+/* We have to turn on LEVEL mode for changed IRQ's */
+/* All PCI IRQ's need to be level mode, so this should be something
+ * other than hard-coded as well... IRQ's are individually mappable
+ * to either edge or level.
+ */
+
+/*
+ * 8259 edge/level control definitions
+ */
+#define ISA8259_M_ELCR 0x4d0
+#define ISA8259_S_ELCR 0x4d1
+
+#define ELCRS_INT15_LVL 0x80
+#define ELCRS_INT14_LVL 0x40
+#define ELCRS_INT12_LVL 0x10
+#define ELCRS_INT11_LVL 0x08
+#define ELCRS_INT10_LVL 0x04
+#define ELCRS_INT9_LVL 0x02
+#define ELCRS_INT8_LVL 0x01
+#define ELCRM_INT7_LVL 0x80
+#define ELCRM_INT5_LVL 0x20
+
+#if 0
+/*
+ * PCI config space access.
+ */
+#define CFGADDR(dev) ((1<<(dev>>3)) | ((dev&7)<<8))
+#define DEVNO(dev) (dev>>3)
+
+#define MIN_DEVNR 11
+#define MAX_DEVNR 22
+
+static int __prep
+prep_read_config(struct pci_bus *bus, unsigned int devfn, int offset,
+ int len, u32 *val)
+{
+ struct pci_controller *hose = bus->sysdata;
+ volatile void __iomem *cfg_data;
+
+ if (bus->number != 0 || DEVNO(devfn) < MIN_DEVNR
+ || DEVNO(devfn) > MAX_DEVNR)
+ return PCIBIOS_DEVICE_NOT_FOUND;
+
+ /*
+ * Note: the caller has already checked that offset is
+ * suitably aligned and that len is 1, 2 or 4.
+ */
+ cfg_data = hose->cfg_data + CFGADDR(devfn) + offset;
+ switch (len) {
+ case 1:
+ *val = in_8(cfg_data);
+ break;
+ case 2:
+ *val = in_le16(cfg_data);
+ break;
+ default:
+ *val = in_le32(cfg_data);
+ break;
+ }
+ return PCIBIOS_SUCCESSFUL;
+}
+
+static int __prep
+prep_write_config(struct pci_bus *bus, unsigned int devfn, int offset,
+ int len, u32 val)
+{
+ struct pci_controller *hose = bus->sysdata;
+ volatile void __iomem *cfg_data;
+
+ if (bus->number != 0 || DEVNO(devfn) < MIN_DEVNR
+ || DEVNO(devfn) > MAX_DEVNR)
+ return PCIBIOS_DEVICE_NOT_FOUND;
+
+ /*
+ * Note: the caller has already checked that offset is
+ * suitably aligned and that len is 1, 2 or 4.
+ */
+ cfg_data = hose->cfg_data + CFGADDR(devfn) + offset;
+ switch (len) {
+ case 1:
+ out_8(cfg_data, val);
+ break;
+ case 2:
+ out_le16(cfg_data, val);
+ break;
+ default:
+ out_le32(cfg_data, val);
+ break;
+ }
+ return PCIBIOS_SUCCESSFUL;
+}
+
+static struct pci_ops prep_pci_ops =
+{
+ prep_read_config,
+ prep_write_config
+};
+#endif
+
+#define MOTOROLA_CPUTYPE_REG 0x800
+#define MOTOROLA_BASETYPE_REG 0x803
+#define MPIC_RAVEN_ID 0x48010000
+#define MPIC_HAWK_ID 0x48030000
+#define MOT_PROC2_BIT 0x800
+
+static u_char prep_openpic_initsenses[] __initdata = {
+ (IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE), /* MVME2600_INT_SIO */
+ (IRQ_SENSE_EDGE | IRQ_POLARITY_NEGATIVE), /* MVME2600_INT_FALCN_ECC_ERR */
+ (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* MVME2600_INT_PCI_ETHERNET */
+ (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* MVME2600_INT_PCI_SCSI */
+ (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* MVME2600_INT_PCI_GRAPHICS */
+ (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* MVME2600_INT_PCI_VME0 */
