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, 491 insertions, 0 deletions

diff --git a/arch/ppc/platforms/cpci690.c b/arch/ppc/platforms/cpci690.c
new file mode 100644
index 000000000000..507870c9a97a
--- /dev/null
+++ b/arch/ppc/platforms/cpci690.c
@@ -0,0 +1,491 @@
+/*
+ * arch/ppc/platforms/cpci690.c
+ *
+ * Board setup routines for the Force CPCI690 board.
+ *
+ * Author: Mark A. Greer <mgreer@mvista.com>
+ *
+ * 2003 (c) MontaVista Software, Inc.  This file is licensed under
+ * the terms of the GNU General Public License version 2.  This programr
+ * is licensed "as is" without any warranty of any kind, whether express
+ * or implied.
+ */
+#include <linux/config.h>
+#include <linux/delay.h>
+#include <linux/pci.h>
+#include <linux/ide.h>
+#include <linux/irq.h>
+#include <linux/fs.h>
+#include <linux/seq_file.h>
+#include <linux/console.h>
+#include <linux/initrd.h>
+#include <linux/root_dev.h>
+#include <linux/mv643xx.h>
+#include <asm/bootinfo.h>
+#include <asm/machdep.h>
+#include <asm/todc.h>
+#include <asm/time.h>
+#include <asm/mv64x60.h>
+#include <platforms/cpci690.h>
+
+#define BOARD_VENDOR	"Force"
+#define BOARD_MACHINE	"CPCI690"
+
+/* Set IDE controllers into Native mode? */
+#define SET_PCI_IDE_NATIVE
+
+static struct mv64x60_handle	bh;
+static u32 cpci690_br_base;
+
+static const unsigned int cpu_7xx[16] = { /* 7xx & 74xx (but not 745x) */
+	18, 15, 14, 2, 4, 13, 5, 9, 6, 11, 8, 10, 16, 12, 7, 0
+};
+
+TODC_ALLOC();
+
+static int __init
+cpci690_map_irq(struct pci_dev *dev, unsigned char idsel, unsigned char pin)
+{
+	struct pci_controller	*hose = pci_bus_to_hose(dev->bus->number);
+
+	if (hose->index == 0) {
+		static char pci_irq_table[][4] =
+		/*
+		 *	PCI IDSEL/INTPIN->INTLINE
+		 * 	   A   B   C   D
+		 */
+		{
+			{ 90, 91, 88, 89}, /* IDSEL 30/20 - Sentinel */
+		};
+
+		const long min_idsel = 20, max_idsel = 20, irqs_per_slot = 4;
+		return PCI_IRQ_TABLE_LOOKUP;
+	} else {
+		static char pci_irq_table[][4] =
+		/*
+		 *	PCI IDSEL/INTPIN->INTLINE
+		 * 	   A   B   C   D
+		 */
+		{
+			{ 93, 94, 95, 92}, /* IDSEL 28/18 - PMC slot 2 */
+			{  0,  0,  0,  0}, /* IDSEL 29/19 - Not used */
+			{ 94, 95, 92, 93}, /* IDSEL 30/20 - PMC slot 1 */
+		};
+
+		const long min_idsel = 18, max_idsel = 20, irqs_per_slot = 4;
+		return PCI_IRQ_TABLE_LOOKUP;
+	}
+}
+
+static int
+cpci690_get_cpu_speed(void)
+{
+	unsigned long	hid1;
+
+	hid1 = mfspr(SPRN_HID1) >> 28;
+	return CPCI690_BUS_FREQ * cpu_7xx[hid1]/2;
+}
+
+#define	KB	(1024UL)
+#define	MB	(1024UL * KB)
+#define	GB	(1024UL * MB)
+
+unsigned long __init
+cpci690_find_end_of_memory(void)
+{
+	u32		mem_ctlr_size;
