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trying to translate some of this. 

git-svn-id: svn://svn.coreboot.org/coreboot/trunk@2228 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1
This commit is contained in:
Stefan Reinauer 2006-03-26 17:13:31 +00:00
parent 96f8fb5723
commit c3efd138a7
1 changed files with 135 additions and 56 deletions
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191
src/northbridge/amd/amdk8/incoherent_ht.c
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@ -1,8 +1,11 @@
/* /*
This should be done by Eric * incoherent hypertransport enumeration
2004.12 yhlu add multi ht chain dynamically support * originally written by Eric Biederman
2005.11 yhlu add let real sb to use small unitid *
*/ * 2004.12 yhlu add multi ht chain dynamically support
* 2005.11 yhlu add let real sb to use small unitid
* 2006.03 stepan cleanups
*/
#include <device/pci_def.h> #include <device/pci_def.h>
#include <device/pci_ids.h> #include <device/pci_ids.h>
#include <device/hypertransport_def.h> #include <device/hypertransport_def.h>
@ -19,7 +22,10 @@
#define K8_ALLOCATE_IO_RANGE 0 #define K8_ALLOCATE_IO_RANGE 0
#endif #endif
// Do we need allocate MMIO? Current We direct last 64M to sblink only, We can not lose access to last 4M range to ROM /* Do we need to allocate MMIO? Currently we direct the last 64M
* to the southbridge link only. We have to remain access to the
* 4G-4M range for the southbridge (Flash ROM)
*/
#ifndef K8_ALLOCATE_MMIO_RANGE #ifndef K8_ALLOCATE_MMIO_RANGE
#define K8_ALLOCATE_MMIO_RANGE 0 #define K8_ALLOCATE_MMIO_RANGE 0
#endif #endif
@ -49,7 +55,9 @@ static uint8_t ht_lookup_capability(device_t dev, uint16_t val)
if (pos > PCI_CAP_LIST_NEXT) { if (pos > PCI_CAP_LIST_NEXT) {
pos = pci_read_config8(dev, pos); pos = pci_read_config8(dev, pos);
} }
while(pos != 0) { /* loop through the linked list */
/* loop through the linked list */
while(pos != 0) {
uint8_t cap; uint8_t cap;
cap = pci_read_config8(dev, pos + PCI_CAP_LIST_ID); cap = pci_read_config8(dev, pos + PCI_CAP_LIST_ID);
if (cap == PCI_CAP_ID_HT) { if (cap == PCI_CAP_ID_HT) {
@ -81,7 +89,7 @@ static void ht_collapse_previous_enumeration(uint8_t bus, unsigned offset_unitid
device_t dev; device_t dev;
uint32_t id; uint32_t id;
//actually, only for one HT device HT chain, and unitid is 0 // actually, only for one HT device HT chain, and unitid is 0
#if HT_CHAIN_UNITID_BASE == 0 #if HT_CHAIN_UNITID_BASE == 0
if(offset_unitid) { if(offset_unitid) {
return; return;
@ -260,22 +268,33 @@ static int ht_optimize_link(
return needs_reset; return needs_reset;
} }
#if (USE_DCACHE_RAM == 1) && (K8_SCAN_PCI_BUS == 1) #if (USE_DCACHE_RAM == 1) && (K8_SCAN_PCI_BUS == 1)
#if RAMINIT_SYSINFO == 1 #if RAMINIT_SYSINFO == 1
static void ht_setup_chainx(device_t udev, uint8_t upos, uint8_t bus, unsigned offset_unitid, struct sys_info *sysinfo); static void ht_setup_chainx(device_t udev, uint8_t upos, uint8_t bus,
unsigned offset_unitid, struct sys_info *sysinfo);
static int scan_pci_bus( unsigned bus , struct sys_info *sysinfo) static int scan_pci_bus( unsigned bus , struct sys_info *sysinfo)
#else #else
static int ht_setup_chainx(device_t udev, uint8_t upos, uint8_t bus, unsigned offset_unitid); static int ht_setup_chainx(device_t udev, uint8_t upos, uint8_t bus,
unsigned offset_unitid);
static int scan_pci_bus( unsigned bus) static int scan_pci_bus( unsigned bus)
#endif #endif
{ {
/* /* Here we already can access PCI_DEV(bus, 0, 0) to
here we already can access PCI_DEV(bus, 0, 0) to PCI_DEV(bus, 0x1f, 0x7) * PCI_DEV(bus, 0x1f, 0x7).