+ (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* MVME2600_INT_PCI_VME1 */
+ (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* MVME2600_INT_PCI_VME2 */
+ (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* MVME2600_INT_PCI_VME3 */
+ (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* MVME2600_INT_PCI_INTA */
+ (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* MVME2600_INT_PCI_INTB */
+ (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* MVME2600_INT_PCI_INTC */
+ (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* MVME2600_INT_PCI_INTD */
+ (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* MVME2600_INT_LM_SIG0 */
+ (IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE), /* MVME2600_INT_LM_SIG1 */
+};
+
+#define MOT_RAVEN_PRESENT 0x1
+#define MOT_HAWK_PRESENT 0x2
+
+int mot_entry = -1;
+int prep_keybd_present = 1;
+int MotMPIC;
+int mot_multi;
+
+int __init
+raven_init(void)
+{
+ unsigned int devid;
+ unsigned int pci_membase;
+ unsigned char base_mod;
+
+ /* Check to see if the Raven chip exists. */
+ if ( _prep_type != _PREP_Motorola) {
+ OpenPIC_Addr = NULL;
+ return 0;
+ }
+
+ /* Check to see if this board is a type that might have a Raven. */
+ if ((inb(MOTOROLA_CPUTYPE_REG) & 0xF0) != 0xE0) {
+ OpenPIC_Addr = NULL;
+ return 0;
+ }
+
+ /* Check the first PCI device to see if it is a Raven. */
+ early_read_config_dword(NULL, 0, 0, PCI_VENDOR_ID, &devid);
+
+ switch (devid & 0xffff0000) {
+ case MPIC_RAVEN_ID:
+ MotMPIC = MOT_RAVEN_PRESENT;
+ break;
+ case MPIC_HAWK_ID:
+ MotMPIC = MOT_HAWK_PRESENT;
+ break;
+ default:
+ OpenPIC_Addr = NULL;
+ return 0;
+ }
+
+
+ /* Read the memory base register. */
+ early_read_config_dword(NULL, 0, 0, PCI_BASE_ADDRESS_1, &pci_membase);
+
+ if (pci_membase == 0) {
+ OpenPIC_Addr = NULL;
+ return 0;
+ }
+
+ /* Map the Raven MPIC registers to virtual memory. */
+ OpenPIC_Addr = ioremap(pci_membase+0xC0000000, 0x22000);
+
+ OpenPIC_InitSenses = prep_openpic_initsenses;
+ OpenPIC_NumInitSenses = sizeof(prep_openpic_initsenses);
+
+ ppc_md.get_irq = openpic_get_irq;
+
+ /* If raven is present on Motorola store the system config register
+ * for later use.
+ */
+ ProcInfo = (unsigned long *)ioremap(0xfef80400, 4);
+
+ /* Indicate to system if this is a multiprocessor board */
+ if (!(*ProcInfo & MOT_PROC2_BIT)) {
+ mot_multi = 1;
+ }
+
+ /* This is a hack. If this is a 2300 or 2400 mot board then there is
+ * no keyboard controller and we have to indicate that.
+ */
+ base_mod = inb(MOTOROLA_BASETYPE_REG);
+ if ((MotMPIC == MOT_HAWK_PRESENT) || (base_mod == 0xF9) ||
+ (base_mod == 0xFA) || (base_mod == 0xE1))
+ prep_keybd_present = 0;
+
+ return 1;
+}
+
+struct mot_info {
+ int cpu_type; /* 0x100 mask assumes for Raven and Hawk boards that the level/edge are set */
+ /* 0x200 if this board has a Hawk chip. */
+ int base_type;
+ int max_cpu; /* ored with 0x80 if this board should be checked for multi CPU */
+ const char *name;
+ unsigned char *map;
+ unsigned char *routes;
