diff options
Diffstat (limited to 'src/soc/intel/skylake/sata.c')
-rw-r--r-- | src/soc/intel/skylake/sata.c | 264 |
1 files changed, 264 insertions, 0 deletions
diff --git a/src/soc/intel/skylake/sata.c b/src/soc/intel/skylake/sata.c new file mode 100644 index 0000000000..d3cf52527d --- /dev/null +++ b/src/soc/intel/skylake/sata.c @@ -0,0 +1,264 @@ +/* + * 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 <arch/io.h> +#include <console/console.h> +#include <device/device.h> +#include <device/pci.h> +#include <device/pci_ids.h> +#include <delay.h> +#include <soc/iobp.h> +#include <soc/ramstage.h> +#include <soc/rcba.h> +#include <soc/sata.h> +#include <soc/intel/broadwell/chip.h> + +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 &= ~0xf; + 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 ^ 0xf) << 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_SP0_SECRT88, + ~(SATA_SECRT88_VADJ_MASK << + SATA_SECRT88_VADJ_SHIFT), + (config->sata_port0_gen3_tx & + SATA_SECRT88_VADJ_MASK) + << SATA_SECRT88_VADJ_SHIFT); + + if (config->sata_port1_gen3_tx) + pch_iobp_update(SATA_IOBP_SP1_SECRT88, + ~(SATA_SECRT88_VADJ_MASK << + SATA_SECRT88_VADJ_SHIFT), + (config->sata_port1_gen3_tx & + SATA_SECRT88_VADJ_MASK) + << SATA_SECRT88_VADJ_SHIFT); + + /* 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); + + reg32 = pci_read_config32(dev, 0x98); + reg32 |= 1 << 29; + pci_write_config32(dev, 0x98, 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 ^ 0xf) << 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, +}; |