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u-boot/arch/x86/cpu/ivybridge/sata.c
Simon Glass 31f57c2873 x86: Add a x86_ prefix to the x86-specific PCI functions 
These functions currently use a generic name, but they are for x86 only.
This may introduce confusion and prevents U-Boot from using these names
more widely.

In fact it should be possible to remove these at some point and use
generic functions, but for now, rename them.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2015-04-16 19:27:41 -06:00

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/*
* 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)
{
x86_pci_write_config32(dev, SATA_SIRI, idx);
return x86_pci_read_config32(dev, SATA_SIRD);
}
static inline void sir_write(pci_dev_t dev, int idx, u32 value)
{
x86_pci_write_config32(dev, SATA_SIRI, idx);
x86_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;
x86_pci_write_config32(dev, IDE_CONFIG, reg32);
/* Port enable */
reg16 = x86_pci_read_config16(dev, 0x92);
reg16 &= ~0x3f;
reg16 |= port_map;
x86_pci_write_config16(dev, 0x92, reg16);
/* SATA Initialization register */
port_map &= 0xff;
x86_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 */
x86_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 */
x86_pci_write_config8(dev, INTR_LN, 0x0a);
/* Set timings */
x86_pci_write_config16(dev, IDE_TIM_PRI, IDE_DECODE_ENABLE |
IDE_ISP_3_CLOCKS | IDE_RCT_1_CLOCKS |
IDE_PPE0 | IDE_IE0 | IDE_TIME0);
x86_pci_write_config16(dev, IDE_TIM_SEC, IDE_DECODE_ENABLE |
IDE_ISP_5_CLOCKS | IDE_RCT_4_CLOCKS);
/* Sync DMA */
x86_pci_write_config16(dev, IDE_SDMA_CNT, IDE_PSDE0);
x86_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 = x86_pci_read_config16(dev, PCI_COMMAND);
reg16 &= ~PCI_COMMAND_MEMORY;
x86_pci_write_config16(dev, PCI_COMMAND, reg16);
x86_pci_write_config8(dev, 0x09, 0x80);
/* Set timings */
x86_pci_write_config16(dev, IDE_TIM_PRI, IDE_DECODE_ENABLE |
IDE_ISP_5_CLOCKS | IDE_RCT_4_CLOCKS);
x86_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 */
x86_pci_write_config16(dev, IDE_SDMA_CNT, IDE_SSDE0);
x86_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 = x86_pci_read_config16(dev, PCI_COMMAND);
reg16 &= ~PCI_COMMAND_MEMORY;
x86_pci_write_config16(dev, PCI_COMMAND, reg16);
/*
* Native mode capable on both primary and secondary (0xa)
* OR'ed with enabled (0x50) = 0xf
*/
x86_pci_write_config8(dev, 0x09, 0x8f);
/* Set Interrupt Line */
/* Interrupt Pin is set by D31IP.PIP */
x86_pci_write_config8(dev, INTR_LN, 0xff);
/* Set timings */
x86_pci_write_config16(dev, IDE_TIM_PRI, IDE_DECODE_ENABLE |
IDE_ISP_3_CLOCKS | IDE_RCT_1_CLOCKS |
IDE_PPE0 | IDE_IE0 | IDE_TIME0);
x86_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 */
x86_pci_write_config16(dev, IDE_SDMA_CNT,
IDE_SSDE0 | IDE_PSDE0);
x86_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;
x86_pci_write_config16(dev, 0x90, map);
}
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