Linux-2.6.12-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!

6 files changed, 403 insertions, 0 deletions

diff --git a/arch/sh/boards/harp/Makefile b/arch/sh/boards/harp/Makefile
new file mode 100644
index 000000000000..eb753d31812e
--- /dev/null
+++ b/arch/sh/boards/harp/Makefile
@@ -0,0 +1,8 @@
+#
+# Makefile for STMicroelectronics board specific parts of the kernel
+#
+
+obj-y := irq.o setup.o mach.o led.o
+
+obj-$(CONFIG_PCI) += pcidma.o
+
diff --git a/arch/sh/boards/harp/irq.c b/arch/sh/boards/harp/irq.c
new file mode 100644
index 000000000000..acd58489970f
--- /dev/null
+++ b/arch/sh/boards/harp/irq.c
@@ -0,0 +1,148 @@
+/* 
+ * Copyright (C) 2000 David J. Mckay (david.mckay@st.com)
+ *
+ * May be copied or modified under the terms of the GNU General Public
+ * License.  See linux/COPYING for more information.                            
+ *
+ * Looks after interrupts on the HARP board.
+ *
+ * Bases on the IPR irq system
+ */
+
+#include <linux/config.h>
+#include <linux/init.h>
+#include <linux/irq.h>
+
+#include <asm/system.h>
+#include <asm/io.h>
+#include <asm/harp/harp.h>
+
+
+#define NUM_EXTERNAL_IRQS 16
+
+// Early versions of the STB1 Overdrive required this nasty frig
+//#define INVERT_INTMASK_WRITES
+
+static void enable_harp_irq(unsigned int irq);
+static void disable_harp_irq(unsigned int irq);
+
+/* shutdown is same as "disable" */
+#define shutdown_harp_irq disable_harp_irq
+
+static void mask_and_ack_harp(unsigned int);
+static void end_harp_irq(unsigned int irq);
+
+static unsigned int startup_harp_irq(unsigned int irq)
+{
+	enable_harp_irq(irq);
+	return 0;		/* never anything pending */
+}
+
+static struct hw_interrupt_type harp_irq_type = {
+	"Harp-IRQ",
+	startup_harp_irq,
+	shutdown_harp_irq,
+	enable_harp_irq,
+	disable_harp_irq,
+	mask_and_ack_harp,
+	end_harp_irq
+};
+
+static void disable_harp_irq(unsigned int irq)
+{
+	unsigned val, flags;
+	unsigned maskReg;
+	unsigned mask;
+	int pri;
+
+	if (irq < 0 || irq >= NUM_EXTERNAL_IRQS)
+		return;
+
+	pri = 15 - irq;
+
+	if (pri < 8) {
+		maskReg = EPLD_INTMASK0;
+	} else {
+		maskReg = EPLD_INTMASK1;
+		pri -= 8;
+	}
+
+	local_irq_save(flags);
+	mask = ctrl_inl(maskReg);
+	mask &= (~(1 << pri));
+#if defined(INVERT_INTMASK_WRITES)
+	mask ^= 0xff;
+#endif
+	ctrl_outl(mask, maskReg);
+	local_irq_restore(flags);
+}
+
+static void enable_harp_irq(unsigned int irq)
+{
+	unsigned flags;
+	unsigned maskReg;
+	unsigned mask;
+	int pri;
+
+	if (irq < 0 || irq >= NUM_EXTERNAL_IRQS)
+		return;
+
+	pri = 15 - irq;
+
+	if (pri < 8) {
+		maskReg = EPLD_INTMASK0;
+	} else {
+		maskReg = EPLD_INTMASK1;
+		pri -= 8;
+	}
+
+	local_irq_save(flags);
+	mask = ctrl_inl(maskReg);
+
+
+	mask |= (1 << pri);
+
+#if defined(INVERT_INTMASK_WRITES)
+	mask ^= 0xff;
+#endif
+	ctrl_outl(mask, maskReg);
+
+	local_irq_restore(flags);
+}
+
+/* This functions sets the desired irq handler to be an overdrive type */
+static void __init make_harp_irq(unsigned int irq)
+{
+	disable_irq_nosync(irq);
+	irq_desc[irq].handler = &harp_irq_type;
+	disable_harp_irq(irq);
+}
+
+static void mask_and_ack_harp(unsigned int irq)
+{
+	disable_harp_irq(irq);
+}
+
+static void end_harp_irq(unsigned int irq)
+{
+	enable_harp_irq(irq);
+}
+
+void __init init_harp_irq(void)
+{
+	int i;
+
+#if !defined(INVERT_INTMASK_WRITES)
+	// On the harp these are set to enable an interrupt
+	ctrl_outl(0x00, EPLD_INTMASK0);
+	ctrl_outl(0x00, EPLD_INTMASK1);
+#else
+	// On the Overdrive the data is inverted before being stored in the reg
+	ctrl_outl(0xff, EPLD_INTMASK0);
+	ctrl_outl(0xff, EPLD_INTMASK1);
+#endif
+
+	for (i = 0; i < NUM_EXTERNAL_IRQS; i++) {
+		make_harp_irq(i);
+	}
+}
diff --git a/arch/sh/boards/harp/led.c b/arch/sh/boards/harp/led.c
new file mode 100644
index 000000000000..76ca4ccac703
--- /dev/null
+++ b/arch/sh/boards/harp/led.c
@@ -0,0 +1,52 @@
+/*
+ * linux/arch/sh/stboards/led.c
+ *
+ * Copyright (C) 2000 Stuart Menefy <stuart.menefy@st.com>
+ *
+ * May be copied or modified under the terms of the GNU General Public
+ * License.  See linux/COPYING for more information.
