summaryrefslogtreecommitdiffstats
path: root/arch/mips/pmc-sierra/yosemite/ht.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/mips/pmc-sierra/yosemite/ht.c')
-rw-r--r--arch/mips/pmc-sierra/yosemite/ht.c404
1 files changed, 0 insertions, 404 deletions
diff --git a/arch/mips/pmc-sierra/yosemite/ht.c b/arch/mips/pmc-sierra/yosemite/ht.c
deleted file mode 100644
index 14dc9c8fff0e..000000000000
--- a/arch/mips/pmc-sierra/yosemite/ht.c
+++ /dev/null
@@ -1,404 +0,0 @@
-/*
- * 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 <asm/pci.h>
-#include <asm/io.h>
-
-#include <linux/init.h>
-#include <asm/titan_dep.h>
-
-#ifdef CONFIG_HYPERTRANSPORT
-
-
-/*
- * This function check if the Hypertransport Link Initialization completed. If
- * it did, then proceed further with scanning bus #2
- */
-static __inline__ int check_titan_htlink(void)
-{
- u32 val;
-
- val = *(volatile uint32_t *)(RM9000x2_HTLINK_REG);
- if (val & 0x00000020)
- /* HT Link Initialization completed */
- return 1;
- else
- return 0;
-}
-
-static int titan_ht_config_read_dword(struct pci_dev *device,
- int offset, u32* val)
-{
- int dev, bus, func;
- uint32_t address_reg, data_reg;
- uint32_t address;
-
- bus = device->bus->number;
- dev = PCI_SLOT(device->devfn);
- func = PCI_FUNC(device->devfn);
-
- /* XXX Need to change the Bus # */
- if (bus > 2)
- address = (bus << 16) | (dev << 11) | (func << 8) | (offset & 0xfc) |
- 0x80000000 | 0x1;
- else
- address = (dev << 11) | (func << 8) | (offset & 0xfc) | 0x80000000;
-
- address_reg = RM9000x2_OCD_HTCFGA;
- data_reg = RM9000x2_OCD_HTCFGD;
-
- RM9K_WRITE(address_reg, address);
- RM9K_READ(data_reg, val);
-
- return PCIBIOS_SUCCESSFUL;
-}
-
-
-static int titan_ht_config_read_word(struct pci_dev *device,
- int offset, u16* val)
-{
- int dev, bus, func;
- uint32_t address_reg, data_reg;
- uint32_t address;
-
- bus = device->bus->number;
- dev = PCI_SLOT(device->devfn);
- func = PCI_FUNC(device->devfn);
-
- /* XXX Need to change the Bus # */
- if (bus > 2)
- address = (bus << 16) | (dev << 11) | (func << 8) | (offset & 0xfc) |
- 0x80000000 | 0x1;
- else
- address = (dev << 11) | (func << 8) | (offset & 0xfc) | 0x80000000;
-
- address_reg = RM9000x2_OCD_HTCFGA;
- data_reg = RM9000x2_OCD_HTCFGD;
-
- if ((offset & 0x3) == 0)
- offset = 0x2;
- else
- offset = 0x0;
-
- RM9K_WRITE(address_reg, address);
- RM9K_READ_16(data_reg + offset, val);
-
- return PCIBIOS_SUCCESSFUL;
-}
-
-
-u32 longswap(unsigned long l)
-{
- unsigned char b1, b2, b3, b4;
-
- b1 = l&255;
- b2 = (l>>8)&255;
- b3 = (l>>16)&255;
- b4 = (l>>24)&255;
-
- return ((b1<<24) + (b2<<16) + (b3<<8) + b4);
-}
-
-
-static int titan_ht_config_read_byte(struct pci_dev *device,
- int offset, u8* val)
-{
- int dev, bus, func;
- uint32_t address_reg, data_reg;
- uint32_t address;
- int offset1;
-
- bus = device->bus->number;
- dev = PCI_SLOT(device->devfn);
- func = PCI_FUNC(device->devfn);
-
- /* XXX Need to change the Bus # */
- if (bus > 2)
- address = (bus << 16) | (dev << 11) | (func << 8) | (offset & 0xfc) |