+ void (*map_non0_bus)(struct pci_dev *); /* For boards with more than bus 0 devices. */
+ struct powerplus_irq_list *pci_irq_list; /* List of PCI MPIC inputs */
+ unsigned char secondary_bridge_devfn; /* devfn of secondary bus transparent bridge */
+} mot_info[] __prepdata = {
+ {0x300, 0x00, 0x00, "MVME 2400", Genesis2_pci_IRQ_map, Raven_pci_IRQ_routes, Powerplus_Map_Non0, &Powerplus_pci_IRQ_list, 0xFF},
+ {0x010, 0x00, 0x00, "Genesis", Genesis_pci_IRQ_map, Genesis_pci_IRQ_routes, Powerplus_Map_Non0, &Powerplus_pci_IRQ_list, 0x00},
+ {0x020, 0x00, 0x00, "Powerstack (Series E)", Comet_pci_IRQ_map, Comet_pci_IRQ_routes, NULL, NULL, 0x00},
+ {0x040, 0x00, 0x00, "Blackhawk (Powerstack)", Blackhawk_pci_IRQ_map, Blackhawk_pci_IRQ_routes, NULL, NULL, 0x00},
+ {0x050, 0x00, 0x00, "Omaha (PowerStack II Pro3000)", Omaha_pci_IRQ_map, Omaha_pci_IRQ_routes, NULL, NULL, 0x00},
+ {0x060, 0x00, 0x00, "Utah (Powerstack II Pro4000)", Utah_pci_IRQ_map, Utah_pci_IRQ_routes, NULL, NULL, 0x00},
+ {0x0A0, 0x00, 0x00, "Powerstack (Series EX)", Comet2_pci_IRQ_map, Comet2_pci_IRQ_routes, NULL, NULL, 0x00},
+ {0x1E0, 0xE0, 0x00, "Mesquite cPCI (MCP750)", Mesquite_pci_IRQ_map, Raven_pci_IRQ_routes, Powerplus_Map_Non0, &Mesquite_pci_IRQ_list, 0xFF},
+ {0x1E0, 0xE1, 0x00, "Sitka cPCI (MCPN750)", Sitka_pci_IRQ_map, Raven_pci_IRQ_routes, Powerplus_Map_Non0, &Powerplus_pci_IRQ_list, 0xFF},
+ {0x1E0, 0xE2, 0x00, "Mesquite cPCI (MCP750) w/ HAC", Mesquite_pci_IRQ_map, Raven_pci_IRQ_routes, Powerplus_Map_Non0, &Mesquite_pci_IRQ_list, 0xC0},
+ {0x1E0, 0xF6, 0x80, "MTX Plus", MTXplus_pci_IRQ_map, Raven_pci_IRQ_routes, Powerplus_Map_Non0, &Powerplus_pci_IRQ_list, 0xA0},
+ {0x1E0, 0xF6, 0x81, "Dual MTX Plus", MTXplus_pci_IRQ_map, Raven_pci_IRQ_routes, Powerplus_Map_Non0, &Powerplus_pci_IRQ_list, 0xA0},
+ {0x1E0, 0xF7, 0x80, "MTX wo/ Parallel Port", MTX_pci_IRQ_map, Raven_pci_IRQ_routes, Powerplus_Map_Non0, &Powerplus_pci_IRQ_list, 0x00},
+ {0x1E0, 0xF7, 0x81, "Dual MTX wo/ Parallel Port", MTX_pci_IRQ_map, Raven_pci_IRQ_routes, Powerplus_Map_Non0, &Powerplus_pci_IRQ_list, 0x00},
+ {0x1E0, 0xF8, 0x80, "MTX w/ Parallel Port", MTX_pci_IRQ_map, Raven_pci_IRQ_routes, Powerplus_Map_Non0, &Powerplus_pci_IRQ_list, 0x00},
+ {0x1E0, 0xF8, 0x81, "Dual MTX w/ Parallel Port", MTX_pci_IRQ_map, Raven_pci_IRQ_routes, Powerplus_Map_Non0, &Powerplus_pci_IRQ_list, 0x00},
+ {0x1E0, 0xF9, 0x00, "MVME 2300", Genesis2_pci_IRQ_map, Raven_pci_IRQ_routes, Powerplus_Map_Non0, &Powerplus_pci_IRQ_list, 0xFF},
+ {0x1E0, 0xFA, 0x00, "MVME 2300SC/2600", Genesis2_pci_IRQ_map, Raven_pci_IRQ_routes, Powerplus_Map_Non0, &Powerplus_pci_IRQ_list, 0xFF},
+ {0x1E0, 0xFB, 0x00, "MVME 2600 with MVME712M", Genesis2_pci_IRQ_map, Raven_pci_IRQ_routes, Powerplus_Map_Non0, &Powerplus_pci_IRQ_list, 0xFF},
+ {0x1E0, 0xFC, 0x00, "MVME 2600/2700 with MVME761", Genesis2_pci_IRQ_map, Raven_pci_IRQ_routes, Powerplus_Map_Non0, &Powerplus_pci_IRQ_list, 0xFF},
+ {0x1E0, 0xFD, 0x80, "MVME 3600 with MVME712M", Genesis2_pci_IRQ_map, Raven_pci_IRQ_routes, Powerplus_Map_Non0, &Powerplus_pci_IRQ_list, 0x00},
