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-titan-ht.c b/arch/mips/pci/ops-titan-ht.c
new file mode 100644
index 0000000..46c636c
--- /dev/null
+++ b/arch/mips/pci/ops-titan-ht.c
@@ -0,0 +1,125 @@
+/*
+ * Copyright 2003 PMC-Sierra
+ * Author: Manish Lachwani (lachwani@pmc-sierra.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/slab.h>
+#include <linux/delay.h>
+#include <asm/io.h>
+
+#include <asm/titan_dep.h>
+
+static int titan_ht_config_read_dword(struct pci_bus *bus, unsigned int devfn,
+ int offset, u32 * val)
+{
+ volatile uint32_t address;
+ int busno;
+
+ busno = bus->number;
+
+ address = (busno << 16) | (devfn << 8) | (offset & 0xfc) | 0x80000000;
+ if (busno != 0)
+ address |= 1;
+
+ /*
+ * RM9000 HT Errata: Issue back to back HT config
+ * transcations. Issue a BIU sync before and
+ * after the HT cycle
+ */
+
+ *(volatile int32_t *) 0xfb0000f0 |= 0x2;
+
+ udelay(30);
+
+ *(volatile int32_t *) 0xfb0006f8 = address;
+ *(val) = *(volatile int32_t *) 0xfb0006fc;
+
+ udelay(30);
+
+ * (volatile int32_t *) 0xfb0000f0 |= 0x2;
+
+ return PCIBIOS_SUCCESSFUL;
+}
+
+static int titan_ht_config_read(struct pci_bus *bus, unsigned int devfn,
+ int offset, int size, u32 * val)
+{
+ uint32_t dword;
+
+ titan_ht_config_read_dword(bus, devfn, offset, &dword);
+
+ dword >>= ((offset & 3) << 3);
+ dword &= (0xffffffffU >> ((4 - size) << 8));
+
+ return PCIBIOS_SUCCESSFUL;
+}
+
+static inline int titan_ht_config_write_dword(struct pci_bus *bus,
+ unsigned int devfn, int offset, u32 val)
+{
+ volatile uint32_t address;
+ int busno;
+
+ busno = bus->number;
+
+ address = (busno << 16) | (devfn << 8) | (offset & 0xfc) | 0x80000000;
+ if (busno != 0)
+ address |= 1;
+
+ *(volatile int32_t *) 0xfb0000f0 |= 0x2;
+
+ udelay(30);
+
+ *(volatile int32_t *) 0xfb0006f8 = address;
+ *(volatile int32_t *) 0xfb0006fc = val;
+
+ udelay(30);
+
+ *(volatile int32_t *) 0xfb0000f0 |= 0x2;
+
+ return PCIBIOS_SUCCESSFUL;
+}
+
+static int titan_ht_config_write(struct pci_bus *bus, unsigned int devfn,
+ int offset, int size, u32 val)
+{
+ uint32_t val1, val2, mask;
+
+ titan_ht_config_read_dword(bus, devfn, offset, &val2);
+
+ val1 = val << ((offset & 3) << 3);
+ mask = ~(0xffffffffU >> ((4 - size) << 8));
+ val2 &= ~(mask << ((offset & 3) << 8));
+
+ titan_ht_config_write_dword(bus, devfn, offset, val1 | val2);
+
+ return PCIBIOS_SUCCESSFUL;
+}
+
+struct pci_ops titan_ht_pci_ops = {
+ .read = titan_ht_config_read,
+ .write = titan_ht_config_write,
+};