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Diffstat (limited to 'src/northbridge/amd/amdk8/incoherent_ht.c')
-rw-r--r--src/northbridge/amd/amdk8/incoherent_ht.c334
1 files changed, 231 insertions, 103 deletions
diff --git a/src/northbridge/amd/amdk8/incoherent_ht.c b/src/northbridge/amd/amdk8/incoherent_ht.c
index 7bb315d687..d4271efbda 100644
--- a/src/northbridge/amd/amdk8/incoherent_ht.c
+++ b/src/northbridge/amd/amdk8/incoherent_ht.c
@@ -10,6 +10,10 @@
#define K8_HT_FREQ_1G_SUPPORT 0
#endif
+#ifndef K8_SCAN_PCI_BUS
+ #define K8_SCAN_PCI_BUS 0
+#endif
+
static inline void print_linkn_in (const char *strval, uint8_t byteval)
{
#if 1
@@ -21,7 +25,7 @@ static inline void print_linkn_in (const char *strval, uint8_t byteval)
#endif
}
-static uint8_t ht_lookup_slave_capability(device_t dev)
+static uint8_t ht_lookup_capability(device_t dev, uint16_t val)
{
uint8_t pos;
uint8_t hdr_type;
@@ -44,8 +48,8 @@ static uint8_t ht_lookup_slave_capability(device_t dev)
uint16_t flags;
flags = pci_read_config16(dev, pos + PCI_CAP_FLAGS);
- if ((flags >> 13) == 0) {
- /* Entry is a Slave secondary, success... */
+ if ((flags >> 13) == val) {
+ /* Entry is a slave or host , success... */
break;
}
}
@@ -54,6 +58,16 @@ static uint8_t ht_lookup_slave_capability(device_t dev)
return pos;
}
+static uint8_t ht_lookup_slave_capability(device_t dev)
+{
+ return ht_lookup_capability(dev, 0); // Slave/Primary Interface Block Format
+}
+
+static uint8_t ht_lookup_host_capability(device_t dev)
+{
+ return ht_lookup_capability(dev, 1); // Host/Secondary Interface Block Format
+}
+
static void ht_collapse_previous_enumeration(uint8_t bus)
{
device_t dev;
@@ -135,25 +149,28 @@ static uint16_t ht_read_freq_cap(device_t dev, uint8_t pos)
return freq_cap;
}
+#define LINK_OFFS(CTRL, WIDTH,FREQ,FREQ_CAP) \
+ (((CTRL & 0xff) << 24) | ((WIDTH & 0xff) << 16) | ((FREQ & 0xff) << 8) | (FREQ_CAP & 0xFF))
-#define LINK_OFFS(WIDTH,FREQ,FREQ_CAP) \
- (((WIDTH & 0xff) << 16) | ((FREQ & 0xff) << 8) | (FREQ_CAP & 0xFF))
-
+#define LINK_CTRL(OFFS) ((OFFS >> 24) & 0xFF)
#define LINK_WIDTH(OFFS) ((OFFS >> 16) & 0xFF)
#define LINK_FREQ(OFFS) ((OFFS >> 8) & 0xFF)
#define LINK_FREQ_CAP(OFFS) ((OFFS) & 0xFF)
#define PCI_HT_HOST_OFFS LINK_OFFS( \
+ PCI_HT_CAP_HOST_CTRL, \
PCI_HT_CAP_HOST_WIDTH, \
PCI_HT_CAP_HOST_FREQ, \
PCI_HT_CAP_HOST_FREQ_CAP)
#define PCI_HT_SLAVE0_OFFS LINK_OFFS( \
+ PCI_HT_CAP_SLAVE_CTRL0, \
PCI_HT_CAP_SLAVE_WIDTH0, \
PCI_HT_CAP_SLAVE_FREQ0, \
PCI_HT_CAP_SLAVE_FREQ_CAP0)
#define PCI_HT_SLAVE1_OFFS LINK_OFFS( \
+ PCI_HT_CAP_SLAVE_CTRL1, \
PCI_HT_CAP_SLAVE_WIDTH1, \
PCI_HT_CAP_SLAVE_FREQ1, \
PCI_HT_CAP_SLAVE_FREQ_CAP1)
@@ -164,8 +181,8 @@ static int ht_optimize_link(
{
static const uint8_t link_width_to_pow2[]= { 3, 4, 0, 5, 1, 2, 0, 0 };
static const uint8_t pow2_to_link_width[] = { 0x7, 4, 5, 0, 1, 3 };
- uint16_t freq_cap1, freq_cap2, freq_cap, freq_mask;
- uint8_t width_cap1, width_cap2, width_cap, width, old_width, ln_width1, ln_width2;
+ uint16_t freq_cap1, freq_cap2;
+ uint8_t width_cap1, width_cap2, width, old_width, ln_width1, ln_width2;
uint8_t freq, old_freq;
int needs_reset;
/* Set link width and frequency */
@@ -228,94 +245,123 @@ static int ht_optimize_link(
return needs_reset;
}
-static int ht_setup_chain(device_t udev, uint8_t upos)
+#if (USE_DCACHE_RAM == 1) && (K8_SCAN_PCI_BUS == 1)
+static int ht_setup_chainx(device_t udev, uint8_t upos, uint8_t bus);
+static int scan_pci_bus( unsigned bus)
{
- /* 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
- * non Coherent links the appropriate bus registers for the
- * links needs to be programed to point at bus 0.