+	static u32	board_size;
+	static u8	first_time = 1;
+
+	if (first_time) {
+		/* Using cpci690_set_bat() mapping ==> virt addr == phys addr */
+		switch (in_8((u8 *) (cpci690_br_base +
+			CPCI690_BR_MEM_CTLR)) & 0x07) {
+		case 0x01:
+			board_size = 256*MB;
+			break;
+		case 0x02:
+			board_size = 512*MB;
+			break;
+		case 0x03:
+			board_size = 768*MB;
+			break;
+		case 0x04:
+			board_size = 1*GB;
+			break;
+		case 0x05:
+			board_size = 1*GB + 512*MB;
+			break;
+		case 0x06:
+			board_size = 2*GB;
+			break;
+		default:
+			board_size = 0xffffffff; /* use mem ctlr size */
+		} /* switch */
+
+		mem_ctlr_size =  mv64x60_get_mem_size(CONFIG_MV64X60_NEW_BASE,
+			MV64x60_TYPE_GT64260A);
+
+		/* Check that mem ctlr & board reg agree.  If not, pick MIN. */
+		if (board_size != mem_ctlr_size) {
+			printk(KERN_WARNING "Board register & memory controller"
+				"mem size disagree (board reg: 0x%lx, "
+				"mem ctlr: 0x%lx)\n",
+				(ulong)board_size, (ulong)mem_ctlr_size);
+			board_size = min(board_size, mem_ctlr_size);
+		}
+
+		first_time = 0;
+	} /* if */
+
+	return board_size;
+}
+
+static void __init
+cpci690_setup_bridge(void)
+{
+	struct mv64x60_setup_info	si;
+	int				i;
+
+	memset(&si, 0, sizeof(si));
+
+	si.phys_reg_base = CONFIG_MV64X60_NEW_BASE;
+
+	si.pci_0.enable_bus = 1;
+	si.pci_0.pci_io.cpu_base = CPCI690_PCI0_IO_START_PROC_ADDR;
+	si.pci_0.pci_io.pci_base_hi = 0;
+	si.pci_0.pci_io.pci_base_lo = CPCI690_PCI0_IO_START_PCI_ADDR;
+	si.pci_0.pci_io.size = CPCI690_PCI0_IO_SIZE;
+	si.pci_0.pci_io.swap = MV64x60_CPU2PCI_SWAP_NONE;
+	si.pci_0.pci_mem[0].cpu_base = CPCI690_PCI0_MEM_START_PROC_ADDR;
+	si.pci_0.pci_mem[0].pci_base_hi = CPCI690_PCI0_MEM_START_PCI_HI_ADDR;
+	si.pci_0.pci_mem[0].pci_base_lo = CPCI690_PCI0_MEM_START_PCI_LO_ADDR;
+	si.pci_0.pci_mem[0].size = CPCI690_PCI0_MEM_SIZE;
+	si.pci_0.pci_mem[0].swap = MV64x60_CPU2PCI_SWAP_NONE;
+	si.pci_0.pci_cmd_bits = 0;
+	si.pci_0.latency_timer = 0x80;
+
+	si.pci_1.enable_bus = 1;
+	si.pci_1.pci_io.cpu_base = CPCI690_PCI1_IO_START_PROC_ADDR;
+	si.pci_1.pci_io.pci_base_hi = 0;
+	si.pci_1.pci_io.pci_base_lo = CPCI690_PCI1_IO_START_PCI_ADDR;
+	si.pci_1.pci_io.size = CPCI690_PCI1_IO_SIZE;
+	si.pci_1.pci_io.swap = MV64x60_CPU2PCI_SWAP_NONE;
+	si.pci_1.pci_mem[0].cpu_base = CPCI690_PCI1_MEM_START_PROC_ADDR;
+	si.pci_1.pci_mem[0].pci_base_hi = CPCI690_PCI1_MEM_START_PCI_HI_ADDR;
+	si.pci_1.pci_mem[0].pci_base_lo = CPCI690_PCI1_MEM_START_PCI_LO_ADDR;
+	si.pci_1.pci_mem[0].size = CPCI690_PCI1_MEM_SIZE;
+	si.pci_1.pci_mem[0].swap = MV64x60_CPU2PCI_SWAP_NONE;
+	si.pci_1.pci_cmd_bits = 0;
+	si.pci_1.latency_timer = 0x80;
