Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 1 | /* |
| 2 | * sata_mv.c - Marvell SATA support |
| 3 | * |
Mark Lord | 40f21b1 | 2009-03-10 18:51:04 -0400 | [diff] [blame] | 4 | * Copyright 2008-2009: Marvell Corporation, all rights reserved. |
Jeff Garzik | 8b26024 | 2005-11-12 12:32:50 -0500 | [diff] [blame] | 5 | * Copyright 2005: EMC Corporation, all rights reserved. |
Jeff Garzik | e2b1be5 | 2005-11-18 14:04:23 -0500 | [diff] [blame] | 6 | * Copyright 2005 Red Hat, Inc. All rights reserved. |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 7 | * |
Mark Lord | 40f21b1 | 2009-03-10 18:51:04 -0400 | [diff] [blame] | 8 | * Originally written by Brett Russ. |
| 9 | * Extensive overhaul and enhancement by Mark Lord <mlord@pobox.com>. |
| 10 | * |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 11 | * 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 Garzik | 4a05e20 | 2007-05-24 23:40:15 -0400 | [diff] [blame] | 28 | /* |
Mark Lord | 85afb93 | 2008-04-19 14:54:41 -0400 | [diff] [blame] | 29 | * sata_mv TODO list: |
| 30 | * |
Mark Lord | 85afb93 | 2008-04-19 14:54:41 -0400 | [diff] [blame] | 31 | * --> More errata workarounds for PCI-X. |
| 32 | * |
| 33 | * --> Complete a full errata audit for all chipsets to identify others. |
| 34 | * |
Mark Lord | 85afb93 | 2008-04-19 14:54:41 -0400 | [diff] [blame] | 35 | * --> Develop a low-power-consumption strategy, and implement it. |
| 36 | * |
Mark Lord | 2b748a0 | 2009-03-10 22:01:17 -0400 | [diff] [blame^] | 37 | * --> Add sysfs attributes for per-chip / per-HC IRQ coalescing thresholds. |
Mark Lord | 85afb93 | 2008-04-19 14:54:41 -0400 | [diff] [blame] | 38 | * |
| 39 | * --> [Experiment, Marvell value added] Is it possible to use target |
| 40 | * mode to cross-connect two Linux boxes with Marvell cards? If so, |
| 41 | * creating LibATA target mode support would be very interesting. |
| 42 | * |
| 43 | * Target mode, for those without docs, is the ability to directly |
| 44 | * connect two SATA ports. |
| 45 | */ |
Jeff Garzik | 4a05e20 | 2007-05-24 23:40:15 -0400 | [diff] [blame] | 46 | |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 47 | #include <linux/kernel.h> |
| 48 | #include <linux/module.h> |
| 49 | #include <linux/pci.h> |
| 50 | #include <linux/init.h> |
| 51 | #include <linux/blkdev.h> |
| 52 | #include <linux/delay.h> |
| 53 | #include <linux/interrupt.h> |
Andrew Morton | 8d8b600 | 2008-02-04 23:43:44 -0800 | [diff] [blame] | 54 | #include <linux/dmapool.h> |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 55 | #include <linux/dma-mapping.h> |
Jeff Garzik | a9524a7 | 2005-10-30 14:39:11 -0500 | [diff] [blame] | 56 | #include <linux/device.h> |
Saeed Bishara | f351b2d | 2008-02-01 18:08:03 -0500 | [diff] [blame] | 57 | #include <linux/platform_device.h> |
| 58 | #include <linux/ata_platform.h> |
Lennert Buytenhek | 15a3263 | 2008-03-27 14:51:39 -0400 | [diff] [blame] | 59 | #include <linux/mbus.h> |
Mark Lord | c46938c | 2008-05-02 14:02:28 -0400 | [diff] [blame] | 60 | #include <linux/bitops.h> |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 61 | #include <scsi/scsi_host.h> |
Jeff Garzik | 193515d | 2005-11-07 00:59:37 -0500 | [diff] [blame] | 62 | #include <scsi/scsi_cmnd.h> |
Jeff Garzik | 6c08772 | 2007-10-12 00:16:23 -0400 | [diff] [blame] | 63 | #include <scsi/scsi_device.h> |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 64 | #include <linux/libata.h> |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 65 | |
| 66 | #define DRV_NAME "sata_mv" |
Mark Lord | 2b748a0 | 2009-03-10 22:01:17 -0400 | [diff] [blame^] | 67 | #define DRV_VERSION "1.27" |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 68 | |
Mark Lord | 40f21b1 | 2009-03-10 18:51:04 -0400 | [diff] [blame] | 69 | /* |
| 70 | * module options |
| 71 | */ |
| 72 | |
| 73 | static int msi; |
| 74 | #ifdef CONFIG_PCI |
| 75 | module_param(msi, int, S_IRUGO); |
| 76 | MODULE_PARM_DESC(msi, "Enable use of PCI MSI (0=off, 1=on)"); |
| 77 | #endif |
| 78 | |
Mark Lord | 2b748a0 | 2009-03-10 22:01:17 -0400 | [diff] [blame^] | 79 | static int irq_coalescing_io_count; |
| 80 | module_param(irq_coalescing_io_count, int, S_IRUGO); |
| 81 | MODULE_PARM_DESC(irq_coalescing_io_count, |
| 82 | "IRQ coalescing I/O count threshold (0..255)"); |
| 83 | |
| 84 | static int irq_coalescing_usecs; |
| 85 | module_param(irq_coalescing_usecs, int, S_IRUGO); |
| 86 | MODULE_PARM_DESC(irq_coalescing_usecs, |
| 87 | "IRQ coalescing time threshold in usecs"); |
| 88 | |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 89 | enum { |
| 90 | /* BAR's are enumerated in terms of pci_resource_start() terms */ |
| 91 | MV_PRIMARY_BAR = 0, /* offset 0x10: memory space */ |
| 92 | MV_IO_BAR = 2, /* offset 0x18: IO space */ |
| 93 | MV_MISC_BAR = 3, /* offset 0x1c: FLASH, NVRAM, SRAM */ |
| 94 | |
| 95 | MV_MAJOR_REG_AREA_SZ = 0x10000, /* 64KB */ |
| 96 | MV_MINOR_REG_AREA_SZ = 0x2000, /* 8KB */ |
| 97 | |
Mark Lord | 2b748a0 | 2009-03-10 22:01:17 -0400 | [diff] [blame^] | 98 | /* For use with both IRQ coalescing methods ("all ports" or "per-HC" */ |
| 99 | COAL_CLOCKS_PER_USEC = 150, /* for calculating COAL_TIMEs */ |
| 100 | MAX_COAL_TIME_THRESHOLD = ((1 << 24) - 1), /* internal clocks count */ |
| 101 | MAX_COAL_IO_COUNT = 255, /* completed I/O count */ |
| 102 | |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 103 | MV_PCI_REG_BASE = 0, |
Mark Lord | 615ab95 | 2006-05-19 16:24:56 -0400 | [diff] [blame] | 104 | |
Mark Lord | 2b748a0 | 2009-03-10 22:01:17 -0400 | [diff] [blame^] | 105 | /* |
| 106 | * Per-chip ("all ports") interrupt coalescing feature. |
| 107 | * This is only for GEN_II / GEN_IIE hardware. |
| 108 | * |
| 109 | * Coalescing defers the interrupt until either the IO_THRESHOLD |
| 110 | * (count of completed I/Os) is met, or the TIME_THRESHOLD is met. |
| 111 | */ |
| 112 | MV_COAL_REG_BASE = 0x18000, |
| 113 | MV_IRQ_COAL_CAUSE = (MV_COAL_REG_BASE + 0x08), |
| 114 | ALL_PORTS_COAL_IRQ = (1 << 4), /* all ports irq event */ |
| 115 | |
| 116 | MV_IRQ_COAL_IO_THRESHOLD = (MV_COAL_REG_BASE + 0xcc), |
| 117 | MV_IRQ_COAL_TIME_THRESHOLD = (MV_COAL_REG_BASE + 0xd0), |
| 118 | |
| 119 | /* |
| 120 | * Registers for the (unused here) transaction coalescing feature: |
| 121 | */ |
| 122 | MV_TRAN_COAL_CAUSE_LO = (MV_COAL_REG_BASE + 0x88), |
| 123 | MV_TRAN_COAL_CAUSE_HI = (MV_COAL_REG_BASE + 0x8c), |
| 124 | |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 125 | MV_SATAHC0_REG_BASE = 0x20000, |
Mark Lord | 8e7decd | 2008-05-02 02:07:51 -0400 | [diff] [blame] | 126 | MV_FLASH_CTL_OFS = 0x1046c, |
| 127 | MV_GPIO_PORT_CTL_OFS = 0x104f0, |
| 128 | MV_RESET_CFG_OFS = 0x180d8, |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 129 | |
| 130 | MV_PCI_REG_SZ = MV_MAJOR_REG_AREA_SZ, |
| 131 | MV_SATAHC_REG_SZ = MV_MAJOR_REG_AREA_SZ, |
| 132 | MV_SATAHC_ARBTR_REG_SZ = MV_MINOR_REG_AREA_SZ, /* arbiter */ |
| 133 | MV_PORT_REG_SZ = MV_MINOR_REG_AREA_SZ, |
| 134 | |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 135 | MV_MAX_Q_DEPTH = 32, |
| 136 | MV_MAX_Q_DEPTH_MASK = MV_MAX_Q_DEPTH - 1, |
| 137 | |
| 138 | /* CRQB needs alignment on a 1KB boundary. Size == 1KB |
| 139 | * CRPB needs alignment on a 256B boundary. Size == 256B |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 140 | * ePRD (SG) entries need alignment on a 16B boundary. Size == 16B |
| 141 | */ |
| 142 | MV_CRQB_Q_SZ = (32 * MV_MAX_Q_DEPTH), |
| 143 | MV_CRPB_Q_SZ = (8 * MV_MAX_Q_DEPTH), |
Mark Lord | da2fa9b | 2008-01-26 18:32:45 -0500 | [diff] [blame] | 144 | MV_MAX_SG_CT = 256, |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 145 | MV_SG_TBL_SZ = (16 * MV_MAX_SG_CT), |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 146 | |
Mark Lord | 352fab7 | 2008-04-19 14:43:42 -0400 | [diff] [blame] | 147 | /* Determine hc from 0-7 port: hc = port >> MV_PORT_HC_SHIFT */ |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 148 | MV_PORT_HC_SHIFT = 2, |
Mark Lord | 352fab7 | 2008-04-19 14:43:42 -0400 | [diff] [blame] | 149 | MV_PORTS_PER_HC = (1 << MV_PORT_HC_SHIFT), /* 4 */ |
| 150 | /* Determine hc port from 0-7 port: hardport = port & MV_PORT_MASK */ |
| 151 | MV_PORT_MASK = (MV_PORTS_PER_HC - 1), /* 3 */ |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 152 | |
| 153 | /* Host Flags */ |
| 154 | MV_FLAG_DUAL_HC = (1 << 30), /* two SATA Host Controllers */ |
Saeed Bishara | 7bb3c52 | 2008-01-30 11:50:45 -1100 | [diff] [blame] | 155 | |
Jeff Garzik | c5d3e45 | 2007-07-11 18:30:50 -0400 | [diff] [blame] | 156 | MV_COMMON_FLAGS = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY | |
Mark Lord | 91b1a84 | 2009-01-30 18:46:39 -0500 | [diff] [blame] | 157 | ATA_FLAG_MMIO | ATA_FLAG_PIO_POLLING, |
Mark Lord | ad3aef5 | 2008-05-14 09:21:43 -0400 | [diff] [blame] | 158 | |
Mark Lord | 91b1a84 | 2009-01-30 18:46:39 -0500 | [diff] [blame] | 159 | MV_GEN_I_FLAGS = MV_COMMON_FLAGS | ATA_FLAG_NO_ATAPI, |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 160 | |
Mark Lord | 40f21b1 | 2009-03-10 18:51:04 -0400 | [diff] [blame] | 161 | MV_GEN_II_FLAGS = MV_COMMON_FLAGS | ATA_FLAG_NCQ | |
| 162 | ATA_FLAG_PMP | ATA_FLAG_ACPI_SATA, |
Mark Lord | 91b1a84 | 2009-01-30 18:46:39 -0500 | [diff] [blame] | 163 | |
| 164 | MV_GEN_IIE_FLAGS = MV_GEN_II_FLAGS | ATA_FLAG_AN, |
Mark Lord | ad3aef5 | 2008-05-14 09:21:43 -0400 | [diff] [blame] | 165 | |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 166 | CRQB_FLAG_READ = (1 << 0), |
| 167 | CRQB_TAG_SHIFT = 1, |
Jeff Garzik | c5d3e45 | 2007-07-11 18:30:50 -0400 | [diff] [blame] | 168 | CRQB_IOID_SHIFT = 6, /* CRQB Gen-II/IIE IO Id shift */ |
Mark Lord | e12bef5 | 2008-03-31 19:33:56 -0400 | [diff] [blame] | 169 | CRQB_PMP_SHIFT = 12, /* CRQB Gen-II/IIE PMP shift */ |
Jeff Garzik | c5d3e45 | 2007-07-11 18:30:50 -0400 | [diff] [blame] | 170 | CRQB_HOSTQ_SHIFT = 17, /* CRQB Gen-II/IIE HostQueTag shift */ |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 171 | CRQB_CMD_ADDR_SHIFT = 8, |
| 172 | CRQB_CMD_CS = (0x2 << 11), |
| 173 | CRQB_CMD_LAST = (1 << 15), |
| 174 | |
| 175 | CRPB_FLAG_STATUS_SHIFT = 8, |
Jeff Garzik | c5d3e45 | 2007-07-11 18:30:50 -0400 | [diff] [blame] | 176 | CRPB_IOID_SHIFT_6 = 5, /* CRPB Gen-II IO Id shift */ |
| 177 | CRPB_IOID_SHIFT_7 = 7, /* CRPB Gen-IIE IO Id shift */ |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 178 | |
| 179 | EPRD_FLAG_END_OF_TBL = (1 << 31), |
| 180 | |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 181 | /* PCI interface registers */ |
| 182 | |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 183 | PCI_COMMAND_OFS = 0xc00, |
Mark Lord | 8e7decd | 2008-05-02 02:07:51 -0400 | [diff] [blame] | 184 | PCI_COMMAND_MRDTRIG = (1 << 7), /* PCI Master Read Trigger */ |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 185 | |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 186 | PCI_MAIN_CMD_STS_OFS = 0xd30, |
| 187 | STOP_PCI_MASTER = (1 << 2), |
| 188 | PCI_MASTER_EMPTY = (1 << 3), |
| 189 | GLOB_SFT_RST = (1 << 4), |
| 190 | |
Mark Lord | 8e7decd | 2008-05-02 02:07:51 -0400 | [diff] [blame] | 191 | MV_PCI_MODE_OFS = 0xd00, |
| 192 | MV_PCI_MODE_MASK = 0x30, |
| 193 | |
Jeff Garzik | 522479f | 2005-11-12 22:14:02 -0500 | [diff] [blame] | 194 | MV_PCI_EXP_ROM_BAR_CTL = 0xd2c, |
| 195 | MV_PCI_DISC_TIMER = 0xd04, |
| 196 | MV_PCI_MSI_TRIGGER = 0xc38, |
| 197 | MV_PCI_SERR_MASK = 0xc28, |
Mark Lord | 8e7decd | 2008-05-02 02:07:51 -0400 | [diff] [blame] | 198 | MV_PCI_XBAR_TMOUT_OFS = 0x1d04, |
Jeff Garzik | 522479f | 2005-11-12 22:14:02 -0500 | [diff] [blame] | 199 | MV_PCI_ERR_LOW_ADDRESS = 0x1d40, |
| 200 | MV_PCI_ERR_HIGH_ADDRESS = 0x1d44, |
| 201 | MV_PCI_ERR_ATTRIBUTE = 0x1d48, |
| 202 | MV_PCI_ERR_COMMAND = 0x1d50, |
| 203 | |
Mark Lord | 02a121d | 2007-12-01 13:07:22 -0500 | [diff] [blame] | 204 | PCI_IRQ_CAUSE_OFS = 0x1d58, |
| 205 | PCI_IRQ_MASK_OFS = 0x1d5c, |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 206 | PCI_UNMASK_ALL_IRQS = 0x7fffff, /* bits 22-0 */ |
| 207 | |
Mark Lord | 02a121d | 2007-12-01 13:07:22 -0500 | [diff] [blame] | 208 | PCIE_IRQ_CAUSE_OFS = 0x1900, |
| 209 | PCIE_IRQ_MASK_OFS = 0x1910, |
Mark Lord | 646a4da | 2008-01-26 18:30:37 -0500 | [diff] [blame] | 210 | PCIE_UNMASK_ALL_IRQS = 0x40a, /* assorted bits */ |
Mark Lord | 02a121d | 2007-12-01 13:07:22 -0500 | [diff] [blame] | 211 | |
Mark Lord | 7368f91 | 2008-04-25 11:24:24 -0400 | [diff] [blame] | 212 | /* Host Controller Main Interrupt Cause/Mask registers (1 per-chip) */ |
| 213 | PCI_HC_MAIN_IRQ_CAUSE_OFS = 0x1d60, |
| 214 | PCI_HC_MAIN_IRQ_MASK_OFS = 0x1d64, |
| 215 | SOC_HC_MAIN_IRQ_CAUSE_OFS = 0x20020, |
| 216 | SOC_HC_MAIN_IRQ_MASK_OFS = 0x20024, |
Mark Lord | 40f21b1 | 2009-03-10 18:51:04 -0400 | [diff] [blame] | 217 | ERR_IRQ = (1 << 0), /* shift by (2 * port #) */ |
| 218 | DONE_IRQ = (1 << 1), /* shift by (2 * port #) */ |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 219 | HC0_IRQ_PEND = 0x1ff, /* bits 0-8 = HC0's ports */ |
| 220 | HC_SHIFT = 9, /* bits 9-17 = HC1's ports */ |
Mark Lord | 2b748a0 | 2009-03-10 22:01:17 -0400 | [diff] [blame^] | 221 | DONE_IRQ_0_3 = 0x000000aa, /* DONE_IRQ ports 0,1,2,3 */ |
| 222 | DONE_IRQ_4_7 = (DONE_IRQ_0_3 << HC_SHIFT), /* 4,5,6,7 */ |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 223 | PCI_ERR = (1 << 18), |
Mark Lord | 40f21b1 | 2009-03-10 18:51:04 -0400 | [diff] [blame] | 224 | TRAN_COAL_LO_DONE = (1 << 19), /* transaction coalescing */ |
| 225 | TRAN_COAL_HI_DONE = (1 << 20), /* transaction coalescing */ |
| 226 | PORTS_0_3_COAL_DONE = (1 << 8), /* HC0 IRQ coalescing */ |
| 227 | PORTS_4_7_COAL_DONE = (1 << 17), /* HC1 IRQ coalescing */ |
| 228 | ALL_PORTS_COAL_DONE = (1 << 21), /* GEN_II(E) IRQ coalescing */ |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 229 | GPIO_INT = (1 << 22), |
| 230 | SELF_INT = (1 << 23), |
| 231 | TWSI_INT = (1 << 24), |
| 232 | HC_MAIN_RSVD = (0x7f << 25), /* bits 31-25 */ |
Jeff Garzik | fb621e2 | 2007-02-25 04:19:45 -0500 | [diff] [blame] | 233 | HC_MAIN_RSVD_5 = (0x1fff << 19), /* bits 31-19 */ |
Mark Lord | e12bef5 | 2008-03-31 19:33:56 -0400 | [diff] [blame] | 234 | HC_MAIN_RSVD_SOC = (0x3fffffb << 6), /* bits 31-9, 7-6 */ |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 235 | |
| 236 | /* SATAHC registers */ |
| 237 | HC_CFG_OFS = 0, |
| 238 | |
| 239 | HC_IRQ_CAUSE_OFS = 0x14, |
Mark Lord | 352fab7 | 2008-04-19 14:43:42 -0400 | [diff] [blame] | 240 | DMA_IRQ = (1 << 0), /* shift by port # */ |
| 241 | HC_COAL_IRQ = (1 << 4), /* IRQ coalescing */ |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 242 | DEV_IRQ = (1 << 8), /* shift by port # */ |
| 243 | |
Mark Lord | 2b748a0 | 2009-03-10 22:01:17 -0400 | [diff] [blame^] | 244 | /* |
| 245 | * Per-HC (Host-Controller) interrupt coalescing feature. |
| 246 | * This is present on all chip generations. |
| 247 | * |
| 248 | * Coalescing defers the interrupt until either the IO_THRESHOLD |
| 249 | * (count of completed I/Os) is met, or the TIME_THRESHOLD is met. |
| 250 | */ |
| 251 | HC_IRQ_COAL_IO_THRESHOLD_OFS = 0x000c, |
| 252 | HC_IRQ_COAL_TIME_THRESHOLD_OFS = 0x0010, |
| 253 | |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 254 | /* Shadow block registers */ |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 255 | SHD_BLK_OFS = 0x100, |
| 256 | SHD_CTL_AST_OFS = 0x20, /* ofs from SHD_BLK_OFS */ |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 257 | |
| 258 | /* SATA registers */ |
| 259 | SATA_STATUS_OFS = 0x300, /* ctrl, err regs follow status */ |
| 260 | SATA_ACTIVE_OFS = 0x350, |
Mark Lord | 0c58912 | 2008-01-26 18:31:16 -0500 | [diff] [blame] | 261 | SATA_FIS_IRQ_CAUSE_OFS = 0x364, |
Mark Lord | c443c50 | 2008-05-14 09:24:39 -0400 | [diff] [blame] | 262 | SATA_FIS_IRQ_AN = (1 << 9), /* async notification */ |
Mark Lord | 17c5aab | 2008-04-16 14:56:51 -0400 | [diff] [blame] | 263 | |
Mark Lord | e12bef5 | 2008-03-31 19:33:56 -0400 | [diff] [blame] | 264 | LTMODE_OFS = 0x30c, |
Mark Lord | 17c5aab | 2008-04-16 14:56:51 -0400 | [diff] [blame] | 265 | LTMODE_BIT8 = (1 << 8), /* unknown, but necessary */ |
| 266 | |
Jeff Garzik | 47c2b67 | 2005-11-12 21:13:17 -0500 | [diff] [blame] | 267 | PHY_MODE3 = 0x310, |
Jeff Garzik | bca1c4e | 2005-11-12 12:48:15 -0500 | [diff] [blame] | 268 | PHY_MODE4 = 0x314, |
Mark Lord | ba069e3 | 2008-05-31 16:46:34 -0400 | [diff] [blame] | 269 | PHY_MODE4_CFG_MASK = 0x00000003, /* phy internal config field */ |
| 270 | PHY_MODE4_CFG_VALUE = 0x00000001, /* phy internal config field */ |
| 271 | PHY_MODE4_RSVD_ZEROS = 0x5de3fffa, /* Gen2e always write zeros */ |
| 272 | PHY_MODE4_RSVD_ONES = 0x00000005, /* Gen2e always write ones */ |
| 273 | |
Jeff Garzik | bca1c4e | 2005-11-12 12:48:15 -0500 | [diff] [blame] | 274 | PHY_MODE2 = 0x330, |
Mark Lord | e12bef5 | 2008-03-31 19:33:56 -0400 | [diff] [blame] | 275 | SATA_IFCTL_OFS = 0x344, |
Mark Lord | 8e7decd | 2008-05-02 02:07:51 -0400 | [diff] [blame] | 276 | SATA_TESTCTL_OFS = 0x348, |
Mark Lord | e12bef5 | 2008-03-31 19:33:56 -0400 | [diff] [blame] | 277 | SATA_IFSTAT_OFS = 0x34c, |
| 278 | VENDOR_UNIQUE_FIS_OFS = 0x35c, |
Mark Lord | 17c5aab | 2008-04-16 14:56:51 -0400 | [diff] [blame] | 279 | |
Mark Lord | 8e7decd | 2008-05-02 02:07:51 -0400 | [diff] [blame] | 280 | FISCFG_OFS = 0x360, |
| 281 | FISCFG_WAIT_DEV_ERR = (1 << 8), /* wait for host on DevErr */ |
| 282 | FISCFG_SINGLE_SYNC = (1 << 16), /* SYNC on DMA activation */ |
Mark Lord | 17c5aab | 2008-04-16 14:56:51 -0400 | [diff] [blame] | 283 | |
Jeff Garzik | c9d3913 | 2005-11-13 17:47:51 -0500 | [diff] [blame] | 284 | MV5_PHY_MODE = 0x74, |
Mark Lord | 8e7decd | 2008-05-02 02:07:51 -0400 | [diff] [blame] | 285 | MV5_LTMODE_OFS = 0x30, |
| 286 | MV5_PHY_CTL_OFS = 0x0C, |
| 287 | SATA_INTERFACE_CFG_OFS = 0x050, |
