/* * This file is part of the coreboot project. * * Copyright (C) 2010 Advanced Micro Devices, Inc. * Copyright (C) 2015 Timothy Pearson , Raptor Engineering * * 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. */ #include #include #include #include #include #include "sr5650.h" #include "cmn.h" /*------------------------------------------------ * Global variable ------------------------------------------------*/ PCIE_CFG AtiPcieCfg = { PCIE_ENABLE_STATIC_DEV_REMAP, /* Config */ 0, /* ResetReleaseDelay */ 0, /* Gfx0Width */ 0, /* Gfx1Width */ 0, /* GfxPayload */ 0, /* GppPayload */ 0, /* PortDetect, filled by GppSbInit */ 0, /* PortHp */ 0, /* DbgConfig */ 0, /* DbgConfig2 */ 0, /* GfxLx */ 0, /* GppLx */ 0, /* NBSBLx */ 0, /* PortSlotInit */ 0, /* Gfx0Pwr */ 0, /* Gfx1Pwr */ 0 /* GppPwr */ }; static void ValidatePortEn(struct device *nb_dev); static void ValidatePortEn(struct device *nb_dev) { } /***************************************************************** * Compliant with CIM_33's PCIEPowerOffGppPorts * Power off unused GPP lines *****************************************************************/ static void PciePowerOffGppPorts(struct device *nb_dev, struct device *dev, u32 port) { printk(BIOS_DEBUG, "PciePowerOffGppPorts() port %d\n", port); u32 reg; u32 state_save; uint8_t i; struct southbridge_amd_sr5650_config *cfg = (struct southbridge_amd_sr5650_config *)nb_dev->chip_info; u32 state = cfg->port_enable; if (!(AtiPcieCfg.Config & PCIE_DISABLE_HIDE_UNUSED_PORTS)) state &= AtiPcieCfg.PortDetect; state = ~state; state &= (1 << 4) + (1 << 5) + (1 << 6) + (1 << 7); state_save = state << 17; /* Disable ports any that failed training */ for (i = 9; i <= 13; i++) { if (!(AtiPcieCfg.PortDetect & 1 << i)) { if ((port >= 9) && (port <= 13)) { state |= (1 << (port + 7)); } if (port == 9) state_save |= 1 << 25; if (port == 10) state_save |= 1 << 26; if (port == 11) state_save |= 1 << 6; if (port == 12) state_save |= 1 << 7; if (port == 13) { reg = nbmisc_read_index(nb_dev, 0x2a); reg |= 1 << 4; nbmisc_write_index(nb_dev, 0x2a, reg); } } } state &= !(AtiPcieCfg.PortHp); reg = nbmisc_read_index(nb_dev, 0x0c); reg |= state; nbmisc_write_index(nb_dev, 0x0c, reg); reg = nbmisc_read_index(nb_dev, 0x08); reg |= state_save; nbmisc_write_index(nb_dev, 0x08, reg); if ((AtiPcieCfg.Config & PCIE_OFF_UNUSED_GPP_LANES) && !(AtiPcieCfg. Config & (PCIE_DISABLE_HIDE_UNUSED_PORTS + PCIE_GFX_COMPLIANCE))) { } /* step 3 Power Down Control for Southbridge */ reg = nbpcie_p_read_index(dev, 0xa2); switch ((reg >> 4) & 0x7) { /* get bit 4-6, LC_LINK_WIDTH_RD */ case 1: nbpcie_ind_write_index(nb_dev, 0x65, 0x0e0e); break; case 2: nbpcie_ind_write_index(nb_dev, 0x65, 0x0c0c); break; default: break; } } /********************************************************************** **********************************************************************/ static void switching_gpp1_configurations(struct device *nb_dev, struct device *sb_dev) { u32 reg; struct southbridge_amd_sr5650_config *cfg = (struct southbridge_amd_sr5650_config *)nb_dev->chip_info; /* 4.3.3.1.1.1.step1. Asserts PCIE-GPP1 global reset */ reg = nbmisc_read_index(nb_dev, 0x8); reg |= 1 << 15; nbmisc_write_index(nb_dev, 0x8, reg); /* 4.3.3.1.1.1.step2. De-asserts STRAP_BIF_all_valid for PCIE-GPP1 core */ reg = nbmisc_read_index(nb_dev, 0x26); reg |= 1 << 28; nbmisc_write_index(nb_dev, 0x26, reg); /* 4.3.3.1.1.1.step3. Programs PCIE-GPP1 to be desired port configuration 8:8 or 16:0. */ reg = nbmisc_read_index(nb_dev, 0x8); reg &= ~(1 << 8); /* clean */ reg |= cfg->gpp1_configuration << 8; nbmisc_write_index(nb_dev, 0x8, reg); /* 4.3.3.1.1.1.step4. Wait for 2ms */ mdelay(1); /* 4.3.3.1.1.1.step5. Asserts STRAP_BIF_all_valid for PCIE-GPP1 core */ reg = nbmisc_read_index(nb_dev, 0x26); reg &= ~(1 << 28); nbmisc_write_index(nb_dev, 0x26, reg); /* 4.3.3.1.1.1.step6. De-asserts PCIE-GPP1 global reset */ reg = nbmisc_read_index(nb_dev, 0x8); reg &= ~(1 << 15); nbmisc_write_index(nb_dev, 0x8, reg); /* Follow the procedure for PCIE-GPP1 common initialization and * link training sequence. */ } /********************************************************************** **********************************************************************/ static void switching_gpp2_configurations(struct device *nb_dev, struct device *sb_dev) { u32 reg; struct southbridge_amd_sr5650_config *cfg = (struct southbridge_amd_sr5650_config *)nb_dev->chip_info; /* 4.3.3.1.1.2.step1. Asserts PCIE-GPP2 global reset */ reg = nbmisc_read_index(nb_dev, 0x8); reg |= 1 << 13; nbmisc_write_index(nb_dev, 0x8, reg); /* 4.3.3.1.1.2.step2. De-asserts STRAP_BIF_all_valid for PCIE-GPP2 core */ reg = nbmisc_read_index(nb_dev, 0x26); reg |= 1 << 29; nbmisc_write_index(nb_dev, 0x26, reg); /* 4.3.3.1.1.2.step3. Programs PCIE-GPP2 to be desired port configuration 8:8 or 16:0. */ reg = nbmisc_read_index(nb_dev, 0x8); reg &= ~(1 << 9); /* clean */ reg |= (cfg->gpp2_configuration & 1) << 9; nbmisc_write_index(nb_dev, 0x8, reg); /* 4.3.3.1.1.2.step4. Wait for 2ms */ mdelay(2); /* 4.3.3.1.1.2.step5. Asserts STRAP_BIF_all_valid for PCIE-GPP2 core */ reg = nbmisc_read_index(nb_dev, 0x26); reg &= ~(1 << 29); nbmisc_write_index(nb_dev, 0x26, reg); /* 4.3.3.1.1.2.step6. De-asserts PCIE-GPP2 global reset */ reg = nbmisc_read_index(nb_dev, 0x8); reg &= ~(1 << 13); nbmisc_write_index(nb_dev, 0x8, reg); /* Follow the procedure for PCIE-GPP2 common initialization and * link training sequence. */ } static void switching_gpp3a_configurations(struct device *nb_dev, struct device *sb_dev) { u32 reg; struct southbridge_amd_sr5650_config *cfg = (struct southbridge_amd_sr5650_config *)nb_dev->chip_info; /* 4.3.3.2.3.2.step1. Asserts PCIE-GPP3a global reset. */ reg = nbmisc_read_index(nb_dev, 0x8); reg |= 1 << 31; nbmisc_write_index(nb_dev, 0x8, reg); /* 4.3.3.2.3.2.step2. De-asserts STRAP_BIF_all_valid for PCIE-GPP3a core */ reg = nbmisc_read_index(nb_dev, 0x26); reg |= 1 << 30; nbmisc_write_index(nb_dev, 0x26, reg); /* 4.3.3.2.3.2.step3. Programs the desired PCIE-GPP3a configuration. */ reg = nbmisc_read_index(nb_dev, 0x67); reg &= ~0x1F; /* clean */ reg |= cfg->gpp3a_configuration; nbmisc_write_index(nb_dev, 0x67, reg); /* 4.3.3.2.3.2.step4. Programs PCIE-GPP3a Line Director. */ reg = nbmisc_read_index(nb_dev, 0x26); reg &= 0xF0000000; /* TODO:Lane reversed. */ switch (cfg->gpp3a_configuration) { case 0xB: /* 1:1:1:1:1:1 */ reg |= 0x2AA3554; break; case 0x1: /* 4:2:0:0:0:0 */ reg |= 0x055B000; break; case 0x2: /* 4:1:1:0:0:0 */ reg |= 0x215B400; break; case 0xC: /* 2:2:2:0:0:0 */ reg |= 0xFF0BAA0; break; case 0xA: /* 2:2:1:1:0:0 */ reg |= 0x215B400; break; case 0x4: /* 2:1:1:1:1:0 */ reg |= 0xFF0BAA0; break; default: /* shouldn't be here. */ printk(BIOS_DEBUG, "Warning:gpp3a_configuration is not correct. Check your devicetree.cb\n"); break; } nbmisc_write_index(nb_dev, 0x26, reg); /* 4.3.3.2.3.2.step5. De-asserts STRAP_BIF_all_valid for PCIE-GPP3a core */ reg = nbmisc_read_index(nb_dev, 0x26); reg &= ~(1 << 30); nbmisc_write_index(nb_dev, 0x26, reg); /* 4.3.3.2.3.2.step6. De-asserts PCIE-GPP3a global reset. */ reg = nbmisc_read_index(nb_dev, 0x8); reg &= ~(1 << 31); nbmisc_write_index(nb_dev, 0x8, reg); } /***************************************************************** * The sr5650 uses NBCONFIG:0x1c (BAR3) to map the PCIE Extended Configuration * Space to a 256MB range within the first 4GB of addressable memory. *****************************************************************/ void enable_pcie_bar3(struct device *nb_dev) { printk(BIOS_DEBUG, "%s\n", __func__); set_nbcfg_enable_bits(nb_dev, 0x7C, 1 << 30, 1 << 30); /* Enables writes to the BAR3 register. */ set_nbcfg_enable_bits(nb_dev, 0x84, 7 << 16, 0 << 16); pci_write_config32(nb_dev, 0x1C, EXT_CONF_BASE_ADDRESS); /* PCIEMiscInit */ pci_write_config32(nb_dev, 0x20, 0x00000000); set_htiu_enable_bits(nb_dev, 0x32, 1 << 28, 1 << 28); /* PCIEMiscInit */ ProgK8TempMmioBase(1, EXT_CONF_BASE_ADDRESS, TEMP_MMIO_BASE_ADDRESS); } /***************************************************************** * We should disable bar3 when we want to exit sr5650_enable, because bar3 will be * remapped in set_resource later. *****************************************************************/ void disable_pcie_bar3(struct device *nb_dev) { printk(BIOS_DEBUG, "%s\n", __func__); pci_write_config32(nb_dev, 0x1C, 0); /* clear BAR3 address */ set_nbcfg_enable_bits(nb_dev, 0x7C, 1 << 30, 0 << 30); /* Disable writes to the BAR3. */ ProgK8TempMmioBase(0, EXT_CONF_BASE_ADDRESS, TEMP_MMIO_BASE_ADDRESS); } /* * GEN2 Software Compliance */ void init_gen2(struct device *nb_dev, struct device *dev, u8 port) { u32 reg, val; /* for A11 (0x89 == 0) */ reg = 0x34; if (port <= 3) { val = 1<<5; } else { val = 1<<31; if (port >= 9) reg = 0x39; } /* TODO: check for rev > a11 */ switch (port) { case 2: reg = 0x34; val = 1<<5; break; case 3: reg = 0x22; val = 1<<6; break; case 4: reg = 0x34; val = 1<<31; break; case 5: case 6: reg = 0x39; val = 1<<31; break; case 7: case 8: case 9: reg = 0x37; val = 1<chip_info; dev_index = dev->path.pci.devfn >> 3; if (dev_index < 4 || dev_index > 0xa) { return; } switch (cfg->gpp3a_configuration) { case 0x1: /* 4:2:0:0:0:0 */ slave_cpl = (u8 *)&pGpp420000; break; case 0x2: /* 4:1:1:0:0:0 */ slave_cpl = (u8 *)&pGpp411000; break; case 0xC: /* 2:2:2:0:0:0 */ slave_cpl = (u8 *)&pGpp222000; break; case 0xA: /* 2:2:1:1:0:0 */ slave_cpl = (u8 *)&pGpp221100; break; case 0x4: /* 2:1:1:1:1:0 */ slave_cpl = (u8 *)&pGpp211110; break; case 0xB: /* 1:1:1:1:1:1 */ slave_cpl = (u8 *)&pGpp111111; break; default: /* shouldn't be here. */ printk(BIOS_WARNING, "buggy gpp3a_configuration\n"); return; } value = slave_cpl[dev_index - 4]; if (value != 0) { set_pcie_enable_bits(dev, 0x10, 0x3f << 8, value << 8); set_pcie_enable_bits(dev, 0x20, 1 << 11, 1 << 11); } } /* * Enabling Dynamic Slave CPL Buffer Allocation Feature for PCIE-GPP1/PCIE-GPP2 Ports * PcieLibCplBufferAllocation */ static void gpp12_cpl_buf_alloc(struct device *nb_dev, struct device *dev) { u8 gpp_cfg; u8 value; u8 dev_index; dev_index = dev->path.pci.devfn >> 3; struct southbridge_amd_sr5650_config *cfg = (struct southbridge_amd_sr5650_config *)nb_dev->chip_info; if (dev_index < 4) { gpp_cfg = cfg->gpp1_configuration; } else if (dev_index > 0xa) { gpp_cfg = cfg->gpp2_configuration; } else { return; } if (gpp_cfg == 0) { /* Configuration 16:0, leave the default value */ } else if (gpp_cfg == 1) { /* Configuration 8:8 */ value = 0x60; set_pcie_enable_bits(dev, 0x10, 0x3f << 8, value << 8); set_pcie_enable_bits(dev, 0x20, 1 << 11, 1 << 11); } else { printk(BIOS_DEBUG, "buggy gpp configuration\n"); } } #if 1 /* BTS report error without this function. But some board * fail to boot. Leave it here for future debug. */ /* * Enable LCLK clock gating */ static void EnableLclkGating(struct device *dev) { u8 port; u32 reg = 0; u32 mask = 0; u32 value = 0; struct device *nb_dev = pcidev_on_root(0x0, 0); struct device *clk_f1 = pcidev_on_root(0x0, 1); reg = 0xE8; port = dev->path.pci.devfn >> 3; switch (port) { //PCIE_CORE_INDEX_GPP1 case 2: case 3: reg = 0x94; mask = 1 << 16; break; //PCIE_CORE_INDEX_GPP2 case 11: case 12: value = 1 << 28; break; //PCIE_CORE_INDEX_GPP3a case 4 ... 7: case 9: case 10: value = 1 << 31; break; //PCIE_CORE_INDEX_GPP3b; case 13: value = 1 << 25; break; //PCIE_CORE_INDEX_SB; case 8: reg = 0x94; mask = 1 << 24; break; default: break; } /* enable access func1 */ set_nbcfg_enable_bits(nb_dev, 0x4C, 1 << 0, 1 << 0); set_nbcfg_enable_bits(clk_f1, reg, mask, value); } #endif /***************************************** * Compliant with CIM_33's PCIEGPPInit * nb_dev: * root bridge struct * dev: * p2p bridge struct * port: * p2p bridge number, 4-10 *****************************************/ void sr5650_gpp_sb_init(struct device *nb_dev, struct device *dev, u32 port) { uint8_t training_ok = 1; u32 gpp_sb_sel = 0; struct southbridge_amd_sr5650_config *cfg = (struct southbridge_amd_sr5650_config *)nb_dev->chip_info; printk(BIOS_DEBUG, "%s: nb_dev=0x%p, dev=0x%p, port=0x%x\n", __func__, nb_dev, dev, port); switch (port) { case 2: case 3: gpp_sb_sel = PCIE_CORE_INDEX_GPP1; break; case 4 ... 7: case 9: case 10: gpp_sb_sel = PCIE_CORE_INDEX_GPP3a; break; case 8: gpp_sb_sel = PCIE_CORE_INDEX_SB; break; case 11: case 12: gpp_sb_sel = PCIE_CORE_INDEX_GPP2; break; case 13: gpp_sb_sel = PCIE_CORE_INDEX_GPP3b; break; } /* Init common Core registers */ set_pcie_enable_bits(dev, 0xB1, 1 << 28 | 1 << 23 | 1 << 20 | 1 << 19, 1 << 28 | 1 << 23 | 1 << 20 | 1 << 19); if (gpp_sb_sel == PCIE_CORE_INDEX_GPP3a) { set_pcie_enable_bits(dev, 0xB1, 1 << 22, 1 << 22); /* 4.3.3.2.3 Step 10: Dynamic Slave CPL Buffer Allocation */ gpp3a_cpl_buf_alloc(nb_dev, dev); } if (gpp_sb_sel == PCIE_CORE_INDEX_GPP1 || gpp_sb_sel == PCIE_CORE_INDEX_GPP2) { gpp12_cpl_buf_alloc(nb_dev, dev); } set_pcie_enable_bits(dev, 0xA1, (1 << 26) | (1 << 24) | (1 << 11), 1 << 11); set_pcie_enable_bits(dev, 0xA0, 0x0000FFF0, 0x6830); // PCIE should not ignore malformed packet error or ATS request set_pcie_enable_bits(dev, 0x70, 1 << 12, 0); //Step 14.1: Advertising Hot Plug Capabilities set_pcie_enable_bits(dev, 0x10, 1 << 4, 1 << 4); //Enable power fault set_pcie_enable_bits(nb_dev, 