arch/x86/cpu/ivybridge/sata.c - platform/external/u-boot - Gitiles

 /*
  * From Coreboot
  * Copyright (C) 2008-2009 coresystems GmbH
  *
  * SPDX-License-Identifier:	GPL-2.0
  */

 #include <common.h>
 #include <dm.h>
 #include <fdtdec.h>
 #include <asm/io.h>
 #include <asm/pci.h>
 #include <asm/arch/pch.h>
 #include <asm/arch/bd82x6x.h>

 DECLARE_GLOBAL_DATA_PTR;

 static inline u32 sir_read(struct udevice *dev, int idx)
 {
 	u32 data;

 	dm_pci_write_config32(dev, SATA_SIRI, idx);
 	dm_pci_read_config32(dev, SATA_SIRD, &data);

 	return data;
 }

 static inline void sir_write(struct udevice *dev, int idx, u32 value)
 {
 	dm_pci_write_config32(dev, SATA_SIRI, idx);
 	dm_pci_write_config32(dev, SATA_SIRD, value);
 }

 static void common_sata_init(struct udevice *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;
 	dm_pci_write_config32(dev, IDE_CONFIG, reg32);

 	/* Port enable */
 	dm_pci_read_config16(dev, 0x92, &reg16);
 	reg16 &= ~0x3f;
 	reg16 |= port_map;
 	dm_pci_write_config16(dev, 0x92, reg16);

 	/* SATA Initialization register */
 	port_map &= 0xff;
 	dm_pci_write_config32(dev, 0x94, ((port_map ^ 0x3f) << 24) | 0x183);
 }

 static void bd82x6x_sata_init(struct udevice *dev, struct udevice *pch)
 {
 	unsigned int port_map, speed_support, port_tx;
 	const void *blob = gd->fdt_blob;
 	int node = dev->of_offset;
 	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);

 	mode = fdt_getprop(blob, node, "intel,sata-mode", NULL);
 	if (!mode || !strcmp(mode, "ahci")) {
 		u32 abar;

 		debug("SATA: Controller in AHCI mode\n");

 		/* Set timings */
 		dm_pci_write_config16(dev, IDE_TIM_PRI, IDE_DECODE_ENABLE |
 				IDE_ISP_3_CLOCKS | IDE_RCT_1_CLOCKS |
 				IDE_PPE0 | IDE_IE0 | IDE_TIME0);
 		dm_pci_write_config16(dev, IDE_TIM_SEC, IDE_DECODE_ENABLE |
 				IDE_ISP_5_CLOCKS | IDE_RCT_4_CLOCKS);

 		/* Sync DMA */
 		dm_pci_write_config16(dev, IDE_SDMA_CNT, IDE_PSDE0);
 		dm_pci_write_config16(dev, IDE_SDMA_TIM, 0x0001);

 		common_sata_init(dev, 0x8000 | port_map);

 		/* Initialize AHCI memory-mapped space */
 		abar = dm_pci_read_bar32(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 */
 		dm_pci_write_bar32(dev, 5, 0x00000000);
 		/* And without AHCI BAR no memory decoding */
 		dm_pci_read_config16(dev, PCI_COMMAND, &reg16);
 		reg16 &= ~PCI_COMMAND_MEMORY;
 		dm_pci_write_config16(dev, PCI_COMMAND, reg16);

 		dm_pci_write_config8(dev, 0x09, 0x80);

 		/* Set timings */
 		dm_pci_write_config16(dev, IDE_TIM_PRI, IDE_DECODE_ENABLE |
 				IDE_ISP_5_CLOCKS | IDE_RCT_4_CLOCKS);
 		dm_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 */
 		dm_pci_write_config16(dev, IDE_SDMA_CNT, IDE_SSDE0);
 		dm_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 */
 		dm_pci_write_bar32(dev, 5, 0x00000000);

 		/* And without AHCI BAR no memory decoding */
 		dm_pci_read_config16(dev, PCI_COMMAND, &reg16);
 		reg16 &= ~PCI_COMMAND_MEMORY;
 		dm_pci_write_config16(dev, PCI_COMMAND, reg16);