+ {0x1E0, 0xFD, 0x81, "MVME 4600 with MVME712M", Genesis2_pci_IRQ_map, Raven_pci_IRQ_routes, Powerplus_Map_Non0, &Powerplus_pci_IRQ_list, 0xFF},
+ {0x1E0, 0xFE, 0x80, "MVME 3600 with MVME761", Genesis2_pci_IRQ_map, Raven_pci_IRQ_routes, Powerplus_Map_Non0, &Powerplus_pci_IRQ_list, 0xFF},
+ {0x1E0, 0xFE, 0x81, "MVME 4600 with MVME761", Genesis2_pci_IRQ_map, Raven_pci_IRQ_routes, Powerplus_Map_Non0, &Powerplus_pci_IRQ_list, 0xFF},
+ {0x1E0, 0xFF, 0x00, "MVME 1600-001 or 1600-011", Genesis2_pci_IRQ_map, Raven_pci_IRQ_routes, Powerplus_Map_Non0, &Powerplus_pci_IRQ_list, 0xFF},
+ {0x000, 0x00, 0x00, "", NULL, NULL, NULL, NULL, 0x00}
+};
+
+void __init
+ibm_prep_init(void)
+{
+ if (have_residual_data) {
+ u32 addr, real_addr, len, offset;
+ PPC_DEVICE *mpic;
+ PnP_TAG_PACKET *pkt;
+
+ /* Use the PReP residual data to determine if an OpenPIC is
+ * present. If so, get the large vendor packet which will
+ * tell us the base address and length in memory.
+ * If we are successful, ioremap the memory area and set
+ * OpenPIC_Addr (this indicates that the OpenPIC was found).
+ */
+ mpic = residual_find_device(-1, NULL, SystemPeripheral,
+ ProgrammableInterruptController, MPIC, 0);
+ if (!mpic)
+ return;
+
+ pkt = PnP_find_large_vendor_packet(res->DevicePnPHeap +
+ mpic->AllocatedOffset, 9, 0);
+
+ if (!pkt)
+ return;
+
+#define p pkt->L4_Pack.L4_Data.L4_PPCPack
+ if (p.PPCData[1] == 32) {
+ switch (p.PPCData[0]) {
+ case 1: offset = PREP_ISA_IO_BASE; break;
+ case 2: offset = PREP_ISA_MEM_BASE; break;
+ default: return; /* Not I/O or memory?? */
+ }
+ }
+ else
+ return; /* Not a 32-bit address */
+
+ real_addr = ld_le32((unsigned int *) (p.PPCData + 4));
+ if (real_addr == 0xffffffff)
+ return;
+
+ /* Adjust address to be as seen by CPU */
+ addr = real_addr + offset;
+
+ len = ld_le32((unsigned int *) (p.PPCData + 12));
+ if (!len)
+ return;
+#undef p
+ OpenPIC_Addr = ioremap(addr, len);
+ ppc_md.get_irq = openpic_get_irq;
+
+ OpenPIC_InitSenses = prep_openpic_initsenses;
+ OpenPIC_NumInitSenses = sizeof(prep_openpic_initsenses);
+
+ printk(KERN_INFO "MPIC at 0x%08x (0x%08x), length 0x%08x "
+ "mapped to 0x%p\n", addr, real_addr, len, OpenPIC_Addr);
+ }
+}
+
+static void __init
+ibm43p_pci_map_non0(struct pci_dev *dev)
+{
+ unsigned char intpin;
+ static unsigned char bridge_intrs[4] = { 3, 4, 5, 8 };
+
+ if (dev == NULL)
+ return;
+ pci_read_config_byte(dev, PCI_INTERRUPT_PIN, &intpin);
+ if (intpin < 1 || intpin > 4)
+ return;
+ intpin = (PCI_SLOT(dev->devfn) + intpin - 1) & 3;
+ dev->irq = openpic_to_irq(bridge_intrs[intpin]);
+ pci_write_config_byte(dev, PCI_INTERRUPT_LINE, dev->irq);
+}
+
+void __init
+prep_residual_setup_pci(char *irq_edge_mask_lo, char *irq_edge_mask_hi)
+{
+ if (have_residual_data) {
+ Motherboard_map_name = res->VitalProductData.PrintableModel;
+ Motherboard_map = NULL;
+ Motherboard_routes = NULL;
+ residual_irq_mask(irq_edge_mask_lo, irq_edge_mask_hi);
