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Brett Russ20f733e2005-09-01 18:26:17 -04001/*
2 * sata_mv.c - Marvell SATA support
3 *
Mark Lord40f21b12009-03-10 18:51:04 -04004 * Copyright 2008-2009: Marvell Corporation, all rights reserved.
Jeff Garzik8b260242005-11-12 12:32:50 -05005 * Copyright 2005: EMC Corporation, all rights reserved.
Jeff Garzike2b1be52005-11-18 14:04:23 -05006 * Copyright 2005 Red Hat, Inc. All rights reserved.
Brett Russ20f733e2005-09-01 18:26:17 -04007 *
Mark Lord40f21b12009-03-10 18:51:04 -04008 * Originally written by Brett Russ.
9 * Extensive overhaul and enhancement by Mark Lord <mlord@pobox.com>.
10 *
Brett Russ20f733e2005-09-01 18:26:17 -040011 * Please ALWAYS copy linux-ide@vger.kernel.org on emails.
12 *
13 * This program is free software; you can redistribute it and/or modify
14 * it under the terms of the GNU General Public License as published by
15 * the Free Software Foundation; version 2 of the License.
16 *
17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
21 *
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, write to the Free Software
24 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
25 *
26 */
27
Jeff Garzik4a05e202007-05-24 23:40:15 -040028/*
Mark Lord85afb932008-04-19 14:54:41 -040029 * sata_mv TODO list:
30 *
Mark Lord85afb932008-04-19 14:54:41 -040031 * --> Develop a low-power-consumption strategy, and implement it.
32 *
Mark Lord2b748a02009-03-10 22:01:17 -040033 * --> Add sysfs attributes for per-chip / per-HC IRQ coalescing thresholds.
Mark Lord85afb932008-04-19 14:54:41 -040034 *
35 * --> [Experiment, Marvell value added] Is it possible to use target
36 * mode to cross-connect two Linux boxes with Marvell cards? If so,
37 * creating LibATA target mode support would be very interesting.
38 *
39 * Target mode, for those without docs, is the ability to directly
40 * connect two SATA ports.
41 */
Jeff Garzik4a05e202007-05-24 23:40:15 -040042
Mark Lord65ad7fef2009-04-06 15:24:14 -040043/*
44 * 80x1-B2 errata PCI#11:
45 *
46 * Users of the 6041/6081 Rev.B2 chips (current is C0)
47 * should be careful to insert those cards only onto PCI-X bus #0,
48 * and only in device slots 0..7, not higher. The chips may not
49 * work correctly otherwise (note: this is a pretty rare condition).
50 */
51
Brett Russ20f733e2005-09-01 18:26:17 -040052#include <linux/kernel.h>
53#include <linux/module.h>
54#include <linux/pci.h>
55#include <linux/init.h>
56#include <linux/blkdev.h>
57#include <linux/delay.h>
58#include <linux/interrupt.h>
Andrew Morton8d8b6002008-02-04 23:43:44 -080059#include <linux/dmapool.h>
Brett Russ20f733e2005-09-01 18:26:17 -040060#include <linux/dma-mapping.h>
Jeff Garzika9524a72005-10-30 14:39:11 -050061#include <linux/device.h>
Saeed Bisharac77a2f42009-12-06 18:26:18 +020062#include <linux/clk.h>
Andrew Lunnb7db4f22013-12-26 18:25:41 +010063#include <linux/phy/phy.h>
Saeed Bisharaf351b2d2008-02-01 18:08:03 -050064#include <linux/platform_device.h>
65#include <linux/ata_platform.h>
Lennert Buytenhek15a32632008-03-27 14:51:39 -040066#include <linux/mbus.h>
Mark Lordc46938c2008-05-02 14:02:28 -040067#include <linux/bitops.h>
Tejun Heo5a0e3ad2010-03-24 17:04:11 +090068#include <linux/gfp.h>
Andrew Lunn97b414e2012-06-10 16:45:37 +020069#include <linux/of.h>
70#include <linux/of_irq.h>
Brett Russ20f733e2005-09-01 18:26:17 -040071#include <scsi/scsi_host.h>
Jeff Garzik193515d2005-11-07 00:59:37 -050072#include <scsi/scsi_cmnd.h>
Jeff Garzik6c087722007-10-12 00:16:23 -040073#include <scsi/scsi_device.h>
Brett Russ20f733e2005-09-01 18:26:17 -040074#include <linux/libata.h>
Brett Russ20f733e2005-09-01 18:26:17 -040075
76#define DRV_NAME "sata_mv"
Mark Lordcae5a292009-04-06 16:43:45 -040077#define DRV_VERSION "1.28"
Brett Russ20f733e2005-09-01 18:26:17 -040078
Mark Lord40f21b12009-03-10 18:51:04 -040079/*
80 * module options
81 */
82
Mark Lord40f21b12009-03-10 18:51:04 -040083#ifdef CONFIG_PCI
Andrew Lunn13b74082012-09-28 17:04:10 +020084static int msi;
Mark Lord40f21b12009-03-10 18:51:04 -040085module_param(msi, int, S_IRUGO);
86MODULE_PARM_DESC(msi, "Enable use of PCI MSI (0=off, 1=on)");
87#endif
88
Mark Lord2b748a02009-03-10 22:01:17 -040089static int irq_coalescing_io_count;
90module_param(irq_coalescing_io_count, int, S_IRUGO);
91MODULE_PARM_DESC(irq_coalescing_io_count,
92 "IRQ coalescing I/O count threshold (0..255)");
93
94static int irq_coalescing_usecs;
95module_param(irq_coalescing_usecs, int, S_IRUGO);
96MODULE_PARM_DESC(irq_coalescing_usecs,
97 "IRQ coalescing time threshold in usecs");
98
Brett Russ20f733e2005-09-01 18:26:17 -040099enum {
100 /* BAR's are enumerated in terms of pci_resource_start() terms */
101 MV_PRIMARY_BAR = 0, /* offset 0x10: memory space */
102 MV_IO_BAR = 2, /* offset 0x18: IO space */
103 MV_MISC_BAR = 3, /* offset 0x1c: FLASH, NVRAM, SRAM */
104
105 MV_MAJOR_REG_AREA_SZ = 0x10000, /* 64KB */
106 MV_MINOR_REG_AREA_SZ = 0x2000, /* 8KB */
107
Mark Lord2b748a02009-03-10 22:01:17 -0400108 /* For use with both IRQ coalescing methods ("all ports" or "per-HC" */
109 COAL_CLOCKS_PER_USEC = 150, /* for calculating COAL_TIMEs */
110 MAX_COAL_TIME_THRESHOLD = ((1 << 24) - 1), /* internal clocks count */
111 MAX_COAL_IO_COUNT = 255, /* completed I/O count */
112
Brett Russ20f733e2005-09-01 18:26:17 -0400113 MV_PCI_REG_BASE = 0,
Mark Lord615ab952006-05-19 16:24:56 -0400114
Mark Lord2b748a02009-03-10 22:01:17 -0400115 /*
116 * Per-chip ("all ports") interrupt coalescing feature.
117 * This is only for GEN_II / GEN_IIE hardware.
118 *
119 * Coalescing defers the interrupt until either the IO_THRESHOLD
120 * (count of completed I/Os) is met, or the TIME_THRESHOLD is met.
121 */
Mark Lordcae5a292009-04-06 16:43:45 -0400122 COAL_REG_BASE = 0x18000,
123 IRQ_COAL_CAUSE = (COAL_REG_BASE + 0x08),
Mark Lord2b748a02009-03-10 22:01:17 -0400124 ALL_PORTS_COAL_IRQ = (1 << 4), /* all ports irq event */
125
Mark Lordcae5a292009-04-06 16:43:45 -0400126 IRQ_COAL_IO_THRESHOLD = (COAL_REG_BASE + 0xcc),
127 IRQ_COAL_TIME_THRESHOLD = (COAL_REG_BASE + 0xd0),
Mark Lord2b748a02009-03-10 22:01:17 -0400128
129 /*
130 * Registers for the (unused here) transaction coalescing feature:
131 */
Mark Lordcae5a292009-04-06 16:43:45 -0400132 TRAN_COAL_CAUSE_LO = (COAL_REG_BASE + 0x88),
133 TRAN_COAL_CAUSE_HI = (COAL_REG_BASE + 0x8c),
Mark Lord2b748a02009-03-10 22:01:17 -0400134
Mark Lordcae5a292009-04-06 16:43:45 -0400135 SATAHC0_REG_BASE = 0x20000,
136 FLASH_CTL = 0x1046c,
137 GPIO_PORT_CTL = 0x104f0,
138 RESET_CFG = 0x180d8,
Brett Russ20f733e2005-09-01 18:26:17 -0400139
140 MV_PCI_REG_SZ = MV_MAJOR_REG_AREA_SZ,
141 MV_SATAHC_REG_SZ = MV_MAJOR_REG_AREA_SZ,
142 MV_SATAHC_ARBTR_REG_SZ = MV_MINOR_REG_AREA_SZ, /* arbiter */
143 MV_PORT_REG_SZ = MV_MINOR_REG_AREA_SZ,
144
Brett Russ31961942005-09-30 01:36:00 -0400145 MV_MAX_Q_DEPTH = 32,
146 MV_MAX_Q_DEPTH_MASK = MV_MAX_Q_DEPTH - 1,
147
148 /* CRQB needs alignment on a 1KB boundary. Size == 1KB
149 * CRPB needs alignment on a 256B boundary. Size == 256B
Brett Russ31961942005-09-30 01:36:00 -0400150 * ePRD (SG) entries need alignment on a 16B boundary. Size == 16B
151 */
152 MV_CRQB_Q_SZ = (32 * MV_MAX_Q_DEPTH),
153 MV_CRPB_Q_SZ = (8 * MV_MAX_Q_DEPTH),
Mark Lordda2fa9b2008-01-26 18:32:45 -0500154 MV_MAX_SG_CT = 256,
Brett Russ31961942005-09-30 01:36:00 -0400155 MV_SG_TBL_SZ = (16 * MV_MAX_SG_CT),
Brett Russ31961942005-09-30 01:36:00 -0400156
Mark Lord352fab72008-04-19 14:43:42 -0400157 /* Determine hc from 0-7 port: hc = port >> MV_PORT_HC_SHIFT */
Brett Russ20f733e2005-09-01 18:26:17 -0400158 MV_PORT_HC_SHIFT = 2,
Mark Lord352fab72008-04-19 14:43:42 -0400159 MV_PORTS_PER_HC = (1 << MV_PORT_HC_SHIFT), /* 4 */
160 /* Determine hc port from 0-7 port: hardport = port & MV_PORT_MASK */
161 MV_PORT_MASK = (MV_PORTS_PER_HC - 1), /* 3 */
Brett Russ20f733e2005-09-01 18:26:17 -0400162
163 /* Host Flags */
164 MV_FLAG_DUAL_HC = (1 << 30), /* two SATA Host Controllers */
Saeed Bishara7bb3c522008-01-30 11:50:45 -1100165
Sergei Shtylyov9cbe0562011-02-04 22:05:48 +0300166 MV_COMMON_FLAGS = ATA_FLAG_SATA | ATA_FLAG_PIO_POLLING,
Mark Lordad3aef52008-05-14 09:21:43 -0400167
Mark Lord91b1a842009-01-30 18:46:39 -0500168 MV_GEN_I_FLAGS = MV_COMMON_FLAGS | ATA_FLAG_NO_ATAPI,
Brett Russ20f733e2005-09-01 18:26:17 -0400169
Mark Lord40f21b12009-03-10 18:51:04 -0400170 MV_GEN_II_FLAGS = MV_COMMON_FLAGS | ATA_FLAG_NCQ |
171 ATA_FLAG_PMP | ATA_FLAG_ACPI_SATA,
Mark Lord91b1a842009-01-30 18:46:39 -0500172
173 MV_GEN_IIE_FLAGS = MV_GEN_II_FLAGS | ATA_FLAG_AN,
Mark Lordad3aef52008-05-14 09:21:43 -0400174
Brett Russ31961942005-09-30 01:36:00 -0400175 CRQB_FLAG_READ = (1 << 0),
176 CRQB_TAG_SHIFT = 1,
Jeff Garzikc5d3e452007-07-11 18:30:50 -0400177 CRQB_IOID_SHIFT = 6, /* CRQB Gen-II/IIE IO Id shift */
Mark Lorde12bef52008-03-31 19:33:56 -0400178 CRQB_PMP_SHIFT = 12, /* CRQB Gen-II/IIE PMP shift */
Jeff Garzikc5d3e452007-07-11 18:30:50 -0400179 CRQB_HOSTQ_SHIFT = 17, /* CRQB Gen-II/IIE HostQueTag shift */
Brett Russ31961942005-09-30 01:36:00 -0400180 CRQB_CMD_ADDR_SHIFT = 8,
181 CRQB_CMD_CS = (0x2 << 11),
182 CRQB_CMD_LAST = (1 << 15),
183
184 CRPB_FLAG_STATUS_SHIFT = 8,
Jeff Garzikc5d3e452007-07-11 18:30:50 -0400185 CRPB_IOID_SHIFT_6 = 5, /* CRPB Gen-II IO Id shift */
186 CRPB_IOID_SHIFT_7 = 7, /* CRPB Gen-IIE IO Id shift */
Brett Russ31961942005-09-30 01:36:00 -0400187
188 EPRD_FLAG_END_OF_TBL = (1 << 31),
189
Brett Russ20f733e2005-09-01 18:26:17 -0400190 /* PCI interface registers */
191
Mark Lordcae5a292009-04-06 16:43:45 -0400192 MV_PCI_COMMAND = 0xc00,
193 MV_PCI_COMMAND_MWRCOM = (1 << 4), /* PCI Master Write Combining */
194 MV_PCI_COMMAND_MRDTRIG = (1 << 7), /* PCI Master Read Trigger */
Brett Russ31961942005-09-30 01:36:00 -0400195
Mark Lordcae5a292009-04-06 16:43:45 -0400196 PCI_MAIN_CMD_STS = 0xd30,
Brett Russ20f733e2005-09-01 18:26:17 -0400197 STOP_PCI_MASTER = (1 << 2),
198 PCI_MASTER_EMPTY = (1 << 3),
199 GLOB_SFT_RST = (1 << 4),
200
Mark Lordcae5a292009-04-06 16:43:45 -0400201 MV_PCI_MODE = 0xd00,
Mark Lord8e7decd2008-05-02 02:07:51 -0400202 MV_PCI_MODE_MASK = 0x30,
203
Jeff Garzik522479f2005-11-12 22:14:02 -0500204 MV_PCI_EXP_ROM_BAR_CTL = 0xd2c,
205 MV_PCI_DISC_TIMER = 0xd04,
206 MV_PCI_MSI_TRIGGER = 0xc38,
207 MV_PCI_SERR_MASK = 0xc28,
Mark Lordcae5a292009-04-06 16:43:45 -0400208 MV_PCI_XBAR_TMOUT = 0x1d04,
Jeff Garzik522479f2005-11-12 22:14:02 -0500209 MV_PCI_ERR_LOW_ADDRESS = 0x1d40,
210 MV_PCI_ERR_HIGH_ADDRESS = 0x1d44,
211 MV_PCI_ERR_ATTRIBUTE = 0x1d48,
212 MV_PCI_ERR_COMMAND = 0x1d50,
213
Mark Lordcae5a292009-04-06 16:43:45 -0400214 PCI_IRQ_CAUSE = 0x1d58,
215 PCI_IRQ_MASK = 0x1d5c,
Brett Russ20f733e2005-09-01 18:26:17 -0400216 PCI_UNMASK_ALL_IRQS = 0x7fffff, /* bits 22-0 */
217
Mark Lordcae5a292009-04-06 16:43:45 -0400218 PCIE_IRQ_CAUSE = 0x1900,
219 PCIE_IRQ_MASK = 0x1910,
Mark Lord646a4da2008-01-26 18:30:37 -0500220 PCIE_UNMASK_ALL_IRQS = 0x40a, /* assorted bits */
Mark Lord02a121d2007-12-01 13:07:22 -0500221
Mark Lord7368f912008-04-25 11:24:24 -0400222 /* Host Controller Main Interrupt Cause/Mask registers (1 per-chip) */
Mark Lordcae5a292009-04-06 16:43:45 -0400223 PCI_HC_MAIN_IRQ_CAUSE = 0x1d60,
224 PCI_HC_MAIN_IRQ_MASK = 0x1d64,
225 SOC_HC_MAIN_IRQ_CAUSE = 0x20020,
226 SOC_HC_MAIN_IRQ_MASK = 0x20024,
Mark Lord40f21b12009-03-10 18:51:04 -0400227 ERR_IRQ = (1 << 0), /* shift by (2 * port #) */
228 DONE_IRQ = (1 << 1), /* shift by (2 * port #) */
Brett Russ20f733e2005-09-01 18:26:17 -0400229 HC0_IRQ_PEND = 0x1ff, /* bits 0-8 = HC0's ports */
230 HC_SHIFT = 9, /* bits 9-17 = HC1's ports */
Mark Lord2b748a02009-03-10 22:01:17 -0400231 DONE_IRQ_0_3 = 0x000000aa, /* DONE_IRQ ports 0,1,2,3 */
232 DONE_IRQ_4_7 = (DONE_IRQ_0_3 << HC_SHIFT), /* 4,5,6,7 */
Brett Russ20f733e2005-09-01 18:26:17 -0400233 PCI_ERR = (1 << 18),
Mark Lord40f21b12009-03-10 18:51:04 -0400234 TRAN_COAL_LO_DONE = (1 << 19), /* transaction coalescing */
235 TRAN_COAL_HI_DONE = (1 << 20), /* transaction coalescing */
236 PORTS_0_3_COAL_DONE = (1 << 8), /* HC0 IRQ coalescing */
237 PORTS_4_7_COAL_DONE = (1 << 17), /* HC1 IRQ coalescing */
238 ALL_PORTS_COAL_DONE = (1 << 21), /* GEN_II(E) IRQ coalescing */
Brett Russ20f733e2005-09-01 18:26:17 -0400239 GPIO_INT = (1 << 22),
240 SELF_INT = (1 << 23),
241 TWSI_INT = (1 << 24),
242 HC_MAIN_RSVD = (0x7f << 25), /* bits 31-25 */
Jeff Garzikfb621e22007-02-25 04:19:45 -0500243 HC_MAIN_RSVD_5 = (0x1fff << 19), /* bits 31-19 */
Mark Lorde12bef52008-03-31 19:33:56 -0400244 HC_MAIN_RSVD_SOC = (0x3fffffb << 6), /* bits 31-9, 7-6 */
Brett Russ20f733e2005-09-01 18:26:17 -0400245
246 /* SATAHC registers */
Mark Lordcae5a292009-04-06 16:43:45 -0400247 HC_CFG = 0x00,
Brett Russ20f733e2005-09-01 18:26:17 -0400248
Mark Lordcae5a292009-04-06 16:43:45 -0400249 HC_IRQ_CAUSE = 0x14,
Mark Lord352fab72008-04-19 14:43:42 -0400250 DMA_IRQ = (1 << 0), /* shift by port # */
251 HC_COAL_IRQ = (1 << 4), /* IRQ coalescing */
Brett Russ20f733e2005-09-01 18:26:17 -0400252 DEV_IRQ = (1 << 8), /* shift by port # */
253
Mark Lord2b748a02009-03-10 22:01:17 -0400254 /*
255 * Per-HC (Host-Controller) interrupt coalescing feature.
256 * This is present on all chip generations.
257 *
258 * Coalescing defers the interrupt until either the IO_THRESHOLD
259 * (count of completed I/Os) is met, or the TIME_THRESHOLD is met.
260 */
Mark Lordcae5a292009-04-06 16:43:45 -0400261 HC_IRQ_COAL_IO_THRESHOLD = 0x000c,
262 HC_IRQ_COAL_TIME_THRESHOLD = 0x0010,
Mark Lord2b748a02009-03-10 22:01:17 -0400263
Mark Lordcae5a292009-04-06 16:43:45 -0400264 SOC_LED_CTRL = 0x2c,
Mark Lord000b3442009-03-15 11:33:19 -0400265 SOC_LED_CTRL_BLINK = (1 << 0), /* Active LED blink */
266 SOC_LED_CTRL_ACT_PRESENCE = (1 << 2), /* Multiplex dev presence */
267 /* with dev activity LED */
268
Brett Russ20f733e2005-09-01 18:26:17 -0400269 /* Shadow block registers */
Mark Lordcae5a292009-04-06 16:43:45 -0400270 SHD_BLK = 0x100,
271 SHD_CTL_AST = 0x20, /* ofs from SHD_BLK */
Brett Russ20f733e2005-09-01 18:26:17 -0400272
273 /* SATA registers */
Mark Lordcae5a292009-04-06 16:43:45 -0400274 SATA_STATUS = 0x300, /* ctrl, err regs follow status */
275 SATA_ACTIVE = 0x350,
276 FIS_IRQ_CAUSE = 0x364,
277 FIS_IRQ_CAUSE_AN = (1 << 9), /* async notification */
Mark Lord17c5aab2008-04-16 14:56:51 -0400278
Mark Lordcae5a292009-04-06 16:43:45 -0400279 LTMODE = 0x30c, /* requires read-after-write */
Mark Lord17c5aab2008-04-16 14:56:51 -0400280 LTMODE_BIT8 = (1 << 8), /* unknown, but necessary */
281
Mark Lordcae5a292009-04-06 16:43:45 -0400282 PHY_MODE2 = 0x330,
Jeff Garzik47c2b672005-11-12 21:13:17 -0500283 PHY_MODE3 = 0x310,
Mark Lordcae5a292009-04-06 16:43:45 -0400284
285 PHY_MODE4 = 0x314, /* requires read-after-write */
Mark Lordba069e32008-05-31 16:46:34 -0400286 PHY_MODE4_CFG_MASK = 0x00000003, /* phy internal config field */
287 PHY_MODE4_CFG_VALUE = 0x00000001, /* phy internal config field */
288 PHY_MODE4_RSVD_ZEROS = 0x5de3fffa, /* Gen2e always write zeros */
289 PHY_MODE4_RSVD_ONES = 0x00000005, /* Gen2e always write ones */
290
Mark Lordcae5a292009-04-06 16:43:45 -0400291 SATA_IFCTL = 0x344,
292 SATA_TESTCTL = 0x348,
293 SATA_IFSTAT = 0x34c,
294 VENDOR_UNIQUE_FIS = 0x35c,
Mark Lord17c5aab2008-04-16 14:56:51 -0400295
Mark Lordcae5a292009-04-06 16:43:45 -0400296 FISCFG = 0x360,
Mark Lord8e7decd2008-05-02 02:07:51 -0400297 FISCFG_WAIT_DEV_ERR = (1 << 8), /* wait for host on DevErr */
298 FISCFG_SINGLE_SYNC = (1 << 16), /* SYNC on DMA activation */
Mark Lord17c5aab2008-04-16 14:56:51 -0400299
Martin Michlmayr29b7e432009-05-04 20:58:50 +0200300 PHY_MODE9_GEN2 = 0x398,
301 PHY_MODE9_GEN1 = 0x39c,
302 PHYCFG_OFS = 0x3a0, /* only in 65n devices */
303
Jeff Garzikc9d39132005-11-13 17:47:51 -0500304 MV5_PHY_MODE = 0x74,
Mark Lordcae5a292009-04-06 16:43:45 -0400305 MV5_LTMODE = 0x30,
306 MV5_PHY_CTL = 0x0C,
307 SATA_IFCFG = 0x050,
Lior Amsalem9013d642014-01-14 20:09:57 +0100308 LP_PHY_CTL = 0x058,
Jeff Garzikbca1c4e2005-11-12 12:48:15 -0500309
310 MV_M2_PREAMP_MASK = 0x7e0,
Brett Russ20f733e2005-09-01 18:26:17 -0400311
312 /* Port registers */
Mark Lordcae5a292009-04-06 16:43:45 -0400313 EDMA_CFG = 0,
Mark Lord0c589122008-01-26 18:31:16 -0500314 EDMA_CFG_Q_DEPTH = 0x1f, /* max device queue depth */
315 EDMA_CFG_NCQ = (1 << 5), /* for R/W FPDMA queued */
316 EDMA_CFG_NCQ_GO_ON_ERR = (1 << 14), /* continue on error */
317 EDMA_CFG_RD_BRST_EXT = (1 << 11), /* read burst 512B */
318 EDMA_CFG_WR_BUFF_LEN = (1 << 13), /* write buffer 512B */
Mark Lorde12bef52008-03-31 19:33:56 -0400319 EDMA_CFG_EDMA_FBS = (1 << 16), /* EDMA FIS-Based Switching */
320 EDMA_CFG_FBS = (1 << 26), /* FIS-Based Switching */
Brett Russ20f733e2005-09-01 18:26:17 -0400321
Mark Lordcae5a292009-04-06 16:43:45 -0400322 EDMA_ERR_IRQ_CAUSE = 0x8,
323 EDMA_ERR_IRQ_MASK = 0xc,
Jeff Garzik6c1153e2007-07-13 15:20:15 -0400324 EDMA_ERR_D_PAR = (1 << 0), /* UDMA data parity err */
325 EDMA_ERR_PRD_PAR = (1 << 1), /* UDMA PRD parity err */
326 EDMA_ERR_DEV = (1 << 2), /* device error */
327 EDMA_ERR_DEV_DCON = (1 << 3), /* device disconnect */
328 EDMA_ERR_DEV_CON = (1 << 4), /* device connected */
329 EDMA_ERR_SERR = (1 << 5), /* SError bits [WBDST] raised */
Jeff Garzikc5d3e452007-07-11 18:30:50 -0400330 EDMA_ERR_SELF_DIS = (1 << 7), /* Gen II/IIE self-disable */
331 EDMA_ERR_SELF_DIS_5 = (1 << 8), /* Gen I self-disable */
Jeff Garzik6c1153e2007-07-13 15:20:15 -0400332 EDMA_ERR_BIST_ASYNC = (1 << 8), /* BIST FIS or Async Notify */
Jeff Garzikc5d3e452007-07-11 18:30:50 -0400333 EDMA_ERR_TRANS_IRQ_7 = (1 << 8), /* Gen IIE transprt layer irq */
Jeff Garzik6c1153e2007-07-13 15:20:15 -0400334 EDMA_ERR_CRQB_PAR = (1 << 9), /* CRQB parity error */
335 EDMA_ERR_CRPB_PAR = (1 << 10), /* CRPB parity error */
336 EDMA_ERR_INTRL_PAR = (1 << 11), /* internal parity error */
337 EDMA_ERR_IORDY = (1 << 12), /* IORdy timeout */
Mark Lord646a4da2008-01-26 18:30:37 -0500338
Jeff Garzik6c1153e2007-07-13 15:20:15 -0400339 EDMA_ERR_LNK_CTRL_RX = (0xf << 13), /* link ctrl rx error */
Mark Lord646a4da2008-01-26 18:30:37 -0500340 EDMA_ERR_LNK_CTRL_RX_0 = (1 << 13), /* transient: CRC err */
341 EDMA_ERR_LNK_CTRL_RX_1 = (1 << 14), /* transient: FIFO err */
342 EDMA_ERR_LNK_CTRL_RX_2 = (1 << 15), /* fatal: caught SYNC */
343 EDMA_ERR_LNK_CTRL_RX_3 = (1 << 16), /* transient: FIS rx err */
344
Jeff Garzik6c1153e2007-07-13 15:20:15 -0400345 EDMA_ERR_LNK_DATA_RX = (0xf << 17), /* link data rx error */
Mark Lord646a4da2008-01-26 18:30:37 -0500346
Jeff Garzik6c1153e2007-07-13 15:20:15 -0400347 EDMA_ERR_LNK_CTRL_TX = (0x1f << 21), /* link ctrl tx error */
Mark Lord646a4da2008-01-26 18:30:37 -0500348 EDMA_ERR_LNK_CTRL_TX_0 = (1 << 21), /* transient: CRC err */
349 EDMA_ERR_LNK_CTRL_TX_1 = (1 << 22), /* transient: FIFO err */
350 EDMA_ERR_LNK_CTRL_TX_2 = (1 << 23), /* transient: caught SYNC */
351 EDMA_ERR_LNK_CTRL_TX_3 = (1 << 24), /* transient: caught DMAT */
352 EDMA_ERR_LNK_CTRL_TX_4 = (1 << 25), /* transient: FIS collision */
353
Jeff Garzik6c1153e2007-07-13 15:20:15 -0400354 EDMA_ERR_LNK_DATA_TX = (0x1f << 26), /* link data tx error */
Mark Lord646a4da2008-01-26 18:30:37 -0500355
Jeff Garzik6c1153e2007-07-13 15:20:15 -0400356 EDMA_ERR_TRANS_PROTO = (1 << 31), /* transport protocol error */
Jeff Garzikc5d3e452007-07-11 18:30:50 -0400357 EDMA_ERR_OVERRUN_5 = (1 << 5),
358 EDMA_ERR_UNDERRUN_5 = (1 << 6),
Mark Lord646a4da2008-01-26 18:30:37 -0500359
360 EDMA_ERR_IRQ_TRANSIENT = EDMA_ERR_LNK_CTRL_RX_0 |
361 EDMA_ERR_LNK_CTRL_RX_1 |
362 EDMA_ERR_LNK_CTRL_RX_3 |
Mark Lord85afb932008-04-19 14:54:41 -0400363 EDMA_ERR_LNK_CTRL_TX,
Mark Lord646a4da2008-01-26 18:30:37 -0500364
Jeff Garzikbdd4ddd2007-07-12 14:34:26 -0400365 EDMA_EH_FREEZE = EDMA_ERR_D_PAR |
366 EDMA_ERR_PRD_PAR |
367 EDMA_ERR_DEV_DCON |
368 EDMA_ERR_DEV_CON |
369 EDMA_ERR_SERR |
370 EDMA_ERR_SELF_DIS |
Jeff Garzik6c1153e2007-07-13 15:20:15 -0400371 EDMA_ERR_CRQB_PAR |
Jeff Garzikbdd4ddd2007-07-12 14:34:26 -0400372 EDMA_ERR_CRPB_PAR |
373 EDMA_ERR_INTRL_PAR |
374 EDMA_ERR_IORDY |
375 EDMA_ERR_LNK_CTRL_RX_2 |
376 EDMA_ERR_LNK_DATA_RX |
377 EDMA_ERR_LNK_DATA_TX |
378 EDMA_ERR_TRANS_PROTO,
Mark Lorde12bef52008-03-31 19:33:56 -0400379
Jeff Garzikbdd4ddd2007-07-12 14:34:26 -0400380 EDMA_EH_FREEZE_5 = EDMA_ERR_D_PAR |
381 EDMA_ERR_PRD_PAR |
382 EDMA_ERR_DEV_DCON |
383 EDMA_ERR_DEV_CON |
384 EDMA_ERR_OVERRUN_5 |
385 EDMA_ERR_UNDERRUN_5 |
386 EDMA_ERR_SELF_DIS_5 |
Jeff Garzik6c1153e2007-07-13 15:20:15 -0400387 EDMA_ERR_CRQB_PAR |
Jeff Garzikbdd4ddd2007-07-12 14:34:26 -0400388 EDMA_ERR_CRPB_PAR |
389 EDMA_ERR_INTRL_PAR |
390 EDMA_ERR_IORDY,
Brett Russ20f733e2005-09-01 18:26:17 -0400391
Mark Lordcae5a292009-04-06 16:43:45 -0400392 EDMA_REQ_Q_BASE_HI = 0x10,
393 EDMA_REQ_Q_IN_PTR = 0x14, /* also contains BASE_LO */
Brett Russ31961942005-09-30 01:36:00 -0400394
Mark Lordcae5a292009-04-06 16:43:45 -0400395 EDMA_REQ_Q_OUT_PTR = 0x18,
Brett Russ31961942005-09-30 01:36:00 -0400396 EDMA_REQ_Q_PTR_SHIFT = 5,
397
Mark Lordcae5a292009-04-06 16:43:45 -0400398 EDMA_RSP_Q_BASE_HI = 0x1c,
399 EDMA_RSP_Q_IN_PTR = 0x20,
400 EDMA_RSP_Q_OUT_PTR = 0x24, /* also contains BASE_LO */
Brett Russ31961942005-09-30 01:36:00 -0400401 EDMA_RSP_Q_PTR_SHIFT = 3,
402
Mark Lordcae5a292009-04-06 16:43:45 -0400403 EDMA_CMD = 0x28, /* EDMA command register */
Jeff Garzik0ea9e172007-07-13 17:06:45 -0400404 EDMA_EN = (1 << 0), /* enable EDMA */
405 EDMA_DS = (1 << 1), /* disable EDMA; self-negated */
Mark Lord8e7decd2008-05-02 02:07:51 -0400406 EDMA_RESET = (1 << 2), /* reset eng/trans/link/phy */
Brett Russ20f733e2005-09-01 18:26:17 -0400407
Mark Lordcae5a292009-04-06 16:43:45 -0400408 EDMA_STATUS = 0x30, /* EDMA engine status */
Mark Lord8e7decd2008-05-02 02:07:51 -0400409 EDMA_STATUS_CACHE_EMPTY = (1 << 6), /* GenIIe command cache empty */
410 EDMA_STATUS_IDLE = (1 << 7), /* GenIIe EDMA enabled/idle */
411
Mark Lordcae5a292009-04-06 16:43:45 -0400412 EDMA_IORDY_TMOUT = 0x34,
413 EDMA_ARB_CFG = 0x38,
Mark Lord8e7decd2008-05-02 02:07:51 -0400414
Mark Lordcae5a292009-04-06 16:43:45 -0400415 EDMA_HALTCOND = 0x60, /* GenIIe halt conditions */
416 EDMA_UNKNOWN_RSVD = 0x6C, /* GenIIe unknown/reserved */
Mark Lordda142652009-01-30 18:51:54 -0500417
Mark Lordcae5a292009-04-06 16:43:45 -0400418 BMDMA_CMD = 0x224, /* bmdma command register */
419 BMDMA_STATUS = 0x228, /* bmdma status register */
420 BMDMA_PRD_LOW = 0x22c, /* bmdma PRD addr 31:0 */
421 BMDMA_PRD_HIGH = 0x230, /* bmdma PRD addr 63:32 */
Mark Lordda142652009-01-30 18:51:54 -0500422
Brett Russ31961942005-09-30 01:36:00 -0400423 /* Host private flags (hp_flags) */
424 MV_HP_FLAG_MSI = (1 << 0),
Jeff Garzik47c2b672005-11-12 21:13:17 -0500425 MV_HP_ERRATA_50XXB0 = (1 << 1),
426 MV_HP_ERRATA_50XXB2 = (1 << 2),
427 MV_HP_ERRATA_60X1B2 = (1 << 3),
428 MV_HP_ERRATA_60X1C0 = (1 << 4),
Jeff Garzik0ea9e172007-07-13 17:06:45 -0400429 MV_HP_GEN_I = (1 << 6), /* Generation I: 50xx */
430 MV_HP_GEN_II = (1 << 7), /* Generation II: 60xx */
431 MV_HP_GEN_IIE = (1 << 8), /* Generation IIE: 6042/7042 */
Mark Lord02a121d2007-12-01 13:07:22 -0500432 MV_HP_PCIE = (1 << 9), /* PCIe bus/regs: 7042 */
Mark Lord616d4a92008-05-02 02:08:32 -0400433 MV_HP_CUT_THROUGH = (1 << 10), /* can use EDMA cut-through */
Mark Lord1f398472008-05-27 17:54:48 -0400434 MV_HP_FLAG_SOC = (1 << 11), /* SystemOnChip, no PCI */
Mark Lord000b3442009-03-15 11:33:19 -0400435 MV_HP_QUIRK_LED_BLINK_EN = (1 << 12), /* is led blinking enabled? */
Lior Amsalem9013d642014-01-14 20:09:57 +0100436 MV_HP_FIX_LP_PHY_CTL = (1 << 13), /* fix speed in LP_PHY_CTL ? */
Brett Russ20f733e2005-09-01 18:26:17 -0400437
Brett Russ31961942005-09-30 01:36:00 -0400438 /* Port private flags (pp_flags) */
Jeff Garzik0ea9e172007-07-13 17:06:45 -0400439 MV_PP_FLAG_EDMA_EN = (1 << 0), /* is EDMA engine enabled? */
Mark Lord72109162008-01-26 18:31:33 -0500440 MV_PP_FLAG_NCQ_EN = (1 << 1), /* is EDMA set up for NCQ? */
Mark Lord00f42ea2008-05-02 02:11:45 -0400441 MV_PP_FLAG_FBS_EN = (1 << 2), /* is EDMA set up for FBS? */
Mark Lord29d187b2008-05-02 02:15:37 -0400442 MV_PP_FLAG_DELAYED_EH = (1 << 3), /* delayed dev err handling */
Mark Lordd16ab3f2009-02-25 15:17:43 -0500443 MV_PP_FLAG_FAKE_ATA_BUSY = (1 << 4), /* ignore initial ATA_DRDY */
Brett Russ31961942005-09-30 01:36:00 -0400444};
445
Jeff Garzikee9ccdf2007-07-12 15:51:22 -0400446#define IS_GEN_I(hpriv) ((hpriv)->hp_flags & MV_HP_GEN_I)
447#define IS_GEN_II(hpriv) ((hpriv)->hp_flags & MV_HP_GEN_II)
Jeff Garzike4e7b892006-01-31 12:18:41 -0500448#define IS_GEN_IIE(hpriv) ((hpriv)->hp_flags & MV_HP_GEN_IIE)
Mark Lord8e7decd2008-05-02 02:07:51 -0400449#define IS_PCIE(hpriv) ((hpriv)->hp_flags & MV_HP_PCIE)
Mark Lord1f398472008-05-27 17:54:48 -0400450#define IS_SOC(hpriv) ((hpriv)->hp_flags & MV_HP_FLAG_SOC)
Jeff Garzikbca1c4e2005-11-12 12:48:15 -0500451
Lennert Buytenhek15a32632008-03-27 14:51:39 -0400452#define WINDOW_CTRL(i) (0x20030 + ((i) << 4))
453#define WINDOW_BASE(i) (0x20034 + ((i) << 4))
454
Jeff Garzik095fec82005-11-12 09:50:49 -0500455enum {
Jeff Garzikbaf14aa2007-10-09 13:51:57 -0400456 /* DMA boundary 0xffff is required by the s/g splitting
457 * we need on /length/ in mv_fill-sg().