So We can scan these devices to find out if they are bridge *
If it is pci bridge, We need to set busn in bridge, and go on * So scan these devices to find out whether there are more bridges.
For ht bridge, We need to set the busn in bridge and ht_setup_chainx, and the scan_pci_bus *
*/ * - If we find a pci bridge, set the bus number in the bridge, and
* continue with the next device.
*
* - For hypertransport bridges, set the bus number in the bridge and
* call ht_setup_chainx(), and scan_pci_bus()
*
*/
unsigned int devfn; unsigned int devfn;
unsigned new_bus; unsigned new_bus;
unsigned max_bus; unsigned max_bus;
@ -337,12 +356,18 @@ static int scan_pci_bus( unsigned bus)
((unsigned int) max_bus << 16)); ((unsigned int) max_bus << 16));
pci_write_config32(dev, PCI_PRIMARY_BUS, buses); pci_write_config32(dev, PCI_PRIMARY_BUS, buses);
/* here we need to figure out if dev is a ht bridge /* Here we need to figure out if dev is a ht
if it is ht bridge, we need to call ht_setup_chainx at first * bridge. If it is, we need to call
Not verified --- yhlu * ht_setup_chainx() first
*/ *
uint8_t upos; * Not verified --- yhlu
upos = ht_lookup_host_capability(dev); // one func one ht sub */
uint8_t upos; // is this valid C?
// one func one ht sub
upos = ht_lookup_host_capability(dev);
if (upos) { // sub ht chain if (upos) { // sub ht chain
uint8_t busn; uint8_t busn;
busn = (new_bus & 0xff); busn = (new_bus & 0xff);
@ -380,6 +405,7 @@ static int scan_pci_bus( unsigned bus)
* time probing another function. * time probing another function.
* Skip to next device. * Skip to next device.
*/ */
if ( ((devfn & 0x07) == 0x00) && ((hdr_type & 0x80) != 0x80)) if ( ((devfn & 0x07) == 0x00) && ((hdr_type & 0x80) != 0x80))
{ {
devfn += 0x07; devfn += 0x07;
@ -396,7 +422,9 @@ static void ht_setup_chainx(device_t udev, uint8_t upos, uint8_t bus, unsigned o
static int ht_setup_chainx(device_t udev, uint8_t upos, uint8_t bus, unsigned offset_unitid) static int ht_setup_chainx(device_t udev, uint8_t upos, uint8_t bus, unsigned offset_unitid)
#endif #endif
{ {
//even HT_CHAIN_UNITID_BASE == 0, we still can go through this function, because of end_of_chain check, also We need it to optimize link // execute this function even with HT_CHAIN_UNITID_BASE == 0,
// because of the end_of_chain check, and we need it to
// optimize the links
uint8_t next_unitid, last_unitid; uint8_t next_unitid, last_unitid;
unsigned uoffs; unsigned uoffs;
@ -406,7 +434,8 @@ static int ht_setup_chainx(device_t udev, uint8_t upos, uint8_t bus, unsigned of
#endif #endif
#if HT_CHAIN_END_UNITID_BASE < HT_CHAIN_UNITID_BASE #if HT_CHAIN_END_UNITID_BASE < HT_CHAIN_UNITID_BASE
//let't record the device of last ht device, So we can set the Unitid to HT_CHAIN_END_UNITID_BASE // record the device id of last ht device, so we can set the
// unit id to HT_CHAIN_END_UNITID_BASE
unsigned real_last_unitid; unsigned real_last_unitid;
uint8_t real_last_pos; uint8_t real_last_pos;
int ht_dev_num = 0; int ht_dev_num = 0;
@ -490,15 +519,17 @@ static int ht_setup_chainx(device_t udev, uint8_t upos, uint8_t bus, unsigned of
next_unitid += count; next_unitid += count;
/* Find which side of the ht link we are on, /* Find which side of the ht link we are on, by reading
* by reading which direction our last write to PCI_CAP_FLAGS * which direction our last write to PCI_CAP_FLAGS came
* came from. * from.