+ }
+}
+
+void __init
+prep_sandalfoot_setup_pci(char *irq_edge_mask_lo, char *irq_edge_mask_hi)
+{
+ Motherboard_map_name = "IBM 6015/7020 (Sandalfoot/Sandalbow)";
+ Motherboard_map = ibm6015_pci_IRQ_map;
+ Motherboard_routes = ibm6015_pci_IRQ_routes;
+ *irq_edge_mask_lo = 0x00; /* irq's 0-7 all edge-triggered */
+ *irq_edge_mask_hi = 0xA0; /* irq's 13, 15 level-triggered */
+}
+
+void __init
+prep_thinkpad_setup_pci(char *irq_edge_mask_lo, char *irq_edge_mask_hi)
+{
+ Motherboard_map_name = "IBM Thinkpad 850/860";
+ Motherboard_map = Nobis_pci_IRQ_map;
+ Motherboard_routes = Nobis_pci_IRQ_routes;
+ *irq_edge_mask_lo = 0x00; /* irq's 0-7 all edge-triggered */
+ *irq_edge_mask_hi = 0xA0; /* irq's 13, 15 level-triggered */
+}
+
+void __init
+prep_carolina_setup_pci(char *irq_edge_mask_lo, char *irq_edge_mask_hi)
+{
+ Motherboard_map_name = "IBM 7248, PowerSeries 830/850 (Carolina)";
+ Motherboard_map = ibm8xx_pci_IRQ_map;
+ Motherboard_routes = ibm8xx_pci_IRQ_routes;
+ *irq_edge_mask_lo = 0x00; /* irq's 0-7 all edge-triggered */
+ *irq_edge_mask_hi = 0xA4; /* irq's 10, 13, 15 level-triggered */
+}
+
+void __init
+prep_tiger1_setup_pci(char *irq_edge_mask_lo, char *irq_edge_mask_hi)
+{
+ Motherboard_map_name = "IBM 43P-140 (Tiger1)";
+ Motherboard_map = ibm43p_pci_IRQ_map;
+ Motherboard_routes = ibm43p_pci_IRQ_routes;
+ Motherboard_non0 = ibm43p_pci_map_non0;
+ *irq_edge_mask_lo = 0x00; /* irq's 0-7 all edge-triggered */
+ *irq_edge_mask_hi = 0xA0; /* irq's 13, 15 level-triggered */
+}
+
+void __init
+prep_route_pci_interrupts(void)
+{
+ unsigned char *ibc_pirq = (unsigned char *)0x80800860;
+ unsigned char *ibc_pcicon = (unsigned char *)0x80800840;
+ int i;
+
+ if ( _prep_type == _PREP_Motorola)
+ {
+ unsigned short irq_mode;
+ unsigned char cpu_type;
+ unsigned char base_mod;
+ int entry;
+
+ cpu_type = inb(MOTOROLA_CPUTYPE_REG) & 0xF0;
+ base_mod = inb(MOTOROLA_BASETYPE_REG);
+
+ for (entry = 0; mot_info[entry].cpu_type != 0; entry++) {
+ if (mot_info[entry].cpu_type & 0x200) { /* Check for Hawk chip */
+ if (!(MotMPIC & MOT_HAWK_PRESENT))
+ continue;
+ } else { /* Check non hawk boards */
+ if ((mot_info[entry].cpu_type & 0xff) != cpu_type)
+ continue;
+
+ if (mot_info[entry].base_type == 0) {
+ mot_entry = entry;
+ break;
+ }
+
+ if (mot_info[entry].base_type != base_mod)
+ continue;
+ }
+
+ if (!(mot_info[entry].max_cpu & 0x80)) {
+ mot_entry = entry;
+ break;
+ }
+
+ /* processor 1 not present and max processor zero indicated */
+ if ((*ProcInfo & MOT_PROC2_BIT) && !(mot_info[entry].max_cpu & 0x7f)) {
+ mot_entry = entry;
+ break;
+ }
+
+ /* processor 1 present and max processor zero indicated */
+ if (!(*ProcInfo & MOT_PROC2_BIT) && (mot_info[entry].max_cpu & 0x7f)) {
+ mot_entry = entry;
+ break;
+ }
+ }
+
+ if (mot_entry == -1) /* No particular cpu type found - assume Blackhawk */
+ mot_entry = 3;
+
+ Motherboard_map_name = (unsigned char *)mot_info[mot_entry].name;
+ Motherboard_map = mot_info[mot_entry].map;