458 */
459 MV_DMA_BOUNDARY = 0xffffU,
Jeff Garzik095fec82005-11-12 09:50:49 -0500460
Jeff Garzik0ea9e172007-07-13 17:06:45 -0400461 /* mask of register bits containing lower 32 bits
462 * of EDMA request queue DMA address
463 */
Jeff Garzik095fec82005-11-12 09:50:49 -0500464 EDMA_REQ_Q_BASE_LO_MASK = 0xfffffc00U,
465
Jeff Garzik0ea9e172007-07-13 17:06:45 -0400466 /* ditto, for response queue */
Jeff Garzik095fec82005-11-12 09:50:49 -0500467 EDMA_RSP_Q_BASE_LO_MASK = 0xffffff00U,
468};
469
Jeff Garzik522479f2005-11-12 22:14:02 -0500470enum chip_type {
471 chip_504x,
472 chip_508x,
473 chip_5080,
474 chip_604x,
475 chip_608x,
Jeff Garzike4e7b892006-01-31 12:18:41 -0500476 chip_6042,
477 chip_7042,
Saeed Bisharaf351b2d2008-02-01 18:08:03 -0500478 chip_soc,
Jeff Garzik522479f2005-11-12 22:14:02 -0500479};
480
Brett Russ31961942005-09-30 01:36:00 -0400481/* Command ReQuest Block: 32B */
482struct mv_crqb {
Mark Lorde1469872006-05-22 19:02:03 -0400483 __le32 sg_addr;
484 __le32 sg_addr_hi;
485 __le16 ctrl_flags;
486 __le16 ata_cmd[11];
Brett Russ31961942005-09-30 01:36:00 -0400487};
488
Jeff Garzike4e7b892006-01-31 12:18:41 -0500489struct mv_crqb_iie {
Mark Lorde1469872006-05-22 19:02:03 -0400490 __le32 addr;
491 __le32 addr_hi;
492 __le32 flags;
493 __le32 len;
494 __le32 ata_cmd[4];
Jeff Garzike4e7b892006-01-31 12:18:41 -0500495};
496
Brett Russ31961942005-09-30 01:36:00 -0400497/* Command ResPonse Block: 8B */
498struct mv_crpb {
Mark Lorde1469872006-05-22 19:02:03 -0400499 __le16 id;
500 __le16 flags;
501 __le32 tmstmp;
Brett Russ31961942005-09-30 01:36:00 -0400502};
503
504/* EDMA Physical Region Descriptor (ePRD); A.K.A. SG */
505struct mv_sg {
Mark Lorde1469872006-05-22 19:02:03 -0400506 __le32 addr;
507 __le32 flags_size;
508 __le32 addr_hi;
509 __le32 reserved;
Brett Russ20f733e2005-09-01 18:26:17 -0400510};
511
Mark Lord08da1752009-02-25 15:13:03 -0500512/*
513 * We keep a local cache of a few frequently accessed port
514 * registers here, to avoid having to read them (very slow)
515 * when switching between EDMA and non-EDMA modes.
516 */
517struct mv_cached_regs {
518 u32 fiscfg;
519 u32 ltmode;
520 u32 haltcond;
Mark Lordc01e8a22009-02-25 15:14:48 -0500521 u32 unknown_rsvd;
Mark Lord08da1752009-02-25 15:13:03 -0500522};
523
Brett Russ20f733e2005-09-01 18:26:17 -0400524struct mv_port_priv {
Brett Russ31961942005-09-30 01:36:00 -0400525 struct mv_crqb *crqb;
526 dma_addr_t crqb_dma;
527 struct mv_crpb *crpb;
528 dma_addr_t crpb_dma;
Mark Lordeb73d552008-01-29 13:24:00 -0500529 struct mv_sg *sg_tbl[MV_MAX_Q_DEPTH];
530 dma_addr_t sg_tbl_dma[MV_MAX_Q_DEPTH];
Jeff Garzikbdd4ddd2007-07-12 14:34:26 -0400531
532 unsigned int req_idx;
533 unsigned int resp_idx;
534
Brett Russ31961942005-09-30 01:36:00 -0400535 u32 pp_flags;
Mark Lord08da1752009-02-25 15:13:03 -0500536 struct mv_cached_regs cached;
Mark Lord29d187b2008-05-02 02:15:37 -0400537 unsigned int delayed_eh_pmp_map;
Brett Russ20f733e2005-09-01 18:26:17 -0400538};
539
Jeff Garzikbca1c4e2005-11-12 12:48:15 -0500540struct mv_port_signal {
541 u32 amps;
542 u32 pre;
543};
544
Mark Lord02a121d2007-12-01 13:07:22 -0500545struct mv_host_priv {
546 u32 hp_flags;
Saeed Bishara1bfeff02009-12-17 01:05:00 -0500547 unsigned int board_idx;
Mark Lord96e2c4872008-05-17 13:38:00 -0400548 u32 main_irq_mask;
Mark Lord02a121d2007-12-01 13:07:22 -0500549 struct mv_port_signal signal[8];
550 const struct mv_hw_ops *ops;
Saeed Bisharaf351b2d2008-02-01 18:08:03 -0500551 int n_ports;
552 void __iomem *base;
Mark Lord7368f912008-04-25 11:24:24 -0400553 void __iomem *main_irq_cause_addr;
554 void __iomem *main_irq_mask_addr;
Mark Lordcae5a292009-04-06 16:43:45 -0400555 u32 irq_cause_offset;
556 u32 irq_mask_offset;
Mark Lord02a121d2007-12-01 13:07:22 -0500557 u32 unmask_all_irqs;
Saeed Bisharac77a2f42009-12-06 18:26:18 +0200558
Ezequiel Garciae0067f02013-07-29 23:46:03 -0300559 /*
560 * Needed on some devices that require their clocks to be enabled.
561 * These are optional: if the platform device does not have any
562 * clocks, they won't be used. Also, if the underlying hardware
563 * does not support the common clock framework (CONFIG_HAVE_CLK=n),
564 * all the clock operations become no-ops (see clk.h).
565 */
Saeed Bisharac77a2f42009-12-06 18:26:18 +0200566 struct clk *clk;
Andrew Lunneee98992012-02-18 22:26:42 +0100567 struct clk **port_clks;
Mark Lordda2fa9b2008-01-26 18:32:45 -0500568 /*
Andrew Lunnb7db4f22013-12-26 18:25:41 +0100569 * Some devices have a SATA PHY which can be enabled/disabled
570 * in order to save power. These are optional: if the platform
571 * devices does not have any phy, they won't be used.
572 */
573 struct phy **port_phys;
574 /*
Mark Lordda2fa9b2008-01-26 18:32:45 -0500575 * These consistent DMA memory pools give us guaranteed
576 * alignment for hardware-accessed data structures,
577 * and less memory waste in accomplishing the alignment.
578 */
579 struct dma_pool *crqb_pool;
580 struct dma_pool *crpb_pool;
581 struct dma_pool *sg_tbl_pool;
Mark Lord02a121d2007-12-01 13:07:22 -0500582};
583
Jeff Garzik47c2b672005-11-12 21:13:17 -0500584struct mv_hw_ops {
Jeff Garzik2a47ce02005-11-12 23:05:14 -0500585 void (*phy_errata)(struct mv_host_priv *hpriv, void __iomem *mmio,
586 unsigned int port);
Jeff Garzik47c2b672005-11-12 21:13:17 -0500587 void (*enable_leds)(struct mv_host_priv *hpriv, void __iomem *mmio);
588 void (*read_preamp)(struct mv_host_priv *hpriv, int idx,
589 void __iomem *mmio);
Jeff Garzikc9d39132005-11-13 17:47:51 -0500590 int (*reset_hc)(struct mv_host_priv *hpriv, void __iomem *mmio,
591 unsigned int n_hc);
Jeff Garzik522479f2005-11-12 22:14:02 -0500592 void (*reset_flash)(struct mv_host_priv *hpriv, void __iomem *mmio);
Saeed Bishara7bb3c522008-01-30 11:50:45 -1100593 void (*reset_bus)(struct ata_host *host, void __iomem *mmio);
Jeff Garzik47c2b672005-11-12 21:13:17 -0500594};
595
Tejun Heo82ef04f2008-07-31 17:02:40 +0900596static int mv_scr_read(struct ata_link *link, unsigned int sc_reg_in, u32 *val);
597static int mv_scr_write(struct ata_link *link, unsigned int sc_reg_in, u32 val);
598static int mv5_scr_read(struct ata_link *link, unsigned int sc_reg_in, u32 *val);
599static int mv5_scr_write(struct ata_link *link, unsigned int sc_reg_in, u32 val);
Brett Russ31961942005-09-30 01:36:00 -0400600static int mv_port_start(struct ata_port *ap);
601static void mv_port_stop(struct ata_port *ap);
Mark Lord3e4a1392008-05-02 02:10:02 -0400602static int mv_qc_defer(struct ata_queued_cmd *qc);
Brett Russ31961942005-09-30 01:36:00 -0400603static void mv_qc_prep(struct ata_queued_cmd *qc);
Jeff Garzike4e7b892006-01-31 12:18:41 -0500604static void mv_qc_prep_iie(struct ata_queued_cmd *qc);
Tejun Heo9a3d9eb2006-01-23 13:09:36 +0900605static unsigned int mv_qc_issue(struct ata_queued_cmd *qc);
Tejun Heoa1efdab2008-03-25 12:22:50 +0900606static int mv_hardreset(struct ata_link *link, unsigned int *class,
607 unsigned long deadline);
Jeff Garzikbdd4ddd2007-07-12 14:34:26 -0400608static void mv_eh_freeze(struct ata_port *ap);
609static void mv_eh_thaw(struct ata_port *ap);
Mark Lordf2738272008-01-26 18:32:29 -0500610static void mv6_dev_config(struct ata_device *dev);
Brett Russ20f733e2005-09-01 18:26:17 -0400611
Jeff Garzik2a47ce02005-11-12 23:05:14 -0500612static void mv5_phy_errata(struct mv_host_priv *hpriv, void __iomem *mmio,
613 unsigned int port);
Jeff Garzik47c2b672005-11-12 21:13:17 -0500614static void mv5_enable_leds(struct mv_host_priv *hpriv, void __iomem *mmio);
615static void mv5_read_preamp(struct mv_host_priv *hpriv, int idx,
616 void __iomem *mmio);
Jeff Garzikc9d39132005-11-13 17:47:51 -0500617static int mv5_reset_hc(struct mv_host_priv *hpriv, void __iomem *mmio,
618 unsigned int n_hc);
Jeff Garzik522479f2005-11-12 22:14:02 -0500619static void mv5_reset_flash(struct mv_host_priv *hpriv, void __iomem *mmio);
Saeed Bishara7bb3c522008-01-30 11:50:45 -1100620static void mv5_reset_bus(struct ata_host *host, void __iomem *mmio);
Jeff Garzik47c2b672005-11-12 21:13:17 -0500621
Jeff Garzik2a47ce02005-11-12 23:05:14 -0500622static void mv6_phy_errata(struct mv_host_priv *hpriv, void __iomem *mmio,
623 unsigned int port);
Jeff Garzik47c2b672005-11-12 21:13:17 -0500624static void mv6_enable_leds(struct mv_host_priv *hpriv, void __iomem *mmio);
625static void mv6_read_preamp(struct mv_host_priv *hpriv, int idx,
626 void __iomem *mmio);
Jeff Garzikc9d39132005-11-13 17:47:51 -0500627static int mv6_reset_hc(struct mv_host_priv *hpriv, void __iomem *mmio,
628 unsigned int n_hc);
Jeff Garzik522479f2005-11-12 22:14:02 -0500629static void mv6_reset_flash(struct mv_host_priv *hpriv, void __iomem *mmio);
Saeed Bisharaf351b2d2008-02-01 18:08:03 -0500630static void mv_soc_enable_leds(struct mv_host_priv *hpriv,
631 void __iomem *mmio);
632static void mv_soc_read_preamp(struct mv_host_priv *hpriv, int idx,
633 void __iomem *mmio);
634static int mv_soc_reset_hc(struct mv_host_priv *hpriv,
635 void __iomem *mmio, unsigned int n_hc);
636static void mv_soc_reset_flash(struct mv_host_priv *hpriv,
637 void __iomem *mmio);
638static void mv_soc_reset_bus(struct ata_host *host, void __iomem *mmio);
Martin Michlmayr29b7e432009-05-04 20:58:50 +0200639static void mv_soc_65n_phy_errata(struct mv_host_priv *hpriv,
640 void __iomem *mmio, unsigned int port);
Saeed Bishara7bb3c522008-01-30 11:50:45 -1100641static void mv_reset_pci_bus(struct ata_host *host, void __iomem *mmio);
Mark Lorde12bef52008-03-31 19:33:56 -0400642static void mv_reset_channel(struct mv_host_priv *hpriv, void __iomem *mmio,
Jeff Garzikc9d39132005-11-13 17:47:51 -0500643 unsigned int port_no);
Mark Lorde12bef52008-03-31 19:33:56 -0400644static int mv_stop_edma(struct ata_port *ap);
Mark Lordb5624682008-03-31 19:34:40 -0400645static int mv_stop_edma_engine(void __iomem *port_mmio);
Mark Lord00b81232009-01-30 18:47:51 -0500646static void mv_edma_cfg(struct ata_port *ap, int want_ncq, int want_edma);
Jeff Garzik47c2b672005-11-12 21:13:17 -0500647
Mark Lorde49856d2008-04-16 14:59:07 -0400648static void mv_pmp_select(struct ata_port *ap, int pmp);
649static int mv_pmp_hardreset(struct ata_link *link, unsigned int *class,
650 unsigned long deadline);
651static int mv_softreset(struct ata_link *link, unsigned int *class,
652 unsigned long deadline);
Mark Lord29d187b2008-05-02 02:15:37 -0400653static void mv_pmp_error_handler(struct ata_port *ap);
Mark Lord4c299ca2008-05-02 02:16:20 -0400654static void mv_process_crpb_entries(struct ata_port *ap,
655 struct mv_port_priv *pp);
Brett Russ20f733e2005-09-01 18:26:17 -0400656
Mark Lordda142652009-01-30 18:51:54 -0500657static void mv_sff_irq_clear(struct ata_port *ap);
658static int mv_check_atapi_dma(struct ata_queued_cmd *qc);
659static void mv_bmdma_setup(struct ata_queued_cmd *qc);
660static void mv_bmdma_start(struct ata_queued_cmd *qc);
661static void mv_bmdma_stop(struct ata_queued_cmd *qc);
662static u8 mv_bmdma_status(struct ata_port *ap);
Mark Lordd16ab3f2009-02-25 15:17:43 -0500663static u8 mv_sff_check_status(struct ata_port *ap);
Mark Lordda142652009-01-30 18:51:54 -0500664
Mark Lordeb73d552008-01-29 13:24:00 -0500665/* .sg_tablesize is (MV_MAX_SG_CT / 2) in the structures below
666 * because we have to allow room for worst case splitting of
667 * PRDs for 64K boundaries in mv_fill_sg().
668 */
Andrew Lunn13b74082012-09-28 17:04:10 +0200669#ifdef CONFIG_PCI
Jeff Garzikc5d3e452007-07-11 18:30:50 -0400670static struct scsi_host_template mv5_sht = {
Tejun Heo68d1d072008-03-25 12:22:49 +0900671 ATA_BASE_SHT(DRV_NAME),
Jeff Garzikbaf14aa2007-10-09 13:51:57 -0400672 .sg_tablesize = MV_MAX_SG_CT / 2,
Jeff Garzikc5d3e452007-07-11 18:30:50 -0400673 .dma_boundary = MV_DMA_BOUNDARY,
Jeff Garzikc5d3e452007-07-11 18:30:50 -0400674};
Andrew Lunn13b74082012-09-28 17:04:10 +0200675#endif
Jeff Garzikc5d3e452007-07-11 18:30:50 -0400676static struct scsi_host_template mv6_sht = {
Tejun Heo68d1d072008-03-25 12:22:49 +0900677 ATA_NCQ_SHT(DRV_NAME),
Mark Lord138bfdd2008-01-26 18:33:18 -0500678 .can_queue = MV_MAX_Q_DEPTH - 1,
Jeff Garzikbaf14aa2007-10-09 13:51:57 -0400679 .sg_tablesize = MV_MAX_SG_CT / 2,
Brett Russ20f733e2005-09-01 18:26:17 -0400680 .dma_boundary = MV_DMA_BOUNDARY,
Brett Russ20f733e2005-09-01 18:26:17 -0400681};
682
Tejun Heo029cfd62008-03-25 12:22:49 +0900683static struct ata_port_operations mv5_ops = {
684 .inherits = &ata_sff_port_ops,
Jeff Garzikc9d39132005-11-13 17:47:51 -0500685
Alan Coxc96f1732009-03-24 10:23:46 +0000686 .lost_interrupt = ATA_OP_NULL,
687
Mark Lord3e4a1392008-05-02 02:10:02 -0400688 .qc_defer = mv_qc_defer,
Jeff Garzikc9d39132005-11-13 17:47:51 -0500689 .qc_prep = mv_qc_prep,
690 .qc_issue = mv_qc_issue,
691
Jeff Garzikbdd4ddd2007-07-12 14:34:26 -0400692 .freeze = mv_eh_freeze,
693 .thaw = mv_eh_thaw,
Tejun Heoa1efdab2008-03-25 12:22:50 +0900694 .hardreset = mv_hardreset,
Jeff Garzikbdd4ddd2007-07-12 14:34:26 -0400695
Jeff Garzikc9d39132005-11-13 17:47:51 -0500696 .scr_read = mv5_scr_read,
697 .scr_write = mv5_scr_write,
698
699 .port_start = mv_port_start,
700 .port_stop = mv_port_stop,
Jeff Garzikc9d39132005-11-13 17:47:51 -0500701};
702
Tejun Heo029cfd62008-03-25 12:22:49 +0900703static struct ata_port_operations mv6_ops = {
Tejun Heo8930ff22010-05-10 21:41:33 +0200704 .inherits = &ata_bmdma_port_ops,
Brett Russ20f733e2005-09-01 18:26:17 -0400705
Tejun Heo8930ff22010-05-10 21:41:33 +0200706 .lost_interrupt = ATA_OP_NULL,
707
708 .qc_defer = mv_qc_defer,
709 .qc_prep = mv_qc_prep,
710 .qc_issue = mv_qc_issue,
711
712 .dev_config = mv6_dev_config,
713
714 .freeze = mv_eh_freeze,
715 .thaw = mv_eh_thaw,
716 .hardreset = mv_hardreset,
717 .softreset = mv_softreset,
Mark Lorde49856d2008-04-16 14:59:07 -0400718 .pmp_hardreset = mv_pmp_hardreset,
719 .pmp_softreset = mv_softreset,
Mark Lord29d187b2008-05-02 02:15:37 -0400720 .error_handler = mv_pmp_error_handler,
Mark Lordda142652009-01-30 18:51:54 -0500721
Tejun Heo8930ff22010-05-10 21:41:33 +0200722 .scr_read = mv_scr_read,
723 .scr_write = mv_scr_write,
724
Mark Lord40f21b12009-03-10 18:51:04 -0400725 .sff_check_status = mv_sff_check_status,
Mark Lordda142652009-01-30 18:51:54 -0500726 .sff_irq_clear = mv_sff_irq_clear,
727 .check_atapi_dma = mv_check_atapi_dma,
728 .bmdma_setup = mv_bmdma_setup,
729 .bmdma_start = mv_bmdma_start,
730 .bmdma_stop = mv_bmdma_stop,
731 .bmdma_status = mv_bmdma_status,
Tejun Heo8930ff22010-05-10 21:41:33 +0200732
733 .port_start = mv_port_start,
734 .port_stop = mv_port_stop,
Brett Russ20f733e2005-09-01 18:26:17 -0400735};
736
Tejun Heo029cfd62008-03-25 12:22:49 +0900737static struct ata_port_operations mv_iie_ops = {
738 .inherits = &mv6_ops,
739 .dev_config = ATA_OP_NULL,
Jeff Garzike4e7b892006-01-31 12:18:41 -0500740 .qc_prep = mv_qc_prep_iie,
Jeff Garzike4e7b892006-01-31 12:18:41 -0500741};
742
Arjan van de Ven98ac62d2005-11-28 10:06:23 +0100743static const struct ata_port_info mv_port_info[] = {
Brett Russ20f733e2005-09-01 18:26:17 -0400744 { /* chip_504x */
Mark Lord91b1a842009-01-30 18:46:39 -0500745 .flags = MV_GEN_I_FLAGS,
Mark Lordc361acb2009-04-06 15:22:21 -0400746 .pio_mask = ATA_PIO4,
Jeff Garzikbf6263a2007-07-09 12:16:50 -0400747 .udma_mask = ATA_UDMA6,
Jeff Garzikc9d39132005-11-13 17:47:51 -0500748 .port_ops = &mv5_ops,
Brett Russ20f733e2005-09-01 18:26:17 -0400749 },
750 { /* chip_508x */
Mark Lord91b1a842009-01-30 18:46:39 -0500751 .flags = MV_GEN_I_FLAGS | MV_FLAG_DUAL_HC,
Mark Lordc361acb2009-04-06 15:22:21 -0400752 .pio_mask = ATA_PIO4,
Jeff Garzikbf6263a2007-07-09 12:16:50 -0400753 .udma_mask = ATA_UDMA6,
Jeff Garzikc9d39132005-11-13 17:47:51 -0500754 .port_ops = &mv5_ops,
Brett Russ20f733e2005-09-01 18:26:17 -0400755 },
Jeff Garzik47c2b672005-11-12 21:13:17 -0500756 { /* chip_5080 */
Mark Lord91b1a842009-01-30 18:46:39 -0500757 .flags = MV_GEN_I_FLAGS | MV_FLAG_DUAL_HC,
Mark Lordc361acb2009-04-06 15:22:21 -0400758 .pio_mask = ATA_PIO4,
Jeff Garzikbf6263a2007-07-09 12:16:50 -0400759 .udma_mask = ATA_UDMA6,
Jeff Garzikc9d39132005-11-13 17:47:51 -0500760 .port_ops = &mv5_ops,
Jeff Garzik47c2b672005-11-12 21:13:17 -0500761 },
Brett Russ20f733e2005-09-01 18:26:17 -0400762 { /* chip_604x */
Mark Lord91b1a842009-01-30 18:46:39 -0500763 .flags = MV_GEN_II_FLAGS,
Mark Lordc361acb2009-04-06 15:22:21 -0400764 .pio_mask = ATA_PIO4,
Jeff Garzikbf6263a2007-07-09 12:16:50 -0400765 .udma_mask = ATA_UDMA6,
Jeff Garzikc9d39132005-11-13 17:47:51 -0500766 .port_ops = &mv6_ops,
Brett Russ20f733e2005-09-01 18:26:17 -0400767 },
768 { /* chip_608x */
Mark Lord91b1a842009-01-30 18:46:39 -0500769 .flags = MV_GEN_II_FLAGS | MV_FLAG_DUAL_HC,
Mark Lordc361acb2009-04-06 15:22:21 -0400770 .pio_mask = ATA_PIO4,
Jeff Garzikbf6263a2007-07-09 12:16:50 -0400771 .udma_mask = ATA_UDMA6,
Jeff Garzikc9d39132005-11-13 17:47:51 -0500772 .port_ops = &mv6_ops,
Brett Russ20f733e2005-09-01 18:26:17 -0400773 },
Jeff Garzike4e7b892006-01-31 12:18:41 -0500774 { /* chip_6042 */
Mark Lord91b1a842009-01-30 18:46:39 -0500775 .flags = MV_GEN_IIE_FLAGS,
Mark Lordc361acb2009-04-06 15:22:21 -0400776 .pio_mask = ATA_PIO4,
Jeff Garzikbf6263a2007-07-09 12:16:50 -0400777 .udma_mask = ATA_UDMA6,
Jeff Garzike4e7b892006-01-31 12:18:41 -0500778 .port_ops = &mv_iie_ops,
779 },
780 { /* chip_7042 */
Mark Lord91b1a842009-01-30 18:46:39 -0500781 .flags = MV_GEN_IIE_FLAGS,
Mark Lordc361acb2009-04-06 15:22:21 -0400782 .pio_mask = ATA_PIO4,
Jeff Garzikbf6263a2007-07-09 12:16:50 -0400783 .udma_mask = ATA_UDMA6,
Jeff Garzike4e7b892006-01-31 12:18:41 -0500784 .port_ops = &mv_iie_ops,
785 },
Saeed Bisharaf351b2d2008-02-01 18:08:03 -0500786 { /* chip_soc */
Mark Lord91b1a842009-01-30 18:46:39 -0500787 .flags = MV_GEN_IIE_FLAGS,
Mark Lordc361acb2009-04-06 15:22:21 -0400788 .pio_mask = ATA_PIO4,
Mark Lord17c5aab2008-04-16 14:56:51 -0400789 .udma_mask = ATA_UDMA6,
790 .port_ops = &mv_iie_ops,
Saeed Bisharaf351b2d2008-02-01 18:08:03 -0500791 },
Brett Russ20f733e2005-09-01 18:26:17 -0400792};
793
Jeff Garzik3b7d6972005-11-10 11:04:11 -0500794static const struct pci_device_id mv_pci_tbl[] = {
Jeff Garzik2d2744f2006-09-28 20:21:59 -0400795 { PCI_VDEVICE(MARVELL, 0x5040), chip_504x },
796 { PCI_VDEVICE(MARVELL, 0x5041), chip_504x },
797 { PCI_VDEVICE(MARVELL, 0x5080), chip_5080 },
798 { PCI_VDEVICE(MARVELL, 0x5081), chip_508x },
Mark Lord46c57842008-09-04 18:21:07 -0400799 /* RocketRAID 1720/174x have different identifiers */
800 { PCI_VDEVICE(TTI, 0x1720), chip_6042 },
Mark Lord44622542009-01-27 16:33:13 -0500801 { PCI_VDEVICE(TTI, 0x1740), chip_6042 },
802 { PCI_VDEVICE(TTI, 0x1742), chip_6042 },
Brett Russ20f733e2005-09-01 18:26:17 -0400803
Jeff Garzik2d2744f2006-09-28 20:21:59 -0400804 { PCI_VDEVICE(MARVELL, 0x6040), chip_604x },
805 { PCI_VDEVICE(MARVELL, 0x6041), chip_604x },
806 { PCI_VDEVICE(MARVELL, 0x6042), chip_6042 },
807 { PCI_VDEVICE(MARVELL, 0x6080), chip_608x },
808 { PCI_VDEVICE(MARVELL, 0x6081), chip_608x },
Jeff Garzik29179532005-11-11 08:08:03 -0500809
Jeff Garzik2d2744f2006-09-28 20:21:59 -0400810 { PCI_VDEVICE(ADAPTEC2, 0x0241), chip_604x },
811
Florian Attenbergerd9f9c6b2007-07-02 17:09:29 +0200812 /* Adaptec 1430SA */
813 { PCI_VDEVICE(ADAPTEC2, 0x0243), chip_7042 },
814
Mark Lord02a121d2007-12-01 13:07:22 -0500815 /* Marvell 7042 support */
Morrison, Tom6a3d5862007-03-06 02:38:10 -0800816 { PCI_VDEVICE(MARVELL, 0x7042), chip_7042 },
817
Mark Lord02a121d2007-12-01 13:07:22 -0500818 /* Highpoint RocketRAID PCIe series */
819 { PCI_VDEVICE(TTI, 0x2300), chip_7042 },
820 { PCI_VDEVICE(TTI, 0x2310), chip_7042 },
821
Jeff Garzik2d2744f2006-09-28 20:21:59 -0400822 { } /* terminate list */
Brett Russ20f733e2005-09-01 18:26:17 -0400823};
824
Jeff Garzik47c2b672005-11-12 21:13:17 -0500825static const struct mv_hw_ops mv5xxx_ops = {
826 .phy_errata = mv5_phy_errata,
827 .enable_leds = mv5_enable_leds,
828 .read_preamp = mv5_read_preamp,
829 .reset_hc = mv5_reset_hc,
Jeff Garzik522479f2005-11-12 22:14:02 -0500830 .reset_flash = mv5_reset_flash,
831 .reset_bus = mv5_reset_bus,
Jeff Garzik47c2b672005-11-12 21:13:17 -0500832};
833
834static const struct mv_hw_ops mv6xxx_ops = {
835 .phy_errata = mv6_phy_errata,
836 .enable_leds = mv6_enable_leds,
837 .read_preamp = mv6_read_preamp,
838 .reset_hc = mv6_reset_hc,
Jeff Garzik522479f2005-11-12 22:14:02 -0500839 .reset_flash = mv6_reset_flash,
840 .reset_bus = mv_reset_pci_bus,
Jeff Garzik47c2b672005-11-12 21:13:17 -0500841};
842
Saeed Bisharaf351b2d2008-02-01 18:08:03 -0500843static const struct mv_hw_ops mv_soc_ops = {
844 .phy_errata = mv6_phy_errata,
845 .enable_leds = mv_soc_enable_leds,
846 .read_preamp = mv_soc_read_preamp,
847 .reset_hc = mv_soc_reset_hc,
848 .reset_flash = mv_soc_reset_flash,
849 .reset_bus = mv_soc_reset_bus,
850};
851
Martin Michlmayr29b7e432009-05-04 20:58:50 +0200852static const struct mv_hw_ops mv_soc_65n_ops = {
853 .phy_errata = mv_soc_65n_phy_errata,
854 .enable_leds = mv_soc_enable_leds,
855 .reset_hc = mv_soc_reset_hc,
856 .reset_flash = mv_soc_reset_flash,
857 .reset_bus = mv_soc_reset_bus,
858};
859
Brett Russ20f733e2005-09-01 18:26:17 -0400860/*
861 * Functions
862 */
863
864static inline void writelfl(unsigned long data, void __iomem *addr)
865{
866 writel(data, addr);
867 (void) readl(addr); /* flush to avoid PCI posted write */
868}
869
Jeff Garzikc9d39132005-11-13 17:47:51 -0500870static inline unsigned int mv_hc_from_port(unsigned int port)
871{
872 return port >> MV_PORT_HC_SHIFT;
873}
874
875static inline unsigned int mv_hardport_from_port(unsigned int port)
876{
877 return port & MV_PORT_MASK;
878}
879
Mark Lord1cfd19a2008-04-19 15:05:50 -0400880/*
881 * Consolidate some rather tricky bit shift calculations.
882 * This is hot-path stuff, so not a function.
883 * Simple code, with two return values, so macro rather than inline.
884 *
885 * port is the sole input, in range 0..7.
Mark Lord7368f912008-04-25 11:24:24 -0400886 * shift is one output, for use with main_irq_cause / main_irq_mask registers.
887 * hardport is the other output, in range 0..3.
Mark Lord1cfd19a2008-04-19 15:05:50 -0400888 *
889 * Note that port and hardport may be the same variable in some cases.
890 */
891#define MV_PORT_TO_SHIFT_AND_HARDPORT(port, shift, hardport) \
892{ \
893 shift = mv_hc_from_port(port) * HC_SHIFT; \
894 hardport = mv_hardport_from_port(port); \
895 shift += hardport * 2; \
896}
897
Mark Lord352fab72008-04-19 14:43:42 -0400898static inline void __iomem *mv_hc_base(void __iomem *base, unsigned int hc)
899{
Mark Lordcae5a292009-04-06 16:43:45 -0400900 return (base + SATAHC0_REG_BASE + (hc * MV_SATAHC_REG_SZ));
Mark Lord352fab72008-04-19 14:43:42 -0400901}
902
Jeff Garzikc9d39132005-11-13 17:47:51 -0500903static inline void __iomem *mv_hc_base_from_port(void __iomem *base,
904 unsigned int port)
905{
906 return mv_hc_base(base, mv_hc_from_port(port));
907}
908
Brett Russ20f733e2005-09-01 18:26:17 -0400909static inline void __iomem *mv_port_base(void __iomem *base, unsigned int port)
910{
Jeff Garzikc9d39132005-11-13 17:47:51 -0500911 return mv_hc_base_from_port(base, port) +
Jeff Garzik8b260242005-11-12 12:32:50 -0500912 MV_SATAHC_ARBTR_REG_SZ +
Jeff Garzikc9d39132005-11-13 17:47:51 -0500913 (mv_hardport_from_port(port) * MV_PORT_REG_SZ);
Brett Russ20f733e2005-09-01 18:26:17 -0400914}
915
Mark Lorde12bef52008-03-31 19:33:56 -0400916static void __iomem *mv5_phy_base(void __iomem *mmio, unsigned int port)
917{
918 void __iomem *hc_mmio = mv_hc_base_from_port(mmio, port);
919 unsigned long ofs = (mv_hardport_from_port(port) + 1) * 0x100UL;
920
921 return hc_mmio + ofs;
922}
923
Saeed Bisharaf351b2d2008-02-01 18:08:03 -0500924static inline void __iomem *mv_host_base(struct ata_host *host)
925{
926 struct mv_host_priv *hpriv = host->private_data;
927 return hpriv->base;
928}
929
Brett Russ20f733e2005-09-01 18:26:17 -0400930static inline void __iomem *mv_ap_base(struct ata_port *ap)
931{
Saeed Bisharaf351b2d2008-02-01 18:08:03 -0500932 return mv_port_base(mv_host_base(ap->host), ap->port_no);
Brett Russ20f733e2005-09-01 18:26:17 -0400933}
934
Jeff Garzikcca39742006-08-24 03:19:22 -0400935static inline int mv_get_hc_count(unsigned long port_flags)
Brett Russ20f733e2005-09-01 18:26:17 -0400936{
Jeff Garzikcca39742006-08-24 03:19:22 -0400937 return ((port_flags & MV_FLAG_DUAL_HC) ? 2 : 1);
Brett Russ20f733e2005-09-01 18:26:17 -0400938}
939
Mark Lord08da1752009-02-25 15:13:03 -0500940/**
941 * mv_save_cached_regs - (re-)initialize cached port registers
942 * @ap: the port whose registers we are caching
943 *
944 * Initialize the local cache of port registers,
945 * so that reading them over and over again can
946 * be avoided on the hotter paths of this driver.
947 * This saves a few microseconds each time we switch
948 * to/from EDMA mode to perform (eg.) a drive cache flush.
949 */
950static void mv_save_cached_regs(struct ata_port *ap)
951{
952 void __iomem *port_mmio = mv_ap_base(ap);
953 struct mv_port_priv *pp = ap->private_data;
954
Mark Lordcae5a292009-04-06 16:43:45 -0400955 pp->cached.fiscfg = readl(port_mmio + FISCFG);
956 pp->cached.ltmode = readl(port_mmio + LTMODE);
957 pp->cached.haltcond = readl(port_mmio + EDMA_HALTCOND);
958 pp->cached.unknown_rsvd = readl(port_mmio + EDMA_UNKNOWN_RSVD);
Mark Lord08da1752009-02-25 15:13:03 -0500959}
960
961/**
962 * mv_write_cached_reg - write to a cached port register
963 * @addr: hardware address of the register
964 * @old: pointer to cached value of the register
965 * @new: new value for the register
966 *
967 * Write a new value to a cached register,
968 * but only if the value is different from before.
969 */
970static inline void mv_write_cached_reg(void __iomem *addr, u32 *old, u32 new)
971{
972 if (new != *old) {
Mark Lord12f3b6d2009-04-06 15:26:24 -0400973 unsigned long laddr;
Mark Lord08da1752009-02-25 15:13:03 -0500974 *old = new;
Mark Lord12f3b6d2009-04-06 15:26:24 -0400975 /*
976 * Workaround for 88SX60x1-B2 FEr SATA#13:
977 * Read-after-write is needed to prevent generating 64-bit
978 * write cycles on the PCI bus for SATA interface registers
979 * at offsets ending in 0x4 or 0xc.
980 *
981 * Looks like a lot of fuss, but it avoids an unnecessary
982 * +1 usec read-after-write delay for unaffected registers.