- 0x80000000 | 0x1;
- else
- address = (dev << 11) | (func << 8) | (offset & 0xfc) | 0x80000000;
-
- address_reg = RM9000x2_OCD_HTCFGA;
- data_reg = RM9000x2_OCD_HTCFGD;
-
- RM9K_WRITE(address_reg, address);
-
- if ((offset & 0x3) == 0) {
- offset1 = 0x3;
- }
- if ((offset & 0x3) == 1) {
- offset1 = 0x2;
- }
- if ((offset & 0x3) == 2) {
- offset1 = 0x1;
- }
- if ((offset & 0x3) == 3) {
- offset1 = 0x0;
- }
- RM9K_READ_8(data_reg + offset1, val);
-
- return PCIBIOS_SUCCESSFUL;
-}
-
-
-static int titan_ht_config_write_dword(struct pci_dev *device,
- int offset, u8 val)
-{
- int dev, bus, func;
- uint32_t address_reg, data_reg;
- uint32_t address;
-
- bus = device->bus->number;
- dev = PCI_SLOT(device->devfn);
- func = PCI_FUNC(device->devfn);
-
- /* XXX Need to change the Bus # */
- if (bus > 2)
- address = (bus << 16) | (dev << 11) | (func << 8) | (offset & 0xfc) |
- 0x80000000 | 0x1;
- else
- address = (dev << 11) | (func << 8) | (offset & 0xfc) | 0x80000000;
-
- address_reg = RM9000x2_OCD_HTCFGA;
- data_reg = RM9000x2_OCD_HTCFGD;
-
- RM9K_WRITE(address_reg, address);
- RM9K_WRITE(data_reg, val);
-
- return PCIBIOS_SUCCESSFUL;
-}
-
-static int titan_ht_config_write_word(struct pci_dev *device,
- int offset, u8 val)
-{
- int dev, bus, func;
- uint32_t address_reg, data_reg;
- uint32_t address;
-
- bus = device->bus->number;
- dev = PCI_SLOT(device->devfn);
- func = PCI_FUNC(device->devfn);
-
- /* XXX Need to change the Bus # */
- if (bus > 2)
- address = (bus << 16) | (dev << 11) | (func << 8) | (offset & 0xfc) |
- 0x80000000 | 0x1;
- else
- address = (dev << 11) | (func << 8) | (offset & 0xfc) | 0x80000000;
-
- address_reg = RM9000x2_OCD_HTCFGA;
- data_reg = RM9000x2_OCD_HTCFGD;
-
- if ((offset & 0x3) == 0)
- offset = 0x2;
- else
- offset = 0x0;
-
- RM9K_WRITE(address_reg, address);
- RM9K_WRITE_16(data_reg + offset, val);
-
- return PCIBIOS_SUCCESSFUL;
-}
-
-static int titan_ht_config_write_byte(struct pci_dev *device,
- int offset, u8 val)
-{
- int dev, bus, func;
- uint32_t address_reg, data_reg;
- uint32_t address;
- int offset1;
-
- bus = device->bus->number;
- dev = PCI_SLOT(device->devfn);
- func = PCI_FUNC(device->devfn);
-
- /* XXX Need to change the Bus # */
- if (bus > 2)
- address = (bus << 16) | (dev << 11) | (func << 8) | (offset & 0xfc) |
- 0x80000000 | 0x1;
- else
- address = (dev << 11) | (func << 8) | (offset & 0xfc) | 0x80000000;
-
- address_reg = RM9000x2_OCD_HTCFGA;
- data_reg = RM9000x2_OCD_HTCFGD;
-
- RM9K_WRITE(address_reg, address);
-
- if ((offset & 0x3) == 0) {
- offset1 = 0x3;
- }
- if ((offset & 0x3) == 1) {
- offset1 = 0x2;
- }
- if ((offset & 0x3) == 2) {
- offset1 = 0x1;
- }
- if ((offset & 0x3) == 3) {
- offset1 = 0x0;
- }
-
- RM9K_WRITE_8(data_reg + offset1, val);
- return PCIBIOS_SUCCESSFUL;
-}
-
-
-static void titan_pcibios_set_master(struct pci_dev *dev)
-{
- u16 cmd;
- int bus = dev->bus->number;
-
- if (check_titan_htlink())
- titan_ht_config_read_word(dev, PCI_COMMAND, &cmd);
-
- cmd |= PCI_COMMAND_MASTER;
-
- if (check_titan_htlink())
