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!
diff --git a/arch/mips/pci/ops-tx4927.c b/arch/mips/pci/ops-tx4927.c
new file mode 100644
index 0000000..2a9d722
--- /dev/null
+++ b/arch/mips/pci/ops-tx4927.c
@@ -0,0 +1,209 @@
+/*
+ * Copyright 2001 MontaVista Software Inc.
+ * Author: MontaVista Software, Inc.
+ * ahennessy@mvista.com
+ *
+ * Copyright (C) 2000-2001 Toshiba Corporation
+ * Copyright (C) 2004 by Ralf Baechle (ralf@linux-mips.org)
+ *
+ * Based on arch/mips/ddb5xxx/ddb5477/pci_ops.c
+ *
+ * Define the pci_ops for the Toshiba rbtx4927
+ *
+ * Much of the code is derived from the original DDB5074 port by
+ * Geert Uytterhoeven <geert@sonycom.com>
+ *
+ * Copyright 2004 MontaVista Software Inc.
+ * Author: Manish Lachwani (mlachwani@mvista.com)
+ *
+ * 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.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
+ * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+ * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+#include <linux/types.h>
+#include <linux/pci.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+
+#include <asm/addrspace.h>
+#include <asm/byteorder.h>
+#include <asm/tx4927/tx4927_pci.h>
+
+/* initialize in setup */
+struct resource pci_io_resource = {
+ .name = "TX4927 PCI IO SPACE",
+ .start = 0x1000,
+ .end = (0x1000 + (TX4927_PCIIO_SIZE)) - 1,
+ .flags = IORESOURCE_IO
+};
+
+/* initialize in setup */
+struct resource pci_mem_resource = {
+ .name = "TX4927 PCI MEM SPACE",
+ .start = TX4927_PCIMEM,
+ .end = TX4927_PCIMEM + TX4927_PCIMEM_SIZE - 1,
+ .flags = IORESOURCE_MEM
+};
+
+static int mkaddr(int bus, int dev_fn, int where, int *flagsp)
+{
+ if (bus > 0) {
+ /* Type 1 configuration */
+ tx4927_pcicptr->g2pcfgadrs = ((bus & 0xff) << 0x10) |
+ ((dev_fn & 0xff) << 0x08) | (where & 0xfc) | 1;
+ } else {
+ if (dev_fn >= PCI_DEVFN(TX4927_PCIC_MAX_DEVNU, 0))
+ return -1;
+
+ /* Type 0 configuration */
+ tx4927_pcicptr->g2pcfgadrs = ((bus & 0xff) << 0x10) |
+ ((dev_fn & 0xff) << 0x08) | (where & 0xfc);
+ }
+ /* clear M_ABORT and Disable M_ABORT Int. */
+ tx4927_pcicptr->pcistatus =
+ (tx4927_pcicptr->pcistatus & 0x0000ffff) |
+ (PCI_STATUS_REC_MASTER_ABORT << 16);
+ tx4927_pcicptr->pcimask &= ~PCI_STATUS_REC_MASTER_ABORT;
+ return 0;
+}
+
+static int check_abort(int flags)
+{
+ int code = PCIBIOS_SUCCESSFUL;
+ if (tx4927_pcicptr->
+ pcistatus & (PCI_STATUS_REC_MASTER_ABORT << 16)) {
+ tx4927_pcicptr->pcistatus =
+ (tx4927_pcicptr->
+ pcistatus & 0x0000ffff) | (PCI_STATUS_REC_MASTER_ABORT
+ << 16);
+ tx4927_pcicptr->pcimask |= PCI_STATUS_REC_MASTER_ABORT;
+ code = PCIBIOS_DEVICE_NOT_FOUND;
+ }
+ return code;
+}
+
+static int tx4927_pcibios_read_config(struct pci_bus *bus, unsigned int devfn, int where,
+ int size, u32 * val)
+{
+ int flags, retval, dev, busno, func;
+
+ busno = bus->number;
+ dev = PCI_SLOT(devfn);
+ func = PCI_FUNC(devfn);
+
+ /* check if the bus is top-level */
+ if (bus->parent != NULL) {
+ busno = bus->number;
+ } else {
+ busno = 0;
+ }
+
+ if (mkaddr(busno, devfn, where, &flags))
+ return -1;
+
+ switch (size) {
+ case 1:
+ *val = *(volatile u8 *) ((ulong) & tx4927_pcicptr->
+ g2pcfgdata |
+#ifdef __LITTLE_ENDIAN
+ (where & 3));
+#else
+ ((where & 0x3) ^ 0x3));
+#endif
+ break;
+ case 2:
+ *val = *(volatile u16 *) ((ulong) & tx4927_pcicptr->
+ g2pcfgdata |
+#ifdef __LITTLE_ENDIAN
+ (where & 3));
+#else
+ ((where & 0x3) ^ 0x2));
+#endif
+ break;
+ case 4:
+ *val = tx4927_pcicptr->g2pcfgdata;
+ break;
+ }
+
+ retval = check_abort(flags);
+ if (retval == PCIBIOS_DEVICE_NOT_FOUND)
+ *val = 0xffffffff;
+
+ return retval;
+}
+
+static int tx4927_pcibios_write_config(struct pci_bus *bus, unsigned int devfn, int where,
+ int size, u32 val)
+{
+ int flags, dev, busno, func;
+ busno = bus->number;
+ dev = PCI_SLOT(devfn);
+ func = PCI_FUNC(devfn);
+
+ /* check if the bus is top-level */
+ if (bus->parent != NULL) {
+ busno = bus->number;
+ } else {
+ busno = 0;
+ }
+
+ if (mkaddr(busno, devfn, where, &flags))
+ return -1;
+
+ switch (size) {
+ case 1:
+ *(volatile u8 *) ((ulong) & tx4927_pcicptr->
+ g2pcfgdata |
+#ifdef __LITTLE_ENDIAN
+ (where & 3)) = val;
+#else
+ ((where & 0x3) ^ 0x3)) = val;
+#endif
+ break;
+
+ case 2:
+ *(volatile u16 *) ((ulong) & tx4927_pcicptr->
+ g2pcfgdata |
+#ifdef __LITTLE_ENDIAN
+ (where & 3)) = val;
+#else
+ ((where & 0x3) ^ 0x2)) = val;
+#endif
+ break;
+ case 4:
+ tx4927_pcicptr->g2pcfgdata = val;
+ break;
+ }
+
+ return check_abort(flags);
+}
+
+struct pci_ops tx4927_pci_ops = {
+ tx4927_pcibios_read_config,
+ tx4927_pcibios_write_config
+};
+
+/*
+ * h/w only supports devices 0x00 to 0x14
+ */
+struct pci_controller tx4927_controller = {
+ .pci_ops = &tx4927_pci_ops,
+ .io_resource = &pci_io_resource,
+ .mem_resource = &pci_mem_resource,
+};