983 */
984 laddr = (long)addr & 0xffff;
985 if (laddr >= 0x300 && laddr <= 0x33c) {
986 laddr &= 0x000f;
987 if (laddr == 0x4 || laddr == 0xc) {
988 writelfl(new, addr); /* read after write */
989 return;
990 }
991 }
992 writel(new, addr); /* unaffected by the errata */
Mark Lord08da1752009-02-25 15:13:03 -0500993 }
994}
995
Jeff Garzikc5d3e452007-07-11 18:30:50 -0400996static void mv_set_edma_ptrs(void __iomem *port_mmio,
997 struct mv_host_priv *hpriv,
998 struct mv_port_priv *pp)
999{
Jeff Garzikbdd4ddd2007-07-12 14:34:26 -04001000 u32 index;
1001
Jeff Garzikc5d3e452007-07-11 18:30:50 -04001002 /*
1003 * initialize request queue
1004 */
Mark Lordfcfb1f72008-04-19 15:06:40 -04001005 pp->req_idx &= MV_MAX_Q_DEPTH_MASK; /* paranoia */
1006 index = pp->req_idx << EDMA_REQ_Q_PTR_SHIFT;
Jeff Garzikbdd4ddd2007-07-12 14:34:26 -04001007
Jeff Garzikc5d3e452007-07-11 18:30:50 -04001008 WARN_ON(pp->crqb_dma & 0x3ff);
Mark Lordcae5a292009-04-06 16:43:45 -04001009 writel((pp->crqb_dma >> 16) >> 16, port_mmio + EDMA_REQ_Q_BASE_HI);
Jeff Garzikbdd4ddd2007-07-12 14:34:26 -04001010 writelfl((pp->crqb_dma & EDMA_REQ_Q_BASE_LO_MASK) | index,
Mark Lordcae5a292009-04-06 16:43:45 -04001011 port_mmio + EDMA_REQ_Q_IN_PTR);
1012 writelfl(index, port_mmio + EDMA_REQ_Q_OUT_PTR);
Jeff Garzikc5d3e452007-07-11 18:30:50 -04001013
1014 /*
1015 * initialize response queue
1016 */
Mark Lordfcfb1f72008-04-19 15:06:40 -04001017 pp->resp_idx &= MV_MAX_Q_DEPTH_MASK; /* paranoia */
1018 index = pp->resp_idx << EDMA_RSP_Q_PTR_SHIFT;
Jeff Garzikbdd4ddd2007-07-12 14:34:26 -04001019
Jeff Garzikc5d3e452007-07-11 18:30:50 -04001020 WARN_ON(pp->crpb_dma & 0xff);
Mark Lordcae5a292009-04-06 16:43:45 -04001021 writel((pp->crpb_dma >> 16) >> 16, port_mmio + EDMA_RSP_Q_BASE_HI);
1022 writelfl(index, port_mmio + EDMA_RSP_Q_IN_PTR);
Jeff Garzikbdd4ddd2007-07-12 14:34:26 -04001023 writelfl((pp->crpb_dma & EDMA_RSP_Q_BASE_LO_MASK) | index,
Mark Lordcae5a292009-04-06 16:43:45 -04001024 port_mmio + EDMA_RSP_Q_OUT_PTR);
Jeff Garzikc5d3e452007-07-11 18:30:50 -04001025}
1026
Mark Lord2b748a02009-03-10 22:01:17 -04001027static void mv_write_main_irq_mask(u32 mask, struct mv_host_priv *hpriv)
1028{
1029 /*
1030 * When writing to the main_irq_mask in hardware,
1031 * we must ensure exclusivity between the interrupt coalescing bits
1032 * and the corresponding individual port DONE_IRQ bits.
1033 *
1034 * Note that this register is really an "IRQ enable" register,
1035 * not an "IRQ mask" register as Marvell's naming might suggest.
1036 */
1037 if (mask & (ALL_PORTS_COAL_DONE | PORTS_0_3_COAL_DONE))
1038 mask &= ~DONE_IRQ_0_3;
1039 if (mask & (ALL_PORTS_COAL_DONE | PORTS_4_7_COAL_DONE))
1040 mask &= ~DONE_IRQ_4_7;
1041 writelfl(mask, hpriv->main_irq_mask_addr);
1042}
1043
Mark Lordc4de5732008-05-17 13:35:21 -04001044static void mv_set_main_irq_mask(struct ata_host *host,
1045 u32 disable_bits, u32 enable_bits)
1046{
1047 struct mv_host_priv *hpriv = host->private_data;
1048 u32 old_mask, new_mask;
1049
Mark Lord96e2c4872008-05-17 13:38:00 -04001050 old_mask = hpriv->main_irq_mask;
Mark Lordc4de5732008-05-17 13:35:21 -04001051 new_mask = (old_mask & ~disable_bits) | enable_bits;
Mark Lord96e2c4872008-05-17 13:38:00 -04001052 if (new_mask != old_mask) {
1053 hpriv->main_irq_mask = new_mask;
Mark Lord2b748a02009-03-10 22:01:17 -04001054 mv_write_main_irq_mask(new_mask, hpriv);
Mark Lord96e2c4872008-05-17 13:38:00 -04001055 }
Mark Lordc4de5732008-05-17 13:35:21 -04001056}
1057
1058static void mv_enable_port_irqs(struct ata_port *ap,
1059 unsigned int port_bits)
1060{
1061 unsigned int shift, hardport, port = ap->port_no;
1062 u32 disable_bits, enable_bits;
1063
1064 MV_PORT_TO_SHIFT_AND_HARDPORT(port, shift, hardport);
1065
1066 disable_bits = (DONE_IRQ | ERR_IRQ) << shift;
1067 enable_bits = port_bits << shift;
1068 mv_set_main_irq_mask(ap->host, disable_bits, enable_bits);
1069}
1070
Mark Lord00b81232009-01-30 18:47:51 -05001071static void mv_clear_and_enable_port_irqs(struct ata_port *ap,
1072 void __iomem *port_mmio,
1073 unsigned int port_irqs)
1074{
1075 struct mv_host_priv *hpriv = ap->host->private_data;
1076 int hardport = mv_hardport_from_port(ap->port_no);
1077 void __iomem *hc_mmio = mv_hc_base_from_port(
1078 mv_host_base(ap->host), ap->port_no);
1079 u32 hc_irq_cause;
1080
1081 /* clear EDMA event indicators, if any */
Mark Lordcae5a292009-04-06 16:43:45 -04001082 writelfl(0, port_mmio + EDMA_ERR_IRQ_CAUSE);
Mark Lord00b81232009-01-30 18:47:51 -05001083
1084 /* clear pending irq events */
1085 hc_irq_cause = ~((DEV_IRQ | DMA_IRQ) << hardport);
Mark Lordcae5a292009-04-06 16:43:45 -04001086 writelfl(hc_irq_cause, hc_mmio + HC_IRQ_CAUSE);
Mark Lord00b81232009-01-30 18:47:51 -05001087
1088 /* clear FIS IRQ Cause */
1089 if (IS_GEN_IIE(hpriv))
Mark Lordcae5a292009-04-06 16:43:45 -04001090 writelfl(0, port_mmio + FIS_IRQ_CAUSE);
Mark Lord00b81232009-01-30 18:47:51 -05001091
1092 mv_enable_port_irqs(ap, port_irqs);
1093}
1094
Mark Lord2b748a02009-03-10 22:01:17 -04001095static void mv_set_irq_coalescing(struct ata_host *host,
1096 unsigned int count, unsigned int usecs)
1097{
1098 struct mv_host_priv *hpriv = host->private_data;
1099 void __iomem *mmio = hpriv->base, *hc_mmio;
1100 u32 coal_enable = 0;
1101 unsigned long flags;
Mark Lord6abf4672009-03-11 00:56:00 -04001102 unsigned int clks, is_dual_hc = hpriv->n_ports > MV_PORTS_PER_HC;
Mark Lord2b748a02009-03-10 22:01:17 -04001103 const u32 coal_disable = PORTS_0_3_COAL_DONE | PORTS_4_7_COAL_DONE |
1104 ALL_PORTS_COAL_DONE;
1105
1106 /* Disable IRQ coalescing if either threshold is zero */
1107 if (!usecs || !count) {
1108 clks = count = 0;
1109 } else {
1110 /* Respect maximum limits of the hardware */
1111 clks = usecs * COAL_CLOCKS_PER_USEC;
1112 if (clks > MAX_COAL_TIME_THRESHOLD)
1113 clks = MAX_COAL_TIME_THRESHOLD;
1114 if (count > MAX_COAL_IO_COUNT)
1115 count = MAX_COAL_IO_COUNT;
1116 }
1117
1118 spin_lock_irqsave(&host->lock, flags);
Mark Lord6abf4672009-03-11 00:56:00 -04001119 mv_set_main_irq_mask(host, coal_disable, 0);
Mark Lord2b748a02009-03-10 22:01:17 -04001120
Mark Lord6abf4672009-03-11 00:56:00 -04001121 if (is_dual_hc && !IS_GEN_I(hpriv)) {
Mark Lord2b748a02009-03-10 22:01:17 -04001122 /*
Mark Lord6abf4672009-03-11 00:56:00 -04001123 * GEN_II/GEN_IIE with dual host controllers:
1124 * one set of global thresholds for the entire chip.
Mark Lord2b748a02009-03-10 22:01:17 -04001125 */
Mark Lordcae5a292009-04-06 16:43:45 -04001126 writel(clks, mmio + IRQ_COAL_TIME_THRESHOLD);
1127 writel(count, mmio + IRQ_COAL_IO_THRESHOLD);
Mark Lord2b748a02009-03-10 22:01:17 -04001128 /* clear leftover coal IRQ bit */
Mark Lordcae5a292009-04-06 16:43:45 -04001129 writel(~ALL_PORTS_COAL_IRQ, mmio + IRQ_COAL_CAUSE);
Mark Lord6abf4672009-03-11 00:56:00 -04001130 if (count)
1131 coal_enable = ALL_PORTS_COAL_DONE;
1132 clks = count = 0; /* force clearing of regular regs below */
Mark Lord2b748a02009-03-10 22:01:17 -04001133 }
Mark Lord6abf4672009-03-11 00:56:00 -04001134
Mark Lord2b748a02009-03-10 22:01:17 -04001135 /*
1136 * All chips: independent thresholds for each HC on the chip.
1137 */
1138 hc_mmio = mv_hc_base_from_port(mmio, 0);
Mark Lordcae5a292009-04-06 16:43:45 -04001139 writel(clks, hc_mmio + HC_IRQ_COAL_TIME_THRESHOLD);
1140 writel(count, hc_mmio + HC_IRQ_COAL_IO_THRESHOLD);
1141 writel(~HC_COAL_IRQ, hc_mmio + HC_IRQ_CAUSE);
Mark Lord6abf4672009-03-11 00:56:00 -04001142 if (count)
1143 coal_enable |= PORTS_0_3_COAL_DONE;
1144 if (is_dual_hc) {
Mark Lord2b748a02009-03-10 22:01:17 -04001145 hc_mmio = mv_hc_base_from_port(mmio, MV_PORTS_PER_HC);
Mark Lordcae5a292009-04-06 16:43:45 -04001146 writel(clks, hc_mmio + HC_IRQ_COAL_TIME_THRESHOLD);
1147 writel(count, hc_mmio + HC_IRQ_COAL_IO_THRESHOLD);
1148 writel(~HC_COAL_IRQ, hc_mmio + HC_IRQ_CAUSE);
Mark Lord6abf4672009-03-11 00:56:00 -04001149 if (count)
1150 coal_enable |= PORTS_4_7_COAL_DONE;
Mark Lord2b748a02009-03-10 22:01:17 -04001151 }
Mark Lord2b748a02009-03-10 22:01:17 -04001152
Mark Lord6abf4672009-03-11 00:56:00 -04001153 mv_set_main_irq_mask(host, 0, coal_enable);
Mark Lord2b748a02009-03-10 22:01:17 -04001154 spin_unlock_irqrestore(&host->lock, flags);
1155}
1156
Brett Russ05b308e2005-10-05 17:08:53 -04001157/**
Mark Lord00b81232009-01-30 18:47:51 -05001158 * mv_start_edma - Enable eDMA engine
Brett Russ05b308e2005-10-05 17:08:53 -04001159 * @base: port base address
1160 * @pp: port private data
1161 *
Tejun Heobeec7db2006-02-11 19:11:13 +09001162 * Verify the local cache of the eDMA state is accurate with a
1163 * WARN_ON.
Brett Russ05b308e2005-10-05 17:08:53 -04001164 *
1165 * LOCKING:
1166 * Inherited from caller.
1167 */
Mark Lord00b81232009-01-30 18:47:51 -05001168static void mv_start_edma(struct ata_port *ap, void __iomem *port_mmio,
Mark Lord72109162008-01-26 18:31:33 -05001169 struct mv_port_priv *pp, u8 protocol)
Brett Russ31961942005-09-30 01:36:00 -04001170{
Mark Lord72109162008-01-26 18:31:33 -05001171 int want_ncq = (protocol == ATA_PROT_NCQ);
1172
1173 if (pp->pp_flags & MV_PP_FLAG_EDMA_EN) {
1174 int using_ncq = ((pp->pp_flags & MV_PP_FLAG_NCQ_EN) != 0);
1175 if (want_ncq != using_ncq)
Mark Lordb5624682008-03-31 19:34:40 -04001176 mv_stop_edma(ap);
Mark Lord72109162008-01-26 18:31:33 -05001177 }
Jeff Garzikc5d3e452007-07-11 18:30:50 -04001178 if (!(pp->pp_flags & MV_PP_FLAG_EDMA_EN)) {
Mark Lord0c589122008-01-26 18:31:16 -05001179 struct mv_host_priv *hpriv = ap->host->private_data;
Mark Lord0c589122008-01-26 18:31:16 -05001180
Mark Lord00b81232009-01-30 18:47:51 -05001181 mv_edma_cfg(ap, want_ncq, 1);
Mark Lord0c589122008-01-26 18:31:16 -05001182
Mark Lordf630d562008-01-26 18:31:00 -05001183 mv_set_edma_ptrs(port_mmio, hpriv, pp);
Mark Lord00b81232009-01-30 18:47:51 -05001184 mv_clear_and_enable_port_irqs(ap, port_mmio, DONE_IRQ|ERR_IRQ);
Jeff Garzikbdd4ddd2007-07-12 14:34:26 -04001185
Mark Lordcae5a292009-04-06 16:43:45 -04001186 writelfl(EDMA_EN, port_mmio + EDMA_CMD);
Brett Russafb0edd2005-10-05 17:08:42 -04001187 pp->pp_flags |= MV_PP_FLAG_EDMA_EN;
1188 }
Brett Russ31961942005-09-30 01:36:00 -04001189}
1190
Mark Lord9b2c4e02008-05-02 02:09:14 -04001191static void mv_wait_for_edma_empty_idle(struct ata_port *ap)
1192{
1193 void __iomem *port_mmio = mv_ap_base(ap);
1194 const u32 empty_idle = (EDMA_STATUS_CACHE_EMPTY | EDMA_STATUS_IDLE);
1195 const int per_loop = 5, timeout = (15 * 1000 / per_loop);
1196 int i;
1197
1198 /*
1199 * Wait for the EDMA engine to finish transactions in progress.
Mark Lordc46938c2008-05-02 14:02:28 -04001200 * No idea what a good "timeout" value might be, but measurements
1201 * indicate that it often requires hundreds of microseconds
1202 * with two drives in-use. So we use the 15msec value above
1203 * as a rough guess at what even more drives might require.
Mark Lord9b2c4e02008-05-02 02:09:14 -04001204 */
1205 for (i = 0; i < timeout; ++i) {
Mark Lordcae5a292009-04-06 16:43:45 -04001206 u32 edma_stat = readl(port_mmio + EDMA_STATUS);
Mark Lord9b2c4e02008-05-02 02:09:14 -04001207 if ((edma_stat & empty_idle) == empty_idle)
1208 break;
1209 udelay(per_loop);
1210 }
Joe Perchesa9a79df2011-04-15 15:51:59 -07001211 /* ata_port_info(ap, "%s: %u+ usecs\n", __func__, i); */
Mark Lord9b2c4e02008-05-02 02:09:14 -04001212}
1213
Brett Russ05b308e2005-10-05 17:08:53 -04001214/**
Mark Lorde12bef52008-03-31 19:33:56 -04001215 * mv_stop_edma_engine - Disable eDMA engine
Mark Lordb5624682008-03-31 19:34:40 -04001216 * @port_mmio: io base address
Brett Russ05b308e2005-10-05 17:08:53 -04001217 *
1218 * LOCKING:
1219 * Inherited from caller.
1220 */
Mark Lordb5624682008-03-31 19:34:40 -04001221static int mv_stop_edma_engine(void __iomem *port_mmio)
Brett Russ31961942005-09-30 01:36:00 -04001222{
Mark Lordb5624682008-03-31 19:34:40 -04001223 int i;
Brett Russ31961942005-09-30 01:36:00 -04001224
Mark Lordb5624682008-03-31 19:34:40 -04001225 /* Disable eDMA. The disable bit auto clears. */
Mark Lordcae5a292009-04-06 16:43:45 -04001226 writelfl(EDMA_DS, port_mmio + EDMA_CMD);
Jeff Garzik8b260242005-11-12 12:32:50 -05001227
Mark Lordb5624682008-03-31 19:34:40 -04001228 /* Wait for the chip to confirm eDMA is off. */
1229 for (i = 10000; i > 0; i--) {
Mark Lordcae5a292009-04-06 16:43:45 -04001230 u32 reg = readl(port_mmio + EDMA_CMD);
Jeff Garzik4537deb2007-07-12 14:30:19 -04001231 if (!(reg & EDMA_EN))
Mark Lordb5624682008-03-31 19:34:40 -04001232 return 0;
1233 udelay(10);
Brett Russ31961942005-09-30 01:36:00 -04001234 }
Mark Lordb5624682008-03-31 19:34:40 -04001235 return -EIO;
Brett Russ31961942005-09-30 01:36:00 -04001236}
1237
Mark Lorde12bef52008-03-31 19:33:56 -04001238static int mv_stop_edma(struct ata_port *ap)
Jeff Garzik0ea9e172007-07-13 17:06:45 -04001239{
Mark Lordb5624682008-03-31 19:34:40 -04001240 void __iomem *port_mmio = mv_ap_base(ap);
1241 struct mv_port_priv *pp = ap->private_data;
Mark Lord66e57a22009-01-30 18:52:58 -05001242 int err = 0;
Jeff Garzik0ea9e172007-07-13 17:06:45 -04001243
Mark Lordb5624682008-03-31 19:34:40 -04001244 if (!(pp->pp_flags & MV_PP_FLAG_EDMA_EN))
1245 return 0;
1246 pp->pp_flags &= ~MV_PP_FLAG_EDMA_EN;
Mark Lord9b2c4e02008-05-02 02:09:14 -04001247 mv_wait_for_edma_empty_idle(ap);
Mark Lordb5624682008-03-31 19:34:40 -04001248 if (mv_stop_edma_engine(port_mmio)) {
Joe Perchesa9a79df2011-04-15 15:51:59 -07001249 ata_port_err(ap, "Unable to stop eDMA\n");
Mark Lord66e57a22009-01-30 18:52:58 -05001250 err = -EIO;
Mark Lordb5624682008-03-31 19:34:40 -04001251 }
Mark Lord66e57a22009-01-30 18:52:58 -05001252 mv_edma_cfg(ap, 0, 0);
1253 return err;
Jeff Garzik0ea9e172007-07-13 17:06:45 -04001254}
1255
Jeff Garzik8a70f8d2005-10-05 17:19:47 -04001256#ifdef ATA_DEBUG
Brett Russ31961942005-09-30 01:36:00 -04001257static void mv_dump_mem(void __iomem *start, unsigned bytes)
1258{
Brett Russ31961942005-09-30 01:36:00 -04001259 int b, w;
1260 for (b = 0; b < bytes; ) {
1261 DPRINTK("%p: ", start + b);
1262 for (w = 0; b < bytes && w < 4; w++) {
Jeff Garzik2dcb4072007-10-19 06:42:56 -04001263 printk("%08x ", readl(start + b));
Brett Russ31961942005-09-30 01:36:00 -04001264 b += sizeof(u32);
1265 }
1266 printk("\n");
1267 }
Brett Russ31961942005-09-30 01:36:00 -04001268}
Jeff Garzik8a70f8d2005-10-05 17:19:47 -04001269#endif
Andrew Lunn13b74082012-09-28 17:04:10 +02001270#if defined(ATA_DEBUG) || defined(CONFIG_PCI)
Brett Russ31961942005-09-30 01:36:00 -04001271static void mv_dump_pci_cfg(struct pci_dev *pdev, unsigned bytes)
1272{
1273#ifdef ATA_DEBUG
1274 int b, w;
1275 u32 dw;
1276 for (b = 0; b < bytes; ) {
1277 DPRINTK("%02x: ", b);
1278 for (w = 0; b < bytes && w < 4; w++) {
Jeff Garzik2dcb4072007-10-19 06:42:56 -04001279 (void) pci_read_config_dword(pdev, b, &dw);
1280 printk("%08x ", dw);
Brett Russ31961942005-09-30 01:36:00 -04001281 b += sizeof(u32);
1282 }
1283 printk("\n");
1284 }
1285#endif
1286}
Andrew Lunn13b74082012-09-28 17:04:10 +02001287#endif
Brett Russ31961942005-09-30 01:36:00 -04001288static void mv_dump_all_regs(void __iomem *mmio_base, int port,
1289 struct pci_dev *pdev)
1290{
1291#ifdef ATA_DEBUG
Jeff Garzik8b260242005-11-12 12:32:50 -05001292 void __iomem *hc_base = mv_hc_base(mmio_base,
Brett Russ31961942005-09-30 01:36:00 -04001293 port >> MV_PORT_HC_SHIFT);
1294 void __iomem *port_base;
1295 int start_port, num_ports, p, start_hc, num_hcs, hc;
1296
1297 if (0 > port) {
1298 start_hc = start_port = 0;
1299 num_ports = 8; /* shld be benign for 4 port devs */
1300 num_hcs = 2;
1301 } else {
1302 start_hc = port >> MV_PORT_HC_SHIFT;
1303 start_port = port;
1304 num_ports = num_hcs = 1;
1305 }
Jeff Garzik8b260242005-11-12 12:32:50 -05001306 DPRINTK("All registers for port(s) %u-%u:\n", start_port,
Brett Russ31961942005-09-30 01:36:00 -04001307 num_ports > 1 ? num_ports - 1 : start_port);
1308
1309 if (NULL != pdev) {
1310 DPRINTK("PCI config space regs:\n");
1311 mv_dump_pci_cfg(pdev, 0x68);
1312 }
1313 DPRINTK("PCI regs:\n");
1314 mv_dump_mem(mmio_base+0xc00, 0x3c);
1315 mv_dump_mem(mmio_base+0xd00, 0x34);
1316 mv_dump_mem(mmio_base+0xf00, 0x4);
1317 mv_dump_mem(mmio_base+0x1d00, 0x6c);
1318 for (hc = start_hc; hc < start_hc + num_hcs; hc++) {
Dan Alonid220c372006-04-10 23:20:22 -07001319 hc_base = mv_hc_base(mmio_base, hc);
Brett Russ31961942005-09-30 01:36:00 -04001320 DPRINTK("HC regs (HC %i):\n", hc);
1321 mv_dump_mem(hc_base, 0x1c);
1322 }
1323 for (p = start_port; p < start_port + num_ports; p++) {
1324 port_base = mv_port_base(mmio_base, p);
Jeff Garzik2dcb4072007-10-19 06:42:56 -04001325 DPRINTK("EDMA regs (port %i):\n", p);
Brett Russ31961942005-09-30 01:36:00 -04001326 mv_dump_mem(port_base, 0x54);
Jeff Garzik2dcb4072007-10-19 06:42:56 -04001327 DPRINTK("SATA regs (port %i):\n", p);
Brett Russ31961942005-09-30 01:36:00 -04001328 mv_dump_mem(port_base+0x300, 0x60);
1329 }
1330#endif
1331}
1332
Brett Russ20f733e2005-09-01 18:26:17 -04001333static unsigned int mv_scr_offset(unsigned int sc_reg_in)
1334{
1335 unsigned int ofs;
1336
1337 switch (sc_reg_in) {
1338 case SCR_STATUS:
1339 case SCR_CONTROL:
1340 case SCR_ERROR:
Mark Lordcae5a292009-04-06 16:43:45 -04001341 ofs = SATA_STATUS + (sc_reg_in * sizeof(u32));
Brett Russ20f733e2005-09-01 18:26:17 -04001342 break;
1343 case SCR_ACTIVE:
Mark Lordcae5a292009-04-06 16:43:45 -04001344 ofs = SATA_ACTIVE; /* active is not with the others */
Brett Russ20f733e2005-09-01 18:26:17 -04001345 break;
1346 default:
1347 ofs = 0xffffffffU;
1348 break;
1349 }
1350 return ofs;
1351}
1352
Tejun Heo82ef04f2008-07-31 17:02:40 +09001353static int mv_scr_read(struct ata_link *link, unsigned int sc_reg_in, u32 *val)
Brett Russ20f733e2005-09-01 18:26:17 -04001354{
1355 unsigned int ofs = mv_scr_offset(sc_reg_in);
1356
Tejun Heoda3dbb12007-07-16 14:29:40 +09001357 if (ofs != 0xffffffffU) {
Tejun Heo82ef04f2008-07-31 17:02:40 +09001358 *val = readl(mv_ap_base(link->ap) + ofs);
Tejun Heoda3dbb12007-07-16 14:29:40 +09001359 return 0;
1360 } else
1361 return -EINVAL;
Brett Russ20f733e2005-09-01 18:26:17 -04001362}
1363
Tejun Heo82ef04f2008-07-31 17:02:40 +09001364static int mv_scr_write(struct ata_link *link, unsigned int sc_reg_in, u32 val)
Brett Russ20f733e2005-09-01 18:26:17 -04001365{
1366 unsigned int ofs = mv_scr_offset(sc_reg_in);
1367
Tejun Heoda3dbb12007-07-16 14:29:40 +09001368 if (ofs != 0xffffffffU) {
Mark Lord20091772009-04-06 15:24:57 -04001369 void __iomem *addr = mv_ap_base(link->ap) + ofs;
Lior Amsalem9013d642014-01-14 20:09:57 +01001370 struct mv_host_priv *hpriv = link->ap->host->private_data;
Mark Lord20091772009-04-06 15:24:57 -04001371 if (sc_reg_in == SCR_CONTROL) {
1372 /*
1373 * Workaround for 88SX60x1 FEr SATA#26:
1374 *
Lucas De Marchi25985ed2011-03-30 22:57:33 -03001375 * COMRESETs have to take care not to accidentally
Mark Lord20091772009-04-06 15:24:57 -04001376 * put the drive to sleep when writing SCR_CONTROL.
1377 * Setting bits 12..15 prevents this problem.
1378 *
1379 * So if we see an outbound COMMRESET, set those bits.
1380 * Ditto for the followup write that clears the reset.
1381 *
1382 * The proprietary driver does this for
1383 * all chip versions, and so do we.
1384 */
1385 if ((val & 0xf) == 1 || (readl(addr) & 0xf) == 1)
1386 val |= 0xf000;
Lior Amsalem9013d642014-01-14 20:09:57 +01001387
1388 if (hpriv->hp_flags & MV_HP_FIX_LP_PHY_CTL) {
1389 void __iomem *lp_phy_addr =
1390 mv_ap_base(link->ap) + LP_PHY_CTL;
1391 /*
1392 * Set PHY speed according to SControl speed.
1393 */
1394 if ((val & 0xf0) == 0x10)
1395 writelfl(0x7, lp_phy_addr);
1396 else
1397 writelfl(0x227, lp_phy_addr);
1398 }
Mark Lord20091772009-04-06 15:24:57 -04001399 }
1400 writelfl(val, addr);
Tejun Heoda3dbb12007-07-16 14:29:40 +09001401 return 0;
1402 } else
1403 return -EINVAL;
Brett Russ20f733e2005-09-01 18:26:17 -04001404}
1405
Mark Lordf2738272008-01-26 18:32:29 -05001406static void mv6_dev_config(struct ata_device *adev)
1407{
1408 /*
Mark Lorde49856d2008-04-16 14:59:07 -04001409 * Deal with Gen-II ("mv6") hardware quirks/restrictions:
1410 *
1411 * Gen-II does not support NCQ over a port multiplier
1412 * (no FIS-based switching).
Mark Lordf2738272008-01-26 18:32:29 -05001413 */
Mark Lorde49856d2008-04-16 14:59:07 -04001414 if (adev->flags & ATA_DFLAG_NCQ) {
Mark Lord352fab72008-04-19 14:43:42 -04001415 if (sata_pmp_attached(adev->link->ap)) {
Mark Lorde49856d2008-04-16 14:59:07 -04001416 adev->flags &= ~ATA_DFLAG_NCQ;
Joe Perchesa9a79df2011-04-15 15:51:59 -07001417 ata_dev_info(adev,
Mark Lord352fab72008-04-19 14:43:42 -04001418 "NCQ disabled for command-based switching\n");
Mark Lord352fab72008-04-19 14:43:42 -04001419 }
Mark Lorde49856d2008-04-16 14:59:07 -04001420 }
Mark Lordf2738272008-01-26 18:32:29 -05001421}
1422
Mark Lord3e4a1392008-05-02 02:10:02 -04001423static int mv_qc_defer(struct ata_queued_cmd *qc)
1424{
1425 struct ata_link *link = qc->dev->link;
1426 struct ata_port *ap = link->ap;
1427 struct mv_port_priv *pp = ap->private_data;
1428
1429 /*
Mark Lord29d187b2008-05-02 02:15:37 -04001430 * Don't allow new commands if we're in a delayed EH state
1431 * for NCQ and/or FIS-based switching.
1432 */
1433 if (pp->pp_flags & MV_PP_FLAG_DELAYED_EH)
1434 return ATA_DEFER_PORT;
Gwendal Grignou159a7ff2009-10-12 15:44:00 -07001435
1436 /* PIO commands need exclusive link: no other commands [DMA or PIO]
1437 * can run concurrently.
1438 * set excl_link when we want to send a PIO command in DMA mode
1439 * or a non-NCQ command in NCQ mode.
1440 * When we receive a command from that link, and there are no
1441 * outstanding commands, mark a flag to clear excl_link and let
1442 * the command go through.
1443 */
1444 if (unlikely(ap->excl_link)) {
1445 if (link == ap->excl_link) {
1446 if (ap->nr_active_links)
1447 return ATA_DEFER_PORT;
1448 qc->flags |= ATA_QCFLAG_CLEAR_EXCL;
1449 return 0;
1450 } else
1451 return ATA_DEFER_PORT;
1452 }
1453
Mark Lord29d187b2008-05-02 02:15:37 -04001454 /*
Mark Lord3e4a1392008-05-02 02:10:02 -04001455 * If the port is completely idle, then allow the new qc.
1456 */
1457 if (ap->nr_active_links == 0)
1458 return 0;
1459
Tejun Heo4bdee6c2008-08-13 20:24:16 +09001460 /*
1461 * The port is operating in host queuing mode (EDMA) with NCQ
1462 * enabled, allow multiple NCQ commands. EDMA also allows
1463 * queueing multiple DMA commands but libata core currently
1464 * doesn't allow it.
1465 */
1466 if ((pp->pp_flags & MV_PP_FLAG_EDMA_EN) &&
Gwendal Grignou159a7ff2009-10-12 15:44:00 -07001467 (pp->pp_flags & MV_PP_FLAG_NCQ_EN)) {
1468 if (ata_is_ncq(qc->tf.protocol))
1469 return 0;
1470 else {
1471 ap->excl_link = link;
1472 return ATA_DEFER_PORT;
1473 }
1474 }
Tejun Heo4bdee6c2008-08-13 20:24:16 +09001475
Mark Lord3e4a1392008-05-02 02:10:02 -04001476 return ATA_DEFER_PORT;
1477}
1478
Mark Lord08da1752009-02-25 15:13:03 -05001479static void mv_config_fbs(struct ata_port *ap, int want_ncq, int want_fbs)
Mark Lorde49856d2008-04-16 14:59:07 -04001480{
Mark Lord08da1752009-02-25 15:13:03 -05001481 struct mv_port_priv *pp = ap->private_data;
1482 void __iomem *port_mmio;
Mark Lord00f42ea2008-05-02 02:11:45 -04001483
Mark Lord08da1752009-02-25 15:13:03 -05001484 u32 fiscfg, *old_fiscfg = &pp->cached.fiscfg;
1485 u32 ltmode, *old_ltmode = &pp->cached.ltmode;
1486 u32 haltcond, *old_haltcond = &pp->cached.haltcond;
Mark Lord00f42ea2008-05-02 02:11:45 -04001487
Mark Lord08da1752009-02-25 15:13:03 -05001488 ltmode = *old_ltmode & ~LTMODE_BIT8;
1489 haltcond = *old_haltcond | EDMA_ERR_DEV;
Mark Lord00f42ea2008-05-02 02:11:45 -04001490
1491 if (want_fbs) {
Mark Lord08da1752009-02-25 15:13:03 -05001492 fiscfg = *old_fiscfg | FISCFG_SINGLE_SYNC;
1493 ltmode = *old_ltmode | LTMODE_BIT8;
Mark Lord4c299ca2008-05-02 02:16:20 -04001494 if (want_ncq)
Mark Lord08da1752009-02-25 15:13:03 -05001495 haltcond &= ~EDMA_ERR_DEV;
Mark Lord4c299ca2008-05-02 02:16:20 -04001496 else
Mark Lord08da1752009-02-25 15:13:03 -05001497 fiscfg |= FISCFG_WAIT_DEV_ERR;
1498 } else {
1499 fiscfg = *old_fiscfg & ~(FISCFG_SINGLE_SYNC | FISCFG_WAIT_DEV_ERR);
Mark Lorde49856d2008-04-16 14:59:07 -04001500 }
Mark Lord00f42ea2008-05-02 02:11:45 -04001501
Mark Lord08da1752009-02-25 15:13:03 -05001502 port_mmio = mv_ap_base(ap);
Mark Lordcae5a292009-04-06 16:43:45 -04001503 mv_write_cached_reg(port_mmio + FISCFG, old_fiscfg, fiscfg);
1504 mv_write_cached_reg(port_mmio + LTMODE, old_ltmode, ltmode);
1505 mv_write_cached_reg(port_mmio + EDMA_HALTCOND, old_haltcond, haltcond);
Mark Lord0c589122008-01-26 18:31:16 -05001506}
Jeff Garzike4e7b892006-01-31 12:18:41 -05001507
Mark Lorddd2890f2008-05-02 02:10:56 -04001508static void mv_60x1_errata_sata25(struct ata_port *ap, int want_ncq)
1509{
1510 struct mv_host_priv *hpriv = ap->host->private_data;
1511 u32 old, new;
1512
1513 /* workaround for 88SX60x1 FEr SATA#25 (part 1) */
Mark Lordcae5a292009-04-06 16:43:45 -04001514 old = readl(hpriv->base + GPIO_PORT_CTL);
Mark Lorddd2890f2008-05-02 02:10:56 -04001515 if (want_ncq)
1516 new = old | (1 << 22);
1517 else
1518 new = old & ~(1 << 22);
1519 if (new != old)
Mark Lordcae5a292009-04-06 16:43:45 -04001520 writel(new, hpriv->base + GPIO_PORT_CTL);
Mark Lorddd2890f2008-05-02 02:10:56 -04001521}
1522
Mark Lordc01e8a22009-02-25 15:14:48 -05001523/**
Mark Lord40f21b12009-03-10 18:51:04 -04001524 * mv_bmdma_enable - set a magic bit on GEN_IIE to allow bmdma
1525 * @ap: Port being initialized
Mark Lordc01e8a22009-02-25 15:14:48 -05001526 *
1527 * There are two DMA modes on these chips: basic DMA, and EDMA.
1528 *
1529 * Bit-0 of the "EDMA RESERVED" register enables/disables use
1530 * of basic DMA on the GEN_IIE versions of the chips.
1531 *
1532 * This bit survives EDMA resets, and must be set for basic DMA
1533 * to function, and should be cleared when EDMA is active.
1534 */
1535static void mv_bmdma_enable_iie(struct ata_port *ap, int enable_bmdma)
1536{
1537 struct mv_port_priv *pp = ap->private_data;
1538 u32 new, *old = &pp->cached.unknown_rsvd;
1539
1540 if (enable_bmdma)
1541 new = *old | 1;
1542 else
1543 new = *old & ~1;
Mark Lordcae5a292009-04-06 16:43:45 -04001544 mv_write_cached_reg(mv_ap_base(ap) + EDMA_UNKNOWN_RSVD, old, new);
Mark Lordc01e8a22009-02-25 15:14:48 -05001545}
1546
Mark Lord000b3442009-03-15 11:33:19 -04001547/*
1548 * SOC chips have an issue whereby the HDD LEDs don't always blink
1549 * during I/O when NCQ is enabled. Enabling a special "LED blink" mode
1550 * of the SOC takes care of it, generating a steady blink rate when
1551 * any drive on the chip is active.
1552 *
1553 * Unfortunately, the blink mode is a global hardware setting for the SOC,
1554 * so we must use it whenever at least one port on the SOC has NCQ enabled.
1555 *
1556 * We turn "LED blink" off when NCQ is not in use anywhere, because the normal
1557 * LED operation works then, and provides better (more accurate) feedback.
1558 *
1559 * Note that this code assumes that an SOC never has more than one HC onboard.
