Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 387 insertions, 0 deletions

diff --git a/arch/ppc/platforms/4xx/luan.c b/arch/ppc/platforms/4xx/luan.c
new file mode 100644
index 000000000000..1df2339f1f6c
--- /dev/null
+++ b/arch/ppc/platforms/4xx/luan.c
@@ -0,0 +1,387 @@
+/*
+ * arch/ppc/platforms/4xx/luan.c
+ *
+ * Luan board specific routines
+ *
+ * Matt Porter <mporter@kernel.crashing.org>
+ *
+ * Copyright 2004-2005 MontaVista Software Inc.
+ *
+ * This program is free software; you can redistribute  it and/or modify it
+ * under  the terms of  the GNU General  Public License as published by the
+ * Free Software Foundation;  either version 2 of the  License, or (at your
+ * option) any later version.
+ */
+
+#include <linux/config.h>
+#include <linux/stddef.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/errno.h>
+#include <linux/reboot.h>
+#include <linux/pci.h>
+#include <linux/kdev_t.h>
+#include <linux/types.h>
+#include <linux/major.h>
+#include <linux/blkdev.h>
+#include <linux/console.h>
+#include <linux/delay.h>
+#include <linux/ide.h>
+#include <linux/initrd.h>
+#include <linux/irq.h>
+#include <linux/seq_file.h>
+#include <linux/root_dev.h>
+#include <linux/tty.h>
+#include <linux/serial.h>
+#include <linux/serial_core.h>
+
+#include <asm/system.h>
+#include <asm/pgtable.h>
+#include <asm/page.h>
+#include <asm/dma.h>
+#include <asm/io.h>
+#include <asm/machdep.h>
+#include <asm/ocp.h>
+#include <asm/pci-bridge.h>
+#include <asm/time.h>
+#include <asm/todc.h>
+#include <asm/bootinfo.h>
+#include <asm/ppc4xx_pic.h>
+#include <asm/ppcboot.h>
+
+#include <syslib/ibm44x_common.h>
+#include <syslib/ibm440gx_common.h>
+#include <syslib/ibm440sp_common.h>
+
+/*
+ * This is a horrible kludge, we eventually need to abstract this
+ * generic PHY stuff, so the  standard phy mode defines can be
+ * easily used from arch code.
+ */
+#include "../../../../drivers/net/ibm_emac/ibm_emac_phy.h"
+
+bd_t __res;
+
+static struct ibm44x_clocks clocks __initdata;
+
+static void __init
+luan_calibrate_decr(void)
+{
+	unsigned int freq;
+
+	if (mfspr(SPRN_CCR1) & CCR1_TCS)
+		freq = LUAN_TMR_CLK;
+	else
+		freq = clocks.cpu;
+
+	ibm44x_calibrate_decr(freq);
+}
+
+static int
+luan_show_cpuinfo(struct seq_file *m)
+{
+	seq_printf(m, "vendor\t\t: IBM\n");
+	seq_printf(m, "machine\t\t: PPC440SP EVB (Luan)\n");
+
+	return 0;
+}
+
+static inline int
+luan_map_irq(struct pci_dev *dev, unsigned char idsel, unsigned char pin)
+{
+	struct pci_controller *hose = pci_bus_to_hose(dev->bus->number);
+
+	/* PCIX0 in adapter mode, no host interrupt routing */
+
+	/* PCIX1 */
+	if (hose->index == 0) {
+		static char pci_irq_table[][4] =
+		/*
+		 *	PCI IDSEL/INTPIN->INTLINE
+		 *	  A   B   C   D
+		 */
+		{
+			{ 49, 49, 49, 49 },	/* IDSEL 1 - PCIX1 Slot 0 */
+			{ 49, 49, 49, 49 },	/* IDSEL 2 - PCIX1 Slot 1 */
+			{ 49, 49, 49, 49 },	/* IDSEL 3 - PCIX1 Slot 2 */
+			{ 49, 49, 49, 49 },	/* IDSEL 4 - PCIX1 Slot 3 */
+		};
+		const long min_idsel = 1, max_idsel = 4, irqs_per_slot = 4;
+		return PCI_IRQ_TABLE_LOOKUP;
+	/* PCIX2 */
+	} else if (hose->index == 1) {
+		static char pci_irq_table[][4] =
+		/*
+		 *	PCI IDSEL/INTPIN->INTLINE
+		 *	  A   B   C   D
+		 */
+		{
+			{ 50, 50, 50, 50 },	/* IDSEL 1 - PCIX2 Slot 0 */
+			{ 50, 50, 50, 50 },	/* IDSEL 2 - PCIX2 Slot 1 */
+			{ 50, 50, 50, 50 },	/* IDSEL 3 - PCIX2 Slot 2 */