*/ */
flags = pci_read_config16(dev, pos + PCI_CAP_FLAGS); flags = pci_read_config16(dev, pos + PCI_CAP_FLAGS);
offs = ((flags>>10) & 1) ? PCI_HT_SLAVE1_OFFS : PCI_HT_SLAVE0_OFFS; offs = ((flags>>10) & 1) ? PCI_HT_SLAVE1_OFFS : PCI_HT_SLAVE0_OFFS;
#if RAMINIT_SYSINFO == 1 #if RAMINIT_SYSINFO == 1
/* store the link pair here and we will Setup the Hypertransport link later, after we get final FID/VID */ /* store the link pair here and we will setup the
* Hypertransport link later, after we get final FID/VID
*/
{ {
struct link_pair_st *link_pair = &sysinfo->link_pair[sysinfo->link_pair_num]; struct link_pair_st *link_pair = &sysinfo->link_pair[sysinfo->link_pair_num];
link_pair->udev = udev; link_pair->udev = udev;
@ -513,7 +544,7 @@ static int ht_setup_chainx(device_t udev, uint8_t upos, uint8_t bus, unsigned of
reset_needed |= ht_optimize_link(udev, upos, uoffs, dev, pos, offs); reset_needed |= ht_optimize_link(udev, upos, uoffs, dev, pos, offs);
#endif #endif
/* Remeber the location of the last device */ /* Remember the location of the last device */
udev = dev; udev = dev;
upos = pos; upos = pos;
uoffs = ( offs != PCI_HT_SLAVE0_OFFS ) ? PCI_HT_SLAVE0_OFFS : PCI_HT_SLAVE1_OFFS; uoffs = ( offs != PCI_HT_SLAVE0_OFFS ) ? PCI_HT_SLAVE0_OFFS : PCI_HT_SLAVE1_OFFS;
@ -555,6 +586,8 @@ end_of_chain: ;
} }
#if RAMINIT_SYSINFO == 1 #if RAMINIT_SYSINFO == 1
static void ht_setup_chain(device_t udev, unsigned upos, struct sys_info *sysinfo) static void ht_setup_chain(device_t udev, unsigned upos, struct sys_info *sysinfo)
#else #else
@ -585,7 +618,10 @@ static int ht_setup_chain(device_t udev, unsigned upos)
return ht_setup_chainx(udev, upos, 0, offset_unitid); return ht_setup_chainx(udev, upos, 0, offset_unitid);
#endif #endif
} }
static int optimize_link_read_pointer(uint8_t node, uint8_t linkn, uint8_t linkt, uint8_t val)
static int optimize_link_read_pointer(uint8_t node, uint8_t linkn,
uint8_t linkt, uint8_t val)
{ {
uint32_t dword, dword_old; uint32_t dword, dword_old;
uint8_t link_type; uint8_t link_type;
@ -596,7 +632,8 @@ static int optimize_link_read_pointer(uint8_t node, uint8_t linkn, uint8_t linkt
dword_old = dword = pci_read_config32(PCI_DEV(0,0x18+node,3), 0xdc); dword_old = dword = pci_read_config32(PCI_DEV(0,0x18+node,3), 0xdc);
if ( (link_type & 7) == linkt ) { /* Coherent Link only linkt = 3, ncoherent = 7*/ /* coherent link only linkt = 3, non coherent = 7*/
if ( (link_type & 7) == linkt ) {
dword &= ~( 0xff<<(linkn *8) ); dword &= ~( 0xff<<(linkn *8) );
dword |= val << (linkn *8); dword |= val << (linkn *8);
} }
@ -650,11 +687,12 @@ static void ht_setup_chains(uint8_t ht_c_num, struct sys_info *sysinfo)
static int ht_setup_chains(uint8_t ht_c_num) static int ht_setup_chains(uint8_t ht_c_num)
#endif #endif
{ {
/* Assumption the HT chain that is bus 0 has the HT I/O Hub on it. /* Assumption: The HT chain that is bus 0 has the HT I/O Hub on it.
* On most boards this just happens. If a cpu has multiple * On most boards this just happens. If a cpu has multiple
* non Coherent links the appropriate bus registers for the * non coherent links the appropriate bus registers for the
* links needs to be programed to point at bus 0. * links needs to be programed to point at bus 0.