Jeff Garzik | bca1c4e | 2005-11-12 12:48:15 -0500 | [diff] [blame] | 288 | |
| 289 | MV_M2_PREAMP_MASK = 0x7e0, |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 290 | |
| 291 | /* Port registers */ |
| 292 | EDMA_CFG_OFS = 0, |
Mark Lord | 0c58912 | 2008-01-26 18:31:16 -0500 | [diff] [blame] | 293 | EDMA_CFG_Q_DEPTH = 0x1f, /* max device queue depth */ |
| 294 | EDMA_CFG_NCQ = (1 << 5), /* for R/W FPDMA queued */ |
| 295 | EDMA_CFG_NCQ_GO_ON_ERR = (1 << 14), /* continue on error */ |
| 296 | EDMA_CFG_RD_BRST_EXT = (1 << 11), /* read burst 512B */ |
| 297 | EDMA_CFG_WR_BUFF_LEN = (1 << 13), /* write buffer 512B */ |
Mark Lord | e12bef5 | 2008-03-31 19:33:56 -0400 | [diff] [blame] | 298 | EDMA_CFG_EDMA_FBS = (1 << 16), /* EDMA FIS-Based Switching */ |
| 299 | EDMA_CFG_FBS = (1 << 26), /* FIS-Based Switching */ |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 300 | |
| 301 | EDMA_ERR_IRQ_CAUSE_OFS = 0x8, |
| 302 | EDMA_ERR_IRQ_MASK_OFS = 0xc, |
Jeff Garzik | 6c1153e | 2007-07-13 15:20:15 -0400 | [diff] [blame] | 303 | EDMA_ERR_D_PAR = (1 << 0), /* UDMA data parity err */ |
| 304 | EDMA_ERR_PRD_PAR = (1 << 1), /* UDMA PRD parity err */ |
| 305 | EDMA_ERR_DEV = (1 << 2), /* device error */ |
| 306 | EDMA_ERR_DEV_DCON = (1 << 3), /* device disconnect */ |
| 307 | EDMA_ERR_DEV_CON = (1 << 4), /* device connected */ |
| 308 | EDMA_ERR_SERR = (1 << 5), /* SError bits [WBDST] raised */ |
Jeff Garzik | c5d3e45 | 2007-07-11 18:30:50 -0400 | [diff] [blame] | 309 | EDMA_ERR_SELF_DIS = (1 << 7), /* Gen II/IIE self-disable */ |
| 310 | EDMA_ERR_SELF_DIS_5 = (1 << 8), /* Gen I self-disable */ |
Jeff Garzik | 6c1153e | 2007-07-13 15:20:15 -0400 | [diff] [blame] | 311 | EDMA_ERR_BIST_ASYNC = (1 << 8), /* BIST FIS or Async Notify */ |
Jeff Garzik | c5d3e45 | 2007-07-11 18:30:50 -0400 | [diff] [blame] | 312 | EDMA_ERR_TRANS_IRQ_7 = (1 << 8), /* Gen IIE transprt layer irq */ |
Jeff Garzik | 6c1153e | 2007-07-13 15:20:15 -0400 | [diff] [blame] | 313 | EDMA_ERR_CRQB_PAR = (1 << 9), /* CRQB parity error */ |
| 314 | EDMA_ERR_CRPB_PAR = (1 << 10), /* CRPB parity error */ |
| 315 | EDMA_ERR_INTRL_PAR = (1 << 11), /* internal parity error */ |
| 316 | EDMA_ERR_IORDY = (1 << 12), /* IORdy timeout */ |
Mark Lord | 646a4da | 2008-01-26 18:30:37 -0500 | [diff] [blame] | 317 | |
Jeff Garzik | 6c1153e | 2007-07-13 15:20:15 -0400 | [diff] [blame] | 318 | EDMA_ERR_LNK_CTRL_RX = (0xf << 13), /* link ctrl rx error */ |
Mark Lord | 646a4da | 2008-01-26 18:30:37 -0500 | [diff] [blame] | 319 | EDMA_ERR_LNK_CTRL_RX_0 = (1 << 13), /* transient: CRC err */ |
| 320 | EDMA_ERR_LNK_CTRL_RX_1 = (1 << 14), /* transient: FIFO err */ |
| 321 | EDMA_ERR_LNK_CTRL_RX_2 = (1 << 15), /* fatal: caught SYNC */ |
| 322 | EDMA_ERR_LNK_CTRL_RX_3 = (1 << 16), /* transient: FIS rx err */ |
| 323 | |
Jeff Garzik | 6c1153e | 2007-07-13 15:20:15 -0400 | [diff] [blame] | 324 | EDMA_ERR_LNK_DATA_RX = (0xf << 17), /* link data rx error */ |
Mark Lord | 646a4da | 2008-01-26 18:30:37 -0500 | [diff] [blame] | 325 | |
Jeff Garzik | 6c1153e | 2007-07-13 15:20:15 -0400 | [diff] [blame] | 326 | EDMA_ERR_LNK_CTRL_TX = (0x1f << 21), /* link ctrl tx error */ |
Mark Lord | 646a4da | 2008-01-26 18:30:37 -0500 | [diff] [blame] | 327 | EDMA_ERR_LNK_CTRL_TX_0 = (1 << 21), /* transient: CRC err */ |
| 328 | EDMA_ERR_LNK_CTRL_TX_1 = (1 << 22), /* transient: FIFO err */ |
| 329 | EDMA_ERR_LNK_CTRL_TX_2 = (1 << 23), /* transient: caught SYNC */ |
| 330 | EDMA_ERR_LNK_CTRL_TX_3 = (1 << 24), /* transient: caught DMAT */ |
| 331 | EDMA_ERR_LNK_CTRL_TX_4 = (1 << 25), /* transient: FIS collision */ |
| 332 | |
Jeff Garzik | 6c1153e | 2007-07-13 15:20:15 -0400 | [diff] [blame] | 333 | EDMA_ERR_LNK_DATA_TX = (0x1f << 26), /* link data tx error */ |
Mark Lord | 646a4da | 2008-01-26 18:30:37 -0500 | [diff] [blame] | 334 | |
Jeff Garzik | 6c1153e | 2007-07-13 15:20:15 -0400 | [diff] [blame] | 335 | EDMA_ERR_TRANS_PROTO = (1 << 31), /* transport protocol error */ |
Jeff Garzik | c5d3e45 | 2007-07-11 18:30:50 -0400 | [diff] [blame] | 336 | EDMA_ERR_OVERRUN_5 = (1 << 5), |
| 337 | EDMA_ERR_UNDERRUN_5 = (1 << 6), |
Mark Lord | 646a4da | 2008-01-26 18:30:37 -0500 | [diff] [blame] | 338 | |
| 339 | EDMA_ERR_IRQ_TRANSIENT = EDMA_ERR_LNK_CTRL_RX_0 | |
| 340 | EDMA_ERR_LNK_CTRL_RX_1 | |
| 341 | EDMA_ERR_LNK_CTRL_RX_3 | |
Mark Lord | 85afb93 | 2008-04-19 14:54:41 -0400 | [diff] [blame] | 342 | EDMA_ERR_LNK_CTRL_TX, |
Mark Lord | 646a4da | 2008-01-26 18:30:37 -0500 | [diff] [blame] | 343 | |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 344 | EDMA_EH_FREEZE = EDMA_ERR_D_PAR | |
| 345 | EDMA_ERR_PRD_PAR | |
| 346 | EDMA_ERR_DEV_DCON | |
| 347 | EDMA_ERR_DEV_CON | |
| 348 | EDMA_ERR_SERR | |
| 349 | EDMA_ERR_SELF_DIS | |
Jeff Garzik | 6c1153e | 2007-07-13 15:20:15 -0400 | [diff] [blame] | 350 | EDMA_ERR_CRQB_PAR | |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 351 | EDMA_ERR_CRPB_PAR | |
| 352 | EDMA_ERR_INTRL_PAR | |
| 353 | EDMA_ERR_IORDY | |
| 354 | EDMA_ERR_LNK_CTRL_RX_2 | |
| 355 | EDMA_ERR_LNK_DATA_RX | |
| 356 | EDMA_ERR_LNK_DATA_TX | |
| 357 | EDMA_ERR_TRANS_PROTO, |
Mark Lord | e12bef5 | 2008-03-31 19:33:56 -0400 | [diff] [blame] | 358 | |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 359 | EDMA_EH_FREEZE_5 = EDMA_ERR_D_PAR | |
| 360 | EDMA_ERR_PRD_PAR | |
| 361 | EDMA_ERR_DEV_DCON | |
| 362 | EDMA_ERR_DEV_CON | |
| 363 | EDMA_ERR_OVERRUN_5 | |
| 364 | EDMA_ERR_UNDERRUN_5 | |
| 365 | EDMA_ERR_SELF_DIS_5 | |
Jeff Garzik | 6c1153e | 2007-07-13 15:20:15 -0400 | [diff] [blame] | 366 | EDMA_ERR_CRQB_PAR | |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 367 | EDMA_ERR_CRPB_PAR | |
| 368 | EDMA_ERR_INTRL_PAR | |
| 369 | EDMA_ERR_IORDY, |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 370 | |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 371 | EDMA_REQ_Q_BASE_HI_OFS = 0x10, |
| 372 | EDMA_REQ_Q_IN_PTR_OFS = 0x14, /* also contains BASE_LO */ |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 373 | |
| 374 | EDMA_REQ_Q_OUT_PTR_OFS = 0x18, |
| 375 | EDMA_REQ_Q_PTR_SHIFT = 5, |
| 376 | |
| 377 | EDMA_RSP_Q_BASE_HI_OFS = 0x1c, |
| 378 | EDMA_RSP_Q_IN_PTR_OFS = 0x20, |
| 379 | EDMA_RSP_Q_OUT_PTR_OFS = 0x24, /* also contains BASE_LO */ |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 380 | EDMA_RSP_Q_PTR_SHIFT = 3, |
| 381 | |
Jeff Garzik | 0ea9e17 | 2007-07-13 17:06:45 -0400 | [diff] [blame] | 382 | EDMA_CMD_OFS = 0x28, /* EDMA command register */ |
| 383 | EDMA_EN = (1 << 0), /* enable EDMA */ |
| 384 | EDMA_DS = (1 << 1), /* disable EDMA; self-negated */ |
Mark Lord | 8e7decd | 2008-05-02 02:07:51 -0400 | [diff] [blame] | 385 | EDMA_RESET = (1 << 2), /* reset eng/trans/link/phy */ |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 386 | |
Mark Lord | 8e7decd | 2008-05-02 02:07:51 -0400 | [diff] [blame] | 387 | EDMA_STATUS_OFS = 0x30, /* EDMA engine status */ |
| 388 | EDMA_STATUS_CACHE_EMPTY = (1 << 6), /* GenIIe command cache empty */ |
| 389 | EDMA_STATUS_IDLE = (1 << 7), /* GenIIe EDMA enabled/idle */ |
| 390 | |
| 391 | EDMA_IORDY_TMOUT_OFS = 0x34, |
| 392 | EDMA_ARB_CFG_OFS = 0x38, |
| 393 | |
| 394 | EDMA_HALTCOND_OFS = 0x60, /* GenIIe halt conditions */ |
Mark Lord | c01e8a2 | 2009-02-25 15:14:48 -0500 | [diff] [blame] | 395 | EDMA_UNKNOWN_RSVD_OFS = 0x6C, /* GenIIe unknown/reserved */ |
Mark Lord | da14265 | 2009-01-30 18:51:54 -0500 | [diff] [blame] | 396 | |
| 397 | BMDMA_CMD_OFS = 0x224, /* bmdma command register */ |
| 398 | BMDMA_STATUS_OFS = 0x228, /* bmdma status register */ |
| 399 | BMDMA_PRD_LOW_OFS = 0x22c, /* bmdma PRD addr 31:0 */ |
| 400 | BMDMA_PRD_HIGH_OFS = 0x230, /* bmdma PRD addr 63:32 */ |
| 401 | |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 402 | /* Host private flags (hp_flags) */ |
| 403 | MV_HP_FLAG_MSI = (1 << 0), |
Jeff Garzik | 47c2b67 | 2005-11-12 21:13:17 -0500 | [diff] [blame] | 404 | MV_HP_ERRATA_50XXB0 = (1 << 1), |
| 405 | MV_HP_ERRATA_50XXB2 = (1 << 2), |
| 406 | MV_HP_ERRATA_60X1B2 = (1 << 3), |
| 407 | MV_HP_ERRATA_60X1C0 = (1 << 4), |
Jeff Garzik | 0ea9e17 | 2007-07-13 17:06:45 -0400 | [diff] [blame] | 408 | MV_HP_GEN_I = (1 << 6), /* Generation I: 50xx */ |
| 409 | MV_HP_GEN_II = (1 << 7), /* Generation II: 60xx */ |
| 410 | MV_HP_GEN_IIE = (1 << 8), /* Generation IIE: 6042/7042 */ |
Mark Lord | 02a121d | 2007-12-01 13:07:22 -0500 | [diff] [blame] | 411 | MV_HP_PCIE = (1 << 9), /* PCIe bus/regs: 7042 */ |
Mark Lord | 616d4a9 | 2008-05-02 02:08:32 -0400 | [diff] [blame] | 412 | MV_HP_CUT_THROUGH = (1 << 10), /* can use EDMA cut-through */ |
Mark Lord | 1f39847 | 2008-05-27 17:54:48 -0400 | [diff] [blame] | 413 | MV_HP_FLAG_SOC = (1 << 11), /* SystemOnChip, no PCI */ |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 414 | |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 415 | /* Port private flags (pp_flags) */ |
Jeff Garzik | 0ea9e17 | 2007-07-13 17:06:45 -0400 | [diff] [blame] | 416 | MV_PP_FLAG_EDMA_EN = (1 << 0), /* is EDMA engine enabled? */ |
Mark Lord | 7210916 | 2008-01-26 18:31:33 -0500 | [diff] [blame] | 417 | MV_PP_FLAG_NCQ_EN = (1 << 1), /* is EDMA set up for NCQ? */ |
Mark Lord | 00f42ea | 2008-05-02 02:11:45 -0400 | [diff] [blame] | 418 | MV_PP_FLAG_FBS_EN = (1 << 2), /* is EDMA set up for FBS? */ |
Mark Lord | 29d187b | 2008-05-02 02:15:37 -0400 | [diff] [blame] | 419 | MV_PP_FLAG_DELAYED_EH = (1 << 3), /* delayed dev err handling */ |
Mark Lord | d16ab3f | 2009-02-25 15:17:43 -0500 | [diff] [blame] | 420 | MV_PP_FLAG_FAKE_ATA_BUSY = (1 << 4), /* ignore initial ATA_DRDY */ |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 421 | }; |
| 422 | |
Jeff Garzik | ee9ccdf | 2007-07-12 15:51:22 -0400 | [diff] [blame] | 423 | #define IS_GEN_I(hpriv) ((hpriv)->hp_flags & MV_HP_GEN_I) |
| 424 | #define IS_GEN_II(hpriv) ((hpriv)->hp_flags & MV_HP_GEN_II) |
Jeff Garzik | e4e7b89 | 2006-01-31 12:18:41 -0500 | [diff] [blame] | 425 | #define IS_GEN_IIE(hpriv) ((hpriv)->hp_flags & MV_HP_GEN_IIE) |
Mark Lord | 8e7decd | 2008-05-02 02:07:51 -0400 | [diff] [blame] | 426 | #define IS_PCIE(hpriv) ((hpriv)->hp_flags & MV_HP_PCIE) |
Mark Lord | 1f39847 | 2008-05-27 17:54:48 -0400 | [diff] [blame] | 427 | #define IS_SOC(hpriv) ((hpriv)->hp_flags & MV_HP_FLAG_SOC) |
Jeff Garzik | bca1c4e | 2005-11-12 12:48:15 -0500 | [diff] [blame] | 428 | |
Lennert Buytenhek | 15a3263 | 2008-03-27 14:51:39 -0400 | [diff] [blame] | 429 | #define WINDOW_CTRL(i) (0x20030 + ((i) << 4)) |
| 430 | #define WINDOW_BASE(i) (0x20034 + ((i) << 4)) |
| 431 | |
Jeff Garzik | 095fec8 | 2005-11-12 09:50:49 -0500 | [diff] [blame] | 432 | enum { |
Jeff Garzik | baf14aa | 2007-10-09 13:51:57 -0400 | [diff] [blame] | 433 | /* DMA boundary 0xffff is required by the s/g splitting |
| 434 | * we need on /length/ in mv_fill-sg(). |
| 435 | */ |
| 436 | MV_DMA_BOUNDARY = 0xffffU, |
Jeff Garzik | 095fec8 | 2005-11-12 09:50:49 -0500 | [diff] [blame] | 437 | |
Jeff Garzik | 0ea9e17 | 2007-07-13 17:06:45 -0400 | [diff] [blame] | 438 | /* mask of register bits containing lower 32 bits |
| 439 | * of EDMA request queue DMA address |
| 440 | */ |
Jeff Garzik | 095fec8 | 2005-11-12 09:50:49 -0500 | [diff] [blame] | 441 | EDMA_REQ_Q_BASE_LO_MASK = 0xfffffc00U, |
| 442 | |
Jeff Garzik | 0ea9e17 | 2007-07-13 17:06:45 -0400 | [diff] [blame] | 443 | /* ditto, for response queue */ |
Jeff Garzik | 095fec8 | 2005-11-12 09:50:49 -0500 | [diff] [blame] | 444 | EDMA_RSP_Q_BASE_LO_MASK = 0xffffff00U, |
| 445 | }; |
| 446 | |
Jeff Garzik | 522479f | 2005-11-12 22:14:02 -0500 | [diff] [blame] | 447 | enum chip_type { |
| 448 | chip_504x, |
| 449 | chip_508x, |
| 450 | chip_5080, |
| 451 | chip_604x, |
| 452 | chip_608x, |
Jeff Garzik | e4e7b89 | 2006-01-31 12:18:41 -0500 | [diff] [blame] | 453 | chip_6042, |
| 454 | chip_7042, |
Saeed Bishara | f351b2d | 2008-02-01 18:08:03 -0500 | [diff] [blame] | 455 | chip_soc, |
Jeff Garzik | 522479f | 2005-11-12 22:14:02 -0500 | [diff] [blame] | 456 | }; |
| 457 | |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 458 | /* Command ReQuest Block: 32B */ |
| 459 | struct mv_crqb { |
Mark Lord | e146987 | 2006-05-22 19:02:03 -0400 | [diff] [blame] | 460 | __le32 sg_addr; |
| 461 | __le32 sg_addr_hi; |
| 462 | __le16 ctrl_flags; |
| 463 | __le16 ata_cmd[11]; |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 464 | }; |
| 465 | |
Jeff Garzik | e4e7b89 | 2006-01-31 12:18:41 -0500 | [diff] [blame] | 466 | struct mv_crqb_iie { |
Mark Lord | e146987 | 2006-05-22 19:02:03 -0400 | [diff] [blame] | 467 | __le32 addr; |
| 468 | __le32 addr_hi; |
| 469 | __le32 flags; |
| 470 | __le32 len; |
| 471 | __le32 ata_cmd[4]; |
Jeff Garzik | e4e7b89 | 2006-01-31 12:18:41 -0500 | [diff] [blame] | 472 | }; |
| 473 | |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 474 | /* Command ResPonse Block: 8B */ |
| 475 | struct mv_crpb { |
Mark Lord | e146987 | 2006-05-22 19:02:03 -0400 | [diff] [blame] | 476 | __le16 id; |
| 477 | __le16 flags; |
| 478 | __le32 tmstmp; |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 479 | }; |
| 480 | |
| 481 | /* EDMA Physical Region Descriptor (ePRD); A.K.A. SG */ |
| 482 | struct mv_sg { |
Mark Lord | e146987 | 2006-05-22 19:02:03 -0400 | [diff] [blame] | 483 | __le32 addr; |
| 484 | __le32 flags_size; |
| 485 | __le32 addr_hi; |
| 486 | __le32 reserved; |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 487 | }; |
| 488 | |
Mark Lord | 08da175 | 2009-02-25 15:13:03 -0500 | [diff] [blame] | 489 | /* |
| 490 | * We keep a local cache of a few frequently accessed port |
| 491 | * registers here, to avoid having to read them (very slow) |
| 492 | * when switching between EDMA and non-EDMA modes. |
| 493 | */ |
| 494 | struct mv_cached_regs { |
| 495 | u32 fiscfg; |
| 496 | u32 ltmode; |
| 497 | u32 haltcond; |
Mark Lord | c01e8a2 | 2009-02-25 15:14:48 -0500 | [diff] [blame] | 498 | u32 unknown_rsvd; |
Mark Lord | 08da175 | 2009-02-25 15:13:03 -0500 | [diff] [blame] | 499 | }; |
| 500 | |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 501 | struct mv_port_priv { |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 502 | struct mv_crqb *crqb; |
| 503 | dma_addr_t crqb_dma; |
| 504 | struct mv_crpb *crpb; |
| 505 | dma_addr_t crpb_dma; |
Mark Lord | eb73d55 | 2008-01-29 13:24:00 -0500 | [diff] [blame] | 506 | struct mv_sg *sg_tbl[MV_MAX_Q_DEPTH]; |
| 507 | dma_addr_t sg_tbl_dma[MV_MAX_Q_DEPTH]; |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 508 | |
| 509 | unsigned int req_idx; |
| 510 | unsigned int resp_idx; |
| 511 | |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 512 | u32 pp_flags; |
Mark Lord | 08da175 | 2009-02-25 15:13:03 -0500 | [diff] [blame] | 513 | struct mv_cached_regs cached; |
Mark Lord | 29d187b | 2008-05-02 02:15:37 -0400 | [diff] [blame] | 514 | unsigned int delayed_eh_pmp_map; |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 515 | }; |
| 516 | |
Jeff Garzik | bca1c4e | 2005-11-12 12:48:15 -0500 | [diff] [blame] | 517 | struct mv_port_signal { |
| 518 | u32 amps; |
| 519 | u32 pre; |
| 520 | }; |
| 521 | |
Mark Lord | 02a121d | 2007-12-01 13:07:22 -0500 | [diff] [blame] | 522 | struct mv_host_priv { |
| 523 | u32 hp_flags; |
Mark Lord | 96e2c487 | 2008-05-17 13:38:00 -0400 | [diff] [blame] | 524 | u32 main_irq_mask; |
Mark Lord | 02a121d | 2007-12-01 13:07:22 -0500 | [diff] [blame] | 525 | struct mv_port_signal signal[8]; |
| 526 | const struct mv_hw_ops *ops; |
Saeed Bishara | f351b2d | 2008-02-01 18:08:03 -0500 | [diff] [blame] | 527 | int n_ports; |
| 528 | void __iomem *base; |
Mark Lord | 7368f91 | 2008-04-25 11:24:24 -0400 | [diff] [blame] | 529 | void __iomem *main_irq_cause_addr; |
| 530 | void __iomem *main_irq_mask_addr; |
Mark Lord | 02a121d | 2007-12-01 13:07:22 -0500 | [diff] [blame] | 531 | u32 irq_cause_ofs; |
| 532 | u32 irq_mask_ofs; |
| 533 | u32 unmask_all_irqs; |
Mark Lord | da2fa9b | 2008-01-26 18:32:45 -0500 | [diff] [blame] | 534 | /* |
| 535 | * These consistent DMA memory pools give us guaranteed |
| 536 | * alignment for hardware-accessed data structures, |
| 537 | * and less memory waste in accomplishing the alignment. |
| 538 | */ |
| 539 | struct dma_pool *crqb_pool; |
| 540 | struct dma_pool *crpb_pool; |
| 541 | struct dma_pool *sg_tbl_pool; |
Mark Lord | 02a121d | 2007-12-01 13:07:22 -0500 | [diff] [blame] | 542 | }; |
| 543 | |
Jeff Garzik | 47c2b67 | 2005-11-12 21:13:17 -0500 | [diff] [blame] | 544 | struct mv_hw_ops { |
Jeff Garzik | 2a47ce0 | 2005-11-12 23:05:14 -0500 | [diff] [blame] | 545 | void (*phy_errata)(struct mv_host_priv *hpriv, void __iomem *mmio, |
| 546 | unsigned int port); |
Jeff Garzik | 47c2b67 | 2005-11-12 21:13:17 -0500 | [diff] [blame] | 547 | void (*enable_leds)(struct mv_host_priv *hpriv, void __iomem *mmio); |
| 548 | void (*read_preamp)(struct mv_host_priv *hpriv, int idx, |
| 549 | void __iomem *mmio); |
Jeff Garzik | c9d3913 | 2005-11-13 17:47:51 -0500 | [diff] [blame] | 550 | int (*reset_hc)(struct mv_host_priv *hpriv, void __iomem *mmio, |
| 551 | unsigned int n_hc); |
Jeff Garzik | 522479f | 2005-11-12 22:14:02 -0500 | [diff] [blame] | 552 | void (*reset_flash)(struct mv_host_priv *hpriv, void __iomem *mmio); |
Saeed Bishara | 7bb3c52 | 2008-01-30 11:50:45 -1100 | [diff] [blame] | 553 | void (*reset_bus)(struct ata_host *host, void __iomem *mmio); |
Jeff Garzik | 47c2b67 | 2005-11-12 21:13:17 -0500 | [diff] [blame] | 554 | }; |
| 555 | |
Tejun Heo | 82ef04f | 2008-07-31 17:02:40 +0900 | [diff] [blame] | 556 | static int mv_scr_read(struct ata_link *link, unsigned int sc_reg_in, u32 *val); |
| 557 | static int mv_scr_write(struct ata_link *link, unsigned int sc_reg_in, u32 val); |
| 558 | static int mv5_scr_read(struct ata_link *link, unsigned int sc_reg_in, u32 *val); |
| 559 | static int mv5_scr_write(struct ata_link *link, unsigned int sc_reg_in, u32 val); |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 560 | static int mv_port_start(struct ata_port *ap); |