+ Motherboard_routes = mot_info[mot_entry].routes;
+ Motherboard_non0 = mot_info[mot_entry].map_non0_bus;
+
+ if (!(mot_info[entry].cpu_type & 0x100)) {
+ /* AJF adjust level/edge control according to routes */
+ irq_mode = 0;
+ for (i = 1; i <= 4; i++)
+ irq_mode |= ( 1 << Motherboard_routes[i] );
+ outb( irq_mode & 0xff, 0x4d0 );
+ outb( (irq_mode >> 8) & 0xff, 0x4d1 );
+ }
+ } else if ( _prep_type == _PREP_IBM ) {
+ unsigned char irq_edge_mask_lo, irq_edge_mask_hi;
+ unsigned short irq_edge_mask;
+ int i;
+
+ setup_ibm_pci(&irq_edge_mask_lo, &irq_edge_mask_hi);
+
+ outb(inb(0x04d0)|irq_edge_mask_lo, 0x4d0); /* primary 8259 */
+ outb(inb(0x04d1)|irq_edge_mask_hi, 0x4d1); /* cascaded 8259 */
+
+ irq_edge_mask = (irq_edge_mask_hi << 8) | irq_edge_mask_lo;
+ for (i = 0; i < 16; ++i, irq_edge_mask >>= 1)
+ if (irq_edge_mask & 1)
+ irq_desc[i].status |= IRQ_LEVEL;
+ } else {
+ printk("No known machine pci routing!\n");
+ return;
+ }
+
+ /* Set up mapping from slots */
+ if (Motherboard_routes) {
+ for (i = 1; i <= 4; i++)
+ ibc_pirq[i-1] = Motherboard_routes[i];
+
+ /* Enable PCI interrupts */
+ *ibc_pcicon |= 0x20;
+ }
+}
+
+void __init
+prep_pib_init(void)
+{
+ unsigned char reg;
+ unsigned short short_reg;
+
+ struct pci_dev *dev = NULL;
+
+ if (( _prep_type == _PREP_Motorola) && (OpenPIC_Addr)) {
+ /*
+ * Perform specific configuration for the Via Tech or
+ * or Winbond PCI-ISA-Bridge part.
+ */
+ if ((dev = pci_get_device(PCI_VENDOR_ID_VIA,
+ PCI_DEVICE_ID_VIA_82C586_1, dev))) {
+ /*
+ * PPCBUG does not set the enable bits
+ * for the IDE device. Force them on here.
+ */
+ pci_read_config_byte(dev, 0x40, &reg);
+
+ reg |= 0x03; /* IDE: Chip Enable Bits */
+ pci_write_config_byte(dev, 0x40, reg);
+ }
+ if ((dev = pci_get_device(PCI_VENDOR_ID_VIA,
+ PCI_DEVICE_ID_VIA_82C586_2,
+ dev)) && (dev->devfn = 0x5a)) {
+ /* Force correct USB interrupt */
+ dev->irq = 11;
+ pci_write_config_byte(dev,
+ PCI_INTERRUPT_LINE,
+ dev->irq);
+ }
+ if ((dev = pci_get_device(PCI_VENDOR_ID_WINBOND,
+ PCI_DEVICE_ID_WINBOND_83C553, dev))) {
+ /* Clear PCI Interrupt Routing Control Register. */
+ short_reg = 0x0000;
+ pci_write_config_word(dev, 0x44, short_reg);
+ if (OpenPIC_Addr){
+ /* Route IDE interrupts to IRQ 14 */
+ reg = 0xEE;
+ pci_write_config_byte(dev, 0x43, reg);
+ }
+ }
+ pci_dev_put(dev);
+ }
+
+ if ((dev = pci_get_device(PCI_VENDOR_ID_WINBOND,
+ PCI_DEVICE_ID_WINBOND_82C105, dev))){
+ if (OpenPIC_Addr){
+ /*
+ * Disable LEGIRQ mode so PCI INTS are routed
+ * directly to the 8259 and enable both channels
+ */
+ pci_write_config_dword(dev, 0x40, 0x10ff0033);
+
+ /* Force correct IDE interrupt */
+ dev->irq = 14;
+ pci_write_config_byte(dev,
+ PCI_INTERRUPT_LINE,
+ dev->irq);
+ } else {
+ /* Enable LEGIRQ for PCI INT -> 8259 IRQ routing */
+ pci_write_config_dword(dev, 0x40, 0x10ff08a1);
+ }
+ }
+ pci_dev_put(dev);
+}
+
+static void __init
+Powerplus_Map_Non0(struct pci_dev *dev)
+{
+ struct pci_bus *pbus; /* Parent bus structure pointer */