+			{ 50, 50, 50, 50 },	/* IDSEL 4 - PCIX2 Slot 3 */
+		};
+		const long min_idsel = 1, max_idsel = 4, irqs_per_slot = 4;
+		return PCI_IRQ_TABLE_LOOKUP;
+	}
+	return -1;
+}
+
+static void __init luan_set_emacdata(void)
+{
+	struct ocp_def *def;
+	struct ocp_func_emac_data *emacdata;
+
+	/* Set phy_map, phy_mode, and mac_addr for the EMAC */
+	def = ocp_get_one_device(OCP_VENDOR_IBM, OCP_FUNC_EMAC, 0);
+	emacdata = def->additions;
+	emacdata->phy_map = 0x00000001;	/* Skip 0x00 */
+	emacdata->phy_mode = PHY_MODE_GMII;
+	memcpy(emacdata->mac_addr, __res.bi_enetaddr, 6);
+}
+
+#define PCIX_READW(offset) \
+	(readw((void *)((u32)pcix_reg_base+offset)))
+
+#define PCIX_WRITEW(value, offset) \
+	(writew(value, (void *)((u32)pcix_reg_base+offset)))
+
+#define PCIX_WRITEL(value, offset) \
+	(writel(value, (void *)((u32)pcix_reg_base+offset)))
+
+static void __init
+luan_setup_pcix(void)
+{
+	int i;
+	void *pcix_reg_base;
+
+	for (i=0;i<3;i++) {
+		pcix_reg_base = ioremap64(PCIX0_REG_BASE + i*PCIX_REG_OFFSET, PCIX_REG_SIZE);
+
+		/* Enable PCIX0 I/O, Mem, and Busmaster cycles */
+		PCIX_WRITEW(PCIX_READW(PCIX0_COMMAND) | PCI_COMMAND_IO | PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER, PCIX0_COMMAND);
+
+		/* Disable all windows */
+		PCIX_WRITEL(0, PCIX0_POM0SA);
+		PCIX_WRITEL(0, PCIX0_POM1SA);
+		PCIX_WRITEL(0, PCIX0_POM2SA);
+		PCIX_WRITEL(0, PCIX0_PIM0SA);
+		PCIX_WRITEL(0, PCIX0_PIM0SAH);
+		PCIX_WRITEL(0, PCIX0_PIM1SA);
+		PCIX_WRITEL(0, PCIX0_PIM2SA);
+		PCIX_WRITEL(0, PCIX0_PIM2SAH);
+
+		/*
+		 * Setup 512MB PLB->PCI outbound mem window
+		 * (a_n000_0000->0_n000_0000)
+		 * */
+		PCIX_WRITEL(0x0000000a, PCIX0_POM0LAH);
+		PCIX_WRITEL(0x80000000 | i*LUAN_PCIX_MEM_SIZE, PCIX0_POM0LAL);
+		PCIX_WRITEL(0x00000000, PCIX0_POM0PCIAH);
+		PCIX_WRITEL(0x80000000 | i*LUAN_PCIX_MEM_SIZE, PCIX0_POM0PCIAL);
+		PCIX_WRITEL(0xe0000001, PCIX0_POM0SA);
+
+		/* Setup 2GB PCI->PLB inbound memory window at 0, enable MSIs */
+		PCIX_WRITEL(0x00000000, PCIX0_PIM0LAH);
+		PCIX_WRITEL(0x00000000, PCIX0_PIM0LAL);
+		PCIX_WRITEL(0xe0000007, PCIX0_PIM0SA);
+		PCIX_WRITEL(0xffffffff, PCIX0_PIM0SAH);
+
+		iounmap(pcix_reg_base);
+	}
+
+	eieio();
+}
+
+static void __init
+luan_setup_hose(struct pci_controller *hose,
+		int lower_mem,
+		int upper_mem,
+		int cfga,
+		int cfgd,
+		u64 pcix_io_base)
+{
+	char name[20];
+
+	sprintf(name, "PCIX%d host bridge", hose->index);
+
+	hose->pci_mem_offset = LUAN_PCIX_MEM_OFFSET;
+
+	pci_init_resource(&hose->io_resource,
+			LUAN_PCIX_LOWER_IO,
+			LUAN_PCIX_UPPER_IO,
+			IORESOURCE_IO,
+			name);
+
+	pci_init_resource(&hose->mem_resources[0],
+			lower_mem,
+			upper_mem,
+			IORESOURCE_MEM,
+			name);
+
+	hose->io_space.start = LUAN_PCIX_LOWER_IO;
+	hose->io_space.end = LUAN_PCIX_UPPER_IO;
+	hose->mem_space.start = lower_mem;
+	hose->mem_space.end = upper_mem;
+	isa_io_base =
+		(unsigned long)ioremap64(pcix_io_base, PCIX_IO_SIZE);
+	hose->io_base_virt = (void *)isa_io_base;
+
+	setup_indirect_pci(hose, cfga, cfgd);
+	hose->set_cfg_type = 1;
+}
+
+static void __init
+luan_setup_hoses(void)
+{
+	struct pci_controller *hose1, *hose2;
+
+	/* Configure windows on the PCI-X host bridge */
+	luan_setup_pcix();
+
+	/* Allocate hoses for PCIX1 and PCIX2 */
+	hose1 = pcibios_alloc_controller();
+	hose2 = pcibios_alloc_controller();
+	if (!hose1 || !hose2)
