/* $XConsortium: nv_driver.c /main/3 1996/10/28 05:13:37 kaleb $ */
/*
* Copyright 1996-1997 David J. McKay
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* DAVID J. MCKAY BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
* OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
/*
* GPL licensing note -- nVidia is allowing a liberal interpretation of
* the documentation restriction above, to merely say that this nVidia's
* copyright and disclaimer should be included with all code derived
* from this source. -- Jeff Garzik <jgarzik@pobox.com>, 01/Nov/99
*/
/* Hacked together from mga driver and 3.3.4 NVIDIA driver by Jarno Paananen
<jpaana@s2.org> */
/* $XFree86: xc/programs/Xserver/hw/xfree86/drivers/nv/nv_setup.c,v 1.18 2002/08/0
5 20:47:06 mvojkovi Exp $ */
#include <linux/delay.h>
#include <linux/pci.h>
#include <linux/pci_ids.h>
#include "nv_type.h"
#include "rivafb.h"
#include "nvreg.h"
#ifndef CONFIG_PCI /* sanity check */
#error This driver requires PCI support.
#endif
#define PFX "rivafb: "
static inline unsigned char MISCin(struct riva_par *par)
{
return (VGA_RD08(par->riva.PVIO, 0x3cc));
}
static Bool
riva_is_connected(struct riva_par *par, Bool second)
{
volatile U032 __iomem *PRAMDAC = par->riva.PRAMDAC0;
U032 reg52C, reg608;
Bool present;
if(second) PRAMDAC += 0x800;
reg52C = NV_RD32(PRAMDAC, 0x052C);
reg608 = NV_RD32(PRAMDAC, 0x0608);
NV_WR32(PRAMDAC, 0x0608, reg608 & ~0x00010000);
NV_WR32(PRAMDAC, 0x052C, reg52C & 0x0000FEEE);
mdelay(1);
NV_WR32(PRAMDAC, 0x052C, NV_RD32(PRAMDAC, 0x052C) | 1);
NV_WR32(par->riva.PRAMDAC0, 0x0610, 0x94050140);
NV_WR32(par->riva.PRAMDAC0, 0x0608, 0x00001000);
mdelay(1);
present = (NV_RD32(PRAMDAC, 0x0608) & (1 << 28)) ? TRUE : FALSE;
NV_WR32(par->riva.PRAMDAC0, 0x0608,
NV_RD32(par->riva.PRAMDAC0, 0x0608) & 0x0000EFFF);
NV_WR32(PRAMDAC, 0x052C, reg52C);
NV_WR32(PRAMDAC, 0x0608, reg608);
return present;
}
static void
riva_override_CRTC(struct riva_par *par)
{
printk(KERN_INFO PFX
"Detected CRTC controller %i being used\n",
par->SecondCRTC ? 1 : 0);
if(par->forceCRTC != -1) {
printk(KERN_INFO PFX
"Forcing usage of CRTC %i\n", par->forceCRTC);
par->SecondCRTC = par->forceCRTC;
}
}
static void
riva_is_second(struct riva_par *par)
{
if (par->FlatPanel == 1) {
switch(par->Chipset & 0xffff) {
case 0x0174:
case 0x0175:
case 0x0176:
case 0x0177:
case 0x0179:
case 0x017C:
case 0x017D:
case 0x0186:
case 0x0187:
/* this might not be a good default for the chips below */
case 0x0286:
case 0x028C:
case 0x0316:
case 0x0317:
case 0x031A:
case 0x031B:
case 0x031C:
case 0x031D:
case 0x031E:
case 0x031F:
case 0x0324:
case 0x0325:
case 0x0328:
case 0x0329:
case 0x032C:
case 0x032D:
par->SecondCRTC = TRUE;
break;
default:
par->SecondCRTC = FALSE;
break;
}
} else {
if(riva_is_connected(par, 0)) {
if (NV_RD32(par->riva.PRAMDAC0, 0x0000052C) & 0x100)
par->SecondCRTC = TRUE;
else
par->SecondCRTC = FALSE;
} else
if (riva_is_connected(par, 1)) {
if(NV_RD32(par->riva.PRAMDAC0, 0x0000252C) & 0x100)
par->SecondCRTC = TRUE;
else
par->SecondCRTC = FALSE;
} else /* default */
par->SecondCRTC = FALSE;
}
riva_override_CRTC(par);
}
unsigned long riva_get_memlen(struct riva_par *par)
{
RIVA_HW_INST *chip = &par->riva;
unsigned long memlen = 0;
unsigned int chipset = par->Chipset;
struct pci_dev* dev;
int amt;
switch (chip->Architecture) {
case NV_ARCH_03:
if (NV_RD32(chip->PFB, 0x00000000) & 0x00000020) {
if (((NV_RD32(chip->PMC, 0x00000000) & 0xF0) == 0x20)
&& ((NV_RD32(chip->PMC, 0x00000000)&0x0F)>=0x02)) {
/*
* SDRAM 128 ZX.