| 561 | static void mv_port_stop(struct ata_port *ap); |
Mark Lord | 3e4a139 | 2008-05-02 02:10:02 -0400 | [diff] [blame] | 562 | static int mv_qc_defer(struct ata_queued_cmd *qc); |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 563 | static void mv_qc_prep(struct ata_queued_cmd *qc); |
Jeff Garzik | e4e7b89 | 2006-01-31 12:18:41 -0500 | [diff] [blame] | 564 | static void mv_qc_prep_iie(struct ata_queued_cmd *qc); |
Tejun Heo | 9a3d9eb | 2006-01-23 13:09:36 +0900 | [diff] [blame] | 565 | static unsigned int mv_qc_issue(struct ata_queued_cmd *qc); |
Tejun Heo | a1efdab | 2008-03-25 12:22:50 +0900 | [diff] [blame] | 566 | static int mv_hardreset(struct ata_link *link, unsigned int *class, |
| 567 | unsigned long deadline); |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 568 | static void mv_eh_freeze(struct ata_port *ap); |
| 569 | static void mv_eh_thaw(struct ata_port *ap); |
Mark Lord | f273827 | 2008-01-26 18:32:29 -0500 | [diff] [blame] | 570 | static void mv6_dev_config(struct ata_device *dev); |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 571 | |
Jeff Garzik | 2a47ce0 | 2005-11-12 23:05:14 -0500 | [diff] [blame] | 572 | static void mv5_phy_errata(struct mv_host_priv *hpriv, void __iomem *mmio, |
| 573 | unsigned int port); |
Jeff Garzik | 47c2b67 | 2005-11-12 21:13:17 -0500 | [diff] [blame] | 574 | static void mv5_enable_leds(struct mv_host_priv *hpriv, void __iomem *mmio); |
| 575 | static void mv5_read_preamp(struct mv_host_priv *hpriv, int idx, |
| 576 | void __iomem *mmio); |
Jeff Garzik | c9d3913 | 2005-11-13 17:47:51 -0500 | [diff] [blame] | 577 | static int mv5_reset_hc(struct mv_host_priv *hpriv, void __iomem *mmio, |
| 578 | unsigned int n_hc); |
Jeff Garzik | 522479f | 2005-11-12 22:14:02 -0500 | [diff] [blame] | 579 | static void mv5_reset_flash(struct mv_host_priv *hpriv, void __iomem *mmio); |
Saeed Bishara | 7bb3c52 | 2008-01-30 11:50:45 -1100 | [diff] [blame] | 580 | static void mv5_reset_bus(struct ata_host *host, void __iomem *mmio); |
Jeff Garzik | 47c2b67 | 2005-11-12 21:13:17 -0500 | [diff] [blame] | 581 | |
Jeff Garzik | 2a47ce0 | 2005-11-12 23:05:14 -0500 | [diff] [blame] | 582 | static void mv6_phy_errata(struct mv_host_priv *hpriv, void __iomem *mmio, |
| 583 | unsigned int port); |
Jeff Garzik | 47c2b67 | 2005-11-12 21:13:17 -0500 | [diff] [blame] | 584 | static void mv6_enable_leds(struct mv_host_priv *hpriv, void __iomem *mmio); |
| 585 | static void mv6_read_preamp(struct mv_host_priv *hpriv, int idx, |
| 586 | void __iomem *mmio); |
Jeff Garzik | c9d3913 | 2005-11-13 17:47:51 -0500 | [diff] [blame] | 587 | static int mv6_reset_hc(struct mv_host_priv *hpriv, void __iomem *mmio, |
| 588 | unsigned int n_hc); |
Jeff Garzik | 522479f | 2005-11-12 22:14:02 -0500 | [diff] [blame] | 589 | static void mv6_reset_flash(struct mv_host_priv *hpriv, void __iomem *mmio); |
Saeed Bishara | f351b2d | 2008-02-01 18:08:03 -0500 | [diff] [blame] | 590 | static void mv_soc_enable_leds(struct mv_host_priv *hpriv, |
| 591 | void __iomem *mmio); |
| 592 | static void mv_soc_read_preamp(struct mv_host_priv *hpriv, int idx, |
| 593 | void __iomem *mmio); |
| 594 | static int mv_soc_reset_hc(struct mv_host_priv *hpriv, |
| 595 | void __iomem *mmio, unsigned int n_hc); |
| 596 | static void mv_soc_reset_flash(struct mv_host_priv *hpriv, |
| 597 | void __iomem *mmio); |
| 598 | static void mv_soc_reset_bus(struct ata_host *host, void __iomem *mmio); |
Saeed Bishara | 7bb3c52 | 2008-01-30 11:50:45 -1100 | [diff] [blame] | 599 | static void mv_reset_pci_bus(struct ata_host *host, void __iomem *mmio); |
Mark Lord | e12bef5 | 2008-03-31 19:33:56 -0400 | [diff] [blame] | 600 | static void mv_reset_channel(struct mv_host_priv *hpriv, void __iomem *mmio, |
Jeff Garzik | c9d3913 | 2005-11-13 17:47:51 -0500 | [diff] [blame] | 601 | unsigned int port_no); |
Mark Lord | e12bef5 | 2008-03-31 19:33:56 -0400 | [diff] [blame] | 602 | static int mv_stop_edma(struct ata_port *ap); |
Mark Lord | b562468 | 2008-03-31 19:34:40 -0400 | [diff] [blame] | 603 | static int mv_stop_edma_engine(void __iomem *port_mmio); |
Mark Lord | 00b8123 | 2009-01-30 18:47:51 -0500 | [diff] [blame] | 604 | static void mv_edma_cfg(struct ata_port *ap, int want_ncq, int want_edma); |
Jeff Garzik | 47c2b67 | 2005-11-12 21:13:17 -0500 | [diff] [blame] | 605 | |
Mark Lord | e49856d | 2008-04-16 14:59:07 -0400 | [diff] [blame] | 606 | static void mv_pmp_select(struct ata_port *ap, int pmp); |
| 607 | static int mv_pmp_hardreset(struct ata_link *link, unsigned int *class, |
| 608 | unsigned long deadline); |
| 609 | static int mv_softreset(struct ata_link *link, unsigned int *class, |
| 610 | unsigned long deadline); |
Mark Lord | 29d187b | 2008-05-02 02:15:37 -0400 | [diff] [blame] | 611 | static void mv_pmp_error_handler(struct ata_port *ap); |
Mark Lord | 4c299ca | 2008-05-02 02:16:20 -0400 | [diff] [blame] | 612 | static void mv_process_crpb_entries(struct ata_port *ap, |
| 613 | struct mv_port_priv *pp); |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 614 | |
Mark Lord | da14265 | 2009-01-30 18:51:54 -0500 | [diff] [blame] | 615 | static void mv_sff_irq_clear(struct ata_port *ap); |
| 616 | static int mv_check_atapi_dma(struct ata_queued_cmd *qc); |
| 617 | static void mv_bmdma_setup(struct ata_queued_cmd *qc); |
| 618 | static void mv_bmdma_start(struct ata_queued_cmd *qc); |
| 619 | static void mv_bmdma_stop(struct ata_queued_cmd *qc); |
| 620 | static u8 mv_bmdma_status(struct ata_port *ap); |
Mark Lord | d16ab3f | 2009-02-25 15:17:43 -0500 | [diff] [blame] | 621 | static u8 mv_sff_check_status(struct ata_port *ap); |
Mark Lord | da14265 | 2009-01-30 18:51:54 -0500 | [diff] [blame] | 622 | |
Mark Lord | eb73d55 | 2008-01-29 13:24:00 -0500 | [diff] [blame] | 623 | /* .sg_tablesize is (MV_MAX_SG_CT / 2) in the structures below |
| 624 | * because we have to allow room for worst case splitting of |
| 625 | * PRDs for 64K boundaries in mv_fill_sg(). |
| 626 | */ |
Jeff Garzik | c5d3e45 | 2007-07-11 18:30:50 -0400 | [diff] [blame] | 627 | static struct scsi_host_template mv5_sht = { |
Tejun Heo | 68d1d07 | 2008-03-25 12:22:49 +0900 | [diff] [blame] | 628 | ATA_BASE_SHT(DRV_NAME), |
Jeff Garzik | baf14aa | 2007-10-09 13:51:57 -0400 | [diff] [blame] | 629 | .sg_tablesize = MV_MAX_SG_CT / 2, |
Jeff Garzik | c5d3e45 | 2007-07-11 18:30:50 -0400 | [diff] [blame] | 630 | .dma_boundary = MV_DMA_BOUNDARY, |
Jeff Garzik | c5d3e45 | 2007-07-11 18:30:50 -0400 | [diff] [blame] | 631 | }; |
| 632 | |
| 633 | static struct scsi_host_template mv6_sht = { |
Tejun Heo | 68d1d07 | 2008-03-25 12:22:49 +0900 | [diff] [blame] | 634 | ATA_NCQ_SHT(DRV_NAME), |
Mark Lord | 138bfdd | 2008-01-26 18:33:18 -0500 | [diff] [blame] | 635 | .can_queue = MV_MAX_Q_DEPTH - 1, |
Jeff Garzik | baf14aa | 2007-10-09 13:51:57 -0400 | [diff] [blame] | 636 | .sg_tablesize = MV_MAX_SG_CT / 2, |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 637 | .dma_boundary = MV_DMA_BOUNDARY, |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 638 | }; |
| 639 | |
Tejun Heo | 029cfd6 | 2008-03-25 12:22:49 +0900 | [diff] [blame] | 640 | static struct ata_port_operations mv5_ops = { |
| 641 | .inherits = &ata_sff_port_ops, |
Jeff Garzik | c9d3913 | 2005-11-13 17:47:51 -0500 | [diff] [blame] | 642 | |
Mark Lord | 3e4a139 | 2008-05-02 02:10:02 -0400 | [diff] [blame] | 643 | .qc_defer = mv_qc_defer, |
Jeff Garzik | c9d3913 | 2005-11-13 17:47:51 -0500 | [diff] [blame] | 644 | .qc_prep = mv_qc_prep, |
| 645 | .qc_issue = mv_qc_issue, |
| 646 | |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 647 | .freeze = mv_eh_freeze, |
| 648 | .thaw = mv_eh_thaw, |
Tejun Heo | a1efdab | 2008-03-25 12:22:50 +0900 | [diff] [blame] | 649 | .hardreset = mv_hardreset, |
Tejun Heo | a1efdab | 2008-03-25 12:22:50 +0900 | [diff] [blame] | 650 | .error_handler = ata_std_error_handler, /* avoid SFF EH */ |
Tejun Heo | 029cfd6 | 2008-03-25 12:22:49 +0900 | [diff] [blame] | 651 | .post_internal_cmd = ATA_OP_NULL, |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 652 | |
Jeff Garzik | c9d3913 | 2005-11-13 17:47:51 -0500 | [diff] [blame] | 653 | .scr_read = mv5_scr_read, |
| 654 | .scr_write = mv5_scr_write, |
| 655 | |
| 656 | .port_start = mv_port_start, |
| 657 | .port_stop = mv_port_stop, |
Jeff Garzik | c9d3913 | 2005-11-13 17:47:51 -0500 | [diff] [blame] | 658 | }; |
| 659 | |
Tejun Heo | 029cfd6 | 2008-03-25 12:22:49 +0900 | [diff] [blame] | 660 | static struct ata_port_operations mv6_ops = { |
| 661 | .inherits = &mv5_ops, |
Mark Lord | f273827 | 2008-01-26 18:32:29 -0500 | [diff] [blame] | 662 | .dev_config = mv6_dev_config, |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 663 | .scr_read = mv_scr_read, |
| 664 | .scr_write = mv_scr_write, |
| 665 | |
Mark Lord | e49856d | 2008-04-16 14:59:07 -0400 | [diff] [blame] | 666 | .pmp_hardreset = mv_pmp_hardreset, |
| 667 | .pmp_softreset = mv_softreset, |
| 668 | .softreset = mv_softreset, |
Mark Lord | 29d187b | 2008-05-02 02:15:37 -0400 | [diff] [blame] | 669 | .error_handler = mv_pmp_error_handler, |
Mark Lord | da14265 | 2009-01-30 18:51:54 -0500 | [diff] [blame] | 670 | |
Mark Lord | 40f21b1 | 2009-03-10 18:51:04 -0400 | [diff] [blame] | 671 | .sff_check_status = mv_sff_check_status, |
Mark Lord | da14265 | 2009-01-30 18:51:54 -0500 | [diff] [blame] | 672 | .sff_irq_clear = mv_sff_irq_clear, |
| 673 | .check_atapi_dma = mv_check_atapi_dma, |
| 674 | .bmdma_setup = mv_bmdma_setup, |
| 675 | .bmdma_start = mv_bmdma_start, |
| 676 | .bmdma_stop = mv_bmdma_stop, |
| 677 | .bmdma_status = mv_bmdma_status, |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 678 | }; |
| 679 | |
Tejun Heo | 029cfd6 | 2008-03-25 12:22:49 +0900 | [diff] [blame] | 680 | static struct ata_port_operations mv_iie_ops = { |
| 681 | .inherits = &mv6_ops, |
| 682 | .dev_config = ATA_OP_NULL, |
Jeff Garzik | e4e7b89 | 2006-01-31 12:18:41 -0500 | [diff] [blame] | 683 | .qc_prep = mv_qc_prep_iie, |
Jeff Garzik | e4e7b89 | 2006-01-31 12:18:41 -0500 | [diff] [blame] | 684 | }; |
| 685 | |
Arjan van de Ven | 98ac62d | 2005-11-28 10:06:23 +0100 | [diff] [blame] | 686 | static const struct ata_port_info mv_port_info[] = { |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 687 | { /* chip_504x */ |
Mark Lord | 91b1a84 | 2009-01-30 18:46:39 -0500 | [diff] [blame] | 688 | .flags = MV_GEN_I_FLAGS, |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 689 | .pio_mask = 0x1f, /* pio0-4 */ |
Jeff Garzik | bf6263a | 2007-07-09 12:16:50 -0400 | [diff] [blame] | 690 | .udma_mask = ATA_UDMA6, |
Jeff Garzik | c9d3913 | 2005-11-13 17:47:51 -0500 | [diff] [blame] | 691 | .port_ops = &mv5_ops, |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 692 | }, |
| 693 | { /* chip_508x */ |
Mark Lord | 91b1a84 | 2009-01-30 18:46:39 -0500 | [diff] [blame] | 694 | .flags = MV_GEN_I_FLAGS | MV_FLAG_DUAL_HC, |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 695 | .pio_mask = 0x1f, /* pio0-4 */ |
Jeff Garzik | bf6263a | 2007-07-09 12:16:50 -0400 | [diff] [blame] | 696 | .udma_mask = ATA_UDMA6, |
Jeff Garzik | c9d3913 | 2005-11-13 17:47:51 -0500 | [diff] [blame] | 697 | .port_ops = &mv5_ops, |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 698 | }, |
Jeff Garzik | 47c2b67 | 2005-11-12 21:13:17 -0500 | [diff] [blame] | 699 | { /* chip_5080 */ |
Mark Lord | 91b1a84 | 2009-01-30 18:46:39 -0500 | [diff] [blame] | 700 | .flags = MV_GEN_I_FLAGS | MV_FLAG_DUAL_HC, |
Jeff Garzik | 47c2b67 | 2005-11-12 21:13:17 -0500 | [diff] [blame] | 701 | .pio_mask = 0x1f, /* pio0-4 */ |
Jeff Garzik | bf6263a | 2007-07-09 12:16:50 -0400 | [diff] [blame] | 702 | .udma_mask = ATA_UDMA6, |
Jeff Garzik | c9d3913 | 2005-11-13 17:47:51 -0500 | [diff] [blame] | 703 | .port_ops = &mv5_ops, |
Jeff Garzik | 47c2b67 | 2005-11-12 21:13:17 -0500 | [diff] [blame] | 704 | }, |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 705 | { /* chip_604x */ |
Mark Lord | 91b1a84 | 2009-01-30 18:46:39 -0500 | [diff] [blame] | 706 | .flags = MV_GEN_II_FLAGS, |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 707 | .pio_mask = 0x1f, /* pio0-4 */ |
Jeff Garzik | bf6263a | 2007-07-09 12:16:50 -0400 | [diff] [blame] | 708 | .udma_mask = ATA_UDMA6, |
Jeff Garzik | c9d3913 | 2005-11-13 17:47:51 -0500 | [diff] [blame] | 709 | .port_ops = &mv6_ops, |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 710 | }, |
| 711 | { /* chip_608x */ |
Mark Lord | 91b1a84 | 2009-01-30 18:46:39 -0500 | [diff] [blame] | 712 | .flags = MV_GEN_II_FLAGS | MV_FLAG_DUAL_HC, |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 713 | .pio_mask = 0x1f, /* pio0-4 */ |
Jeff Garzik | bf6263a | 2007-07-09 12:16:50 -0400 | [diff] [blame] | 714 | .udma_mask = ATA_UDMA6, |
Jeff Garzik | c9d3913 | 2005-11-13 17:47:51 -0500 | [diff] [blame] | 715 | .port_ops = &mv6_ops, |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 716 | }, |
Jeff Garzik | e4e7b89 | 2006-01-31 12:18:41 -0500 | [diff] [blame] | 717 | { /* chip_6042 */ |
Mark Lord | 91b1a84 | 2009-01-30 18:46:39 -0500 | [diff] [blame] | 718 | .flags = MV_GEN_IIE_FLAGS, |
Jeff Garzik | e4e7b89 | 2006-01-31 12:18:41 -0500 | [diff] [blame] | 719 | .pio_mask = 0x1f, /* pio0-4 */ |
Jeff Garzik | bf6263a | 2007-07-09 12:16:50 -0400 | [diff] [blame] | 720 | .udma_mask = ATA_UDMA6, |
Jeff Garzik | e4e7b89 | 2006-01-31 12:18:41 -0500 | [diff] [blame] | 721 | .port_ops = &mv_iie_ops, |
| 722 | }, |
| 723 | { /* chip_7042 */ |
Mark Lord | 91b1a84 | 2009-01-30 18:46:39 -0500 | [diff] [blame] | 724 | .flags = MV_GEN_IIE_FLAGS, |
Jeff Garzik | e4e7b89 | 2006-01-31 12:18:41 -0500 | [diff] [blame] | 725 | .pio_mask = 0x1f, /* pio0-4 */ |
Jeff Garzik | bf6263a | 2007-07-09 12:16:50 -0400 | [diff] [blame] | 726 | .udma_mask = ATA_UDMA6, |
Jeff Garzik | e4e7b89 | 2006-01-31 12:18:41 -0500 | [diff] [blame] | 727 | .port_ops = &mv_iie_ops, |
| 728 | }, |
Saeed Bishara | f351b2d | 2008-02-01 18:08:03 -0500 | [diff] [blame] | 729 | { /* chip_soc */ |
Mark Lord | 91b1a84 | 2009-01-30 18:46:39 -0500 | [diff] [blame] | 730 | .flags = MV_GEN_IIE_FLAGS, |
Mark Lord | 17c5aab | 2008-04-16 14:56:51 -0400 | [diff] [blame] | 731 | .pio_mask = 0x1f, /* pio0-4 */ |
| 732 | .udma_mask = ATA_UDMA6, |
| 733 | .port_ops = &mv_iie_ops, |
Saeed Bishara | f351b2d | 2008-02-01 18:08:03 -0500 | [diff] [blame] | 734 | }, |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 735 | }; |
| 736 | |
Jeff Garzik | 3b7d697 | 2005-11-10 11:04:11 -0500 | [diff] [blame] | 737 | static const struct pci_device_id mv_pci_tbl[] = { |
Jeff Garzik | 2d2744f | 2006-09-28 20:21:59 -0400 | [diff] [blame] | 738 | { PCI_VDEVICE(MARVELL, 0x5040), chip_504x }, |
| 739 | { PCI_VDEVICE(MARVELL, 0x5041), chip_504x }, |
| 740 | { PCI_VDEVICE(MARVELL, 0x5080), chip_5080 }, |
| 741 | { PCI_VDEVICE(MARVELL, 0x5081), chip_508x }, |
Mark Lord | 46c5784 | 2008-09-04 18:21:07 -0400 | [diff] [blame] | 742 | /* RocketRAID 1720/174x have different identifiers */ |
| 743 | { PCI_VDEVICE(TTI, 0x1720), chip_6042 }, |
Mark Lord | 4462254 | 2009-01-27 16:33:13 -0500 | [diff] [blame] | 744 | { PCI_VDEVICE(TTI, 0x1740), chip_6042 }, |
| 745 | { PCI_VDEVICE(TTI, 0x1742), chip_6042 }, |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 746 | |
Jeff Garzik | 2d2744f | 2006-09-28 20:21:59 -0400 | [diff] [blame] | 747 | { PCI_VDEVICE(MARVELL, 0x6040), chip_604x }, |
| 748 | { PCI_VDEVICE(MARVELL, 0x6041), chip_604x }, |
| 749 | { PCI_VDEVICE(MARVELL, 0x6042), chip_6042 }, |
| 750 | { PCI_VDEVICE(MARVELL, 0x6080), chip_608x }, |
| 751 | { PCI_VDEVICE(MARVELL, 0x6081), chip_608x }, |
Jeff Garzik | 2917953 | 2005-11-11 08:08:03 -0500 | [diff] [blame] | 752 | |
Jeff Garzik | 2d2744f | 2006-09-28 20:21:59 -0400 | [diff] [blame] | 753 | { PCI_VDEVICE(ADAPTEC2, 0x0241), chip_604x }, |
| 754 | |
Florian Attenberger | d9f9c6b | 2007-07-02 17:09:29 +0200 | [diff] [blame] | 755 | /* Adaptec 1430SA */ |
| 756 | { PCI_VDEVICE(ADAPTEC2, 0x0243), chip_7042 }, |
| 757 | |
Mark Lord | 02a121d | 2007-12-01 13:07:22 -0500 | [diff] [blame] | 758 | /* Marvell 7042 support */ |
Morrison, Tom | 6a3d586 | 2007-03-06 02:38:10 -0800 | [diff] [blame] | 759 | { PCI_VDEVICE(MARVELL, 0x7042), chip_7042 }, |
| 760 | |
Mark Lord | 02a121d | 2007-12-01 13:07:22 -0500 | [diff] [blame] | 761 | /* Highpoint RocketRAID PCIe series */ |
| 762 | { PCI_VDEVICE(TTI, 0x2300), chip_7042 }, |
| 763 | { PCI_VDEVICE(TTI, 0x2310), chip_7042 }, |
| 764 | |
Jeff Garzik | 2d2744f | 2006-09-28 20:21:59 -0400 | [diff] [blame] | 765 | { } /* terminate list */ |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 766 | }; |
| 767 | |
Jeff Garzik | 47c2b67 | 2005-11-12 21:13:17 -0500 | [diff] [blame] | 768 | static const struct mv_hw_ops mv5xxx_ops = { |
| 769 | .phy_errata = mv5_phy_errata, |
| 770 | .enable_leds = mv5_enable_leds, |
| 771 | .read_preamp = mv5_read_preamp, |
| 772 | .reset_hc = mv5_reset_hc, |
Jeff Garzik | 522479f | 2005-11-12 22:14:02 -0500 | [diff] [blame] | 773 | .reset_flash = mv5_reset_flash, |
| 774 | .reset_bus = mv5_reset_bus, |
Jeff Garzik | 47c2b67 | 2005-11-12 21:13:17 -0500 | [diff] [blame] | 775 | }; |
| 776 | |
| 777 | static const struct mv_hw_ops mv6xxx_ops = { |
| 778 | .phy_errata = mv6_phy_errata, |
| 779 | .enable_leds = mv6_enable_leds, |
| 780 | .read_preamp = mv6_read_preamp, |
| 781 | .reset_hc = mv6_reset_hc, |
Jeff Garzik | 522479f | 2005-11-12 22:14:02 -0500 | [diff] [blame] | 782 | .reset_flash = mv6_reset_flash, |
| 783 | .reset_bus = mv_reset_pci_bus, |
Jeff Garzik | 47c2b67 | 2005-11-12 21:13:17 -0500 | [diff] [blame] | 784 | }; |
| 785 | |
Saeed Bishara | f351b2d | 2008-02-01 18:08:03 -0500 | [diff] [blame] | 786 | static const struct mv_hw_ops mv_soc_ops = { |
| 787 | .phy_errata = mv6_phy_errata, |