1560 */
1561static void mv_soc_led_blink_enable(struct ata_port *ap)
1562{
1563 struct ata_host *host = ap->host;
1564 struct mv_host_priv *hpriv = host->private_data;
1565 void __iomem *hc_mmio;
1566 u32 led_ctrl;
1567
1568 if (hpriv->hp_flags & MV_HP_QUIRK_LED_BLINK_EN)
1569 return;
1570 hpriv->hp_flags |= MV_HP_QUIRK_LED_BLINK_EN;
1571 hc_mmio = mv_hc_base_from_port(mv_host_base(host), ap->port_no);
Mark Lordcae5a292009-04-06 16:43:45 -04001572 led_ctrl = readl(hc_mmio + SOC_LED_CTRL);
1573 writel(led_ctrl | SOC_LED_CTRL_BLINK, hc_mmio + SOC_LED_CTRL);
Mark Lord000b3442009-03-15 11:33:19 -04001574}
1575
1576static void mv_soc_led_blink_disable(struct ata_port *ap)
1577{
1578 struct ata_host *host = ap->host;
1579 struct mv_host_priv *hpriv = host->private_data;
1580 void __iomem *hc_mmio;
1581 u32 led_ctrl;
1582 unsigned int port;
1583
1584 if (!(hpriv->hp_flags & MV_HP_QUIRK_LED_BLINK_EN))
1585 return;
1586
1587 /* disable led-blink only if no ports are using NCQ */
1588 for (port = 0; port < hpriv->n_ports; port++) {
1589 struct ata_port *this_ap = host->ports[port];
1590 struct mv_port_priv *pp = this_ap->private_data;
1591
1592 if (pp->pp_flags & MV_PP_FLAG_NCQ_EN)
1593 return;
1594 }
1595
1596 hpriv->hp_flags &= ~MV_HP_QUIRK_LED_BLINK_EN;
1597 hc_mmio = mv_hc_base_from_port(mv_host_base(host), ap->port_no);
Mark Lordcae5a292009-04-06 16:43:45 -04001598 led_ctrl = readl(hc_mmio + SOC_LED_CTRL);
1599 writel(led_ctrl & ~SOC_LED_CTRL_BLINK, hc_mmio + SOC_LED_CTRL);
Mark Lord000b3442009-03-15 11:33:19 -04001600}
1601
Mark Lord00b81232009-01-30 18:47:51 -05001602static void mv_edma_cfg(struct ata_port *ap, int want_ncq, int want_edma)
Jeff Garzike4e7b892006-01-31 12:18:41 -05001603{
1604 u32 cfg;
Mark Lorde12bef52008-03-31 19:33:56 -04001605 struct mv_port_priv *pp = ap->private_data;
1606 struct mv_host_priv *hpriv = ap->host->private_data;
1607 void __iomem *port_mmio = mv_ap_base(ap);
Jeff Garzike4e7b892006-01-31 12:18:41 -05001608
1609 /* set up non-NCQ EDMA configuration */
1610 cfg = EDMA_CFG_Q_DEPTH; /* always 0x1f for *all* chips */
Mark Lordd16ab3f2009-02-25 15:17:43 -05001611 pp->pp_flags &=
1612 ~(MV_PP_FLAG_FBS_EN | MV_PP_FLAG_NCQ_EN | MV_PP_FLAG_FAKE_ATA_BUSY);
Jeff Garzike4e7b892006-01-31 12:18:41 -05001613
1614 if (IS_GEN_I(hpriv))
1615 cfg |= (1 << 8); /* enab config burst size mask */
1616
Mark Lorddd2890f2008-05-02 02:10:56 -04001617 else if (IS_GEN_II(hpriv)) {
Jeff Garzike4e7b892006-01-31 12:18:41 -05001618 cfg |= EDMA_CFG_RD_BRST_EXT | EDMA_CFG_WR_BUFF_LEN;
Mark Lorddd2890f2008-05-02 02:10:56 -04001619 mv_60x1_errata_sata25(ap, want_ncq);
Jeff Garzike4e7b892006-01-31 12:18:41 -05001620
Mark Lorddd2890f2008-05-02 02:10:56 -04001621 } else if (IS_GEN_IIE(hpriv)) {
Mark Lord00f42ea2008-05-02 02:11:45 -04001622 int want_fbs = sata_pmp_attached(ap);
1623 /*
1624 * Possible future enhancement:
1625 *
1626 * The chip can use FBS with non-NCQ, if we allow it,
1627 * But first we need to have the error handling in place
1628 * for this mode (datasheet section 7.3.15.4.2.3).
1629 * So disallow non-NCQ FBS for now.
1630 */
1631 want_fbs &= want_ncq;
1632
Mark Lord08da1752009-02-25 15:13:03 -05001633 mv_config_fbs(ap, want_ncq, want_fbs);
Mark Lord00f42ea2008-05-02 02:11:45 -04001634
1635 if (want_fbs) {
1636 pp->pp_flags |= MV_PP_FLAG_FBS_EN;
1637 cfg |= EDMA_CFG_EDMA_FBS; /* FIS-based switching */
1638 }
1639
Jeff Garzike728eab2007-02-25 02:53:41 -05001640 cfg |= (1 << 23); /* do not mask PM field in rx'd FIS */
Mark Lord00b81232009-01-30 18:47:51 -05001641 if (want_edma) {
1642 cfg |= (1 << 22); /* enab 4-entry host queue cache */
1643 if (!IS_SOC(hpriv))
1644 cfg |= (1 << 18); /* enab early completion */
1645 }
Mark Lord616d4a92008-05-02 02:08:32 -04001646 if (hpriv->hp_flags & MV_HP_CUT_THROUGH)
1647 cfg |= (1 << 17); /* enab cut-thru (dis stor&forwrd) */
Mark Lordc01e8a22009-02-25 15:14:48 -05001648 mv_bmdma_enable_iie(ap, !want_edma);
Mark Lord000b3442009-03-15 11:33:19 -04001649
1650 if (IS_SOC(hpriv)) {
1651 if (want_ncq)
1652 mv_soc_led_blink_enable(ap);
1653 else
1654 mv_soc_led_blink_disable(ap);
1655 }
Jeff Garzike4e7b892006-01-31 12:18:41 -05001656 }
1657
Mark Lord72109162008-01-26 18:31:33 -05001658 if (want_ncq) {
1659 cfg |= EDMA_CFG_NCQ;
1660 pp->pp_flags |= MV_PP_FLAG_NCQ_EN;
Mark Lord00b81232009-01-30 18:47:51 -05001661 }
Mark Lord72109162008-01-26 18:31:33 -05001662
Mark Lordcae5a292009-04-06 16:43:45 -04001663 writelfl(cfg, port_mmio + EDMA_CFG);
Jeff Garzike4e7b892006-01-31 12:18:41 -05001664}
1665
Mark Lordda2fa9b2008-01-26 18:32:45 -05001666static void mv_port_free_dma_mem(struct ata_port *ap)
1667{
1668 struct mv_host_priv *hpriv = ap->host->private_data;
1669 struct mv_port_priv *pp = ap->private_data;
Mark Lordeb73d552008-01-29 13:24:00 -05001670 int tag;
Mark Lordda2fa9b2008-01-26 18:32:45 -05001671
1672 if (pp->crqb) {
1673 dma_pool_free(hpriv->crqb_pool, pp->crqb, pp->crqb_dma);
1674 pp->crqb = NULL;
1675 }
1676 if (pp->crpb) {
1677 dma_pool_free(hpriv->crpb_pool, pp->crpb, pp->crpb_dma);
1678 pp->crpb = NULL;
1679 }
Mark Lordeb73d552008-01-29 13:24:00 -05001680 /*
1681 * For GEN_I, there's no NCQ, so we have only a single sg_tbl.
1682 * For later hardware, we have one unique sg_tbl per NCQ tag.
1683 */
1684 for (tag = 0; tag < MV_MAX_Q_DEPTH; ++tag) {
1685 if (pp->sg_tbl[tag]) {
1686 if (tag == 0 || !IS_GEN_I(hpriv))
1687 dma_pool_free(hpriv->sg_tbl_pool,
1688 pp->sg_tbl[tag],
1689 pp->sg_tbl_dma[tag]);
1690 pp->sg_tbl[tag] = NULL;
1691 }
Mark Lordda2fa9b2008-01-26 18:32:45 -05001692 }
1693}
1694
Brett Russ05b308e2005-10-05 17:08:53 -04001695/**
1696 * mv_port_start - Port specific init/start routine.
1697 * @ap: ATA channel to manipulate
1698 *
1699 * Allocate and point to DMA memory, init port private memory,
1700 * zero indices.
1701 *
1702 * LOCKING:
1703 * Inherited from caller.
1704 */
Brett Russ31961942005-09-30 01:36:00 -04001705static int mv_port_start(struct ata_port *ap)
1706{
Jeff Garzikcca39742006-08-24 03:19:22 -04001707 struct device *dev = ap->host->dev;
1708 struct mv_host_priv *hpriv = ap->host->private_data;
Brett Russ31961942005-09-30 01:36:00 -04001709 struct mv_port_priv *pp;
Mark Lord933cb8e2009-04-06 12:30:43 -04001710 unsigned long flags;
James Bottomleydde20202008-02-19 11:36:56 +01001711 int tag;
Brett Russ31961942005-09-30 01:36:00 -04001712
Tejun Heo24dc5f32007-01-20 16:00:28 +09001713 pp = devm_kzalloc(dev, sizeof(*pp), GFP_KERNEL);
Jeff Garzik6037d6b2005-11-04 22:08:00 -05001714 if (!pp)
Tejun Heo24dc5f32007-01-20 16:00:28 +09001715 return -ENOMEM;
Mark Lordda2fa9b2008-01-26 18:32:45 -05001716 ap->private_data = pp;
Brett Russ31961942005-09-30 01:36:00 -04001717
Mark Lordda2fa9b2008-01-26 18:32:45 -05001718 pp->crqb = dma_pool_alloc(hpriv->crqb_pool, GFP_KERNEL, &pp->crqb_dma);
1719 if (!pp->crqb)
1720 return -ENOMEM;
1721 memset(pp->crqb, 0, MV_CRQB_Q_SZ);
Brett Russ31961942005-09-30 01:36:00 -04001722
Mark Lordda2fa9b2008-01-26 18:32:45 -05001723 pp->crpb = dma_pool_alloc(hpriv->crpb_pool, GFP_KERNEL, &pp->crpb_dma);
1724 if (!pp->crpb)
1725 goto out_port_free_dma_mem;
1726 memset(pp->crpb, 0, MV_CRPB_Q_SZ);
Brett Russ31961942005-09-30 01:36:00 -04001727
Mark Lord3bd0a702008-06-18 12:11:16 -04001728 /* 6041/6081 Rev. "C0" (and newer) are okay with async notify */
1729 if (hpriv->hp_flags & MV_HP_ERRATA_60X1C0)
1730 ap->flags |= ATA_FLAG_AN;
Mark Lordeb73d552008-01-29 13:24:00 -05001731 /*
1732 * For GEN_I, there's no NCQ, so we only allocate a single sg_tbl.
1733 * For later hardware, we need one unique sg_tbl per NCQ tag.
1734 */
1735 for (tag = 0; tag < MV_MAX_Q_DEPTH; ++tag) {
1736 if (tag == 0 || !IS_GEN_I(hpriv)) {
1737 pp->sg_tbl[tag] = dma_pool_alloc(hpriv->sg_tbl_pool,
1738 GFP_KERNEL, &pp->sg_tbl_dma[tag]);
1739 if (!pp->sg_tbl[tag])
1740 goto out_port_free_dma_mem;
1741 } else {
1742 pp->sg_tbl[tag] = pp->sg_tbl[0];
1743 pp->sg_tbl_dma[tag] = pp->sg_tbl_dma[0];
1744 }
1745 }
Mark Lord933cb8e2009-04-06 12:30:43 -04001746
1747 spin_lock_irqsave(ap->lock, flags);
Mark Lord08da1752009-02-25 15:13:03 -05001748 mv_save_cached_regs(ap);
Mark Lord66e57a22009-01-30 18:52:58 -05001749 mv_edma_cfg(ap, 0, 0);
Mark Lord933cb8e2009-04-06 12:30:43 -04001750 spin_unlock_irqrestore(ap->lock, flags);
1751
Brett Russ31961942005-09-30 01:36:00 -04001752 return 0;
Mark Lordda2fa9b2008-01-26 18:32:45 -05001753
1754out_port_free_dma_mem:
1755 mv_port_free_dma_mem(ap);
1756 return -ENOMEM;
Brett Russ31961942005-09-30 01:36:00 -04001757}
1758
Brett Russ05b308e2005-10-05 17:08:53 -04001759/**
1760 * mv_port_stop - Port specific cleanup/stop routine.
1761 * @ap: ATA channel to manipulate
1762 *
1763 * Stop DMA, cleanup port memory.
1764 *
1765 * LOCKING:
Jeff Garzikcca39742006-08-24 03:19:22 -04001766 * This routine uses the host lock to protect the DMA stop.
Brett Russ05b308e2005-10-05 17:08:53 -04001767 */
Brett Russ31961942005-09-30 01:36:00 -04001768static void mv_port_stop(struct ata_port *ap)
1769{
Mark Lord933cb8e2009-04-06 12:30:43 -04001770 unsigned long flags;
1771
1772 spin_lock_irqsave(ap->lock, flags);
Mark Lorde12bef52008-03-31 19:33:56 -04001773 mv_stop_edma(ap);
Mark Lord88e675e2008-05-17 13:36:30 -04001774 mv_enable_port_irqs(ap, 0);
Mark Lord933cb8e2009-04-06 12:30:43 -04001775 spin_unlock_irqrestore(ap->lock, flags);
Mark Lordda2fa9b2008-01-26 18:32:45 -05001776 mv_port_free_dma_mem(ap);
Brett Russ31961942005-09-30 01:36:00 -04001777}
1778
Brett Russ05b308e2005-10-05 17:08:53 -04001779/**
1780 * mv_fill_sg - Fill out the Marvell ePRD (scatter gather) entries
1781 * @qc: queued command whose SG list to source from
1782 *
1783 * Populate the SG list and mark the last entry.
1784 *
1785 * LOCKING:
1786 * Inherited from caller.
1787 */
Jeff Garzik6c087722007-10-12 00:16:23 -04001788static void mv_fill_sg(struct ata_queued_cmd *qc)
Brett Russ31961942005-09-30 01:36:00 -04001789{
1790 struct mv_port_priv *pp = qc->ap->private_data;
Jeff Garzik972c26b2005-10-18 22:14:54 -04001791 struct scatterlist *sg;
Jeff Garzik3be6cbd2007-10-18 16:21:18 -04001792 struct mv_sg *mv_sg, *last_sg = NULL;
Tejun Heoff2aeb12007-12-05 16:43:11 +09001793 unsigned int si;
Brett Russ31961942005-09-30 01:36:00 -04001794
Mark Lordeb73d552008-01-29 13:24:00 -05001795 mv_sg = pp->sg_tbl[qc->tag];
Tejun Heoff2aeb12007-12-05 16:43:11 +09001796 for_each_sg(qc->sg, sg, qc->n_elem, si) {
Jeff Garzikd88184f2007-02-26 01:26:06 -05001797 dma_addr_t addr = sg_dma_address(sg);
1798 u32 sg_len = sg_dma_len(sg);
Brett Russ31961942005-09-30 01:36:00 -04001799
Olof Johansson4007b492007-10-02 20:45:27 -05001800 while (sg_len) {
1801 u32 offset = addr & 0xffff;
1802 u32 len = sg_len;
Brett Russ31961942005-09-30 01:36:00 -04001803
Mark Lord32cd11a2009-02-01 16:50:32 -05001804 if (offset + len > 0x10000)
Olof Johansson4007b492007-10-02 20:45:27 -05001805 len = 0x10000 - offset;
Jeff Garzik972c26b2005-10-18 22:14:54 -04001806
Olof Johansson4007b492007-10-02 20:45:27 -05001807 mv_sg->addr = cpu_to_le32(addr & 0xffffffff);
1808 mv_sg->addr_hi = cpu_to_le32((addr >> 16) >> 16);
Jeff Garzik6c087722007-10-12 00:16:23 -04001809 mv_sg->flags_size = cpu_to_le32(len & 0xffff);
Mark Lord32cd11a2009-02-01 16:50:32 -05001810 mv_sg->reserved = 0;
Olof Johansson4007b492007-10-02 20:45:27 -05001811
1812 sg_len -= len;
1813 addr += len;
1814
Jeff Garzik3be6cbd2007-10-18 16:21:18 -04001815 last_sg = mv_sg;
Olof Johansson4007b492007-10-02 20:45:27 -05001816 mv_sg++;
Olof Johansson4007b492007-10-02 20:45:27 -05001817 }
Brett Russ31961942005-09-30 01:36:00 -04001818 }
Jeff Garzik3be6cbd2007-10-18 16:21:18 -04001819
1820 if (likely(last_sg))
1821 last_sg->flags_size |= cpu_to_le32(EPRD_FLAG_END_OF_TBL);
Mark Lord32cd11a2009-02-01 16:50:32 -05001822 mb(); /* ensure data structure is visible to the chipset */
Brett Russ31961942005-09-30 01:36:00 -04001823}
1824
Jeff Garzik5796d1c2007-10-26 00:03:37 -04001825static void mv_crqb_pack_cmd(__le16 *cmdw, u8 data, u8 addr, unsigned last)
Brett Russ31961942005-09-30 01:36:00 -04001826{
Mark Lord559eeda2006-05-19 16:40:15 -04001827 u16 tmp = data | (addr << CRQB_CMD_ADDR_SHIFT) | CRQB_CMD_CS |
Brett Russ31961942005-09-30 01:36:00 -04001828 (last ? CRQB_CMD_LAST : 0);
Mark Lord559eeda2006-05-19 16:40:15 -04001829 *cmdw = cpu_to_le16(tmp);
Brett Russ31961942005-09-30 01:36:00 -04001830}
1831
Brett Russ05b308e2005-10-05 17:08:53 -04001832/**
Mark Lordda142652009-01-30 18:51:54 -05001833 * mv_sff_irq_clear - Clear hardware interrupt after DMA.
1834 * @ap: Port associated with this ATA transaction.
1835 *
1836 * We need this only for ATAPI bmdma transactions,
1837 * as otherwise we experience spurious interrupts
1838 * after libata-sff handles the bmdma interrupts.
1839 */
1840static void mv_sff_irq_clear(struct ata_port *ap)
1841{
1842 mv_clear_and_enable_port_irqs(ap, mv_ap_base(ap), ERR_IRQ);
1843}
1844
1845/**
1846 * mv_check_atapi_dma - Filter ATAPI cmds which are unsuitable for DMA.
1847 * @qc: queued command to check for chipset/DMA compatibility.
1848 *
1849 * The bmdma engines cannot handle speculative data sizes
1850 * (bytecount under/over flow). So only allow DMA for
1851 * data transfer commands with known data sizes.
1852 *
1853 * LOCKING:
1854 * Inherited from caller.
1855 */
1856static int mv_check_atapi_dma(struct ata_queued_cmd *qc)
1857{
1858 struct scsi_cmnd *scmd = qc->scsicmd;
1859
1860 if (scmd) {
1861 switch (scmd->cmnd[0]) {
1862 case READ_6:
1863 case READ_10:
1864 case READ_12:
1865 case WRITE_6:
1866 case WRITE_10:
1867 case WRITE_12:
1868 case GPCMD_READ_CD:
1869 case GPCMD_SEND_DVD_STRUCTURE:
1870 case GPCMD_SEND_CUE_SHEET:
1871 return 0; /* DMA is safe */
1872 }
1873 }
1874 return -EOPNOTSUPP; /* use PIO instead */
1875}
1876
1877/**
1878 * mv_bmdma_setup - Set up BMDMA transaction
1879 * @qc: queued command to prepare DMA for.
1880 *
1881 * LOCKING:
1882 * Inherited from caller.
1883 */
1884static void mv_bmdma_setup(struct ata_queued_cmd *qc)
1885{
1886 struct ata_port *ap = qc->ap;
1887 void __iomem *port_mmio = mv_ap_base(ap);
1888 struct mv_port_priv *pp = ap->private_data;
1889
1890 mv_fill_sg(qc);
1891
1892 /* clear all DMA cmd bits */
Mark Lordcae5a292009-04-06 16:43:45 -04001893 writel(0, port_mmio + BMDMA_CMD);
Mark Lordda142652009-01-30 18:51:54 -05001894
1895 /* load PRD table addr. */
1896 writel((pp->sg_tbl_dma[qc->tag] >> 16) >> 16,
Mark Lordcae5a292009-04-06 16:43:45 -04001897 port_mmio + BMDMA_PRD_HIGH);
Mark Lordda142652009-01-30 18:51:54 -05001898 writelfl(pp->sg_tbl_dma[qc->tag],
Mark Lordcae5a292009-04-06 16:43:45 -04001899 port_mmio + BMDMA_PRD_LOW);
Mark Lordda142652009-01-30 18:51:54 -05001900
1901 /* issue r/w command */
1902 ap->ops->sff_exec_command(ap, &qc->tf);
1903}
1904
1905/**
1906 * mv_bmdma_start - Start a BMDMA transaction
1907 * @qc: queued command to start DMA on.
1908 *
1909 * LOCKING:
1910 * Inherited from caller.
1911 */
1912static void mv_bmdma_start(struct ata_queued_cmd *qc)
1913{
1914 struct ata_port *ap = qc->ap;
1915 void __iomem *port_mmio = mv_ap_base(ap);
1916 unsigned int rw = (qc->tf.flags & ATA_TFLAG_WRITE);
1917 u32 cmd = (rw ? 0 : ATA_DMA_WR) | ATA_DMA_START;
1918
1919 /* start host DMA transaction */
Mark Lordcae5a292009-04-06 16:43:45 -04001920 writelfl(cmd, port_mmio + BMDMA_CMD);
Mark Lordda142652009-01-30 18:51:54 -05001921}
1922
1923/**
1924 * mv_bmdma_stop - Stop BMDMA transfer
1925 * @qc: queued command to stop DMA on.
1926 *
1927 * Clears the ATA_DMA_START flag in the bmdma control register
1928 *
1929 * LOCKING:
1930 * Inherited from caller.
1931 */
Mark Lord44b73382010-08-19 21:40:44 -04001932static void mv_bmdma_stop_ap(struct ata_port *ap)
Mark Lordda142652009-01-30 18:51:54 -05001933{
Mark Lordda142652009-01-30 18:51:54 -05001934 void __iomem *port_mmio = mv_ap_base(ap);
1935 u32 cmd;
1936
1937 /* clear start/stop bit */
Mark Lordcae5a292009-04-06 16:43:45 -04001938 cmd = readl(port_mmio + BMDMA_CMD);
Mark Lord44b73382010-08-19 21:40:44 -04001939 if (cmd & ATA_DMA_START) {
1940 cmd &= ~ATA_DMA_START;
1941 writelfl(cmd, port_mmio + BMDMA_CMD);
Mark Lordda142652009-01-30 18:51:54 -05001942
Mark Lord44b73382010-08-19 21:40:44 -04001943 /* one-PIO-cycle guaranteed wait, per spec, for HDMA1:0 transition */
1944 ata_sff_dma_pause(ap);
1945 }
1946}
1947
1948static void mv_bmdma_stop(struct ata_queued_cmd *qc)
1949{
1950 mv_bmdma_stop_ap(qc->ap);
Mark Lordda142652009-01-30 18:51:54 -05001951}
1952
1953/**
1954 * mv_bmdma_status - Read BMDMA status
1955 * @ap: port for which to retrieve DMA status.
1956 *
1957 * Read and return equivalent of the sff BMDMA status register.
1958 *
1959 * LOCKING:
1960 * Inherited from caller.
1961 */
1962static u8 mv_bmdma_status(struct ata_port *ap)
1963{
1964 void __iomem *port_mmio = mv_ap_base(ap);
1965 u32 reg, status;
1966
1967 /*
1968 * Other bits are valid only if ATA_DMA_ACTIVE==0,
1969 * and the ATA_DMA_INTR bit doesn't exist.
1970 */
Mark Lordcae5a292009-04-06 16:43:45 -04001971 reg = readl(port_mmio + BMDMA_STATUS);
Mark Lordda142652009-01-30 18:51:54 -05001972 if (reg & ATA_DMA_ACTIVE)
1973 status = ATA_DMA_ACTIVE;
Mark Lord44b73382010-08-19 21:40:44 -04001974 else if (reg & ATA_DMA_ERR)
Mark Lordda142652009-01-30 18:51:54 -05001975 status = (reg & ATA_DMA_ERR) | ATA_DMA_INTR;
Mark Lord44b73382010-08-19 21:40:44 -04001976 else {
1977 /*
1978 * Just because DMA_ACTIVE is 0 (DMA completed),
1979 * this does _not_ mean the device is "done".
1980 * So we should not yet be signalling ATA_DMA_INTR
1981 * in some cases. Eg. DSM/TRIM, and perhaps others.
1982 */
1983 mv_bmdma_stop_ap(ap);
1984 if (ioread8(ap->ioaddr.altstatus_addr) & ATA_BUSY)
1985 status = 0;
1986 else
1987 status = ATA_DMA_INTR;
1988 }
Mark Lordda142652009-01-30 18:51:54 -05001989 return status;
1990}
1991
Mark Lord299b3f82009-04-13 11:29:34 -04001992static void mv_rw_multi_errata_sata24(struct ata_queued_cmd *qc)
1993{
1994 struct ata_taskfile *tf = &qc->tf;
1995 /*
1996 * Workaround for 88SX60x1 FEr SATA#24.
1997 *
1998 * Chip may corrupt WRITEs if multi_count >= 4kB.
1999 * Note that READs are unaffected.
2000 *
2001 * It's not clear if this errata really means "4K bytes",
2002 * or if it always happens for multi_count > 7
2003 * regardless of device sector_size.
2004 *
2005 * So, for safety, any write with multi_count > 7
2006 * gets converted here into a regular PIO write instead:
2007 */
2008 if ((tf->flags & ATA_TFLAG_WRITE) && is_multi_taskfile(tf)) {
2009 if (qc->dev->multi_count > 7) {
2010 switch (tf->command) {
2011 case ATA_CMD_WRITE_MULTI:
2012 tf->command = ATA_CMD_PIO_WRITE;
2013 break;
2014 case ATA_CMD_WRITE_MULTI_FUA_EXT:
2015 tf->flags &= ~ATA_TFLAG_FUA; /* ugh */
2016 /* fall through */
2017 case ATA_CMD_WRITE_MULTI_EXT:
2018 tf->command = ATA_CMD_PIO_WRITE_EXT;
2019 break;
2020 }
2021 }
2022 }
2023}
2024
Mark Lordda142652009-01-30 18:51:54 -05002025/**
Brett Russ05b308e2005-10-05 17:08:53 -04002026 * mv_qc_prep - Host specific command preparation.
2027 * @qc: queued command to prepare
2028 *
2029 * This routine simply redirects to the general purpose routine
2030 * if command is not DMA. Else, it handles prep of the CRQB
2031 * (command request block), does some sanity checking, and calls
2032 * the SG load routine.
2033 *
2034 * LOCKING:
2035 * Inherited from caller.
2036 */
Brett Russ31961942005-09-30 01:36:00 -04002037static void mv_qc_prep(struct ata_queued_cmd *qc)
2038{
2039 struct ata_port *ap = qc->ap;
2040 struct mv_port_priv *pp = ap->private_data;
Mark Lorde1469872006-05-22 19:02:03 -04002041 __le16 *cw;
Mark Lord8d2b4502009-04-13 11:27:18 -04002042 struct ata_taskfile *tf = &qc->tf;
Brett Russ31961942005-09-30 01:36:00 -04002043 u16 flags = 0;
Mark Lorda6432432006-05-19 16:36:36 -04002044 unsigned in_index;
Brett Russ31961942005-09-30 01:36:00 -04002045
Mark Lord299b3f82009-04-13 11:29:34 -04002046 switch (tf->protocol) {
2047 case ATA_PROT_DMA:
Mark Lord44b73382010-08-19 21:40:44 -04002048 if (tf->command == ATA_CMD_DSM)
2049 return;
2050 /* fall-thru */
Mark Lord299b3f82009-04-13 11:29:34 -04002051 case ATA_PROT_NCQ:
2052 break; /* continue below */
2053 case ATA_PROT_PIO:
2054 mv_rw_multi_errata_sata24(qc);
Brett Russ31961942005-09-30 01:36:00 -04002055 return;
Mark Lord299b3f82009-04-13 11:29:34 -04002056 default:
2057 return;
2058 }
Brett Russ20f733e2005-09-01 18:26:17 -04002059
Brett Russ31961942005-09-30 01:36:00 -04002060 /* Fill in command request block
2061 */
Mark Lord8d2b4502009-04-13 11:27:18 -04002062 if (!(tf->flags & ATA_TFLAG_WRITE))
Brett Russ31961942005-09-30 01:36:00 -04002063 flags |= CRQB_FLAG_READ;
Tejun Heobeec7db2006-02-11 19:11:13 +09002064 WARN_ON(MV_MAX_Q_DEPTH <= qc->tag);
Brett Russ31961942005-09-30 01:36:00 -04002065 flags |= qc->tag << CRQB_TAG_SHIFT;
Mark Lorde49856d2008-04-16 14:59:07 -04002066 flags |= (qc->dev->link->pmp & 0xf) << CRQB_PMP_SHIFT;
Brett Russ31961942005-09-30 01:36:00 -04002067
Jeff Garzikbdd4ddd2007-07-12 14:34:26 -04002068 /* get current queue index from software */
Mark Lordfcfb1f72008-04-19 15:06:40 -04002069 in_index = pp->req_idx;
Brett Russ31961942005-09-30 01:36:00 -04002070
Mark Lorda6432432006-05-19 16:36:36 -04002071 pp->crqb[in_index].sg_addr =
Mark Lordeb73d552008-01-29 13:24:00 -05002072 cpu_to_le32(pp->sg_tbl_dma[qc->tag] & 0xffffffff);
Mark Lorda6432432006-05-19 16:36:36 -04002073 pp->crqb[in_index].sg_addr_hi =
Mark Lordeb73d552008-01-29 13:24:00 -05002074 cpu_to_le32((pp->sg_tbl_dma[qc->tag] >> 16) >> 16);
Mark Lorda6432432006-05-19 16:36:36 -04002075 pp->crqb[in_index].ctrl_flags = cpu_to_le16(flags);
2076
2077 cw = &pp->crqb[in_index].ata_cmd[0];
Brett Russ31961942005-09-30 01:36:00 -04002078
Lucas De Marchi25985ed2011-03-30 22:57:33 -03002079 /* Sadly, the CRQB cannot accommodate all registers--there are
Brett Russ31961942005-09-30 01:36:00 -04002080 * only 11 bytes...so we must pick and choose required
2081 * registers based on the command. So, we drop feature and
2082 * hob_feature for [RW] DMA commands, but they are needed for
Mark Lordcd12e1f2009-01-19 18:06:28 -05002083 * NCQ. NCQ will drop hob_nsect, which is not needed there
2084 * (nsect is used only for the tag; feat/hob_feat hold true nsect).
Brett Russ31961942005-09-30 01:36:00 -04002085 */
2086 switch (tf->command) {
2087 case ATA_CMD_READ:
2088 case ATA_CMD_READ_EXT:
2089 case ATA_CMD_WRITE:
2090 case ATA_CMD_WRITE_EXT:
Jens Axboec15d85c2006-02-15 15:59:25 +01002091 case ATA_CMD_WRITE_FUA_EXT:
Brett Russ31961942005-09-30 01:36:00 -04002092 mv_crqb_pack_cmd(cw++, tf->hob_nsect, ATA_REG_NSECT, 0);
2093 break;
Brett Russ31961942005-09-30 01:36:00 -04002094 case ATA_CMD_FPDMA_READ:
2095 case ATA_CMD_FPDMA_WRITE:
Jeff Garzik8b260242005-11-12 12:32:50 -05002096 mv_crqb_pack_cmd(cw++, tf->hob_feature, ATA_REG_FEATURE, 0);
Brett Russ31961942005-09-30 01:36:00 -04002097 mv_crqb_pack_cmd(cw++, tf->feature, ATA_REG_FEATURE, 0);
2098 break;
Brett Russ31961942005-09-30 01:36:00 -04002099 default:
2100 /* The only other commands EDMA supports in non-queued and
2101 * non-NCQ mode are: [RW] STREAM DMA and W DMA FUA EXT, none
2102 * of which are defined/used by Linux. If we get here, this
2103 * driver needs work.
2104 *
2105 * FIXME: modify libata to give qc_prep a return value and
2106 * return error here.
2107 */
2108 BUG_ON(tf->command);
2109 break;
2110 }
2111 mv_crqb_pack_cmd(cw++, tf->nsect, ATA_REG_NSECT, 0);
2112 mv_crqb_pack_cmd(cw++, tf->hob_lbal, ATA_REG_LBAL, 0);
2113 mv_crqb_pack_cmd(cw++, tf->lbal, ATA_REG_LBAL, 0);
2114 mv_crqb_pack_cmd(cw++, tf->hob_lbam, ATA_REG_LBAM, 0);
2115 mv_crqb_pack_cmd(cw++, tf->lbam, ATA_REG_LBAM, 0);
2116 mv_crqb_pack_cmd(cw++, tf->hob_lbah, ATA_REG_LBAH, 0);
2117 mv_crqb_pack_cmd(cw++, tf->lbah, ATA_REG_LBAH, 0);
2118 mv_crqb_pack_cmd(cw++, tf->device, ATA_REG_DEVICE, 0);
2119 mv_crqb_pack_cmd(cw++, tf->command, ATA_REG_CMD, 1); /* last */
2120
Jeff Garzike4e7b892006-01-31 12:18:41 -05002121 if (!(qc->flags & ATA_QCFLAG_DMAMAP))
Brett Russ31961942005-09-30 01:36:00 -04002122 return;
Jeff Garzike4e7b892006-01-31 12:18:41 -05002123 mv_fill_sg(qc);
2124}
2125
2126/**
2127 * mv_qc_prep_iie - Host specific command preparation.
2128 * @qc: queued command to prepare
2129 *
2130 * This routine simply redirects to the general purpose routine
2131 * if command is not DMA. Else, it handles prep of the CRQB
2132 * (command request block), does some sanity checking, and calls
2133 * the SG load routine.
2134 *
2135 * LOCKING:
2136 * Inherited from caller.
2137 */
2138static void mv_qc_prep_iie(struct ata_queued_cmd *qc)
2139{
2140 struct ata_port *ap = qc->ap;
2141 struct mv_port_priv *pp = ap->private_data;
2142 struct mv_crqb_iie *crqb;
Mark Lord8d2b4502009-04-13 11:27:18 -04002143 struct ata_taskfile *tf = &qc->tf;
Mark Lorda6432432006-05-19 16:36:36 -04002144 unsigned in_index;
Jeff Garzike4e7b892006-01-31 12:18:41 -05002145 u32 flags = 0;
2146
Mark Lord8d2b4502009-04-13 11:27:18 -04002147 if ((tf->protocol != ATA_PROT_DMA) &&
2148 (tf->protocol != ATA_PROT_NCQ))
Jeff Garzike4e7b892006-01-31 12:18:41 -05002149 return;
Mark Lord44b73382010-08-19 21:40:44 -04002150 if (tf->command == ATA_CMD_DSM)
2151 return; /* use bmdma for this */
Jeff Garzike4e7b892006-01-31 12:18:41 -05002152
Mark Lorde12bef52008-03-31 19:33:56 -04002153 /* Fill in Gen IIE command request block */
Mark Lord8d2b4502009-04-13 11:27:18 -04002154 if (!(tf->flags & ATA_TFLAG_WRITE))
Jeff Garzike4e7b892006-01-31 12:18:41 -05002155 flags |= CRQB_FLAG_READ;
2156
Tejun Heobeec7db2006-02-11 19:11:13 +09002157 WARN_ON(MV_MAX_Q_DEPTH <= qc->tag);
Jeff Garzike4e7b892006-01-31 12:18:41 -05002158 flags |= qc->tag << CRQB_TAG_SHIFT;
Mark Lord8c0aeb42008-01-26 18:31:48 -05002159 flags |= qc->tag << CRQB_HOSTQ_SHIFT;
Mark Lorde49856d2008-04-16 14:59:07 -04002160 flags |= (qc->dev->link->pmp & 0xf) << CRQB_PMP_SHIFT;
Jeff Garzike4e7b892006-01-31 12:18:41 -05002161
Jeff Garzikbdd4ddd2007-07-12 14:34:26 -04002162 /* get current queue index from software */
Mark Lordfcfb1f72008-04-19 15:06:40 -04002163 in_index = pp->req_idx;
Mark Lorda6432432006-05-19 16:36:36 -04002164
2165 crqb = (struct mv_crqb_iie *) &pp->crqb[in_index];
Mark Lordeb73d552008-01-29 13:24:00 -05002166 crqb->addr = cpu_to_le32(pp->sg_tbl_dma[qc->tag] & 0xffffffff);
2167 crqb->addr_hi = cpu_to_le32((pp->sg_tbl_dma[qc->tag] >> 16) >> 16);
Jeff Garzike4e7b892006-01-31 12:18:41 -05002168 crqb->flags = cpu_to_le32(flags);
2169
Jeff Garzike4e7b892006-01-31 12:18:41 -05002170 crqb->ata_cmd[0] = cpu_to_le32(
2171 (tf->command << 16) |
2172 (tf->feature << 24)
2173 );
2174 crqb->ata_cmd[1] = cpu_to_le32(
2175 (tf->lbal << 0) |
2176 (tf->lbam << 8) |
2177 (tf->lbah << 16) |
2178 (tf->device << 24)
2179 );
2180 crqb->ata_cmd[2] = cpu_to_le32(
2181 (tf->hob_lbal << 0) |
2182 (tf->hob_lbam << 8) |
2183 (tf->hob_lbah << 16) |
2184 (tf->hob_feature << 24)
2185 );
2186 crqb->ata_cmd[3] = cpu_to_le32(
2187 (tf->nsect << 0) |
2188 (tf->hob_nsect << 8)
2189 );
2190
2191 if (!(qc->flags & ATA_QCFLAG_DMAMAP))
2192 return;
Brett Russ31961942005-09-30 01:36:00 -04002193 mv_fill_sg(qc);
2194}
2195
Brett Russ05b308e2005-10-05 17:08:53 -04002196/**
Mark Lordd16ab3f2009-02-25 15:17:43 -05002197 * mv_sff_check_status - fetch device status, if valid
2198 * @ap: ATA port to fetch status from
2199 *
2200 * When using command issue via mv_qc_issue_fis(),
2201 * the initial ATA_BUSY state does not show up in the
2202 * ATA status (shadow) register. This can confuse libata!