+ struct pci_dev *tdev = dev; /* Temporary device structure */
+ unsigned int devnum; /* Accumulated device number */
+ unsigned char intline; /* Linux interrupt value */
+ unsigned char intpin; /* PCI interrupt pin */
+
+ /* Check for valid PCI dev pointer */
+ if (dev == NULL) return;
+
+ /* Initialize bridge IDSEL variable */
+ devnum = PCI_SLOT(tdev->devfn);
+
+ /* Read the interrupt pin of the device and adjust for indexing */
+ pci_read_config_byte(dev, PCI_INTERRUPT_PIN, &intpin);
+
+ /* If device doesn't request an interrupt, return */
+ if ( (intpin < 1) || (intpin > 4) )
+ return;
+
+ intpin--;
+
+ /*
+ * Walk up to bus 0, adjusting the interrupt pin for the standard
+ * PCI bus swizzle.
+ */
+ do {
+ intpin = (prep_pci_intpins[devnum % 4][intpin]) - 1;
+ pbus = tdev->bus; /* up one level */
+ tdev = pbus->self;
+ devnum = PCI_SLOT(tdev->devfn);
+ } while(tdev->bus->number);
+
+ /* Use the primary interrupt inputs by default */
+ intline = mot_info[mot_entry].pci_irq_list->primary[intpin];
+
+ /*
+ * If the board has secondary interrupt inputs, walk the bus and
+ * note the devfn of the bridge from bus 0. If it is the same as
+ * the devfn of the bus bridge with secondary inputs, use those.
+ * Otherwise, assume it's a PMC site and get the interrupt line
+ * value from the interrupt routing table.
+ */
+ if (mot_info[mot_entry].secondary_bridge_devfn) {
+ pbus = dev->bus;
+
+ while (pbus->primary != 0)
+ pbus = pbus->parent;
+
+ if ((pbus->self)->devfn != 0xA0) {
+ if ((pbus->self)->devfn == mot_info[mot_entry].secondary_bridge_devfn)
+ intline = mot_info[mot_entry].pci_irq_list->secondary[intpin];
+ else {
+ if ((char *)(mot_info[mot_entry].map) == (char *)Mesquite_pci_IRQ_map)
+ intline = mot_info[mot_entry].map[((pbus->self)->devfn)/8] + 16;
+ else {
+ int i;
+ for (i=0;i<3;i++)
+ intpin = (prep_pci_intpins[devnum % 4][intpin]) - 1;
+ intline = mot_info[mot_entry].pci_irq_list->primary[intpin];
+ }
+ }
+ }
+ }
+
+ /* Write calculated interrupt value to header and device list */
+ dev->irq = intline;
+ pci_write_config_byte(dev, PCI_INTERRUPT_LINE, (u8)dev->irq);
+}
+
+void __init
+prep_pcibios_fixup(void)
+{
+ struct pci_dev *dev = NULL;
+ int irq;
+ int have_openpic = (OpenPIC_Addr != NULL);
+
+ prep_route_pci_interrupts();
+
+ printk("Setting PCI interrupts for a \"%s\"\n", Motherboard_map_name);
+
+ /* Iterate through all the PCI devices, setting the IRQ */
+ for_each_pci_dev(dev) {
+ /*
+ * If we have residual data, then this is easy: query the
+ * residual data for the IRQ line allocated to the device.
+ * This works the same whether we have an OpenPic or not.
+ */
+ if (have_residual_data) {
+ irq = residual_pcidev_irq(dev);
+ dev->irq = have_openpic ? openpic_to_irq(irq) : irq;
+ }
+ /*
+ * If we don't have residual data, then we need to use
+ * tables to determine the IRQ. The table organisation
+ * is different depending on whether there is an OpenPIC
+ * or not. The tables are only used for bus 0, so check
+ * this first.