- */
- uint8_t next_unitid, last_unitid;
- int reset_needed;
- unsigned uoffs;
-
- /* Make certain the HT bus is not enumerated */
- ht_collapse_previous_enumeration(0);
+ /*
+ here we already can access PCI_DEV(bus, 0, 0) to 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
+ For ht bridge, We need to set the busn in bridge and ht_setup_chainx, and the scan_pci_bus
+ */
+ unsigned int devfn;
+ unsigned new_bus;
+ unsigned max_bus;
+
+ new_bus = (bus & 0xff); // mask out the reset_needed
+
+ if(new_bus<0x40) {
+ max_bus = 0x3f;
+ } else if (new_bus<0x80) {
+ max_bus = 0x7f;
+ } else if (new_bus<0xc0) {
+ max_bus = 0xbf;
+ } else {
+ max_bus = 0xff;
+ }
- reset_needed = 0;
- uoffs = PCI_HT_HOST_OFFS;
- next_unitid = 1;
- do {
- uint32_t id;
- uint8_t pos;
- uint16_t flags;
- uint8_t count;
- unsigned offs;
+ new_bus = bus;
- device_t dev = PCI_DEV(0, 0, 0);
- last_unitid = next_unitid;
+#if 0
+#if CONFIG_USE_INIT == 1
+ printk_debug("bus_num=%02x\r\n", bus);
+#endif
+#endif
- id = pci_read_config32(dev, PCI_VENDOR_ID);
- /* If the chain is enumerated quit */
- if (((id & 0xffff) == 0x0000) || ((id & 0xffff) == 0xffff) ||
- (((id >> 16) & 0xffff) == 0xffff) ||
- (((id >> 16) & 0xffff) == 0x0000)) {
- break;
- }
+ for (devfn = 0; devfn <= 0xff; devfn++) {
+ uint8_t hdr_type;
+ uint16_t class;
+ uint32_t buses;
+ device_t dev;
+ uint16_t cr;
+ dev = PCI_DEV((bus & 0xff), ((devfn>>3) & 0x1f), (devfn & 0x7));
+ hdr_type = pci_read_config8(dev, PCI_HEADER_TYPE);
+ class = pci_read_config16(dev, PCI_CLASS_DEVICE);
- pos = ht_lookup_slave_capability(dev);
- if (!pos) {
- print_err("HT link capability not found\r\n");
- break;
+#if 0
+#if CONFIG_USE_INIT == 1
+ if(hdr_type !=0xff ) {
+ printk_debug("dev=%02x fn=%02x hdr_type=%02x class=%04x\r\n",
+ (devfn>>3)& 0x1f, (devfn & 0x7), hdr_type, class);
}
-#if CK804_DEVN_BASE==0
- //CK804 workaround:
- // CK804 UnitID changes not use
- id = pci_read_config32(dev, PCI_VENDOR_ID);
- if(id != 0x005e10de) {
#endif
-
- /* Update the Unitid of the current device */
- flags = pci_read_config16(dev, pos + PCI_CAP_FLAGS);
- flags &= ~0x1f; /* mask out the bse Unit ID */
- flags |= next_unitid & 0x1f;
- pci_write_config16(dev, pos + PCI_CAP_FLAGS, flags);
-
- dev = PCI_DEV(0, next_unitid, 0);
-#if CK804_DEVN_BASE==0
- }
- else {
- dev = PCI_DEV(0, 0, 0);
- }
#endif
-
- /* Compute the number of unitids consumed */
- count = (flags >> 5) & 0x1f;
- next_unitid += count;
-
- /* get ht direction */
- flags = pci_read_config16(dev, pos + PCI_CAP_FLAGS); // double read ??
