[PATCH] ppc32: Update Motorola PrPMC750 support

From: Tom Rini <trini@kernel.crashing.org>

This patch updates support for the Motorola PrPMC750 platform.  Most of the
size in this patch comes from merging prpmc750_pci.c and prpmc750_setup.c into
just prpmc750.c.

arch/ppc/Kconfig

@@ -609,7 +609,7 @@ config PPC_OF
 
 config PPC_GEN550
 	bool
-	depends on SANDPOINT || MCPN765 || SPRUCE || PPLUS || PCORE || K2
+	depends on SANDPOINT || MCPN765 || SPRUCE || PPLUS || PCORE || PRPMC750 || K2
 	default y
 
 config FORCE

arch/ppc/platforms/Makefile

@@ -42,7 +42,7 @@ obj-$(CONFIG_PAL4)		+= pal4_setup.o pal4_pci.o
 obj-$(CONFIG_PCORE)		+= pcore.o
 obj-$(CONFIG_POWERPMC250)	+= powerpmc250.o
 obj-$(CONFIG_PPLUS)		+= pplus.o
-obj-$(CONFIG_PRPMC750)		+= prpmc750_setup.o prpmc750_pci.o
+obj-$(CONFIG_PRPMC750)		+= prpmc750.o
 obj-$(CONFIG_PRPMC800)		+= prpmc800_setup.o prpmc800_pci.o
 obj-$(CONFIG_SANDPOINT)		+= sandpoint.o
 obj-$(CONFIG_SPRUCE)		+= spruce.o

arch/ppc/platforms/prpmc750.h

@@ -19,27 +19,47 @@
 
 #include <linux/serial_reg.h>
 
-#define PRPMC750_PCI_CONFIG_ADDR	0x80000cf8
-#define PRPMC750_PCI_CONFIG_DATA	0x80000cfc
+/*
+ * Due to limiations imposed by legacy hardware (primaryily IDE controllers),
+ * the PrPMC750 carrier board operates using a PReP address map.
+ *
+ * From Processor (physical) -> PCI:
+ *   PCI Mem Space: 0xc0000000 - 0xfe000000 -> 0x00000000 - 0x3e000000 (768 MB)
+ *   PCI I/O Space: 0x80000000 - 0x90000000 -> 0x00000000 - 0x10000000 (256 MB)
+ *	Note: Must skip 0xfe000000-0xfe400000 for CONFIG_HIGHMEM/PKMAP area
+ *
+ * From PCI -> Processor (physical):
+ *   System Memory: 0x80000000 -> 0x00000000
+ */
 
-#define PRPMC750_PCI_PHY_MEM_BASE	0xc0000000
-#define PRPMC750_PCI_MEM_BASE		0xf0000000
-#define PRPMC750_PCI_IO_BASE		0x80000000
+#define PRPMC750_ISA_IO_BASE		PREP_ISA_IO_BASE
+#define PRPMC750_ISA_MEM_BASE		PREP_ISA_MEM_BASE
 
-#define PRPMC750_ISA_IO_BASE		PRPMC750_PCI_IO_BASE
-#define PRPMC750_ISA_MEM_BASE		PRPMC750_PCI_MEM_BASE
-#define PRPMC750_PCI_MEM_OFFSET		PRPMC750_PCI_PHY_MEM_BASE
+/* PCI Memory space mapping info */
+#define PRPMC750_PCI_MEM_SIZE		0x30000000U
+#define PRPMC750_PROC_PCI_MEM_START	PRPMC750_ISA_MEM_BASE
+#define PRPMC750_PROC_PCI_MEM_END	(PRPMC750_PROC_PCI_MEM_START +	\
+					 PRPMC750_PCI_MEM_SIZE - 1)
+#define PRPMC750_PCI_MEM_START		0x00000000U
+#define PRPMC750_PCI_MEM_END		(PRPMC750_PCI_MEM_START +	\
+					 PRPMC750_PCI_MEM_SIZE - 1)
 