2203 *
2204 * So we have a hook here to fake ATA_BUSY for that situation,
2205 * until the first time a BUSY, DRQ, or ERR bit is seen.
2206 *
2207 * The rest of the time, it simply returns the ATA status register.
2208 */
2209static u8 mv_sff_check_status(struct ata_port *ap)
2210{
2211 u8 stat = ioread8(ap->ioaddr.status_addr);
2212 struct mv_port_priv *pp = ap->private_data;
2213
2214 if (pp->pp_flags & MV_PP_FLAG_FAKE_ATA_BUSY) {
2215 if (stat & (ATA_BUSY | ATA_DRQ | ATA_ERR))
2216 pp->pp_flags &= ~MV_PP_FLAG_FAKE_ATA_BUSY;
2217 else
2218 stat = ATA_BUSY;
2219 }
2220 return stat;
2221}
2222
2223/**
Mark Lord70f8b792009-02-25 15:19:20 -05002224 * mv_send_fis - Send a FIS, using the "Vendor-Unique FIS" register
2225 * @fis: fis to be sent
2226 * @nwords: number of 32-bit words in the fis
2227 */
2228static unsigned int mv_send_fis(struct ata_port *ap, u32 *fis, int nwords)
2229{
2230 void __iomem *port_mmio = mv_ap_base(ap);
2231 u32 ifctl, old_ifctl, ifstat;
2232 int i, timeout = 200, final_word = nwords - 1;
2233
2234 /* Initiate FIS transmission mode */
Mark Lordcae5a292009-04-06 16:43:45 -04002235 old_ifctl = readl(port_mmio + SATA_IFCTL);
Mark Lord70f8b792009-02-25 15:19:20 -05002236 ifctl = 0x100 | (old_ifctl & 0xf);
Mark Lordcae5a292009-04-06 16:43:45 -04002237 writelfl(ifctl, port_mmio + SATA_IFCTL);
Mark Lord70f8b792009-02-25 15:19:20 -05002238
2239 /* Send all words of the FIS except for the final word */
2240 for (i = 0; i < final_word; ++i)
Mark Lordcae5a292009-04-06 16:43:45 -04002241 writel(fis[i], port_mmio + VENDOR_UNIQUE_FIS);
Mark Lord70f8b792009-02-25 15:19:20 -05002242
2243 /* Flag end-of-transmission, and then send the final word */
Mark Lordcae5a292009-04-06 16:43:45 -04002244 writelfl(ifctl | 0x200, port_mmio + SATA_IFCTL);
2245 writelfl(fis[final_word], port_mmio + VENDOR_UNIQUE_FIS);
Mark Lord70f8b792009-02-25 15:19:20 -05002246
2247 /*
2248 * Wait for FIS transmission to complete.
2249 * This typically takes just a single iteration.
2250 */
2251 do {
Mark Lordcae5a292009-04-06 16:43:45 -04002252 ifstat = readl(port_mmio + SATA_IFSTAT);
Mark Lord70f8b792009-02-25 15:19:20 -05002253 } while (!(ifstat & 0x1000) && --timeout);
2254
2255 /* Restore original port configuration */
Mark Lordcae5a292009-04-06 16:43:45 -04002256 writelfl(old_ifctl, port_mmio + SATA_IFCTL);
Mark Lord70f8b792009-02-25 15:19:20 -05002257
2258 /* See if it worked */
2259 if ((ifstat & 0x3000) != 0x1000) {
Joe Perchesa9a79df2011-04-15 15:51:59 -07002260 ata_port_warn(ap, "%s transmission error, ifstat=%08x\n",
2261 __func__, ifstat);
Mark Lord70f8b792009-02-25 15:19:20 -05002262 return AC_ERR_OTHER;
2263 }
2264 return 0;
2265}
2266
2267/**
2268 * mv_qc_issue_fis - Issue a command directly as a FIS
2269 * @qc: queued command to start
2270 *
2271 * Note that the ATA shadow registers are not updated
2272 * after command issue, so the device will appear "READY"
2273 * if polled, even while it is BUSY processing the command.
2274 *
2275 * So we use a status hook to fake ATA_BUSY until the drive changes state.
2276 *
2277 * Note: we don't get updated shadow regs on *completion*
2278 * of non-data commands. So avoid sending them via this function,
2279 * as they will appear to have completed immediately.
2280 *
2281 * GEN_IIE has special registers that we could get the result tf from,
2282 * but earlier chipsets do not. For now, we ignore those registers.
2283 */
2284static unsigned int mv_qc_issue_fis(struct ata_queued_cmd *qc)
2285{
2286 struct ata_port *ap = qc->ap;
2287 struct mv_port_priv *pp = ap->private_data;
2288 struct ata_link *link = qc->dev->link;
2289 u32 fis[5];
2290 int err = 0;
2291
2292 ata_tf_to_fis(&qc->tf, link->pmp, 1, (void *)fis);
Thiago Farina4c4a90f2009-11-08 14:30:57 -05002293 err = mv_send_fis(ap, fis, ARRAY_SIZE(fis));
Mark Lord70f8b792009-02-25 15:19:20 -05002294 if (err)
2295 return err;
2296
2297 switch (qc->tf.protocol) {
2298 case ATAPI_PROT_PIO:
2299 pp->pp_flags |= MV_PP_FLAG_FAKE_ATA_BUSY;
2300 /* fall through */
2301 case ATAPI_PROT_NODATA:
2302 ap->hsm_task_state = HSM_ST_FIRST;
2303 break;
2304 case ATA_PROT_PIO:
2305 pp->pp_flags |= MV_PP_FLAG_FAKE_ATA_BUSY;
2306 if (qc->tf.flags & ATA_TFLAG_WRITE)
2307 ap->hsm_task_state = HSM_ST_FIRST;
2308 else
2309 ap->hsm_task_state = HSM_ST;
2310 break;
2311 default:
2312 ap->hsm_task_state = HSM_ST_LAST;
2313 break;
2314 }
2315
2316 if (qc->tf.flags & ATA_TFLAG_POLLING)
Gwendal Grignouea3c6452010-08-31 16:20:36 -07002317 ata_sff_queue_pio_task(link, 0);
Mark Lord70f8b792009-02-25 15:19:20 -05002318 return 0;
2319}
2320
2321/**
Brett Russ05b308e2005-10-05 17:08:53 -04002322 * mv_qc_issue - Initiate a command to the host
2323 * @qc: queued command to start
2324 *
2325 * This routine simply redirects to the general purpose routine
2326 * if command is not DMA. Else, it sanity checks our local
2327 * caches of the request producer/consumer indices then enables
2328 * DMA and bumps the request producer index.
2329 *
2330 * LOCKING:
2331 * Inherited from caller.
2332 */
Tejun Heo9a3d9eb2006-01-23 13:09:36 +09002333static unsigned int mv_qc_issue(struct ata_queued_cmd *qc)
Brett Russ31961942005-09-30 01:36:00 -04002334{
Mark Lordf48765c2009-01-30 18:48:41 -05002335 static int limit_warnings = 10;
Jeff Garzikc5d3e452007-07-11 18:30:50 -04002336 struct ata_port *ap = qc->ap;
2337 void __iomem *port_mmio = mv_ap_base(ap);
2338 struct mv_port_priv *pp = ap->private_data;
Jeff Garzikbdd4ddd2007-07-12 14:34:26 -04002339 u32 in_index;
Mark Lord42ed8932009-02-25 15:15:39 -05002340 unsigned int port_irqs;
Brett Russ31961942005-09-30 01:36:00 -04002341
Mark Lordd16ab3f2009-02-25 15:17:43 -05002342 pp->pp_flags &= ~MV_PP_FLAG_FAKE_ATA_BUSY; /* paranoia */
2343
Mark Lordf48765c2009-01-30 18:48:41 -05002344 switch (qc->tf.protocol) {
2345 case ATA_PROT_DMA:
Mark Lord44b73382010-08-19 21:40:44 -04002346 if (qc->tf.command == ATA_CMD_DSM) {
2347 if (!ap->ops->bmdma_setup) /* no bmdma on GEN_I */
2348 return AC_ERR_OTHER;
2349 break; /* use bmdma for this */
2350 }
2351 /* fall thru */
Mark Lordf48765c2009-01-30 18:48:41 -05002352 case ATA_PROT_NCQ:
2353 mv_start_edma(ap, port_mmio, pp, qc->tf.protocol);
2354 pp->req_idx = (pp->req_idx + 1) & MV_MAX_Q_DEPTH_MASK;
2355 in_index = pp->req_idx << EDMA_REQ_Q_PTR_SHIFT;
2356
2357 /* Write the request in pointer to kick the EDMA to life */
2358 writelfl((pp->crqb_dma & EDMA_REQ_Q_BASE_LO_MASK) | in_index,
Mark Lordcae5a292009-04-06 16:43:45 -04002359 port_mmio + EDMA_REQ_Q_IN_PTR);
Mark Lordf48765c2009-01-30 18:48:41 -05002360 return 0;
2361
2362 case ATA_PROT_PIO:
Mark Lordc6112bd2008-06-18 12:13:02 -04002363 /*
2364 * Errata SATA#16, SATA#24: warn if multiple DRQs expected.
2365 *
2366 * Someday, we might implement special polling workarounds
2367 * for these, but it all seems rather unnecessary since we
2368 * normally use only DMA for commands which transfer more
2369 * than a single block of data.
2370 *
2371 * Much of the time, this could just work regardless.
2372 * So for now, just log the incident, and allow the attempt.
2373 */
Mark Lordc7843e82008-06-18 21:57:42 -04002374 if (limit_warnings > 0 && (qc->nbytes / qc->sect_size) > 1) {
Mark Lordc6112bd2008-06-18 12:13:02 -04002375 --limit_warnings;
Joe Perchesa9a79df2011-04-15 15:51:59 -07002376 ata_link_warn(qc->dev->link, DRV_NAME
2377 ": attempting PIO w/multiple DRQ: "
2378 "this may fail due to h/w errata\n");
Mark Lordc6112bd2008-06-18 12:13:02 -04002379 }
Mark Lordf48765c2009-01-30 18:48:41 -05002380 /* drop through */
Mark Lord42ed8932009-02-25 15:15:39 -05002381 case ATA_PROT_NODATA:
Mark Lordf48765c2009-01-30 18:48:41 -05002382 case ATAPI_PROT_PIO:
Mark Lord42ed8932009-02-25 15:15:39 -05002383 case ATAPI_PROT_NODATA:
2384 if (ap->flags & ATA_FLAG_PIO_POLLING)
2385 qc->tf.flags |= ATA_TFLAG_POLLING;
2386 break;
Brett Russ31961942005-09-30 01:36:00 -04002387 }
Mark Lord42ed8932009-02-25 15:15:39 -05002388
2389 if (qc->tf.flags & ATA_TFLAG_POLLING)
2390 port_irqs = ERR_IRQ; /* mask device interrupt when polling */
2391 else
2392 port_irqs = ERR_IRQ | DONE_IRQ; /* unmask all interrupts */
2393
2394 /*
2395 * We're about to send a non-EDMA capable command to the
2396 * port. Turn off EDMA so there won't be problems accessing
2397 * shadow block, etc registers.
2398 */
2399 mv_stop_edma(ap);
2400 mv_clear_and_enable_port_irqs(ap, mv_ap_base(ap), port_irqs);
2401 mv_pmp_select(ap, qc->dev->link->pmp);
Mark Lord70f8b792009-02-25 15:19:20 -05002402
2403 if (qc->tf.command == ATA_CMD_READ_LOG_EXT) {
2404 struct mv_host_priv *hpriv = ap->host->private_data;
2405 /*
2406 * Workaround for 88SX60x1 FEr SATA#25 (part 2).
Mark Lord40f21b12009-03-10 18:51:04 -04002407 *
Mark Lord70f8b792009-02-25 15:19:20 -05002408 * After any NCQ error, the READ_LOG_EXT command
2409 * from libata-eh *must* use mv_qc_issue_fis().
2410 * Otherwise it might fail, due to chip errata.
2411 *
2412 * Rather than special-case it, we'll just *always*
2413 * use this method here for READ_LOG_EXT, making for
2414 * easier testing.
2415 */
2416 if (IS_GEN_II(hpriv))
2417 return mv_qc_issue_fis(qc);
2418 }
Tejun Heo360ff782010-05-10 21:41:42 +02002419 return ata_bmdma_qc_issue(qc);
Brett Russ31961942005-09-30 01:36:00 -04002420}
2421
Mark Lord8f767f82008-04-19 14:53:07 -04002422static struct ata_queued_cmd *mv_get_active_qc(struct ata_port *ap)
2423{
2424 struct mv_port_priv *pp = ap->private_data;
2425 struct ata_queued_cmd *qc;
2426
2427 if (pp->pp_flags & MV_PP_FLAG_NCQ_EN)
2428 return NULL;
2429 qc = ata_qc_from_tag(ap, ap->link.active_tag);
Tejun Heo3e4ec342010-05-10 21:41:30 +02002430 if (qc && !(qc->tf.flags & ATA_TFLAG_POLLING))
2431 return qc;
2432 return NULL;
Mark Lord8f767f82008-04-19 14:53:07 -04002433}
2434
Mark Lord29d187b2008-05-02 02:15:37 -04002435static void mv_pmp_error_handler(struct ata_port *ap)
2436{
2437 unsigned int pmp, pmp_map;
2438 struct mv_port_priv *pp = ap->private_data;
2439
2440 if (pp->pp_flags & MV_PP_FLAG_DELAYED_EH) {
2441 /*
2442 * Perform NCQ error analysis on failed PMPs
2443 * before we freeze the port entirely.
2444 *
2445 * The failed PMPs are marked earlier by mv_pmp_eh_prep().
2446 */
2447 pmp_map = pp->delayed_eh_pmp_map;
2448 pp->pp_flags &= ~MV_PP_FLAG_DELAYED_EH;
2449 for (pmp = 0; pmp_map != 0; pmp++) {
2450 unsigned int this_pmp = (1 << pmp);
2451 if (pmp_map & this_pmp) {
2452 struct ata_link *link = &ap->pmp_link[pmp];
2453 pmp_map &= ~this_pmp;
2454 ata_eh_analyze_ncq_error(link);
2455 }
2456 }
2457 ata_port_freeze(ap);
2458 }
2459 sata_pmp_error_handler(ap);
2460}
2461
Mark Lord4c299ca2008-05-02 02:16:20 -04002462static unsigned int mv_get_err_pmp_map(struct ata_port *ap)
2463{
2464 void __iomem *port_mmio = mv_ap_base(ap);
2465
Mark Lordcae5a292009-04-06 16:43:45 -04002466 return readl(port_mmio + SATA_TESTCTL) >> 16;
Mark Lord4c299ca2008-05-02 02:16:20 -04002467}
2468
Mark Lord4c299ca2008-05-02 02:16:20 -04002469static void mv_pmp_eh_prep(struct ata_port *ap, unsigned int pmp_map)
2470{
2471 struct ata_eh_info *ehi;
2472 unsigned int pmp;
2473
2474 /*
2475 * Initialize EH info for PMPs which saw device errors
2476 */
2477 ehi = &ap->link.eh_info;
2478 for (pmp = 0; pmp_map != 0; pmp++) {
2479 unsigned int this_pmp = (1 << pmp);
2480 if (pmp_map & this_pmp) {
2481 struct ata_link *link = &ap->pmp_link[pmp];
2482
2483 pmp_map &= ~this_pmp;
2484 ehi = &link->eh_info;
2485 ata_ehi_clear_desc(ehi);
2486 ata_ehi_push_desc(ehi, "dev err");
2487 ehi->err_mask |= AC_ERR_DEV;
2488 ehi->action |= ATA_EH_RESET;
2489 ata_link_abort(link);
2490 }
2491 }
2492}
2493
Mark Lord06aaca32008-05-19 09:01:24 -04002494static int mv_req_q_empty(struct ata_port *ap)
2495{
2496 void __iomem *port_mmio = mv_ap_base(ap);
2497 u32 in_ptr, out_ptr;
2498
Mark Lordcae5a292009-04-06 16:43:45 -04002499 in_ptr = (readl(port_mmio + EDMA_REQ_Q_IN_PTR)
Mark Lord06aaca32008-05-19 09:01:24 -04002500 >> EDMA_REQ_Q_PTR_SHIFT) & MV_MAX_Q_DEPTH_MASK;
Mark Lordcae5a292009-04-06 16:43:45 -04002501 out_ptr = (readl(port_mmio + EDMA_REQ_Q_OUT_PTR)
Mark Lord06aaca32008-05-19 09:01:24 -04002502 >> EDMA_REQ_Q_PTR_SHIFT) & MV_MAX_Q_DEPTH_MASK;
2503 return (in_ptr == out_ptr); /* 1 == queue_is_empty */
2504}
2505
Mark Lord4c299ca2008-05-02 02:16:20 -04002506static int mv_handle_fbs_ncq_dev_err(struct ata_port *ap)
2507{
2508 struct mv_port_priv *pp = ap->private_data;
2509 int failed_links;
2510 unsigned int old_map, new_map;
2511
2512 /*
2513 * Device error during FBS+NCQ operation:
2514 *
2515 * Set a port flag to prevent further I/O being enqueued.
2516 * Leave the EDMA running to drain outstanding commands from this port.
2517 * Perform the post-mortem/EH only when all responses are complete.
2518 * Follow recovery sequence from 6042/7042 datasheet (7.3.15.4.2.2).
2519 */
2520 if (!(pp->pp_flags & MV_PP_FLAG_DELAYED_EH)) {
2521 pp->pp_flags |= MV_PP_FLAG_DELAYED_EH;
2522 pp->delayed_eh_pmp_map = 0;
2523 }
2524 old_map = pp->delayed_eh_pmp_map;
2525 new_map = old_map | mv_get_err_pmp_map(ap);
2526
2527 if (old_map != new_map) {
2528 pp->delayed_eh_pmp_map = new_map;
2529 mv_pmp_eh_prep(ap, new_map & ~old_map);
2530 }
Mark Lordc46938c2008-05-02 14:02:28 -04002531 failed_links = hweight16(new_map);
Mark Lord4c299ca2008-05-02 02:16:20 -04002532
Joe Perchesa9a79df2011-04-15 15:51:59 -07002533 ata_port_info(ap,
2534 "%s: pmp_map=%04x qc_map=%04x failed_links=%d nr_active_links=%d\n",
2535 __func__, pp->delayed_eh_pmp_map,
2536 ap->qc_active, failed_links,
2537 ap->nr_active_links);
Mark Lord4c299ca2008-05-02 02:16:20 -04002538
Mark Lord06aaca32008-05-19 09:01:24 -04002539 if (ap->nr_active_links <= failed_links && mv_req_q_empty(ap)) {
Mark Lord4c299ca2008-05-02 02:16:20 -04002540 mv_process_crpb_entries(ap, pp);
2541 mv_stop_edma(ap);
2542 mv_eh_freeze(ap);
Joe Perchesa9a79df2011-04-15 15:51:59 -07002543 ata_port_info(ap, "%s: done\n", __func__);
Mark Lord4c299ca2008-05-02 02:16:20 -04002544 return 1; /* handled */
2545 }
Joe Perchesa9a79df2011-04-15 15:51:59 -07002546 ata_port_info(ap, "%s: waiting\n", __func__);
Mark Lord4c299ca2008-05-02 02:16:20 -04002547 return 1; /* handled */
2548}
2549
2550static int mv_handle_fbs_non_ncq_dev_err(struct ata_port *ap)
2551{
2552 /*
2553 * Possible future enhancement:
2554 *
2555 * FBS+non-NCQ operation is not yet implemented.
2556 * See related notes in mv_edma_cfg().
2557 *
2558 * Device error during FBS+non-NCQ operation:
2559 *
2560 * We need to snapshot the shadow registers for each failed command.
2561 * Follow recovery sequence from 6042/7042 datasheet (7.3.15.4.2.3).
2562 */
2563 return 0; /* not handled */
2564}
2565
2566static int mv_handle_dev_err(struct ata_port *ap, u32 edma_err_cause)
2567{
2568 struct mv_port_priv *pp = ap->private_data;
2569
2570 if (!(pp->pp_flags & MV_PP_FLAG_EDMA_EN))
2571 return 0; /* EDMA was not active: not handled */
2572 if (!(pp->pp_flags & MV_PP_FLAG_FBS_EN))
2573 return 0; /* FBS was not active: not handled */
2574
2575 if (!(edma_err_cause & EDMA_ERR_DEV))
2576 return 0; /* non DEV error: not handled */
2577 edma_err_cause &= ~EDMA_ERR_IRQ_TRANSIENT;
2578 if (edma_err_cause & ~(EDMA_ERR_DEV | EDMA_ERR_SELF_DIS))
2579 return 0; /* other problems: not handled */
2580
2581 if (pp->pp_flags & MV_PP_FLAG_NCQ_EN) {
2582 /*
2583 * EDMA should NOT have self-disabled for this case.
2584 * If it did, then something is wrong elsewhere,
2585 * and we cannot handle it here.
2586 */
2587 if (edma_err_cause & EDMA_ERR_SELF_DIS) {
Joe Perchesa9a79df2011-04-15 15:51:59 -07002588 ata_port_warn(ap, "%s: err_cause=0x%x pp_flags=0x%x\n",
2589 __func__, edma_err_cause, pp->pp_flags);
Mark Lord4c299ca2008-05-02 02:16:20 -04002590 return 0; /* not handled */
2591 }
2592 return mv_handle_fbs_ncq_dev_err(ap);
2593 } else {
2594 /*
2595 * EDMA should have self-disabled for this case.
2596 * If it did not, then something is wrong elsewhere,
2597 * and we cannot handle it here.
2598 */
2599 if (!(edma_err_cause & EDMA_ERR_SELF_DIS)) {
Joe Perchesa9a79df2011-04-15 15:51:59 -07002600 ata_port_warn(ap, "%s: err_cause=0x%x pp_flags=0x%x\n",
2601 __func__, edma_err_cause, pp->pp_flags);
Mark Lord4c299ca2008-05-02 02:16:20 -04002602 return 0; /* not handled */
2603 }
2604 return mv_handle_fbs_non_ncq_dev_err(ap);
2605 }
2606 return 0; /* not handled */
2607}
2608
Mark Lorda9010322008-05-02 02:14:02 -04002609static void mv_unexpected_intr(struct ata_port *ap, int edma_was_enabled)
Mark Lord8f767f82008-04-19 14:53:07 -04002610{
Mark Lord8f767f82008-04-19 14:53:07 -04002611 struct ata_eh_info *ehi = &ap->link.eh_info;
Mark Lorda9010322008-05-02 02:14:02 -04002612 char *when = "idle";
Mark Lord8f767f82008-04-19 14:53:07 -04002613
Mark Lord8f767f82008-04-19 14:53:07 -04002614 ata_ehi_clear_desc(ehi);
Tejun Heo3e4ec342010-05-10 21:41:30 +02002615 if (edma_was_enabled) {
Mark Lorda9010322008-05-02 02:14:02 -04002616 when = "EDMA enabled";
Mark Lord8f767f82008-04-19 14:53:07 -04002617 } else {
2618 struct ata_queued_cmd *qc = ata_qc_from_tag(ap, ap->link.active_tag);
2619 if (qc && (qc->tf.flags & ATA_TFLAG_POLLING))
Mark Lorda9010322008-05-02 02:14:02 -04002620 when = "polling";
Mark Lord8f767f82008-04-19 14:53:07 -04002621 }
Mark Lorda9010322008-05-02 02:14:02 -04002622 ata_ehi_push_desc(ehi, "unexpected device interrupt while %s", when);
Mark Lord8f767f82008-04-19 14:53:07 -04002623 ehi->err_mask |= AC_ERR_OTHER;
2624 ehi->action |= ATA_EH_RESET;
2625 ata_port_freeze(ap);
2626}
2627
Brett Russ05b308e2005-10-05 17:08:53 -04002628/**
Brett Russ05b308e2005-10-05 17:08:53 -04002629 * mv_err_intr - Handle error interrupts on the port
2630 * @ap: ATA channel to manipulate
2631 *
Mark Lord8d073792008-04-19 15:07:49 -04002632 * Most cases require a full reset of the chip's state machine,
2633 * which also performs a COMRESET.
2634 * Also, if the port disabled DMA, update our cached copy to match.
Brett Russ05b308e2005-10-05 17:08:53 -04002635 *
2636 * LOCKING:
2637 * Inherited from caller.
2638 */
Mark Lord37b90462008-05-02 02:12:34 -04002639static void mv_err_intr(struct ata_port *ap)
Brett Russ20f733e2005-09-01 18:26:17 -04002640{
Brett Russ31961942005-09-30 01:36:00 -04002641 void __iomem *port_mmio = mv_ap_base(ap);
Jeff Garzikbdd4ddd2007-07-12 14:34:26 -04002642 u32 edma_err_cause, eh_freeze_mask, serr = 0;
Mark Lorde4006072008-05-14 09:19:30 -04002643 u32 fis_cause = 0;
Jeff Garzikbdd4ddd2007-07-12 14:34:26 -04002644 struct mv_port_priv *pp = ap->private_data;
2645 struct mv_host_priv *hpriv = ap->host->private_data;
Jeff Garzikbdd4ddd2007-07-12 14:34:26 -04002646 unsigned int action = 0, err_mask = 0;
Tejun Heo9af5c9c2007-08-06 18:36:22 +09002647 struct ata_eh_info *ehi = &ap->link.eh_info;
Mark Lord37b90462008-05-02 02:12:34 -04002648 struct ata_queued_cmd *qc;
2649 int abort = 0;
Brett Russ20f733e2005-09-01 18:26:17 -04002650
Mark Lord8d073792008-04-19 15:07:49 -04002651 /*
Mark Lord37b90462008-05-02 02:12:34 -04002652 * Read and clear the SError and err_cause bits.
Mark Lorde4006072008-05-14 09:19:30 -04002653 * For GenIIe, if EDMA_ERR_TRANS_IRQ_7 is set, we also must read/clear
2654 * the FIS_IRQ_CAUSE register before clearing edma_err_cause.
Mark Lord8d073792008-04-19 15:07:49 -04002655 */
Mark Lord37b90462008-05-02 02:12:34 -04002656 sata_scr_read(&ap->link, SCR_ERROR, &serr);
2657 sata_scr_write_flush(&ap->link, SCR_ERROR, serr);
2658
Mark Lordcae5a292009-04-06 16:43:45 -04002659 edma_err_cause = readl(port_mmio + EDMA_ERR_IRQ_CAUSE);
Mark Lorde4006072008-05-14 09:19:30 -04002660 if (IS_GEN_IIE(hpriv) && (edma_err_cause & EDMA_ERR_TRANS_IRQ_7)) {
Mark Lordcae5a292009-04-06 16:43:45 -04002661 fis_cause = readl(port_mmio + FIS_IRQ_CAUSE);
2662 writelfl(~fis_cause, port_mmio + FIS_IRQ_CAUSE);
Mark Lorde4006072008-05-14 09:19:30 -04002663 }
Mark Lordcae5a292009-04-06 16:43:45 -04002664 writelfl(~edma_err_cause, port_mmio + EDMA_ERR_IRQ_CAUSE);
Jeff Garzikbdd4ddd2007-07-12 14:34:26 -04002665
Mark Lord4c299ca2008-05-02 02:16:20 -04002666 if (edma_err_cause & EDMA_ERR_DEV) {
2667 /*
2668 * Device errors during FIS-based switching operation
2669 * require special handling.
2670 */
2671 if (mv_handle_dev_err(ap, edma_err_cause))
2672 return;
2673 }
2674
Mark Lord37b90462008-05-02 02:12:34 -04002675 qc = mv_get_active_qc(ap);
2676 ata_ehi_clear_desc(ehi);
2677 ata_ehi_push_desc(ehi, "edma_err_cause=%08x pp_flags=%08x",
2678 edma_err_cause, pp->pp_flags);
Mark Lorde4006072008-05-14 09:19:30 -04002679
Mark Lordc443c502008-05-14 09:24:39 -04002680 if (IS_GEN_IIE(hpriv) && (edma_err_cause & EDMA_ERR_TRANS_IRQ_7)) {
Mark Lorde4006072008-05-14 09:19:30 -04002681 ata_ehi_push_desc(ehi, "fis_cause=%08x", fis_cause);
Mark Lordcae5a292009-04-06 16:43:45 -04002682 if (fis_cause & FIS_IRQ_CAUSE_AN) {
Mark Lordc443c502008-05-14 09:24:39 -04002683 u32 ec = edma_err_cause &
2684 ~(EDMA_ERR_TRANS_IRQ_7 | EDMA_ERR_IRQ_TRANSIENT);
2685 sata_async_notification(ap);
2686 if (!ec)
2687 return; /* Just an AN; no need for the nukes */
2688 ata_ehi_push_desc(ehi, "SDB notify");
2689 }
2690 }
Jeff Garzikbdd4ddd2007-07-12 14:34:26 -04002691 /*
Mark Lord352fab72008-04-19 14:43:42 -04002692 * All generations share these EDMA error cause bits:
Jeff Garzikbdd4ddd2007-07-12 14:34:26 -04002693 */
Mark Lord37b90462008-05-02 02:12:34 -04002694 if (edma_err_cause & EDMA_ERR_DEV) {
Jeff Garzikbdd4ddd2007-07-12 14:34:26 -04002695 err_mask |= AC_ERR_DEV;
Mark Lord37b90462008-05-02 02:12:34 -04002696 action |= ATA_EH_RESET;
2697 ata_ehi_push_desc(ehi, "dev error");
2698 }
Jeff Garzikbdd4ddd2007-07-12 14:34:26 -04002699 if (edma_err_cause & (EDMA_ERR_D_PAR | EDMA_ERR_PRD_PAR |
Jeff Garzik6c1153e2007-07-13 15:20:15 -04002700 EDMA_ERR_CRQB_PAR | EDMA_ERR_CRPB_PAR |
Jeff Garzikbdd4ddd2007-07-12 14:34:26 -04002701 EDMA_ERR_INTRL_PAR)) {
2702 err_mask |= AC_ERR_ATA_BUS;
Tejun Heocf480622008-01-24 00:05:14 +09002703 action |= ATA_EH_RESET;
Tejun Heob64bbc32007-07-16 14:29:39 +09002704 ata_ehi_push_desc(ehi, "parity error");
Brett Russafb0edd2005-10-05 17:08:42 -04002705 }
Jeff Garzikbdd4ddd2007-07-12 14:34:26 -04002706 if (edma_err_cause & (EDMA_ERR_DEV_DCON | EDMA_ERR_DEV_CON)) {
2707 ata_ehi_hotplugged(ehi);
2708 ata_ehi_push_desc(ehi, edma_err_cause & EDMA_ERR_DEV_DCON ?
Tejun Heob64bbc32007-07-16 14:29:39 +09002709 "dev disconnect" : "dev connect");
Tejun Heocf480622008-01-24 00:05:14 +09002710 action |= ATA_EH_RESET;
Jeff Garzikbdd4ddd2007-07-12 14:34:26 -04002711 }
2712
Mark Lord352fab72008-04-19 14:43:42 -04002713 /*
2714 * Gen-I has a different SELF_DIS bit,
2715 * different FREEZE bits, and no SERR bit:
2716 */
Jeff Garzikee9ccdf2007-07-12 15:51:22 -04002717 if (IS_GEN_I(hpriv)) {
Jeff Garzikbdd4ddd2007-07-12 14:34:26 -04002718 eh_freeze_mask = EDMA_EH_FREEZE_5;
Jeff Garzikbdd4ddd2007-07-12 14:34:26 -04002719 if (edma_err_cause & EDMA_ERR_SELF_DIS_5) {
Jeff Garzikbdd4ddd2007-07-12 14:34:26 -04002720 pp->pp_flags &= ~MV_PP_FLAG_EDMA_EN;
Tejun Heob64bbc32007-07-16 14:29:39 +09002721 ata_ehi_push_desc(ehi, "EDMA self-disable");
Jeff Garzikbdd4ddd2007-07-12 14:34:26 -04002722 }
2723 } else {
2724 eh_freeze_mask = EDMA_EH_FREEZE;
Jeff Garzikbdd4ddd2007-07-12 14:34:26 -04002725 if (edma_err_cause & EDMA_ERR_SELF_DIS) {
Jeff Garzikbdd4ddd2007-07-12 14:34:26 -04002726 pp->pp_flags &= ~MV_PP_FLAG_EDMA_EN;
Tejun Heob64bbc32007-07-16 14:29:39 +09002727 ata_ehi_push_desc(ehi, "EDMA self-disable");
Jeff Garzikbdd4ddd2007-07-12 14:34:26 -04002728 }
Jeff Garzikbdd4ddd2007-07-12 14:34:26 -04002729 if (edma_err_cause & EDMA_ERR_SERR) {
Mark Lord8d073792008-04-19 15:07:49 -04002730 ata_ehi_push_desc(ehi, "SError=%08x", serr);
2731 err_mask |= AC_ERR_ATA_BUS;
Tejun Heocf480622008-01-24 00:05:14 +09002732 action |= ATA_EH_RESET;
Jeff Garzikbdd4ddd2007-07-12 14:34:26 -04002733 }
2734 }
Brett Russ20f733e2005-09-01 18:26:17 -04002735
Jeff Garzikbdd4ddd2007-07-12 14:34:26 -04002736 if (!err_mask) {
2737 err_mask = AC_ERR_OTHER;
Tejun Heocf480622008-01-24 00:05:14 +09002738 action |= ATA_EH_RESET;
Jeff Garzikbdd4ddd2007-07-12 14:34:26 -04002739 }
2740
2741 ehi->serror |= serr;
2742 ehi->action |= action;
2743
2744 if (qc)
2745 qc->err_mask |= err_mask;
2746 else
2747 ehi->err_mask |= err_mask;
2748
Mark Lord37b90462008-05-02 02:12:34 -04002749 if (err_mask == AC_ERR_DEV) {
2750 /*
2751 * Cannot do ata_port_freeze() here,
2752 * because it would kill PIO access,
2753 * which is needed for further diagnosis.
2754 */
2755 mv_eh_freeze(ap);
2756 abort = 1;
2757 } else if (edma_err_cause & eh_freeze_mask) {
2758 /*
2759 * Note to self: ata_port_freeze() calls ata_port_abort()
2760 */
Jeff Garzikbdd4ddd2007-07-12 14:34:26 -04002761 ata_port_freeze(ap);
Mark Lord37b90462008-05-02 02:12:34 -04002762 } else {
2763 abort = 1;
2764 }
2765
2766 if (abort) {
2767 if (qc)
2768 ata_link_abort(qc->dev->link);
2769 else
2770 ata_port_abort(ap);
2771 }
Jeff Garzikbdd4ddd2007-07-12 14:34:26 -04002772}
2773
Tejun Heo1aadf5c2010-06-25 15:03:34 +02002774static bool mv_process_crpb_response(struct ata_port *ap,
Mark Lordfcfb1f72008-04-19 15:06:40 -04002775 struct mv_crpb *response, unsigned int tag, int ncq_enabled)
2776{
Tejun Heo752e3862010-06-25 15:02:59 +02002777 u8 ata_status;
2778 u16 edma_status = le16_to_cpu(response->flags);
Tejun Heo752e3862010-06-25 15:02:59 +02002779
2780 /*
2781 * edma_status from a response queue entry:
2782 * LSB is from EDMA_ERR_IRQ_CAUSE (non-NCQ only).
2783 * MSB is saved ATA status from command completion.
2784 */
2785 if (!ncq_enabled) {
2786 u8 err_cause = edma_status & 0xff & ~EDMA_ERR_DEV;
2787 if (err_cause) {
2788 /*
2789 * Error will be seen/handled by
2790 * mv_err_intr(). So do nothing at all here.