 		/*
 		 * Native mode capable on both primary and secondary (0xa)
 		 * OR'ed with enabled (0x50) = 0xf
 		 */
 		dm_pci_write_config8(dev, 0x09, 0x8f);

 		/* Set timings */
 		dm_pci_write_config16(dev, IDE_TIM_PRI, IDE_DECODE_ENABLE |
 				IDE_ISP_3_CLOCKS | IDE_RCT_1_CLOCKS |
 				IDE_PPE0 | IDE_IE0 | IDE_TIME0);
 		dm_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 */
 		dm_pci_write_config16(dev, IDE_SDMA_CNT, IDE_SSDE0 | IDE_PSDE0);
 		dm_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(pch, 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(pch, 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(pch, 0xea004001, 0x3fffffff, 0xc0000000);
 	pch_iobp_update(pch, 0xea00408a, 0xfffffcff, 0x00000100);
 }

 static void bd82x6x_sata_enable(struct udevice *dev)
 {
 	const void *blob = gd->fdt_blob;
 	int node = dev->of_offset;
 	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;
 	dm_pci_write_config16(dev, 0x90, map);
 }

 static int bd82x6x_sata_probe(struct udevice *dev)
 {
 	struct udevice *pch;
 	int ret;

 	ret = uclass_first_device(UCLASS_PCH, &pch);
 	if (ret)
 		return ret;
 	if (!pch)
 		return -ENODEV;

 	if (!(gd->flags & GD_FLG_RELOC))
 		bd82x6x_sata_enable(dev);
 	else
 		bd82x6x_sata_init(dev, pch);

 	return 0;
 }

 static const struct udevice_id bd82x6x_ahci_ids[] = {
 	{ .compatible = "intel,pantherpoint-ahci" },
 	{ }
 };

 U_BOOT_DRIVER(ahci_ivybridge_drv) = {
 	.name		= "ahci_ivybridge",
 	.id		= UCLASS_DISK,
 	.of_match	= bd82x6x_ahci_ids,
 	.probe		= bd82x6x_sata_probe,
 };
	/*
	* From Coreboot
	* Copyright (C) 2008-2009 coresystems GmbH
	*
	* SPDX-License-Identifier: GPL-2.0
	*/

	#include <common.h>
	#include <dm.h>
	#include <fdtdec.h>
	#include <asm/io.h>
	#include <asm/pci.h>
	#include <asm/arch/pch.h>
	#include <asm/arch/bd82x6x.h>

	DECLARE_GLOBAL_DATA_PTR;

	static inline u32 sir_read(struct udevice *dev, int idx)
	{
	u32 data;

	dm_pci_write_config32(dev, SATA_SIRI, idx);
	dm_pci_read_config32(dev, SATA_SIRD, &data);

	return data;
	}

	static inline void sir_write(struct udevice *dev, int idx, u32 value)
	{
	dm_pci_write_config32(dev, SATA_SIRI, idx);
	dm_pci_write_config32(dev, SATA_SIRD, value);
	}

	static void common_sata_init(struct udevice *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;
	dm_pci_write_config32(dev, IDE_CONFIG, reg32);

	/* Port enable */
	dm_pci_read_config16(dev, 0x92, &reg16);
	reg16 &= ~0x3f;
	reg16 \|= port_map;
	dm_pci_write_config16(dev, 0x92, reg16);

	/* SATA Initialization register */
	port_map &= 0xff;
	dm_pci_write_config32(dev, 0x94, ((port_map ^ 0x3f) << 24) \| 0x183);
	}

	static void bd82x6x_sata_init(struct udevice dev, struct udevice pch)
	{
	unsigned int port_map, speed_support, port_tx;
	const void *blob = gd->fdt_blob;
	int node = dev->of_offset;
	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);

	mode = fdt_getprop(blob, node, "intel,sata-mode", NULL);
	if (!mode \|\| !strcmp(mode, "ahci")) {
	u32 abar;

	debug("SATA: Controller in AHCI mode\n");