-#define PRPMC750_SYS_MEM_BASE		0x80000000
+/* PCI I/O space mapping info */
+#define PRPMC750_PCI_IO_SIZE		0x10000000U
+#define PRPMC750_PROC_PCI_IO_START	PRPMC750_ISA_IO_BASE
+#define PRPMC750_PROC_PCI_IO_END	(PRPMC750_PROC_PCI_IO_START +	\
+					 PRPMC750_PCI_IO_SIZE - 1)
+#define PRPMC750_PCI_IO_START		0x00000000U
+#define PRPMC750_PCI_IO_END		(PRPMC750_PCI_IO_START + 	\
+					 PRPMC750_PCI_IO_SIZE - 1)
 
-#define PRPMC750_PCI_LOWER_MEM		0x00000000
-#define PRPMC750_PCI_UPPER_MEM_AUTO	0x3bf7ffff
-#define PRPMC750_PCI_UPPER_MEM		0x3bffffff
-#define PRPMC750_PCI_LOWER_IO		0x00000000
-#define PRPMC750_PCI_UPPER_IO		0x0ff7ffff
+/* System memory mapping info */
+#define PRPMC750_PCI_DRAM_OFFSET	PREP_PCI_DRAM_OFFSET
+#define PRPMC750_PCI_PHY_MEM_OFFSET	(PRPMC750_ISA_MEM_BASE-PRPMC750_PCI_MEM_START)
 
-#define PRPMC750_HAWK_MPIC_BASE		0xfbf80000
-#define PRPMC750_HAWK_SMC_BASE		0xfef80000
+/* Register address definitions */
+#define PRPMC750_HAWK_SMC_BASE		0xfef80000U
+#define PRPMC750_HAWK_PPC_REG_BASE	0xfeff0000U
 