| 788 | .enable_leds = mv_soc_enable_leds, |
| 789 | .read_preamp = mv_soc_read_preamp, |
| 790 | .reset_hc = mv_soc_reset_hc, |
| 791 | .reset_flash = mv_soc_reset_flash, |
| 792 | .reset_bus = mv_soc_reset_bus, |
| 793 | }; |
| 794 | |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 795 | /* |
| 796 | * Functions |
| 797 | */ |
| 798 | |
| 799 | static inline void writelfl(unsigned long data, void __iomem *addr) |
| 800 | { |
| 801 | writel(data, addr); |
| 802 | (void) readl(addr); /* flush to avoid PCI posted write */ |
| 803 | } |
| 804 | |
Jeff Garzik | c9d3913 | 2005-11-13 17:47:51 -0500 | [diff] [blame] | 805 | static inline unsigned int mv_hc_from_port(unsigned int port) |
| 806 | { |
| 807 | return port >> MV_PORT_HC_SHIFT; |
| 808 | } |
| 809 | |
| 810 | static inline unsigned int mv_hardport_from_port(unsigned int port) |
| 811 | { |
| 812 | return port & MV_PORT_MASK; |
| 813 | } |
| 814 | |
Mark Lord | 1cfd19a | 2008-04-19 15:05:50 -0400 | [diff] [blame] | 815 | /* |
| 816 | * Consolidate some rather tricky bit shift calculations. |
| 817 | * This is hot-path stuff, so not a function. |
| 818 | * Simple code, with two return values, so macro rather than inline. |
| 819 | * |
| 820 | * port is the sole input, in range 0..7. |
Mark Lord | 7368f91 | 2008-04-25 11:24:24 -0400 | [diff] [blame] | 821 | * shift is one output, for use with main_irq_cause / main_irq_mask registers. |
| 822 | * hardport is the other output, in range 0..3. |
Mark Lord | 1cfd19a | 2008-04-19 15:05:50 -0400 | [diff] [blame] | 823 | * |
| 824 | * Note that port and hardport may be the same variable in some cases. |
| 825 | */ |
| 826 | #define MV_PORT_TO_SHIFT_AND_HARDPORT(port, shift, hardport) \ |
| 827 | { \ |
| 828 | shift = mv_hc_from_port(port) * HC_SHIFT; \ |
| 829 | hardport = mv_hardport_from_port(port); \ |
| 830 | shift += hardport * 2; \ |
| 831 | } |
| 832 | |
Mark Lord | 352fab7 | 2008-04-19 14:43:42 -0400 | [diff] [blame] | 833 | static inline void __iomem *mv_hc_base(void __iomem *base, unsigned int hc) |
| 834 | { |
| 835 | return (base + MV_SATAHC0_REG_BASE + (hc * MV_SATAHC_REG_SZ)); |
| 836 | } |
| 837 | |
Jeff Garzik | c9d3913 | 2005-11-13 17:47:51 -0500 | [diff] [blame] | 838 | static inline void __iomem *mv_hc_base_from_port(void __iomem *base, |
| 839 | unsigned int port) |
| 840 | { |
| 841 | return mv_hc_base(base, mv_hc_from_port(port)); |
| 842 | } |
| 843 | |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 844 | static inline void __iomem *mv_port_base(void __iomem *base, unsigned int port) |
| 845 | { |
Jeff Garzik | c9d3913 | 2005-11-13 17:47:51 -0500 | [diff] [blame] | 846 | return mv_hc_base_from_port(base, port) + |
Jeff Garzik | 8b26024 | 2005-11-12 12:32:50 -0500 | [diff] [blame] | 847 | MV_SATAHC_ARBTR_REG_SZ + |
Jeff Garzik | c9d3913 | 2005-11-13 17:47:51 -0500 | [diff] [blame] | 848 | (mv_hardport_from_port(port) * MV_PORT_REG_SZ); |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 849 | } |
| 850 | |
Mark Lord | e12bef5 | 2008-03-31 19:33:56 -0400 | [diff] [blame] | 851 | static void __iomem *mv5_phy_base(void __iomem *mmio, unsigned int port) |
| 852 | { |
| 853 | void __iomem *hc_mmio = mv_hc_base_from_port(mmio, port); |
| 854 | unsigned long ofs = (mv_hardport_from_port(port) + 1) * 0x100UL; |
| 855 | |
| 856 | return hc_mmio + ofs; |
| 857 | } |
| 858 | |
Saeed Bishara | f351b2d | 2008-02-01 18:08:03 -0500 | [diff] [blame] | 859 | static inline void __iomem *mv_host_base(struct ata_host *host) |
| 860 | { |
| 861 | struct mv_host_priv *hpriv = host->private_data; |
| 862 | return hpriv->base; |
| 863 | } |
| 864 | |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 865 | static inline void __iomem *mv_ap_base(struct ata_port *ap) |
| 866 | { |
Saeed Bishara | f351b2d | 2008-02-01 18:08:03 -0500 | [diff] [blame] | 867 | return mv_port_base(mv_host_base(ap->host), ap->port_no); |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 868 | } |
| 869 | |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 870 | static inline int mv_get_hc_count(unsigned long port_flags) |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 871 | { |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 872 | return ((port_flags & MV_FLAG_DUAL_HC) ? 2 : 1); |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 873 | } |
| 874 | |
Mark Lord | 08da175 | 2009-02-25 15:13:03 -0500 | [diff] [blame] | 875 | /** |
| 876 | * mv_save_cached_regs - (re-)initialize cached port registers |
| 877 | * @ap: the port whose registers we are caching |
| 878 | * |
| 879 | * Initialize the local cache of port registers, |
| 880 | * so that reading them over and over again can |
| 881 | * be avoided on the hotter paths of this driver. |
| 882 | * This saves a few microseconds each time we switch |
| 883 | * to/from EDMA mode to perform (eg.) a drive cache flush. |
| 884 | */ |
| 885 | static void mv_save_cached_regs(struct ata_port *ap) |
| 886 | { |
| 887 | void __iomem *port_mmio = mv_ap_base(ap); |
| 888 | struct mv_port_priv *pp = ap->private_data; |
| 889 | |
| 890 | pp->cached.fiscfg = readl(port_mmio + FISCFG_OFS); |
| 891 | pp->cached.ltmode = readl(port_mmio + LTMODE_OFS); |
| 892 | pp->cached.haltcond = readl(port_mmio + EDMA_HALTCOND_OFS); |
Mark Lord | c01e8a2 | 2009-02-25 15:14:48 -0500 | [diff] [blame] | 893 | pp->cached.unknown_rsvd = readl(port_mmio + EDMA_UNKNOWN_RSVD_OFS); |
Mark Lord | 08da175 | 2009-02-25 15:13:03 -0500 | [diff] [blame] | 894 | } |
| 895 | |
| 896 | /** |
| 897 | * mv_write_cached_reg - write to a cached port register |
| 898 | * @addr: hardware address of the register |
| 899 | * @old: pointer to cached value of the register |
| 900 | * @new: new value for the register |
| 901 | * |
| 902 | * Write a new value to a cached register, |
| 903 | * but only if the value is different from before. |
| 904 | */ |
| 905 | static inline void mv_write_cached_reg(void __iomem *addr, u32 *old, u32 new) |
| 906 | { |
| 907 | if (new != *old) { |
| 908 | *old = new; |
| 909 | writel(new, addr); |
| 910 | } |
| 911 | } |
| 912 | |
Jeff Garzik | c5d3e45 | 2007-07-11 18:30:50 -0400 | [diff] [blame] | 913 | static void mv_set_edma_ptrs(void __iomem *port_mmio, |
| 914 | struct mv_host_priv *hpriv, |
| 915 | struct mv_port_priv *pp) |
| 916 | { |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 917 | u32 index; |
| 918 | |
Jeff Garzik | c5d3e45 | 2007-07-11 18:30:50 -0400 | [diff] [blame] | 919 | /* |
| 920 | * initialize request queue |
| 921 | */ |
Mark Lord | fcfb1f7 | 2008-04-19 15:06:40 -0400 | [diff] [blame] | 922 | pp->req_idx &= MV_MAX_Q_DEPTH_MASK; /* paranoia */ |
| 923 | index = pp->req_idx << EDMA_REQ_Q_PTR_SHIFT; |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 924 | |
Jeff Garzik | c5d3e45 | 2007-07-11 18:30:50 -0400 | [diff] [blame] | 925 | WARN_ON(pp->crqb_dma & 0x3ff); |
| 926 | writel((pp->crqb_dma >> 16) >> 16, port_mmio + EDMA_REQ_Q_BASE_HI_OFS); |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 927 | writelfl((pp->crqb_dma & EDMA_REQ_Q_BASE_LO_MASK) | index, |
Jeff Garzik | c5d3e45 | 2007-07-11 18:30:50 -0400 | [diff] [blame] | 928 | port_mmio + EDMA_REQ_Q_IN_PTR_OFS); |
Mark Lord | 5cf73bf | 2008-05-27 17:58:56 -0400 | [diff] [blame] | 929 | writelfl(index, port_mmio + EDMA_REQ_Q_OUT_PTR_OFS); |
Jeff Garzik | c5d3e45 | 2007-07-11 18:30:50 -0400 | [diff] [blame] | 930 | |
| 931 | /* |
| 932 | * initialize response queue |
| 933 | */ |
Mark Lord | fcfb1f7 | 2008-04-19 15:06:40 -0400 | [diff] [blame] | 934 | pp->resp_idx &= MV_MAX_Q_DEPTH_MASK; /* paranoia */ |
| 935 | index = pp->resp_idx << EDMA_RSP_Q_PTR_SHIFT; |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 936 | |
Jeff Garzik | c5d3e45 | 2007-07-11 18:30:50 -0400 | [diff] [blame] | 937 | WARN_ON(pp->crpb_dma & 0xff); |
| 938 | writel((pp->crpb_dma >> 16) >> 16, port_mmio + EDMA_RSP_Q_BASE_HI_OFS); |
Mark Lord | 5cf73bf | 2008-05-27 17:58:56 -0400 | [diff] [blame] | 939 | writelfl(index, port_mmio + EDMA_RSP_Q_IN_PTR_OFS); |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 940 | writelfl((pp->crpb_dma & EDMA_RSP_Q_BASE_LO_MASK) | index, |
Jeff Garzik | c5d3e45 | 2007-07-11 18:30:50 -0400 | [diff] [blame] | 941 | port_mmio + EDMA_RSP_Q_OUT_PTR_OFS); |
Jeff Garzik | c5d3e45 | 2007-07-11 18:30:50 -0400 | [diff] [blame] | 942 | } |
| 943 | |
Mark Lord | 2b748a0 | 2009-03-10 22:01:17 -0400 | [diff] [blame^] | 944 | static void mv_write_main_irq_mask(u32 mask, struct mv_host_priv *hpriv) |
| 945 | { |
| 946 | /* |
| 947 | * When writing to the main_irq_mask in hardware, |
| 948 | * we must ensure exclusivity between the interrupt coalescing bits |
| 949 | * and the corresponding individual port DONE_IRQ bits. |
| 950 | * |
| 951 | * Note that this register is really an "IRQ enable" register, |
| 952 | * not an "IRQ mask" register as Marvell's naming might suggest. |
| 953 | */ |
| 954 | if (mask & (ALL_PORTS_COAL_DONE | PORTS_0_3_COAL_DONE)) |
| 955 | mask &= ~DONE_IRQ_0_3; |
| 956 | if (mask & (ALL_PORTS_COAL_DONE | PORTS_4_7_COAL_DONE)) |
| 957 | mask &= ~DONE_IRQ_4_7; |
| 958 | writelfl(mask, hpriv->main_irq_mask_addr); |
| 959 | } |
| 960 | |
Mark Lord | c4de573 | 2008-05-17 13:35:21 -0400 | [diff] [blame] | 961 | static void mv_set_main_irq_mask(struct ata_host *host, |
| 962 | u32 disable_bits, u32 enable_bits) |
| 963 | { |
| 964 | struct mv_host_priv *hpriv = host->private_data; |
| 965 | u32 old_mask, new_mask; |
| 966 | |
Mark Lord | 96e2c487 | 2008-05-17 13:38:00 -0400 | [diff] [blame] | 967 | old_mask = hpriv->main_irq_mask; |
Mark Lord | c4de573 | 2008-05-17 13:35:21 -0400 | [diff] [blame] | 968 | new_mask = (old_mask & ~disable_bits) | enable_bits; |
Mark Lord | 96e2c487 | 2008-05-17 13:38:00 -0400 | [diff] [blame] | 969 | if (new_mask != old_mask) { |
| 970 | hpriv->main_irq_mask = new_mask; |
Mark Lord | 2b748a0 | 2009-03-10 22:01:17 -0400 | [diff] [blame^] | 971 | mv_write_main_irq_mask(new_mask, hpriv); |
Mark Lord | 96e2c487 | 2008-05-17 13:38:00 -0400 | [diff] [blame] | 972 | } |
Mark Lord | c4de573 | 2008-05-17 13:35:21 -0400 | [diff] [blame] | 973 | } |
| 974 | |
| 975 | static void mv_enable_port_irqs(struct ata_port *ap, |
| 976 | unsigned int port_bits) |
| 977 | { |
| 978 | unsigned int shift, hardport, port = ap->port_no; |
| 979 | u32 disable_bits, enable_bits; |
| 980 | |
| 981 | MV_PORT_TO_SHIFT_AND_HARDPORT(port, shift, hardport); |
| 982 | |
| 983 | disable_bits = (DONE_IRQ | ERR_IRQ) << shift; |
| 984 | enable_bits = port_bits << shift; |
| 985 | mv_set_main_irq_mask(ap->host, disable_bits, enable_bits); |
| 986 | } |
| 987 | |
Mark Lord | 00b8123 | 2009-01-30 18:47:51 -0500 | [diff] [blame] | 988 | static void mv_clear_and_enable_port_irqs(struct ata_port *ap, |
| 989 | void __iomem *port_mmio, |
| 990 | unsigned int port_irqs) |
| 991 | { |
| 992 | struct mv_host_priv *hpriv = ap->host->private_data; |
| 993 | int hardport = mv_hardport_from_port(ap->port_no); |
| 994 | void __iomem *hc_mmio = mv_hc_base_from_port( |
| 995 | mv_host_base(ap->host), ap->port_no); |
| 996 | u32 hc_irq_cause; |
| 997 | |
| 998 | /* clear EDMA event indicators, if any */ |
| 999 | writelfl(0, port_mmio + EDMA_ERR_IRQ_CAUSE_OFS); |
| 1000 | |
| 1001 | /* clear pending irq events */ |
| 1002 | hc_irq_cause = ~((DEV_IRQ | DMA_IRQ) << hardport); |
| 1003 | writelfl(hc_irq_cause, hc_mmio + HC_IRQ_CAUSE_OFS); |
| 1004 | |
| 1005 | /* clear FIS IRQ Cause */ |
| 1006 | if (IS_GEN_IIE(hpriv)) |
| 1007 | writelfl(0, port_mmio + SATA_FIS_IRQ_CAUSE_OFS); |
| 1008 | |
| 1009 | mv_enable_port_irqs(ap, port_irqs); |
| 1010 | } |
| 1011 | |
Mark Lord | 2b748a0 | 2009-03-10 22:01:17 -0400 | [diff] [blame^] | 1012 | static void mv_set_irq_coalescing(struct ata_host *host, |
| 1013 | unsigned int count, unsigned int usecs) |
| 1014 | { |
| 1015 | struct mv_host_priv *hpriv = host->private_data; |
| 1016 | void __iomem *mmio = hpriv->base, *hc_mmio; |
| 1017 | u32 coal_enable = 0; |
| 1018 | unsigned long flags; |
| 1019 | unsigned int clks; |
| 1020 | const u32 coal_disable = PORTS_0_3_COAL_DONE | PORTS_4_7_COAL_DONE | |
| 1021 | ALL_PORTS_COAL_DONE; |
| 1022 | |
| 1023 | /* Disable IRQ coalescing if either threshold is zero */ |
| 1024 | if (!usecs || !count) { |
| 1025 | clks = count = 0; |
| 1026 | } else { |
| 1027 | /* Respect maximum limits of the hardware */ |
| 1028 | clks = usecs * COAL_CLOCKS_PER_USEC; |
| 1029 | if (clks > MAX_COAL_TIME_THRESHOLD) |
| 1030 | clks = MAX_COAL_TIME_THRESHOLD; |
| 1031 | if (count > MAX_COAL_IO_COUNT) |
| 1032 | count = MAX_COAL_IO_COUNT; |
| 1033 | } |
| 1034 | |
| 1035 | spin_lock_irqsave(&host->lock, flags); |
| 1036 | |
| 1037 | #if 0 /* disabled pending functional clarification from Marvell */ |
| 1038 | if (!IS_GEN_I(hpriv)) { |
| 1039 | /* |
| 1040 | * GEN_II/GEN_IIE: global thresholds for the entire chip. |
| 1041 | */ |
| 1042 | writel(clks, mmio + MV_IRQ_COAL_TIME_THRESHOLD); |
| 1043 | writel(count, mmio + MV_IRQ_COAL_IO_THRESHOLD); |
| 1044 | /* clear leftover coal IRQ bit */ |
| 1045 | writelfl(~ALL_PORTS_COAL_IRQ, mmio + MV_IRQ_COAL_CAUSE); |
| 1046 | clks = count = 0; /* so as to clear the alternate regs below */ |
| 1047 | coal_enable = ALL_PORTS_COAL_DONE; |
| 1048 | } |
| 1049 | #endif |
| 1050 | /* |
| 1051 | * All chips: independent thresholds for each HC on the chip. |
| 1052 | */ |
| 1053 | hc_mmio = mv_hc_base_from_port(mmio, 0); |
| 1054 | writel(clks, hc_mmio + HC_IRQ_COAL_TIME_THRESHOLD_OFS); |
| 1055 | writel(count, hc_mmio + HC_IRQ_COAL_IO_THRESHOLD_OFS); |
| 1056 | coal_enable |= PORTS_0_3_COAL_DONE; |
| 1057 | if (hpriv->n_ports > 4) { |
| 1058 | hc_mmio = mv_hc_base_from_port(mmio, MV_PORTS_PER_HC); |
| 1059 | writel(clks, hc_mmio + HC_IRQ_COAL_TIME_THRESHOLD_OFS); |
| 1060 | writel(count, hc_mmio + HC_IRQ_COAL_IO_THRESHOLD_OFS); |
| 1061 | coal_enable |= PORTS_4_7_COAL_DONE; |
| 1062 | } |
| 1063 | if (!count) |
| 1064 | coal_enable = 0; |
| 1065 | mv_set_main_irq_mask(host, coal_disable, coal_enable); |
| 1066 | |
| 1067 | spin_unlock_irqrestore(&host->lock, flags); |
| 1068 | } |
| 1069 | |
Brett Russ | 05b308e | 2005-10-05 17:08:53 -0400 | [diff] [blame] | 1070 | /** |
Mark Lord | 00b8123 | 2009-01-30 18:47:51 -0500 | [diff] [blame] | 1071 | * mv_start_edma - Enable eDMA engine |
Brett Russ | 05b308e | 2005-10-05 17:08:53 -0400 | [diff] [blame] | 1072 | * @base: port base address |
| 1073 | * @pp: port private data |
| 1074 | * |
Tejun Heo | beec7db | 2006-02-11 19:11:13 +0900 | [diff] [blame] | 1075 | * Verify the local cache of the eDMA state is accurate with a |
| 1076 | * WARN_ON. |
Brett Russ | 05b308e | 2005-10-05 17:08:53 -0400 | [diff] [blame] | 1077 | * |
| 1078 | * LOCKING: |
| 1079 | * Inherited from caller. |
| 1080 | */ |
Mark Lord | 00b8123 | 2009-01-30 18:47:51 -0500 | [diff] [blame] | 1081 | static void mv_start_edma(struct ata_port *ap, void __iomem *port_mmio, |
Mark Lord | 7210916 | 2008-01-26 18:31:33 -0500 | [diff] [blame] | 1082 | struct mv_port_priv *pp, u8 protocol) |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 1083 | { |
Mark Lord | 7210916 | 2008-01-26 18:31:33 -0500 | [diff] [blame] | 1084 | int want_ncq = (protocol == ATA_PROT_NCQ); |
| 1085 | |
| 1086 | if (pp->pp_flags & MV_PP_FLAG_EDMA_EN) { |
| 1087 | int using_ncq = ((pp->pp_flags & MV_PP_FLAG_NCQ_EN) != 0); |
| 1088 | if (want_ncq != using_ncq) |
Mark Lord | b562468 | 2008-03-31 19:34:40 -0400 | [diff] [blame] | 1089 | mv_stop_edma(ap); |
Mark Lord | 7210916 | 2008-01-26 18:31:33 -0500 | [diff] [blame] | 1090 | } |
Jeff Garzik | c5d3e45 | 2007-07-11 18:30:50 -0400 | [diff] [blame] | 1091 | if (!(pp->pp_flags & MV_PP_FLAG_EDMA_EN)) { |
Mark Lord | 0c58912 | 2008-01-26 18:31:16 -0500 | [diff] [blame] | 1092 | struct mv_host_priv *hpriv = ap->host->private_data; |
Mark Lord | 0c58912 | 2008-01-26 18:31:16 -0500 | [diff] [blame] | 1093 | |
Mark Lord | 00b8123 | 2009-01-30 18:47:51 -0500 | [diff] [blame] | 1094 | mv_edma_cfg(ap, want_ncq, 1); |
Mark Lord | 0c58912 | 2008-01-26 18:31:16 -0500 | [diff] [blame] | 1095 | |
Mark Lord | f630d56 | 2008-01-26 18:31:00 -0500 | [diff] [blame] | 1096 | mv_set_edma_ptrs(port_mmio, hpriv, pp); |
Mark Lord | 00b8123 | 2009-01-30 18:47:51 -0500 | [diff] [blame] | 1097 | mv_clear_and_enable_port_irqs(ap, port_mmio, DONE_IRQ|ERR_IRQ); |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 1098 | |
Mark Lord | f630d56 | 2008-01-26 18:31:00 -0500 | [diff] [blame] | 1099 | writelfl(EDMA_EN, port_mmio + EDMA_CMD_OFS); |
Brett Russ | afb0edd | 2005-10-05 17:08:42 -0400 | [diff] [blame] | 1100 | pp->pp_flags |= MV_PP_FLAG_EDMA_EN; |
| 1101 | } |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 1102 | } |
| 1103 | |
Mark Lord | 9b2c4e0 | 2008-05-02 02:09:14 -0400 | [diff] [blame] | 1104 | static void mv_wait_for_edma_empty_idle(struct ata_port *ap) |
| 1105 | { |
| 1106 | void __iomem *port_mmio = mv_ap_base(ap); |
| 1107 | const u32 empty_idle = (EDMA_STATUS_CACHE_EMPTY | EDMA_STATUS_IDLE); |
| 1108 | const int per_loop = 5, timeout = (15 * 1000 / per_loop); |
| 1109 | int i; |
| 1110 | |
| 1111 | /* |
| 1112 | * Wait for the EDMA engine to finish transactions in progress. |
Mark Lord | c46938c | 2008-05-02 14:02:28 -0400 | [diff] [blame] | 1113 | * No idea what a good "timeout" value might be, but measurements |
| 1114 | * indicate that it often requires hundreds of microseconds |
| 1115 | * with two drives in-use. So we use the 15msec value above |
| 1116 | * as a rough guess at what even more drives might require. |
Mark Lord | 9b2c4e0 | 2008-05-02 02:09:14 -0400 | [diff] [blame] | 1117 | */ |
| 1118 | for (i = 0; i < timeout; ++i) { |
| 1119 | u32 edma_stat = readl(port_mmio + EDMA_STATUS_OFS); |
| 1120 | if ((edma_stat & empty_idle) == empty_idle) |
| 1121 | break; |
| 1122 | udelay(per_loop); |
| 1123 | } |
