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Diffstat (limited to 'src/cpu/amd/model_10xxx/fidvid.c')
-rw-r--r--src/cpu/amd/model_10xxx/fidvid.c1676
1 files changed, 838 insertions, 838 deletions
diff --git a/src/cpu/amd/model_10xxx/fidvid.c b/src/cpu/amd/model_10xxx/fidvid.c
index 7007d4cf8f..6104f9c3f6 100644
--- a/src/cpu/amd/model_10xxx/fidvid.c
+++ b/src/cpu/amd/model_10xxx/fidvid.c
@@ -1,838 +1,838 @@
-/*
- * This file is part of the coreboot project.
- *
- * Copyright (C) 2007 Advanced Micro Devices, Inc.
- *
- * 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; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-#if SET_FIDVID == 1
-#include <northbridge/amd/amdht/AsPsDefs.h>
-
-#define SET_FIDVID_DEBUG 1
-
-// if we are tight of CAR stack, disable it
-#define SET_FIDVID_STORE_AP_APICID_AT_FIRST 1
-
-static inline void print_debug_fv(const char *str, u32 val)
-{
-#if SET_FIDVID_DEBUG == 1
- printk(BIOS_DEBUG, "%s%x\n", str, val);
-#endif
-}
-
-static inline void print_debug_fv_8(const char *str, u8 val)
-{
-#if SET_FIDVID_DEBUG == 1
- printk(BIOS_DEBUG, "%s%02x\n", str, val);
-#endif
-}
-
-static inline void print_debug_fv_64(const char *str, u32 val, u32 val2)
-{
-#if SET_FIDVID_DEBUG == 1
- printk(BIOS_DEBUG, "%s%x%x\n", str, val, val2);
-#endif
-}
-
-struct fidvid_st {
- u32 common_fid;
-};
-
-static void enable_fid_change(u8 fid)
-{
- u32 dword;
- u32 nodes;
- device_t dev;
- int i;
-
- nodes = get_nodes();
-
- for (i = 0; i < nodes; i++) {
- dev = NODE_PCI(i, 3);
- dword = pci_read_config32(dev, 0xd4);
- dword &= ~0x1F;
- dword |= (u32) fid & 0x1F;
- dword |= 1 << 5; // enable
- pci_write_config32(dev, 0xd4, dword);
- printk(BIOS_DEBUG, "FID Change Node:%02x, F3xD4: %08x \n", i,
- dword);
- }
-}
-
-static void recalculateVsSlamTimeSettingOnCorePre(device_t dev)
-{
- u8 pviModeFlag;
- u8 highVoltageVid, lowVoltageVid, bValue;
- u16 minimumSlamTime;
- u16 vSlamTimes[7] = { 1000, 2000, 3000, 4000, 6000, 10000, 20000 }; /* Reg settings scaled by 100 */
- u32 dtemp;
- msr_t msr;
-
- /* This function calculates the VsSlamTime using the range of possible
- * voltages instead of a hardcoded 200us.
- * Note:This function is called from setFidVidRegs and setUserPs after
- * programming a custom Pstate.
- */
-
- /* Calculate Slam Time
- * Vslam = 0.4us/mV * Vp0 - (lowest out of Vpmin or Valt)
- * In our case, we will scale the values by 100 to avoid
- * decimals.
- */
-
- /* Determine if this is a PVI or SVI system */
- dtemp = pci_read_config32(dev, 0xA0);
-
- if (dtemp & PVI_MODE)
- pviModeFlag = 1;
- else
- pviModeFlag = 0;
-
- /* Get P0's voltage */
- msr = rdmsr(0xC0010064);
- highVoltageVid = (u8) ((msr.lo >> PS_CPU_VID_SHFT) & 0x7F);
-
- /* If SVI, we only care about CPU VID.
- * If PVI, determine the higher voltage b/t NB and CPU
- */
- if (pviModeFlag) {
- bValue = (u8) ((msr.lo >> PS_NB_VID_SHFT) & 0x7F);
- if (highVoltageVid > bValue)
- highVoltageVid = bValue;
- }
-
- /* Get Pmin's index */
- msr = rdmsr(0xC0010061);
- bValue = (u8) ((msr.lo >> PS_CUR_LIM_SHFT) & BIT_MASK_3);
-
- /* Get Pmin's VID */
- msr = rdmsr(0xC0010064 + bValue);
- lowVoltageVid = (u8) ((msr.lo >> PS_CPU_VID_SHFT) & 0x7F);
-
- /* If SVI, we only care about CPU VID.
- * If PVI, determine the higher voltage b/t NB and CPU
- */
- if (pviModeFlag) {
- bValue = (u8) ((msr.lo >> PS_NB_VID_SHFT) & 0x7F);
- if (lowVoltageVid > bValue)
- lowVoltageVid = bValue;
- }
-
- /* Get AltVID */
- dtemp = pci_read_config32(dev, 0xDC);
- bValue = (u8) (dtemp & BIT_MASK_7);
-
- /* Use the VID with the lowest voltage (higher VID) */
- if (lowVoltageVid < bValue)
- lowVoltageVid = bValue;
-
- /* If Vids are 7Dh - 7Fh, force 7Ch to keep calculations linear */
- if (lowVoltageVid > 0x7C) {
- lowVoltageVid = 0x7C;
- if (highVoltageVid > 0x7C)
- highVoltageVid = 0x7C;
- }
-
- bValue = (u8) (lowVoltageVid - highVoltageVid);
-
- /* Each Vid increment is 12.5 mV. The minimum slam time is:
- * vidCodeDelta * 12.5mV * 0.4us/mV
- * Scale by 100 to avoid decimals.
- */
- minimumSlamTime = bValue * (125 * 4);
-
- /* Now round up to nearest register setting.