-
- offs = ((flags>>10) & 1) ? PCI_HT_SLAVE1_OFFS : PCI_HT_SLAVE0_OFFS;
-
- /* Setup the Hypertransport link */
- reset_needed |= ht_optimize_link(udev, upos, uoffs, dev, pos, offs);
-
-#if CK804_DEVN_BASE==0
- if(id == 0x005e10de) {
- break;
+ switch(hdr_type & 0x7f) { /* header type */
+ case PCI_HEADER_TYPE_BRIDGE:
+ if (class != PCI_CLASS_BRIDGE_PCI) goto bad;
+ /* set the bus range dev */
+
+ /* Clear all status bits and turn off memory, I/O and master enables. */
+ cr = pci_read_config16(dev, PCI_COMMAND);
+ pci_write_config16(dev, PCI_COMMAND, 0x0000);
+ pci_write_config16(dev, PCI_STATUS, 0xffff);
+
+ buses = pci_read_config32(dev, PCI_PRIMARY_BUS);
+
+ buses &= 0xff000000;
+ new_bus++;
+ buses |= (((unsigned int) (bus & 0xff) << 0) |
+ ((unsigned int) (new_bus & 0xff) << 8) |
+ ((unsigned int) max_bus << 16));
+ pci_write_config32(dev, PCI_PRIMARY_BUS, buses);
+
+ {
+ /* here we need to figure out if dev is a ht bridge
+ if it is ht bridge, we need to call ht_setup_chainx at first
+ Not verified --- yhlu
+ */
+ uint8_t upos;
+ upos = ht_lookup_host_capability(dev); // one func one ht sub
+ if (upos) { // sub ht chain
+ uint8_t busn;
+ busn = (new_bus & 0xff);
+ /* Make certain the HT bus is not enumerated */
+ ht_collapse_previous_enumeration(busn);
+ /* scan the ht chain */
+ new_bus |= (ht_setup_chainx(dev,upos,busn)<<16); // store reset_needed to upword
+ }
+ }
+
+ new_bus = scan_pci_bus(new_bus);
+ /* set real max bus num in that */
+
+ buses = (buses & 0xff00ffff) |
+ ((unsigned int) (new_bus & 0xff) << 16);
+ pci_write_config32(dev, PCI_PRIMARY_BUS, buses);
+
+ pci_write_config16(dev, PCI_COMMAND, cr);
+
+ break;
+ default:
+ bad:
+ ;
+ }
+
+ /* if this is not a multi function device,
+ * or the device is not present don't waste
+ * time probing another function.
+ * Skip to next device.
+ */
+ if ( ((devfn & 0x07) == 0x00) && ((hdr_type & 0x80) != 0x80))
+ {
+ devfn += 0x07;
}
-#endif
-
- /* Remeber the location of the last device */
- udev = dev;
- upos = pos;
- uoffs = (offs != PCI_HT_SLAVE0_OFFS) ? PCI_HT_SLAVE0_OFFS : PCI_HT_SLAVE1_OFFS;
-
- } while((last_unitid != next_unitid) && (next_unitid <= 0x1f));
- return reset_needed;
+ }
+
+ return new_bus;
}
-
+#endif
static int ht_setup_chainx(device_t udev, uint8_t upos, uint8_t bus)
{
uint8_t next_unitid, last_unitid;
@@ -328,25 +374,38 @@ static int ht_setup_chainx(device_t udev, uint8_t upos, uint8_t bus)
do {
uint32_t id;
uint8_t pos;
- uint16_t flags;
+ uint16_t flags, ctrl;
uint8_t count;
unsigned offs;
-
+
+ /* Wait until the link initialization is complete */
+ do {
+ ctrl = pci_read_config16(udev, upos + LINK_CTRL(uoffs));
+ /* Is this the end of the hypertransport chain? */
+ if (ctrl & (1 << 6)) {
+ break;
+ }
+ /* Has the link failed */
+ if (ctrl & (1 << 4)) {
+ break;
+ }
+ } while((ctrl & (1 << 5)) == 0);
+
device_t dev = PCI_DEV(bus, 0, 0);
last_unitid = next_unitid;
id = pci_read_config32(dev, PCI_VENDOR_ID);
/* If the chain is enumerated quit */
- if (((id & 0xffff) == 0x0000) || ((id & 0xffff) == 0xffff) ||
- (((id >> 16) & 0xffff) == 0xffff) ||
- (((id >> 16) & 0xffff) == 0x0000)) {
+ if ( (id == 0xffffffff) || (id == 0x00000000) ||
+ (id == 0x0000ffff) || (id == 0xffff0000))
+ {
break;
}
pos = ht_lookup_slave_capability(dev);
if (!pos) {
- print_err(" HT link capability not found\r\n");
+ print_err("HT link capability not found\r\n");
break;
}
@@ -363,6 +422,7 @@ static int ht_setup_chainx(device_t udev, uint8_t upos, uint8_t bus)
flags |= next_unitid & 0x1f;
pci_write_config16(dev, pos + PCI_CAP_FLAGS, flags);
+ /* Note the change in device number */
dev = PCI_DEV(bus, next_unitid, 0);
#if CK804_DEVN_BASE==0
}
@@ -375,9 +435,11 @@ static int ht_setup_chainx(device_t udev, uint8_t upos, uint8_t bus)
count = (flags >> 5) & 0x1f;
next_unitid += count;
- /* get ht direction */
- flags = pci_read_config16(dev, pos + PCI_CAP_FLAGS); // double read ??
