/* * This file is part of the coreboot project. * * Copyright (C) 2008-2009 coresystems GmbH * Copyright (C) 2014 Google 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 */ #include #include #include #include #include #include #include #include #include #include #include static inline u32 sir_read(struct device *dev, int idx) { pci_write_config32(dev, SATA_SIRI, idx); return pci_read_config32(dev, SATA_SIRD); } static inline void sir_write(struct device *dev, int idx, u32 value) { pci_write_config32(dev, SATA_SIRI, idx); pci_write_config32(dev, SATA_SIRD, value); } static void sata_init(struct device *dev) { config_t *config = dev->chip_info; u32 reg32; u8 *abar; u16 reg16; int port; printk(BIOS_DEBUG, "SATA: Initializing controller in AHCI mode.\n"); /* Enable BARs */ pci_write_config16(dev, PCI_COMMAND, 0x0007); /* Set Interrupt Line */ /* Interrupt Pin is set by D31IP.PIP */ pci_write_config8(dev, PCI_INTERRUPT_LINE, 0x0a); /* Set timings */ pci_write_config16(dev, IDE_TIM_PRI, IDE_DECODE_ENABLE); pci_write_config16(dev, IDE_TIM_SEC, IDE_DECODE_ENABLE); /* for AHCI, Port Enable is managed in memory mapped space */ reg16 = pci_read_config16(dev, 0x92); reg16 &= ~0x3f; reg16 |= 0x8000 | config->sata_port_map; pci_write_config16(dev, 0x92, reg16); udelay(2); /* Setup register 98h */ reg32 = pci_read_config32(dev, 0x98); reg32 &= ~((1 << 31) | (1 << 30)); reg32 |= 1 << 23; reg32 |= 1 << 24; /* Enable MPHY Dynamic Power Gating */ pci_write_config32(dev, 0x98, reg32); /* Setup register 9Ch */ reg16 = 0; /* Disable alternate ID */ reg16 = 1 << 5; /* BWG step 12 */ pci_write_config16(dev, 0x9c, reg16); /* SATA Initialization register */ reg32 = 0x183; reg32 |= (config->sata_port_map ^ 0x3f) << 24; reg32 |= (config->sata_devslp_mux & 1) << 15; pci_write_config32(dev, 0x94, reg32); /* Initialize AHCI memory-mapped space */ abar = (u8 *)(pci_read_config32(dev, PCI_BASE_ADDRESS_5)); printk(BIOS_DEBUG, "ABAR: %p\n", abar); /* CAP (HBA Capabilities) : enable power management */ reg32 = read32(abar + 0x00); reg32 |= 0x0c006000; /* set PSC+SSC+SALP+SSS */ reg32 &= ~0x00020060; /* clear SXS+EMS+PMS */ reg32 |= (1 << 18); /* SAM: SATA AHCI MODE ONLY */ write32(abar + 0x00, reg32); /* PI (Ports implemented) */ write32(abar + 0x0c, config->sata_port_map); (void) read32(abar + 0x0c); /* Read back 1 */ (void) read32(abar + 0x0c); /* Read back 2 */ /* CAP2 (HBA Capabilities Extended)*/ if (config->sata_devslp_disable) { reg32 = read32(abar + 0x24); reg32 &= ~(1 << 3); write32(abar + 0x24, reg32); } else { /* Enable DEVSLP */ reg32 = read32(abar + 0x24); reg32 |= (1 << 5)|(1 << 4)|(1 << 3)|(1 << 2); write32(abar + 0x24, reg32); for (port = 0; port < 4; port++) { if (!