- * Note that if we don't find a value, we
- * will fall through to a value of 7
- */
- for (bValue = 0; bValue < 7; bValue++) {
- if (minimumSlamTime <= vSlamTimes[bValue])
- break;
- }
-
- /* Apply the value */
- dtemp = pci_read_config32(dev, 0xD8);
- dtemp &= VSSLAM_MASK;
- dtemp |= bValue;
- pci_write_config32(dev, 0xd8, dtemp);
-}
-
-static void prep_fid_change(void)
-{
- u32 dword, dtemp;
- u32 nodes;
- device_t dev;
- int i;
-
- /* This needs to be run before any Pstate changes are requested */
-
- nodes = get_nodes();
-
- for (i = 0; i < nodes; i++) {
- printk(BIOS_DEBUG, "Prep FID/VID Node:%02x \n", i);
- dev = NODE_PCI(i, 3);
-
- dword = pci_read_config32(dev, 0xd8);
- dword &= VSRAMP_MASK;
- dword |= VSRAMP_VALUE;
- pci_write_config32(dev, 0xd8, dword);
-
- /* Figure out the value for VsSlamTime and program it */
- recalculateVsSlamTimeSettingOnCorePre(dev);
-
- /* Program fields in Clock Power/Control register0 (F3xD4) */
- /* set F3xD4 Clock Power/Timing Control 0 Register
- * NbClkDidApplyAll=1b
- * NbClkDid=100b
- * PowerStepUp= "platform dependent"
- * PowerStepDown= "platform dependent"
- * LinkPllLink=01b
- * ClkRampHystSel=HW default
- */
- /* check platform type */
- if (!(get_platform_type() & AMD_PTYPE_SVR)) {
- /* For non-server platform
- * PowerStepUp=01000b - 50nS
- * PowerStepDown=01000b - 50ns
- */
- dword = pci_read_config32(dev, 0xd4);
- dword &= CPTC0_MASK;
- dword |= NB_CLKDID_ALL | NB_CLKDID | PW_STP_UP50 | PW_STP_DN50 | LNK_PLL_LOCK; /* per BKDG */
- pci_write_config32(dev, 0xd4, dword);
- } else {
- dword = pci_read_config32(dev, 0xd4);
- dword &= CPTC0_MASK;
- /* get number of cores for PowerStepUp & PowerStepDown in server
- 1 core - 400nS - 0000b
- 2 cores - 200nS - 0010b
- 3 cores - 133nS -> 100nS - 0011b
- 4 cores - 100nS - 0011b
- */
- switch (get_core_num_in_bsp(i)) {
- case 0:
- dword |= PW_STP_UP400 | PW_STP_DN400;
- break;
- case 1:
- case 2:
- dword |= PW_STP_UP200 | PW_STP_DN200;
- break;
- case 3:
- dword |= PW_STP_UP100 | PW_STP_DN100;
- break;
- default:
- dword |= PW_STP_UP100 | PW_STP_DN100;
- break;
- }
- dword |= NB_CLKDID_ALL | NB_CLKDID | LNK_PLL_LOCK;
- pci_write_config32(dev, 0xd4, dword);
- }
-
- /* check PVI/SVI */
- dword = pci_read_config32(dev, 0xA0);
- if (dword & PVI_MODE) { /* PVI */
- /* set slamVidMode to 0 for PVI */
- dword &= VID_SLAM_OFF | PLLLOCK_OFF;
- dword |= PLLLOCK_DFT_L;
- pci_write_config32(dev, 0xA0, dword);
- } else { /* SVI */
- /* set slamVidMode to 1 for SVI */
- dword &= PLLLOCK_OFF;
- dword |= PLLLOCK_DFT_L | VID_SLAM_ON;
- pci_write_config32(dev, 0xA0, dword);
-
- dtemp = dword;
-
- /* Program F3xD8[PwrPlanes] according F3xA0[DulaVdd] */
- dword = pci_read_config32(dev, 0xD8);
-
- if (dtemp & DUAL_VDD_BIT)
- dword |= PWR_PLN_ON;
- else
- dword &= PWR_PLN_OFF;
- pci_write_config32(dev, 0xD8, dword);
- }
-
- /* Note the following settings are additional from the ported
- * function setFidVidRegs()
- */
- dword = pci_read_config32(dev, 0xDc);
- dword |= 0x5 << 12; /* NbsynPtrAdj set to 0x5 per BKDG (needs reset) */
- pci_write_config32(dev, 0xdc, dword);
-
- /* Rev B settings - FIXME: support other revs. */
- dword = 0xA0E641E6;
- pci_write_config32(dev, 0x84, dword);
-
- dword = 0xE600A681;
- pci_write_config32(dev, 0x80, dword);
-
- dword = pci_read_config32(dev, 0x80);
- printk(BIOS_DEBUG, " F3x80: %08x \n", dword);
- dword = pci_read_config32(dev, 0x84);
- printk(BIOS_DEBUG, " F3x84: %08x \n", dword);
- dword = pci_read_config32(dev, 0xD4);
- printk(BIOS_DEBUG, " F3xD4: %08x \n", dword);
- dword = pci_read_config32(dev, 0xD8);
- printk(BIOS_DEBUG, " F3xD8: %08x \n", dword);
- dword = pci_read_config32(dev, 0xDC);
- printk(BIOS_DEBUG, " F3xDC: %08x \n", dword);
-
-
- }
-}
-
-
-static void UpdateSinglePlaneNbVid(void)
-{
- u32 nbVid, cpuVid;
- u8 i;
- msr_t msr;
-
- /* copy higher voltage (lower VID) of NBVID & CPUVID to both */
- for (i = 0; i < 5; i++) {
- msr = rdmsr(PS_REG_BASE + i);
- nbVid = (msr.lo & PS_CPU_VID_M_ON) >> PS_CPU_VID_SHFT;
- cpuVid = (msr.lo & PS_NB_VID_M_ON) >> PS_NB_VID_SHFT;
-
- if (nbVid != cpuVid) {
- if (nbVid > cpuVid)
- nbVid = cpuVid;
-
- msr.lo = msr.lo & PS_BOTH_VID_OFF;
- msr.lo = msr.lo | (u32) ((nbVid) << PS_NB_VID_SHFT);
- msr.lo = msr.lo | (u32) ((nbVid) << PS_CPU_VID_SHFT);
- wrmsr(PS_REG_BASE + i, msr);
- }
- }
-}
-
-static void fixPsNbVidBeforeWR(u32 newNbVid, u32 coreid)
-{
- msr_t msr;
- u8 startup_pstate;
-
- /* This function sets NbVid before the warm reset.
- * Get StartupPstate from MSRC001_0071.
- * Read Pstate register pionted by [StartupPstate].
- * and copy its content to P0 and P1 registers.
- * Copy newNbVid to P0[NbVid].
- * transition to P1 on all cores,
- * then transition to P0 on core 0.
- * Wait for MSRC001_0063[CurPstate] = 000b on core 0.
- */
-
- msr = rdmsr(0xc0010071);
- startup_pstate = (msr.hi >> (32 - 32)) & 0x07;
-
- /* Copy startup pstate to P1 and P0 MSRs. Set the maxvid for this node in P0.
- * Then transition to P1 for corex and P0 for core0.
- * These setting will be cleared by the warm reset
- */
- msr = rdmsr(0xC0010064 + startup_pstate);
- wrmsr(0xC0010065, msr);
- wrmsr(0xC0010064, msr);
-
- msr.lo &= ~0xFE000000; // clear nbvid
- msr.lo |= newNbVid << 25;
- wrmsr(0xC0010064, msr);
-
- UpdateSinglePlaneNbVid();
-
- // Transition to P1 for all APs and P0 for core0.
- msr = rdmsr(0xC0010062);
- msr.lo = (msr.lo & ~0x07) | 1;
- wrmsr(0xC0010062, msr);
-
- // Wait for P1 to set.
- do {
- msr = rdmsr(0xC0010063);
- } while (msr.lo != 1);
-
- if (coreid == 0) {
- msr.lo = msr.lo & ~0x07;
- wrmsr(0xC0010062, msr);
- // Wait for P0 to set.
- do {
- msr = rdmsr(0xC0010063);
- } while (msr.lo != 0);
- }
-}
-
-static void coreDelay(void)
-{
- u32 saved;
- u32 hi, lo, msr;
- u32 cycles;
-
- /* delay ~40us
- This seems like a hack to me...
- It would be nice to have a central delay function. */
-
- cycles = 8000 << 3; /* x8 (number of 1.25ns ticks) */
-
- msr = 0x10; /* TSC */
- _RDMSR(msr, &lo, &hi);
- saved = lo;
- do {
- _RDMSR(msr, &lo, &hi);
- } while (lo - saved < cycles);
-}
-
-static void transitionVid(u32 targetVid, u8 dev, u8 isNb)
-{
- u32 currentVid, dtemp;
- msr_t msr;
- u8 vsTimecode;
- u16 timeTable[8] = { 10, 20, 30, 40, 60, 100, 200, 500 };
- int vsTime;
-
- /* This function steps or slam the Nb VID to the target VID.
- * It uses VSRampTime for [SlamVidMode]=0 ([PviMode]=1)
- * or VSSlamTime for [SlamVidMode]=1 ([PviMode]=0)to time period.
