| /* |
| * From Coreboot |
| * Copyright (C) 2008-2009 coresystems GmbH |
| * |
| * SPDX-License-Identifier: GPL-2.0 |
| */ |
| |
| #include <common.h> |
| #include <fdtdec.h> |
| #include <asm/io.h> |
| #include <asm/pci.h> |
| #include <asm/arch/pch.h> |
| #include <asm/arch/bd82x6x.h> |
| |
| static inline u32 sir_read(pci_dev_t dev, int idx) |
| { |
| pci_write_config32(dev, SATA_SIRI, idx); |
| return pci_read_config32(dev, SATA_SIRD); |
| } |
| |
| static inline void sir_write(pci_dev_t dev, int idx, u32 value) |
| { |
| pci_write_config32(dev, SATA_SIRI, idx); |
| pci_write_config32(dev, SATA_SIRD, value); |
| } |
| |
| static void common_sata_init(pci_dev_t dev, unsigned int port_map) |
| { |
| u32 reg32; |
| u16 reg16; |
| |
| /* Set IDE I/O Configuration */ |
| reg32 = SIG_MODE_PRI_NORMAL | FAST_PCB1 | FAST_PCB0 | PCB1 | PCB0; |
| pci_write_config32(dev, IDE_CONFIG, reg32); |
| |
| /* Port enable */ |
| reg16 = pci_read_config16(dev, 0x92); |
| reg16 &= ~0x3f; |
| reg16 |= port_map; |
| pci_write_config16(dev, 0x92, reg16); |
| |
| /* SATA Initialization register */ |
| port_map &= 0xff; |
| pci_write_config32(dev, 0x94, ((port_map ^ 0x3f) << 24) | 0x183); |
| } |
| |
| void bd82x6x_sata_init(pci_dev_t dev, const void *blob, int node) |
| { |
| unsigned int port_map, speed_support, port_tx; |
| struct pci_controller *hose = pci_bus_to_hose(0); |
| const char *mode; |
| u32 reg32; |
| u16 reg16; |
| |
| debug("SATA: Initializing...\n"); |
| |
| /* SATA configuration */ |
| port_map = fdtdec_get_int(blob, node, "intel,sata-port-map", 0); |
| speed_support = fdtdec_get_int(blob, node, |
| "sata_interface_speed_support", 0); |
| |
| /* Enable BARs */ |
| pci_write_config16(dev, PCI_COMMAND, 0x0007); |
| |
| mode = fdt_getprop(blob, node, "intel,sata-mode", NULL); |
| if (!mode || !strcmp(mode, "ahci")) { |
| u32 abar; |
| |
| debug("SATA: Controller in AHCI mode\n"); |
| |
| /* Set Interrupt Line, Interrupt Pin is set by D31IP.PIP */ |
| pci_write_config8(dev, INTR_LN, 0x0a); |
| |
| /* Set timings */ |
| pci_write_config16(dev, IDE_TIM_PRI, IDE_DECODE_ENABLE | |
| IDE_ISP_3_CLOCKS | IDE_RCT_1_CLOCKS | |
| IDE_PPE0 | IDE_IE0 | IDE_TIME0); |
| pci_write_config16(dev, IDE_TIM_SEC, IDE_DECODE_ENABLE | |
| IDE_ISP_5_CLOCKS | IDE_RCT_4_CLOCKS); |
| |
| /* Sync DMA */ |
| pci_write_config16(dev, IDE_SDMA_CNT, IDE_PSDE0); |
| pci_write_config16(dev, IDE_SDMA_TIM, 0x0001); |
| |
| common_sata_init(dev, 0x8000 | port_map); |
| |
| /* Initialize AHCI memory-mapped space */ |
| abar = pci_read_bar32(hose, dev, 5); |
| debug("ABAR: %08X\n", abar); |
| /* CAP (HBA Capabilities) : enable power management */ |
| reg32 = readl(abar + 0x00); |
| reg32 |= 0x0c006000; /* set PSC+SSC+SALP+SSS */ |
| reg32 &= ~0x00020060; /* clear SXS+EMS+PMS */ |
| /* Set ISS, if available */ |
| if (speed_support) { |
| reg32 &= ~0x00f00000; |
| reg32 |= (speed_support & 0x03) << 20; |
| } |
| writel(reg32, abar + 0x00); |
| /* PI (Ports implemented) */ |
| writel(port_map, abar + 0x0c); |
| (void) readl(abar + 0x0c); /* Read back 1 */ |
| (void) readl(abar + 0x0c); /* Read back 2 */ |
| /* CAP2 (HBA Capabilities Extended)*/ |
| reg32 = readl(abar + 0x24); |
| reg32 &= ~0x00000002; |
| writel(reg32, abar + 0x24); |
| /* VSP (Vendor Specific Register */ |
| reg32 = readl(abar + 0xa0); |
| reg32 &= ~0x00000005; |
| writel(reg32, abar + 0xa0); |
| } else if (!strcmp(mode, "combined")) { |
| debug("SATA: Controller in combined mode\n"); |
| |
| /* No AHCI: clear AHCI base */ |
| pci_write_bar32(hose, dev, 5, 0x00000000); |