 #define PRPMC750_BASE_BAUD		1843200
 #define PRPMC750_SERIAL_0		0xfef88000

arch/ppc/platforms/prpmc750_pci.c

-/*
- * arch/ppc/platforms/prpmc750_pci.c
- *
- * PCI support for Motorola PrPMC750
- *
- * Author: Matt Porter <mporter@mvista.com>
- *
- * 2001 (c) MontaVista, Software, Inc.  This file is licensed under
- * the terms of the GNU General Public License version 2.  This program
- * is licensed "as is" without any warranty of any kind, whether express
- * or implied.
- */
-
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/pci.h>
-#include <linux/slab.h>
-
-#include <asm/byteorder.h>
-#include <asm/io.h>
-#include <asm/irq.h>
-#include <asm/uaccess.h>
-#include <asm/machdep.h>
-#include <asm/pci-bridge.h>
-#include <platforms/prpmc750.h>
-
-/*
- * Motorola PrPMC750/PrPMC800 in PrPMCBASE or PrPMC-Carrier
- * Combined irq tables.  Only Base has IDSEL 14, only Carrier has 21 and 22.
- */
-static inline int
-prpmc_map_irq(struct pci_dev *dev, unsigned char idsel, unsigned char pin)
-{
-	static char pci_irq_table[][4] =
-	/*
-	 *      PCI IDSEL/INTPIN->INTLINE
-	 *      A       B       C       D
-	 */
-	{
-		{12,	0,	0,	0},  /* IDSEL 14 - Ethernet, base */
-		{0,	0,	0,	0},  /* IDSEL 15 - unused */
-		{10,	11,	12,	9},  /* IDSEL 16 - PMC A1, PMC1 */
-		{10,	11,	12,	9},  /* IDSEL 17 - PrPMC-A-B, PMC2-B */
-		{11,	12,	9,	10}, /* IDSEL 18 - PMC A1-B, PMC1-B */
-		{0,	0,	0,	0},  /* IDSEL 19 - unused */
-		{9,	10,	11,	12}, /* IDSEL 20 - P2P Bridge */
-		{11,	12,	9,	10}, /* IDSEL 21 - PMC A2, carrier */
-		{12,	9,	10,	11}, /* IDSEL 22 - PMC A2-B, carrier */
-	};
-	const long min_idsel = 14, max_idsel = 22, irqs_per_slot = 4;
-	return PCI_IRQ_TABLE_LOOKUP;
-};
-
-static void __init
-prpmc750_pcibios_fixup(void)
-{
-	struct pci_dev *dev;
-	unsigned short wtmp;
-
-	/*
-	 * Kludge to clean up after PPC6BUG which doesn't
-	 * configure the CL5446 VGA card.  Also the
-	 * resource subsystem doesn't fixup the
-	 * PCI mem resources on the CL5446.
-	 */
-	if ((dev = pci_find_device(PCI_VENDOR_ID_CIRRUS,
-				PCI_DEVICE_ID_CIRRUS_5446, 0)))
-	{
-		dev->resource[0].start += PRPMC750_PCI_PHY_MEM_BASE;
-		dev->resource[0].end += PRPMC750_PCI_PHY_MEM_BASE;
-		pci_read_config_word(dev,
-				PCI_COMMAND,
-				&wtmp);
-		pci_write_config_word(dev,
-				PCI_COMMAND,
-				wtmp|3);
-		/* Enable Color mode in MISC reg */
-		outb(0x03, 0x3c2);
-		/* Select DRAM config reg */
-		outb(0x0f, 0x3c4);
-		/* Set proper DRAM config */
-		outb(0xdf, 0x3c5);
-	}
-}
-
-void __init
-prpmc750_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 = PRPMC750_PCI_PHY_MEM_BASE;
-
-	pci_init_resource(&hose->io_resource,
-			PRPMC750_PCI_LOWER_IO,
-			PRPMC750_PCI_UPPER_IO,
-			IORESOURCE_IO,
-			"PCI host bridge");
-
-	pci_init_resource(&hose->mem_resources[0],
-			PRPMC750_PCI_LOWER_MEM + PRPMC750_PCI_PHY_MEM_BASE,
-			PRPMC750_PCI_UPPER_MEM + PRPMC750_PCI_PHY_MEM_BASE,
-			IORESOURCE_MEM,
-			"PCI host bridge");
-
-	hose->io_space.start = PRPMC750_PCI_LOWER_IO;
-	hose->io_space.end = PRPMC750_PCI_UPPER_IO;
-	hose->mem_space.start = PRPMC750_PCI_LOWER_MEM;
-	hose->mem_space.end = PRPMC750_PCI_UPPER_MEM_AUTO;
-
-	hose->io_base_virt = (void *)PRPMC750_ISA_IO_BASE;
-
-	setup_indirect_pci(hose,
-			PRPMC750_PCI_CONFIG_ADDR,
-			PRPMC750_PCI_CONFIG_DATA);
-
-	/*
-	 * Disable MPIC response to PCI I/O space (BAR 0).
-	 * Make MPIC respond to PCI Mem space at specified address.
-	 * (BAR 1).
-	 */
-	early_write_config_dword(hose,
-			         0,
-			         PCI_DEVFN(0,0),
-			         PCI_BASE_ADDRESS_0,
-			         0x00000000 | 0x1);
-
-	early_write_config_dword(hose,
-			         0,
-			         PCI_DEVFN(0,0),
-			         PCI_BASE_ADDRESS_1,
-			         (PRPMC750_HAWK_MPIC_BASE -
-				 	PRPMC750_PCI_MEM_OFFSET) | 0x0);
-
-	hose->last_busno = pciauto_bus_scan(hose, hose->first_busno);
-
-	ppc_md.pcibios_fixup = prpmc750_pcibios_fixup;
-	ppc_md.pci_swizzle = common_swizzle;
-	ppc_md.pci_map_irq = prpmc_map_irq;
-}