| 1124 | /* ata_port_printk(ap, KERN_INFO, "%s: %u+ usecs\n", __func__, i); */ |
| 1125 | } |
| 1126 | |
Brett Russ | 05b308e | 2005-10-05 17:08:53 -0400 | [diff] [blame] | 1127 | /** |
Mark Lord | e12bef5 | 2008-03-31 19:33:56 -0400 | [diff] [blame] | 1128 | * mv_stop_edma_engine - Disable eDMA engine |
Mark Lord | b562468 | 2008-03-31 19:34:40 -0400 | [diff] [blame] | 1129 | * @port_mmio: io base address |
Brett Russ | 05b308e | 2005-10-05 17:08:53 -0400 | [diff] [blame] | 1130 | * |
| 1131 | * LOCKING: |
| 1132 | * Inherited from caller. |
| 1133 | */ |
Mark Lord | b562468 | 2008-03-31 19:34:40 -0400 | [diff] [blame] | 1134 | static int mv_stop_edma_engine(void __iomem *port_mmio) |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 1135 | { |
Mark Lord | b562468 | 2008-03-31 19:34:40 -0400 | [diff] [blame] | 1136 | int i; |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 1137 | |
Mark Lord | b562468 | 2008-03-31 19:34:40 -0400 | [diff] [blame] | 1138 | /* Disable eDMA. The disable bit auto clears. */ |
| 1139 | writelfl(EDMA_DS, port_mmio + EDMA_CMD_OFS); |
Jeff Garzik | 8b26024 | 2005-11-12 12:32:50 -0500 | [diff] [blame] | 1140 | |
Mark Lord | b562468 | 2008-03-31 19:34:40 -0400 | [diff] [blame] | 1141 | /* Wait for the chip to confirm eDMA is off. */ |
| 1142 | for (i = 10000; i > 0; i--) { |
| 1143 | u32 reg = readl(port_mmio + EDMA_CMD_OFS); |
Jeff Garzik | 4537deb | 2007-07-12 14:30:19 -0400 | [diff] [blame] | 1144 | if (!(reg & EDMA_EN)) |
Mark Lord | b562468 | 2008-03-31 19:34:40 -0400 | [diff] [blame] | 1145 | return 0; |
| 1146 | udelay(10); |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 1147 | } |
Mark Lord | b562468 | 2008-03-31 19:34:40 -0400 | [diff] [blame] | 1148 | return -EIO; |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 1149 | } |
| 1150 | |
Mark Lord | e12bef5 | 2008-03-31 19:33:56 -0400 | [diff] [blame] | 1151 | static int mv_stop_edma(struct ata_port *ap) |
Jeff Garzik | 0ea9e17 | 2007-07-13 17:06:45 -0400 | [diff] [blame] | 1152 | { |
Mark Lord | b562468 | 2008-03-31 19:34:40 -0400 | [diff] [blame] | 1153 | void __iomem *port_mmio = mv_ap_base(ap); |
| 1154 | struct mv_port_priv *pp = ap->private_data; |
Mark Lord | 66e57a2 | 2009-01-30 18:52:58 -0500 | [diff] [blame] | 1155 | int err = 0; |
Jeff Garzik | 0ea9e17 | 2007-07-13 17:06:45 -0400 | [diff] [blame] | 1156 | |
Mark Lord | b562468 | 2008-03-31 19:34:40 -0400 | [diff] [blame] | 1157 | if (!(pp->pp_flags & MV_PP_FLAG_EDMA_EN)) |
| 1158 | return 0; |
| 1159 | pp->pp_flags &= ~MV_PP_FLAG_EDMA_EN; |
Mark Lord | 9b2c4e0 | 2008-05-02 02:09:14 -0400 | [diff] [blame] | 1160 | mv_wait_for_edma_empty_idle(ap); |
Mark Lord | b562468 | 2008-03-31 19:34:40 -0400 | [diff] [blame] | 1161 | if (mv_stop_edma_engine(port_mmio)) { |
| 1162 | ata_port_printk(ap, KERN_ERR, "Unable to stop eDMA\n"); |
Mark Lord | 66e57a2 | 2009-01-30 18:52:58 -0500 | [diff] [blame] | 1163 | err = -EIO; |
Mark Lord | b562468 | 2008-03-31 19:34:40 -0400 | [diff] [blame] | 1164 | } |
Mark Lord | 66e57a2 | 2009-01-30 18:52:58 -0500 | [diff] [blame] | 1165 | mv_edma_cfg(ap, 0, 0); |
| 1166 | return err; |
Jeff Garzik | 0ea9e17 | 2007-07-13 17:06:45 -0400 | [diff] [blame] | 1167 | } |
| 1168 | |
Jeff Garzik | 8a70f8d | 2005-10-05 17:19:47 -0400 | [diff] [blame] | 1169 | #ifdef ATA_DEBUG |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 1170 | static void mv_dump_mem(void __iomem *start, unsigned bytes) |
| 1171 | { |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 1172 | int b, w; |
| 1173 | for (b = 0; b < bytes; ) { |
| 1174 | DPRINTK("%p: ", start + b); |
| 1175 | for (w = 0; b < bytes && w < 4; w++) { |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 1176 | printk("%08x ", readl(start + b)); |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 1177 | b += sizeof(u32); |
| 1178 | } |
| 1179 | printk("\n"); |
| 1180 | } |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 1181 | } |
Jeff Garzik | 8a70f8d | 2005-10-05 17:19:47 -0400 | [diff] [blame] | 1182 | #endif |
| 1183 | |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 1184 | static void mv_dump_pci_cfg(struct pci_dev *pdev, unsigned bytes) |
| 1185 | { |
| 1186 | #ifdef ATA_DEBUG |
| 1187 | int b, w; |
| 1188 | u32 dw; |
| 1189 | for (b = 0; b < bytes; ) { |
| 1190 | DPRINTK("%02x: ", b); |
| 1191 | for (w = 0; b < bytes && w < 4; w++) { |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 1192 | (void) pci_read_config_dword(pdev, b, &dw); |
| 1193 | printk("%08x ", dw); |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 1194 | b += sizeof(u32); |
| 1195 | } |
| 1196 | printk("\n"); |
| 1197 | } |
| 1198 | #endif |
| 1199 | } |
| 1200 | static void mv_dump_all_regs(void __iomem *mmio_base, int port, |
| 1201 | struct pci_dev *pdev) |
| 1202 | { |
| 1203 | #ifdef ATA_DEBUG |
Jeff Garzik | 8b26024 | 2005-11-12 12:32:50 -0500 | [diff] [blame] | 1204 | void __iomem *hc_base = mv_hc_base(mmio_base, |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 1205 | port >> MV_PORT_HC_SHIFT); |
| 1206 | void __iomem *port_base; |
| 1207 | int start_port, num_ports, p, start_hc, num_hcs, hc; |
| 1208 | |
| 1209 | if (0 > port) { |
| 1210 | start_hc = start_port = 0; |
| 1211 | num_ports = 8; /* shld be benign for 4 port devs */ |
| 1212 | num_hcs = 2; |
| 1213 | } else { |
| 1214 | start_hc = port >> MV_PORT_HC_SHIFT; |
| 1215 | start_port = port; |
| 1216 | num_ports = num_hcs = 1; |
| 1217 | } |
Jeff Garzik | 8b26024 | 2005-11-12 12:32:50 -0500 | [diff] [blame] | 1218 | DPRINTK("All registers for port(s) %u-%u:\n", start_port, |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 1219 | num_ports > 1 ? num_ports - 1 : start_port); |
| 1220 | |
| 1221 | if (NULL != pdev) { |
| 1222 | DPRINTK("PCI config space regs:\n"); |
| 1223 | mv_dump_pci_cfg(pdev, 0x68); |
| 1224 | } |
| 1225 | DPRINTK("PCI regs:\n"); |
| 1226 | mv_dump_mem(mmio_base+0xc00, 0x3c); |
| 1227 | mv_dump_mem(mmio_base+0xd00, 0x34); |
| 1228 | mv_dump_mem(mmio_base+0xf00, 0x4); |
| 1229 | mv_dump_mem(mmio_base+0x1d00, 0x6c); |
| 1230 | for (hc = start_hc; hc < start_hc + num_hcs; hc++) { |
Dan Aloni | d220c37 | 2006-04-10 23:20:22 -0700 | [diff] [blame] | 1231 | hc_base = mv_hc_base(mmio_base, hc); |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 1232 | DPRINTK("HC regs (HC %i):\n", hc); |
| 1233 | mv_dump_mem(hc_base, 0x1c); |
| 1234 | } |
| 1235 | for (p = start_port; p < start_port + num_ports; p++) { |
| 1236 | port_base = mv_port_base(mmio_base, p); |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 1237 | DPRINTK("EDMA regs (port %i):\n", p); |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 1238 | mv_dump_mem(port_base, 0x54); |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 1239 | DPRINTK("SATA regs (port %i):\n", p); |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 1240 | mv_dump_mem(port_base+0x300, 0x60); |
| 1241 | } |
| 1242 | #endif |
| 1243 | } |
| 1244 | |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 1245 | static unsigned int mv_scr_offset(unsigned int sc_reg_in) |
| 1246 | { |
| 1247 | unsigned int ofs; |
| 1248 | |
| 1249 | switch (sc_reg_in) { |
| 1250 | case SCR_STATUS: |
| 1251 | case SCR_CONTROL: |
| 1252 | case SCR_ERROR: |
| 1253 | ofs = SATA_STATUS_OFS + (sc_reg_in * sizeof(u32)); |
| 1254 | break; |
| 1255 | case SCR_ACTIVE: |
| 1256 | ofs = SATA_ACTIVE_OFS; /* active is not with the others */ |
| 1257 | break; |
| 1258 | default: |
| 1259 | ofs = 0xffffffffU; |
| 1260 | break; |
| 1261 | } |
| 1262 | return ofs; |
| 1263 | } |
| 1264 | |
Tejun Heo | 82ef04f | 2008-07-31 17:02:40 +0900 | [diff] [blame] | 1265 | static int mv_scr_read(struct ata_link *link, unsigned int sc_reg_in, u32 *val) |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 1266 | { |
| 1267 | unsigned int ofs = mv_scr_offset(sc_reg_in); |
| 1268 | |
Tejun Heo | da3dbb1 | 2007-07-16 14:29:40 +0900 | [diff] [blame] | 1269 | if (ofs != 0xffffffffU) { |
Tejun Heo | 82ef04f | 2008-07-31 17:02:40 +0900 | [diff] [blame] | 1270 | *val = readl(mv_ap_base(link->ap) + ofs); |
Tejun Heo | da3dbb1 | 2007-07-16 14:29:40 +0900 | [diff] [blame] | 1271 | return 0; |
| 1272 | } else |
| 1273 | return -EINVAL; |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 1274 | } |
| 1275 | |
Tejun Heo | 82ef04f | 2008-07-31 17:02:40 +0900 | [diff] [blame] | 1276 | static int mv_scr_write(struct ata_link *link, unsigned int sc_reg_in, u32 val) |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 1277 | { |
| 1278 | unsigned int ofs = mv_scr_offset(sc_reg_in); |
| 1279 | |
Tejun Heo | da3dbb1 | 2007-07-16 14:29:40 +0900 | [diff] [blame] | 1280 | if (ofs != 0xffffffffU) { |
Tejun Heo | 82ef04f | 2008-07-31 17:02:40 +0900 | [diff] [blame] | 1281 | writelfl(val, mv_ap_base(link->ap) + ofs); |
Tejun Heo | da3dbb1 | 2007-07-16 14:29:40 +0900 | [diff] [blame] | 1282 | return 0; |
| 1283 | } else |
| 1284 | return -EINVAL; |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 1285 | } |
| 1286 | |
Mark Lord | f273827 | 2008-01-26 18:32:29 -0500 | [diff] [blame] | 1287 | static void mv6_dev_config(struct ata_device *adev) |
| 1288 | { |
| 1289 | /* |
Mark Lord | e49856d | 2008-04-16 14:59:07 -0400 | [diff] [blame] | 1290 | * Deal with Gen-II ("mv6") hardware quirks/restrictions: |
| 1291 | * |
| 1292 | * Gen-II does not support NCQ over a port multiplier |
| 1293 | * (no FIS-based switching). |
Mark Lord | f273827 | 2008-01-26 18:32:29 -0500 | [diff] [blame] | 1294 | */ |
Mark Lord | e49856d | 2008-04-16 14:59:07 -0400 | [diff] [blame] | 1295 | if (adev->flags & ATA_DFLAG_NCQ) { |
Mark Lord | 352fab7 | 2008-04-19 14:43:42 -0400 | [diff] [blame] | 1296 | if (sata_pmp_attached(adev->link->ap)) { |
Mark Lord | e49856d | 2008-04-16 14:59:07 -0400 | [diff] [blame] | 1297 | adev->flags &= ~ATA_DFLAG_NCQ; |
Mark Lord | 352fab7 | 2008-04-19 14:43:42 -0400 | [diff] [blame] | 1298 | ata_dev_printk(adev, KERN_INFO, |
| 1299 | "NCQ disabled for command-based switching\n"); |
Mark Lord | 352fab7 | 2008-04-19 14:43:42 -0400 | [diff] [blame] | 1300 | } |
Mark Lord | e49856d | 2008-04-16 14:59:07 -0400 | [diff] [blame] | 1301 | } |
Mark Lord | f273827 | 2008-01-26 18:32:29 -0500 | [diff] [blame] | 1302 | } |
| 1303 | |
Mark Lord | 3e4a139 | 2008-05-02 02:10:02 -0400 | [diff] [blame] | 1304 | static int mv_qc_defer(struct ata_queued_cmd *qc) |
| 1305 | { |
| 1306 | struct ata_link *link = qc->dev->link; |
| 1307 | struct ata_port *ap = link->ap; |
| 1308 | struct mv_port_priv *pp = ap->private_data; |
| 1309 | |
| 1310 | /* |
Mark Lord | 29d187b | 2008-05-02 02:15:37 -0400 | [diff] [blame] | 1311 | * Don't allow new commands if we're in a delayed EH state |
| 1312 | * for NCQ and/or FIS-based switching. |
| 1313 | */ |
| 1314 | if (pp->pp_flags & MV_PP_FLAG_DELAYED_EH) |
| 1315 | return ATA_DEFER_PORT; |
| 1316 | /* |
Mark Lord | 3e4a139 | 2008-05-02 02:10:02 -0400 | [diff] [blame] | 1317 | * If the port is completely idle, then allow the new qc. |
| 1318 | */ |
| 1319 | if (ap->nr_active_links == 0) |
| 1320 | return 0; |
| 1321 | |
Tejun Heo | 4bdee6c | 2008-08-13 20:24:16 +0900 | [diff] [blame] | 1322 | /* |
| 1323 | * The port is operating in host queuing mode (EDMA) with NCQ |
| 1324 | * enabled, allow multiple NCQ commands. EDMA also allows |
| 1325 | * queueing multiple DMA commands but libata core currently |
| 1326 | * doesn't allow it. |
| 1327 | */ |
| 1328 | if ((pp->pp_flags & MV_PP_FLAG_EDMA_EN) && |
| 1329 | (pp->pp_flags & MV_PP_FLAG_NCQ_EN) && ata_is_ncq(qc->tf.protocol)) |
| 1330 | return 0; |
| 1331 | |
Mark Lord | 3e4a139 | 2008-05-02 02:10:02 -0400 | [diff] [blame] | 1332 | return ATA_DEFER_PORT; |
| 1333 | } |
| 1334 | |
Mark Lord | 08da175 | 2009-02-25 15:13:03 -0500 | [diff] [blame] | 1335 | static void mv_config_fbs(struct ata_port *ap, int want_ncq, int want_fbs) |
Mark Lord | e49856d | 2008-04-16 14:59:07 -0400 | [diff] [blame] | 1336 | { |
Mark Lord | 08da175 | 2009-02-25 15:13:03 -0500 | [diff] [blame] | 1337 | struct mv_port_priv *pp = ap->private_data; |
| 1338 | void __iomem *port_mmio; |
Mark Lord | 00f42ea | 2008-05-02 02:11:45 -0400 | [diff] [blame] | 1339 | |
Mark Lord | 08da175 | 2009-02-25 15:13:03 -0500 | [diff] [blame] | 1340 | u32 fiscfg, *old_fiscfg = &pp->cached.fiscfg; |
| 1341 | u32 ltmode, *old_ltmode = &pp->cached.ltmode; |
| 1342 | u32 haltcond, *old_haltcond = &pp->cached.haltcond; |
Mark Lord | 00f42ea | 2008-05-02 02:11:45 -0400 | [diff] [blame] | 1343 | |
Mark Lord | 08da175 | 2009-02-25 15:13:03 -0500 | [diff] [blame] | 1344 | ltmode = *old_ltmode & ~LTMODE_BIT8; |
| 1345 | haltcond = *old_haltcond | EDMA_ERR_DEV; |
Mark Lord | 00f42ea | 2008-05-02 02:11:45 -0400 | [diff] [blame] | 1346 | |
| 1347 | if (want_fbs) { |
Mark Lord | 08da175 | 2009-02-25 15:13:03 -0500 | [diff] [blame] | 1348 | fiscfg = *old_fiscfg | FISCFG_SINGLE_SYNC; |
| 1349 | ltmode = *old_ltmode | LTMODE_BIT8; |
Mark Lord | 4c299ca | 2008-05-02 02:16:20 -0400 | [diff] [blame] | 1350 | if (want_ncq) |
Mark Lord | 08da175 | 2009-02-25 15:13:03 -0500 | [diff] [blame] | 1351 | haltcond &= ~EDMA_ERR_DEV; |
Mark Lord | 4c299ca | 2008-05-02 02:16:20 -0400 | [diff] [blame] | 1352 | else |
Mark Lord | 08da175 | 2009-02-25 15:13:03 -0500 | [diff] [blame] | 1353 | fiscfg |= FISCFG_WAIT_DEV_ERR; |
| 1354 | } else { |
| 1355 | fiscfg = *old_fiscfg & ~(FISCFG_SINGLE_SYNC | FISCFG_WAIT_DEV_ERR); |
Mark Lord | e49856d | 2008-04-16 14:59:07 -0400 | [diff] [blame] | 1356 | } |
Mark Lord | 00f42ea | 2008-05-02 02:11:45 -0400 | [diff] [blame] | 1357 | |
Mark Lord | 08da175 | 2009-02-25 15:13:03 -0500 | [diff] [blame] | 1358 | port_mmio = mv_ap_base(ap); |
| 1359 | mv_write_cached_reg(port_mmio + FISCFG_OFS, old_fiscfg, fiscfg); |
| 1360 | mv_write_cached_reg(port_mmio + LTMODE_OFS, old_ltmode, ltmode); |
| 1361 | mv_write_cached_reg(port_mmio + EDMA_HALTCOND_OFS, old_haltcond, haltcond); |
Mark Lord | 0c58912 | 2008-01-26 18:31:16 -0500 | [diff] [blame] | 1362 | } |
Jeff Garzik | e4e7b89 | 2006-01-31 12:18:41 -0500 | [diff] [blame] | 1363 | |
Mark Lord | dd2890f | 2008-05-02 02:10:56 -0400 | [diff] [blame] | 1364 | static void mv_60x1_errata_sata25(struct ata_port *ap, int want_ncq) |
| 1365 | { |
| 1366 | struct mv_host_priv *hpriv = ap->host->private_data; |
| 1367 | u32 old, new; |
| 1368 | |
| 1369 | /* workaround for 88SX60x1 FEr SATA#25 (part 1) */ |
| 1370 | old = readl(hpriv->base + MV_GPIO_PORT_CTL_OFS); |
| 1371 | if (want_ncq) |
| 1372 | new = old | (1 << 22); |
| 1373 | else |
| 1374 | new = old & ~(1 << 22); |
| 1375 | if (new != old) |
| 1376 | writel(new, hpriv->base + MV_GPIO_PORT_CTL_OFS); |
| 1377 | } |
| 1378 | |
Mark Lord | c01e8a2 | 2009-02-25 15:14:48 -0500 | [diff] [blame] | 1379 | /** |
Mark Lord | 40f21b1 | 2009-03-10 18:51:04 -0400 | [diff] [blame] | 1380 | * mv_bmdma_enable - set a magic bit on GEN_IIE to allow bmdma |
| 1381 | * @ap: Port being initialized |
Mark Lord | c01e8a2 | 2009-02-25 15:14:48 -0500 | [diff] [blame] | 1382 | * |
| 1383 | * There are two DMA modes on these chips: basic DMA, and EDMA. |
| 1384 | * |
| 1385 | * Bit-0 of the "EDMA RESERVED" register enables/disables use |
| 1386 | * of basic DMA on the GEN_IIE versions of the chips. |
| 1387 | * |
| 1388 | * This bit survives EDMA resets, and must be set for basic DMA |
| 1389 | * to function, and should be cleared when EDMA is active. |
| 1390 | */ |
| 1391 | static void mv_bmdma_enable_iie(struct ata_port *ap, int enable_bmdma) |
| 1392 | { |
| 1393 | struct mv_port_priv *pp = ap->private_data; |
| 1394 | u32 new, *old = &pp->cached.unknown_rsvd; |
| 1395 | |
| 1396 | if (enable_bmdma) |
| 1397 | new = *old | 1; |
| 1398 | else |
| 1399 | new = *old & ~1; |
| 1400 | mv_write_cached_reg(mv_ap_base(ap) + EDMA_UNKNOWN_RSVD_OFS, old, new); |
| 1401 | } |
| 1402 | |
Mark Lord | 00b8123 | 2009-01-30 18:47:51 -0500 | [diff] [blame] | 1403 | static void mv_edma_cfg(struct ata_port *ap, int want_ncq, int want_edma) |
Jeff Garzik | e4e7b89 | 2006-01-31 12:18:41 -0500 | [diff] [blame] | 1404 | { |
| 1405 | u32 cfg; |
Mark Lord | e12bef5 | 2008-03-31 19:33:56 -0400 | [diff] [blame] | 1406 | struct mv_port_priv *pp = ap->private_data; |
| 1407 | struct mv_host_priv *hpriv = ap->host->private_data; |
| 1408 | void __iomem *port_mmio = mv_ap_base(ap); |
Jeff Garzik | e4e7b89 | 2006-01-31 12:18:41 -0500 | [diff] [blame] | 1409 | |
| 1410 | /* set up non-NCQ EDMA configuration */ |
| 1411 | cfg = EDMA_CFG_Q_DEPTH; /* always 0x1f for *all* chips */ |
Mark Lord | d16ab3f | 2009-02-25 15:17:43 -0500 | [diff] [blame] | 1412 | pp->pp_flags &= |
| 1413 | ~(MV_PP_FLAG_FBS_EN | MV_PP_FLAG_NCQ_EN | MV_PP_FLAG_FAKE_ATA_BUSY); |
Jeff Garzik | e4e7b89 | 2006-01-31 12:18:41 -0500 | [diff] [blame] | 1414 | |
| 1415 | if (IS_GEN_I(hpriv)) |
| 1416 | cfg |= (1 << 8); /* enab config burst size mask */ |
| 1417 | |
Mark Lord | dd2890f | 2008-05-02 02:10:56 -0400 | [diff] [blame] | 1418 | else if (IS_GEN_II(hpriv)) { |
Jeff Garzik | e4e7b89 | 2006-01-31 12:18:41 -0500 | [diff] [blame] | 1419 | cfg |= EDMA_CFG_RD_BRST_EXT | EDMA_CFG_WR_BUFF_LEN; |
Mark Lord | dd2890f | 2008-05-02 02:10:56 -0400 | [diff] [blame] | 1420 | mv_60x1_errata_sata25(ap, want_ncq); |
Jeff Garzik | e4e7b89 | 2006-01-31 12:18:41 -0500 | [diff] [blame] | 1421 | |
Mark Lord | dd2890f | 2008-05-02 02:10:56 -0400 | [diff] [blame] | 1422 | } else if (IS_GEN_IIE(hpriv)) { |
Mark Lord | 00f42ea | 2008-05-02 02:11:45 -0400 | [diff] [blame] | 1423 | int want_fbs = sata_pmp_attached(ap); |
| 1424 | /* |
| 1425 | * Possible future enhancement: |
| 1426 | * |
| 1427 | * The chip can use FBS with non-NCQ, if we allow it, |
| 1428 | * But first we need to have the error handling in place |
| 1429 | * for this mode (datasheet section 7.3.15.4.2.3). |
| 1430 | * So disallow non-NCQ FBS for now. |
| 1431 | */ |