+ *
+ * This file contains ST40STB1 HARP and compatible code.
+ */
+
+#include <linux/config.h>
+#include <asm/io.h>
+#include <asm/harp/harp.h>
+
+/* Harp: Flash LD10 (front pannel) connected to EPLD (IC8) */
+/* Overdrive: Flash LD1 (front panel) connected to EPLD (IC4) */
+/* Works for HARP and overdrive */
+static void mach_led(int position, int value)
+{
+	if (value) {
+		ctrl_outl(EPLD_LED_ON, EPLD_LED);
+	} else {
+		ctrl_outl(EPLD_LED_OFF, EPLD_LED);
+	}
+}
+
+#ifdef CONFIG_HEARTBEAT
+
+#include <linux/sched.h>
+
+/* acts like an actual heart beat -- ie thump-thump-pause... */
+void heartbeat_harp(void)
+{
+	static unsigned cnt = 0, period = 0, dist = 0;
+
+	if (cnt == 0 || cnt == dist)
+		mach_led( -1, 1);
+	else if (cnt == 7 || cnt == dist+7)
+		mach_led( -1, 0);
+
+	if (++cnt > period) {
+		cnt = 0;
+		/* The hyperbolic function below modifies the heartbeat period
+		 * length in dependency of the current (5min) load. It goes
+		 * through the points f(0)=126, f(1)=86, f(5)=51,
+		 * f(inf)->30. */
+		period = ((672<<FSHIFT)/(5*avenrun[0]+(7<<FSHIFT))) + 30;
+		dist = period / 4;
+	}
+}
+#endif
diff --git a/arch/sh/boards/harp/mach.c b/arch/sh/boards/harp/mach.c
new file mode 100644
index 000000000000..a946dd1674ca
--- /dev/null
+++ b/arch/sh/boards/harp/mach.c
@@ -0,0 +1,62 @@
+/*
+ * linux/arch/sh/boards/harp/mach.c
+ *
+ * Copyright (C) 2000 Stuart Menefy (stuart.menefy@st.com)
+ *
+ * May be copied or modified under the terms of the GNU General Public
+ * License.  See linux/COPYING for more information.
+ *
+ * Machine vector for the STMicroelectronics STB1 HARP and compatible boards
+ */
+
+#include <linux/init.h>
+
+#include <asm/machvec.h>
+#include <asm/rtc.h>
+#include <asm/machvec_init.h>
+#include <asm/hd64465/io.h>
+#include <asm/hd64465/hd64465.h>
+
+void setup_harp(void);
+void init_harp_irq(void);
+void heartbeat_harp(void);
+
+/*
+ * The Machine Vector
+ */
+
+struct sh_machine_vector mv_harp __initmv = {
+	.mv_nr_irqs		= 89 + HD64465_IRQ_NUM,
+
+	.mv_inb			= hd64465_inb,
+	.mv_inw			= hd64465_inw,
+	.mv_inl			= hd64465_inl,
+	.mv_outb		= hd64465_outb,
+	.mv_outw		= hd64465_outw,
+	.mv_outl		= hd64465_outl,
+
+	.mv_inb_p		= hd64465_inb_p,
+	.mv_inw_p		= hd64465_inw,
+	.mv_inl_p		= hd64465_inl,
+	.mv_outb_p		= hd64465_outb_p,
+	.mv_outw_p		= hd64465_outw,
+	.mv_outl_p		= hd64465_outl,
+
+	.mv_insb		= hd64465_insb,
+	.mv_insw		= hd64465_insw,
+	.mv_insl		= hd64465_insl,
+	.mv_outsb		= hd64465_outsb,
+	.mv_outsw		= hd64465_outsw,
+	.mv_outsl		= hd64465_outsl,
+
+        .mv_isa_port2addr       = hd64465_isa_port2addr,
+
+#ifdef CONFIG_PCI
+	.mv_init_irq		= init_harp_irq,
+#endif
+#ifdef CONFIG_HEARTBEAT
+	.mv_heartbeat		= heartbeat_harp,
+#endif
+};
+
+ALIAS_MV(harp)
diff --git a/arch/sh/boards/harp/pcidma.c b/arch/sh/boards/harp/pcidma.c
new file mode 100644
index 000000000000..475311390fd6
--- /dev/null
+++ b/arch/sh/boards/harp/pcidma.c
@@ -0,0 +1,42 @@
+/* 
+ * Copyright (C) 2001 David J. Mckay (david.mckay@st.com)
+ *
+ * May be copied or modified under the terms of the GNU General Public
+ * License.  See linux/COPYING for more information.                            