- */
-
- /* get the current VID */
- msr = rdmsr(0xC0010071);
- if (isNb)
- currentVid = (msr.lo >> NB_VID_POS) & BIT_MASK_7;
- else
- currentVid = (msr.lo >> CPU_VID_POS) & BIT_MASK_7;
-
- /* Read MSRC001_0070 COFVID Control Register */
- msr = rdmsr(0xC0010070);
-
- /* check PVI/SPI */
- dtemp = pci_read_config32(dev, 0xA0);
- if (dtemp & PVI_MODE) { /* PVI, step VID */
- if (currentVid < targetVid) {
- while (currentVid < targetVid) {
- currentVid++;
- if (isNb)
- msr.lo = (msr.lo & NB_VID_MASK_OFF) | (currentVid << NB_VID_POS);
- else
- msr.lo = (msr.lo & CPU_VID_MASK_OFF) | (currentVid << CPU_VID_POS);
- wrmsr(0xC0010070, msr);
-
- /* read F3xD8[VSRampTime] */
- dtemp = pci_read_config32(dev, 0xD8);
- vsTimecode = (u8) ((dtemp >> VS_RAMP_T) & 0x7);
- vsTime = (int)timeTable[vsTimecode];
- do {
- coreDelay();
- vsTime -= 40;
- } while (vsTime > 0);
- }
- } else if (currentVid > targetVid) {
- while (currentVid > targetVid) {
- currentVid--;
- if (isNb)
- msr.lo = (msr.lo & NB_VID_MASK_OFF) | (currentVid << NB_VID_POS);
- else
- msr.lo = (msr.lo & CPU_VID_MASK_OFF) | (currentVid << CPU_VID_POS);
- wrmsr(0xC0010070, msr);
-
- /* read F3xD8[VSRampTime] */
- dtemp = pci_read_config32(dev, 0xD8);
- vsTimecode = (u8) ((dtemp >> VS_RAMP_T) & 0x7);
- vsTime = (int)timeTable[vsTimecode];
- do {
- coreDelay();
- vsTime -= 40;
- } while (vsTime > 0);
- }
- }
- } else { /* SVI, slam VID */
- if (isNb)
- msr.lo = (msr.lo & NB_VID_MASK_OFF) | (targetVid << NB_VID_POS);
- else
- msr.lo = (msr.lo & CPU_VID_MASK_OFF) | (targetVid << CPU_VID_POS);
- wrmsr(0xC0010070, msr);
-
- /* read F3xD8[VSRampTime] */
- dtemp = pci_read_config32(dev, 0xD8);
- vsTimecode = (u8) ((dtemp >> VS_RAMP_T) & 0x7);
- vsTime = (int)timeTable[vsTimecode];
- do {
- coreDelay();
- vsTime -= 40;
- } while (vsTime > 0);
- }
-}
-
-
-static void init_fidvid_ap(u32 bsp_apicid, u32 apicid, u32 nodeid, u32 coreid)
-{
- device_t dev;
- u32 vid_max;
- u32 fid_max;
- u8 nb_cof_vid_update;
- u8 pvimode;
- u32 reg1fc;
- u32 send;
- u8 nodes;
- u8 i;
-
- printk(BIOS_DEBUG, "FIDVID on AP: %02x\n", apicid);
-
- /* Steps 1-6 of BIOS NB COF and VID Configuration
- * for SVI and Single-Plane PVI Systems.
- */
-
- /* If any node has nb_cof_vid_update set all nodes need an update. */
- nodes = get_nodes();
- nb_cof_vid_update = 0;
- for (i = 0; i < nodes; i++) {
- if (pci_read_config32(NODE_PCI(i, 3), 0x1FC) & 1) {
- nb_cof_vid_update = 1;
- break;
- }
- }
-
- dev = NODE_PCI(nodeid, 3);
- pvimode = (pci_read_config32(dev, 0xA0) >> 8) & 1;
- reg1fc = pci_read_config32(dev, 0x1FC);
-
- if (nb_cof_vid_update) {
- if (pvimode) {
- vid_max = (reg1fc >> 7) & 0x7F;
- fid_max = (reg1fc >> 2) & 0x1F;
-
- /* write newNbVid to P-state Reg's NbVid always if NbVidUpdatedAll=1 */
- fixPsNbVidBeforeWR(vid_max, coreid);
- } else { /* SVI */
- vid_max = ((reg1fc >> 7) & 0x7F) - ((reg1fc >> 17) & 0x1F);
- fid_max = ((reg1fc >> 2) & 0x1F) + ((reg1fc >> 14) & 0x7);
- transitionVid(vid_max, dev, IS_NB);
- }
-
- /* fid setup is handled by the BSP at the end. */
-
- } else { /* ! nb_cof_vid_update */
- /* Use max values */
- if (pvimode)
- UpdateSinglePlaneNbVid();
- }
-
- send = (nb_cof_vid_update << 16) | (fid_max << 8);
- send |= (apicid << 24); // ap apicid
-
- // Send signal to BSP about this AP max fid
- // This also indicates this AP is ready for warm reset (if required).
- lapic_write(LAPIC_MSG_REG, send | 1);
-}
-
-static u32 calc_common_fid(u32 fid_packed, u32 fid_packed_new)
-{
- u32 fidmax;
- u32 fidmax_new;
-
- fidmax = (fid_packed >> 8) & 0xFF;
-
- fidmax_new = (fid_packed_new >> 8) & 0xFF;
-
- if (fidmax > fidmax_new) {
- fidmax = fidmax_new;
- }
-
- fid_packed &= 0xFF << 16;
- fid_packed |= (fidmax << 8);
- fid_packed |= fid_packed_new & (0xFF << 16); // set nb_cof_vid_update
-
- return fid_packed;
-}
-
-static void init_fidvid_bsp_stage1(u32 ap_apicid, void *gp)
-{
- u32 readback = 0;
- u32 timeout = 1;
-
- struct fidvid_st *fvp = gp;
- int loop;
-
- print_debug_fv("Wait for AP stage 1: ap_apicid = ", ap_apicid);
-
- loop = 100000;
- while (--loop > 0) {
- if (lapic_remote_read(ap_apicid, LAPIC_MSG_REG, &readback) != 0)
- continue;
- if ((readback & 0x3f) == 1) {
- timeout = 0;
- break; /* target ap is in stage 1 */
- }
- }
-
- if (timeout) {
- printk(BIOS_DEBUG, "%s: timed out reading from ap %02x\n",
- __func__, ap_apicid);
- return;
- }
-
- print_debug_fv("\treadback = ", readback);
-
- fvp->common_fid = calc_common_fid(fvp->common_fid, readback);
-
- print_debug_fv("\tcommon_fid(packed) = ", fvp->common_fid);
-
-}
-
-static void updateSviPsNbVidAfterWR(u32 newNbVid)
-{
- msr_t msr;
- u8 i;
-
- /* This function copies newNbVid to NbVid bits in P-state Registers[4:0]
- * for SVI mode.
- */
-
- for (i = 0; i < 5; i++) {
- msr = rdmsr(0xC0010064 + i);
- if ((msr.hi >> 31) & 1) { /* PstateEn? */
- msr.lo &= ~(0x7F << 25);
- msr.lo |= (newNbVid & 0x7F) << 25;
- wrmsr(0xC0010064 + i, msr);
- }
- }
-}
-
-
-static void fixPsNbVidAfterWR(u32 newNbVid, u8 NbVidUpdatedAll)
-{
- msr_t msr;
- u8 i;
- u8 StartupPstate;
-
- /* This function copies newNbVid to NbVid bits in P-state
- * Registers[4:0] if its NbDid bit=0 and PstateEn bit =1 in case of
- * NbVidUpdatedAll =0 or copies copies newNbVid to NbVid bits in
- * P-state Registers[4:0] if its and PstateEn bit =1 in case of
- * NbVidUpdatedAll=1. Then transition to StartPstate.
- */
-
- /* write newNbVid to P-state Reg's NbVid if its NbDid=0 */
- for (i = 0; i < 5; i++) {
- msr = rdmsr(0xC0010064 + i);
- /* NbDid (bit 22 of P-state Reg) == 0 or NbVidUpdatedAll = 1 */
- if ((((msr.lo >> 22) & 1) == 0) || NbVidUpdatedAll) {
- msr.lo &= ~(0x7F << 25);
- msr.lo |= (newNbVid & 0x7F) << 25;
- wrmsr(0xC0010064 + i, msr);
- }
- }
-
- UpdateSinglePlaneNbVid();
-
- /* For each core in the system, transition all cores to StartupPstate */
- msr = rdmsr(0xC0010071);
- StartupPstate = msr.hi & 0x07;
- msr = rdmsr(0xC0010062);
- msr.lo = StartupPstate;
- wrmsr(0xC0010062, msr);
-
- /* Wait for StartupPstate to set. */
- do {
- msr = rdmsr(0xC0010063);
- } while (msr.lo != StartupPstate);
-}
-
-static void set_p0(void)
-{
- msr_t msr;
-
- // Transition P0 for calling core.