0xC1 | gpp_sb_sel, 1 << 0, 1 << 0); /* init GPP core */ /* 4.4.2.step13.1. Sets RCB completion timeout to be 200ms */ pci_ext_write_config32(nb_dev, dev, 0x80, 0xF << 0, 0x6 << 0); /* 4.4.2.step13.2. RCB completion timeout on link down to shorten enumeration time. */ set_pcie_enable_bits(dev, 0x70, 1 << 19, 1 << 19); /* 4.4.2.step13.3. Enable slave ordering rules */ set_pcie_enable_bits(nb_dev, 0x20 | gpp_sb_sel, 1 << 8, 0 << 8); /* 4.4.2.step13.4. Sets DMA payload size to 64 bytes. */ set_pcie_enable_bits(nb_dev, 0x10 | gpp_sb_sel, 7 << 10, 4 << 10); /* 4.4.2.step13.5. Set REGS_DLP_IGNORE_IN_L1_EN to ignore DLLPs during L1 so that Tx Clk can be turned off. */ set_pcie_enable_bits(nb_dev, 0x02 | gpp_sb_sel, 1 << 0 | 1 << 8, 1 << 0 | 1 << 8); // add bit 8 from CIMx /* 4.4.2.step13.6. Set REGS_LC_ALLOW_TX_L1_CONTROL to allow TX to prevent LC from going to L1 when there are outstanding completions.*/ set_pcie_enable_bits(dev, 0x02, 1 << 15, 1 << 15); /* Enables the PLL power down when all lanes are inactive. * It should be on in GPP. */ if (gpp_sb_sel == PCIE_CORE_INDEX_GPP3a || gpp_sb_sel == PCIE_CORE_INDEX_GPP3b || gpp_sb_sel == PCIE_CORE_INDEX_SB) { set_pcie_enable_bits(nb_dev, 0x02 | gpp_sb_sel, 1 << 3, 1 << 3); } /* 4.4.2.step13.7. Set REGS_LC_DONT_GO_TO_L0S_IF_L1_ARMED to prevent lc to go to from L0 to Rcv_L0s if L1 is armed. */ set_pcie_enable_bits(dev, 0xA1, 1 << 11, 1 << 11); /* 4.4.2.step13.8. CMGOOD_OVERRIDE for all five PCIe cores. */ set_nbmisc_enable_bits(nb_dev, 0x22, 1 << 27, 1 << 27); /* 4.4.2.step13.9. Prevents Electrical Idle from causing a transition from Rcv_L0 to Rcv_L0s. */ set_pcie_enable_bits(dev, 0xB1, 1 << 20, 1 << 20); /* 4.4.2.step13.10. Prevents the LTSSM from going to Rcv_L0s if it has already acknowledged a request to go to L1 but it has not transitioned there yet. */ /* seems the same as step13.7 */ set_pcie_enable_bits(dev, 0xA1, 1 << 11, 1 << 11); /* 4.4.2.step13.11. Transmits FTS before Recovery. */ set_pcie_enable_bits(dev, 0xA3, 1 << 9, 1 << 9); /* 4.4.2.step13.12. Sets TX arbitration algorithm to round robin for PCIE-GPP1, PCIE-GPP2, PCIE-GPP3a and PCIE-GPP3b cores only. */ //if (gpp_sb_sel != PCIE_CORE_INDEX_SB) /* RPR NOT set SB_CORE, BTS set SB_CORE, we comply with BTS */ set_pcie_enable_bits(nb_dev, 0x1C | gpp_sb_sel, 0x7FF, 0x109); /* 4.4.2.step13.13. Sets number of TX Clocks to drain TX Pipe to 0x3.*/ set_pcie_enable_bits(dev, 0xA0, 0xF << 4, 0x3 << 4); /* 4.4.2.step13.14. Lets PI use Electrical Idle from PHY when turning off PLL in L1 at Gen 2 speed instead of Inferred Electrical Idle. NOTE: LC still uses Inferred Electrical Idle. */ set_pcie_enable_bits(nb_dev, 0x40 | gpp_sb_sel, 3 << 14, 2 << 14); /* 4.4.2.step13.15. Turn on rx_fronten_en for all active lanes upon exit from Electrical Idle, rather than being tied to PLL_PDNB. */ set_pcie_enable_bits(nb_dev, 0xC2 | gpp_sb_sel, 1 << 25, 1 << 25); /* 4.4.2.step13.16. Advertises TX L0s and L1 exit latency. TX L0s exit latency to be 100b: 512ns to less than 1us; L1 exit latency to be 011b: 4us to less than 8us. For Hot-Plug Slots: Advertise TX L0s and L1 exit latency. TX L0s exit latency to be 110b: 2us to 4us. L1 exit latency to be 111b: more than 64us.