+ *
+ * Dynamic DMA mapping support.
+ */
+
+#include <linux/types.h>
+#include <linux/mm.h>
+#include <linux/string.h>
+#include <linux/pci.h>
+#include <asm/io.h>
+#include <asm/addrspace.h>
+
+
+void *pci_alloc_consistent(struct pci_dev *hwdev, size_t size,
+			   dma_addr_t * dma_handle)
+{
+	void *ret;
+	int gfp = GFP_ATOMIC;
+
+	ret = (void *) __get_free_pages(gfp, get_order(size));
+
+	if (ret != NULL) {
+	        /* Is it neccessary to do the memset? */
+		memset(ret, 0, size);
+		*dma_handle = virt_to_bus(ret);
+	}
+	/* We must flush the cache before we pass it on to the device */
+	flush_cache_all();
+	return  P2SEGADDR(ret);
+}
+
+void pci_free_consistent(struct pci_dev *hwdev, size_t size,
+			 void *vaddr, dma_addr_t dma_handle)
+{
+        unsigned long p1addr=P1SEGADDR((unsigned long)vaddr);
+
+	free_pages(p1addr, get_order(size));
+}
diff --git a/arch/sh/boards/harp/setup.c b/arch/sh/boards/harp/setup.c
new file mode 100644
index 000000000000..05b01b8f40aa
--- /dev/null
+++ b/arch/sh/boards/harp/setup.c
@@ -0,0 +1,91 @@
+/*
+ * arch/sh/stboard/setup.c
+ *
+ * Copyright (C) 2001 Stuart Menefy (stuart.menefy@st.com)
+ *
+ * May be copied or modified under the terms of the GNU General Public
+ * License.  See linux/COPYING for more information.
+ *
+ * STMicroelectronics ST40STB1 HARP and compatible support.
+ */
+
+#include <linux/config.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <asm/io.h>
+#include <asm/harp/harp.h>
+
+const char *get_system_type(void)
+{
+	return "STB1 Harp";
+}
+
+/*
+ * Initialize the board
+ */
+int __init platform_setup(void)
+{
+#ifdef CONFIG_SH_STB1_HARP
+	unsigned long ic8_version, ic36_version;
+
+	ic8_version = ctrl_inl(EPLD_REVID2);
+	ic36_version = ctrl_inl(EPLD_REVID1);
+
+        printk("STMicroelectronics STB1 HARP initialisaton\n");
+        printk("EPLD versions: IC8: %d.%02d, IC36: %d.%02d\n",
+               (ic8_version >> 4) & 0xf, ic8_version & 0xf,
+               (ic36_version >> 4) & 0xf, ic36_version & 0xf);
+#elif defined(CONFIG_SH_STB1_OVERDRIVE)
+	unsigned long version;
+
+	version = ctrl_inl(EPLD_REVID);
+
+        printk("STMicroelectronics STB1 Overdrive initialisaton\n");
+        printk("EPLD version: %d.%02d\n",
+	       (version >> 4) & 0xf, version & 0xf);
+#else
+#error Undefined machine
+#endif
+ 
+        /* Currently all STB1 chips have problems with the sleep instruction,
+         * so disable it here.
+         */
+	disable_hlt();
+
+	return 0;
+}
+
+/*
+ * pcibios_map_platform_irq
+ *
+ * This is board specific and returns the IRQ for a given PCI device.
+ * It is used by the PCI code (arch/sh/kernel/st40_pci*)
+ *
+ */
+
+#define HARP_PCI_IRQ    1
+#define HARP_BRIDGE_IRQ 2
+#define OVERDRIVE_SLOT0_IRQ 0
+
+
+int __init pcibios_map_platform_irq(struct pci_dev *dev, u8 slot, u8 pin)
+{
+	switch (slot) {
+#ifdef CONFIG_SH_STB1_HARP
+	case 2:		/*This is the PCI slot on the */
+		return HARP_PCI_IRQ;
+	case 1:		/* this is the bridge */
+		return HARP_BRIDGE_IRQ;
+#elif defined(CONFIG_SH_STB1_OVERDRIVE)
+	case 1:
+	case 2:
+	case 3:
+		return slot - 1;
+#else
+#error Unknown board
+#endif
+	default:
+		return -1;
+	}
+}
+