| 1432 | want_fbs &= want_ncq; |
| 1433 | |
Mark Lord | 08da175 | 2009-02-25 15:13:03 -0500 | [diff] [blame] | 1434 | mv_config_fbs(ap, want_ncq, want_fbs); |
Mark Lord | 00f42ea | 2008-05-02 02:11:45 -0400 | [diff] [blame] | 1435 | |
| 1436 | if (want_fbs) { |
| 1437 | pp->pp_flags |= MV_PP_FLAG_FBS_EN; |
| 1438 | cfg |= EDMA_CFG_EDMA_FBS; /* FIS-based switching */ |
| 1439 | } |
| 1440 | |
Jeff Garzik | e728eab | 2007-02-25 02:53:41 -0500 | [diff] [blame] | 1441 | cfg |= (1 << 23); /* do not mask PM field in rx'd FIS */ |
Mark Lord | 00b8123 | 2009-01-30 18:47:51 -0500 | [diff] [blame] | 1442 | if (want_edma) { |
| 1443 | cfg |= (1 << 22); /* enab 4-entry host queue cache */ |
| 1444 | if (!IS_SOC(hpriv)) |
| 1445 | cfg |= (1 << 18); /* enab early completion */ |
| 1446 | } |
Mark Lord | 616d4a9 | 2008-05-02 02:08:32 -0400 | [diff] [blame] | 1447 | if (hpriv->hp_flags & MV_HP_CUT_THROUGH) |
| 1448 | cfg |= (1 << 17); /* enab cut-thru (dis stor&forwrd) */ |
Mark Lord | c01e8a2 | 2009-02-25 15:14:48 -0500 | [diff] [blame] | 1449 | mv_bmdma_enable_iie(ap, !want_edma); |
Jeff Garzik | e4e7b89 | 2006-01-31 12:18:41 -0500 | [diff] [blame] | 1450 | } |
| 1451 | |
Mark Lord | 7210916 | 2008-01-26 18:31:33 -0500 | [diff] [blame] | 1452 | if (want_ncq) { |
| 1453 | cfg |= EDMA_CFG_NCQ; |
| 1454 | pp->pp_flags |= MV_PP_FLAG_NCQ_EN; |
Mark Lord | 00b8123 | 2009-01-30 18:47:51 -0500 | [diff] [blame] | 1455 | } |
Mark Lord | 7210916 | 2008-01-26 18:31:33 -0500 | [diff] [blame] | 1456 | |
Jeff Garzik | e4e7b89 | 2006-01-31 12:18:41 -0500 | [diff] [blame] | 1457 | writelfl(cfg, port_mmio + EDMA_CFG_OFS); |
| 1458 | } |
| 1459 | |
Mark Lord | da2fa9b | 2008-01-26 18:32:45 -0500 | [diff] [blame] | 1460 | static void mv_port_free_dma_mem(struct ata_port *ap) |
| 1461 | { |
| 1462 | struct mv_host_priv *hpriv = ap->host->private_data; |
| 1463 | struct mv_port_priv *pp = ap->private_data; |
Mark Lord | eb73d55 | 2008-01-29 13:24:00 -0500 | [diff] [blame] | 1464 | int tag; |
Mark Lord | da2fa9b | 2008-01-26 18:32:45 -0500 | [diff] [blame] | 1465 | |
| 1466 | if (pp->crqb) { |
| 1467 | dma_pool_free(hpriv->crqb_pool, pp->crqb, pp->crqb_dma); |
| 1468 | pp->crqb = NULL; |
| 1469 | } |
| 1470 | if (pp->crpb) { |
| 1471 | dma_pool_free(hpriv->crpb_pool, pp->crpb, pp->crpb_dma); |
| 1472 | pp->crpb = NULL; |
| 1473 | } |
Mark Lord | eb73d55 | 2008-01-29 13:24:00 -0500 | [diff] [blame] | 1474 | /* |
| 1475 | * For GEN_I, there's no NCQ, so we have only a single sg_tbl. |
| 1476 | * For later hardware, we have one unique sg_tbl per NCQ tag. |
| 1477 | */ |
| 1478 | for (tag = 0; tag < MV_MAX_Q_DEPTH; ++tag) { |
| 1479 | if (pp->sg_tbl[tag]) { |
| 1480 | if (tag == 0 || !IS_GEN_I(hpriv)) |
| 1481 | dma_pool_free(hpriv->sg_tbl_pool, |
| 1482 | pp->sg_tbl[tag], |
| 1483 | pp->sg_tbl_dma[tag]); |
| 1484 | pp->sg_tbl[tag] = NULL; |
| 1485 | } |
Mark Lord | da2fa9b | 2008-01-26 18:32:45 -0500 | [diff] [blame] | 1486 | } |
| 1487 | } |
| 1488 | |
Brett Russ | 05b308e | 2005-10-05 17:08:53 -0400 | [diff] [blame] | 1489 | /** |
| 1490 | * mv_port_start - Port specific init/start routine. |
| 1491 | * @ap: ATA channel to manipulate |
| 1492 | * |
| 1493 | * Allocate and point to DMA memory, init port private memory, |
| 1494 | * zero indices. |
| 1495 | * |
| 1496 | * LOCKING: |
| 1497 | * Inherited from caller. |
| 1498 | */ |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 1499 | static int mv_port_start(struct ata_port *ap) |
| 1500 | { |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 1501 | struct device *dev = ap->host->dev; |
| 1502 | struct mv_host_priv *hpriv = ap->host->private_data; |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 1503 | struct mv_port_priv *pp; |
James Bottomley | dde2020 | 2008-02-19 11:36:56 +0100 | [diff] [blame] | 1504 | int tag; |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 1505 | |
Tejun Heo | 24dc5f3 | 2007-01-20 16:00:28 +0900 | [diff] [blame] | 1506 | pp = devm_kzalloc(dev, sizeof(*pp), GFP_KERNEL); |
Jeff Garzik | 6037d6b | 2005-11-04 22:08:00 -0500 | [diff] [blame] | 1507 | if (!pp) |
Tejun Heo | 24dc5f3 | 2007-01-20 16:00:28 +0900 | [diff] [blame] | 1508 | return -ENOMEM; |
Mark Lord | da2fa9b | 2008-01-26 18:32:45 -0500 | [diff] [blame] | 1509 | ap->private_data = pp; |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 1510 | |
Mark Lord | da2fa9b | 2008-01-26 18:32:45 -0500 | [diff] [blame] | 1511 | pp->crqb = dma_pool_alloc(hpriv->crqb_pool, GFP_KERNEL, &pp->crqb_dma); |
| 1512 | if (!pp->crqb) |
| 1513 | return -ENOMEM; |
| 1514 | memset(pp->crqb, 0, MV_CRQB_Q_SZ); |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 1515 | |
Mark Lord | da2fa9b | 2008-01-26 18:32:45 -0500 | [diff] [blame] | 1516 | pp->crpb = dma_pool_alloc(hpriv->crpb_pool, GFP_KERNEL, &pp->crpb_dma); |
| 1517 | if (!pp->crpb) |
| 1518 | goto out_port_free_dma_mem; |
| 1519 | memset(pp->crpb, 0, MV_CRPB_Q_SZ); |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 1520 | |
Mark Lord | 3bd0a70 | 2008-06-18 12:11:16 -0400 | [diff] [blame] | 1521 | /* 6041/6081 Rev. "C0" (and newer) are okay with async notify */ |
| 1522 | if (hpriv->hp_flags & MV_HP_ERRATA_60X1C0) |
| 1523 | ap->flags |= ATA_FLAG_AN; |
Mark Lord | eb73d55 | 2008-01-29 13:24:00 -0500 | [diff] [blame] | 1524 | /* |
| 1525 | * For GEN_I, there's no NCQ, so we only allocate a single sg_tbl. |
| 1526 | * For later hardware, we need one unique sg_tbl per NCQ tag. |
| 1527 | */ |
| 1528 | for (tag = 0; tag < MV_MAX_Q_DEPTH; ++tag) { |
| 1529 | if (tag == 0 || !IS_GEN_I(hpriv)) { |
| 1530 | pp->sg_tbl[tag] = dma_pool_alloc(hpriv->sg_tbl_pool, |
| 1531 | GFP_KERNEL, &pp->sg_tbl_dma[tag]); |
| 1532 | if (!pp->sg_tbl[tag]) |
| 1533 | goto out_port_free_dma_mem; |
| 1534 | } else { |
| 1535 | pp->sg_tbl[tag] = pp->sg_tbl[0]; |
| 1536 | pp->sg_tbl_dma[tag] = pp->sg_tbl_dma[0]; |
| 1537 | } |
| 1538 | } |
Mark Lord | 08da175 | 2009-02-25 15:13:03 -0500 | [diff] [blame] | 1539 | mv_save_cached_regs(ap); |
Mark Lord | 66e57a2 | 2009-01-30 18:52:58 -0500 | [diff] [blame] | 1540 | mv_edma_cfg(ap, 0, 0); |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 1541 | return 0; |
Mark Lord | da2fa9b | 2008-01-26 18:32:45 -0500 | [diff] [blame] | 1542 | |
| 1543 | out_port_free_dma_mem: |
| 1544 | mv_port_free_dma_mem(ap); |
| 1545 | return -ENOMEM; |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 1546 | } |
| 1547 | |
Brett Russ | 05b308e | 2005-10-05 17:08:53 -0400 | [diff] [blame] | 1548 | /** |
| 1549 | * mv_port_stop - Port specific cleanup/stop routine. |
| 1550 | * @ap: ATA channel to manipulate |
| 1551 | * |
| 1552 | * Stop DMA, cleanup port memory. |
| 1553 | * |
| 1554 | * LOCKING: |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 1555 | * This routine uses the host lock to protect the DMA stop. |
Brett Russ | 05b308e | 2005-10-05 17:08:53 -0400 | [diff] [blame] | 1556 | */ |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 1557 | static void mv_port_stop(struct ata_port *ap) |
| 1558 | { |
Mark Lord | e12bef5 | 2008-03-31 19:33:56 -0400 | [diff] [blame] | 1559 | mv_stop_edma(ap); |
Mark Lord | 88e675e | 2008-05-17 13:36:30 -0400 | [diff] [blame] | 1560 | mv_enable_port_irqs(ap, 0); |
Mark Lord | da2fa9b | 2008-01-26 18:32:45 -0500 | [diff] [blame] | 1561 | mv_port_free_dma_mem(ap); |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 1562 | } |
| 1563 | |
Brett Russ | 05b308e | 2005-10-05 17:08:53 -0400 | [diff] [blame] | 1564 | /** |
| 1565 | * mv_fill_sg - Fill out the Marvell ePRD (scatter gather) entries |
| 1566 | * @qc: queued command whose SG list to source from |
| 1567 | * |
| 1568 | * Populate the SG list and mark the last entry. |
| 1569 | * |
| 1570 | * LOCKING: |
| 1571 | * Inherited from caller. |
| 1572 | */ |
Jeff Garzik | 6c08772 | 2007-10-12 00:16:23 -0400 | [diff] [blame] | 1573 | static void mv_fill_sg(struct ata_queued_cmd *qc) |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 1574 | { |
| 1575 | struct mv_port_priv *pp = qc->ap->private_data; |
Jeff Garzik | 972c26b | 2005-10-18 22:14:54 -0400 | [diff] [blame] | 1576 | struct scatterlist *sg; |
Jeff Garzik | 3be6cbd | 2007-10-18 16:21:18 -0400 | [diff] [blame] | 1577 | struct mv_sg *mv_sg, *last_sg = NULL; |
Tejun Heo | ff2aeb1 | 2007-12-05 16:43:11 +0900 | [diff] [blame] | 1578 | unsigned int si; |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 1579 | |
Mark Lord | eb73d55 | 2008-01-29 13:24:00 -0500 | [diff] [blame] | 1580 | mv_sg = pp->sg_tbl[qc->tag]; |
Tejun Heo | ff2aeb1 | 2007-12-05 16:43:11 +0900 | [diff] [blame] | 1581 | for_each_sg(qc->sg, sg, qc->n_elem, si) { |
Jeff Garzik | d88184f | 2007-02-26 01:26:06 -0500 | [diff] [blame] | 1582 | dma_addr_t addr = sg_dma_address(sg); |
| 1583 | u32 sg_len = sg_dma_len(sg); |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 1584 | |
Olof Johansson | 4007b49 | 2007-10-02 20:45:27 -0500 | [diff] [blame] | 1585 | while (sg_len) { |
| 1586 | u32 offset = addr & 0xffff; |
| 1587 | u32 len = sg_len; |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 1588 | |
Mark Lord | 32cd11a | 2009-02-01 16:50:32 -0500 | [diff] [blame] | 1589 | if (offset + len > 0x10000) |
Olof Johansson | 4007b49 | 2007-10-02 20:45:27 -0500 | [diff] [blame] | 1590 | len = 0x10000 - offset; |
Jeff Garzik | 972c26b | 2005-10-18 22:14:54 -0400 | [diff] [blame] | 1591 | |
Olof Johansson | 4007b49 | 2007-10-02 20:45:27 -0500 | [diff] [blame] | 1592 | mv_sg->addr = cpu_to_le32(addr & 0xffffffff); |
| 1593 | mv_sg->addr_hi = cpu_to_le32((addr >> 16) >> 16); |
Jeff Garzik | 6c08772 | 2007-10-12 00:16:23 -0400 | [diff] [blame] | 1594 | mv_sg->flags_size = cpu_to_le32(len & 0xffff); |
Mark Lord | 32cd11a | 2009-02-01 16:50:32 -0500 | [diff] [blame] | 1595 | mv_sg->reserved = 0; |
Olof Johansson | 4007b49 | 2007-10-02 20:45:27 -0500 | [diff] [blame] | 1596 | |
| 1597 | sg_len -= len; |
| 1598 | addr += len; |
| 1599 | |
Jeff Garzik | 3be6cbd | 2007-10-18 16:21:18 -0400 | [diff] [blame] | 1600 | last_sg = mv_sg; |
Olof Johansson | 4007b49 | 2007-10-02 20:45:27 -0500 | [diff] [blame] | 1601 | mv_sg++; |
Olof Johansson | 4007b49 | 2007-10-02 20:45:27 -0500 | [diff] [blame] | 1602 | } |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 1603 | } |
Jeff Garzik | 3be6cbd | 2007-10-18 16:21:18 -0400 | [diff] [blame] | 1604 | |
| 1605 | if (likely(last_sg)) |
| 1606 | last_sg->flags_size |= cpu_to_le32(EPRD_FLAG_END_OF_TBL); |
Mark Lord | 32cd11a | 2009-02-01 16:50:32 -0500 | [diff] [blame] | 1607 | mb(); /* ensure data structure is visible to the chipset */ |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 1608 | } |
| 1609 | |
Jeff Garzik | 5796d1c | 2007-10-26 00:03:37 -0400 | [diff] [blame] | 1610 | static void mv_crqb_pack_cmd(__le16 *cmdw, u8 data, u8 addr, unsigned last) |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 1611 | { |
Mark Lord | 559eeda | 2006-05-19 16:40:15 -0400 | [diff] [blame] | 1612 | u16 tmp = data | (addr << CRQB_CMD_ADDR_SHIFT) | CRQB_CMD_CS | |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 1613 | (last ? CRQB_CMD_LAST : 0); |
Mark Lord | 559eeda | 2006-05-19 16:40:15 -0400 | [diff] [blame] | 1614 | *cmdw = cpu_to_le16(tmp); |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 1615 | } |
| 1616 | |
Brett Russ | 05b308e | 2005-10-05 17:08:53 -0400 | [diff] [blame] | 1617 | /** |
Mark Lord | da14265 | 2009-01-30 18:51:54 -0500 | [diff] [blame] | 1618 | * mv_sff_irq_clear - Clear hardware interrupt after DMA. |
| 1619 | * @ap: Port associated with this ATA transaction. |
| 1620 | * |
| 1621 | * We need this only for ATAPI bmdma transactions, |
| 1622 | * as otherwise we experience spurious interrupts |
| 1623 | * after libata-sff handles the bmdma interrupts. |
| 1624 | */ |
| 1625 | static void mv_sff_irq_clear(struct ata_port *ap) |
| 1626 | { |
| 1627 | mv_clear_and_enable_port_irqs(ap, mv_ap_base(ap), ERR_IRQ); |
| 1628 | } |
| 1629 | |
| 1630 | /** |
| 1631 | * mv_check_atapi_dma - Filter ATAPI cmds which are unsuitable for DMA. |
| 1632 | * @qc: queued command to check for chipset/DMA compatibility. |
| 1633 | * |
| 1634 | * The bmdma engines cannot handle speculative data sizes |
| 1635 | * (bytecount under/over flow). So only allow DMA for |
| 1636 | * data transfer commands with known data sizes. |
| 1637 | * |
| 1638 | * LOCKING: |
| 1639 | * Inherited from caller. |
| 1640 | */ |
| 1641 | static int mv_check_atapi_dma(struct ata_queued_cmd *qc) |
| 1642 | { |
| 1643 | struct scsi_cmnd *scmd = qc->scsicmd; |
| 1644 | |
| 1645 | if (scmd) { |
| 1646 | switch (scmd->cmnd[0]) { |
| 1647 | case READ_6: |
| 1648 | case READ_10: |
| 1649 | case READ_12: |
| 1650 | case WRITE_6: |
| 1651 | case WRITE_10: |
| 1652 | case WRITE_12: |
| 1653 | case GPCMD_READ_CD: |
| 1654 | case GPCMD_SEND_DVD_STRUCTURE: |
| 1655 | case GPCMD_SEND_CUE_SHEET: |
| 1656 | return 0; /* DMA is safe */ |
| 1657 | } |
| 1658 | } |
| 1659 | return -EOPNOTSUPP; /* use PIO instead */ |
| 1660 | } |
| 1661 | |
| 1662 | /** |
| 1663 | * mv_bmdma_setup - Set up BMDMA transaction |
| 1664 | * @qc: queued command to prepare DMA for. |
| 1665 | * |
| 1666 | * LOCKING: |
| 1667 | * Inherited from caller. |
| 1668 | */ |
| 1669 | static void mv_bmdma_setup(struct ata_queued_cmd *qc) |
| 1670 | { |
| 1671 | struct ata_port *ap = qc->ap; |
| 1672 | void __iomem *port_mmio = mv_ap_base(ap); |
| 1673 | struct mv_port_priv *pp = ap->private_data; |
| 1674 | |
| 1675 | mv_fill_sg(qc); |
| 1676 | |
| 1677 | /* clear all DMA cmd bits */ |
| 1678 | writel(0, port_mmio + BMDMA_CMD_OFS); |
| 1679 | |
| 1680 | /* load PRD table addr. */ |
| 1681 | writel((pp->sg_tbl_dma[qc->tag] >> 16) >> 16, |
| 1682 | port_mmio + BMDMA_PRD_HIGH_OFS); |
| 1683 | writelfl(pp->sg_tbl_dma[qc->tag], |
| 1684 | port_mmio + BMDMA_PRD_LOW_OFS); |
| 1685 | |
| 1686 | /* issue r/w command */ |
| 1687 | ap->ops->sff_exec_command(ap, &qc->tf); |
| 1688 | } |
| 1689 | |
| 1690 | /** |
| 1691 | * mv_bmdma_start - Start a BMDMA transaction |
| 1692 | * @qc: queued command to start DMA on. |
| 1693 | * |
| 1694 | * LOCKING: |
| 1695 | * Inherited from caller. |
| 1696 | */ |
| 1697 | static void mv_bmdma_start(struct ata_queued_cmd *qc) |
| 1698 | { |
| 1699 | struct ata_port *ap = qc->ap; |
| 1700 | void __iomem *port_mmio = mv_ap_base(ap); |
| 1701 | unsigned int rw = (qc->tf.flags & ATA_TFLAG_WRITE); |
| 1702 | u32 cmd = (rw ? 0 : ATA_DMA_WR) | ATA_DMA_START; |
| 1703 | |
| 1704 | /* start host DMA transaction */ |
| 1705 | writelfl(cmd, port_mmio + BMDMA_CMD_OFS); |
| 1706 | } |
| 1707 | |
| 1708 | /** |
| 1709 | * mv_bmdma_stop - Stop BMDMA transfer |
| 1710 | * @qc: queued command to stop DMA on. |
| 1711 | * |
| 1712 | * Clears the ATA_DMA_START flag in the bmdma control register |
| 1713 | * |
| 1714 | * LOCKING: |
| 1715 | * Inherited from caller. |
| 1716 | */ |
| 1717 | static void mv_bmdma_stop(struct ata_queued_cmd *qc) |
| 1718 | { |
| 1719 | struct ata_port *ap = qc->ap; |
| 1720 | void __iomem *port_mmio = mv_ap_base(ap); |
| 1721 | u32 cmd; |
| 1722 | |
| 1723 | /* clear start/stop bit */ |
| 1724 | cmd = readl(port_mmio + BMDMA_CMD_OFS); |
| 1725 | cmd &= ~ATA_DMA_START; |
| 1726 | writelfl(cmd, port_mmio + BMDMA_CMD_OFS); |
| 1727 | |
| 1728 | /* one-PIO-cycle guaranteed wait, per spec, for HDMA1:0 transition */ |
| 1729 | ata_sff_dma_pause(ap); |
| 1730 | } |
| 1731 | |
| 1732 | /** |
| 1733 | * mv_bmdma_status - Read BMDMA status |
| 1734 | * @ap: port for which to retrieve DMA status. |
| 1735 | * |
| 1736 | * Read and return equivalent of the sff BMDMA status register. |
| 1737 | * |
| 1738 | * LOCKING: |
| 1739 | * Inherited from caller. |
| 1740 | */ |
| 1741 | static u8 mv_bmdma_status(struct ata_port *ap) |
| 1742 | { |
| 1743 | void __iomem *port_mmio = mv_ap_base(ap); |
| 1744 | u32 reg, status; |
| 1745 | |
| 1746 | /* |
| 1747 | * Other bits are valid only if ATA_DMA_ACTIVE==0, |
| 1748 | * and the ATA_DMA_INTR bit doesn't exist. |
| 1749 | */ |
| 1750 | reg = readl(port_mmio + BMDMA_STATUS_OFS); |
| 1751 | if (reg & ATA_DMA_ACTIVE) |
| 1752 | status = ATA_DMA_ACTIVE; |
| 1753 | else |
| 1754 | status = (reg & ATA_DMA_ERR) | ATA_DMA_INTR; |
| 1755 | return status; |
| 1756 | } |
| 1757 | |
| 1758 | /** |
Brett Russ | 05b308e | 2005-10-05 17:08:53 -0400 | [diff] [blame] | 1759 | * mv_qc_prep - Host specific command preparation. |
| 1760 | * @qc: queued command to prepare |
| 1761 | * |
| 1762 | * This routine simply redirects to the general purpose routine |
| 1763 | * if command is not DMA. Else, it handles prep of the CRQB |
| 1764 | * (command request block), does some sanity checking, and calls |
| 1765 | * the SG load routine. |
| 1766 | * |
| 1767 | * LOCKING: |
| 1768 | * Inherited from caller. |
| 1769 | */ |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 1770 | static void mv_qc_prep(struct ata_queued_cmd *qc) |
| 1771 | { |
| 1772 | struct ata_port *ap = qc->ap; |
| 1773 | struct mv_port_priv *pp = ap->private_data; |
Mark Lord | e146987 | 2006-05-22 19:02:03 -0400 | [diff] [blame] | 1774 | __le16 *cw; |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 1775 | struct ata_taskfile *tf; |
| 1776 | u16 flags = 0; |
Mark Lord | a643243 | 2006-05-19 16:36:36 -0400 | [diff] [blame] | 1777 | unsigned in_index; |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 1778 | |
Mark Lord | 138bfdd | 2008-01-26 18:33:18 -0500 | [diff] [blame] | 1779 | if ((qc->tf.protocol != ATA_PROT_DMA) && |
| 1780 | (qc->tf.protocol != ATA_PROT_NCQ)) |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 1781 | return; |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 1782 | |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 1783 | /* Fill in command request block |
| 1784 | */ |