- msr = rdmsr(0xC0010062);
- msr.lo = (msr.lo & ~0x07);
- wrmsr(0xC0010062, msr);
-
- /* Wait for P0 to set. */
- do {
- msr = rdmsr(0xC0010063);
- } while (msr.lo != 0);
-}
-
-static void finalPstateChange(void)
-{
- /* Enble P0 on all cores for best performance.
- * Linux can slow them down later if need be.
- * It is safe since they will be in C1 halt
- * most of the time anyway.
- */
- set_p0();
-}
-
-static void init_fidvid_stage2(u32 apicid, u32 nodeid)
-{
- msr_t msr;
- device_t dev;
- u32 reg1fc;
- u32 dtemp;
- u32 nbvid;
- u8 nb_cof_vid_update;
- u8 nodes;
- u8 NbVidUpdateAll;
- u8 i;
- u8 pvimode;
-
- /* After warm reset finish the fid/vid setup for all cores. */
-
- /* If any node has nb_cof_vid_update set all nodes need an update. */
- nodes = get_nodes();
- nb_cof_vid_update = 0;
- for (i = 0; i < nodes; i++) {
- if (pci_read_config32(NODE_PCI(i, 3), 0x1FC) & 1) {
- nb_cof_vid_update = 1;
- break;
- }
- }
-
- dev = NODE_PCI(nodeid, 3);
- pvimode = (pci_read_config32(dev, 0xA0) >> 8) & 1;
- reg1fc = pci_read_config32(dev, 0x1FC);
- nbvid = (reg1fc >> 7) & 0x7F;
- NbVidUpdateAll = (reg1fc >> 1) & 1;
-
- if (nb_cof_vid_update) {
- if (pvimode) {
- nbvid = (reg1fc >> 7) & 0x7F;
- /* write newNbVid to P-state Reg's NbVid if its NbDid=0 */
- fixPsNbVidAfterWR(nbvid, NbVidUpdateAll);
- } else { /* SVI */
- nbvid = ((reg1fc >> 7) & 0x7F) - ((reg1fc >> 17) & 0x1F);
- updateSviPsNbVidAfterWR(nbvid);
- }
- } else { /* !nb_cof_vid_update */
- if (pvimode)
- UpdateSinglePlaneNbVid();
- }
- dtemp = pci_read_config32(dev, 0xA0);
- dtemp &= PLLLOCK_OFF;
- dtemp |= PLLLOCK_DFT_L;
- pci_write_config32(dev, 0xA0, dtemp);
-
- finalPstateChange();
-
- /* Set TSC to tick at the P0 ndfid rate */
- msr = rdmsr(HWCR);
- msr.lo |= 1 << 24;
- wrmsr(HWCR, msr);
-}
-
-
-#if SET_FIDVID_STORE_AP_APICID_AT_FIRST == 1
-struct ap_apicid_st {
- u32 num;
- // it could use 256 bytes for 64 node quad core system
- u8 apicid[NODE_NUMS * 4];
-};
-
-static void store_ap_apicid(unsigned ap_apicid, void *gp)
-{
- struct ap_apicid_st *p = gp;
-
- p->apicid[p->num++] = ap_apicid;
-
-}
-#endif
-
-
-static int init_fidvid_bsp(u32 bsp_apicid, u32 nodes)
-{
-#if SET_FIDVID_STORE_AP_APICID_AT_FIRST == 1
- struct ap_apicid_st ap_apicidx;
- u32 i;
-#endif
- struct fidvid_st fv;
- device_t dev;
- u32 vid_max;
- u32 fid_max=0;
- u8 nb_cof_vid_update;
- u32 reg1fc;
- u8 pvimode;
-
- printk(BIOS_DEBUG, "FIDVID on BSP, APIC_id: %02x\n", bsp_apicid);
- /* FIXME: The first half of this function is nearly the same as
- * init_fidvid_bsp() and the code could be combined.
- */
-
- /* Steps 1-6 of BIOS NB COF and VID Configuration
- * for SVI and Single-Plane PVI Systems.
- */
-
- /* If any node has nb_cof_vid_update set all nodes need an update. */
- nb_cof_vid_update = 0;
- for (i = 0; i < nodes; i++) {
- if (pci_read_config32(NODE_PCI(i, 3), 0x1FC) & 1) {
- nb_cof_vid_update = 1;
- break;
- }
- }
-
- dev = NODE_PCI(0, 3);
- pvimode = (pci_read_config32(dev, 0xA0) >> 8) & 1;
- reg1fc = pci_read_config32(dev, 0x1FC);
-
- if (nb_cof_vid_update) {
- if (pvimode) {
- vid_max = (reg1fc >> 7) & 0x7F;
- fid_max = (reg1fc >> 2) & 0x1F;
-
- /* write newNbVid to P-state Reg's NbVid always if NbVidUpdatedAll=1 */
- fixPsNbVidBeforeWR(vid_max, 0);
- } else { /* SVI */
- vid_max = ((reg1fc >> 7) & 0x7F) - ((reg1fc >> 17) & 0x1F);
- fid_max = ((reg1fc >> 2) & 0x1F) + ((reg1fc >> 14) & 0x7);
- transitionVid(vid_max, dev, IS_NB);
- }
-
- /* fid setup is handled by the BSP at the end. */
-
- } else { /* ! nb_cof_vid_update */
- /* Use max values */
- if (pvimode)
- UpdateSinglePlaneNbVid();
- }
-
- fv.common_fid = (nb_cof_vid_update << 16) | (fid_max << 8);
- print_debug_fv("BSP fid = ", fv.common_fid);
-
-#if SET_FIDVID_STORE_AP_APICID_AT_FIRST == 1 && SET_FIDVID_CORE0_ONLY == 0
- /* For all APs (We know the APIC ID of all APs even when the APIC ID
- is lifted) remote read from AP LAPIC_MSG_REG about max fid.
- Then calculate the common max fid that can be used for all
- APs and BSP */
- ap_apicidx.num = 0;
-
- for_each_ap(bsp_apicid, SET_FIDVID_CORE_RANGE, store_ap_apicid, &ap_apicidx);
-
- for (i = 0; i < ap_apicidx.num; i++) {
- init_fidvid_bsp_stage1(ap_apicidx.apicid[i], &fv);
- }
-#else
- for_each_ap(bsp_apicid, SET_FIDVID_CORE0_ONLY, init_fidvid_bsp_stage1, &fv);
-#endif
-
- print_debug_fv("common_fid = ", fv.common_fid);
-
- if (fv.common_fid & (1 << 16)) { /* check nb_cof_vid_update */
-
- // Enable the common fid and other settings.
- enable_fid_change((fv.common_fid >> 8) & 0x1F);
-
- // nbfid change need warm reset, so reset at first
- return 1;
- }
-
- return 0; // No FID/VID changes. Don't reset
-}
-#endif
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2007 Advanced Micro Devices, Inc.