| /* And without AHCI BAR no memory decoding */ |
| reg16 = pci_read_config16(dev, PCI_COMMAND); |
| reg16 &= ~PCI_COMMAND_MEMORY; |
| pci_write_config16(dev, PCI_COMMAND, reg16); |
| |
| pci_write_config8(dev, 0x09, 0x80); |
| |
| /* Set timings */ |
| pci_write_config16(dev, IDE_TIM_PRI, IDE_DECODE_ENABLE | |
| IDE_ISP_5_CLOCKS | IDE_RCT_4_CLOCKS); |
| pci_write_config16(dev, IDE_TIM_SEC, IDE_DECODE_ENABLE | |
| IDE_ISP_3_CLOCKS | IDE_RCT_1_CLOCKS | |
| IDE_PPE0 | IDE_IE0 | IDE_TIME0); |
| |
| /* Sync DMA */ |
| pci_write_config16(dev, IDE_SDMA_CNT, IDE_SSDE0); |
| pci_write_config16(dev, IDE_SDMA_TIM, 0x0200); |
| |
| common_sata_init(dev, port_map); |
| } else { |
| debug("SATA: Controller in plain-ide mode\n"); |
| |
| /* No AHCI: clear AHCI base */ |
| pci_write_bar32(hose, dev, 5, 0x00000000); |
| |
| /* And without AHCI BAR no memory decoding */ |
| reg16 = pci_read_config16(dev, PCI_COMMAND); |
| reg16 &= ~PCI_COMMAND_MEMORY; |
| pci_write_config16(dev, PCI_COMMAND, reg16); |
| |
| /* |
| * Native mode capable on both primary and secondary (0xa) |
| * OR'ed with enabled (0x50) = 0xf |
| */ |
| pci_write_config8(dev, 0x09, 0x8f); |
| |
| /* Set Interrupt Line */ |
| /* Interrupt Pin is set by D31IP.PIP */ |
| pci_write_config8(dev, INTR_LN, 0xff); |
| |
| /* Set timings */ |
| pci_write_config16(dev, IDE_TIM_PRI, IDE_DECODE_ENABLE | |
| IDE_ISP_3_CLOCKS | IDE_RCT_1_CLOCKS | |
| IDE_PPE0 | IDE_IE0 | IDE_TIME0); |
| pci_write_config16(dev, IDE_TIM_SEC, IDE_DECODE_ENABLE | |
| IDE_SITRE | IDE_ISP_3_CLOCKS | |
| IDE_RCT_1_CLOCKS | IDE_IE0 | IDE_TIME0); |
| |
| /* Sync DMA */ |
| pci_write_config16(dev, IDE_SDMA_CNT, IDE_SSDE0 | IDE_PSDE0); |
| pci_write_config16(dev, IDE_SDMA_TIM, 0x0201); |
| |
| common_sata_init(dev, port_map); |
| } |
| |
| /* Set Gen3 Transmitter settings if needed */ |
| port_tx = fdtdec_get_int(blob, node, "intel,sata-port0-gen3-tx", 0); |
| if (port_tx) |
| pch_iobp_update(SATA_IOBP_SP0G3IR, 0, port_tx); |
| |
| port_tx = fdtdec_get_int(blob, node, "intel,sata-port1-gen3-tx", 0); |
| if (port_tx) |
| pch_iobp_update(SATA_IOBP_SP1G3IR, 0, port_tx); |
| |
| /* Additional Programming Requirements */ |
| sir_write(dev, 0x04, 0x00001600); |
| sir_write(dev, 0x28, 0xa0000033); |
| reg32 = sir_read(dev, 0x54); |
| reg32 &= 0xff000000; |
| reg32 |= 0x5555aa; |
| sir_write(dev, 0x54, reg32); |
| sir_write(dev, 0x64, 0xcccc8484); |
| reg32 = sir_read(dev, 0x68); |
| reg32 &= 0xffff0000; |
| reg32 |= 0xcccc; |
| sir_write(dev, 0x68, reg32); |
| reg32 = sir_read(dev, 0x78); |
| reg32 &= 0x0000ffff; |
| reg32 |= 0x88880000; |
| sir_write(dev, 0x78, reg32); |
| sir_write(dev, 0x84, 0x001c7000); |
| sir_write(dev, 0x88, 0x88338822); |
| sir_write(dev, 0xa0, 0x001c7000); |
| sir_write(dev, 0xc4, 0x0c0c0c0c); |
| sir_write(dev, 0xc8, 0x0c0c0c0c); |
| sir_write(dev, 0xd4, 0x10000000); |
| |
| pch_iobp_update(0xea004001, 0x3fffffff, 0xc0000000); |
| pch_iobp_update(0xea00408a, 0xfffffcff, 0x00000100); |
| } |
| |
| void bd82x6x_sata_enable(pci_dev_t dev, const void *blob, int node) |
| { |
| unsigned port_map; |
| const char *mode; |
| u16 map = 0; |
| |
| /* |
| * Set SATA controller mode early so the resource allocator can |
| * properly assign IO/Memory resources for the controller. |
| */ |
| mode = fdt_getprop(blob, node, "intel,sata-mode", NULL); |
| if (mode && !strcmp(mode, "ahci")) |
| map = 0x0060; |
| port_map = fdtdec_get_int(blob, node, "intel,sata-port-map", 0); |
| |
| map |= (port_map ^ 0x3f) << 8; |
| pci_write_config16(dev, 0x90, map); |
| } |