+ */
+ else if (dev->bus->number == 0) {
+ irq = Motherboard_map[PCI_SLOT(dev->devfn)];
+ dev->irq = have_openpic ? openpic_to_irq(irq)
+ : Motherboard_routes[irq];
+ }
+ /*
+ * Finally, if we don't have residual data and the bus is
+ * non-zero, use the callback (if provided)
+ */
+ else {
+ if (Motherboard_non0 != NULL)
+ Motherboard_non0(dev);
+
+ continue;
+ }
+
+ pci_write_config_byte(dev, PCI_INTERRUPT_LINE, dev->irq);
+ }
+
+ /* Setup the Winbond or Via PIB */
+ prep_pib_init();
+}
+
+static void __init
+prep_pcibios_after_init(void)
+{
+#if 0
+ struct pci_dev *dev;
+
+ /* If there is a WD 90C, reset the IO BAR to 0x0 (it started that
+ * way, but the PCI layer relocated it because it thought 0x0 was
+ * invalid for a BAR).
+ * If you don't do this, the card's VGA base will be <IO BAR>+0xc0000
+ * instead of 0xc0000. vgacon.c (for example) is completely unaware of
+ * this little quirk.
+ */
+ dev = pci_get_device(PCI_VENDOR_ID_WD, PCI_DEVICE_ID_WD_90C, NULL);
+ if (dev) {
+ dev->resource[1].end -= dev->resource[1].start;
+ dev->resource[1].start = 0;
+ /* tell the hardware */
+ pci_write_config_dword(dev, PCI_BASE_ADDRESS_1, 0x0);
+ pci_dev_put(dev);
+ }
+#endif
+}
+
+static void __init
+prep_init_resource(struct resource *res, unsigned long start,
+ unsigned long end, int flags)
+{
+ res->flags = flags;
+ res->start = start;
+ res->end = end;
+ res->name = "PCI host bridge";
+ res->parent = NULL;
+ res->sibling = NULL;
+ res->child = NULL;
+}
+
+void __init
+prep_find_bridges(void)
+{
+ struct pci_controller* hose;
+
+ hose = pcibios_alloc_controller();
+ if (!hose)
+ return;
+
+ hose->first_busno = 0;
+ hose->last_busno = 0xff;
+ hose->pci_mem_offset = PREP_ISA_MEM_BASE;
+ hose->io_base_phys = PREP_ISA_IO_BASE;
+ hose->io_base_virt = ioremap(PREP_ISA_IO_BASE, 0x800000);
+ prep_init_resource(&hose->io_resource, 0, 0x007fffff, IORESOURCE_IO);
+ prep_init_resource(&hose->mem_resources[0], 0xc0000000, 0xfeffffff,
+ IORESOURCE_MEM);
+ setup_indirect_pci(hose, PREP_ISA_IO_BASE + 0xcf8,
+ PREP_ISA_IO_BASE + 0xcfc);
+
+ printk("PReP architecture\n");
+
+ if (have_residual_data) {
+ PPC_DEVICE *hostbridge;
+
+ hostbridge = residual_find_device(PROCESSORDEVICE, NULL,
+ BridgeController, PCIBridge, -1, 0);
+ if (hostbridge &&
+ ((hostbridge->DeviceId.Interface == PCIBridgeIndirect) ||
+ (hostbridge->DeviceId.Interface == PCIBridgeRS6K))) {
+ PnP_TAG_PACKET * pkt;
+ pkt = PnP_find_large_vendor_packet(
+ res->DevicePnPHeap+hostbridge->AllocatedOffset,
+ 3, 0);
+ if(pkt) {
+#define p pkt->L4_Pack.L4_Data.L4_PPCPack
+ setup_indirect_pci(hose,
+ ld_le32((unsigned *) (p.PPCData)),
+ ld_le32((unsigned *) (p.PPCData+8)));
+#undef p
+ } else
+ setup_indirect_pci(hose, 0x80000cf8, 0x80000cfc);
+ }
+ }
+
+ ppc_md.pcibios_fixup = prep_pcibios_fixup;
+ ppc_md.pcibios_after_init = prep_pcibios_after_init;
+}