2791 */
Tejun Heo1aadf5c2010-06-25 15:03:34 +02002792 return false;
Tejun Heo752e3862010-06-25 15:02:59 +02002793 }
2794 }
2795 ata_status = edma_status >> CRPB_FLAG_STATUS_SHIFT;
2796 if (!ac_err_mask(ata_status))
Tejun Heo1aadf5c2010-06-25 15:03:34 +02002797 return true;
Tejun Heo752e3862010-06-25 15:02:59 +02002798 /* else: leave it for mv_err_intr() */
Tejun Heo1aadf5c2010-06-25 15:03:34 +02002799 return false;
Mark Lordfcfb1f72008-04-19 15:06:40 -04002800}
2801
2802static void mv_process_crpb_entries(struct ata_port *ap, struct mv_port_priv *pp)
Jeff Garzikbdd4ddd2007-07-12 14:34:26 -04002803{
2804 void __iomem *port_mmio = mv_ap_base(ap);
2805 struct mv_host_priv *hpriv = ap->host->private_data;
Mark Lordfcfb1f72008-04-19 15:06:40 -04002806 u32 in_index;
Jeff Garzikbdd4ddd2007-07-12 14:34:26 -04002807 bool work_done = false;
Tejun Heo1aadf5c2010-06-25 15:03:34 +02002808 u32 done_mask = 0;
Mark Lordfcfb1f72008-04-19 15:06:40 -04002809 int ncq_enabled = (pp->pp_flags & MV_PP_FLAG_NCQ_EN);
Jeff Garzikbdd4ddd2007-07-12 14:34:26 -04002810
Mark Lordfcfb1f72008-04-19 15:06:40 -04002811 /* Get the hardware queue position index */
Mark Lordcae5a292009-04-06 16:43:45 -04002812 in_index = (readl(port_mmio + EDMA_RSP_Q_IN_PTR)
Jeff Garzikbdd4ddd2007-07-12 14:34:26 -04002813 >> EDMA_RSP_Q_PTR_SHIFT) & MV_MAX_Q_DEPTH_MASK;
2814
Mark Lordfcfb1f72008-04-19 15:06:40 -04002815 /* Process new responses from since the last time we looked */
2816 while (in_index != pp->resp_idx) {
Jeff Garzik6c1153e2007-07-13 15:20:15 -04002817 unsigned int tag;
Mark Lordfcfb1f72008-04-19 15:06:40 -04002818 struct mv_crpb *response = &pp->crpb[pp->resp_idx];
Jeff Garzikbdd4ddd2007-07-12 14:34:26 -04002819
Mark Lordfcfb1f72008-04-19 15:06:40 -04002820 pp->resp_idx = (pp->resp_idx + 1) & MV_MAX_Q_DEPTH_MASK;
Jeff Garzikbdd4ddd2007-07-12 14:34:26 -04002821
Mark Lordfcfb1f72008-04-19 15:06:40 -04002822 if (IS_GEN_I(hpriv)) {
2823 /* 50xx: no NCQ, only one command active at a time */
Tejun Heo9af5c9c2007-08-06 18:36:22 +09002824 tag = ap->link.active_tag;
Mark Lordfcfb1f72008-04-19 15:06:40 -04002825 } else {
2826 /* Gen II/IIE: get command tag from CRPB entry */
2827 tag = le16_to_cpu(response->id) & 0x1f;
Jeff Garzikbdd4ddd2007-07-12 14:34:26 -04002828 }
Tejun Heo1aadf5c2010-06-25 15:03:34 +02002829 if (mv_process_crpb_response(ap, response, tag, ncq_enabled))
2830 done_mask |= 1 << tag;
Jeff Garzikbdd4ddd2007-07-12 14:34:26 -04002831 work_done = true;
Jeff Garzikbdd4ddd2007-07-12 14:34:26 -04002832 }
2833
Tejun Heo1aadf5c2010-06-25 15:03:34 +02002834 if (work_done) {
2835 ata_qc_complete_multiple(ap, ap->qc_active ^ done_mask);
2836
2837 /* Update the software queue position index in hardware */
Jeff Garzikbdd4ddd2007-07-12 14:34:26 -04002838 writelfl((pp->crpb_dma & EDMA_RSP_Q_BASE_LO_MASK) |
Mark Lordfcfb1f72008-04-19 15:06:40 -04002839 (pp->resp_idx << EDMA_RSP_Q_PTR_SHIFT),
Mark Lordcae5a292009-04-06 16:43:45 -04002840 port_mmio + EDMA_RSP_Q_OUT_PTR);
Tejun Heo1aadf5c2010-06-25 15:03:34 +02002841 }
Brett Russ20f733e2005-09-01 18:26:17 -04002842}
2843
Mark Lorda9010322008-05-02 02:14:02 -04002844static void mv_port_intr(struct ata_port *ap, u32 port_cause)
2845{
2846 struct mv_port_priv *pp;
2847 int edma_was_enabled;
2848
Mark Lorda9010322008-05-02 02:14:02 -04002849 /*
2850 * Grab a snapshot of the EDMA_EN flag setting,
2851 * so that we have a consistent view for this port,
2852 * even if something we call of our routines changes it.
2853 */
2854 pp = ap->private_data;
2855 edma_was_enabled = (pp->pp_flags & MV_PP_FLAG_EDMA_EN);
2856 /*
2857 * Process completed CRPB response(s) before other events.
2858 */
2859 if (edma_was_enabled && (port_cause & DONE_IRQ)) {
2860 mv_process_crpb_entries(ap, pp);
Mark Lord4c299ca2008-05-02 02:16:20 -04002861 if (pp->pp_flags & MV_PP_FLAG_DELAYED_EH)
2862 mv_handle_fbs_ncq_dev_err(ap);
Mark Lorda9010322008-05-02 02:14:02 -04002863 }
2864 /*
2865 * Handle chip-reported errors, or continue on to handle PIO.
2866 */
2867 if (unlikely(port_cause & ERR_IRQ)) {
2868 mv_err_intr(ap);
2869 } else if (!edma_was_enabled) {
2870 struct ata_queued_cmd *qc = mv_get_active_qc(ap);
2871 if (qc)
Tejun Heoc3b28892010-05-19 22:10:21 +02002872 ata_bmdma_port_intr(ap, qc);
Mark Lorda9010322008-05-02 02:14:02 -04002873 else
2874 mv_unexpected_intr(ap, edma_was_enabled);
2875 }
2876}
2877
Brett Russ05b308e2005-10-05 17:08:53 -04002878/**
2879 * mv_host_intr - Handle all interrupts on the given host controller
Jeff Garzikcca39742006-08-24 03:19:22 -04002880 * @host: host specific structure
Mark Lord7368f912008-04-25 11:24:24 -04002881 * @main_irq_cause: Main interrupt cause register for the chip.
Brett Russ05b308e2005-10-05 17:08:53 -04002882 *
2883 * LOCKING:
2884 * Inherited from caller.
2885 */
Mark Lord7368f912008-04-25 11:24:24 -04002886static int mv_host_intr(struct ata_host *host, u32 main_irq_cause)
Brett Russ20f733e2005-09-01 18:26:17 -04002887{
Saeed Bisharaf351b2d2008-02-01 18:08:03 -05002888 struct mv_host_priv *hpriv = host->private_data;
Mark Lordeabd5eb2008-05-02 02:13:27 -04002889 void __iomem *mmio = hpriv->base, *hc_mmio;
Mark Lorda3718c12008-04-19 15:07:18 -04002890 unsigned int handled = 0, port;
Brett Russ20f733e2005-09-01 18:26:17 -04002891
Mark Lord2b748a02009-03-10 22:01:17 -04002892 /* If asserted, clear the "all ports" IRQ coalescing bit */
2893 if (main_irq_cause & ALL_PORTS_COAL_DONE)
Mark Lordcae5a292009-04-06 16:43:45 -04002894 writel(~ALL_PORTS_COAL_IRQ, mmio + IRQ_COAL_CAUSE);
Mark Lord2b748a02009-03-10 22:01:17 -04002895
Mark Lorda3718c12008-04-19 15:07:18 -04002896 for (port = 0; port < hpriv->n_ports; port++) {
Jeff Garzikcca39742006-08-24 03:19:22 -04002897 struct ata_port *ap = host->ports[port];
Mark Lordeabd5eb2008-05-02 02:13:27 -04002898 unsigned int p, shift, hardport, port_cause;
2899
Mark Lorda3718c12008-04-19 15:07:18 -04002900 MV_PORT_TO_SHIFT_AND_HARDPORT(port, shift, hardport);
Mark Lorda3718c12008-04-19 15:07:18 -04002901 /*
Mark Lordeabd5eb2008-05-02 02:13:27 -04002902 * Each hc within the host has its own hc_irq_cause register,
2903 * where the interrupting ports bits get ack'd.
Mark Lorda3718c12008-04-19 15:07:18 -04002904 */
Mark Lordeabd5eb2008-05-02 02:13:27 -04002905 if (hardport == 0) { /* first port on this hc ? */
2906 u32 hc_cause = (main_irq_cause >> shift) & HC0_IRQ_PEND;
2907 u32 port_mask, ack_irqs;
2908 /*
2909 * Skip this entire hc if nothing pending for any ports
2910 */
2911 if (!hc_cause) {
2912 port += MV_PORTS_PER_HC - 1;
2913 continue;
2914 }
2915 /*
2916 * We don't need/want to read the hc_irq_cause register,
2917 * because doing so hurts performance, and
2918 * main_irq_cause already gives us everything we need.
2919 *
2920 * But we do have to *write* to the hc_irq_cause to ack
2921 * the ports that we are handling this time through.
2922 *
2923 * This requires that we create a bitmap for those
2924 * ports which interrupted us, and use that bitmap
2925 * to ack (only) those ports via hc_irq_cause.
2926 */
2927 ack_irqs = 0;
Mark Lord2b748a02009-03-10 22:01:17 -04002928 if (hc_cause & PORTS_0_3_COAL_DONE)
2929 ack_irqs = HC_COAL_IRQ;
Mark Lordeabd5eb2008-05-02 02:13:27 -04002930 for (p = 0; p < MV_PORTS_PER_HC; ++p) {
2931 if ((port + p) >= hpriv->n_ports)
2932 break;
2933 port_mask = (DONE_IRQ | ERR_IRQ) << (p * 2);
2934 if (hc_cause & port_mask)
2935 ack_irqs |= (DMA_IRQ | DEV_IRQ) << p;
2936 }
Mark Lorda3718c12008-04-19 15:07:18 -04002937 hc_mmio = mv_hc_base_from_port(mmio, port);
Mark Lordcae5a292009-04-06 16:43:45 -04002938 writelfl(~ack_irqs, hc_mmio + HC_IRQ_CAUSE);
Mark Lorda3718c12008-04-19 15:07:18 -04002939 handled = 1;
2940 }
Mark Lorda9010322008-05-02 02:14:02 -04002941 /*
2942 * Handle interrupts signalled for this port:
2943 */
Mark Lordeabd5eb2008-05-02 02:13:27 -04002944 port_cause = (main_irq_cause >> shift) & (DONE_IRQ | ERR_IRQ);
Mark Lorda9010322008-05-02 02:14:02 -04002945 if (port_cause)
2946 mv_port_intr(ap, port_cause);
Brett Russ20f733e2005-09-01 18:26:17 -04002947 }
Mark Lorda3718c12008-04-19 15:07:18 -04002948 return handled;
Brett Russ20f733e2005-09-01 18:26:17 -04002949}
2950
Mark Lorda3718c12008-04-19 15:07:18 -04002951static int mv_pci_error(struct ata_host *host, void __iomem *mmio)
Jeff Garzikbdd4ddd2007-07-12 14:34:26 -04002952{
Mark Lord02a121d2007-12-01 13:07:22 -05002953 struct mv_host_priv *hpriv = host->private_data;
Jeff Garzikbdd4ddd2007-07-12 14:34:26 -04002954 struct ata_port *ap;
2955 struct ata_queued_cmd *qc;
2956 struct ata_eh_info *ehi;
2957 unsigned int i, err_mask, printed = 0;
2958 u32 err_cause;
2959
Mark Lordcae5a292009-04-06 16:43:45 -04002960 err_cause = readl(mmio + hpriv->irq_cause_offset);
Jeff Garzikbdd4ddd2007-07-12 14:34:26 -04002961
Joe Perchesa44fec12011-04-15 15:51:58 -07002962 dev_err(host->dev, "PCI ERROR; PCI IRQ cause=0x%08x\n", err_cause);
Jeff Garzikbdd4ddd2007-07-12 14:34:26 -04002963
2964 DPRINTK("All regs @ PCI error\n");
2965 mv_dump_all_regs(mmio, -1, to_pci_dev(host->dev));
2966
Mark Lordcae5a292009-04-06 16:43:45 -04002967 writelfl(0, mmio + hpriv->irq_cause_offset);
Jeff Garzikbdd4ddd2007-07-12 14:34:26 -04002968
2969 for (i = 0; i < host->n_ports; i++) {
2970 ap = host->ports[i];
Tejun Heo936fd732007-08-06 18:36:23 +09002971 if (!ata_link_offline(&ap->link)) {
Tejun Heo9af5c9c2007-08-06 18:36:22 +09002972 ehi = &ap->link.eh_info;
Jeff Garzikbdd4ddd2007-07-12 14:34:26 -04002973 ata_ehi_clear_desc(ehi);
2974 if (!printed++)
2975 ata_ehi_push_desc(ehi,
2976 "PCI err cause 0x%08x", err_cause);
2977 err_mask = AC_ERR_HOST_BUS;
Tejun Heocf480622008-01-24 00:05:14 +09002978 ehi->action = ATA_EH_RESET;
Tejun Heo9af5c9c2007-08-06 18:36:22 +09002979 qc = ata_qc_from_tag(ap, ap->link.active_tag);
Jeff Garzikbdd4ddd2007-07-12 14:34:26 -04002980 if (qc)
2981 qc->err_mask |= err_mask;
2982 else
2983 ehi->err_mask |= err_mask;
2984
2985 ata_port_freeze(ap);
2986 }
2987 }
Mark Lorda3718c12008-04-19 15:07:18 -04002988 return 1; /* handled */
Jeff Garzikbdd4ddd2007-07-12 14:34:26 -04002989}
2990
Brett Russ05b308e2005-10-05 17:08:53 -04002991/**
Jeff Garzikc5d3e452007-07-11 18:30:50 -04002992 * mv_interrupt - Main interrupt event handler
Brett Russ05b308e2005-10-05 17:08:53 -04002993 * @irq: unused
2994 * @dev_instance: private data; in this case the host structure
Brett Russ05b308e2005-10-05 17:08:53 -04002995 *
2996 * Read the read only register to determine if any host
2997 * controllers have pending interrupts. If so, call lower level
2998 * routine to handle. Also check for PCI errors which are only
2999 * reported here.
3000 *
Jeff Garzik8b260242005-11-12 12:32:50 -05003001 * LOCKING:
Jeff Garzikcca39742006-08-24 03:19:22 -04003002 * This routine holds the host lock while processing pending
Brett Russ05b308e2005-10-05 17:08:53 -04003003 * interrupts.
3004 */
David Howells7d12e782006-10-05 14:55:46 +01003005static irqreturn_t mv_interrupt(int irq, void *dev_instance)
Brett Russ20f733e2005-09-01 18:26:17 -04003006{
Jeff Garzikcca39742006-08-24 03:19:22 -04003007 struct ata_host *host = dev_instance;
Saeed Bisharaf351b2d2008-02-01 18:08:03 -05003008 struct mv_host_priv *hpriv = host->private_data;
Mark Lorda3718c12008-04-19 15:07:18 -04003009 unsigned int handled = 0;
Mark Lord6d3c30e2009-01-21 10:31:29 -05003010 int using_msi = hpriv->hp_flags & MV_HP_FLAG_MSI;
Mark Lord96e2c4872008-05-17 13:38:00 -04003011 u32 main_irq_cause, pending_irqs;
Brett Russ20f733e2005-09-01 18:26:17 -04003012
Mark Lord646a4da2008-01-26 18:30:37 -05003013 spin_lock(&host->lock);
Mark Lord6d3c30e2009-01-21 10:31:29 -05003014
3015 /* for MSI: block new interrupts while in here */
3016 if (using_msi)
Mark Lord2b748a02009-03-10 22:01:17 -04003017 mv_write_main_irq_mask(0, hpriv);
Mark Lord6d3c30e2009-01-21 10:31:29 -05003018
Mark Lord7368f912008-04-25 11:24:24 -04003019 main_irq_cause = readl(hpriv->main_irq_cause_addr);
Mark Lord96e2c4872008-05-17 13:38:00 -04003020 pending_irqs = main_irq_cause & hpriv->main_irq_mask;
Mark Lord352fab72008-04-19 14:43:42 -04003021 /*
3022 * Deal with cases where we either have nothing pending, or have read
3023 * a bogus register value which can indicate HW removal or PCI fault.
Brett Russ20f733e2005-09-01 18:26:17 -04003024 */
Mark Lorda44253d2008-05-17 13:37:07 -04003025 if (pending_irqs && main_irq_cause != 0xffffffffU) {
Mark Lord1f398472008-05-27 17:54:48 -04003026 if (unlikely((pending_irqs & PCI_ERR) && !IS_SOC(hpriv)))
Mark Lorda3718c12008-04-19 15:07:18 -04003027 handled = mv_pci_error(host, hpriv->base);
3028 else
Mark Lorda44253d2008-05-17 13:37:07 -04003029 handled = mv_host_intr(host, pending_irqs);
Jeff Garzikbdd4ddd2007-07-12 14:34:26 -04003030 }
Mark Lord6d3c30e2009-01-21 10:31:29 -05003031
3032 /* for MSI: unmask; interrupt cause bits will retrigger now */
3033 if (using_msi)
Mark Lord2b748a02009-03-10 22:01:17 -04003034 mv_write_main_irq_mask(hpriv->main_irq_mask, hpriv);
Mark Lord6d3c30e2009-01-21 10:31:29 -05003035
Mark Lord9d51af72009-03-10 16:28:51 -04003036 spin_unlock(&host->lock);
3037
Brett Russ20f733e2005-09-01 18:26:17 -04003038 return IRQ_RETVAL(handled);
3039}
3040
Jeff Garzikc9d39132005-11-13 17:47:51 -05003041static unsigned int mv5_scr_offset(unsigned int sc_reg_in)
3042{
3043 unsigned int ofs;
3044
3045 switch (sc_reg_in) {
3046 case SCR_STATUS:
3047 case SCR_ERROR:
3048 case SCR_CONTROL:
3049 ofs = sc_reg_in * sizeof(u32);
3050 break;
3051 default:
3052 ofs = 0xffffffffU;
3053 break;
3054 }
3055 return ofs;
3056}
3057
Tejun Heo82ef04f2008-07-31 17:02:40 +09003058static int mv5_scr_read(struct ata_link *link, unsigned int sc_reg_in, u32 *val)
Jeff Garzikc9d39132005-11-13 17:47:51 -05003059{
Tejun Heo82ef04f2008-07-31 17:02:40 +09003060 struct mv_host_priv *hpriv = link->ap->host->private_data;
Saeed Bisharaf351b2d2008-02-01 18:08:03 -05003061 void __iomem *mmio = hpriv->base;
Tejun Heo82ef04f2008-07-31 17:02:40 +09003062 void __iomem *addr = mv5_phy_base(mmio, link->ap->port_no);
Jeff Garzikc9d39132005-11-13 17:47:51 -05003063 unsigned int ofs = mv5_scr_offset(sc_reg_in);
3064
Tejun Heoda3dbb12007-07-16 14:29:40 +09003065 if (ofs != 0xffffffffU) {
3066 *val = readl(addr + ofs);
3067 return 0;
3068 } else
3069 return -EINVAL;
Jeff Garzikc9d39132005-11-13 17:47:51 -05003070}
3071
Tejun Heo82ef04f2008-07-31 17:02:40 +09003072static int mv5_scr_write(struct ata_link *link, unsigned int sc_reg_in, u32 val)
Jeff Garzikc9d39132005-11-13 17:47:51 -05003073{
Tejun Heo82ef04f2008-07-31 17:02:40 +09003074 struct mv_host_priv *hpriv = link->ap->host->private_data;
Saeed Bisharaf351b2d2008-02-01 18:08:03 -05003075 void __iomem *mmio = hpriv->base;
Tejun Heo82ef04f2008-07-31 17:02:40 +09003076 void __iomem *addr = mv5_phy_base(mmio, link->ap->port_no);
Jeff Garzikc9d39132005-11-13 17:47:51 -05003077 unsigned int ofs = mv5_scr_offset(sc_reg_in);
3078
Tejun Heoda3dbb12007-07-16 14:29:40 +09003079 if (ofs != 0xffffffffU) {
Tejun Heo0d5ff562007-02-01 15:06:36 +09003080 writelfl(val, addr + ofs);
Tejun Heoda3dbb12007-07-16 14:29:40 +09003081 return 0;
3082 } else
3083 return -EINVAL;
Jeff Garzikc9d39132005-11-13 17:47:51 -05003084}
3085
Saeed Bishara7bb3c522008-01-30 11:50:45 -11003086static void mv5_reset_bus(struct ata_host *host, void __iomem *mmio)
Jeff Garzik522479f2005-11-12 22:14:02 -05003087{
Saeed Bishara7bb3c522008-01-30 11:50:45 -11003088 struct pci_dev *pdev = to_pci_dev(host->dev);
Jeff Garzik522479f2005-11-12 22:14:02 -05003089 int early_5080;
3090
Auke Kok44c10132007-06-08 15:46:36 -07003091 early_5080 = (pdev->device == 0x5080) && (pdev->revision == 0);
Jeff Garzik522479f2005-11-12 22:14:02 -05003092
3093 if (!early_5080) {
3094 u32 tmp = readl(mmio + MV_PCI_EXP_ROM_BAR_CTL);
3095 tmp |= (1 << 0);
3096 writel(tmp, mmio + MV_PCI_EXP_ROM_BAR_CTL);
3097 }
3098
Saeed Bishara7bb3c522008-01-30 11:50:45 -11003099 mv_reset_pci_bus(host, mmio);
Jeff Garzik522479f2005-11-12 22:14:02 -05003100}
3101
3102static void mv5_reset_flash(struct mv_host_priv *hpriv, void __iomem *mmio)
3103{
Mark Lordcae5a292009-04-06 16:43:45 -04003104 writel(0x0fcfffff, mmio + FLASH_CTL);
Jeff Garzik522479f2005-11-12 22:14:02 -05003105}
3106
Jeff Garzik47c2b672005-11-12 21:13:17 -05003107static void mv5_read_preamp(struct mv_host_priv *hpriv, int idx,
Jeff Garzikba3fe8f2005-11-12 19:08:48 -05003108 void __iomem *mmio)
3109{
Jeff Garzikc9d39132005-11-13 17:47:51 -05003110 void __iomem *phy_mmio = mv5_phy_base(mmio, idx);
3111 u32 tmp;
3112
3113 tmp = readl(phy_mmio + MV5_PHY_MODE);
3114
3115 hpriv->signal[idx].pre = tmp & 0x1800; /* bits 12:11 */
3116 hpriv->signal[idx].amps = tmp & 0xe0; /* bits 7:5 */
Jeff Garzikba3fe8f2005-11-12 19:08:48 -05003117}
3118
Jeff Garzik47c2b672005-11-12 21:13:17 -05003119static void mv5_enable_leds(struct mv_host_priv *hpriv, void __iomem *mmio)
Jeff Garzikba3fe8f2005-11-12 19:08:48 -05003120{
Jeff Garzik522479f2005-11-12 22:14:02 -05003121 u32 tmp;
3122
Mark Lordcae5a292009-04-06 16:43:45 -04003123 writel(0, mmio + GPIO_PORT_CTL);
Jeff Garzik522479f2005-11-12 22:14:02 -05003124
3125 /* FIXME: handle MV_HP_ERRATA_50XXB2 errata */
3126
3127 tmp = readl(mmio + MV_PCI_EXP_ROM_BAR_CTL);
3128 tmp |= ~(1 << 0);
3129 writel(tmp, mmio + MV_PCI_EXP_ROM_BAR_CTL);
Jeff Garzikba3fe8f2005-11-12 19:08:48 -05003130}
3131
Jeff Garzik2a47ce02005-11-12 23:05:14 -05003132static void mv5_phy_errata(struct mv_host_priv *hpriv, void __iomem *mmio,
3133 unsigned int port)
Jeff Garzikbca1c4e2005-11-12 12:48:15 -05003134{
Jeff Garzikc9d39132005-11-13 17:47:51 -05003135 void __iomem *phy_mmio = mv5_phy_base(mmio, port);
3136 const u32 mask = (1<<12) | (1<<11) | (1<<7) | (1<<6) | (1<<5);
3137 u32 tmp;
3138 int fix_apm_sq = (hpriv->hp_flags & MV_HP_ERRATA_50XXB0);
3139
3140 if (fix_apm_sq) {
Mark Lordcae5a292009-04-06 16:43:45 -04003141 tmp = readl(phy_mmio + MV5_LTMODE);
Jeff Garzikc9d39132005-11-13 17:47:51 -05003142 tmp |= (1 << 19);
Mark Lordcae5a292009-04-06 16:43:45 -04003143 writel(tmp, phy_mmio + MV5_LTMODE);
Jeff Garzikc9d39132005-11-13 17:47:51 -05003144
Mark Lordcae5a292009-04-06 16:43:45 -04003145 tmp = readl(phy_mmio + MV5_PHY_CTL);
Jeff Garzikc9d39132005-11-13 17:47:51 -05003146 tmp &= ~0x3;
3147 tmp |= 0x1;
Mark Lordcae5a292009-04-06 16:43:45 -04003148 writel(tmp, phy_mmio + MV5_PHY_CTL);
Jeff Garzikc9d39132005-11-13 17:47:51 -05003149 }
3150
3151 tmp = readl(phy_mmio + MV5_PHY_MODE);
3152 tmp &= ~mask;
3153 tmp |= hpriv->signal[port].pre;
3154 tmp |= hpriv->signal[port].amps;
3155 writel(tmp, phy_mmio + MV5_PHY_MODE);
Jeff Garzikbca1c4e2005-11-12 12:48:15 -05003156}
3157
Jeff Garzikc9d39132005-11-13 17:47:51 -05003158
3159#undef ZERO
3160#define ZERO(reg) writel(0, port_mmio + (reg))
3161static void mv5_reset_hc_port(struct mv_host_priv *hpriv, void __iomem *mmio,
3162 unsigned int port)
Jeff Garzik47c2b672005-11-12 21:13:17 -05003163{
Jeff Garzikc9d39132005-11-13 17:47:51 -05003164 void __iomem *port_mmio = mv_port_base(mmio, port);
3165
Mark Lorde12bef52008-03-31 19:33:56 -04003166 mv_reset_channel(hpriv, mmio, port);
Jeff Garzikc9d39132005-11-13 17:47:51 -05003167
3168 ZERO(0x028); /* command */
Mark Lordcae5a292009-04-06 16:43:45 -04003169 writel(0x11f, port_mmio + EDMA_CFG);
Jeff Garzikc9d39132005-11-13 17:47:51 -05003170 ZERO(0x004); /* timer */
3171 ZERO(0x008); /* irq err cause */
3172 ZERO(0x00c); /* irq err mask */
3173 ZERO(0x010); /* rq bah */
3174 ZERO(0x014); /* rq inp */
3175 ZERO(0x018); /* rq outp */
3176 ZERO(0x01c); /* respq bah */
3177 ZERO(0x024); /* respq outp */
3178 ZERO(0x020); /* respq inp */
3179 ZERO(0x02c); /* test control */
Mark Lordcae5a292009-04-06 16:43:45 -04003180 writel(0xbc, port_mmio + EDMA_IORDY_TMOUT);
Jeff Garzikc9d39132005-11-13 17:47:51 -05003181}
3182#undef ZERO
3183
3184#define ZERO(reg) writel(0, hc_mmio + (reg))
3185static void mv5_reset_one_hc(struct mv_host_priv *hpriv, void __iomem *mmio,
3186 unsigned int hc)
3187{
3188 void __iomem *hc_mmio = mv_hc_base(mmio, hc);
3189 u32 tmp;
3190
3191 ZERO(0x00c);
3192 ZERO(0x010);
3193 ZERO(0x014);
3194 ZERO(0x018);
3195
3196 tmp = readl(hc_mmio + 0x20);
3197 tmp &= 0x1c1c1c1c;
3198 tmp |= 0x03030303;
3199 writel(tmp, hc_mmio + 0x20);
3200}
3201#undef ZERO
3202
3203static int mv5_reset_hc(struct mv_host_priv *hpriv, void __iomem *mmio,
3204 unsigned int n_hc)
3205{
3206 unsigned int hc, port;
3207
3208 for (hc = 0; hc < n_hc; hc++) {
3209 for (port = 0; port < MV_PORTS_PER_HC; port++)
3210 mv5_reset_hc_port(hpriv, mmio,
3211 (hc * MV_PORTS_PER_HC) + port);
3212
3213 mv5_reset_one_hc(hpriv, mmio, hc);
3214 }
3215
3216 return 0;
Jeff Garzik47c2b672005-11-12 21:13:17 -05003217}
3218
Jeff Garzik101ffae2005-11-12 22:17:49 -05003219#undef ZERO
3220#define ZERO(reg) writel(0, mmio + (reg))
Saeed Bishara7bb3c522008-01-30 11:50:45 -11003221static void mv_reset_pci_bus(struct ata_host *host, void __iomem *mmio)
Jeff Garzik101ffae2005-11-12 22:17:49 -05003222{
Mark Lord02a121d2007-12-01 13:07:22 -05003223 struct mv_host_priv *hpriv = host->private_data;
Jeff Garzik101ffae2005-11-12 22:17:49 -05003224 u32 tmp;
3225
Mark Lordcae5a292009-04-06 16:43:45 -04003226 tmp = readl(mmio + MV_PCI_MODE);
Jeff Garzik101ffae2005-11-12 22:17:49 -05003227 tmp &= 0xff00ffff;
Mark Lordcae5a292009-04-06 16:43:45 -04003228 writel(tmp, mmio + MV_PCI_MODE);
Jeff Garzik101ffae2005-11-12 22:17:49 -05003229
3230 ZERO(MV_PCI_DISC_TIMER);
3231 ZERO(MV_PCI_MSI_TRIGGER);
Mark Lordcae5a292009-04-06 16:43:45 -04003232 writel(0x000100ff, mmio + MV_PCI_XBAR_TMOUT);
Jeff Garzik101ffae2005-11-12 22:17:49 -05003233 ZERO(MV_PCI_SERR_MASK);
Mark Lordcae5a292009-04-06 16:43:45 -04003234 ZERO(hpriv->irq_cause_offset);
3235 ZERO(hpriv->irq_mask_offset);
Jeff Garzik101ffae2005-11-12 22:17:49 -05003236 ZERO(MV_PCI_ERR_LOW_ADDRESS);
3237 ZERO(MV_PCI_ERR_HIGH_ADDRESS);
3238 ZERO(MV_PCI_ERR_ATTRIBUTE);
3239 ZERO(MV_PCI_ERR_COMMAND);
3240}
3241#undef ZERO
3242
3243static void mv6_reset_flash(struct mv_host_priv *hpriv, void __iomem *mmio)
3244{
3245 u32 tmp;
3246
3247 mv5_reset_flash(hpriv, mmio);
3248
Mark Lordcae5a292009-04-06 16:43:45 -04003249 tmp = readl(mmio + GPIO_PORT_CTL);
Jeff Garzik101ffae2005-11-12 22:17:49 -05003250 tmp &= 0x3;
3251 tmp |= (1 << 5) | (1 << 6);
Mark Lordcae5a292009-04-06 16:43:45 -04003252 writel(tmp, mmio + GPIO_PORT_CTL);
Jeff Garzik101ffae2005-11-12 22:17:49 -05003253}
3254
3255/**
3256 * mv6_reset_hc - Perform the 6xxx global soft reset
3257 * @mmio: base address of the HBA
3258 *
3259 * This routine only applies to 6xxx parts.
3260 *
3261 * LOCKING:
3262 * Inherited from caller.
3263 */
Jeff Garzikc9d39132005-11-13 17:47:51 -05003264static int mv6_reset_hc(struct mv_host_priv *hpriv, void __iomem *mmio,
3265 unsigned int n_hc)
Jeff Garzik101ffae2005-11-12 22:17:49 -05003266{
Mark Lordcae5a292009-04-06 16:43:45 -04003267 void __iomem *reg = mmio + PCI_MAIN_CMD_STS;
Jeff Garzik101ffae2005-11-12 22:17:49 -05003268 int i, rc = 0;
3269 u32 t;
3270
3271 /* Following procedure defined in PCI "main command and status
3272 * register" table.
3273 */
3274 t = readl(reg);
3275 writel(t | STOP_PCI_MASTER, reg);
3276
3277 for (i = 0; i < 1000; i++) {
3278 udelay(1);
3279 t = readl(reg);
Jeff Garzik2dcb4072007-10-19 06:42:56 -04003280 if (PCI_MASTER_EMPTY & t)
Jeff Garzik101ffae2005-11-12 22:17:49 -05003281 break;
Jeff Garzik101ffae2005-11-12 22:17:49 -05003282 }
3283 if (!(PCI_MASTER_EMPTY & t)) {
3284 printk(KERN_ERR DRV_NAME ": PCI master won't flush\n");
3285 rc = 1;
3286 goto done;
3287 }
3288
3289 /* set reset */
3290 i = 5;
3291 do {
3292 writel(t | GLOB_SFT_RST, reg);
3293 t = readl(reg);
3294 udelay(1);
3295 } while (!(GLOB_SFT_RST & t) && (i-- > 0));
3296
3297 if (!(GLOB_SFT_RST & t)) {
3298 printk(KERN_ERR DRV_NAME ": can't set global reset\n");
3299 rc = 1;
3300 goto done;
3301 }
3302
3303 /* clear reset and *reenable the PCI master* (not mentioned in spec) */
3304 i = 5;
3305 do {
3306 writel(t & ~(GLOB_SFT_RST | STOP_PCI_MASTER), reg);
3307 t = readl(reg);
3308 udelay(1);
3309 } while ((GLOB_SFT_RST & t) && (i-- > 0));
3310
3311 if (GLOB_SFT_RST & t) {
3312 printk(KERN_ERR DRV_NAME ": can't clear global reset\n");
3313 rc = 1;
3314 }
3315done:
3316 return rc;
3317}
3318
Jeff Garzik47c2b672005-11-12 21:13:17 -05003319static void mv6_read_preamp(struct mv_host_priv *hpriv, int idx,
Jeff Garzikba3fe8f2005-11-12 19:08:48 -05003320 void __iomem *mmio)
3321{
3322 void __iomem *port_mmio;
3323 u32 tmp;
3324
Mark Lordcae5a292009-04-06 16:43:45 -04003325 tmp = readl(mmio + RESET_CFG);
Jeff Garzikba3fe8f2005-11-12 19:08:48 -05003326 if ((tmp & (1 << 0)) == 0) {
Jeff Garzik47c2b672005-11-12 21:13:17 -05003327 hpriv->signal[idx].amps = 0x7 << 8;
Jeff Garzikba3fe8f2005-11-12 19:08:48 -05003328 hpriv->signal[idx].pre = 0x1 << 5;
3329 return;
3330 }
3331
3332 port_mmio = mv_port_base(mmio, idx);
3333 tmp = readl(port_mmio + PHY_MODE2);
3334
3335 hpriv->signal[idx].amps = tmp & 0x700; /* bits 10:8 */
3336 hpriv->signal[idx].pre = tmp & 0xe0; /* bits 7:5 */
3337}
3338
Jeff Garzik47c2b672005-11-12 21:13:17 -05003339static void mv6_enable_leds(struct mv_host_priv *hpriv, void __iomem *mmio)
Jeff Garzikba3fe8f2005-11-12 19:08:48 -05003340{
Mark Lordcae5a292009-04-06 16:43:45 -04003341 writel(0x00000060, mmio + GPIO_PORT_CTL);
Jeff Garzikba3fe8f2005-11-12 19:08:48 -05003342}
3343
Jeff Garzikc9d39132005-11-13 17:47:51 -05003344static void mv6_phy_errata(struct mv_host_priv *hpriv, void __iomem *mmio,
Jeff Garzik2a47ce02005-11-12 23:05:14 -05003345 unsigned int port)
Jeff Garzikbca1c4e2005-11-12 12:48:15 -05003346{
Jeff Garzikc9d39132005-11-13 17:47:51 -05003347 void __iomem *port_mmio = mv_port_base(mmio, port);
3348
Jeff Garzikbca1c4e2005-11-12 12:48:15 -05003349 u32 hp_flags = hpriv->hp_flags;
Jeff Garzik47c2b672005-11-12 21:13:17 -05003350 int fix_phy_mode2 =
3351 hp_flags & (MV_HP_ERRATA_60X1B2 | MV_HP_ERRATA_60X1C0);
Jeff Garzikbca1c4e2005-11-12 12:48:15 -05003352 int fix_phy_mode4 =
Jeff Garzik47c2b672005-11-12 21:13:17 -05003353 hp_flags & (MV_HP_ERRATA_60X1B2 | MV_HP_ERRATA_60X1C0);
Mark Lord8c30a8b2008-05-27 17:56:31 -04003354 u32 m2, m3;
Jeff Garzik47c2b672005-11-12 21:13:17 -05003355
3356 if (fix_phy_mode2) {
3357 m2 = readl(port_mmio + PHY_MODE2);
3358 m2 &= ~(1 << 16);
3359 m2 |= (1 << 31);
3360 writel(m2, port_mmio + PHY_MODE2);
3361
3362 udelay(200);
3363
3364 m2 = readl(port_mmio + PHY_MODE2);
3365 m2 &= ~((1 << 16) | (1 << 31));
3366 writel(m2, port_mmio + PHY_MODE2);
3367
3368 udelay(200);
3369 }
3370
Mark Lord8c30a8b2008-05-27 17:56:31 -04003371 /*
3372 * Gen-II/IIe PHY_MODE3 errata RM#2:
3373 * Achieves better receiver noise performance than the h/w default:
3374 */
3375 m3 = readl(port_mmio + PHY_MODE3);
3376 m3 = (m3 & 0x1f) | (0x5555601 << 5);
Jeff Garzikbca1c4e2005-11-12 12:48:15 -05003377
Mark Lord0388a8c2008-05-28 13:41:52 -04003378 /* Guideline 88F5182 (GL# SATA-S11) */
3379 if (IS_SOC(hpriv))
3380 m3 &= ~0x1c;
3381
Jeff Garzikbca1c4e2005-11-12 12:48:15 -05003382 if (fix_phy_mode4) {
Mark Lordba069e32008-05-31 16:46:34 -04003383 u32 m4 = readl(port_mmio + PHY_MODE4);
3384 /*
3385 * Enforce reserved-bit restrictions on GenIIe devices only.
