libata: Add pata_atp867x driver for Artop/Acard ATP867X controllers (d15d6e6c) · Commits · 戴 / test

drivers/ata/Kconfig

+9 −0

Original line number	Diff line number	Diff line
		@@ -255,6 +255,15 @@ config PATA_ARTOP

		If unsure, say N.

		config PATA_ATP867X
		tristate "ARTOP/Acard ATP867X PATA support"
		depends on PCI
		help
		This option enables support for ARTOP/Acard ATP867X PATA
		controllers.

		If unsure, say N.

		config PATA_AT32
		tristate "Atmel AVR32 PATA support (Experimental)"
		depends on AVR32 && PLATFORM_AT32AP && EXPERIMENTAL

drivers/ata/Makefile

+1 −0

Original line number	Diff line number	Diff line
		@@ -22,6 +22,7 @@ obj-$(CONFIG_SATA_FSL) += sata_fsl.o
		obj-$(CONFIG_PATA_ALI) += pata_ali.o
		obj-$(CONFIG_PATA_AMD) += pata_amd.o
		obj-$(CONFIG_PATA_ARTOP) += pata_artop.o
		obj-$(CONFIG_PATA_ATP867X) += pata_atp867x.o
		obj-$(CONFIG_PATA_AT32) += pata_at32.o
		obj-$(CONFIG_PATA_ATIIXP) += pata_atiixp.o
		obj-$(CONFIG_PATA_CMD640_PCI) += pata_cmd640.o

drivers/ata/pata_atp867x.c

0 → 100644

+548 −0

Original line number	Diff line number	Diff line
		/*
		* pata_atp867x.c - ARTOP 867X 64bit 4-channel UDMA133 ATA controller driver
		*
		* (C) 2009 Google Inc. John(Jung-Ik) Lee <jilee@google.com>
		*
		* Per Atp867 data sheet rev 1.2, Acard.
		* Based in part on early ide code from
		* 2003-2004 by Eric Uhrhane, 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; either version 2 of the License, or
		* (at your option) any later version.
		*
		* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
		*
		*
		* TODO:
		* 1. RAID features [comparison, XOR, striping, mirroring, etc.]
		*/

		#include <linux/kernel.h>
		#include <linux/module.h>
		#include <linux/pci.h>
		#include <linux/init.h>
		#include <linux/blkdev.h>
		#include <linux/delay.h>
		#include <linux/device.h>
		#include <scsi/scsi_host.h>
		#include <linux/libata.h>

		#define DRV_NAME "pata_atp867x"
		#define DRV_VERSION "0.7.5"

		/*
		* IO Registers
		* Note that all runtime hot priv ports are cached in ap private_data
		*/

		enum {
		ATP867X_IO_CHANNEL_OFFSET = 0x10,

		/*
		* IO Register Bitfields
		*/

		ATP867X_IO_PIOSPD_ACTIVE_SHIFT = 4,
		ATP867X_IO_PIOSPD_RECOVER_SHIFT = 0,

		ATP867X_IO_DMAMODE_MSTR_SHIFT = 0,
		ATP867X_IO_DMAMODE_MSTR_MASK = 0x07,
		ATP867X_IO_DMAMODE_SLAVE_SHIFT = 4,
		ATP867X_IO_DMAMODE_SLAVE_MASK = 0x70,

		ATP867X_IO_DMAMODE_UDMA_6 = 0x07,
		ATP867X_IO_DMAMODE_UDMA_5 = 0x06,
		ATP867X_IO_DMAMODE_UDMA_4 = 0x05,
		ATP867X_IO_DMAMODE_UDMA_3 = 0x04,
		ATP867X_IO_DMAMODE_UDMA_2 = 0x03,
		ATP867X_IO_DMAMODE_UDMA_1 = 0x02,
		ATP867X_IO_DMAMODE_UDMA_0 = 0x01,
		ATP867X_IO_DMAMODE_DISABLE = 0x00,

		ATP867X_IO_SYS_INFO_66MHZ = 0x04,
		ATP867X_IO_SYS_INFO_SLOW_UDMA5 = 0x02,
		ATP867X_IO_SYS_MASK_RESERVED = (~0xf1),

		ATP867X_IO_PORTSPD_VAL = 0x1143,
		ATP867X_PREREAD_VAL = 0x0200,

		ATP867X_NUM_PORTS = 4,
		ATP867X_BAR_IOBASE = 0,
		ATP867X_BAR_ROMBASE = 6,
		};

		#define ATP867X_IOBASE(ap) ((ap)->host->iomap[0])
		#define ATP867X_SYS_INFO(ap) (0x3F + ATP867X_IOBASE(ap))