+ *
+ * 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; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#if SET_FIDVID == 1
+#include <northbridge/amd/amdht/AsPsDefs.h>
+
+#define SET_FIDVID_DEBUG 1
+
+// if we are tight of CAR stack, disable it
+#define SET_FIDVID_STORE_AP_APICID_AT_FIRST 1
+
+static inline void print_debug_fv(const char *str, u32 val)
+{
+#if SET_FIDVID_DEBUG == 1
+ printk(BIOS_DEBUG, "%s%x\n", str, val);
+#endif
+}
+
+static inline void print_debug_fv_8(const char *str, u8 val)
+{
+#if SET_FIDVID_DEBUG == 1
+ printk(BIOS_DEBUG, "%s%02x\n", str, val);
+#endif
+}
+
+static inline void print_debug_fv_64(const char *str, u32 val, u32 val2)
+{
+#if SET_FIDVID_DEBUG == 1
+ printk(BIOS_DEBUG, "%s%x%x\n", str, val, val2);
+#endif
+}
+
+struct fidvid_st {
+ u32 common_fid;
+};
+
+static void enable_fid_change(u8 fid)
+{
+ u32 dword;
+ u32 nodes;
+ device_t dev;
+ int i;
+
+ nodes = get_nodes();
+
+ for (i = 0; i < nodes; i++) {
+ dev = NODE_PCI(i, 3);
+ dword = pci_read_config32(dev, 0xd4);
+ dword &= ~0x1F;
+ dword |= (u32) fid & 0x1F;
+ dword |= 1 << 5; // enable
+ pci_write_config32(dev, 0xd4, dword);
+ printk(BIOS_DEBUG, "FID Change Node:%02x, F3xD4: %08x \n", i,
+ dword);
+ }
+}
+
+static void recalculateVsSlamTimeSettingOnCorePre(device_t dev)
+{
+ u8 pviModeFlag;
+ u8 highVoltageVid, lowVoltageVid, bValue;
+ u16 minimumSlamTime;
+ u16 vSlamTimes[7] = { 1000, 2000, 3000, 4000, 6000, 10000, 20000 }; /* Reg settings scaled by 100 */
+ u32 dtemp;
+ msr_t msr;
+
+ /* This function calculates the VsSlamTime using the range of possible
+ * voltages instead of a hardcoded 200us.
+ * Note:This function is called from setFidVidRegs and setUserPs after
+ * programming a custom Pstate.
+ */
+
+ /* Calculate Slam Time
+ * Vslam = 0.4us/mV * Vp0 - (lowest out of Vpmin or Valt)
+ * In our case, we will scale the values by 100 to avoid
+ * decimals.
+ */
+
+ /* Determine if this is a PVI or SVI system */
+ dtemp = pci_read_config32(dev, 0xA0);
+
+ if (dtemp & PVI_MODE)
+ pviModeFlag = 1;
+ else
+ pviModeFlag = 0;
+
+ /* Get P0's voltage */
+ msr = rdmsr(0xC0010064);
+ highVoltageVid = (u8) ((msr.lo >> PS_CPU_VID_SHFT) & 0x7F);
+
+ /* If SVI, we only care about CPU VID.
+ * If PVI, determine the higher voltage b/t NB and CPU
+ */
+ if (pviModeFlag) {
+ bValue = (u8) ((msr.lo >> PS_NB_VID_SHFT) & 0x7F);
+ if (highVoltageVid > bValue)
+ highVoltageVid = bValue;
+ }
+
+ /* Get Pmin's index */
+ msr = rdmsr(0xC0010061);
+ bValue = (u8) ((msr.lo >> PS_CUR_LIM_SHFT) & BIT_MASK_3);
+
+ /* Get Pmin's VID */
+ msr = rdmsr(0xC0010064 + bValue);
+ lowVoltageVid = (u8) ((msr.lo >> PS_CPU_VID_SHFT) & 0x7F);
+
+ /* If SVI, we only care about CPU VID.
+ * If PVI, determine the higher voltage b/t NB and CPU
+ */
+ if (pviModeFlag) {
+ bValue = (u8) ((msr.lo >> PS_NB_VID_SHFT) & 0x7F);
+ if (lowVoltageVid > bValue)
+ lowVoltageVid = bValue;
+ }
+
+ /* Get AltVID */
+ dtemp = pci_read_config32(dev, 0xDC);
+ bValue = (u8) (dtemp & BIT_MASK_7);
+
+ /* Use the VID with the lowest voltage (higher VID) */
+ if (lowVoltageVid < bValue)
+ lowVoltageVid = bValue;
+
+ /* If Vids are 7Dh - 7Fh, force 7Ch to keep calculations linear */
+ if (lowVoltageVid > 0x7C) {
+ lowVoltageVid = 0x7C;
+ if (highVoltageVid > 0x7C)
+ highVoltageVid = 0x7C;
+ }
+
+ bValue = (u8) (lowVoltageVid - highVoltageVid);
+
+ /* Each Vid increment is 12.5 mV. The minimum slam time is:
+ * vidCodeDelta * 12.5mV * 0.4us/mV
+ * Scale by 100 to avoid decimals.
+ */
+ minimumSlamTime = bValue * (125 * 4);
+
+ /* Now round up to nearest register setting.
+ * Note that if we don't find a value, we
+ * will fall through to a value of 7
+ */
+ for (bValue = 0; bValue < 7; bValue++) {
+ if (minimumSlamTime <= vSlamTimes[bValue])
+ break;
+ }
+
+ /* Apply the value */
+ dtemp = pci_read_config32(dev, 0xD8);
+ dtemp &= VSSLAM_MASK;
+ dtemp |= bValue;
+ pci_write_config32(dev, 0xd8, dtemp);
+}
+
+static void prep_fid_change(void)
+{
+ u32 dword, dtemp;
+ u32 nodes;
+ device_t dev;
+ int i;
+
+ /* This needs to be run before any Pstate changes are requested */
+
+ nodes = get_nodes();
+
+ for (i = 0; i < nodes; i++) {
+ printk(BIOS_DEBUG, "Prep FID/VID Node:%02x \n", i);
+ dev = NODE_PCI(i, 3);
+
+ dword = pci_read_config32(dev, 0xd8);
+ dword &= VSRAMP_MASK;
+ dword |= VSRAMP_VALUE;
+ pci_write_config32(dev, 0xd8, dword);
+
+ /* Figure out the value for VsSlamTime and program it */
+ recalculateVsSlamTimeSettingOnCorePre(dev);
+
+ /* Program fields in Clock Power/Control register0 (F3xD4) */
+ /* set F3xD4 Clock Power/Timing Control 0 Register
+ * NbClkDidApplyAll=1b
+ * NbClkDid=100b
+ * PowerStepUp= "platform dependent"
+ * PowerStepDown= "platform dependent"
+ * LinkPllLink=01b
+ * ClkRampHystSel=HW default
+ */
+ /* check platform type */
+ if (!(get_platform_type() & AMD_PTYPE_SVR)) {
+ /* For non-server platform
+ * PowerStepUp=01000b - 50nS
+ * PowerStepDown=01000b - 50ns
+ */
+ dword = pci_read_config32(dev, 0xd4);
+ dword &= CPTC0_MASK;