3386 * For earlier chipsets, force only the internal config field
3387 * (workaround for errata FEr SATA#10 part 1).
3388 */
Mark Lord8c30a8b2008-05-27 17:56:31 -04003389 if (IS_GEN_IIE(hpriv))
Mark Lordba069e32008-05-31 16:46:34 -04003390 m4 = (m4 & ~PHY_MODE4_RSVD_ZEROS) | PHY_MODE4_RSVD_ONES;
3391 else
3392 m4 = (m4 & ~PHY_MODE4_CFG_MASK) | PHY_MODE4_CFG_VALUE;
Mark Lord8c30a8b2008-05-27 17:56:31 -04003393 writel(m4, port_mmio + PHY_MODE4);
Jeff Garzikbca1c4e2005-11-12 12:48:15 -05003394 }
Mark Lordb406c7a2008-05-28 12:01:12 -04003395 /*
3396 * Workaround for 60x1-B2 errata SATA#13:
3397 * Any write to PHY_MODE4 (above) may corrupt PHY_MODE3,
3398 * so we must always rewrite PHY_MODE3 after PHY_MODE4.
Mark Lordba684602009-04-06 15:25:39 -04003399 * Or ensure we use writelfl() when writing PHY_MODE4.
Mark Lordb406c7a2008-05-28 12:01:12 -04003400 */
3401 writel(m3, port_mmio + PHY_MODE3);
Jeff Garzikbca1c4e2005-11-12 12:48:15 -05003402
3403 /* Revert values of pre-emphasis and signal amps to the saved ones */
3404 m2 = readl(port_mmio + PHY_MODE2);
3405
3406 m2 &= ~MV_M2_PREAMP_MASK;
Jeff Garzik2a47ce02005-11-12 23:05:14 -05003407 m2 |= hpriv->signal[port].amps;
3408 m2 |= hpriv->signal[port].pre;
Jeff Garzik47c2b672005-11-12 21:13:17 -05003409 m2 &= ~(1 << 16);
Jeff Garzikbca1c4e2005-11-12 12:48:15 -05003410
Jeff Garzike4e7b892006-01-31 12:18:41 -05003411 /* according to mvSata 3.6.1, some IIE values are fixed */
3412 if (IS_GEN_IIE(hpriv)) {
3413 m2 &= ~0xC30FF01F;
3414 m2 |= 0x0000900F;
3415 }
3416
Jeff Garzikbca1c4e2005-11-12 12:48:15 -05003417 writel(m2, port_mmio + PHY_MODE2);
3418}
3419
Saeed Bisharaf351b2d2008-02-01 18:08:03 -05003420/* TODO: use the generic LED interface to configure the SATA Presence */
3421/* & Acitivy LEDs on the board */
3422static void mv_soc_enable_leds(struct mv_host_priv *hpriv,
3423 void __iomem *mmio)
3424{
3425 return;
3426}
3427
3428static void mv_soc_read_preamp(struct mv_host_priv *hpriv, int idx,
3429 void __iomem *mmio)
3430{
3431 void __iomem *port_mmio;
3432 u32 tmp;
3433
3434 port_mmio = mv_port_base(mmio, idx);
3435 tmp = readl(port_mmio + PHY_MODE2);
3436
3437 hpriv->signal[idx].amps = tmp & 0x700; /* bits 10:8 */
3438 hpriv->signal[idx].pre = tmp & 0xe0; /* bits 7:5 */
3439}
3440
3441#undef ZERO
3442#define ZERO(reg) writel(0, port_mmio + (reg))
3443static void mv_soc_reset_hc_port(struct mv_host_priv *hpriv,
3444 void __iomem *mmio, unsigned int port)
3445{
3446 void __iomem *port_mmio = mv_port_base(mmio, port);
3447
Mark Lorde12bef52008-03-31 19:33:56 -04003448 mv_reset_channel(hpriv, mmio, port);
Saeed Bisharaf351b2d2008-02-01 18:08:03 -05003449
3450 ZERO(0x028); /* command */
Mark Lordcae5a292009-04-06 16:43:45 -04003451 writel(0x101f, port_mmio + EDMA_CFG);
Saeed Bisharaf351b2d2008-02-01 18:08:03 -05003452 ZERO(0x004); /* timer */
3453 ZERO(0x008); /* irq err cause */
3454 ZERO(0x00c); /* irq err mask */
3455 ZERO(0x010); /* rq bah */
3456 ZERO(0x014); /* rq inp */
3457 ZERO(0x018); /* rq outp */
3458 ZERO(0x01c); /* respq bah */
3459 ZERO(0x024); /* respq outp */
3460 ZERO(0x020); /* respq inp */
3461 ZERO(0x02c); /* test control */
Saeed Bisharad7b0c142009-12-06 18:26:17 +02003462 writel(0x800, port_mmio + EDMA_IORDY_TMOUT);
Saeed Bisharaf351b2d2008-02-01 18:08:03 -05003463}
3464
3465#undef ZERO
3466
3467#define ZERO(reg) writel(0, hc_mmio + (reg))
3468static void mv_soc_reset_one_hc(struct mv_host_priv *hpriv,
3469 void __iomem *mmio)
3470{
3471 void __iomem *hc_mmio = mv_hc_base(mmio, 0);
3472
3473 ZERO(0x00c);
3474 ZERO(0x010);
3475 ZERO(0x014);
3476
3477}
3478
3479#undef ZERO
3480
3481static int mv_soc_reset_hc(struct mv_host_priv *hpriv,
3482 void __iomem *mmio, unsigned int n_hc)
3483{
3484 unsigned int port;
3485
3486 for (port = 0; port < hpriv->n_ports; port++)
3487 mv_soc_reset_hc_port(hpriv, mmio, port);
3488
3489 mv_soc_reset_one_hc(hpriv, mmio);
3490
3491 return 0;
3492}
3493
3494static void mv_soc_reset_flash(struct mv_host_priv *hpriv,
3495 void __iomem *mmio)
3496{
3497 return;
3498}
3499
3500static void mv_soc_reset_bus(struct ata_host *host, void __iomem *mmio)
3501{
3502 return;
3503}
3504
Martin Michlmayr29b7e432009-05-04 20:58:50 +02003505static void mv_soc_65n_phy_errata(struct mv_host_priv *hpriv,
3506 void __iomem *mmio, unsigned int port)
3507{
3508 void __iomem *port_mmio = mv_port_base(mmio, port);
3509 u32 reg;
3510
3511 reg = readl(port_mmio + PHY_MODE3);
3512 reg &= ~(0x3 << 27); /* SELMUPF (bits 28:27) to 1 */
3513 reg |= (0x1 << 27);
3514 reg &= ~(0x3 << 29); /* SELMUPI (bits 30:29) to 1 */
3515 reg |= (0x1 << 29);
3516 writel(reg, port_mmio + PHY_MODE3);
3517
3518 reg = readl(port_mmio + PHY_MODE4);
3519 reg &= ~0x1; /* SATU_OD8 (bit 0) to 0, reserved bit 16 must be set */
3520 reg |= (0x1 << 16);
3521 writel(reg, port_mmio + PHY_MODE4);
3522
3523 reg = readl(port_mmio + PHY_MODE9_GEN2);
3524 reg &= ~0xf; /* TXAMP[3:0] (bits 3:0) to 8 */
3525 reg |= 0x8;
3526 reg &= ~(0x1 << 14); /* TXAMP[4] (bit 14) to 0 */
3527 writel(reg, port_mmio + PHY_MODE9_GEN2);
3528
3529 reg = readl(port_mmio + PHY_MODE9_GEN1);
3530 reg &= ~0xf; /* TXAMP[3:0] (bits 3:0) to 8 */
3531 reg |= 0x8;
3532 reg &= ~(0x1 << 14); /* TXAMP[4] (bit 14) to 0 */
3533 writel(reg, port_mmio + PHY_MODE9_GEN1);
3534}
3535
3536/**
3537 * soc_is_65 - check if the soc is 65 nano device
3538 *
3539 * Detect the type of the SoC, this is done by reading the PHYCFG_OFS
3540 * register, this register should contain non-zero value and it exists only
3541 * in the 65 nano devices, when reading it from older devices we get 0.
3542 */
3543static bool soc_is_65n(struct mv_host_priv *hpriv)
3544{
3545 void __iomem *port0_mmio = mv_port_base(hpriv->base, 0);
3546
3547 if (readl(port0_mmio + PHYCFG_OFS))
3548 return true;
3549 return false;
3550}
3551
Mark Lord8e7decd2008-05-02 02:07:51 -04003552static void mv_setup_ifcfg(void __iomem *port_mmio, int want_gen2i)
Mark Lordb67a1062008-03-31 19:35:13 -04003553{
Mark Lordcae5a292009-04-06 16:43:45 -04003554 u32 ifcfg = readl(port_mmio + SATA_IFCFG);
Mark Lordb67a1062008-03-31 19:35:13 -04003555
Mark Lord8e7decd2008-05-02 02:07:51 -04003556 ifcfg = (ifcfg & 0xf7f) | 0x9b1000; /* from chip spec */
Mark Lordb67a1062008-03-31 19:35:13 -04003557 if (want_gen2i)
Mark Lord8e7decd2008-05-02 02:07:51 -04003558 ifcfg |= (1 << 7); /* enable gen2i speed */
Mark Lordcae5a292009-04-06 16:43:45 -04003559 writelfl(ifcfg, port_mmio + SATA_IFCFG);
Mark Lordb67a1062008-03-31 19:35:13 -04003560}
3561
Mark Lorde12bef52008-03-31 19:33:56 -04003562static void mv_reset_channel(struct mv_host_priv *hpriv, void __iomem *mmio,
Jeff Garzikc9d39132005-11-13 17:47:51 -05003563 unsigned int port_no)
Brett Russ20f733e2005-09-01 18:26:17 -04003564{
Jeff Garzikc9d39132005-11-13 17:47:51 -05003565 void __iomem *port_mmio = mv_port_base(mmio, port_no);
Brett Russ20f733e2005-09-01 18:26:17 -04003566
Mark Lord8e7decd2008-05-02 02:07:51 -04003567 /*
3568 * The datasheet warns against setting EDMA_RESET when EDMA is active
3569 * (but doesn't say what the problem might be). So we first try
3570 * to disable the EDMA engine before doing the EDMA_RESET operation.
3571 */
Mark Lord0d8be5c2008-04-16 14:56:12 -04003572 mv_stop_edma_engine(port_mmio);
Mark Lordcae5a292009-04-06 16:43:45 -04003573 writelfl(EDMA_RESET, port_mmio + EDMA_CMD);
Jeff Garzikbca1c4e2005-11-12 12:48:15 -05003574
Mark Lordb67a1062008-03-31 19:35:13 -04003575 if (!IS_GEN_I(hpriv)) {
Mark Lord8e7decd2008-05-02 02:07:51 -04003576 /* Enable 3.0gb/s link speed: this survives EDMA_RESET */
3577 mv_setup_ifcfg(port_mmio, 1);
Jeff Garzikbca1c4e2005-11-12 12:48:15 -05003578 }
Mark Lordb67a1062008-03-31 19:35:13 -04003579 /*
Mark Lord8e7decd2008-05-02 02:07:51 -04003580 * Strobing EDMA_RESET here causes a hard reset of the SATA transport,
Mark Lordb67a1062008-03-31 19:35:13 -04003581 * link, and physical layers. It resets all SATA interface registers
Mark Lordcae5a292009-04-06 16:43:45 -04003582 * (except for SATA_IFCFG), and issues a COMRESET to the dev.
Brett Russ20f733e2005-09-01 18:26:17 -04003583 */
Mark Lordcae5a292009-04-06 16:43:45 -04003584 writelfl(EDMA_RESET, port_mmio + EDMA_CMD);
Mark Lordb67a1062008-03-31 19:35:13 -04003585 udelay(25); /* allow reset propagation */
Mark Lordcae5a292009-04-06 16:43:45 -04003586 writelfl(0, port_mmio + EDMA_CMD);
Brett Russ20f733e2005-09-01 18:26:17 -04003587
Jeff Garzikc9d39132005-11-13 17:47:51 -05003588 hpriv->ops->phy_errata(hpriv, mmio, port_no);
3589
Jeff Garzikee9ccdf2007-07-12 15:51:22 -04003590 if (IS_GEN_I(hpriv))
Jeff Garzikc9d39132005-11-13 17:47:51 -05003591 mdelay(1);
3592}
3593
Mark Lorde49856d2008-04-16 14:59:07 -04003594static void mv_pmp_select(struct ata_port *ap, int pmp)
Jeff Garzikc9d39132005-11-13 17:47:51 -05003595{
Mark Lorde49856d2008-04-16 14:59:07 -04003596 if (sata_pmp_supported(ap)) {
3597 void __iomem *port_mmio = mv_ap_base(ap);
Mark Lordcae5a292009-04-06 16:43:45 -04003598 u32 reg = readl(port_mmio + SATA_IFCTL);
Mark Lorde49856d2008-04-16 14:59:07 -04003599 int old = reg & 0xf;
Jeff Garzikc9d39132005-11-13 17:47:51 -05003600
Mark Lorde49856d2008-04-16 14:59:07 -04003601 if (old != pmp) {
3602 reg = (reg & ~0xf) | pmp;
Mark Lordcae5a292009-04-06 16:43:45 -04003603 writelfl(reg, port_mmio + SATA_IFCTL);
Mark Lorde49856d2008-04-16 14:59:07 -04003604 }
Tejun Heoda3dbb12007-07-16 14:29:40 +09003605 }
Brett Russ20f733e2005-09-01 18:26:17 -04003606}
3607
Mark Lorde49856d2008-04-16 14:59:07 -04003608static int mv_pmp_hardreset(struct ata_link *link, unsigned int *class,
3609 unsigned long deadline)
Jeff Garzik22374672005-11-17 10:59:48 -05003610{
Mark Lorde49856d2008-04-16 14:59:07 -04003611 mv_pmp_select(link->ap, sata_srst_pmp(link));
3612 return sata_std_hardreset(link, class, deadline);
3613}
Jeff Garzik0ea9e172007-07-13 17:06:45 -04003614
Mark Lorde49856d2008-04-16 14:59:07 -04003615static int mv_softreset(struct ata_link *link, unsigned int *class,
3616 unsigned long deadline)
3617{
3618 mv_pmp_select(link->ap, sata_srst_pmp(link));
3619 return ata_sff_softreset(link, class, deadline);
Jeff Garzik22374672005-11-17 10:59:48 -05003620}
3621
Tejun Heocc0680a2007-08-06 18:36:23 +09003622static int mv_hardreset(struct ata_link *link, unsigned int *class,
Jeff Garzikbdd4ddd2007-07-12 14:34:26 -04003623 unsigned long deadline)
3624{
Tejun Heocc0680a2007-08-06 18:36:23 +09003625 struct ata_port *ap = link->ap;
Jeff Garzikbdd4ddd2007-07-12 14:34:26 -04003626 struct mv_host_priv *hpriv = ap->host->private_data;
Mark Lordb5624682008-03-31 19:34:40 -04003627 struct mv_port_priv *pp = ap->private_data;
Saeed Bisharaf351b2d2008-02-01 18:08:03 -05003628 void __iomem *mmio = hpriv->base;
Mark Lord0d8be5c2008-04-16 14:56:12 -04003629 int rc, attempts = 0, extra = 0;
3630 u32 sstatus;
3631 bool online;
Jeff Garzikbdd4ddd2007-07-12 14:34:26 -04003632
Mark Lorde12bef52008-03-31 19:33:56 -04003633 mv_reset_channel(hpriv, mmio, ap->port_no);
Mark Lordb5624682008-03-31 19:34:40 -04003634 pp->pp_flags &= ~MV_PP_FLAG_EDMA_EN;
Mark Lordd16ab3f2009-02-25 15:17:43 -05003635 pp->pp_flags &=
3636 ~(MV_PP_FLAG_FBS_EN | MV_PP_FLAG_NCQ_EN | MV_PP_FLAG_FAKE_ATA_BUSY);
Jeff Garzikbdd4ddd2007-07-12 14:34:26 -04003637
Mark Lord0d8be5c2008-04-16 14:56:12 -04003638 /* Workaround for errata FEr SATA#10 (part 2) */
3639 do {
Mark Lord17c5aab2008-04-16 14:56:51 -04003640 const unsigned long *timing =
3641 sata_ehc_deb_timing(&link->eh_context);
Jeff Garzikbdd4ddd2007-07-12 14:34:26 -04003642
Mark Lord17c5aab2008-04-16 14:56:51 -04003643 rc = sata_link_hardreset(link, timing, deadline + extra,
3644 &online, NULL);
Mark Lord9dcffd92008-05-14 09:18:12 -04003645 rc = online ? -EAGAIN : rc;
Mark Lord17c5aab2008-04-16 14:56:51 -04003646 if (rc)
Mark Lord0d8be5c2008-04-16 14:56:12 -04003647 return rc;
Mark Lord0d8be5c2008-04-16 14:56:12 -04003648 sata_scr_read(link, SCR_STATUS, &sstatus);
3649 if (!IS_GEN_I(hpriv) && ++attempts >= 5 && sstatus == 0x121) {
3650 /* Force 1.5gb/s link speed and try again */
Mark Lord8e7decd2008-05-02 02:07:51 -04003651 mv_setup_ifcfg(mv_ap_base(ap), 0);
Mark Lord0d8be5c2008-04-16 14:56:12 -04003652 if (time_after(jiffies + HZ, deadline))
3653 extra = HZ; /* only extend it once, max */
3654 }
3655 } while (sstatus != 0x0 && sstatus != 0x113 && sstatus != 0x123);
Mark Lord08da1752009-02-25 15:13:03 -05003656 mv_save_cached_regs(ap);
Mark Lord66e57a22009-01-30 18:52:58 -05003657 mv_edma_cfg(ap, 0, 0);
Jeff Garzikbdd4ddd2007-07-12 14:34:26 -04003658
Mark Lord17c5aab2008-04-16 14:56:51 -04003659 return rc;
Jeff Garzikbdd4ddd2007-07-12 14:34:26 -04003660}
3661
Jeff Garzikbdd4ddd2007-07-12 14:34:26 -04003662static void mv_eh_freeze(struct ata_port *ap)
Brett Russ20f733e2005-09-01 18:26:17 -04003663{
Mark Lord1cfd19a2008-04-19 15:05:50 -04003664 mv_stop_edma(ap);
Mark Lordc4de5732008-05-17 13:35:21 -04003665 mv_enable_port_irqs(ap, 0);
Jeff Garzikbdd4ddd2007-07-12 14:34:26 -04003666}
3667
3668static void mv_eh_thaw(struct ata_port *ap)
3669{
Saeed Bisharaf351b2d2008-02-01 18:08:03 -05003670 struct mv_host_priv *hpriv = ap->host->private_data;
Mark Lordc4de5732008-05-17 13:35:21 -04003671 unsigned int port = ap->port_no;
3672 unsigned int hardport = mv_hardport_from_port(port);
Mark Lord1cfd19a2008-04-19 15:05:50 -04003673 void __iomem *hc_mmio = mv_hc_base_from_port(hpriv->base, port);
Jeff Garzikbdd4ddd2007-07-12 14:34:26 -04003674 void __iomem *port_mmio = mv_ap_base(ap);
Mark Lordc4de5732008-05-17 13:35:21 -04003675 u32 hc_irq_cause;
Jeff Garzikbdd4ddd2007-07-12 14:34:26 -04003676
Jeff Garzikbdd4ddd2007-07-12 14:34:26 -04003677 /* clear EDMA errors on this port */
Mark Lordcae5a292009-04-06 16:43:45 -04003678 writel(0, port_mmio + EDMA_ERR_IRQ_CAUSE);
Jeff Garzikbdd4ddd2007-07-12 14:34:26 -04003679
3680 /* clear pending irq events */
Mark Lordcae6edc2009-01-19 18:05:42 -05003681 hc_irq_cause = ~((DEV_IRQ | DMA_IRQ) << hardport);
Mark Lordcae5a292009-04-06 16:43:45 -04003682 writelfl(hc_irq_cause, hc_mmio + HC_IRQ_CAUSE);
Jeff Garzikbdd4ddd2007-07-12 14:34:26 -04003683
Mark Lord88e675e2008-05-17 13:36:30 -04003684 mv_enable_port_irqs(ap, ERR_IRQ);
Brett Russ31961942005-09-30 01:36:00 -04003685}
3686
Brett Russ05b308e2005-10-05 17:08:53 -04003687/**
3688 * mv_port_init - Perform some early initialization on a single port.
3689 * @port: libata data structure storing shadow register addresses
3690 * @port_mmio: base address of the port
3691 *
3692 * Initialize shadow register mmio addresses, clear outstanding
3693 * interrupts on the port, and unmask interrupts for the future
3694 * start of the port.
3695 *
3696 * LOCKING:
3697 * Inherited from caller.
3698 */
Brett Russ31961942005-09-30 01:36:00 -04003699static void mv_port_init(struct ata_ioports *port, void __iomem *port_mmio)
3700{
Mark Lordcae5a292009-04-06 16:43:45 -04003701 void __iomem *serr, *shd_base = port_mmio + SHD_BLK;
Brett Russ31961942005-09-30 01:36:00 -04003702
Jeff Garzik8b260242005-11-12 12:32:50 -05003703 /* PIO related setup
Brett Russ31961942005-09-30 01:36:00 -04003704 */
3705 port->data_addr = shd_base + (sizeof(u32) * ATA_REG_DATA);
Jeff Garzik8b260242005-11-12 12:32:50 -05003706 port->error_addr =
Brett Russ31961942005-09-30 01:36:00 -04003707 port->feature_addr = shd_base + (sizeof(u32) * ATA_REG_ERR);
3708 port->nsect_addr = shd_base + (sizeof(u32) * ATA_REG_NSECT);
3709 port->lbal_addr = shd_base + (sizeof(u32) * ATA_REG_LBAL);
3710 port->lbam_addr = shd_base + (sizeof(u32) * ATA_REG_LBAM);
3711 port->lbah_addr = shd_base + (sizeof(u32) * ATA_REG_LBAH);
3712 port->device_addr = shd_base + (sizeof(u32) * ATA_REG_DEVICE);
Jeff Garzik8b260242005-11-12 12:32:50 -05003713 port->status_addr =
Brett Russ31961942005-09-30 01:36:00 -04003714 port->command_addr = shd_base + (sizeof(u32) * ATA_REG_STATUS);
3715 /* special case: control/altstatus doesn't have ATA_REG_ address */
Mark Lordcae5a292009-04-06 16:43:45 -04003716 port->altstatus_addr = port->ctl_addr = shd_base + SHD_CTL_AST;
Brett Russ31961942005-09-30 01:36:00 -04003717
Brett Russ31961942005-09-30 01:36:00 -04003718 /* Clear any currently outstanding port interrupt conditions */
Mark Lordcae5a292009-04-06 16:43:45 -04003719 serr = port_mmio + mv_scr_offset(SCR_ERROR);
3720 writelfl(readl(serr), serr);
3721 writelfl(0, port_mmio + EDMA_ERR_IRQ_CAUSE);
Brett Russ31961942005-09-30 01:36:00 -04003722
Mark Lord646a4da2008-01-26 18:30:37 -05003723 /* unmask all non-transient EDMA error interrupts */
Mark Lordcae5a292009-04-06 16:43:45 -04003724 writelfl(~EDMA_ERR_IRQ_TRANSIENT, port_mmio + EDMA_ERR_IRQ_MASK);
Brett Russ20f733e2005-09-01 18:26:17 -04003725
Jeff Garzik8b260242005-11-12 12:32:50 -05003726 VPRINTK("EDMA cfg=0x%08x EDMA IRQ err cause/mask=0x%08x/0x%08x\n",
Mark Lordcae5a292009-04-06 16:43:45 -04003727 readl(port_mmio + EDMA_CFG),
3728 readl(port_mmio + EDMA_ERR_IRQ_CAUSE),
3729 readl(port_mmio + EDMA_ERR_IRQ_MASK));
Brett Russ20f733e2005-09-01 18:26:17 -04003730}
3731
Mark Lord616d4a92008-05-02 02:08:32 -04003732static unsigned int mv_in_pcix_mode(struct ata_host *host)
3733{
3734 struct mv_host_priv *hpriv = host->private_data;
3735 void __iomem *mmio = hpriv->base;
3736 u32 reg;
3737
Mark Lord1f398472008-05-27 17:54:48 -04003738 if (IS_SOC(hpriv) || !IS_PCIE(hpriv))
Mark Lord616d4a92008-05-02 02:08:32 -04003739 return 0; /* not PCI-X capable */
Mark Lordcae5a292009-04-06 16:43:45 -04003740 reg = readl(mmio + MV_PCI_MODE);
Mark Lord616d4a92008-05-02 02:08:32 -04003741 if ((reg & MV_PCI_MODE_MASK) == 0)
3742 return 0; /* conventional PCI mode */
3743 return 1; /* chip is in PCI-X mode */
3744}
3745
3746static int mv_pci_cut_through_okay(struct ata_host *host)
3747{
3748 struct mv_host_priv *hpriv = host->private_data;
3749 void __iomem *mmio = hpriv->base;
3750 u32 reg;
3751
3752 if (!mv_in_pcix_mode(host)) {
Mark Lordcae5a292009-04-06 16:43:45 -04003753 reg = readl(mmio + MV_PCI_COMMAND);
3754 if (reg & MV_PCI_COMMAND_MRDTRIG)
Mark Lord616d4a92008-05-02 02:08:32 -04003755 return 0; /* not okay */
3756 }
3757 return 1; /* okay */
3758}
3759
Mark Lord65ad7fef2009-04-06 15:24:14 -04003760static void mv_60x1b2_errata_pci7(struct ata_host *host)
3761{
3762 struct mv_host_priv *hpriv = host->private_data;
3763 void __iomem *mmio = hpriv->base;
3764
3765 /* workaround for 60x1-B2 errata PCI#7 */
3766 if (mv_in_pcix_mode(host)) {
Mark Lordcae5a292009-04-06 16:43:45 -04003767 u32 reg = readl(mmio + MV_PCI_COMMAND);
3768 writelfl(reg & ~MV_PCI_COMMAND_MWRCOM, mmio + MV_PCI_COMMAND);
Mark Lord65ad7fef2009-04-06 15:24:14 -04003769 }
3770}
3771
Tejun Heo4447d352007-04-17 23:44:08 +09003772static int mv_chip_id(struct ata_host *host, unsigned int board_idx)
Jeff Garzikbca1c4e2005-11-12 12:48:15 -05003773{
Tejun Heo4447d352007-04-17 23:44:08 +09003774 struct pci_dev *pdev = to_pci_dev(host->dev);
3775 struct mv_host_priv *hpriv = host->private_data;
Jeff Garzikbca1c4e2005-11-12 12:48:15 -05003776 u32 hp_flags = hpriv->hp_flags;
3777
Jeff Garzik5796d1c2007-10-26 00:03:37 -04003778 switch (board_idx) {
Jeff Garzik47c2b672005-11-12 21:13:17 -05003779 case chip_5080:
3780 hpriv->ops = &mv5xxx_ops;
Jeff Garzikee9ccdf2007-07-12 15:51:22 -04003781 hp_flags |= MV_HP_GEN_I;
Jeff Garzikbca1c4e2005-11-12 12:48:15 -05003782
Auke Kok44c10132007-06-08 15:46:36 -07003783 switch (pdev->revision) {
Jeff Garzik47c2b672005-11-12 21:13:17 -05003784 case 0x1:
3785 hp_flags |= MV_HP_ERRATA_50XXB0;
3786 break;
3787 case 0x3:
3788 hp_flags |= MV_HP_ERRATA_50XXB2;
3789 break;
3790 default:
Joe Perchesa44fec12011-04-15 15:51:58 -07003791 dev_warn(&pdev->dev,
3792 "Applying 50XXB2 workarounds to unknown rev\n");
Jeff Garzik47c2b672005-11-12 21:13:17 -05003793 hp_flags |= MV_HP_ERRATA_50XXB2;
3794 break;
3795 }
3796 break;
3797
3798 case chip_504x:
3799 case chip_508x:
3800 hpriv->ops = &mv5xxx_ops;
Jeff Garzikee9ccdf2007-07-12 15:51:22 -04003801 hp_flags |= MV_HP_GEN_I;
Jeff Garzik47c2b672005-11-12 21:13:17 -05003802
Auke Kok44c10132007-06-08 15:46:36 -07003803 switch (pdev->revision) {
Jeff Garzik47c2b672005-11-12 21:13:17 -05003804 case 0x0:
3805 hp_flags |= MV_HP_ERRATA_50XXB0;
3806 break;
3807 case 0x3:
3808 hp_flags |= MV_HP_ERRATA_50XXB2;
3809 break;
3810 default:
Joe Perchesa44fec12011-04-15 15:51:58 -07003811 dev_warn(&pdev->dev,
3812 "Applying B2 workarounds to unknown rev\n");
Jeff Garzik47c2b672005-11-12 21:13:17 -05003813 hp_flags |= MV_HP_ERRATA_50XXB2;
3814 break;
Jeff Garzikbca1c4e2005-11-12 12:48:15 -05003815 }
3816 break;
3817
3818 case chip_604x:
3819 case chip_608x:
Jeff Garzik47c2b672005-11-12 21:13:17 -05003820 hpriv->ops = &mv6xxx_ops;
Jeff Garzikee9ccdf2007-07-12 15:51:22 -04003821 hp_flags |= MV_HP_GEN_II;
Jeff Garzik47c2b672005-11-12 21:13:17 -05003822
Auke Kok44c10132007-06-08 15:46:36 -07003823 switch (pdev->revision) {
Jeff Garzik47c2b672005-11-12 21:13:17 -05003824 case 0x7:
Mark Lord65ad7fef2009-04-06 15:24:14 -04003825 mv_60x1b2_errata_pci7(host);
Jeff Garzik47c2b672005-11-12 21:13:17 -05003826 hp_flags |= MV_HP_ERRATA_60X1B2;
3827 break;
3828 case 0x9:
3829 hp_flags |= MV_HP_ERRATA_60X1C0;
Jeff Garzikbca1c4e2005-11-12 12:48:15 -05003830 break;
3831 default:
Joe Perchesa44fec12011-04-15 15:51:58 -07003832 dev_warn(&pdev->dev,
3833 "Applying B2 workarounds to unknown rev\n");
Jeff Garzik47c2b672005-11-12 21:13:17 -05003834 hp_flags |= MV_HP_ERRATA_60X1B2;
Jeff Garzikbca1c4e2005-11-12 12:48:15 -05003835 break;
3836 }
3837 break;
3838
Jeff Garzike4e7b892006-01-31 12:18:41 -05003839 case chip_7042:
Mark Lord616d4a92008-05-02 02:08:32 -04003840 hp_flags |= MV_HP_PCIE | MV_HP_CUT_THROUGH;
Mark Lord306b30f2007-12-04 14:07:52 -05003841 if (pdev->vendor == PCI_VENDOR_ID_TTI &&
3842 (pdev->device == 0x2300 || pdev->device == 0x2310))
3843 {
Mark Lord4e520032007-12-11 12:58:05 -05003844 /*
3845 * Highpoint RocketRAID PCIe 23xx series cards:
3846 *
3847 * Unconfigured drives are treated as "Legacy"
3848 * by the BIOS, and it overwrites sector 8 with
3849 * a "Lgcy" metadata block prior to Linux boot.
3850 *
3851 * Configured drives (RAID or JBOD) leave sector 8
3852 * alone, but instead overwrite a high numbered
3853 * sector for the RAID metadata. This sector can
3854 * be determined exactly, by truncating the physical
3855 * drive capacity to a nice even GB value.
3856 *
3857 * RAID metadata is at: (dev->n_sectors & ~0xfffff)
3858 *
3859 * Warn the user, lest they think we're just buggy.
3860 */
3861 printk(KERN_WARNING DRV_NAME ": Highpoint RocketRAID"
3862 " BIOS CORRUPTS DATA on all attached drives,"
3863 " regardless of if/how they are configured."
3864 " BEWARE!\n");
3865 printk(KERN_WARNING DRV_NAME ": For data safety, do not"
3866 " use sectors 8-9 on \"Legacy\" drives,"
3867 " and avoid the final two gigabytes on"
3868 " all RocketRAID BIOS initialized drives.\n");
Mark Lord306b30f2007-12-04 14:07:52 -05003869 }
Mark Lord8e7decd2008-05-02 02:07:51 -04003870 /* drop through */
Jeff Garzike4e7b892006-01-31 12:18:41 -05003871 case chip_6042:
3872 hpriv->ops = &mv6xxx_ops;
Jeff Garzike4e7b892006-01-31 12:18:41 -05003873 hp_flags |= MV_HP_GEN_IIE;
Mark Lord616d4a92008-05-02 02:08:32 -04003874 if (board_idx == chip_6042 && mv_pci_cut_through_okay(host))
3875 hp_flags |= MV_HP_CUT_THROUGH;
Jeff Garzike4e7b892006-01-31 12:18:41 -05003876
Auke Kok44c10132007-06-08 15:46:36 -07003877 switch (pdev->revision) {
Mark Lord5cf73bf2008-05-27 17:58:56 -04003878 case 0x2: /* Rev.B0: the first/only public release */
Jeff Garzike4e7b892006-01-31 12:18:41 -05003879 hp_flags |= MV_HP_ERRATA_60X1C0;
3880 break;
3881 default:
Joe Perchesa44fec12011-04-15 15:51:58 -07003882 dev_warn(&pdev->dev,
3883 "Applying 60X1C0 workarounds to unknown rev\n");
Jeff Garzike4e7b892006-01-31 12:18:41 -05003884 hp_flags |= MV_HP_ERRATA_60X1C0;
3885 break;
3886 }
3887 break;
Saeed Bisharaf351b2d2008-02-01 18:08:03 -05003888 case chip_soc:
Martin Michlmayr29b7e432009-05-04 20:58:50 +02003889 if (soc_is_65n(hpriv))
3890 hpriv->ops = &mv_soc_65n_ops;
3891 else
3892 hpriv->ops = &mv_soc_ops;
Saeed Bisharaeb3a55a2008-08-04 00:52:55 -11003893 hp_flags |= MV_HP_FLAG_SOC | MV_HP_GEN_IIE |
3894 MV_HP_ERRATA_60X1C0;
Saeed Bisharaf351b2d2008-02-01 18:08:03 -05003895 break;
Jeff Garzike4e7b892006-01-31 12:18:41 -05003896
Jeff Garzikbca1c4e2005-11-12 12:48:15 -05003897 default:
Joe Perchesa44fec12011-04-15 15:51:58 -07003898 dev_err(host->dev, "BUG: invalid board index %u\n", board_idx);
Jeff Garzikbca1c4e2005-11-12 12:48:15 -05003899 return 1;
3900 }
3901
3902 hpriv->hp_flags = hp_flags;
Mark Lord02a121d2007-12-01 13:07:22 -05003903 if (hp_flags & MV_HP_PCIE) {
Mark Lordcae5a292009-04-06 16:43:45 -04003904 hpriv->irq_cause_offset = PCIE_IRQ_CAUSE;
3905 hpriv->irq_mask_offset = PCIE_IRQ_MASK;
Mark Lord02a121d2007-12-01 13:07:22 -05003906 hpriv->unmask_all_irqs = PCIE_UNMASK_ALL_IRQS;
3907 } else {
Mark Lordcae5a292009-04-06 16:43:45 -04003908 hpriv->irq_cause_offset = PCI_IRQ_CAUSE;
3909 hpriv->irq_mask_offset = PCI_IRQ_MASK;
Mark Lord02a121d2007-12-01 13:07:22 -05003910 hpriv->unmask_all_irqs = PCI_UNMASK_ALL_IRQS;
3911 }
Jeff Garzikbca1c4e2005-11-12 12:48:15 -05003912
3913 return 0;
3914}
3915
Brett Russ05b308e2005-10-05 17:08:53 -04003916/**
Jeff Garzik47c2b672005-11-12 21:13:17 -05003917 * mv_init_host - Perform some early initialization of the host.
Tejun Heo4447d352007-04-17 23:44:08 +09003918 * @host: ATA host to initialize
Brett Russ05b308e2005-10-05 17:08:53 -04003919 *
3920 * If possible, do an early global reset of the host. Then do
3921 * our port init and clear/unmask all/relevant host interrupts.
3922 *
3923 * LOCKING:
3924 * Inherited from caller.