*/
switch (NV_RD32(chip->PFB,0x00000000) & 0x03) {
case 2:
memlen = 1024 * 4;
break;
case 1:
memlen = 1024 * 2;
break;
default:
memlen = 1024 * 8;
break;
}
} else {
memlen = 1024 * 8;
}
} else {
/*
* SGRAM 128.
*/
switch (NV_RD32(chip->PFB, 0x00000000) & 0x00000003) {
case 0:
memlen = 1024 * 8;
break;
case 2:
memlen = 1024 * 4;
break;
default:
memlen = 1024 * 2;
break;
}
}
break;
case NV_ARCH_04:
if (NV_RD32(chip->PFB, 0x00000000) & 0x00000100) {
memlen = ((NV_RD32(chip->PFB, 0x00000000)>>12)&0x0F) *
1024 * 2 + 1024 * 2;
} else {
switch (NV_RD32(chip->PFB, 0x00000000) & 0x00000003) {
case 0:
memlen = 1024 * 32;
break;
case 1:
memlen = 1024 * 4;
break;
case 2:
memlen = 1024 * 8;
break;
case 3:
default:
memlen = 1024 * 16;
break;
}
}
break;
case NV_ARCH_10:
case NV_ARCH_20:
case NV_ARCH_30:
if(chipset == NV_CHIP_IGEFORCE2) {
dev = pci_get_bus_and_slot(0, 1);
pci_read_config_dword(dev, 0x7C, &amt);
pci_dev_put(dev);
memlen = (((amt >> 6) & 31) + 1) * 1024;
} else if (chipset == NV_CHIP_0x01F0) {
dev = pci_get_bus_and_slot(0, 1);
pci_read_config_dword(dev, 0x84, &amt);
pci_dev_put(dev);
memlen = (((amt >> 4) & 127) + 1) * 1024;
} else {
switch ((NV_RD32(chip->PFB, 0x0000020C) >> 20) &
0x000000FF){
case 0x02:
memlen = 1024 * 2;
break;
case 0x04:
memlen = 1024 * 4;
break;
case 0x08:
memlen = 1024 * 8;
break;
case 0x10:
memlen = 1024 * 16;
break;
case 0x20:
memlen = 1024 * 32;
break;
case 0x40:
memlen = 1024 * 64;
break;
case 0x80:
memlen = 1024 * 128;
break;
default:
memlen = 1024 * 16;
break;
}
}
break;
}
return memlen;
}
unsigned long riva_get_maxdclk(struct riva_par *par)
{
RIVA_HW_INST *chip = &par->riva;
unsigned long dclk = 0;
switch (chip->Architecture) {
case NV_ARCH_03:
if (NV_RD32(chip->PFB, 0x00000000) & 0x00000020) {
if (((NV_RD32(chip->PMC, 0x00000000) & 0xF0) == 0x20)
&& ((NV_RD32(chip->PMC,0x00000000)&0x0F) >= 0x02)) {
/*
* SDRAM 128 ZX.