+ dword |= NB_CLKDID_ALL | NB_CLKDID | PW_STP_UP50 | PW_STP_DN50 | LNK_PLL_LOCK; /* per BKDG */
+ pci_write_config32(dev, 0xd4, dword);
+ } else {
+ dword = pci_read_config32(dev, 0xd4);
+ dword &= CPTC0_MASK;
+ /* get number of cores for PowerStepUp & PowerStepDown in server
+ 1 core - 400nS - 0000b
+ 2 cores - 200nS - 0010b
+ 3 cores - 133nS -> 100nS - 0011b
+ 4 cores - 100nS - 0011b
+ */
+ switch (get_core_num_in_bsp(i)) {
+ case 0:
+ dword |= PW_STP_UP400 | PW_STP_DN400;
+ break;
+ case 1:
+ case 2:
+ dword |= PW_STP_UP200 | PW_STP_DN200;
+ break;
+ case 3:
+ dword |= PW_STP_UP100 | PW_STP_DN100;
+ break;
+ default:
+ dword |= PW_STP_UP100 | PW_STP_DN100;
+ break;
+ }
+ dword |= NB_CLKDID_ALL | NB_CLKDID | LNK_PLL_LOCK;
+ pci_write_config32(dev, 0xd4, dword);
+ }
+
+ /* check PVI/SVI */
+ dword = pci_read_config32(dev, 0xA0);
+ if (dword & PVI_MODE) { /* PVI */
+ /* set slamVidMode to 0 for PVI */
+ dword &= VID_SLAM_OFF | PLLLOCK_OFF;
+ dword |= PLLLOCK_DFT_L;
+ pci_write_config32(dev, 0xA0, dword);
+ } else { /* SVI */
+ /* set slamVidMode to 1 for SVI */
+ dword &= PLLLOCK_OFF;
+ dword |= PLLLOCK_DFT_L | VID_SLAM_ON;
+ pci_write_config32(dev, 0xA0, dword);
+
+ dtemp = dword;
+
+ /* Program F3xD8[PwrPlanes] according F3xA0[DulaVdd] */
+ dword = pci_read_config32(dev, 0xD8);
+
+ if (dtemp & DUAL_VDD_BIT)
+ dword |= PWR_PLN_ON;
+ else
+ dword &= PWR_PLN_OFF;
+ pci_write_config32(dev, 0xD8, dword);
+ }
+
+ /* Note the following settings are additional from the ported
+ * function setFidVidRegs()
+ */
+ dword = pci_read_config32(dev, 0xDc);
+ dword |= 0x5 << 12; /* NbsynPtrAdj set to 0x5 per BKDG (needs reset) */
+ pci_write_config32(dev, 0xdc, dword);
+
+ /* Rev B settings - FIXME: support other revs. */
+ dword = 0xA0E641E6;
+ pci_write_config32(dev, 0x84, dword);
+
+ dword = 0xE600A681;
+ pci_write_config32(dev, 0x80, dword);
+
+ dword = pci_read_config32(dev, 0x80);
+ printk(BIOS_DEBUG, " F3x80: %08x \n", dword);
+ dword = pci_read_config32(dev, 0x84);
+ printk(BIOS_DEBUG, " F3x84: %08x \n", dword);
+ dword = pci_read_config32(dev, 0xD4);
+ printk(BIOS_DEBUG, " F3xD4: %08x \n", dword);
+ dword = pci_read_config32(dev, 0xD8);
+ printk(BIOS_DEBUG, " F3xD8: %08x \n", dword);
+ dword = pci_read_config32(dev, 0xDC);
+ printk(BIOS_DEBUG, " F3xDC: %08x \n", dword);
+
+
+ }
+}
+
+
+static void UpdateSinglePlaneNbVid(void)
+{
+ u32 nbVid, cpuVid;
+ u8 i;
+ msr_t msr;
+
+ /* copy higher voltage (lower VID) of NBVID & CPUVID to both */
+ for (i = 0; i < 5; i++) {
+ msr = rdmsr(PS_REG_BASE + i);
+ nbVid = (msr.lo & PS_CPU_VID_M_ON) >> PS_CPU_VID_SHFT;
+ cpuVid = (msr.lo & PS_NB_VID_M_ON) >> PS_NB_VID_SHFT;
+
+ if (nbVid != cpuVid) {
+ if (nbVid > cpuVid)
+ nbVid = cpuVid;
+
+ msr.lo = msr.lo & PS_BOTH_VID_OFF;
+ msr.lo = msr.lo | (u32) ((nbVid) << PS_NB_VID_SHFT);
+ msr.lo = msr.lo | (u32) ((nbVid) << PS_CPU_VID_SHFT);
+ wrmsr(PS_REG_BASE + i, msr);
+ }
+ }
+}
+
+static void fixPsNbVidBeforeWR(u32 newNbVid, u32 coreid)
+{
+ msr_t msr;
+ u8 startup_pstate;
+
+ /* This function sets NbVid before the warm reset.
+ * Get StartupPstate from MSRC001_0071.
+ * Read Pstate register pionted by [StartupPstate].
+ * and copy its content to P0 and P1 registers.
+ * Copy newNbVid to P0[NbVid].
+ * transition to P1 on all cores,
+ * then transition to P0 on core 0.
+ * Wait for MSRC001_0063[CurPstate] = 000b on core 0.
+ */
+
+ msr = rdmsr(0xc0010071);
+ startup_pstate = (msr.hi >> (32 - 32)) & 0x07;
+
+ /* Copy startup pstate to P1 and P0 MSRs. Set the maxvid for this node in P0.
+ * Then transition to P1 for corex and P0 for core0.
+ * These setting will be cleared by the warm reset
+ */
+ msr = rdmsr(0xC0010064 + startup_pstate);
+ wrmsr(0xC0010065, msr);
+ wrmsr(0xC0010064, msr);
+
+ msr.lo &= ~0xFE000000; // clear nbvid
+ msr.lo |= newNbVid << 25;
+ wrmsr(0xC0010064, msr);
+
+ UpdateSinglePlaneNbVid();
+
+ // Transition to P1 for all APs and P0 for core0.
+ msr = rdmsr(0xC0010062);
+ msr.lo = (msr.lo & ~0x07) | 1;
+ wrmsr(0xC0010062, msr);
+
+ // Wait for P1 to set.
+ do {
+ msr = rdmsr(0xC0010063);
+ } while (msr.lo != 1);
+
+ if (coreid == 0) {
+ msr.lo = msr.lo & ~0x07;
+ wrmsr(0xC0010062, msr);
+ // Wait for P0 to set.
+ do {
+ msr = rdmsr(0xC0010063);
+ } while (msr.lo != 0);
+ }
+}
+
+static void coreDelay(void)
+{
+ u32 saved;
+ u32 hi, lo, msr;
+ u32 cycles;
+
+ /* delay ~40us
+ This seems like a hack to me...
+ It would be nice to have a central delay function. */
+
+ cycles = 8000 << 3; /* x8 (number of 1.25ns ticks) */
+
+ msr = 0x10; /* TSC */
+ _RDMSR(msr, &lo, &hi);
+ saved = lo;
+ do {
+ _RDMSR(msr, &lo, &hi);
+ } while (lo - saved < cycles);
+}
+
+static void transitionVid(u32 targetVid, u8 dev, u8 isNb)
+{
+ u32 currentVid, dtemp;
+ msr_t msr;
+ u8 vsTimecode;
+ u16 timeTable[8] = { 10, 20, 30, 40, 60, 100, 200, 500 };
+ int vsTime;
+
+ /* This function steps or slam the Nb VID to the target VID.
+ * It uses VSRampTime for [SlamVidMode]=0 ([PviMode]=1)
+ * or VSSlamTime for [SlamVidMode]=1 ([PviMode]=0)to time period.