Jeff Garzik | e4e7b89 | 2006-01-31 12:18:41 -0500 | [diff] [blame] | 1785 | if (!(qc->tf.flags & ATA_TFLAG_WRITE)) |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 1786 | flags |= CRQB_FLAG_READ; |
Tejun Heo | beec7db | 2006-02-11 19:11:13 +0900 | [diff] [blame] | 1787 | WARN_ON(MV_MAX_Q_DEPTH <= qc->tag); |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 1788 | flags |= qc->tag << CRQB_TAG_SHIFT; |
Mark Lord | e49856d | 2008-04-16 14:59:07 -0400 | [diff] [blame] | 1789 | flags |= (qc->dev->link->pmp & 0xf) << CRQB_PMP_SHIFT; |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 1790 | |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 1791 | /* get current queue index from software */ |
Mark Lord | fcfb1f7 | 2008-04-19 15:06:40 -0400 | [diff] [blame] | 1792 | in_index = pp->req_idx; |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 1793 | |
Mark Lord | a643243 | 2006-05-19 16:36:36 -0400 | [diff] [blame] | 1794 | pp->crqb[in_index].sg_addr = |
Mark Lord | eb73d55 | 2008-01-29 13:24:00 -0500 | [diff] [blame] | 1795 | cpu_to_le32(pp->sg_tbl_dma[qc->tag] & 0xffffffff); |
Mark Lord | a643243 | 2006-05-19 16:36:36 -0400 | [diff] [blame] | 1796 | pp->crqb[in_index].sg_addr_hi = |
Mark Lord | eb73d55 | 2008-01-29 13:24:00 -0500 | [diff] [blame] | 1797 | cpu_to_le32((pp->sg_tbl_dma[qc->tag] >> 16) >> 16); |
Mark Lord | a643243 | 2006-05-19 16:36:36 -0400 | [diff] [blame] | 1798 | pp->crqb[in_index].ctrl_flags = cpu_to_le16(flags); |
| 1799 | |
| 1800 | cw = &pp->crqb[in_index].ata_cmd[0]; |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 1801 | tf = &qc->tf; |
| 1802 | |
| 1803 | /* Sadly, the CRQB cannot accomodate all registers--there are |
| 1804 | * only 11 bytes...so we must pick and choose required |
| 1805 | * registers based on the command. So, we drop feature and |
| 1806 | * hob_feature for [RW] DMA commands, but they are needed for |
Mark Lord | cd12e1f | 2009-01-19 18:06:28 -0500 | [diff] [blame] | 1807 | * NCQ. NCQ will drop hob_nsect, which is not needed there |
| 1808 | * (nsect is used only for the tag; feat/hob_feat hold true nsect). |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 1809 | */ |
| 1810 | switch (tf->command) { |
| 1811 | case ATA_CMD_READ: |
| 1812 | case ATA_CMD_READ_EXT: |
| 1813 | case ATA_CMD_WRITE: |
| 1814 | case ATA_CMD_WRITE_EXT: |
Jens Axboe | c15d85c | 2006-02-15 15:59:25 +0100 | [diff] [blame] | 1815 | case ATA_CMD_WRITE_FUA_EXT: |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 1816 | mv_crqb_pack_cmd(cw++, tf->hob_nsect, ATA_REG_NSECT, 0); |
| 1817 | break; |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 1818 | case ATA_CMD_FPDMA_READ: |
| 1819 | case ATA_CMD_FPDMA_WRITE: |
Jeff Garzik | 8b26024 | 2005-11-12 12:32:50 -0500 | [diff] [blame] | 1820 | mv_crqb_pack_cmd(cw++, tf->hob_feature, ATA_REG_FEATURE, 0); |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 1821 | mv_crqb_pack_cmd(cw++, tf->feature, ATA_REG_FEATURE, 0); |
| 1822 | break; |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 1823 | default: |
| 1824 | /* The only other commands EDMA supports in non-queued and |
| 1825 | * non-NCQ mode are: [RW] STREAM DMA and W DMA FUA EXT, none |
| 1826 | * of which are defined/used by Linux. If we get here, this |
| 1827 | * driver needs work. |
| 1828 | * |
| 1829 | * FIXME: modify libata to give qc_prep a return value and |
| 1830 | * return error here. |
| 1831 | */ |
| 1832 | BUG_ON(tf->command); |
| 1833 | break; |
| 1834 | } |
| 1835 | mv_crqb_pack_cmd(cw++, tf->nsect, ATA_REG_NSECT, 0); |
| 1836 | mv_crqb_pack_cmd(cw++, tf->hob_lbal, ATA_REG_LBAL, 0); |
| 1837 | mv_crqb_pack_cmd(cw++, tf->lbal, ATA_REG_LBAL, 0); |
| 1838 | mv_crqb_pack_cmd(cw++, tf->hob_lbam, ATA_REG_LBAM, 0); |
| 1839 | mv_crqb_pack_cmd(cw++, tf->lbam, ATA_REG_LBAM, 0); |
| 1840 | mv_crqb_pack_cmd(cw++, tf->hob_lbah, ATA_REG_LBAH, 0); |
| 1841 | mv_crqb_pack_cmd(cw++, tf->lbah, ATA_REG_LBAH, 0); |
| 1842 | mv_crqb_pack_cmd(cw++, tf->device, ATA_REG_DEVICE, 0); |
| 1843 | mv_crqb_pack_cmd(cw++, tf->command, ATA_REG_CMD, 1); /* last */ |
| 1844 | |
Jeff Garzik | e4e7b89 | 2006-01-31 12:18:41 -0500 | [diff] [blame] | 1845 | if (!(qc->flags & ATA_QCFLAG_DMAMAP)) |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 1846 | return; |
Jeff Garzik | e4e7b89 | 2006-01-31 12:18:41 -0500 | [diff] [blame] | 1847 | mv_fill_sg(qc); |
| 1848 | } |
| 1849 | |
| 1850 | /** |
| 1851 | * mv_qc_prep_iie - Host specific command preparation. |
| 1852 | * @qc: queued command to prepare |
| 1853 | * |
| 1854 | * This routine simply redirects to the general purpose routine |
| 1855 | * if command is not DMA. Else, it handles prep of the CRQB |
| 1856 | * (command request block), does some sanity checking, and calls |
| 1857 | * the SG load routine. |
| 1858 | * |
| 1859 | * LOCKING: |
| 1860 | * Inherited from caller. |
| 1861 | */ |
| 1862 | static void mv_qc_prep_iie(struct ata_queued_cmd *qc) |
| 1863 | { |
| 1864 | struct ata_port *ap = qc->ap; |
| 1865 | struct mv_port_priv *pp = ap->private_data; |
| 1866 | struct mv_crqb_iie *crqb; |
| 1867 | struct ata_taskfile *tf; |
Mark Lord | a643243 | 2006-05-19 16:36:36 -0400 | [diff] [blame] | 1868 | unsigned in_index; |
Jeff Garzik | e4e7b89 | 2006-01-31 12:18:41 -0500 | [diff] [blame] | 1869 | u32 flags = 0; |
| 1870 | |
Mark Lord | 138bfdd | 2008-01-26 18:33:18 -0500 | [diff] [blame] | 1871 | if ((qc->tf.protocol != ATA_PROT_DMA) && |
| 1872 | (qc->tf.protocol != ATA_PROT_NCQ)) |
Jeff Garzik | e4e7b89 | 2006-01-31 12:18:41 -0500 | [diff] [blame] | 1873 | return; |
| 1874 | |
Mark Lord | e12bef5 | 2008-03-31 19:33:56 -0400 | [diff] [blame] | 1875 | /* Fill in Gen IIE command request block */ |
Jeff Garzik | e4e7b89 | 2006-01-31 12:18:41 -0500 | [diff] [blame] | 1876 | if (!(qc->tf.flags & ATA_TFLAG_WRITE)) |
| 1877 | flags |= CRQB_FLAG_READ; |
| 1878 | |
Tejun Heo | beec7db | 2006-02-11 19:11:13 +0900 | [diff] [blame] | 1879 | WARN_ON(MV_MAX_Q_DEPTH <= qc->tag); |
Jeff Garzik | e4e7b89 | 2006-01-31 12:18:41 -0500 | [diff] [blame] | 1880 | flags |= qc->tag << CRQB_TAG_SHIFT; |
Mark Lord | 8c0aeb4 | 2008-01-26 18:31:48 -0500 | [diff] [blame] | 1881 | flags |= qc->tag << CRQB_HOSTQ_SHIFT; |
Mark Lord | e49856d | 2008-04-16 14:59:07 -0400 | [diff] [blame] | 1882 | flags |= (qc->dev->link->pmp & 0xf) << CRQB_PMP_SHIFT; |
Jeff Garzik | e4e7b89 | 2006-01-31 12:18:41 -0500 | [diff] [blame] | 1883 | |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 1884 | /* get current queue index from software */ |
Mark Lord | fcfb1f7 | 2008-04-19 15:06:40 -0400 | [diff] [blame] | 1885 | in_index = pp->req_idx; |
Mark Lord | a643243 | 2006-05-19 16:36:36 -0400 | [diff] [blame] | 1886 | |
| 1887 | crqb = (struct mv_crqb_iie *) &pp->crqb[in_index]; |
Mark Lord | eb73d55 | 2008-01-29 13:24:00 -0500 | [diff] [blame] | 1888 | crqb->addr = cpu_to_le32(pp->sg_tbl_dma[qc->tag] & 0xffffffff); |
| 1889 | crqb->addr_hi = cpu_to_le32((pp->sg_tbl_dma[qc->tag] >> 16) >> 16); |
Jeff Garzik | e4e7b89 | 2006-01-31 12:18:41 -0500 | [diff] [blame] | 1890 | crqb->flags = cpu_to_le32(flags); |
| 1891 | |
| 1892 | tf = &qc->tf; |
| 1893 | crqb->ata_cmd[0] = cpu_to_le32( |
| 1894 | (tf->command << 16) | |
| 1895 | (tf->feature << 24) |
| 1896 | ); |
| 1897 | crqb->ata_cmd[1] = cpu_to_le32( |
| 1898 | (tf->lbal << 0) | |
| 1899 | (tf->lbam << 8) | |
| 1900 | (tf->lbah << 16) | |
| 1901 | (tf->device << 24) |
| 1902 | ); |
| 1903 | crqb->ata_cmd[2] = cpu_to_le32( |
| 1904 | (tf->hob_lbal << 0) | |
| 1905 | (tf->hob_lbam << 8) | |
| 1906 | (tf->hob_lbah << 16) | |
| 1907 | (tf->hob_feature << 24) |
| 1908 | ); |
| 1909 | crqb->ata_cmd[3] = cpu_to_le32( |
| 1910 | (tf->nsect << 0) | |
| 1911 | (tf->hob_nsect << 8) |
| 1912 | ); |
| 1913 | |
| 1914 | if (!(qc->flags & ATA_QCFLAG_DMAMAP)) |
| 1915 | return; |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 1916 | mv_fill_sg(qc); |
| 1917 | } |
| 1918 | |
Brett Russ | 05b308e | 2005-10-05 17:08:53 -0400 | [diff] [blame] | 1919 | /** |
Mark Lord | d16ab3f | 2009-02-25 15:17:43 -0500 | [diff] [blame] | 1920 | * mv_sff_check_status - fetch device status, if valid |
| 1921 | * @ap: ATA port to fetch status from |
| 1922 | * |
| 1923 | * When using command issue via mv_qc_issue_fis(), |
| 1924 | * the initial ATA_BUSY state does not show up in the |
| 1925 | * ATA status (shadow) register. This can confuse libata! |
| 1926 | * |
| 1927 | * So we have a hook here to fake ATA_BUSY for that situation, |
| 1928 | * until the first time a BUSY, DRQ, or ERR bit is seen. |
| 1929 | * |
| 1930 | * The rest of the time, it simply returns the ATA status register. |
| 1931 | */ |
| 1932 | static u8 mv_sff_check_status(struct ata_port *ap) |
| 1933 | { |
| 1934 | u8 stat = ioread8(ap->ioaddr.status_addr); |
| 1935 | struct mv_port_priv *pp = ap->private_data; |
| 1936 | |
| 1937 | if (pp->pp_flags & MV_PP_FLAG_FAKE_ATA_BUSY) { |
| 1938 | if (stat & (ATA_BUSY | ATA_DRQ | ATA_ERR)) |
| 1939 | pp->pp_flags &= ~MV_PP_FLAG_FAKE_ATA_BUSY; |
| 1940 | else |
| 1941 | stat = ATA_BUSY; |
| 1942 | } |
| 1943 | return stat; |
| 1944 | } |
| 1945 | |
| 1946 | /** |
Mark Lord | 70f8b79 | 2009-02-25 15:19:20 -0500 | [diff] [blame] | 1947 | * mv_send_fis - Send a FIS, using the "Vendor-Unique FIS" register |
| 1948 | * @fis: fis to be sent |
| 1949 | * @nwords: number of 32-bit words in the fis |
| 1950 | */ |
| 1951 | static unsigned int mv_send_fis(struct ata_port *ap, u32 *fis, int nwords) |
| 1952 | { |
| 1953 | void __iomem *port_mmio = mv_ap_base(ap); |
| 1954 | u32 ifctl, old_ifctl, ifstat; |
| 1955 | int i, timeout = 200, final_word = nwords - 1; |
| 1956 | |
| 1957 | /* Initiate FIS transmission mode */ |
| 1958 | old_ifctl = readl(port_mmio + SATA_IFCTL_OFS); |
| 1959 | ifctl = 0x100 | (old_ifctl & 0xf); |
| 1960 | writelfl(ifctl, port_mmio + SATA_IFCTL_OFS); |
| 1961 | |
| 1962 | /* Send all words of the FIS except for the final word */ |
| 1963 | for (i = 0; i < final_word; ++i) |
| 1964 | writel(fis[i], port_mmio + VENDOR_UNIQUE_FIS_OFS); |
| 1965 | |
| 1966 | /* Flag end-of-transmission, and then send the final word */ |
| 1967 | writelfl(ifctl | 0x200, port_mmio + SATA_IFCTL_OFS); |
| 1968 | writelfl(fis[final_word], port_mmio + VENDOR_UNIQUE_FIS_OFS); |
| 1969 | |
| 1970 | /* |
| 1971 | * Wait for FIS transmission to complete. |
| 1972 | * This typically takes just a single iteration. |
| 1973 | */ |
| 1974 | do { |
| 1975 | ifstat = readl(port_mmio + SATA_IFSTAT_OFS); |
| 1976 | } while (!(ifstat & 0x1000) && --timeout); |
| 1977 | |
| 1978 | /* Restore original port configuration */ |
| 1979 | writelfl(old_ifctl, port_mmio + SATA_IFCTL_OFS); |
| 1980 | |
| 1981 | /* See if it worked */ |
| 1982 | if ((ifstat & 0x3000) != 0x1000) { |
| 1983 | ata_port_printk(ap, KERN_WARNING, |
| 1984 | "%s transmission error, ifstat=%08x\n", |
| 1985 | __func__, ifstat); |
| 1986 | return AC_ERR_OTHER; |
| 1987 | } |
| 1988 | return 0; |
| 1989 | } |
| 1990 | |
| 1991 | /** |
| 1992 | * mv_qc_issue_fis - Issue a command directly as a FIS |
| 1993 | * @qc: queued command to start |
| 1994 | * |
| 1995 | * Note that the ATA shadow registers are not updated |
| 1996 | * after command issue, so the device will appear "READY" |
| 1997 | * if polled, even while it is BUSY processing the command. |
| 1998 | * |
| 1999 | * So we use a status hook to fake ATA_BUSY until the drive changes state. |
| 2000 | * |
| 2001 | * Note: we don't get updated shadow regs on *completion* |
| 2002 | * of non-data commands. So avoid sending them via this function, |
| 2003 | * as they will appear to have completed immediately. |
| 2004 | * |
| 2005 | * GEN_IIE has special registers that we could get the result tf from, |
| 2006 | * but earlier chipsets do not. For now, we ignore those registers. |
| 2007 | */ |
| 2008 | static unsigned int mv_qc_issue_fis(struct ata_queued_cmd *qc) |
| 2009 | { |
| 2010 | struct ata_port *ap = qc->ap; |
| 2011 | struct mv_port_priv *pp = ap->private_data; |
| 2012 | struct ata_link *link = qc->dev->link; |
| 2013 | u32 fis[5]; |
| 2014 | int err = 0; |
| 2015 | |
| 2016 | ata_tf_to_fis(&qc->tf, link->pmp, 1, (void *)fis); |
| 2017 | err = mv_send_fis(ap, fis, sizeof(fis) / sizeof(fis[0])); |
| 2018 | if (err) |
| 2019 | return err; |
| 2020 | |
| 2021 | switch (qc->tf.protocol) { |
| 2022 | case ATAPI_PROT_PIO: |
| 2023 | pp->pp_flags |= MV_PP_FLAG_FAKE_ATA_BUSY; |
| 2024 | /* fall through */ |
| 2025 | case ATAPI_PROT_NODATA: |
| 2026 | ap->hsm_task_state = HSM_ST_FIRST; |
| 2027 | break; |
| 2028 | case ATA_PROT_PIO: |
| 2029 | pp->pp_flags |= MV_PP_FLAG_FAKE_ATA_BUSY; |
| 2030 | if (qc->tf.flags & ATA_TFLAG_WRITE) |
| 2031 | ap->hsm_task_state = HSM_ST_FIRST; |
| 2032 | else |
| 2033 | ap->hsm_task_state = HSM_ST; |
| 2034 | break; |
| 2035 | default: |
| 2036 | ap->hsm_task_state = HSM_ST_LAST; |
| 2037 | break; |
| 2038 | } |
| 2039 | |
| 2040 | if (qc->tf.flags & ATA_TFLAG_POLLING) |
| 2041 | ata_pio_queue_task(ap, qc, 0); |
| 2042 | return 0; |
| 2043 | } |
| 2044 | |
| 2045 | /** |
Brett Russ | 05b308e | 2005-10-05 17:08:53 -0400 | [diff] [blame] | 2046 | * mv_qc_issue - Initiate a command to the host |
| 2047 | * @qc: queued command to start |
| 2048 | * |
| 2049 | * This routine simply redirects to the general purpose routine |
| 2050 | * if command is not DMA. Else, it sanity checks our local |
| 2051 | * caches of the request producer/consumer indices then enables |
| 2052 | * DMA and bumps the request producer index. |
| 2053 | * |
| 2054 | * LOCKING: |
| 2055 | * Inherited from caller. |
| 2056 | */ |
Tejun Heo | 9a3d9eb | 2006-01-23 13:09:36 +0900 | [diff] [blame] | 2057 | static unsigned int mv_qc_issue(struct ata_queued_cmd *qc) |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 2058 | { |
Mark Lord | f48765c | 2009-01-30 18:48:41 -0500 | [diff] [blame] | 2059 | static int limit_warnings = 10; |
Jeff Garzik | c5d3e45 | 2007-07-11 18:30:50 -0400 | [diff] [blame] | 2060 | struct ata_port *ap = qc->ap; |
| 2061 | void __iomem *port_mmio = mv_ap_base(ap); |
| 2062 | struct mv_port_priv *pp = ap->private_data; |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 2063 | u32 in_index; |
Mark Lord | 42ed893 | 2009-02-25 15:15:39 -0500 | [diff] [blame] | 2064 | unsigned int port_irqs; |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 2065 | |
Mark Lord | d16ab3f | 2009-02-25 15:17:43 -0500 | [diff] [blame] | 2066 | pp->pp_flags &= ~MV_PP_FLAG_FAKE_ATA_BUSY; /* paranoia */ |
| 2067 | |
Mark Lord | f48765c | 2009-01-30 18:48:41 -0500 | [diff] [blame] | 2068 | switch (qc->tf.protocol) { |
| 2069 | case ATA_PROT_DMA: |
| 2070 | case ATA_PROT_NCQ: |
| 2071 | mv_start_edma(ap, port_mmio, pp, qc->tf.protocol); |
| 2072 | pp->req_idx = (pp->req_idx + 1) & MV_MAX_Q_DEPTH_MASK; |
| 2073 | in_index = pp->req_idx << EDMA_REQ_Q_PTR_SHIFT; |
| 2074 | |
| 2075 | /* Write the request in pointer to kick the EDMA to life */ |
| 2076 | writelfl((pp->crqb_dma & EDMA_REQ_Q_BASE_LO_MASK) | in_index, |
| 2077 | port_mmio + EDMA_REQ_Q_IN_PTR_OFS); |
| 2078 | return 0; |
| 2079 | |
| 2080 | case ATA_PROT_PIO: |
Mark Lord | c6112bd | 2008-06-18 12:13:02 -0400 | [diff] [blame] | 2081 | /* |
| 2082 | * Errata SATA#16, SATA#24: warn if multiple DRQs expected. |
| 2083 | * |
| 2084 | * Someday, we might implement special polling workarounds |
| 2085 | * for these, but it all seems rather unnecessary since we |
| 2086 | * normally use only DMA for commands which transfer more |
| 2087 | * than a single block of data. |
| 2088 | * |
| 2089 | * Much of the time, this could just work regardless. |
| 2090 | * So for now, just log the incident, and allow the attempt. |
| 2091 | */ |
Mark Lord | c7843e8 | 2008-06-18 21:57:42 -0400 | [diff] [blame] | 2092 | if (limit_warnings > 0 && (qc->nbytes / qc->sect_size) > 1) { |
Mark Lord | c6112bd | 2008-06-18 12:13:02 -0400 | [diff] [blame] | 2093 | --limit_warnings; |
| 2094 | ata_link_printk(qc->dev->link, KERN_WARNING, DRV_NAME |
| 2095 | ": attempting PIO w/multiple DRQ: " |
| 2096 | "this may fail due to h/w errata\n"); |
| 2097 | } |
Mark Lord | f48765c | 2009-01-30 18:48:41 -0500 | [diff] [blame] | 2098 | /* drop through */ |
Mark Lord | 42ed893 | 2009-02-25 15:15:39 -0500 | [diff] [blame] | 2099 | case ATA_PROT_NODATA: |
Mark Lord | f48765c | 2009-01-30 18:48:41 -0500 | [diff] [blame] | 2100 | case ATAPI_PROT_PIO: |
Mark Lord | 42ed893 | 2009-02-25 15:15:39 -0500 | [diff] [blame] | 2101 | case ATAPI_PROT_NODATA: |
| 2102 | if (ap->flags & ATA_FLAG_PIO_POLLING) |
| 2103 | qc->tf.flags |= ATA_TFLAG_POLLING; |
| 2104 | break; |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 2105 | } |
Mark Lord | 42ed893 | 2009-02-25 15:15:39 -0500 | [diff] [blame] | 2106 | |
| 2107 | if (qc->tf.flags & ATA_TFLAG_POLLING) |
| 2108 | port_irqs = ERR_IRQ; /* mask device interrupt when polling */ |
| 2109 | else |
| 2110 | port_irqs = ERR_IRQ | DONE_IRQ; /* unmask all interrupts */ |
| 2111 | |
| 2112 | /* |
| 2113 | * We're about to send a non-EDMA capable command to the |
| 2114 | * port. Turn off EDMA so there won't be problems accessing |
| 2115 | * shadow block, etc registers. |
| 2116 | */ |
| 2117 | mv_stop_edma(ap); |
| 2118 | mv_clear_and_enable_port_irqs(ap, mv_ap_base(ap), port_irqs); |
| 2119 | mv_pmp_select(ap, qc->dev->link->pmp); |
Mark Lord | 70f8b79 | 2009-02-25 15:19:20 -0500 | [diff] [blame] | 2120 | |
| 2121 | if (qc->tf.command == ATA_CMD_READ_LOG_EXT) { |
| 2122 | struct mv_host_priv *hpriv = ap->host->private_data; |
| 2123 | /* |
| 2124 | * Workaround for 88SX60x1 FEr SATA#25 (part 2). |
Mark Lord | 40f21b1 | 2009-03-10 18:51:04 -0400 | [diff] [blame] | 2125 | * |
Mark Lord | 70f8b79 | 2009-02-25 15:19:20 -0500 | [diff] [blame] | 2126 | * After any NCQ error, the READ_LOG_EXT command |
| 2127 | * from libata-eh *must* use mv_qc_issue_fis(). |