+		return;
+
+	/* Setup PCIX1 */
+	hose1->first_busno = 0;
+	hose1->last_busno = 0xff;
+
+	luan_setup_hose(hose1,
+			LUAN_PCIX1_LOWER_MEM,
+			LUAN_PCIX1_UPPER_MEM,
+			PCIX1_CFGA,
+			PCIX1_CFGD,
+			PCIX1_IO_BASE);
+
+	hose1->last_busno = pciauto_bus_scan(hose1, hose1->first_busno);
+
+	/* Setup PCIX2 */
+	hose2->first_busno = hose1->last_busno + 1;
+	hose2->last_busno = 0xff;
+
+	luan_setup_hose(hose2,
+			LUAN_PCIX2_LOWER_MEM,
+			LUAN_PCIX2_UPPER_MEM,
+			PCIX2_CFGA,
+			PCIX2_CFGD,
+			PCIX2_IO_BASE);
+
+	hose2->last_busno = pciauto_bus_scan(hose2, hose2->first_busno);
+
+	ppc_md.pci_swizzle = common_swizzle;
+	ppc_md.pci_map_irq = luan_map_irq;
+}
+
+TODC_ALLOC();
+
+static void __init
+luan_early_serial_map(void)
+{
+	struct uart_port port;
+
+	/* Setup ioremapped serial port access */
+	memset(&port, 0, sizeof(port));
+	port.membase = ioremap64(PPC440SP_UART0_ADDR, 8);
+	port.irq = UART0_INT;
+	port.uartclk = clocks.uart0;
+	port.regshift = 0;
+	port.iotype = SERIAL_IO_MEM;
+	port.flags = ASYNC_BOOT_AUTOCONF | ASYNC_SKIP_TEST;
+	port.line = 0;
+
+	if (early_serial_setup(&port) != 0) {
+		printk("Early serial init of port 0 failed\n");
+	}
+
+	port.membase = ioremap64(PPC440SP_UART1_ADDR, 8);
+	port.irq = UART1_INT;
+	port.uartclk = clocks.uart1;
+	port.line = 1;
+
+	if (early_serial_setup(&port) != 0) {
+		printk("Early serial init of port 1 failed\n");
+	}
+
+	port.membase = ioremap64(PPC440SP_UART2_ADDR, 8);
+	port.irq = UART2_INT;
+	port.uartclk = BASE_BAUD;
+	port.line = 2;
+
+	if (early_serial_setup(&port) != 0) {
+		printk("Early serial init of port 2 failed\n");
+	}
+}
+
+static void __init
+luan_setup_arch(void)
+{
+	luan_set_emacdata();
+
+#if !defined(CONFIG_BDI_SWITCH)
+	/*
+	 * The Abatron BDI JTAG debugger does not tolerate others
+	 * mucking with the debug registers.
+	 */
+        mtspr(SPRN_DBCR0, (DBCR0_TDE | DBCR0_IDM));
+#endif
+
+	/*
+	 * Determine various clocks.
+	 * To be completely correct we should get SysClk
+	 * from FPGA, because it can be changed by on-board switches
+	 * --ebs
+	 */
+	/* 440GX and 440SP clocking is the same -mdp */
+	ibm440gx_get_clocks(&clocks, 33333333, 6 * 1843200);
+	ocp_sys_info.opb_bus_freq = clocks.opb;
+
+	/* init to some ~sane value until calibrate_delay() runs */
+        loops_per_jiffy = 50000000/HZ;
+
+	/* Setup PCIXn host bridges */
+	luan_setup_hoses();
+
+#ifdef CONFIG_BLK_DEV_INITRD
+	if (initrd_start)
+		ROOT_DEV = Root_RAM0;
+	else
+#endif
+#ifdef CONFIG_ROOT_NFS
+		ROOT_DEV = Root_NFS;
+#else
+		ROOT_DEV = Root_HDA1;
+#endif
+
+	luan_early_serial_map();
+
+	/* Identify the system */
+	printk("Luan port (MontaVista Software, Inc. <source@mvista.com>)\n");
+}
+
+void __init platform_init(unsigned long r3, unsigned long r4,
+		unsigned long r5, unsigned long r6, unsigned long r7)
+{
+	parse_bootinfo(find_bootinfo());
+
+	/*
+	 * If we were passed in a board information, copy it into the
+	 * residual data area.
+	 */
+	if (r3)
+		__res = *(bd_t *)(r3 + KERNELBASE);
+
+	ibm44x_platform_init();
+
+	ppc_md.setup_arch = luan_setup_arch;
+	ppc_md.show_cpuinfo = luan_show_cpuinfo;
+	ppc_md.find_end_of_memory = ibm440sp_find_end_of_memory;
+	ppc_md.get_irq = NULL;		/* Set in ppc4xx_pic_init() */
+
+	ppc_md.calibrate_decr = luan_calibrate_decr;
+#ifdef CONFIG_KGDB
+	ppc_md.early_serial_map = luan_early_serial_map;
+#endif
+}