*/ //set_pcie_enable_bits(dev, 0xC1, 0xF << 0, 0xC << 0); /* 0xF for hotplug. */ set_pcie_enable_bits(dev, 0xC1, 0xF << 0, 0xF << 0); /* 0xF for hotplug. */ /* 4.4.2.step13.17. Always ACK an ASPM L1 entry DLLP to workaround credit control issue on PM_NAK message of SB700 and SB800. */ /* 4.4.4.step13.18. To allow advertising Gen 2 capabilities to Southbridge. */ if (port == 8) { set_pcie_enable_bits(dev, 0xA0, 1 << 23, 1 << 23); set_pcie_enable_bits(nb_dev, 0xC1 | gpp_sb_sel, 1 << 1, 1 << 1); } /* 4.4.2.step13.19. CMOS Option (Gen 2 AUTO-Part 1 - Enabled by Default) */ /* 4.4.2.step13.20. CMOS Option (RC Advertised Gen 2-Part1 - Disabled by Default)*/ set_nbcfg_enable_bits(dev, 0x88, 0xF << 0, 0x2 << 0); /* Disables GEN2 capability of the device. * RPR typo- it says enable but the bit setting says disable. * Disable it here and we enable it later. */ set_pcie_enable_bits(dev, 0xA4, 1 << 0, 1 << 0); /* 4.4.2.step13.21. Legacy Hot Plug -CMOS Option */ /* NOTE: This feature can be enabled only for Hot-Plug slots implemented on SR5690 platform. */ /* 4.4.2.step13.22. Native PCIe Mode -CMOS Option */ /* Enable native PME. */ set_pcie_enable_bits(dev, 0x10, 1 << 3, 1 < 3); /* This bit when set indicates that the PCIe Link associated with this port is connected to a slot. */ pci_ext_write_config32(nb_dev, dev, 0x5a, 1 << 8, 1 << 8); /* This bit when set indicates that this slot is capable of supporting Hot-Plug operations. */ set_nbcfg_enable_bits(dev, 0x6C, 1 << 6, 1 << 6); /* Enables flushing of TLPs when Data Link is down. */ set_pcie_enable_bits(dev, 0x20, 1 << 19, 0 << 19); /* 4.4.2.step14. Server Class Hot Plug Feature. NOTE: This feature is not supported on SR5670 and SR5650 */ /* 4.4.2 step14.1: Advertising Hot Plug Capabilities */ /* 4.4.2.step14.2: Firmware Upload */ /* 4.4.2.Step14.3: SBIOS Acknowledgment to Firmware of Successful Firmware Upload */ /* step14.4 */ /* step14.5 */ /* skip */ /* CIMx LPC Deadlock workaround - Enable Memory Write Map*/ if (gpp_sb_sel == PCIE_CORE_INDEX_SB) { set_pcie_enable_bits(nb_dev, 0x10 | gpp_sb_sel, 1 << 9, 1 << 9); set_htiu_enable_bits(nb_dev, 0x06, 1 << 26, 1 << 26); } /* This CPL setup requires more than this one register and should be done in gpp_core. * The additional setup is for the different revisions. */ /* CIMx CommonPortInit settings that are not set above. */ pci_ext_write_config32(nb_dev, dev, 0x88, 0xF0, 1 << 0); /* LINK_CRTL2 */ if (port == 8) set_pcie_enable_bits(dev, 0xA0, 0, 1 << 23); #if 0 //SR56x0 pcie Gen2 code is not tested yet, we should enable it again when test finished. /* set automatic Gen2 support, needs mainboard config option as Gen2 can cause issues on some platforms. */ init_gen2(nb_dev, dev, port); set_pcie_enable_bits(dev, 0xA4, 1 << 29, 1 << 29); set_pcie_enable_bits(dev, 0xC0, 1 << 15, 0); set_pcie_enable_bits(dev, 0xA2, 1 << 13, 0); #endif /* Hotplug Support - bit5 + bit6 capable and surprise */ pci_ext_write_config32(nb_dev, dev, 0x6c, 0x60, 0x60); /* Set interrupt pin info 0x3d */ pci_ext_write_config32(nb_dev, dev, 0x3c, 1 << 8, 1 << 8); /* 5.12.9.3 Hotplug step 1 - NB_PCIE_ROOT_CTRL - enable pm irq The RPR is wrong - this is not a PCIEND_P register */ pci_ext_write_config32(nb_dev, dev, 0x74, 1 << 3, 1 << 3); /* 5.12.9.3 step 2 - PCIEP_PORT_CNTL - enable hotplug messages */ if (port != 8) set_pcie_enable_bits(dev, 0x10, 1 << 2, 1 << 2); /* Not sure about this