3925 */
Saeed Bishara1bfeff02009-12-17 01:05:00 -05003926static int mv_init_host(struct ata_host *host)
Brett Russ20f733e2005-09-01 18:26:17 -04003927{
3928 int rc = 0, n_hc, port, hc;
Tejun Heo4447d352007-04-17 23:44:08 +09003929 struct mv_host_priv *hpriv = host->private_data;
Saeed Bisharaf351b2d2008-02-01 18:08:03 -05003930 void __iomem *mmio = hpriv->base;
Jeff Garzik47c2b672005-11-12 21:13:17 -05003931
Saeed Bishara1bfeff02009-12-17 01:05:00 -05003932 rc = mv_chip_id(host, hpriv->board_idx);
Jeff Garzikbca1c4e2005-11-12 12:48:15 -05003933 if (rc)
Mark Lord352fab72008-04-19 14:43:42 -04003934 goto done;
Saeed Bisharaf351b2d2008-02-01 18:08:03 -05003935
Mark Lord1f398472008-05-27 17:54:48 -04003936 if (IS_SOC(hpriv)) {
Mark Lordcae5a292009-04-06 16:43:45 -04003937 hpriv->main_irq_cause_addr = mmio + SOC_HC_MAIN_IRQ_CAUSE;
3938 hpriv->main_irq_mask_addr = mmio + SOC_HC_MAIN_IRQ_MASK;
Mark Lord1f398472008-05-27 17:54:48 -04003939 } else {
Mark Lordcae5a292009-04-06 16:43:45 -04003940 hpriv->main_irq_cause_addr = mmio + PCI_HC_MAIN_IRQ_CAUSE;
3941 hpriv->main_irq_mask_addr = mmio + PCI_HC_MAIN_IRQ_MASK;
Saeed Bisharaf351b2d2008-02-01 18:08:03 -05003942 }
Mark Lord352fab72008-04-19 14:43:42 -04003943
Thomas Reitmayr5d0fb2e2009-01-24 20:24:58 +01003944 /* initialize shadow irq mask with register's value */
3945 hpriv->main_irq_mask = readl(hpriv->main_irq_mask_addr);
3946
Mark Lord352fab72008-04-19 14:43:42 -04003947 /* global interrupt mask: 0 == mask everything */
Mark Lordc4de5732008-05-17 13:35:21 -04003948 mv_set_main_irq_mask(host, ~0, 0);
Jeff Garzikbca1c4e2005-11-12 12:48:15 -05003949
Tejun Heo4447d352007-04-17 23:44:08 +09003950 n_hc = mv_get_hc_count(host->ports[0]->flags);
Jeff Garzikbca1c4e2005-11-12 12:48:15 -05003951
Tejun Heo4447d352007-04-17 23:44:08 +09003952 for (port = 0; port < host->n_ports; port++)
Martin Michlmayr29b7e432009-05-04 20:58:50 +02003953 if (hpriv->ops->read_preamp)
3954 hpriv->ops->read_preamp(hpriv, port, mmio);
Brett Russ20f733e2005-09-01 18:26:17 -04003955
Jeff Garzikc9d39132005-11-13 17:47:51 -05003956 rc = hpriv->ops->reset_hc(hpriv, mmio, n_hc);
Jeff Garzik47c2b672005-11-12 21:13:17 -05003957 if (rc)
Brett Russ20f733e2005-09-01 18:26:17 -04003958 goto done;
Brett Russ20f733e2005-09-01 18:26:17 -04003959
Jeff Garzik522479f2005-11-12 22:14:02 -05003960 hpriv->ops->reset_flash(hpriv, mmio);
Saeed Bishara7bb3c522008-01-30 11:50:45 -11003961 hpriv->ops->reset_bus(host, mmio);
Jeff Garzik47c2b672005-11-12 21:13:17 -05003962 hpriv->ops->enable_leds(hpriv, mmio);
Brett Russ20f733e2005-09-01 18:26:17 -04003963
Tejun Heo4447d352007-04-17 23:44:08 +09003964 for (port = 0; port < host->n_ports; port++) {
Tejun Heocbcdd872007-08-18 13:14:55 +09003965 struct ata_port *ap = host->ports[port];
Jeff Garzik2a47ce02005-11-12 23:05:14 -05003966 void __iomem *port_mmio = mv_port_base(mmio, port);
Tejun Heocbcdd872007-08-18 13:14:55 +09003967
3968 mv_port_init(&ap->ioaddr, port_mmio);
Brett Russ20f733e2005-09-01 18:26:17 -04003969 }
3970
3971 for (hc = 0; hc < n_hc; hc++) {
Brett Russ31961942005-09-30 01:36:00 -04003972 void __iomem *hc_mmio = mv_hc_base(mmio, hc);
3973
3974 VPRINTK("HC%i: HC config=0x%08x HC IRQ cause "
3975 "(before clear)=0x%08x\n", hc,
Mark Lordcae5a292009-04-06 16:43:45 -04003976 readl(hc_mmio + HC_CFG),
3977 readl(hc_mmio + HC_IRQ_CAUSE));
Brett Russ31961942005-09-30 01:36:00 -04003978
3979 /* Clear any currently outstanding hc interrupt conditions */
Mark Lordcae5a292009-04-06 16:43:45 -04003980 writelfl(0, hc_mmio + HC_IRQ_CAUSE);
Brett Russ20f733e2005-09-01 18:26:17 -04003981 }
3982
Mark Lord44c65d12009-04-06 12:29:49 -04003983 if (!IS_SOC(hpriv)) {
3984 /* Clear any currently outstanding host interrupt conditions */
Mark Lordcae5a292009-04-06 16:43:45 -04003985 writelfl(0, mmio + hpriv->irq_cause_offset);
Brett Russ31961942005-09-30 01:36:00 -04003986
Mark Lord44c65d12009-04-06 12:29:49 -04003987 /* and unmask interrupt generation for host regs */
Mark Lordcae5a292009-04-06 16:43:45 -04003988 writelfl(hpriv->unmask_all_irqs, mmio + hpriv->irq_mask_offset);
Mark Lord44c65d12009-04-06 12:29:49 -04003989 }
Jeff Garzikfb621e22007-02-25 04:19:45 -05003990
Mark Lord6be96ac2009-02-19 10:38:04 -05003991 /*
3992 * enable only global host interrupts for now.
3993 * The per-port interrupts get done later as ports are set up.
3994 */
3995 mv_set_main_irq_mask(host, 0, PCI_ERR);
Mark Lord2b748a02009-03-10 22:01:17 -04003996 mv_set_irq_coalescing(host, irq_coalescing_io_count,
3997 irq_coalescing_usecs);
Brett Russ31961942005-09-30 01:36:00 -04003998done:
Brett Russ20f733e2005-09-01 18:26:17 -04003999 return rc;
4000}
4001
Byron Bradleyfbf14e22008-02-10 21:17:30 +00004002static int mv_create_dma_pools(struct mv_host_priv *hpriv, struct device *dev)
4003{
4004 hpriv->crqb_pool = dmam_pool_create("crqb_q", dev, MV_CRQB_Q_SZ,
4005 MV_CRQB_Q_SZ, 0);
4006 if (!hpriv->crqb_pool)
4007 return -ENOMEM;
4008
4009 hpriv->crpb_pool = dmam_pool_create("crpb_q", dev, MV_CRPB_Q_SZ,
4010 MV_CRPB_Q_SZ, 0);
4011 if (!hpriv->crpb_pool)
4012 return -ENOMEM;
4013
4014 hpriv->sg_tbl_pool = dmam_pool_create("sg_tbl", dev, MV_SG_TBL_SZ,
4015 MV_SG_TBL_SZ, 0);
4016 if (!hpriv->sg_tbl_pool)
4017 return -ENOMEM;
4018
4019 return 0;
4020}
4021
Lennert Buytenhek15a32632008-03-27 14:51:39 -04004022static void mv_conf_mbus_windows(struct mv_host_priv *hpriv,
Andrew Lunn63a93322011-12-07 21:48:07 +01004023 const struct mbus_dram_target_info *dram)
Lennert Buytenhek15a32632008-03-27 14:51:39 -04004024{
4025 int i;
4026
4027 for (i = 0; i < 4; i++) {
4028 writel(0, hpriv->base + WINDOW_CTRL(i));
4029 writel(0, hpriv->base + WINDOW_BASE(i));
4030 }
4031
4032 for (i = 0; i < dram->num_cs; i++) {
Andrew Lunn63a93322011-12-07 21:48:07 +01004033 const struct mbus_dram_window *cs = dram->cs + i;
Lennert Buytenhek15a32632008-03-27 14:51:39 -04004034
4035 writel(((cs->size - 1) & 0xffff0000) |
4036 (cs->mbus_attr << 8) |
4037 (dram->mbus_dram_target_id << 4) | 1,
4038 hpriv->base + WINDOW_CTRL(i));
4039 writel(cs->base, hpriv->base + WINDOW_BASE(i));
4040 }
4041}
4042
Saeed Bisharaf351b2d2008-02-01 18:08:03 -05004043/**
4044 * mv_platform_probe - handle a positive probe of an soc Marvell
4045 * host
4046 * @pdev: platform device found
4047 *
4048 * LOCKING:
4049 * Inherited from caller.
4050 */
4051static int mv_platform_probe(struct platform_device *pdev)
4052{
Saeed Bisharaf351b2d2008-02-01 18:08:03 -05004053 const struct mv_sata_platform_data *mv_platform_data;
Andrew Lunn63a93322011-12-07 21:48:07 +01004054 const struct mbus_dram_target_info *dram;
Saeed Bisharaf351b2d2008-02-01 18:08:03 -05004055 const struct ata_port_info *ppi[] =
4056 { &mv_port_info[chip_soc], NULL };
4057 struct ata_host *host;
4058 struct mv_host_priv *hpriv;
4059 struct resource *res;
Andrew Lunn97b414e2012-06-10 16:45:37 +02004060 int n_ports = 0, irq = 0;
Dan Carpenter99b80e92012-03-10 12:00:05 +03004061 int rc;
Andrew Lunneee98992012-02-18 22:26:42 +01004062 int port;
Saeed Bisharaf351b2d2008-02-01 18:08:03 -05004063
Joe Perches06296a12011-04-15 15:52:00 -07004064 ata_print_version_once(&pdev->dev, DRV_VERSION);
Saeed Bisharaf351b2d2008-02-01 18:08:03 -05004065
4066 /*
4067 * Simple resource validation ..
4068 */
4069 if (unlikely(pdev->num_resources != 2)) {
4070 dev_err(&pdev->dev, "invalid number of resources\n");
4071 return -EINVAL;
4072 }
4073
4074 /*
4075 * Get the register base first
4076 */
4077 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
4078 if (res == NULL)
4079 return -EINVAL;
4080
4081 /* allocate host */
Andrew Lunn97b414e2012-06-10 16:45:37 +02004082 if (pdev->dev.of_node) {
4083 of_property_read_u32(pdev->dev.of_node, "nr-ports", &n_ports);
4084 irq = irq_of_parse_and_map(pdev->dev.of_node, 0);
4085 } else {
Jingoo Han61b8c342013-07-30 17:16:05 +09004086 mv_platform_data = dev_get_platdata(&pdev->dev);
Andrew Lunn97b414e2012-06-10 16:45:37 +02004087 n_ports = mv_platform_data->n_ports;
4088 irq = platform_get_irq(pdev, 0);
4089 }
Saeed Bisharaf351b2d2008-02-01 18:08:03 -05004090
4091 host = ata_host_alloc_pinfo(&pdev->dev, ppi, n_ports);
4092 hpriv = devm_kzalloc(&pdev->dev, sizeof(*hpriv), GFP_KERNEL);
4093
4094 if (!host || !hpriv)
4095 return -ENOMEM;
Andrew Lunneee98992012-02-18 22:26:42 +01004096 hpriv->port_clks = devm_kzalloc(&pdev->dev,
4097 sizeof(struct clk *) * n_ports,
4098 GFP_KERNEL);
4099 if (!hpriv->port_clks)
4100 return -ENOMEM;
Andrew Lunnb7db4f22013-12-26 18:25:41 +01004101 hpriv->port_phys = devm_kzalloc(&pdev->dev,
4102 sizeof(struct phy *) * n_ports,
4103 GFP_KERNEL);
4104 if (!hpriv->port_phys)
4105 return -ENOMEM;
Saeed Bisharaf351b2d2008-02-01 18:08:03 -05004106 host->private_data = hpriv;
4107 hpriv->n_ports = n_ports;
Saeed Bishara1bfeff02009-12-17 01:05:00 -05004108 hpriv->board_idx = chip_soc;
Saeed Bisharaf351b2d2008-02-01 18:08:03 -05004109
4110 host->iomap = NULL;
Saeed Bisharaf1cb0ea2008-02-18 07:42:28 -11004111 hpriv->base = devm_ioremap(&pdev->dev, res->start,
Julia Lawall041b5ea2009-08-06 16:05:08 -07004112 resource_size(res));
Mark Lordcae5a292009-04-06 16:43:45 -04004113 hpriv->base -= SATAHC0_REG_BASE;
Saeed Bisharaf351b2d2008-02-01 18:08:03 -05004114
Saeed Bisharac77a2f42009-12-06 18:26:18 +02004115 hpriv->clk = clk_get(&pdev->dev, NULL);
4116 if (IS_ERR(hpriv->clk))
Andrew Lunneee98992012-02-18 22:26:42 +01004117 dev_notice(&pdev->dev, "cannot get optional clkdev\n");
Saeed Bisharac77a2f42009-12-06 18:26:18 +02004118 else
Andrew Lunneee98992012-02-18 22:26:42 +01004119 clk_prepare_enable(hpriv->clk);
4120
4121 for (port = 0; port < n_ports; port++) {
4122 char port_number[16];
4123 sprintf(port_number, "%d", port);
4124 hpriv->port_clks[port] = clk_get(&pdev->dev, port_number);
4125 if (!IS_ERR(hpriv->port_clks[port]))
4126 clk_prepare_enable(hpriv->port_clks[port]);
Andrew Lunnb7db4f22013-12-26 18:25:41 +01004127
4128 sprintf(port_number, "port%d", port);
Andrew Lunn90aa2992014-02-04 18:33:13 +01004129 hpriv->port_phys[port] = devm_phy_optional_get(&pdev->dev,
4130 port_number);
Andrew Lunnb7db4f22013-12-26 18:25:41 +01004131 if (IS_ERR(hpriv->port_phys[port])) {
4132 rc = PTR_ERR(hpriv->port_phys[port]);
4133 hpriv->port_phys[port] = NULL;
Andrew Lunn90aa2992014-02-04 18:33:13 +01004134 if (rc != -EPROBE_DEFER)
4135 dev_warn(&pdev->dev, "error getting phy %d",
4136 rc);
Andrew Lunnb7db4f22013-12-26 18:25:41 +01004137 goto err;
4138 } else
4139 phy_power_on(hpriv->port_phys[port]);
Andrew Lunneee98992012-02-18 22:26:42 +01004140 }
Saeed Bisharac77a2f42009-12-06 18:26:18 +02004141
Lennert Buytenhek15a32632008-03-27 14:51:39 -04004142 /*
4143 * (Re-)program MBUS remapping windows if we are asked to.
4144 */
Andrew Lunn63a93322011-12-07 21:48:07 +01004145 dram = mv_mbus_dram_info();
4146 if (dram)
4147 mv_conf_mbus_windows(hpriv, dram);
Lennert Buytenhek15a32632008-03-27 14:51:39 -04004148
Byron Bradleyfbf14e22008-02-10 21:17:30 +00004149 rc = mv_create_dma_pools(hpriv, &pdev->dev);
4150 if (rc)
Saeed Bisharac77a2f42009-12-06 18:26:18 +02004151 goto err;
Byron Bradleyfbf14e22008-02-10 21:17:30 +00004152
Lior Amsalem9013d642014-01-14 20:09:57 +01004153 /*
4154 * To allow disk hotplug on Armada 370/XP SoCs, the PHY speed must be
4155 * updated in the LP_PHY_CTL register.
4156 */
4157 if (pdev->dev.of_node &&
4158 of_device_is_compatible(pdev->dev.of_node,
4159 "marvell,armada-370-sata"))
4160 hpriv->hp_flags |= MV_HP_FIX_LP_PHY_CTL;
4161
Saeed Bisharaf351b2d2008-02-01 18:08:03 -05004162 /* initialize adapter */
Saeed Bishara1bfeff02009-12-17 01:05:00 -05004163 rc = mv_init_host(host);
Saeed Bisharaf351b2d2008-02-01 18:08:03 -05004164 if (rc)
Saeed Bisharac77a2f42009-12-06 18:26:18 +02004165 goto err;
Saeed Bisharaf351b2d2008-02-01 18:08:03 -05004166
Joe Perchesa44fec12011-04-15 15:51:58 -07004167 dev_info(&pdev->dev, "slots %u ports %d\n",
4168 (unsigned)MV_MAX_Q_DEPTH, host->n_ports);
Saeed Bisharaf351b2d2008-02-01 18:08:03 -05004169
Andrew Lunn97b414e2012-06-10 16:45:37 +02004170 rc = ata_host_activate(host, irq, mv_interrupt, IRQF_SHARED, &mv6_sht);
Sergei Shtylyovc00a4c92011-10-07 19:22:33 +04004171 if (!rc)
4172 return 0;
4173
Saeed Bisharac77a2f42009-12-06 18:26:18 +02004174err:
Saeed Bisharac77a2f42009-12-06 18:26:18 +02004175 if (!IS_ERR(hpriv->clk)) {
Andrew Lunneee98992012-02-18 22:26:42 +01004176 clk_disable_unprepare(hpriv->clk);
Saeed Bisharac77a2f42009-12-06 18:26:18 +02004177 clk_put(hpriv->clk);
4178 }
Andrew Lunneee98992012-02-18 22:26:42 +01004179 for (port = 0; port < n_ports; port++) {
4180 if (!IS_ERR(hpriv->port_clks[port])) {
4181 clk_disable_unprepare(hpriv->port_clks[port]);
4182 clk_put(hpriv->port_clks[port]);
4183 }
Andrew Lunnb7db4f22013-12-26 18:25:41 +01004184 if (hpriv->port_phys[port])
4185 phy_power_off(hpriv->port_phys[port]);
Andrew Lunneee98992012-02-18 22:26:42 +01004186 }
Saeed Bisharac77a2f42009-12-06 18:26:18 +02004187
4188 return rc;
Saeed Bisharaf351b2d2008-02-01 18:08:03 -05004189}
4190
4191/*
4192 *
4193 * mv_platform_remove - unplug a platform interface
4194 * @pdev: platform device
4195 *
4196 * A platform bus SATA device has been unplugged. Perform the needed
4197 * cleanup. Also called on module unload for any active devices.
4198 */
Greg Kroah-Hartman0ec24912012-12-21 13:19:58 -08004199static int mv_platform_remove(struct platform_device *pdev)
Saeed Bisharaf351b2d2008-02-01 18:08:03 -05004200{
Sergei Shtylyovd8661922011-10-07 19:24:22 +04004201 struct ata_host *host = platform_get_drvdata(pdev);
Saeed Bisharac77a2f42009-12-06 18:26:18 +02004202 struct mv_host_priv *hpriv = host->private_data;
Andrew Lunneee98992012-02-18 22:26:42 +01004203 int port;
Saeed Bisharaf351b2d2008-02-01 18:08:03 -05004204 ata_host_detach(host);
Saeed Bisharac77a2f42009-12-06 18:26:18 +02004205
Saeed Bisharac77a2f42009-12-06 18:26:18 +02004206 if (!IS_ERR(hpriv->clk)) {
Andrew Lunneee98992012-02-18 22:26:42 +01004207 clk_disable_unprepare(hpriv->clk);
Saeed Bisharac77a2f42009-12-06 18:26:18 +02004208 clk_put(hpriv->clk);
4209 }
Andrew Lunneee98992012-02-18 22:26:42 +01004210 for (port = 0; port < host->n_ports; port++) {
4211 if (!IS_ERR(hpriv->port_clks[port])) {
4212 clk_disable_unprepare(hpriv->port_clks[port]);
4213 clk_put(hpriv->port_clks[port]);
4214 }
Andrew Lunnb7db4f22013-12-26 18:25:41 +01004215 if (hpriv->port_phys[port])
4216 phy_power_off(hpriv->port_phys[port]);
Andrew Lunneee98992012-02-18 22:26:42 +01004217 }
Saeed Bisharaf351b2d2008-02-01 18:08:03 -05004218 return 0;
4219}
4220
Saeed Bishara6481f2b2009-12-06 18:26:19 +02004221#ifdef CONFIG_PM
4222static int mv_platform_suspend(struct platform_device *pdev, pm_message_t state)
4223{
Sergei Shtylyovd8661922011-10-07 19:24:22 +04004224 struct ata_host *host = platform_get_drvdata(pdev);
Saeed Bishara6481f2b2009-12-06 18:26:19 +02004225 if (host)
4226 return ata_host_suspend(host, state);
4227 else
4228 return 0;
4229}
4230
4231static int mv_platform_resume(struct platform_device *pdev)
4232{
Sergei Shtylyovd8661922011-10-07 19:24:22 +04004233 struct ata_host *host = platform_get_drvdata(pdev);
Andrew Lunn63a93322011-12-07 21:48:07 +01004234 const struct mbus_dram_target_info *dram;
Saeed Bishara6481f2b2009-12-06 18:26:19 +02004235 int ret;
4236
4237 if (host) {
4238 struct mv_host_priv *hpriv = host->private_data;
Andrew Lunn63a93322011-12-07 21:48:07 +01004239
Saeed Bishara6481f2b2009-12-06 18:26:19 +02004240 /*
4241 * (Re-)program MBUS remapping windows if we are asked to.
4242 */
Andrew Lunn63a93322011-12-07 21:48:07 +01004243 dram = mv_mbus_dram_info();
4244 if (dram)
4245 mv_conf_mbus_windows(hpriv, dram);
Saeed Bishara6481f2b2009-12-06 18:26:19 +02004246
4247 /* initialize adapter */
Saeed Bishara1bfeff02009-12-17 01:05:00 -05004248 ret = mv_init_host(host);
Saeed Bishara6481f2b2009-12-06 18:26:19 +02004249 if (ret) {
4250 printk(KERN_ERR DRV_NAME ": Error during HW init\n");
4251 return ret;
4252 }
4253 ata_host_resume(host);
4254 }
4255
4256 return 0;
4257}
4258#else
4259#define mv_platform_suspend NULL
4260#define mv_platform_resume NULL
4261#endif
4262
Andrew Lunn97b414e2012-06-10 16:45:37 +02004263#ifdef CONFIG_OF
Greg Kroah-Hartman0ec24912012-12-21 13:19:58 -08004264static struct of_device_id mv_sata_dt_ids[] = {
Simon Guinotb1f5c732014-01-14 20:04:39 +01004265 { .compatible = "marvell,armada-370-sata", },
Andrew Lunn97b414e2012-06-10 16:45:37 +02004266 { .compatible = "marvell,orion-sata", },
4267 {},
4268};
4269MODULE_DEVICE_TABLE(of, mv_sata_dt_ids);
4270#endif
4271
Saeed Bisharaf351b2d2008-02-01 18:08:03 -05004272static struct platform_driver mv_platform_driver = {
Andrew Lunn97b414e2012-06-10 16:45:37 +02004273 .probe = mv_platform_probe,
Greg Kroah-Hartman0ec24912012-12-21 13:19:58 -08004274 .remove = mv_platform_remove,
Andrew Lunn97b414e2012-06-10 16:45:37 +02004275 .suspend = mv_platform_suspend,
4276 .resume = mv_platform_resume,
4277 .driver = {
4278 .name = DRV_NAME,
4279 .owner = THIS_MODULE,
4280 .of_match_table = of_match_ptr(mv_sata_dt_ids),
4281 },
Saeed Bisharaf351b2d2008-02-01 18:08:03 -05004282};
4283
4284
Saeed Bishara7bb3c522008-01-30 11:50:45 -11004285#ifdef CONFIG_PCI
Saeed Bisharaf351b2d2008-02-01 18:08:03 -05004286static int mv_pci_init_one(struct pci_dev *pdev,
4287 const struct pci_device_id *ent);
Saeed Bisharab2dec482009-12-06 18:26:22 +02004288#ifdef CONFIG_PM
4289static int mv_pci_device_resume(struct pci_dev *pdev);
4290#endif
Saeed Bisharaf351b2d2008-02-01 18:08:03 -05004291
Saeed Bishara7bb3c522008-01-30 11:50:45 -11004292
4293static struct pci_driver mv_pci_driver = {
4294 .name = DRV_NAME,
4295 .id_table = mv_pci_tbl,
Saeed Bisharaf351b2d2008-02-01 18:08:03 -05004296 .probe = mv_pci_init_one,
Saeed Bishara7bb3c522008-01-30 11:50:45 -11004297 .remove = ata_pci_remove_one,
Saeed Bisharab2dec482009-12-06 18:26:22 +02004298#ifdef CONFIG_PM
4299 .suspend = ata_pci_device_suspend,
4300 .resume = mv_pci_device_resume,
4301#endif
4302
Saeed Bishara7bb3c522008-01-30 11:50:45 -11004303};
4304
Saeed Bishara7bb3c522008-01-30 11:50:45 -11004305/* move to PCI layer or libata core? */
4306static int pci_go_64(struct pci_dev *pdev)
4307{
4308 int rc;
4309
Yang Hongyang6a355282009-04-06 19:01:13 -07004310 if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) {
4311 rc = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
Saeed Bishara7bb3c522008-01-30 11:50:45 -11004312 if (rc) {
Yang Hongyang284901a2009-04-06 19:01:15 -07004313 rc = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
Saeed Bishara7bb3c522008-01-30 11:50:45 -11004314 if (rc) {
Joe Perchesa44fec12011-04-15 15:51:58 -07004315 dev_err(&pdev->dev,
4316 "64-bit DMA enable failed\n");
Saeed Bishara7bb3c522008-01-30 11:50:45 -11004317 return rc;
4318 }
4319 }
4320 } else {
Yang Hongyang284901a2009-04-06 19:01:15 -07004321 rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
Saeed Bishara7bb3c522008-01-30 11:50:45 -11004322 if (rc) {
Joe Perchesa44fec12011-04-15 15:51:58 -07004323 dev_err(&pdev->dev, "32-bit DMA enable failed\n");
Saeed Bishara7bb3c522008-01-30 11:50:45 -11004324 return rc;
4325 }
Yang Hongyang284901a2009-04-06 19:01:15 -07004326 rc = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
Saeed Bishara7bb3c522008-01-30 11:50:45 -11004327 if (rc) {
Joe Perchesa44fec12011-04-15 15:51:58 -07004328 dev_err(&pdev->dev,
4329 "32-bit consistent DMA enable failed\n");
Saeed Bishara7bb3c522008-01-30 11:50:45 -11004330 return rc;
4331 }
4332 }
4333
4334 return rc;
4335}
4336
Brett Russ05b308e2005-10-05 17:08:53 -04004337/**
4338 * mv_print_info - Dump key info to kernel log for perusal.
Tejun Heo4447d352007-04-17 23:44:08 +09004339 * @host: ATA host to print info about
Brett Russ05b308e2005-10-05 17:08:53 -04004340 *
4341 * FIXME: complete this.
4342 *
4343 * LOCKING:
4344 * Inherited from caller.
4345 */
Tejun Heo4447d352007-04-17 23:44:08 +09004346static void mv_print_info(struct ata_host *host)
Brett Russ31961942005-09-30 01:36:00 -04004347{
Tejun Heo4447d352007-04-17 23:44:08 +09004348 struct pci_dev *pdev = to_pci_dev(host->dev);
4349 struct mv_host_priv *hpriv = host->private_data;
Auke Kok44c10132007-06-08 15:46:36 -07004350 u8 scc;
Jeff Garzikc1e4fe72007-07-09 12:29:31 -04004351 const char *scc_s, *gen;
Brett Russ31961942005-09-30 01:36:00 -04004352
4353 /* Use this to determine the HW stepping of the chip so we know
4354 * what errata to workaround
4355 */
Brett Russ31961942005-09-30 01:36:00 -04004356 pci_read_config_byte(pdev, PCI_CLASS_DEVICE, &scc);
4357 if (scc == 0)
4358 scc_s = "SCSI";
4359 else if (scc == 0x01)
4360 scc_s = "RAID";
4361 else
Jeff Garzikc1e4fe72007-07-09 12:29:31 -04004362 scc_s = "?";
4363
4364 if (IS_GEN_I(hpriv))
4365 gen = "I";
4366 else if (IS_GEN_II(hpriv))
4367 gen = "II";
4368 else if (IS_GEN_IIE(hpriv))
4369 gen = "IIE";
4370 else
4371 gen = "?";
Brett Russ31961942005-09-30 01:36:00 -04004372
Joe Perchesa44fec12011-04-15 15:51:58 -07004373 dev_info(&pdev->dev, "Gen-%s %u slots %u ports %s mode IRQ via %s\n",
4374 gen, (unsigned)MV_MAX_Q_DEPTH, host->n_ports,
4375 scc_s, (MV_HP_FLAG_MSI & hpriv->hp_flags) ? "MSI" : "INTx");
Brett Russ31961942005-09-30 01:36:00 -04004376}
4377
Brett Russ05b308e2005-10-05 17:08:53 -04004378/**
Saeed Bisharaf351b2d2008-02-01 18:08:03 -05004379 * mv_pci_init_one - handle a positive probe of a PCI Marvell host
Brett Russ05b308e2005-10-05 17:08:53 -04004380 * @pdev: PCI device found
4381 * @ent: PCI device ID entry for the matched host
4382 *
4383 * LOCKING:
4384 * Inherited from caller.
4385 */
Saeed Bisharaf351b2d2008-02-01 18:08:03 -05004386static int mv_pci_init_one(struct pci_dev *pdev,
4387 const struct pci_device_id *ent)
Brett Russ20f733e2005-09-01 18:26:17 -04004388{
Brett Russ20f733e2005-09-01 18:26:17 -04004389 unsigned int board_idx = (unsigned int)ent->driver_data;
Tejun Heo4447d352007-04-17 23:44:08 +09004390 const struct ata_port_info *ppi[] = { &mv_port_info[board_idx], NULL };
4391 struct ata_host *host;
4392 struct mv_host_priv *hpriv;
Saeed Bisharac4bc7d72009-12-06 18:26:20 +02004393 int n_ports, port, rc;
Brett Russ20f733e2005-09-01 18:26:17 -04004394
Joe Perches06296a12011-04-15 15:52:00 -07004395 ata_print_version_once(&pdev->dev, DRV_VERSION);
Brett Russ20f733e2005-09-01 18:26:17 -04004396
Tejun Heo4447d352007-04-17 23:44:08 +09004397 /* allocate host */
4398 n_ports = mv_get_hc_count(ppi[0]->flags) * MV_PORTS_PER_HC;
4399
4400 host = ata_host_alloc_pinfo(&pdev->dev, ppi, n_ports);
4401 hpriv = devm_kzalloc(&pdev->dev, sizeof(*hpriv), GFP_KERNEL);
4402 if (!host || !hpriv)
4403 return -ENOMEM;
4404 host->private_data = hpriv;
Saeed Bisharaf351b2d2008-02-01 18:08:03 -05004405 hpriv->n_ports = n_ports;
Saeed Bishara1bfeff02009-12-17 01:05:00 -05004406 hpriv->board_idx = board_idx;
Tejun Heo4447d352007-04-17 23:44:08 +09004407
4408 /* acquire resources */
Tejun Heo24dc5f32007-01-20 16:00:28 +09004409 rc = pcim_enable_device(pdev);
4410 if (rc)
Brett Russ20f733e2005-09-01 18:26:17 -04004411 return rc;
Brett Russ20f733e2005-09-01 18:26:17 -04004412
Tejun Heo0d5ff562007-02-01 15:06:36 +09004413 rc = pcim_iomap_regions(pdev, 1 << MV_PRIMARY_BAR, DRV_NAME);
4414 if (rc == -EBUSY)
Tejun Heo24dc5f32007-01-20 16:00:28 +09004415 pcim_pin_device(pdev);
Tejun Heo0d5ff562007-02-01 15:06:36 +09004416 if (rc)
Tejun Heo24dc5f32007-01-20 16:00:28 +09004417 return rc;
Tejun Heo4447d352007-04-17 23:44:08 +09004418 host->iomap = pcim_iomap_table(pdev);
Saeed Bisharaf351b2d2008-02-01 18:08:03 -05004419 hpriv->base = host->iomap[MV_PRIMARY_BAR];
Brett Russ20f733e2005-09-01 18:26:17 -04004420
Jeff Garzikd88184f2007-02-26 01:26:06 -05004421 rc = pci_go_64(pdev);
4422 if (rc)
4423 return rc;
4424
Mark Lordda2fa9b2008-01-26 18:32:45 -05004425 rc = mv_create_dma_pools(hpriv, &pdev->dev);
4426 if (rc)
4427 return rc;
4428
Saeed Bisharac4bc7d72009-12-06 18:26:20 +02004429 for (port = 0; port < host->n_ports; port++) {
4430 struct ata_port *ap = host->ports[port];
4431 void __iomem *port_mmio = mv_port_base(hpriv->base, port);
4432 unsigned int offset = port_mmio - hpriv->base;
4433
4434 ata_port_pbar_desc(ap, MV_PRIMARY_BAR, -1, "mmio");
4435 ata_port_pbar_desc(ap, MV_PRIMARY_BAR, offset, "port");
4436 }
4437
Brett Russ20f733e2005-09-01 18:26:17 -04004438 /* initialize adapter */
Saeed Bishara1bfeff02009-12-17 01:05:00 -05004439 rc = mv_init_host(host);
Tejun Heo24dc5f32007-01-20 16:00:28 +09004440 if (rc)
4441 return rc;
Brett Russ20f733e2005-09-01 18:26:17 -04004442
Mark Lord6d3c30e2009-01-21 10:31:29 -05004443 /* Enable message-switched interrupts, if requested */
4444 if (msi && pci_enable_msi(pdev) == 0)
4445 hpriv->hp_flags |= MV_HP_FLAG_MSI;
Brett Russ20f733e2005-09-01 18:26:17 -04004446
Brett Russ31961942005-09-30 01:36:00 -04004447 mv_dump_pci_cfg(pdev, 0x68);
Tejun Heo4447d352007-04-17 23:44:08 +09004448 mv_print_info(host);
Brett Russ20f733e2005-09-01 18:26:17 -04004449
Tejun Heo4447d352007-04-17 23:44:08 +09004450 pci_set_master(pdev);
Jeff Garzikea8b4db2007-07-17 02:21:50 -04004451 pci_try_set_mwi(pdev);
Tejun Heo4447d352007-04-17 23:44:08 +09004452 return ata_host_activate(host, pdev->irq, mv_interrupt, IRQF_SHARED,
Jeff Garzikc5d3e452007-07-11 18:30:50 -04004453 IS_GEN_I(hpriv) ? &mv5_sht : &mv6_sht);
Brett Russ20f733e2005-09-01 18:26:17 -04004454}
Saeed Bisharab2dec482009-12-06 18:26:22 +02004455
4456#ifdef CONFIG_PM
4457static int mv_pci_device_resume(struct pci_dev *pdev)
4458{
Sergei Shtylyovd8661922011-10-07 19:24:22 +04004459 struct ata_host *host = pci_get_drvdata(pdev);
Saeed Bisharab2dec482009-12-06 18:26:22 +02004460 int rc;
4461
4462 rc = ata_pci_device_do_resume(pdev);
4463 if (rc)
4464 return rc;
4465
4466 /* initialize adapter */
4467 rc = mv_init_host(host);
4468 if (rc)
4469 return rc;
4470
4471 ata_host_resume(host);
4472
4473 return 0;
4474}
4475#endif
Saeed Bishara7bb3c522008-01-30 11:50:45 -11004476#endif
Brett Russ20f733e2005-09-01 18:26:17 -04004477
4478static int __init mv_init(void)
4479{
Saeed Bishara7bb3c522008-01-30 11:50:45 -11004480 int rc = -ENODEV;
4481#ifdef CONFIG_PCI
4482 rc = pci_register_driver(&mv_pci_driver);
Saeed Bisharaf351b2d2008-02-01 18:08:03 -05004483 if (rc < 0)
4484 return rc;
4485#endif
4486 rc = platform_driver_register(&mv_platform_driver);
4487
4488#ifdef CONFIG_PCI
4489 if (rc < 0)
4490 pci_unregister_driver(&mv_pci_driver);
Saeed Bishara7bb3c522008-01-30 11:50:45 -11004491#endif
4492 return rc;
Brett Russ20f733e2005-09-01 18:26:17 -04004493}
4494
4495static void __exit mv_exit(void)
4496{
Saeed Bishara7bb3c522008-01-30 11:50:45 -11004497#ifdef CONFIG_PCI
Brett Russ20f733e2005-09-01 18:26:17 -04004498 pci_unregister_driver(&mv_pci_driver);
Saeed Bishara7bb3c522008-01-30 11:50:45 -11004499#endif
Saeed Bisharaf351b2d2008-02-01 18:08:03 -05004500 platform_driver_unregister(&mv_platform_driver);
Brett Russ20f733e2005-09-01 18:26:17 -04004501}
4502
4503MODULE_AUTHOR("Brett Russ");
4504MODULE_DESCRIPTION("SCSI low-level driver for Marvell SATA controllers");
4505MODULE_LICENSE("GPL");
4506MODULE_DEVICE_TABLE(pci, mv_pci_tbl);
4507MODULE_VERSION(DRV_VERSION);
Mark Lord17c5aab2008-04-16 14:56:51 -04004508MODULE_ALIAS("platform:" DRV_NAME);
Brett Russ20f733e2005-09-01 18:26:17 -04004509
Brett Russ20f733e2005-09-01 18:26:17 -04004510module_init(mv_init);
4511module_exit(mv_exit);