	/* Set timings */
	dm_pci_write_config16(dev, IDE_TIM_PRI, IDE_DECODE_ENABLE \|
	IDE_ISP_3_CLOCKS \| IDE_RCT_1_CLOCKS \|
	IDE_PPE0 \| IDE_IE0 \| IDE_TIME0);
	dm_pci_write_config16(dev, IDE_TIM_SEC, IDE_DECODE_ENABLE \|
	IDE_ISP_5_CLOCKS \| IDE_RCT_4_CLOCKS);

	/* Sync DMA */
	dm_pci_write_config16(dev, IDE_SDMA_CNT, IDE_PSDE0);
	dm_pci_write_config16(dev, IDE_SDMA_TIM, 0x0001);

	common_sata_init(dev, 0x8000 \| port_map);

	/* Initialize AHCI memory-mapped space */
	abar = dm_pci_read_bar32(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 */
	dm_pci_write_bar32(dev, 5, 0x00000000);
	/* And without AHCI BAR no memory decoding */
	dm_pci_read_config16(dev, PCI_COMMAND, &reg16);
	reg16 &= ~PCI_COMMAND_MEMORY;
	dm_pci_write_config16(dev, PCI_COMMAND, reg16);

	dm_pci_write_config8(dev, 0x09, 0x80);

	/* Set timings */
	dm_pci_write_config16(dev, IDE_TIM_PRI, IDE_DECODE_ENABLE \|
	IDE_ISP_5_CLOCKS \| IDE_RCT_4_CLOCKS);
	dm_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 */
	dm_pci_write_config16(dev, IDE_SDMA_CNT, IDE_SSDE0);
	dm_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 */
	dm_pci_write_bar32(dev, 5, 0x00000000);

	/* And without AHCI BAR no memory decoding */
	dm_pci_read_config16(dev, PCI_COMMAND, &reg16);
	reg16 &= ~PCI_COMMAND_MEMORY;
	dm_pci_write_config16(dev, PCI_COMMAND, reg16);

	/*
	* Native mode capable on both primary and secondary (0xa)
	* OR'ed with enabled (0x50) = 0xf
	*/
	dm_pci_write_config8(dev, 0x09, 0x8f);

	/* Set timings */
	dm_pci_write_config16(dev, IDE_TIM_PRI, IDE_DECODE_ENABLE \|
	IDE_ISP_3_CLOCKS \| IDE_RCT_1_CLOCKS \|
	IDE_PPE0 \| IDE_IE0 \| IDE_TIME0);
	dm_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 */
	dm_pci_write_config16(dev, IDE_SDMA_CNT, IDE_SSDE0 \| IDE_PSDE0);
	dm_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(pch, 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(pch, 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(pch, 0xea004001, 0x3fffffff, 0xc0000000);
	pch_iobp_update(pch, 0xea00408a, 0xfffffcff, 0x00000100);
	}

	static void bd82x6x_sata_enable(struct udevice *dev)
	{
	const void *blob = gd->fdt_blob;
	int node = dev->of_offset;
	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;
	dm_pci_write_config16(dev, 0x90, map);
	}

	static int bd82x6x_sata_probe(struct udevice *dev)
	{
	struct udevice *pch;
	int ret;

	ret = uclass_first_device(UCLASS_PCH, &pch);
	if (ret)
	return ret;
	if (!pch)
	return -ENODEV;

	if (!(gd->flags & GD_FLG_RELOC))
	bd82x6x_sata_enable(dev);
	else
	bd82x6x_sata_init(dev, pch);

	return 0;
	}

	static const struct udevice_id bd82x6x_ahci_ids[] = {
	{ .compatible = "intel,pantherpoint-ahci" },
	{ }
	};

	U_BOOT_DRIVER(ahci_ivybridge_drv) = {
	.name = "ahci_ivybridge",
	.id = UCLASS_DISK,
	.of_match = bd82x6x_ahci_ids,
	.probe = bd82x6x_sata_probe,
	};