- titan_ht_config_write_word(dev, PCI_COMMAND, cmd);
-}
-
-
-int pcibios_enable_resources(struct pci_dev *dev)
-{
- u16 cmd, old_cmd;
- u8 tmp1;
- int idx;
- struct resource *r;
- int bus = dev->bus->number;
-
- if (check_titan_htlink())
- titan_ht_config_read_word(dev, PCI_COMMAND, &cmd);
-
- old_cmd = cmd;
- for (idx = 0; idx < 6; idx++) {
- r = &dev->resource[idx];
- if (!r->start && r->end) {
- printk(KERN_ERR
- "PCI: Device %s not available because of "
- "resource collisions\n", pci_name(dev));
- return -EINVAL;
- }
- if (r->flags & IORESOURCE_IO)
- cmd |= PCI_COMMAND_IO;
- if (r->flags & IORESOURCE_MEM)
- cmd |= PCI_COMMAND_MEMORY;
- }
- if (cmd != old_cmd) {
- if (check_titan_htlink())
- titan_ht_config_write_word(dev, PCI_COMMAND, cmd);
- }
-
- if (check_titan_htlink())
- titan_ht_config_read_byte(dev, PCI_CACHE_LINE_SIZE, &tmp1);
-
- if (tmp1 != 8) {
- printk(KERN_WARNING "PCI setting cache line size to 8 from "
- "%d\n", tmp1);
- }
-
- if (check_titan_htlink())
- titan_ht_config_write_byte(dev, PCI_CACHE_LINE_SIZE, 8);
-
- if (check_titan_htlink())
- titan_ht_config_read_byte(dev, PCI_LATENCY_TIMER, &tmp1);
-
- if (tmp1 < 32 || tmp1 == 0xff) {
- printk(KERN_WARNING "PCI setting latency timer to 32 from %d\n",
- tmp1);
- }
-
- if (check_titan_htlink())
- titan_ht_config_write_byte(dev, PCI_LATENCY_TIMER, 32);
-
- return 0;
-}
-
-
-int pcibios_enable_device(struct pci_dev *dev, int mask)
-{
- return pcibios_enable_resources(dev);
-}
-
-resource_size_t pcibios_align_resource(void *data, const struct resource *res,
- resource_size_t size, resource_size_t align)
-{
- struct pci_dev *dev = data;
- resource_size_t start = res->start;
-
- if (res->flags & IORESOURCE_IO) {
- /* We need to avoid collisions with `mirrored' VGA ports
- and other strange ISA hardware, so we always want the
- addresses kilobyte aligned. */
- if (size > 0x100) {
- printk(KERN_ERR "PCI: I/O Region %s/%d too large"
- " (%ld bytes)\n", pci_name(dev),
- dev->resource - res, size);
- }
-
- start = (start + 1024 - 1) & ~(1024 - 1);
- }
-
- return start;
-}
-
-struct pci_ops titan_pci_ops = {
- titan_ht_config_read_byte,
- titan_ht_config_read_word,
- titan_ht_config_read_dword,
- titan_ht_config_write_byte,
- titan_ht_config_write_word,
- titan_ht_config_write_dword
-};
-
-void __init pcibios_fixup_bus(struct pci_bus *c)
-{
- titan_ht_pcibios_fixup_bus(c);
-}
-
-void __init pcibios_init(void)
-{
-
- /* Reset PCI I/O and PCI MEM values */
- /* XXX Need to add the proper values here */
- ioport_resource.start = 0xe0000000;
- ioport_resource.end = 0xe0000000 + 0x20000000 - 1;
- iomem_resource.start = 0xc0000000;
- iomem_resource.end = 0xc0000000 + 0x20000000 - 1;
-
- /* XXX Need to add bus values */
- pci_scan_bus(2, &titan_pci_ops, NULL);
- pci_scan_bus(3, &titan_pci_ops, NULL);
-}
-
-unsigned __init int pcibios_assign_all_busses(void)
-{
- /* We want to use the PCI bus detection done by PMON */
- return 0;
-}
-
-#endif /* CONFIG_HYPERTRANSPORT */
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-24 00:51:35 +0100