*/
dclk = 800000;
} else {
dclk = 1000000;
}
} else {
/*
* SGRAM 128.
*/
dclk = 1000000;
}
break;
case NV_ARCH_04:
case NV_ARCH_10:
case NV_ARCH_20:
case NV_ARCH_30:
switch ((NV_RD32(chip->PFB, 0x00000000) >> 3) & 0x00000003) {
case 3:
dclk = 800000;
break;
default:
dclk = 1000000;
break;
}
break;
}
return dclk;
}
void
riva_common_setup(struct riva_par *par)
{
par->riva.EnableIRQ = 0;
par->riva.PRAMDAC0 =
(volatile U032 __iomem *)(par->ctrl_base + 0x00680000);
par->riva.PFB =
(volatile U032 __iomem *)(par->ctrl_base + 0x00100000);
par->riva.PFIFO =
(volatile U032 __iomem *)(par->ctrl_base + 0x00002000);
par->riva.PGRAPH =
(volatile U032 __iomem *)(par->ctrl_base + 0x00400000);
par->riva.PEXTDEV =
(volatile U032 __iomem *)(par->ctrl_base + 0x00101000);
par->riva.PTIMER =
(volatile U032 __iomem *)(par->ctrl_base + 0x00009000);
par->riva.PMC =
(volatile U032 __iomem *)(par->ctrl_base + 0x00000000);
par->riva.FIFO =
(volatile U032 __iomem *)(par->ctrl_base + 0x00800000);
par->riva.PCIO0 = par->ctrl_base + 0x00601000;
par->riva.PDIO0 = par->ctrl_base + 0x00681000;
par->riva.PVIO = par->ctrl_base + 0x000C0000;
par->riva.IO = (MISCin(par) & 0x01) ? 0x3D0 : 0x3B0;
if (par->FlatPanel == -1) {
switch (par->Chipset & 0xffff) {
case 0x0112: /* known laptop chips */
case 0x0174:
case 0x0175:
case 0x0176:
case 0x0177:
case 0x0179:
case 0x017C:
case 0x017D:
case 0x0186:
case 0x0187:
case 0x0286:
case 0x028C:
case 0x0316:
case 0x0317:
case 0x031A:
case 0x031B:
case 0x031C:
case 0x031D:
case 0x031E:
case 0x031F:
case 0x0324:
case 0x0325:
case 0x0328:
case 0x0329:
case 0x032C:
case 0x032D:
printk(KERN_INFO PFX
"On a laptop. Assuming Digital Flat Panel\n");
par->FlatPanel = 1;
break;
default:
break;
}
}
switch (par->Chipset & 0x0ff0) {
case 0x0110:
if (par->Chipset == NV_CHIP_GEFORCE2_GO)
par->SecondCRTC = TRUE;
#if defined(__powerpc__)
if (par->FlatPanel == 1)
par->SecondCRTC = TRUE;
#endif
riva_override_CRTC(par);
break;
case 0x0170:
case 0x0180:
case 0x01F0:
case 0x0250:
case 0x0280:
case 0x0300:
case 0x0310:
case 0x0320:
case 0x0330:
case 0x0340:
riva_is_second(par);
break;
default:
break;
}
if (par->SecondCRTC) {
par->riva.PCIO = par->riva.PCIO0 + 0x2000;
par->riva.PCRTC = par->riva.PCRTC0 + 0x800;
par->riva.PRAMDAC = par->riva.PRAMDAC0 + 0x800;
par->riva.PDIO = par->riva.PDIO0 + 0x2000;
} else {
par->riva.PCIO = par->riva.PCIO0;
par->riva.PCRTC = par->riva.PCRTC0;
par->riva.PRAMDAC = par->riva.PRAMDAC0;
par->riva.PDIO = par->riva.PDIO0;
}
if (par->FlatPanel == -1) {
/* Fix me, need x86 DDC code */
par->FlatPanel = 0;
}
par->riva.flatPanel = (par->FlatPanel > 0) ? TRUE : FALSE;
RivaGetConfig(&par->riva, par->Chipset);
}