+
+	for (i=0; i<MV64x60_CPU2MEM_WINDOWS; i++) {
+		si.cpu_prot_options[i] = 0;
+		si.cpu_snoop_options[i] = GT64260_CPU_SNOOP_WB;
+		si.pci_0.acc_cntl_options[i] =
+			GT64260_PCI_ACC_CNTL_DREADEN |
+			GT64260_PCI_ACC_CNTL_RDPREFETCH |
+			GT64260_PCI_ACC_CNTL_RDLINEPREFETCH |
+			GT64260_PCI_ACC_CNTL_RDMULPREFETCH |
+			GT64260_PCI_ACC_CNTL_SWAP_NONE |
+			GT64260_PCI_ACC_CNTL_MBURST_32_BTYES;
+		si.pci_0.snoop_options[i] = GT64260_PCI_SNOOP_WB;
+		si.pci_1.acc_cntl_options[i] =
+			GT64260_PCI_ACC_CNTL_DREADEN |
+			GT64260_PCI_ACC_CNTL_RDPREFETCH |
+			GT64260_PCI_ACC_CNTL_RDLINEPREFETCH |
+			GT64260_PCI_ACC_CNTL_RDMULPREFETCH |
+			GT64260_PCI_ACC_CNTL_SWAP_NONE |
+			GT64260_PCI_ACC_CNTL_MBURST_32_BTYES;
+		si.pci_1.snoop_options[i] = GT64260_PCI_SNOOP_WB;
+	}
+
+        /* Lookup PCI host bridges */
+        if (mv64x60_init(&bh, &si))
+                printk(KERN_ERR "Bridge initialization failed.\n");
+
+	pci_dram_offset = 0; /* System mem at same addr on PCI & cpu bus */
+	ppc_md.pci_swizzle = common_swizzle;
+	ppc_md.pci_map_irq = cpci690_map_irq;
+	ppc_md.pci_exclude_device = mv64x60_pci_exclude_device;
+
+	mv64x60_set_bus(&bh, 0, 0);
+	bh.hose_a->first_busno = 0;
+	bh.hose_a->last_busno = 0xff;
+	bh.hose_a->last_busno = pciauto_bus_scan(bh.hose_a, 0);
+
+	bh.hose_b->first_busno = bh.hose_a->last_busno + 1;
+	mv64x60_set_bus(&bh, 1, bh.hose_b->first_busno);
+	bh.hose_b->last_busno = 0xff;
+	bh.hose_b->last_busno = pciauto_bus_scan(bh.hose_b,
+		bh.hose_b->first_busno);
+}
+
+static void __init
+cpci690_setup_peripherals(void)
+{
+	/* Set up windows to CPLD, RTC/TODC, IPMI. */
+	mv64x60_set_32bit_window(&bh, MV64x60_CPU2DEV_0_WIN, CPCI690_BR_BASE,
+		CPCI690_BR_SIZE, 0);
+	bh.ci->enable_window_32bit(&bh, MV64x60_CPU2DEV_0_WIN);
+	cpci690_br_base = (u32)ioremap(CPCI690_BR_BASE, CPCI690_BR_SIZE);
+
+	mv64x60_set_32bit_window(&bh, MV64x60_CPU2DEV_1_WIN, CPCI690_TODC_BASE,
+		CPCI690_TODC_SIZE, 0);
+	bh.ci->enable_window_32bit(&bh, MV64x60_CPU2DEV_1_WIN);
+	TODC_INIT(TODC_TYPE_MK48T35, 0, 0,
+			ioremap(CPCI690_TODC_BASE, CPCI690_TODC_SIZE), 8);
+
+	mv64x60_set_32bit_window(&bh, MV64x60_CPU2DEV_2_WIN, CPCI690_IPMI_BASE,
+		CPCI690_IPMI_SIZE, 0);
+	bh.ci->enable_window_32bit(&bh, MV64x60_CPU2DEV_2_WIN);
+
+	mv64x60_set_bits(&bh, MV64x60_PCI0_ARBITER_CNTL, (1<<31));
+	mv64x60_set_bits(&bh, MV64x60_PCI1_ARBITER_CNTL, (1<<31));
+
+        mv64x60_set_bits(&bh, MV64x60_CPU_MASTER_CNTL, (1<<9)); /* Only 1 cpu */
+
+	/*
+	 * Turn off timer/counters.  Not turning off watchdog timer because
+	 * can't read its reg on the 64260A so don't know if we'll be enabling
+	 * or disabling.