(config->sata_port_map & (1 << port))) continue; reg32 = read32(abar + 0x144 + (0x80 * port)); reg32 |= (1 << 1); /* DEVSLP DSP */ write32(abar + 0x144 + (0x80 * port), reg32); } } /* * Static Power Gating for unused ports */ reg32 = RCBA32(0x3a84); /* Port 3 and 2 disabled */ if ((config->sata_port_map & ((1 << 3)|(1 << 2))) == 0) reg32 |= (1 << 24) | (1 << 26); /* Port 1 and 0 disabled */ if ((config->sata_port_map & ((1 << 1)|(1 << 0))) == 0) reg32 |= (1 << 20) | (1 << 18); RCBA32(0x3a84) = reg32; /* Set Gen3 Transmitter settings if needed */ if (config->sata_port0_gen3_tx) pch_iobp_update(SATA_IOBP_SP0G3IR, 0, config->sata_port0_gen3_tx); if (config->sata_port1_gen3_tx) pch_iobp_update(SATA_IOBP_SP1G3IR, 0, config->sata_port1_gen3_tx); /* Set Gen3 DTLE DATA / EDGE registers if needed */ if (config->sata_port0_gen3_dtle) { pch_iobp_update(SATA_IOBP_SP0DTLE_DATA, ~(SATA_DTLE_MASK << SATA_DTLE_DATA_SHIFT), (config->sata_port0_gen3_dtle & SATA_DTLE_MASK) << SATA_DTLE_DATA_SHIFT); pch_iobp_update(SATA_IOBP_SP0DTLE_EDGE, ~(SATA_DTLE_MASK << SATA_DTLE_EDGE_SHIFT), (config->sata_port0_gen3_dtle & SATA_DTLE_MASK) << SATA_DTLE_EDGE_SHIFT); } if (config->sata_port1_gen3_dtle) { pch_iobp_update(SATA_IOBP_SP1DTLE_DATA, ~(SATA_DTLE_MASK << SATA_DTLE_DATA_SHIFT), (config->sata_port1_gen3_dtle & SATA_DTLE_MASK) << SATA_DTLE_DATA_SHIFT); pch_iobp_update(SATA_IOBP_SP1DTLE_EDGE, ~(SATA_DTLE_MASK << SATA_DTLE_EDGE_SHIFT), (config->sata_port1_gen3_dtle & SATA_DTLE_MASK) << SATA_DTLE_EDGE_SHIFT); } /* * Additional Programming Requirements for Power Optimizer */ /* Step 1 */ sir_write(dev, 0x64, 0x883c9003); /* Step 2: SIR 68h[15:0] = 880Ah */ reg32 = sir_read(dev, 0x68); reg32 &= 0xffff0000; reg32 |= 0x880a; sir_write(dev, 0x68, reg32); /* Step 3: SIR 60h[3] = 1 */ reg32 = sir_read(dev, 0x60); reg32 |= (1 << 3); sir_write(dev, 0x60, reg32); /* Step 4: SIR 60h[0] = 1 */ reg32 = sir_read(dev, 0x60); reg32 |= (1 << 0); sir_write(dev, 0x60, reg32); /* Step 5: SIR 60h[1] = 1 */ reg32 = sir_read(dev, 0x60); reg32 |= (1 << 1); sir_write(dev, 0x60, reg32); /* Clock Gating */ sir_write(dev, 0x70, 0x3f00bf1f); sir_write(dev, 0x54, 0xcf000f0f); sir_write(dev, 0x58, 0x00190000); RCBA32_AND_OR(0x333c, 0xffcfffff, 0x00c00000); reg32 = pci_read_config32(dev, 0x300); reg32 |= (1 << 17) | (1 << 16) | (1 << 19); reg32 |= (1 << 31) | (1 << 30) | (1 << 29); pci_write_config32(dev, 0x300, reg32); /* Register Lock */ reg32 = pci_read_config32(dev, 0x9c); reg32 |= (1 << 31); pci_write_config32(dev, 0x9c, reg32); } /* * Set SATA controller mode early so the resource allocator can * properly assign IO/Memory resources for the controller. */ static void sata_enable(device_t dev) { /* Get the chip configuration */ config_t *config = dev->chip_info; u16 map = 0x0060; map |= (config->sata_port_map ^ 0x3f) << 8; pci_write_config16(dev, 0x90, map); } static struct device_operations sata_ops = { .read_resources = &pci_dev_read_resources, .set_resources = &pci_dev_set_resources, .enable_resources = &pci_dev_enable_resources, .init = &sata_init, .enable = &sata_enable, .ops_pci = &broadwell_pci_ops, }; static const unsigned short pci_device_ids[] = { 0x9c03, 0x9c05, 0x9c07, 0x9c0f, /* LynxPoint-LP */ 0x9c83, 0x9c85, 0x282a, 0x9c87, 0x282a, 0x9c8f, /* WildcatPoint */ 0 }; static const struct pci_driver pch_sata __pci_driver = { .ops = &sata_ops, .vendor = PCI_VENDOR_ID_INTEL, .devices = pci_device_ids, };