-
+ /* Find which side of the ht link we are on,
+ * by reading which direction our last write to PCI_CAP_FLAGS
+ * came from.
+ */
+ flags = pci_read_config16(dev, pos + PCI_CAP_FLAGS);
offs = ((flags>>10) & 1) ? PCI_HT_SLAVE1_OFFS : PCI_HT_SLAVE0_OFFS;
/* Setup the Hypertransport link */
@@ -395,9 +457,23 @@ static int ht_setup_chainx(device_t udev, uint8_t upos, uint8_t bus)
uoffs = ( offs != PCI_HT_SLAVE0_OFFS ) ? PCI_HT_SLAVE0_OFFS : PCI_HT_SLAVE1_OFFS;
} while((last_unitid != next_unitid) && (next_unitid <= 0x1f));
+
return reset_needed;
}
+static int ht_setup_chain(device_t udev, unsigned upos)
+{
+ /* 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
+ * non Coherent links the appropriate bus registers for the
+ * links needs to be programed to point at bus 0.
+ */
+
+ /* Make certain the HT bus is not enumerated */
+ ht_collapse_previous_enumeration(0);
+
+ return ht_setup_chainx(udev, upos, 0);
+}
static int optimize_link_read_pointer(uint8_t node, uint8_t linkn, uint8_t linkt, uint8_t val)
{
uint32_t dword, dword_old;
@@ -444,7 +520,7 @@ static int optimize_link_in_coherent(uint8_t ht_c_num)
reg = pci_read_config32( PCI_DEV(busn, 1, 0), PCI_VENDOR_ID);
if ( (reg & 0xffff) == PCI_VENDOR_ID_AMD) {
val = 0x25;
- } else if ( (reg & 0xffff) == 0x10de ) {
+ } else if ( (reg & 0xffff) == PCI_VENDOR_ID_NVIDIA ) {
val = 0x25;//???
} else {
continue;
@@ -477,6 +553,9 @@ static int ht_setup_chains(uint8_t ht_c_num)
unsigned regpos;
uint32_t dword;
uint8_t busn;
+ #if (USE_DCACHE_RAM == 1) && (K8_SCAN_PCI_BUS == 1)
+ unsigned bus;
+ #endif
reg = pci_read_config32(PCI_DEV(0,0x18,1), 0xe0 + i * 4);
@@ -498,7 +577,11 @@ static int ht_setup_chains(uint8_t ht_c_num)
reset_needed |= ht_setup_chainx(udev,upos,busn);
-
+ #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 */
+ bus = busn; // we need 32 bit
+ reset_needed |= (scan_pci_bus(bus)>>16); // take out reset_needed that stored in upword
+ #endif
}
reset_needed |= optimize_link_in_coherent(ht_c_num);
@@ -506,6 +589,10 @@ static int ht_setup_chains(uint8_t ht_c_num)
return reset_needed;
}
+#ifndef K8_ALLOCATE_IO_RANGE
+ #define K8_ALLOCATE_IO_RANGE 0
+#endif
+
static int ht_setup_chains_x(void)
{
uint8_t nodeid;
@@ -514,18 +601,34 @@ static int ht_setup_chains_x(void)
uint8_t next_busn;
uint8_t ht_c_num;
uint8_t nodes;
+#if K8_ALLOCATE_IO_RANGE == 1
+ unsigned next_io_base;
+#endif
/* read PCI_DEV(0,0x18,0) 0x64 bit [8:9] to find out SbLink m */
reg = pci_read_config32(PCI_DEV(0, 0x18, 0), 0x64);
- /* update PCI_DEV(0, 0x18, 1) 0xe0 to 0x05000m03, and next_busn=5+1 */
+ /* update PCI_DEV(0, 0x18, 1) 0xe0 to 0x05000m03, and next_busn=0x3f+1 */