+	 */
+	mv64x60_clr_bits(&bh, MV64x60_TIMR_CNTR_0_3_CNTL,
+			((1<<0) | (1<<8) | (1<<16) | (1<<24)));
+	mv64x60_clr_bits(&bh, GT64260_TIMR_CNTR_4_7_CNTL,
+			((1<<0) | (1<<8) | (1<<16) | (1<<24)));
+
+	/*
+	 * Set MPSC Multiplex RMII
+	 * NOTE: ethernet driver modifies bit 0 and 1
+	 */
+	mv64x60_write(&bh, GT64260_MPP_SERIAL_PORTS_MULTIPLEX, 0x00001102);
+
+#define GPP_EXTERNAL_INTERRUPTS \
+		((1<<24) | (1<<25) | (1<<26) | (1<<27) | \
+		 (1<<28) | (1<<29) | (1<<30) | (1<<31))
+	/* PCI interrupts are inputs */
+	mv64x60_clr_bits(&bh, MV64x60_GPP_IO_CNTL, GPP_EXTERNAL_INTERRUPTS);
+	/* PCI interrupts are active low */
+	mv64x60_set_bits(&bh, MV64x60_GPP_LEVEL_CNTL, GPP_EXTERNAL_INTERRUPTS);
+
+	/* Clear any pending interrupts for these inputs and enable them. */
+	mv64x60_write(&bh, MV64x60_GPP_INTR_CAUSE, ~GPP_EXTERNAL_INTERRUPTS);
+	mv64x60_set_bits(&bh, MV64x60_GPP_INTR_MASK, GPP_EXTERNAL_INTERRUPTS);
+
+	/* Route MPP interrupt inputs to GPP */
+	mv64x60_write(&bh, MV64x60_MPP_CNTL_2, 0x00000000);
+	mv64x60_write(&bh, MV64x60_MPP_CNTL_3, 0x00000000);
+}
+
+static void __init
+cpci690_setup_arch(void)
+{
+	if (ppc_md.progress)
+		ppc_md.progress("cpci690_setup_arch: enter", 0);
+#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_SDA2;
+#endif
+
+	if (ppc_md.progress)
+		ppc_md.progress("cpci690_setup_arch: Enabling L2 cache", 0);
+
+	/* Enable L2 and L3 caches (if 745x) */
+	_set_L2CR(_get_L2CR() | L2CR_L2E);
+	_set_L3CR(_get_L3CR() | L3CR_L3E);
+
+	if (ppc_md.progress)
+		ppc_md.progress("cpci690_setup_arch: Initializing bridge", 0);
+
+	cpci690_setup_bridge();		/* set up PCI bridge(s) */
+	cpci690_setup_peripherals();	/* set up chip selects/GPP/MPP etc */
+
+	if (ppc_md.progress)
+		ppc_md.progress("cpci690_setup_arch: bridge init complete", 0);
+
+	printk(KERN_INFO "%s %s port (C) 2003 MontaVista Software, Inc. "
+		"(source@mvista.com)\n", BOARD_VENDOR, BOARD_MACHINE);
+
+	if (ppc_md.progress)
+		ppc_md.progress("cpci690_setup_arch: exit", 0);
+}
+
+/* Platform device data fixup routines. */
+#if defined(CONFIG_SERIAL_MPSC)
+static void __init
+cpci690_fixup_mpsc_pdata(struct platform_device *pdev)
+{
+	struct mpsc_pdata *pdata;
+
+	pdata = (struct mpsc_pdata *)pdev->dev.platform_data;
+
+	pdata->max_idle = 40;
+	pdata->default_baud = CPCI690_MPSC_BAUD;
+	pdata->brg_clk_src = CPCI690_MPSC_CLK_SRC;
+	pdata->brg_clk_freq = CPCI690_BUS_FREQ;
+}
+
+static int __init
+cpci690_platform_notify(struct device *dev)
+{
+	static struct {
+		char	*bus_id;
+		void	((*rtn)(struct platform_device *pdev));
+	} dev_map[] = {
+		{ MPSC_CTLR_NAME ".0", cpci690_fixup_mpsc_pdata },
+		{ MPSC_CTLR_NAME ".1", cpci690_fixup_mpsc_pdata },
+	};
+	struct platform_device	*pdev;
+	int	i;
+
+	if (dev && dev->bus_id)
+		for (i=0; i<ARRAY_SIZE(dev_map); i++)
+			if (!strncmp(dev->bus_id, dev_map[i].bus_id,
+				BUS_ID_SIZE)) {
+
+				pdev = container_of(dev,
+					struct platform_device, dev);
+				dev_map[i].rtn(pdev);
+			}
+
+	return 0;
+}
+#endif
+
+static void
+cpci690_reset_board(void)
+{
+	u32	i = 10000;
+
+	local_irq_disable();