PME setup */ /* Native PME */ set_pcie_enable_bits(dev, 0x10, 1 << 3, 1 << 3); /* Not set in CIMx */ /* PME Enable */ pci_ext_write_config32(nb_dev, dev, 0x54, 1 << 8, 1 << 8); /* Not in CIMx */ /* 4.4.3 Training for GPP devices */ /* init GPP */ switch (port) { case 2: case 3: case 4: /* GPP_SB */ case 5: case 6: case 7: case 9: /*GPP*/ case 10: case 11: case 12: case 13: /* 4.4.2.step13.5. Blocks DMA traffic during C3 state */ set_pcie_enable_bits(dev, 0x10, 1 << 0, 0 << 0); /* Enables TLP flushing */ set_pcie_enable_bits(dev, 0x20, 1 << 19, 0 << 19); /* check port enable */ if (cfg->port_enable & (1 << port)) { uint32_t hw_port = port; switch (cfg->gpp3a_configuration) { case 0x1: /* 4:2:0:0:0:0 */ if (hw_port == 9) hw_port = 4 + 1; break; case 0x2: /* 4:1:1:0:0:0 */ if (hw_port == 9) hw_port = 4 + 1; else if (hw_port == 10) hw_port = 4 + 2; break; case 0xc: /* 2:2:2:0:0:0 */ if (hw_port == 6) hw_port = 4 + 1; else if (hw_port == 9) hw_port = 4 + 2; break; case 0xa: /* 2:2:1:1:0:0 */ if (hw_port == 6) hw_port = 4 + 1; else if (hw_port == 9) hw_port = 4 + 2; else if (hw_port == 10) hw_port = 4 + 3; break; case 0x4: /* 2:1:1:1:1:0 */ if (hw_port == 6) hw_port = 4 + 1; else if (hw_port == 7) hw_port = 4 + 2; else if (hw_port == 9) hw_port = 4 + 3; else if (hw_port == 10) hw_port = 4 + 4; break; case 0xb: /* 1:1:1:1:1:1 */ break; default: /* shouldn't be here. */ printk(BIOS_WARNING, "invalid gpp3a_configuration\n"); return; } PcieReleasePortTraining(nb_dev, dev, hw_port); if (!(AtiPcieCfg.Config & PCIE_GPP_COMPLIANCE)) { u8 res = PcieTrainPort(nb_dev, dev, hw_port); printk(BIOS_DEBUG, "%s: port=0x%x hw_port=0x%x result=%d\n", __func__, port, hw_port, res); if (res) { AtiPcieCfg.PortDetect |= 1 << port; } else { /* Even though nothing is attached to this port * the port needs to be "enabled" to obtain * a bus number from the PCI resource allocator */ training_ok = 0; dev->enabled = 1; } } } break; case 8: /* SB */ break; default: break; } /* Re-enable RC ordering logic after training (from CIMx)*/ set_pcie_enable_bits(nb_dev, 0x20 | gpp_sb_sel, 1 << 9, 0); /* Advertising Hot Plug Capabilities */ pci_ext_write_config32(nb_dev, dev, 0x6c, 0x04001B, 0x00001B); /* PCIE Late Init (CIMx late init - Maybe move somewhere else? Later in the coreboot PCI device enum?) */ /* Set Slot Number */ pci_ext_write_config32(nb_dev, dev, 0x6c, 0x1FFF << 19, port << 19); /* Set Slot present 0x5A*/ pci_ext_write_config32(nb_dev, dev, 0x58, 1 << 24, 1 << 24); //PCIE-GPP1 TXCLK Clock Gating In L1 Late Core setting - Maybe move somewhere else? */ set_pcie_enable_bits(nb_dev, 0x11 | gpp_sb_sel, 0xF << 0, 0x0C << 0); /* Enable powering down PLLs in L1 or L23 Ready states. * Turns off PHY`s RX FRONTEND during L1 when PLL power down is enabled */ set_pcie_enable_bits(nb_dev, 0x40 | gpp_sb_sel, 0x1219, 0x1009); /* 4.4..7.1 TXCLK Gating in L1, Enables powering down TXCLK clock pads on the receive side. */ set_pcie_enable_bits(nb_dev, 0x40 | gpp_sb_sel, 1 << 6, 1 << 6); /* Step 20: Disables immediate RCB timeout on link down */ if (!