*/ */
uint8_t upos; uint8_t upos;
device_t udev; device_t udev;
uint8_t i; uint8_t i;
@ -679,9 +717,14 @@ static int ht_setup_chains(uint8_t ht_c_num)
reg = pci_read_config32(PCI_DEV(0,0x18,1), 0xe0 + i * 4); reg = pci_read_config32(PCI_DEV(0,0x18,1), 0xe0 + i * 4);
//We need setup 0x94, 0xb4, and 0xd4 according to the reg // We need to setup 0x94, 0xb4, and 0xd4 according to reg
devpos = ((reg & 0xf0)>>4)+0x18; // nodeid; it will decide 0x18 or 0x19
regpos = ((reg & 0xf00)>>8) * 0x20 + 0x94; // link n; it will decide 0x94 or 0xb4, 0x0xd4; // nodeid; it will decide 0x18 or 0x19
devpos = ((reg & 0xf0)>>4)+0x18;
// link n; it will decide 0x94 or 0xb4, 0x0xd4;
regpos = ((reg & 0xf00)>>8) * 0x20 + 0x94;
busn = (reg & 0xff0000)>>16; busn = (reg & 0xff0000)>>16;
dword = pci_read_config32( PCI_DEV(0, devpos, 0), regpos) ; dword = pci_read_config32( PCI_DEV(0, devpos, 0), regpos) ;
@ -710,12 +753,15 @@ static int ht_setup_chains(uint8_t ht_c_num)
#endif #endif
#if (USE_DCACHE_RAM == 1) && (K8_SCAN_PCI_BUS == 1) #if (USE_DCACHE_RAM == 1) && (K8_SCAN_PCI_BUS == 1)
/* You can use use this in romcc, because there is function call in romcc, recursive will kill you */ /* You can not use use this in romcc, because recursive
* function calls in romcc will kill you
*/
bus = busn; // we need 32 bit bus = busn; // we need 32 bit
#if RAMINIT_SYSINFO == 1 #if RAMINIT_SYSINFO == 1
scan_pci_bus(bus, sysinfo); scan_pci_bus(bus, sysinfo);
#else #else
reset_needed |= (scan_pci_bus(bus)>>16); // take out reset_needed that stored in upword // take out reset_needed that is stored in upword
reset_needed |= (scan_pci_bus(bus)>>16);
#endif #endif
#endif #endif
} }
@ -764,7 +810,8 @@ static int ht_setup_chains_x(void)
tempreg = 3 | ( 0<<4) | (((reg>>8) & 3)<<8) | (0<<16)| (0x3f<<24); tempreg = 3 | ( 0<<4) | (((reg>>8) & 3)<<8) | (0<<16)| (0x3f<<24);
pci_write_config32(PCI_DEV(0, 0x18, 1), 0xe0, tempreg); pci_write_config32(PCI_DEV(0, 0x18, 1), 0xe0, tempreg);
next_busn=0x3f+1; /* 0 will be used ht chain with SB we need to keep SB in bus0 in auto stage*/ /* 0 will be used ht chain with SB we need to keep SB in bus 0 in auto stage */
next_busn=0x3f+1;
#if K8_ALLOCATE_IO_RANGE == 1 #if K8_ALLOCATE_IO_RANGE == 1
/* io range allocation */ /* io range allocation */
@ -789,38 +836,67 @@ static int ht_setup_chains_x(void)
dev = PCI_DEV(0, 0x18+nodeid,0); dev = PCI_DEV(0, 0x18+nodeid,0);
for(linkn = 0; linkn<3; linkn++) { for(linkn = 0; linkn<3; linkn++) {
unsigned regpos; unsigned regpos;
regpos = 0x98 + 0x20 * linkn; regpos = 0x98 + 0x20 * linkn;
reg = pci_read_config32(dev, regpos); reg = pci_read_config32(dev, regpos);
if ((reg & 0x17) != 7) continue; /* it is not non conherent or not connected*/
print_linkn_in("NC node|link=", ((nodeid & 0xf)<<4)|(linkn & 0xf)); /* skip if link is non conherent or not connected*/
if ((reg & 0x17) != 7) continue;
print_linkn_in("NC node|link=",
((nodeid & 0xf)<<4)|(linkn & 0xf));
tempreg = 3 | (nodeid <<4) | (linkn<<8); tempreg = 3 | (nodeid <<4) | (linkn<<8);
/*compare (temp & 0xffff), with (PCI(0, 0x18, 1) 0xe0 to 0xec & 0xfffff) */
/* compare (temp & 0xffff) with
* (PCI(0, 0x18, 1) 0xe0 to 0xec & 0xfffff)
*/
for(ht_c_num=0;ht_c_num<4; ht_c_num++) { for(ht_c_num=0;ht_c_num<4; ht_c_num++) {
reg = pci_read_config32(PCI_DEV(0, 0x18, 1), 0xe0 + ht_c_num * 4); reg = pci_read_config32( PCI_DEV(0, 0x18, 1),