+	out_8((u8 *)(cpci690_br_base + CPCI690_BR_SW_RESET), 0x11);
+
+	while (i != 0) i++;
+	panic("restart failed\n");
+}
+
+static void
+cpci690_restart(char *cmd)
+{
+	cpci690_reset_board();
+}
+
+static void
+cpci690_halt(void)
+{
+	while (1);
+	/* NOTREACHED */
+}
+
+static void
+cpci690_power_off(void)
+{
+	cpci690_halt();
+	/* NOTREACHED */
+}
+
+static int
+cpci690_show_cpuinfo(struct seq_file *m)
+{
+	seq_printf(m, "vendor\t\t: " BOARD_VENDOR "\n");
+	seq_printf(m, "machine\t\t: " BOARD_MACHINE "\n");
+	seq_printf(m, "cpu MHz\t\t: %d\n", cpci690_get_cpu_speed()/1000/1000);
+	seq_printf(m, "bus MHz\t\t: %d\n", CPCI690_BUS_FREQ/1000/1000);
+
+	return 0;
+}
+
+static void __init
+cpci690_calibrate_decr(void)
+{
+	ulong freq;
+
+	freq = CPCI690_BUS_FREQ / 4;
+
+	printk(KERN_INFO "time_init: decrementer frequency = %lu.%.6lu MHz\n",
+	       freq/1000000, freq%1000000);
+
+	tb_ticks_per_jiffy = freq / HZ;
+	tb_to_us = mulhwu_scale_factor(freq, 1000000);
+}
+
+static __inline__ void
+cpci690_set_bat(u32 addr, u32 size)
+{
+	addr &= 0xfffe0000;
+	size &= 0x1ffe0000;
+	size = ((size >> 17) - 1) << 2;
+
+	mb();
+	mtspr(SPRN_DBAT1U, addr | size | 0x2); /* Vs == 1; Vp == 0 */
+	mtspr(SPRN_DBAT1L, addr | 0x2a); /* WIMG bits == 0101; PP == r/w access */
+	mb();
+}
+
+#if defined(CONFIG_SERIAL_TEXT_DEBUG) || defined(CONFIG_KGDB)
+static void __init
+cpci690_map_io(void)
+{
+	io_block_mapping(CONFIG_MV64X60_NEW_BASE, CONFIG_MV64X60_NEW_BASE,
+		128 * KB, _PAGE_IO);
+}
+#endif
+
+void __init
+platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
+	      unsigned long r6, unsigned long r7)
+{
+#ifdef CONFIG_BLK_DEV_INITRD
+	initrd_start=initrd_end=0;
+	initrd_below_start_ok=0;
+#endif /* CONFIG_BLK_DEV_INITRD */
+
+	parse_bootinfo(find_bootinfo());
+
+	loops_per_jiffy = cpci690_get_cpu_speed() / HZ;
+
+	isa_mem_base = 0;
+
+	ppc_md.setup_arch = cpci690_setup_arch;
+	ppc_md.show_cpuinfo = cpci690_show_cpuinfo;
+	ppc_md.init_IRQ = gt64260_init_irq;
+	ppc_md.get_irq = gt64260_get_irq;
+	ppc_md.restart = cpci690_restart;
+	ppc_md.power_off = cpci690_power_off;
+	ppc_md.halt = cpci690_halt;
+	ppc_md.find_end_of_memory = cpci690_find_end_of_memory;
+	ppc_md.time_init = todc_time_init;
+	ppc_md.set_rtc_time = todc_set_rtc_time;
+	ppc_md.get_rtc_time = todc_get_rtc_time;
+	ppc_md.nvram_read_val = todc_direct_read_val;
+	ppc_md.nvram_write_val = todc_direct_write_val;
+	ppc_md.calibrate_decr = cpci690_calibrate_decr;
+
+	/*
+	 * Need to map in board regs (used by cpci690_find_end_of_memory())
+	 * and the bridge's regs (used by progress);
+	 */
+	cpci690_set_bat(CPCI690_BR_BASE, 32 * MB);
+	cpci690_br_base = CPCI690_BR_BASE;
+
+#ifdef	CONFIG_SERIAL_TEXT_DEBUG
+	ppc_md.setup_io_mappings = cpci690_map_io;
+	ppc_md.progress = mv64x60_mpsc_progress;
+	mv64x60_progress_init(CONFIG_MV64X60_NEW_BASE);
+#endif	/* CONFIG_SERIAL_TEXT_DEBUG */
+#ifdef	CONFIG_KGDB
+	ppc_md.setup_io_mappings = cpci690_map_io;
+	ppc_md.early_serial_map = cpci690_early_serial_map;
+#endif	/* CONFIG_KGDB */
+
+#if defined(CONFIG_SERIAL_MPSC)
+	platform_notify = cpci690_platform_notify;
+#endif
+}