You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
455 lines
13 KiB
455 lines
13 KiB
20 years ago
|
/*
|
||
|
|
* 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/config.h>
|
||
|
|
#include <linux/types.h>
|
||
|
|
#include <linux/pci.h>
|
||
|
|
#include <linux/kernel.h>
|
||
|
|
#include <linux/slab.h>
|
||
|
|
#include <linux/version.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);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
void pcibios_update_resource(struct pci_dev *dev, struct resource *root,
|
||
|
|
struct resource *res, int resource)
|
||
|
|
{
|
||
|
|
u32 new, check;
|
||
|
|
int reg;
|
||
|
|
|
||
|
|
return;
|
||
|
|
|
||
|
|
new = res->start | (res->flags & PCI_REGION_FLAG_MASK);
|
||
|
|
if (resource < 6) {
|
||
|
|
reg = PCI_BASE_ADDRESS_0 + 4 * resource;
|
||
|
|
} else if (resource == PCI_ROM_RESOURCE) {
|
||
|
|
res->flags |= IORESOURCE_ROM_ENABLE;
|
||
|
|
reg = dev->rom_base_reg;
|
||
|
|
} else {
|
||
|
|
/*
|
||
|
|
* Somebody might have asked allocation of a non-standard
|
||
|
|
* resource
|
||
|
|
*/
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
pci_write_config_dword(dev, reg, new);
|
||
|
|
pci_read_config_dword(dev, reg, &check);
|
||
|
|
if ((new ^ check) &
|
||
|
|
((new & PCI_BASE_ADDRESS_SPACE_IO) ? PCI_BASE_ADDRESS_IO_MASK :
|
||
|
|
PCI_BASE_ADDRESS_MEM_MASK)) {
|
||
|
|
printk(KERN_ERR "PCI: Error while updating region "
|
||
|
|
"%s/%d (%08x != %08x)\n", pci_name(dev), resource,
|
||
|
|
new, check);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
void pcibios_align_resource(void *data, struct resource *res,
|
||
|
|
unsigned long size, unsigned long align)
|
||
|
|
{
|
||
|
|
struct pci_dev *dev = data;
|
||
|
|
|
||
|
|
if (res->flags & IORESOURCE_IO) {
|
||
|
|
unsigned long start = res->start;
|
||
|
|
|
||
|
|
/* 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);
|
||
|
|
res->start = 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);
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* for parsing "pci=" kernel boot arguments.
|
||
|
|
*/
|
||
|
|
char *pcibios_setup(char *str)
|
||
|
|
{
|
||
|
|
printk(KERN_INFO "rr: pcibios_setup\n");
|
||
|
|
/* Nothing to do for now. */
|
||
|
|
|
||
|
|
return str;
|
||
|
|
}
|
||
|
|
|
||
|
|
unsigned __init int pcibios_assign_all_busses(void)
|
||
|
|
{
|
||
|
|
/* We want to use the PCI bus detection done by PMON */
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
#endif /* CONFIG_HYPERTRANSPORT */
|