if(((reg & 0xffff) == (tempreg & 0xffff)) || ((reg & 0xffff) == 0x0000)) { /*we got it*/ 0xe0 + ht_c_num * 4);
if ( ((reg & 0xffff) == (tempreg & 0xffff))
|| ((reg & 0xffff) == 0x0000) ) {
/*we got it*/
break; break;
} }
} }
if(ht_c_num == 4) break; /*used up only 4 non conherent allowed*/
/*update to 0xe0...*/ /* used up the maximum allowed 4 non conherent links */
if((reg & 0xf) == 3) continue; /*SbLink so don't touch it */ if(ht_c_num == 4) break;
/* update to 0xe0...*/
if((reg & 0xf) == 3) continue; /* SbLink so don't touch it */
print_linkn_in("\tbusn=", next_busn); print_linkn_in("\tbusn=", next_busn);
tempreg |= (next_busn<<16)|((next_busn+0x3f)<<24); tempreg |= (next_busn<<16)|((next_busn+0x3f)<<24);
pci_write_config32(PCI_DEV(0, 0x18, 1), 0xe0 + ht_c_num * 4, tempreg); pci_write_config32(PCI_DEV(0, 0x18, 1),
0xe0 + ht_c_num * 4, tempreg);
next_busn+=0x3f+1; next_busn+=0x3f+1;
#if K8_ALLOCATE_IO_RANGE == 1 #if K8_ALLOCATE_IO_RANGE == 1
/* io range allocation */ /* io range allocation */
tempreg = nodeid | (linkn<<4) | ((next_io_base+0x3)<<12); //limit
pci_write_config32(PCI_DEV(0, 0x18, 1), 0xC4 + ht_c_num * 8, tempreg); // limit
tempreg = 3 /*| ( 3<<4)*/ | (next_io_base<<12); //base :ISA and VGA ? tempreg = nodeid | (linkn<<4) | ((next_io_base+0x3)<<12);
pci_write_config32(PCI_DEV(0, 0x18, 1), 0xC0 + ht_c_num * 8, tempreg); pci_write_config32( PCI_DEV(0, 0x18, 1),
0xC4 + ht_c_num * 8, tempreg);
// base :ISA and VGA ?
tempreg = 3 /*| ( 3<<4)*/ | (next_io_base<<12);
pci_write_config32(PCI_DEV(0, 0x18, 1),
0xC0 + ht_c_num * 8, tempreg);
next_io_base += 0x3+0x1; next_io_base += 0x3+0x1;
#endif #endif
} }
} }
/*update 0xe0, 0xe4, 0xe8, 0xec from PCI_DEV(0, 0x18,1) to PCI_DEV(0, 0x19,1) to PCI_DEV(0, 0x1f,1);*/
/* update 0xe0, 0xe4, 0xe8, 0xec from PCI_DEV(0, 0x18,1)
* to PCI_DEV(0, 0x19,1) to PCI_DEV(0, 0x1f,1);
*/
for(nodeid = 1; nodeid<nodes; nodeid++) { for(nodeid = 1; nodeid<nodes; nodeid++) {
int i; int i;
@ -871,7 +947,7 @@ static int ht_setup_chains_x(void)
#if RAMINIT_SYSINFO == 1 #if RAMINIT_SYSINFO == 1
static int optimize_link_incoherent_ht(struct sys_info *sysinfo) static int optimize_link_incoherent_ht(struct sys_info *sysinfo)
{ {
// We need to use recorded link pair info to optimize the link // We need to use the recorded link pair info to optimize the link
int i; int i;
int reset_needed = 0; int reset_needed = 0;
@ -879,7 +955,9 @@ static int optimize_link_incoherent_ht(struct sys_info *sysinfo)
for(i=0; i< link_pair_num; i++) { for(i=0; i< link_pair_num; i++) {
struct link_pair_st *link_pair= &sysinfo->link_pair[i]; struct link_pair_st *link_pair= &sysinfo->link_pair[i];
reset_needed |= ht_optimize_link(link_pair->udev, link_pair->upos, link_pair->uoffs, link_pair->dev, link_pair->pos, link_pair->offs); reset_needed |= ht_optimize_link(link_pair->udev,
link_pair->upos, link_pair->uoffs,
link_pair->dev, link_pair->pos, link_pair->offs);
} }
reset_needed |= optimize_link_read_pointers(sysinfo->ht_c_num); reset_needed |= optimize_link_read_pointers(sysinfo->ht_c_num);
@ -901,6 +979,7 @@ static unsigned get_sblnk(void)
/* Look up a which bus a given node/link combination is on. /* Look up a which bus a given node/link combination is on.
* return 0 when we can't find the answer. * return 0 when we can't find the answer.
*/ */
static unsigned node_link_to_bus(unsigned node, unsigned link) static unsigned node_link_to_bus(unsigned node, unsigned link)
{ {
unsigned reg; unsigned reg;