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, 193 insertions, 0 deletions

diff --git a/drivers/zorro/zorro.c b/drivers/zorro/zorro.c
new file mode 100644
index 00000000000..d3c05dfe20d
--- /dev/null
+++ b/drivers/zorro/zorro.c
@@ -0,0 +1,193 @@
+/*
+ *    $Id: zorro.c,v 1.1.2.1 1998/06/07 23:21:02 geert Exp $
+ *
+ *    Zorro Bus Services
+ *
+ *    Copyright (C) 1995-2003 Geert Uytterhoeven
+ *
+ *    This file is subject to the terms and conditions of the GNU General Public
+ *    License.  See the file COPYING in the main directory of this archive
+ *    for more details.
+ */
+
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/zorro.h>
+#include <linux/bitops.h>
+#include <asm/setup.h>
+#include <asm/amigahw.h>
+
+#include "zorro.h"
+
+
+    /*
+     *  Zorro Expansion Devices
+     */
+
+u_int zorro_num_autocon = 0;
+struct zorro_dev zorro_autocon[ZORRO_NUM_AUTO];
+
+
+    /*
+     *  Single Zorro bus
+     */
+
+struct zorro_bus zorro_bus = {\
+    .resources = {
+	/* Zorro II regions (on Zorro II/III) */
+	{ .name = "Zorro II exp", .start = 0x00e80000, .end = 0x00efffff },
+	{ .name = "Zorro II mem", .start = 0x00200000, .end = 0x009fffff },
+	/* Zorro III regions (on Zorro III only) */
+	{ .name = "Zorro III exp", .start = 0xff000000, .end = 0xffffffff },
+	{ .name = "Zorro III cfg", .start = 0x40000000, .end = 0x7fffffff }
+    },
+    .name = "Zorro bus"
+};
+
+
+    /*
+     *  Find Zorro Devices
+     */
+
+struct zorro_dev *zorro_find_device(zorro_id id, struct zorro_dev *from)
+{
+    struct zorro_dev *z;
+
+    if (!MACH_IS_AMIGA || !AMIGAHW_PRESENT(ZORRO))
+	return NULL;
+
+    for (z = from ? from+1 : &zorro_autocon[0];
+	 z < zorro_autocon+zorro_num_autocon;
+	 z++)
+	if (id == ZORRO_WILDCARD || id == z->id)
+	    return z;
+    return NULL;
+}
+
+
+    /*
+     *  Bitmask indicating portions of available Zorro II RAM that are unused
+     *  by the system. Every bit represents a 64K chunk, for a maximum of 8MB
+     *  (128 chunks, physical 0x00200000-0x009fffff).
+     *
+     *  If you want to use (= allocate) portions of this RAM, you should clear
+     *  the corresponding bits.
+     *
+     *  Possible uses:
+     *      - z2ram device
+     *      - SCSI DMA bounce buffers
+     *
+     *  FIXME: use the normal resource management
+     */
+
+DECLARE_BITMAP(zorro_unused_z2ram, 128);
+
+
+static void __init mark_region(unsigned long start, unsigned long end,
+			       int flag)
+{
+    if (flag)
+	start += Z2RAM_CHUNKMASK;
+    else
+	end += Z2RAM_CHUNKMASK;
+    start &= ~Z2RAM_CHUNKMASK;
+    end &= ~Z2RAM_CHUNKMASK;
+
+    if (end <= Z2RAM_START || start >= Z2RAM_END)
+	return;
+    start = start < Z2RAM_START ? 0x00000000 : start-Z2RAM_START;
+    end = end > Z2RAM_END ? Z2RAM_SIZE : end-Z2RAM_START;
+    while (start < end) {
+	u32 chunk = start>>Z2RAM_CHUNKSHIFT;
+	if (flag)
+	    set_bit(chunk, zorro_unused_z2ram);
+	else
+	    clear_bit(chunk, zorro_unused_z2ram);
+	start += Z2RAM_CHUNKSIZE;
+    }
+}
+
+
+static struct resource __init *zorro_find_parent_resource(struct zorro_dev *z)
+{
+    int i;
+
+    for (i = 0; i < zorro_bus.num_resources; i++)
+	if (zorro_resource_start(z) >= zorro_bus.resources[i].start &&
+	    zorro_resource_end(z) <= zorro_bus.resources[i].end)
+		return &zorro_bus.resources[i];
+    return &iomem_resource;
+}
+
+
+    /*
+     *  Initialization
+     */
+
+static int __init zorro_init(void)
+{
+    struct zorro_dev *z;
+    unsigned int i;
+
+    if (!MACH_IS_AMIGA || !AMIGAHW_PRESENT(ZORRO))
+	return 0;
+
+    pr_info("Zorro: Probing AutoConfig expansion devices: %d device%s\n",
+	   zorro_num_autocon, zorro_num_autocon == 1 ? "" : "s");
+
+    /* Initialize the Zorro bus */
+    INIT_LIST_HEAD(&zorro_bus.devices);
+    strcpy(zorro_bus.dev.bus_id, "zorro");
+    device_register(&zorro_bus.dev);
+
+    /* Request the resources */
+    zorro_bus.num_resources = AMIGAHW_PRESENT(ZORRO3) ? 4 : 2;
+    for (i = 0; i < zorro_bus.num_resources; i++)
+	request_resource(&iomem_resource, &zorro_bus.resources[i]);
+
+    /* Register all devices */
+    for (i = 0; i < zorro_num_autocon; i++) {
+	z = &zorro_autocon[i];
+	z->id = (z->rom.er_Manufacturer<<16) | (z->rom.er_Product<<8);
+	if (z->id == ZORRO_PROD_GVP_EPC_BASE) {
+	    /* GVP quirk */
+	    unsigned long magic = zorro_resource_start(z)+0x8000;
+	    z->id |= *(u16 *)ZTWO_VADDR(magic) & GVP_PRODMASK;
+	}
+	sprintf(z->name, "Zorro device %08x", z->id);
+	zorro_name_device(z);
+	z->resource.name = z->name;
+	if (request_resource(zorro_find_parent_resource(z), &z->resource))
+	    printk(KERN_ERR "Zorro: Address space collision on device %s "
+		   "[%lx:%lx]\n",
+		   z->name, zorro_resource_start(z), zorro_resource_end(z));
+	sprintf(z->dev.bus_id, "%02x", i);
+	z->dev.parent = &zorro_bus.dev;
+	z->dev.bus = &zorro_bus_type;
+	device_register(&z->dev);
+	zorro_create_sysfs_dev_files(z);
+    }
+
+    /* Mark all available Zorro II memory */
+    zorro_for_each_dev(z) {
+	if (z->rom.er_Type & ERTF_MEMLIST)
+	    mark_region(zorro_resource_start(z), zorro_resource_end(z)+1, 1);
+    }
+
+    /* Unmark all used Zorro II memory */
+    for (i = 0; i < m68k_num_memory; i++)
+	if (m68k_memory[i].addr < 16*1024*1024)
+	    mark_region(m68k_memory[i].addr,
+			m68k_memory[i].addr+m68k_memory[i].size, 0);
+
+    return 0;
+}
+
+subsys_initcall(zorro_init);
+
+EXPORT_SYMBOL(zorro_find_device);
+EXPORT_SYMBOL(zorro_unused_z2ram);
+
+MODULE_LICENSE("GPL");