		#define ATP867X_IO_PORTBASE(ap, port) (0x00 + ATP867X_IOBASE(ap) + \
		(port) * ATP867X_IO_CHANNEL_OFFSET)
		#define ATP867X_IO_DMABASE(ap, port) (0x40 + \
		ATP867X_IO_PORTBASE((ap), (port)))

		#define ATP867X_IO_STATUS(ap, port) (0x07 + \
		ATP867X_IO_PORTBASE((ap), (port)))
		#define ATP867X_IO_ALTSTATUS(ap, port) (0x0E + \
		ATP867X_IO_PORTBASE((ap), (port)))

		/*
		* hot priv ports
		*/
		#define ATP867X_IO_MSTRPIOSPD(ap, port) (0x08 + \
		ATP867X_IO_DMABASE((ap), (port)))
		#define ATP867X_IO_SLAVPIOSPD(ap, port) (0x09 + \
		ATP867X_IO_DMABASE((ap), (port)))
		#define ATP867X_IO_8BPIOSPD(ap, port) (0x0A + \
		ATP867X_IO_DMABASE((ap), (port)))
		#define ATP867X_IO_DMAMODE(ap, port) (0x0B + \
		ATP867X_IO_DMABASE((ap), (port)))

		#define ATP867X_IO_PORTSPD(ap, port) (0x4A + \
		ATP867X_IO_PORTBASE((ap), (port)))
		#define ATP867X_IO_PREREAD(ap, port) (0x4C + \
		ATP867X_IO_PORTBASE((ap), (port)))

		struct atp867x_priv {
		void __iomem *dma_mode;
		void __iomem *mstr_piospd;
		void __iomem *slave_piospd;
		void __iomem *eightb_piospd;
		int pci66mhz;
		};

		static inline u8 atp867x_speed_to_mode(u8 speed)
		{
		return speed - XFER_UDMA_0 + 1;
		}

		static void atp867x_set_dmamode(struct ata_port ap, struct ata_device adev)
		{
		struct pci_dev *pdev = to_pci_dev(ap->host->dev);
		struct atp867x_priv *dp = ap->private_data;
		u8 speed = adev->dma_mode;
		u8 b;
		u8 mode;

		mode = atp867x_speed_to_mode(speed);

		/*
		* Doc 6.6.9: decrease the udma mode value by 1 for safer UDMA speed
		* on 66MHz bus
		* rev-A: UDMA_1~4 (5, 6 no change)
		* rev-B: all UDMA modes
		* UDMA_0 stays not to disable UDMA
		*/
		if (dp->pci66mhz && mode > ATP867X_IO_DMAMODE_UDMA_0 &&
		(pdev->device == PCI_DEVICE_ID_ARTOP_ATP867B \|\|
		mode < ATP867X_IO_DMAMODE_UDMA_5))
		mode--;

		b = ioread8(dp->dma_mode);
		if (adev->devno & 1) {
		b = (b & ~ATP867X_IO_DMAMODE_SLAVE_MASK) \|
		(mode << ATP867X_IO_DMAMODE_SLAVE_SHIFT);
		} else {
		b = (b & ~ATP867X_IO_DMAMODE_MSTR_MASK) \|
		(mode << ATP867X_IO_DMAMODE_MSTR_SHIFT);
		}
		iowrite8(b, dp->dma_mode);
		}

		static int atp867x_get_active_clocks_shifted(unsigned int clk)
		{
		unsigned char clocks = clk;

		switch (clocks) {
		case 0:
		clocks = 1;
		break;
		case 1 ... 7:
		break;
		case 8 ... 12:
		clocks = 7;
		break;
		default:
		printk(KERN_WARNING "ATP867X: active %dclk is invalid. "
		"Using default 8clk.\n", clk);
		clocks = 0; /* 8 clk */
		break;
		}
		return clocks << ATP867X_IO_PIOSPD_ACTIVE_SHIFT;
		}

		static int atp867x_get_recover_clocks_shifted(unsigned int clk)
		{
		unsigned char clocks = clk;

		switch (clocks) {
		case 0:
		clocks = 1;
		break;
		case 1 ... 11:
		break;
		case 12:
		clocks = 0;
		break;
		case 13: case 14:
		--clocks;
		break;
		case 15:
		break;
		default:
		printk(KERN_WARNING "ATP867X: recover %dclk is invalid. "
		"Using default 15clk.\n", clk);
		clocks = 0; /* 12 clk */
		break;
		}
		return clocks << ATP867X_IO_PIOSPD_RECOVER_SHIFT;
		}

		static void atp867x_set_piomode(struct ata_port ap, struct ata_device adev)
		{
		struct ata_device *peer = ata_dev_pair(adev);
		struct atp867x_priv *dp = ap->private_data;
		u8 speed = adev->pio_mode;
		struct ata_timing t, p;
		int T, UT;
		u8 b;