print_linkn_in("SBLink=", ((reg>>8) & 3) );
- tempreg = 3 | ( 0<<4) | (((reg>>8) & 3)<<8) | (0<<16)| (5<<24);
+ tempreg = 3 | ( 0<<4) | (((reg>>8) & 3)<<8) | (0<<16)| (0x3f<<24);
pci_write_config32(PCI_DEV(0, 0x18, 1), 0xe0, tempreg);
- next_busn=5+1; /* 0 will be used ht chain with SB we need to keep SB in bus0 in auto stage*/
+ next_busn=0x3f+1; /* 0 will be used ht chain with SB we need to keep SB in bus0 in auto stage*/
+
+#if K8_ALLOCATE_IO_RANGE == 1
+ /* io range allocation */
+ tempreg = 0 | (((reg>>8) & 0x3) << 4 )| (0x3<<12); //limit
+ pci_write_config32(PCI_DEV(0, 0x18, 1), 0xC4, tempreg);
+ tempreg = 3 | ( 3<<4) | (0<<12); //base
+ pci_write_config32(PCI_DEV(0, 0x18, 1), 0xC0, tempreg);
+ next_io_base = 0x3+0x1;
+#endif
+
/* clean others */
for(ht_c_num=1;ht_c_num<4; ht_c_num++) {
pci_write_config32(PCI_DEV(0, 0x18, 1), 0xe0 + ht_c_num * 4, 0);
+ /* io range allocation */
+ pci_write_config32(PCI_DEV(0, 0x18, 1), 0xc4 + ht_c_num * 8, 0);
+ pci_write_config32(PCI_DEV(0, 0x18, 1), 0xc0 + ht_c_num * 8, 0);
}
nodes = ((pci_read_config32(PCI_DEV(0, 0x18, 0), 0x60)>>4) & 7) + 1;
@@ -548,13 +651,23 @@ static int ht_setup_chains_x(void)
break;
}
}
- if(ht_c_num == 4) break; /*used up onle 4 non conherent allowed*/
+ if(ht_c_num == 4) break; /*used up only 4 non conherent allowed*/
/*update to 0xe0...*/
if((reg & 0xf) == 3) continue; /*SbLink so don't touch it */
print_linkn_in("\tbusn=", next_busn);
- tempreg |= (next_busn<<16)|((next_busn+5)<<24);
+ tempreg |= (next_busn<<16)|((next_busn+0x3f)<<24);
pci_write_config32(PCI_DEV(0, 0x18, 1), 0xe0 + ht_c_num * 4, tempreg);
- next_busn+=5+1;
+ next_busn+=0x3f+1;
+
+#if K8_ALLOCATE_IO_RANGE == 1
+ /* 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);
+ tempreg = 3 | ( 3<<4) | (next_io_base<<12); //base
+ pci_write_config32(PCI_DEV(0, 0x18, 1), 0xC0 + ht_c_num * 8, tempreg);
+ next_io_base += 0x3+0x1;
+#endif
+
}
}
/*update 0xe0, 0xe4, 0xe8, 0xec from PCI_DEV(0, 0x18,1) to PCI_DEV(0, 0x19,1) to PCI_DEV(0, 0x1f,1);*/
@@ -568,8 +681,23 @@ static int ht_setup_chains_x(void)
regpos = 0xe0 + i * 4;
reg = pci_read_config32(PCI_DEV(0, 0x18, 1), regpos);
pci_write_config32(dev, regpos, reg);
+ }
+#if K8_ALLOCATE_IO_RANGE == 1
+ /* io range allocation */
+ for(i = 0; i< 4; i++) {
+ unsigned regpos;
+ regpos = 0xc4 + i * 8;
+ reg = pci_read_config32(PCI_DEV(0, 0x18, 1), regpos);
+ pci_write_config32(dev, regpos, reg);
}
+ for(i = 0; i< 4; i++) {
+ unsigned regpos;
+ regpos = 0xc0 + i * 8;
+ reg = pci_read_config32(PCI_DEV(0, 0x18, 1), regpos);
+ pci_write_config32(dev, regpos, reg);
+ }
+#endif
}
/* recount ht_c_num*/
generated by cgit v1.2.3 (git 2.39.1) at 2024-08-22 08:03:37 +0000