((pci_read_config32(dev, 0x6C) >> 6) & 0x01)) { set_pcie_enable_bits(dev, 0x70, 1 << 19, 0 << 19); } /* Step 27: LCLK Gating */ EnableLclkGating(dev); /* Set Common Clock */ /* If dev present, set PcieCapPtr+0x10, BIT6); * set dev 0x68,bit 6 * retrain link, set dev, 0x68 bit 5; * wait dev 0x6B bit3 clear */ if ((port == 8) || (!training_ok)) { PciePowerOffGppPorts(nb_dev, dev, port); /* This is run for all ports that are not hotplug and don't detect devices */ } } /** * Step 21: Register Locking * Lock HWInit Register of each pcie core */ static void lock_hwinitreg(struct device *nb_dev) { /* Step 21: Register Locking, Lock HWInit Register */ set_pcie_enable_bits(nb_dev, 0x10 | PCIE_CORE_INDEX_GPP1, 1 << 0, 1 << 0); set_pcie_enable_bits(nb_dev, 0x10 | PCIE_CORE_INDEX_SB, 1 << 0, 1 << 0); set_pcie_enable_bits(nb_dev, 0x10 | PCIE_CORE_INDEX_GPP2, 1 << 0, 1 << 0); set_pcie_enable_bits(nb_dev, 0x10 | PCIE_CORE_INDEX_GPP3a, 1 << 0, 1 << 0); set_pcie_enable_bits(nb_dev, 0x10 | PCIE_CORE_INDEX_GPP3b, 1 << 0, 1 << 0); } /** * Lock HWInit Register */ void sr56x0_lock_hwinitreg(void) { struct device *nb_dev = pcidev_on_root(0, 0); /* Lock HWInit Register */ lock_hwinitreg(nb_dev); /* Lock HWInit Register NBMISCIND:0x0 NBCNTL[7] HWINIT_WR_LOCK */ set_nbmisc_enable_bits(nb_dev, 0x00, 1 << 7, 1 << 7); /* Hide clock configuration PCI device HIDE_CLKCFG_HEADER */ set_nbmisc_enable_bits(nb_dev, 0x00, 0x00000100, 1 << 8); } /***************************************** * Compliant with CIM_33's PCIEConfigureGPPCore *****************************************/ void config_gpp_core(struct device *nb_dev, struct device *sb_dev) { u32 reg; reg = nbmisc_read_index(nb_dev, 0x20); if (AtiPcieCfg.Config & PCIE_ENABLE_STATIC_DEV_REMAP) reg &= 0xfffffffd; /* set bit1 = 0 */ else reg |= 0x2; /* set bit1 = 1 */ nbmisc_write_index(nb_dev, 0x20, reg); /* Must perform PCIE-GPP1, GPP2, GPP3a global reset anyway */ reg = nbmisc_read_index(nb_dev, 0x8); reg |= (1 << 31) | (1 << 15) | (1 << 13); //asserts nbmisc_write_index(nb_dev, 0x8, reg); reg &= ~((1 << 31) | (1 << 15) | (1 << 13)); //De-asserts nbmisc_write_index(nb_dev, 0x8, reg); switching_gpp3a_configurations(nb_dev, sb_dev); switching_gpp1_configurations(nb_dev, sb_dev); switching_gpp2_configurations(nb_dev, sb_dev); ValidatePortEn(nb_dev); } /***************************************** * Compliant with CIM_33's PCIEMiscClkProg *****************************************/ void pcie_config_misc_clk(struct device *nb_dev) { u32 reg; reg = pci_read_config32(nb_dev, 0x4c); reg |= 1 << 0; pci_write_config32(nb_dev, 0x4c, reg); #if 0 /* TODO: Check the mics clock later. */ pci_devfn_t d0f1 = PCI_DEV(0, 0, 1); if (AtiPcieCfg.Config & PCIE_GFX_CLK_GATING) { /* TXCLK Clock Gating */ set_nbmisc_enable_bits(nb_dev, 0x07, 3 << 0, 3 << 0); set_nbmisc_enable_bits(nb_dev, 0x07, 1 << 22, 1 << 22); set_pcie_enable_bits(nb_dev, 0x11 | PCIE_CORE_INDEX_GFX, (3 << 6) | (~0xf), 3 << 6); /* LCLK Clock Gating */ reg = pci_io_read_config32(d0f1, 0x94); reg &= ~(1 << 16); pci_io_write_config32(d0f1, 0x94, reg); } if (AtiPcieCfg.Config & PCIE_GPP_CLK_GATING) { /* TXCLK Clock Gating */ set_nbmisc_enable_bits(nb_dev, 0x07, 3 << 4, 3 << 4); set_nbmisc_enable_bits(nb_dev, 0x07, 1 << 22, 1 << 22); set_pcie_enable_bits(nb_dev, 0x11 | PCIE_CORE_INDEX_SB, (3 << 6) | (~0xf), 3 << 6); /* LCLK Clock Gating */ reg = pci_io_read_config32(d0f1, 0x94); reg &= ~(1 << 24); pci_io_write_config32(d0f1, 0x94, reg); } #endif reg = pci_read_config32(nb_dev, 0x4c); reg &= ~(1 << 0); pci_write_config32(nb_dev, 0x4c, reg); }