		T = 1000000000 / 33333;
		UT = T / 4;

		ata_timing_compute(adev, speed, &t, T, UT);
		if (peer && peer->pio_mode) {
		ata_timing_compute(peer, peer->pio_mode, &p, T, UT);
		ata_timing_merge(&p, &t, &t, ATA_TIMING_8BIT);
		}

		b = ioread8(dp->dma_mode);
		if (adev->devno & 1)
		b = (b & ~ATP867X_IO_DMAMODE_SLAVE_MASK);
		else
		b = (b & ~ATP867X_IO_DMAMODE_MSTR_MASK);
		iowrite8(b, dp->dma_mode);

		b = atp867x_get_active_clocks_shifted(t.active) \|
		atp867x_get_recover_clocks_shifted(t.recover);
		if (dp->pci66mhz)
		b += 0x10;

		if (adev->devno & 1)
		iowrite8(b, dp->slave_piospd);
		else
		iowrite8(b, dp->mstr_piospd);

		/*
		* use the same value for comand timing as for PIO timimg
		*/
		iowrite8(b, dp->eightb_piospd);
		}

		static int atp867x_cable_detect(struct ata_port *ap)
		{
		return ATA_CBL_PATA40_SHORT;
		}

		static struct scsi_host_template atp867x_sht = {
		ATA_BMDMA_SHT(DRV_NAME),
		};

		static struct ata_port_operations atp867x_ops = {
		.inherits = &ata_bmdma_port_ops,
		.cable_detect = atp867x_cable_detect,
		.set_piomode = atp867x_set_piomode,
		.set_dmamode = atp867x_set_dmamode,
		};


		#ifdef ATP867X_DEBUG
		static void atp867x_check_res(struct pci_dev *pdev)
		{
		int i;
		unsigned long start, len;

		/* Check the PCI resources for this channel are enabled */
		for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) {
		start = pci_resource_start(pdev, i);
		len = pci_resource_len(pdev, i);
		printk(KERN_DEBUG "ATP867X: resource start:len=%lx:%lx\n",
		start, len);
		}
		}

		static void atp867x_check_ports(struct ata_port *ap, int port)
		{
		struct ata_ioports *ioaddr = &ap->ioaddr;
		struct atp867x_priv *dp = ap->private_data;

		printk(KERN_DEBUG "ATP867X: port[%d] addresses\n"
		" cmd_addr =0x%llx, 0x%llx\n"
		" ctl_addr =0x%llx, 0x%llx\n"
		" bmdma_addr =0x%llx, 0x%llx\n"
		" data_addr =0x%llx\n"
		" error_addr =0x%llx\n"
		" feature_addr =0x%llx\n"
		" nsect_addr =0x%llx\n"
		" lbal_addr =0x%llx\n"
		" lbam_addr =0x%llx\n"
		" lbah_addr =0x%llx\n"
		" device_addr =0x%llx\n"
		" status_addr =0x%llx\n"
		" command_addr =0x%llx\n"
		" dp->dma_mode =0x%llx\n"
		" dp->mstr_piospd =0x%llx\n"
		" dp->slave_piospd =0x%llx\n"
		" dp->eightb_piospd =0x%llx\n"
		" dp->pci66mhz =0x%lx\n",
		port,
		(unsigned long long)ioaddr->cmd_addr,
		(unsigned long long)ATP867X_IO_PORTBASE(ap, port),
		(unsigned long long)ioaddr->ctl_addr,
		(unsigned long long)ATP867X_IO_ALTSTATUS(ap, port),
		(unsigned long long)ioaddr->bmdma_addr,
		(unsigned long long)ATP867X_IO_DMABASE(ap, port),
		(unsigned long long)ioaddr->data_addr,
		(unsigned long long)ioaddr->error_addr,
		(unsigned long long)ioaddr->feature_addr,
		(unsigned long long)ioaddr->nsect_addr,
		(unsigned long long)ioaddr->lbal_addr,
		(unsigned long long)ioaddr->lbam_addr,
		(unsigned long long)ioaddr->lbah_addr,
		(unsigned long long)ioaddr->device_addr,
		(unsigned long long)ioaddr->status_addr,
		(unsigned long long)ioaddr->command_addr,
		(unsigned long long)dp->dma_mode,
		(unsigned long long)dp->mstr_piospd,
		(unsigned long long)dp->slave_piospd,
		(unsigned long long)dp->eightb_piospd,
		(unsigned long)dp->pci66mhz);
		}
		#endif