+ */
+
+ /* get the current VID */
+ msr = rdmsr(0xC0010071);
+ if (isNb)
+ currentVid = (msr.lo >> NB_VID_POS) & BIT_MASK_7;
+ else
+ currentVid = (msr.lo >> CPU_VID_POS) & BIT_MASK_7;
+
+ /* Read MSRC001_0070 COFVID Control Register */
+ msr = rdmsr(0xC0010070);
+
+ /* check PVI/SPI */
+ dtemp = pci_read_config32(dev, 0xA0);
+ if (dtemp & PVI_MODE) { /* PVI, step VID */
+ if (currentVid < targetVid) {
+ while (currentVid < targetVid) {
+ currentVid++;
+ if (isNb)
+ msr.lo = (msr.lo & NB_VID_MASK_OFF) | (currentVid << NB_VID_POS);
+ else
+ msr.lo = (msr.lo & CPU_VID_MASK_OFF) | (currentVid << CPU_VID_POS);
+ wrmsr(0xC0010070, msr);
+
+ /* read F3xD8[VSRampTime] */
+ dtemp = pci_read_config32(dev, 0xD8);
+ vsTimecode = (u8) ((dtemp >> VS_RAMP_T) & 0x7);
+ vsTime = (int)timeTable[vsTimecode];
+ do {
+ coreDelay();
+ vsTime -= 40;
+ } while (vsTime > 0);
+ }
+ } else if (currentVid > targetVid) {
+ while (currentVid > targetVid) {
+ currentVid--;
+ if (isNb)
+ msr.lo = (msr.lo & NB_VID_MASK_OFF) | (currentVid << NB_VID_POS);
+ else
+ msr.lo = (msr.lo & CPU_VID_MASK_OFF) | (currentVid << CPU_VID_POS);
+ wrmsr(0xC0010070, msr);
+
+ /* read F3xD8[VSRampTime] */
+ dtemp = pci_read_config32(dev, 0xD8);
+ vsTimecode = (u8) ((dtemp >> VS_RAMP_T) & 0x7);
+ vsTime = (int)timeTable[vsTimecode];
+ do {
+ coreDelay();
+ vsTime -= 40;
+ } while (vsTime > 0);
+ }
+ }
+ } else { /* SVI, slam VID */
+ if (isNb)
+ msr.lo = (msr.lo & NB_VID_MASK_OFF) | (targetVid << NB_VID_POS);
+ else
+ msr.lo = (msr.lo & CPU_VID_MASK_OFF) | (targetVid << CPU_VID_POS);
+ wrmsr(0xC0010070, msr);
+
+ /* read F3xD8[VSRampTime] */
+ dtemp = pci_read_config32(dev, 0xD8);
+ vsTimecode = (u8) ((dtemp >> VS_RAMP_T) & 0x7);
+ vsTime = (int)timeTable[vsTimecode];
+ do {
+ coreDelay();
+ vsTime -= 40;
+ } while (vsTime > 0);
+ }
+}
+
+
+static void init_fidvid_ap(u32 bsp_apicid, u32 apicid, u32 nodeid, u32 coreid)
+{
+ device_t dev;
+ u32 vid_max;
+ u32 fid_max;
+ u8 nb_cof_vid_update;
+ u8 pvimode;
+ u32 reg1fc;
+ u32 send;
+ u8 nodes;
+ u8 i;
+
+ printk(BIOS_DEBUG, "FIDVID on AP: %02x\n", apicid);
+
+ /* Steps 1-6 of BIOS NB COF and VID Configuration
+ * for SVI and Single-Plane PVI Systems.
+ */
+
+ /* If any node has nb_cof_vid_update set all nodes need an update. */
+ nodes = get_nodes();
+ nb_cof_vid_update = 0;
+ for (i = 0; i < nodes; i++) {
+ if (pci_read_config32(NODE_PCI(i, 3), 0x1FC) & 1) {
+ nb_cof_vid_update = 1;
+ break;
+ }
+ }
+
+ dev = NODE_PCI(nodeid, 3);
+ pvimode = (pci_read_config32(dev, 0xA0) >> 8) & 1;
+ reg1fc = pci_read_config32(dev, 0x1FC);
+
+ if (nb_cof_vid_update) {
+ if (pvimode) {
+ vid_max = (reg1fc >> 7) & 0x7F;
+ fid_max = (reg1fc >> 2) & 0x1F;
+
+ /* write newNbVid to P-state Reg's NbVid always if NbVidUpdatedAll=1 */
+ fixPsNbVidBeforeWR(vid_max, coreid);
+ } else { /* SVI */
+ vid_max = ((reg1fc >> 7) & 0x7F) - ((reg1fc >> 17) & 0x1F);
+ fid_max = ((reg1fc >> 2) & 0x1F) + ((reg1fc >> 14) & 0x7);
+ transitionVid(vid_max, dev, IS_NB);
+ }
+
+ /* fid setup is handled by the BSP at the end. */
+
+ } else { /* ! nb_cof_vid_update */
+ /* Use max values */
+ if (pvimode)
+ UpdateSinglePlaneNbVid();
+ }
+
+ send = (nb_cof_vid_update << 16) | (fid_max << 8);
+ send |= (apicid << 24); // ap apicid
+
+ // Send signal to BSP about this AP max fid
+ // This also indicates this AP is ready for warm reset (if required).
+ lapic_write(LAPIC_MSG_REG, send | F10_APSTATE_RESET);
+}
+
+static u32 calc_common_fid(u32 fid_packed, u32 fid_packed_new)
+{
+ u32 fidmax;
+ u32 fidmax_new;
+
+ fidmax = (fid_packed >> 8) & 0xFF;
+
+ fidmax_new = (fid_packed_new >> 8) & 0xFF;
+
+ if (fidmax > fidmax_new) {
+ fidmax = fidmax_new;
+ }
+
+ fid_packed &= 0xFF << 16;
+ fid_packed |= (fidmax << 8);
+ fid_packed |= fid_packed_new & (0xFF << 16); // set nb_cof_vid_update
+
+ return fid_packed;
+}
+
+static void init_fidvid_bsp_stage1(u32 ap_apicid, void *gp)
+{
+ u32 readback = 0;
+ u32 timeout = 1;
+
+ struct fidvid_st *fvp = gp;
+ int loop;
+
+ print_debug_fv("Wait for AP stage 1: ap_apicid = ", ap_apicid);
+
+ loop = 100000;
+ while (--loop > 0) {
+ if (lapic_remote_read(ap_apicid, LAPIC_MSG_REG, &readback) != 0)
+ continue;
+ if ((readback & 0x3f) == 1) {
+ timeout = 0;
+ break; /* target ap is in stage 1 */
+ }
+ }
+
+ if (timeout) {
+ printk(BIOS_DEBUG, "%s: timed out reading from ap %02x\n",
+ __func__, ap_apicid);
+ return;
+ }
+
+ print_debug_fv("\treadback = ", readback);
+
+ fvp->common_fid = calc_common_fid(fvp->common_fid, readback);
+
+ print_debug_fv("\tcommon_fid(packed) = ", fvp->common_fid);
+
+}
+
+static void updateSviPsNbVidAfterWR(u32 newNbVid)
+{
+ msr_t msr;
+ u8 i;
+
+ /* This function copies newNbVid to NbVid bits in P-state Registers[4:0]
+ * for SVI mode.
+ */
+
+ for (i = 0; i < 5; i++) {
+ msr = rdmsr(0xC0010064 + i);
+ if ((msr.hi >> 31) & 1) { /* PstateEn? */
+ msr.lo &= ~(0x7F << 25);
+ msr.lo |= (newNbVid & 0x7F) << 25;
+ wrmsr(0xC0010064 + i, msr);
+ }
+ }
+}
+
+
+static void fixPsNbVidAfterWR(u32 newNbVid, u8 NbVidUpdatedAll)
+{
+ msr_t msr;
+ u8 i;
+ u8 StartupPstate;
+
+ /* This function copies newNbVid to NbVid bits in P-state
+ * Registers[4:0] if its NbDid bit=0 and PstateEn bit =1 in case of
+ * NbVidUpdatedAll =0 or copies copies newNbVid to NbVid bits in
+ * P-state Registers[4:0] if its and PstateEn bit =1 in case of
+ * NbVidUpdatedAll=1. Then transition to StartPstate.
+ */
+
+ /* write newNbVid to P-state Reg's NbVid if its NbDid=0 */
+ for (i = 0; i < 5; i++) {
+ msr = rdmsr(0xC0010064 + i);
+ /* NbDid (bit 22 of P-state Reg) == 0 or NbVidUpdatedAll = 1 */
+ if ((((msr.lo >> 22) & 1) == 0) || NbVidUpdatedAll) {
+ msr.lo &= ~(0x7F << 25);
+ msr.lo |= (newNbVid & 0x7F) << 25;
+ wrmsr(0xC0010064 + i, msr);
+ }
+ }
+
+ UpdateSinglePlaneNbVid();
+
+ /* For each core in the system, transition all cores to StartupPstate */
+ msr = rdmsr(0xC0010071);
+ StartupPstate = msr.hi & 0x07;
+ msr = rdmsr(0xC0010062);
+ msr.lo = StartupPstate;
+ wrmsr(0xC0010062, msr);
+
+ /* Wait for StartupPstate to set. */
+ do {
+ msr = rdmsr(0xC0010063);
+ } while (msr.lo != StartupPstate);
+}
+
+static void set_p0(void)
+{
+ msr_t msr;
+
+ // Transition P0 for calling core.