		static int atp867x_set_priv(struct ata_port *ap)
		{
		struct pci_dev *pdev = to_pci_dev(ap->host->dev);
		struct atp867x_priv *dp;
		int port = ap->port_no;

		dp = ap->private_data =
		devm_kzalloc(&pdev->dev, sizeof(*dp), GFP_KERNEL);
		if (dp == NULL)
		return -ENOMEM;

		dp->dma_mode = ATP867X_IO_DMAMODE(ap, port);
		dp->mstr_piospd = ATP867X_IO_MSTRPIOSPD(ap, port);
		dp->slave_piospd = ATP867X_IO_SLAVPIOSPD(ap, port);
		dp->eightb_piospd = ATP867X_IO_8BPIOSPD(ap, port);

		dp->pci66mhz =
		ioread8(ATP867X_SYS_INFO(ap)) & ATP867X_IO_SYS_INFO_66MHZ;

		return 0;
		}

		static void atp867x_fixup(struct ata_host *host)
		{
		struct pci_dev *pdev = to_pci_dev(host->dev);
		struct ata_port *ap = host->ports[0];
		int i;
		u8 v;

		/*
		* Broken BIOS might not set latency high enough
		*/
		pci_read_config_byte(pdev, PCI_LATENCY_TIMER, &v);
		if (v < 0x80) {
		v = 0x80;
		pci_write_config_byte(pdev, PCI_LATENCY_TIMER, v);
		printk(KERN_DEBUG "ATP867X: set latency timer of device %s"
		" to %d\n", pci_name(pdev), v);
		}

		/*
		* init 8bit io ports speed(0aaarrrr) to 43h and
		* init udma modes of master/slave to 0/0(11h)
		*/
		for (i = 0; i < ATP867X_NUM_PORTS; i++)
		iowrite16(ATP867X_IO_PORTSPD_VAL, ATP867X_IO_PORTSPD(ap, i));

		/*
		* init PreREAD counts
		*/
		for (i = 0; i < ATP867X_NUM_PORTS; i++)
		iowrite16(ATP867X_PREREAD_VAL, ATP867X_IO_PREREAD(ap, i));

		v = ioread8(ATP867X_IOBASE(ap) + 0x28);
		v &= 0xcf; /* Enable INTA#: bit4=0 means enable */
		v \|= 0xc0; /* Enable PCI burst, MRM & not immediate interrupts */
		iowrite8(v, ATP867X_IOBASE(ap) + 0x28);

		/*
		* Turn off the over clocked udma5 mode, only for Rev-B
		*/
		v = ioread8(ATP867X_SYS_INFO(ap));
		v &= ATP867X_IO_SYS_MASK_RESERVED;
		if (pdev->device == PCI_DEVICE_ID_ARTOP_ATP867B)
		v \|= ATP867X_IO_SYS_INFO_SLOW_UDMA5;
		iowrite8(v, ATP867X_SYS_INFO(ap));
		}

		static int atp867x_ata_pci_sff_init_host(struct ata_host *host)
		{
		struct device *gdev = host->dev;
		struct pci_dev *pdev = to_pci_dev(gdev);
		unsigned int mask = 0;
		int i, rc;

		/*
		* do not map rombase
		*/
		rc = pcim_iomap_regions(pdev, 1 << ATP867X_BAR_IOBASE, DRV_NAME);
		if (rc == -EBUSY)
		pcim_pin_device(pdev);
		if (rc)
		return rc;
		host->iomap = pcim_iomap_table(pdev);

		#ifdef ATP867X_DEBUG
		atp867x_check_res(pdev);

		for (i = 0; i < PCI_ROM_RESOURCE; i++)
		printk(KERN_DEBUG "ATP867X: iomap[%d]=0x%llx\n", i,
		(unsigned long long)(host->iomap[i]));
		#endif

		/*
		* request, iomap BARs and init port addresses accordingly
		*/
		for (i = 0; i < host->n_ports; i++) {
		struct ata_port *ap = host->ports[i];
		struct ata_ioports *ioaddr = &ap->ioaddr;

		ioaddr->cmd_addr = ATP867X_IO_PORTBASE(ap, i);
		ioaddr->ctl_addr = ioaddr->altstatus_addr
		= ATP867X_IO_ALTSTATUS(ap, i);
		ioaddr->bmdma_addr = ATP867X_IO_DMABASE(ap, i);

		ata_sff_std_ports(ioaddr);
		rc = atp867x_set_priv(ap);
		if (rc)
		return rc;

		#ifdef ATP867X_DEBUG
		atp867x_check_ports(ap, i);
		#endif
		ata_port_desc(ap, "cmd 0x%lx ctl 0x%lx",
		(unsigned long)ioaddr->cmd_addr,
		(unsigned long)ioaddr->ctl_addr);
		ata_port_desc(ap, "bmdma 0x%lx",
		(unsigned long)ioaddr->bmdma_addr);

		mask \|= 1 << i;
		}

		if (!mask) {
		dev_printk(KERN_ERR, gdev, "no available native port\n");
		return -ENODEV;
		}

		atp867x_fixup(host);

		rc = pci_set_dma_mask(pdev, ATA_DMA_MASK);
		if (rc)
		return rc;

		rc = pci_set_consistent_dma_mask(pdev, ATA_DMA_MASK);
		return rc;
		}

		static int atp867x_init_one(struct pci_dev *pdev,
		const struct pci_device_id *id)
		{
		static int printed_version;
		static const struct ata_port_info info_867x = {
		.flags = ATA_FLAG_SLAVE_POSS,
		.pio_mask = ATA_PIO4,
		.mwdma_mask = ATA_MWDMA2,
		.udma_mask = ATA_UDMA6,
		.port_ops = &atp867x_ops,
		};

		struct ata_host *host;
		const struct ata_port_info *ppi[] = { &info_867x, NULL };
		int rc;

		if (!printed_version++)
		dev_printk(KERN_INFO, &pdev->dev, "version " DRV_VERSION "\n");

		rc = pcim_enable_device(pdev);
		if (rc)
		return rc;

		printk(KERN_INFO "ATP867X: ATP867 ATA UDMA133 controller (rev %02X)",
		pdev->device);

		host = ata_host_alloc_pinfo(&pdev->dev, ppi, ATP867X_NUM_PORTS);
		if (!host) {
		dev_printk(KERN_ERR, &pdev->dev,
		"failed to allocate ATA host\n");
		rc = -ENOMEM;
		goto err_out;
		}

		rc = atp867x_ata_pci_sff_init_host(host);
		if (rc) {
		dev_printk(KERN_ERR, &pdev->dev, "failed to init host\n");
		goto err_out;
		}

		pci_set_master(pdev);

		rc = ata_host_activate(host, pdev->irq, ata_sff_interrupt,
		IRQF_SHARED, &atp867x_sht);
		if (rc)
		dev_printk(KERN_ERR, &pdev->dev, "failed to activate host\n");

		err_out:
		return rc;
		}

		static struct pci_device_id atp867x_pci_tbl[] = {
		{ PCI_VDEVICE(ARTOP, PCI_DEVICE_ID_ARTOP_ATP867A), 0 },
		{ PCI_VDEVICE(ARTOP, PCI_DEVICE_ID_ARTOP_ATP867B), 0 },
		{ },
		};

		static struct pci_driver atp867x_driver = {
		.name = DRV_NAME,
		.id_table = atp867x_pci_tbl,
		.probe = atp867x_init_one,
		.remove = ata_pci_remove_one,
		};

		static int __init atp867x_init(void)
		{
		return pci_register_driver(&atp867x_driver);
		}

		static void __exit atp867x_exit(void)
		{
		pci_unregister_driver(&atp867x_driver);
		}

		MODULE_AUTHOR("John(Jung-Ik) Lee, Google Inc.");
		MODULE_DESCRIPTION("low level driver for Artop/Acard 867x ATA controller");
		MODULE_LICENSE("GPL");
		MODULE_DEVICE_TABLE(pci, atp867x_pci_tbl);
		MODULE_VERSION(DRV_VERSION);

		module_init(atp867x_init);
		module_exit(atp867x_exit);

include/linux/pci_ids.h

+2 −0

Original line number	Diff line number	Diff line
		@@ -1529,6 +1529,8 @@
		#define PCI_DEVICE_ID_ARTOP_ATP860R 0x0007
		#define PCI_DEVICE_ID_ARTOP_ATP865 0x0008
		#define PCI_DEVICE_ID_ARTOP_ATP865R 0x0009
		#define PCI_DEVICE_ID_ARTOP_ATP867A 0x000A
		#define PCI_DEVICE_ID_ARTOP_ATP867B 0x000B
		#define PCI_DEVICE_ID_ARTOP_AEC7610 0x8002
		#define PCI_DEVICE_ID_ARTOP_AEC7612UW 0x8010
		#define PCI_DEVICE_ID_ARTOP_AEC7612U 0x8020

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