+ msr = rdmsr(0xC0010062);
+ msr.lo = (msr.lo & ~0x07);
+ wrmsr(0xC0010062, msr);
+
+ /* Wait for P0 to set. */
+ do {
+ msr = rdmsr(0xC0010063);
+ } while (msr.lo != 0);
+}
+
+static void finalPstateChange(void)
+{
+ /* Enble P0 on all cores for best performance.
+ * Linux can slow them down later if need be.
+ * It is safe since they will be in C1 halt
+ * most of the time anyway.
+ */
+ set_p0();
+}
+
+static void init_fidvid_stage2(u32 apicid, u32 nodeid)
+{
+ msr_t msr;
+ device_t dev;
+ u32 reg1fc;
+ u32 dtemp;
+ u32 nbvid;
+ u8 nb_cof_vid_update;
+ u8 nodes;
+ u8 NbVidUpdateAll;
+ u8 i;
+ u8 pvimode;
+
+ /* After warm reset finish the fid/vid setup for all cores. */
+
+ /* If any node has nb_cof_vid_update set all nodes need an update. */
+ nodes = get_nodes();
+ nb_cof_vid_update = 0;
+ for (i = 0; i < nodes; i++) {
+ if (pci_read_config32(NODE_PCI(i, 3), 0x1FC) & 1) {
+ nb_cof_vid_update = 1;
+ break;
+ }
+ }
+
+ dev = NODE_PCI(nodeid, 3);
+ pvimode = (pci_read_config32(dev, 0xA0) >> 8) & 1;
+ reg1fc = pci_read_config32(dev, 0x1FC);
+ nbvid = (reg1fc >> 7) & 0x7F;
+ NbVidUpdateAll = (reg1fc >> 1) & 1;
+
+ if (nb_cof_vid_update) {
+ if (pvimode) {
+ nbvid = (reg1fc >> 7) & 0x7F;
+ /* write newNbVid to P-state Reg's NbVid if its NbDid=0 */
+ fixPsNbVidAfterWR(nbvid, NbVidUpdateAll);
+ } else { /* SVI */
+ nbvid = ((reg1fc >> 7) & 0x7F) - ((reg1fc >> 17) & 0x1F);
+ updateSviPsNbVidAfterWR(nbvid);
+ }
+ } else { /* !nb_cof_vid_update */
+ if (pvimode)
+ UpdateSinglePlaneNbVid();
+ }
+ dtemp = pci_read_config32(dev, 0xA0);
+ dtemp &= PLLLOCK_OFF;
+ dtemp |= PLLLOCK_DFT_L;
+ pci_write_config32(dev, 0xA0, dtemp);
+
+ finalPstateChange();
+
+ /* Set TSC to tick at the P0 ndfid rate */
+ msr = rdmsr(HWCR);
+ msr.lo |= 1 << 24;
+ wrmsr(HWCR, msr);
+}
+
+
+#if SET_FIDVID_STORE_AP_APICID_AT_FIRST == 1
+struct ap_apicid_st {
+ u32 num;
+ // it could use 256 bytes for 64 node quad core system
+ u8 apicid[NODE_NUMS * 4];
+};
+
+static void store_ap_apicid(unsigned ap_apicid, void *gp)
+{
+ struct ap_apicid_st *p = gp;
+
+ p->apicid[p->num++] = ap_apicid;
+
+}
+#endif
+
+
+static int init_fidvid_bsp(u32 bsp_apicid, u32 nodes)
+{
+#if SET_FIDVID_STORE_AP_APICID_AT_FIRST == 1
+ struct ap_apicid_st ap_apicidx;
+ u32 i;
+#endif
+ struct fidvid_st fv;
+ device_t dev;
+ u32 vid_max;
+ u32 fid_max=0;
+ u8 nb_cof_vid_update;
+ u32 reg1fc;
+ u8 pvimode;
+
+ printk(BIOS_DEBUG, "FIDVID on BSP, APIC_id: %02x\n", bsp_apicid);
+ /* FIXME: The first half of this function is nearly the same as
+ * init_fidvid_bsp() and the code could be combined.
+ */
+
+ /* Steps 1-6 of BIOS NB COF and VID Configuration
+ * for SVI and Single-Plane PVI Systems.
+ */
+
+ /* If any node has nb_cof_vid_update set all nodes need an update. */
+ nb_cof_vid_update = 0;
+ for (i = 0; i < nodes; i++) {
+ if (pci_read_config32(NODE_PCI(i, 3), 0x1FC) & 1) {
+ nb_cof_vid_update = 1;
+ break;
+ }
+ }
+
+ dev = NODE_PCI(0, 3);
+ pvimode = (pci_read_config32(dev, 0xA0) >> 8) & 1;
+ reg1fc = pci_read_config32(dev, 0x1FC);
+
+ if (nb_cof_vid_update) {
+ if (pvimode) {
+ vid_max = (reg1fc >> 7) & 0x7F;
+ fid_max = (reg1fc >> 2) & 0x1F;
+
+ /* write newNbVid to P-state Reg's NbVid always if NbVidUpdatedAll=1 */
+ fixPsNbVidBeforeWR(vid_max, 0);
+ } else { /* SVI */
+ vid_max = ((reg1fc >> 7) & 0x7F) - ((reg1fc >> 17) & 0x1F);
+ fid_max = ((reg1fc >> 2) & 0x1F) + ((reg1fc >> 14) & 0x7);
+ transitionVid(vid_max, dev, IS_NB);
+ }
+
+ /* fid setup is handled by the BSP at the end. */
+
+ } else { /* ! nb_cof_vid_update */
+ /* Use max values */
+ if (pvimode)
+ UpdateSinglePlaneNbVid();
+ }
+
+ fv.common_fid = (nb_cof_vid_update << 16) | (fid_max << 8);
+ print_debug_fv("BSP fid = ", fv.common_fid);
+
+#if SET_FIDVID_STORE_AP_APICID_AT_FIRST == 1 && SET_FIDVID_CORE0_ONLY == 0
+ /* For all APs (We know the APIC ID of all APs even when the APIC ID
+ is lifted) remote read from AP LAPIC_MSG_REG about max fid.
+ Then calculate the common max fid that can be used for all
+ APs and BSP */
+ ap_apicidx.num = 0;
+
+ for_each_ap(bsp_apicid, SET_FIDVID_CORE_RANGE, store_ap_apicid, &ap_apicidx);
+
+ for (i = 0; i < ap_apicidx.num; i++) {
+ init_fidvid_bsp_stage1(ap_apicidx.apicid[i], &fv);
+ }
+#else
+ for_each_ap(bsp_apicid, SET_FIDVID_CORE0_ONLY, init_fidvid_bsp_stage1, &fv);
+#endif
+
+ print_debug_fv("common_fid = ", fv.common_fid);
+
+ if (fv.common_fid & (1 << 16)) { /* check nb_cof_vid_update */
+
+ // Enable the common fid and other settings.
+ enable_fid_change((fv.common_fid >> 8) & 0x1F);
+
+ // nbfid change need warm reset, so reset at first
+ return 1;
+ }
+
+ return 0; // No FID/VID changes. Don't reset
+}
+#endif
generated by cgit v1.2.3 (git 2.39.1) at 2024-09-06 23:03:43 +0000