| 2128 | * Otherwise it might fail, due to chip errata. |
| 2129 | * |
| 2130 | * Rather than special-case it, we'll just *always* |
| 2131 | * use this method here for READ_LOG_EXT, making for |
| 2132 | * easier testing. |
| 2133 | */ |
| 2134 | if (IS_GEN_II(hpriv)) |
| 2135 | return mv_qc_issue_fis(qc); |
| 2136 | } |
Mark Lord | 42ed893 | 2009-02-25 15:15:39 -0500 | [diff] [blame] | 2137 | return ata_sff_qc_issue(qc); |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 2138 | } |
| 2139 | |
Mark Lord | 8f767f8 | 2008-04-19 14:53:07 -0400 | [diff] [blame] | 2140 | static struct ata_queued_cmd *mv_get_active_qc(struct ata_port *ap) |
| 2141 | { |
| 2142 | struct mv_port_priv *pp = ap->private_data; |
| 2143 | struct ata_queued_cmd *qc; |
| 2144 | |
| 2145 | if (pp->pp_flags & MV_PP_FLAG_NCQ_EN) |
| 2146 | return NULL; |
| 2147 | qc = ata_qc_from_tag(ap, ap->link.active_tag); |
Mark Lord | 95db505 | 2009-01-30 18:49:29 -0500 | [diff] [blame] | 2148 | if (qc) { |
| 2149 | if (qc->tf.flags & ATA_TFLAG_POLLING) |
| 2150 | qc = NULL; |
| 2151 | else if (!(qc->flags & ATA_QCFLAG_ACTIVE)) |
| 2152 | qc = NULL; |
| 2153 | } |
Mark Lord | 8f767f8 | 2008-04-19 14:53:07 -0400 | [diff] [blame] | 2154 | return qc; |
| 2155 | } |
| 2156 | |
Mark Lord | 29d187b | 2008-05-02 02:15:37 -0400 | [diff] [blame] | 2157 | static void mv_pmp_error_handler(struct ata_port *ap) |
| 2158 | { |
| 2159 | unsigned int pmp, pmp_map; |
| 2160 | struct mv_port_priv *pp = ap->private_data; |
| 2161 | |
| 2162 | if (pp->pp_flags & MV_PP_FLAG_DELAYED_EH) { |
| 2163 | /* |
| 2164 | * Perform NCQ error analysis on failed PMPs |
| 2165 | * before we freeze the port entirely. |
| 2166 | * |
| 2167 | * The failed PMPs are marked earlier by mv_pmp_eh_prep(). |
| 2168 | */ |
| 2169 | pmp_map = pp->delayed_eh_pmp_map; |
| 2170 | pp->pp_flags &= ~MV_PP_FLAG_DELAYED_EH; |
| 2171 | for (pmp = 0; pmp_map != 0; pmp++) { |
| 2172 | unsigned int this_pmp = (1 << pmp); |
| 2173 | if (pmp_map & this_pmp) { |
| 2174 | struct ata_link *link = &ap->pmp_link[pmp]; |
| 2175 | pmp_map &= ~this_pmp; |
| 2176 | ata_eh_analyze_ncq_error(link); |
| 2177 | } |
| 2178 | } |
| 2179 | ata_port_freeze(ap); |
| 2180 | } |
| 2181 | sata_pmp_error_handler(ap); |
| 2182 | } |
| 2183 | |
Mark Lord | 4c299ca | 2008-05-02 02:16:20 -0400 | [diff] [blame] | 2184 | static unsigned int mv_get_err_pmp_map(struct ata_port *ap) |
| 2185 | { |
| 2186 | void __iomem *port_mmio = mv_ap_base(ap); |
| 2187 | |
| 2188 | return readl(port_mmio + SATA_TESTCTL_OFS) >> 16; |
| 2189 | } |
| 2190 | |
Mark Lord | 4c299ca | 2008-05-02 02:16:20 -0400 | [diff] [blame] | 2191 | static void mv_pmp_eh_prep(struct ata_port *ap, unsigned int pmp_map) |
| 2192 | { |
| 2193 | struct ata_eh_info *ehi; |
| 2194 | unsigned int pmp; |
| 2195 | |
| 2196 | /* |
| 2197 | * Initialize EH info for PMPs which saw device errors |
| 2198 | */ |
| 2199 | ehi = &ap->link.eh_info; |
| 2200 | for (pmp = 0; pmp_map != 0; pmp++) { |
| 2201 | unsigned int this_pmp = (1 << pmp); |
| 2202 | if (pmp_map & this_pmp) { |
| 2203 | struct ata_link *link = &ap->pmp_link[pmp]; |
| 2204 | |
| 2205 | pmp_map &= ~this_pmp; |
| 2206 | ehi = &link->eh_info; |
| 2207 | ata_ehi_clear_desc(ehi); |
| 2208 | ata_ehi_push_desc(ehi, "dev err"); |
| 2209 | ehi->err_mask |= AC_ERR_DEV; |
| 2210 | ehi->action |= ATA_EH_RESET; |
| 2211 | ata_link_abort(link); |
| 2212 | } |
| 2213 | } |
| 2214 | } |
| 2215 | |
Mark Lord | 06aaca3 | 2008-05-19 09:01:24 -0400 | [diff] [blame] | 2216 | static int mv_req_q_empty(struct ata_port *ap) |
| 2217 | { |
| 2218 | void __iomem *port_mmio = mv_ap_base(ap); |
| 2219 | u32 in_ptr, out_ptr; |
| 2220 | |
| 2221 | in_ptr = (readl(port_mmio + EDMA_REQ_Q_IN_PTR_OFS) |
| 2222 | >> EDMA_REQ_Q_PTR_SHIFT) & MV_MAX_Q_DEPTH_MASK; |
| 2223 | out_ptr = (readl(port_mmio + EDMA_REQ_Q_OUT_PTR_OFS) |
| 2224 | >> EDMA_REQ_Q_PTR_SHIFT) & MV_MAX_Q_DEPTH_MASK; |
| 2225 | return (in_ptr == out_ptr); /* 1 == queue_is_empty */ |
| 2226 | } |
| 2227 | |
Mark Lord | 4c299ca | 2008-05-02 02:16:20 -0400 | [diff] [blame] | 2228 | static int mv_handle_fbs_ncq_dev_err(struct ata_port *ap) |
| 2229 | { |
| 2230 | struct mv_port_priv *pp = ap->private_data; |
| 2231 | int failed_links; |
| 2232 | unsigned int old_map, new_map; |
| 2233 | |
| 2234 | /* |
| 2235 | * Device error during FBS+NCQ operation: |
| 2236 | * |
| 2237 | * Set a port flag to prevent further I/O being enqueued. |
| 2238 | * Leave the EDMA running to drain outstanding commands from this port. |
| 2239 | * Perform the post-mortem/EH only when all responses are complete. |
| 2240 | * Follow recovery sequence from 6042/7042 datasheet (7.3.15.4.2.2). |
| 2241 | */ |
| 2242 | if (!(pp->pp_flags & MV_PP_FLAG_DELAYED_EH)) { |
| 2243 | pp->pp_flags |= MV_PP_FLAG_DELAYED_EH; |
| 2244 | pp->delayed_eh_pmp_map = 0; |
| 2245 | } |
| 2246 | old_map = pp->delayed_eh_pmp_map; |
| 2247 | new_map = old_map | mv_get_err_pmp_map(ap); |
| 2248 | |
| 2249 | if (old_map != new_map) { |
| 2250 | pp->delayed_eh_pmp_map = new_map; |
| 2251 | mv_pmp_eh_prep(ap, new_map & ~old_map); |
| 2252 | } |
Mark Lord | c46938c | 2008-05-02 14:02:28 -0400 | [diff] [blame] | 2253 | failed_links = hweight16(new_map); |
Mark Lord | 4c299ca | 2008-05-02 02:16:20 -0400 | [diff] [blame] | 2254 | |
| 2255 | ata_port_printk(ap, KERN_INFO, "%s: pmp_map=%04x qc_map=%04x " |
| 2256 | "failed_links=%d nr_active_links=%d\n", |
| 2257 | __func__, pp->delayed_eh_pmp_map, |
| 2258 | ap->qc_active, failed_links, |
| 2259 | ap->nr_active_links); |
| 2260 | |
Mark Lord | 06aaca3 | 2008-05-19 09:01:24 -0400 | [diff] [blame] | 2261 | if (ap->nr_active_links <= failed_links && mv_req_q_empty(ap)) { |
Mark Lord | 4c299ca | 2008-05-02 02:16:20 -0400 | [diff] [blame] | 2262 | mv_process_crpb_entries(ap, pp); |
| 2263 | mv_stop_edma(ap); |
| 2264 | mv_eh_freeze(ap); |
| 2265 | ata_port_printk(ap, KERN_INFO, "%s: done\n", __func__); |
| 2266 | return 1; /* handled */ |
| 2267 | } |
| 2268 | ata_port_printk(ap, KERN_INFO, "%s: waiting\n", __func__); |
| 2269 | return 1; /* handled */ |
| 2270 | } |
| 2271 | |
| 2272 | static int mv_handle_fbs_non_ncq_dev_err(struct ata_port *ap) |
| 2273 | { |
| 2274 | /* |
| 2275 | * Possible future enhancement: |
| 2276 | * |
| 2277 | * FBS+non-NCQ operation is not yet implemented. |
| 2278 | * See related notes in mv_edma_cfg(). |
| 2279 | * |
| 2280 | * Device error during FBS+non-NCQ operation: |
| 2281 | * |
| 2282 | * We need to snapshot the shadow registers for each failed command. |
| 2283 | * Follow recovery sequence from 6042/7042 datasheet (7.3.15.4.2.3). |
| 2284 | */ |
| 2285 | return 0; /* not handled */ |
| 2286 | } |
| 2287 | |
| 2288 | static int mv_handle_dev_err(struct ata_port *ap, u32 edma_err_cause) |
| 2289 | { |
| 2290 | struct mv_port_priv *pp = ap->private_data; |
| 2291 | |
| 2292 | if (!(pp->pp_flags & MV_PP_FLAG_EDMA_EN)) |
| 2293 | return 0; /* EDMA was not active: not handled */ |
| 2294 | if (!(pp->pp_flags & MV_PP_FLAG_FBS_EN)) |
| 2295 | return 0; /* FBS was not active: not handled */ |
| 2296 | |
| 2297 | if (!(edma_err_cause & EDMA_ERR_DEV)) |
| 2298 | return 0; /* non DEV error: not handled */ |
| 2299 | edma_err_cause &= ~EDMA_ERR_IRQ_TRANSIENT; |
| 2300 | if (edma_err_cause & ~(EDMA_ERR_DEV | EDMA_ERR_SELF_DIS)) |
| 2301 | return 0; /* other problems: not handled */ |
| 2302 | |
| 2303 | if (pp->pp_flags & MV_PP_FLAG_NCQ_EN) { |
| 2304 | /* |
| 2305 | * EDMA should NOT have self-disabled for this case. |
| 2306 | * If it did, then something is wrong elsewhere, |
| 2307 | * and we cannot handle it here. |
| 2308 | */ |
| 2309 | if (edma_err_cause & EDMA_ERR_SELF_DIS) { |
| 2310 | ata_port_printk(ap, KERN_WARNING, |
| 2311 | "%s: err_cause=0x%x pp_flags=0x%x\n", |
| 2312 | __func__, edma_err_cause, pp->pp_flags); |
| 2313 | return 0; /* not handled */ |
| 2314 | } |
| 2315 | return mv_handle_fbs_ncq_dev_err(ap); |
| 2316 | } else { |
| 2317 | /* |
| 2318 | * EDMA should have self-disabled for this case. |
| 2319 | * If it did not, then something is wrong elsewhere, |
| 2320 | * and we cannot handle it here. |
| 2321 | */ |
| 2322 | if (!(edma_err_cause & EDMA_ERR_SELF_DIS)) { |
| 2323 | ata_port_printk(ap, KERN_WARNING, |
| 2324 | "%s: err_cause=0x%x pp_flags=0x%x\n", |
| 2325 | __func__, edma_err_cause, pp->pp_flags); |
| 2326 | return 0; /* not handled */ |
| 2327 | } |
| 2328 | return mv_handle_fbs_non_ncq_dev_err(ap); |
| 2329 | } |
| 2330 | return 0; /* not handled */ |
| 2331 | } |
| 2332 | |
Mark Lord | a901032 | 2008-05-02 02:14:02 -0400 | [diff] [blame] | 2333 | static void mv_unexpected_intr(struct ata_port *ap, int edma_was_enabled) |
Mark Lord | 8f767f8 | 2008-04-19 14:53:07 -0400 | [diff] [blame] | 2334 | { |
Mark Lord | 8f767f8 | 2008-04-19 14:53:07 -0400 | [diff] [blame] | 2335 | struct ata_eh_info *ehi = &ap->link.eh_info; |
Mark Lord | a901032 | 2008-05-02 02:14:02 -0400 | [diff] [blame] | 2336 | char *when = "idle"; |
Mark Lord | 8f767f8 | 2008-04-19 14:53:07 -0400 | [diff] [blame] | 2337 | |
Mark Lord | 8f767f8 | 2008-04-19 14:53:07 -0400 | [diff] [blame] | 2338 | ata_ehi_clear_desc(ehi); |
Mark Lord | a901032 | 2008-05-02 02:14:02 -0400 | [diff] [blame] | 2339 | if (!ap || (ap->flags & ATA_FLAG_DISABLED)) { |
| 2340 | when = "disabled"; |
| 2341 | } else if (edma_was_enabled) { |
| 2342 | when = "EDMA enabled"; |
Mark Lord | 8f767f8 | 2008-04-19 14:53:07 -0400 | [diff] [blame] | 2343 | } else { |
| 2344 | struct ata_queued_cmd *qc = ata_qc_from_tag(ap, ap->link.active_tag); |
| 2345 | if (qc && (qc->tf.flags & ATA_TFLAG_POLLING)) |
Mark Lord | a901032 | 2008-05-02 02:14:02 -0400 | [diff] [blame] | 2346 | when = "polling"; |
Mark Lord | 8f767f8 | 2008-04-19 14:53:07 -0400 | [diff] [blame] | 2347 | } |
Mark Lord | a901032 | 2008-05-02 02:14:02 -0400 | [diff] [blame] | 2348 | ata_ehi_push_desc(ehi, "unexpected device interrupt while %s", when); |
Mark Lord | 8f767f8 | 2008-04-19 14:53:07 -0400 | [diff] [blame] | 2349 | ehi->err_mask |= AC_ERR_OTHER; |
| 2350 | ehi->action |= ATA_EH_RESET; |
| 2351 | ata_port_freeze(ap); |
| 2352 | } |
| 2353 | |
Brett Russ | 05b308e | 2005-10-05 17:08:53 -0400 | [diff] [blame] | 2354 | /** |
Brett Russ | 05b308e | 2005-10-05 17:08:53 -0400 | [diff] [blame] | 2355 | * mv_err_intr - Handle error interrupts on the port |
| 2356 | * @ap: ATA channel to manipulate |
| 2357 | * |
Mark Lord | 8d07379 | 2008-04-19 15:07:49 -0400 | [diff] [blame] | 2358 | * Most cases require a full reset of the chip's state machine, |
| 2359 | * which also performs a COMRESET. |
| 2360 | * Also, if the port disabled DMA, update our cached copy to match. |
Brett Russ | 05b308e | 2005-10-05 17:08:53 -0400 | [diff] [blame] | 2361 | * |
| 2362 | * LOCKING: |
| 2363 | * Inherited from caller. |
| 2364 | */ |
Mark Lord | 37b9046 | 2008-05-02 02:12:34 -0400 | [diff] [blame] | 2365 | static void mv_err_intr(struct ata_port *ap) |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 2366 | { |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 2367 | void __iomem *port_mmio = mv_ap_base(ap); |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 2368 | u32 edma_err_cause, eh_freeze_mask, serr = 0; |
Mark Lord | e400607 | 2008-05-14 09:19:30 -0400 | [diff] [blame] | 2369 | u32 fis_cause = 0; |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 2370 | struct mv_port_priv *pp = ap->private_data; |
| 2371 | struct mv_host_priv *hpriv = ap->host->private_data; |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 2372 | unsigned int action = 0, err_mask = 0; |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 2373 | struct ata_eh_info *ehi = &ap->link.eh_info; |
Mark Lord | 37b9046 | 2008-05-02 02:12:34 -0400 | [diff] [blame] | 2374 | struct ata_queued_cmd *qc; |
| 2375 | int abort = 0; |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 2376 | |
Mark Lord | 8d07379 | 2008-04-19 15:07:49 -0400 | [diff] [blame] | 2377 | /* |
Mark Lord | 37b9046 | 2008-05-02 02:12:34 -0400 | [diff] [blame] | 2378 | * Read and clear the SError and err_cause bits. |
Mark Lord | e400607 | 2008-05-14 09:19:30 -0400 | [diff] [blame] | 2379 | * For GenIIe, if EDMA_ERR_TRANS_IRQ_7 is set, we also must read/clear |
| 2380 | * the FIS_IRQ_CAUSE register before clearing edma_err_cause. |
Mark Lord | 8d07379 | 2008-04-19 15:07:49 -0400 | [diff] [blame] | 2381 | */ |
Mark Lord | 37b9046 | 2008-05-02 02:12:34 -0400 | [diff] [blame] | 2382 | sata_scr_read(&ap->link, SCR_ERROR, &serr); |
| 2383 | sata_scr_write_flush(&ap->link, SCR_ERROR, serr); |
| 2384 | |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 2385 | edma_err_cause = readl(port_mmio + EDMA_ERR_IRQ_CAUSE_OFS); |
Mark Lord | e400607 | 2008-05-14 09:19:30 -0400 | [diff] [blame] | 2386 | if (IS_GEN_IIE(hpriv) && (edma_err_cause & EDMA_ERR_TRANS_IRQ_7)) { |
| 2387 | fis_cause = readl(port_mmio + SATA_FIS_IRQ_CAUSE_OFS); |
| 2388 | writelfl(~fis_cause, port_mmio + SATA_FIS_IRQ_CAUSE_OFS); |
| 2389 | } |
Mark Lord | 8d07379 | 2008-04-19 15:07:49 -0400 | [diff] [blame] | 2390 | writelfl(~edma_err_cause, port_mmio + EDMA_ERR_IRQ_CAUSE_OFS); |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 2391 | |
Mark Lord | 4c299ca | 2008-05-02 02:16:20 -0400 | [diff] [blame] | 2392 | if (edma_err_cause & EDMA_ERR_DEV) { |
| 2393 | /* |
| 2394 | * Device errors during FIS-based switching operation |
| 2395 | * require special handling. |
| 2396 | */ |
| 2397 | if (mv_handle_dev_err(ap, edma_err_cause)) |
| 2398 | return; |
| 2399 | } |
| 2400 | |
Mark Lord | 37b9046 | 2008-05-02 02:12:34 -0400 | [diff] [blame] | 2401 | qc = mv_get_active_qc(ap); |
| 2402 | ata_ehi_clear_desc(ehi); |
| 2403 | ata_ehi_push_desc(ehi, "edma_err_cause=%08x pp_flags=%08x", |
| 2404 | edma_err_cause, pp->pp_flags); |
Mark Lord | e400607 | 2008-05-14 09:19:30 -0400 | [diff] [blame] | 2405 | |
Mark Lord | c443c50 | 2008-05-14 09:24:39 -0400 | [diff] [blame] | 2406 | if (IS_GEN_IIE(hpriv) && (edma_err_cause & EDMA_ERR_TRANS_IRQ_7)) { |
Mark Lord | e400607 | 2008-05-14 09:19:30 -0400 | [diff] [blame] | 2407 | ata_ehi_push_desc(ehi, "fis_cause=%08x", fis_cause); |
Mark Lord | c443c50 | 2008-05-14 09:24:39 -0400 | [diff] [blame] | 2408 | if (fis_cause & SATA_FIS_IRQ_AN) { |
| 2409 | u32 ec = edma_err_cause & |
| 2410 | ~(EDMA_ERR_TRANS_IRQ_7 | EDMA_ERR_IRQ_TRANSIENT); |
| 2411 | sata_async_notification(ap); |
| 2412 | if (!ec) |
| 2413 | return; /* Just an AN; no need for the nukes */ |
| 2414 | ata_ehi_push_desc(ehi, "SDB notify"); |
| 2415 | } |
| 2416 | } |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 2417 | /* |
Mark Lord | 352fab7 | 2008-04-19 14:43:42 -0400 | [diff] [blame] | 2418 | * All generations share these EDMA error cause bits: |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 2419 | */ |
Mark Lord | 37b9046 | 2008-05-02 02:12:34 -0400 | [diff] [blame] | 2420 | if (edma_err_cause & EDMA_ERR_DEV) { |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 2421 | err_mask |= AC_ERR_DEV; |
Mark Lord | 37b9046 | 2008-05-02 02:12:34 -0400 | [diff] [blame] | 2422 | action |= ATA_EH_RESET; |
| 2423 | ata_ehi_push_desc(ehi, "dev error"); |
| 2424 | } |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 2425 | if (edma_err_cause & (EDMA_ERR_D_PAR | EDMA_ERR_PRD_PAR | |
Jeff Garzik | 6c1153e | 2007-07-13 15:20:15 -0400 | [diff] [blame] | 2426 | EDMA_ERR_CRQB_PAR | EDMA_ERR_CRPB_PAR | |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 2427 | EDMA_ERR_INTRL_PAR)) { |
| 2428 | err_mask |= AC_ERR_ATA_BUS; |
Tejun Heo | cf48062 | 2008-01-24 00:05:14 +0900 | [diff] [blame] | 2429 | action |= ATA_EH_RESET; |
Tejun Heo | b64bbc3 | 2007-07-16 14:29:39 +0900 | [diff] [blame] | 2430 | ata_ehi_push_desc(ehi, "parity error"); |
Brett Russ | afb0edd | 2005-10-05 17:08:42 -0400 | [diff] [blame] | 2431 | } |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 2432 | if (edma_err_cause & (EDMA_ERR_DEV_DCON | EDMA_ERR_DEV_CON)) { |
| 2433 | ata_ehi_hotplugged(ehi); |
| 2434 | ata_ehi_push_desc(ehi, edma_err_cause & EDMA_ERR_DEV_DCON ? |
Tejun Heo | b64bbc3 | 2007-07-16 14:29:39 +0900 | [diff] [blame] | 2435 | "dev disconnect" : "dev connect"); |
Tejun Heo | cf48062 | 2008-01-24 00:05:14 +0900 | [diff] [blame] | 2436 | action |= ATA_EH_RESET; |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 2437 | } |
| 2438 | |
Mark Lord | 352fab7 | 2008-04-19 14:43:42 -0400 | [diff] [blame] | 2439 | /* |
| 2440 | * Gen-I has a different SELF_DIS bit, |
| 2441 | * different FREEZE bits, and no SERR bit: |
| 2442 | */ |
Jeff Garzik | ee9ccdf | 2007-07-12 15:51:22 -0400 | [diff] [blame] | 2443 | if (IS_GEN_I(hpriv)) { |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 2444 | eh_freeze_mask = EDMA_EH_FREEZE_5; |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 2445 | if (edma_err_cause & EDMA_ERR_SELF_DIS_5) { |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 2446 | pp->pp_flags &= ~MV_PP_FLAG_EDMA_EN; |
Tejun Heo | b64bbc3 | 2007-07-16 14:29:39 +0900 | [diff] [blame] | 2447 | ata_ehi_push_desc(ehi, "EDMA self-disable"); |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 2448 | } |
| 2449 | } else { |
| 2450 | eh_freeze_mask = EDMA_EH_FREEZE; |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 2451 | if (edma_err_cause & EDMA_ERR_SELF_DIS) { |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 2452 | pp->pp_flags &= ~MV_PP_FLAG_EDMA_EN; |
Tejun Heo | b64bbc3 | 2007-07-16 14:29:39 +0900 | [diff] [blame] | 2453 | ata_ehi_push_desc(ehi, "EDMA self-disable"); |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 2454 | } |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 2455 | if (edma_err_cause & EDMA_ERR_SERR) { |
Mark Lord | 8d07379 | 2008-04-19 15:07:49 -0400 | [diff] [blame] | 2456 | ata_ehi_push_desc(ehi, "SError=%08x", serr); |
| 2457 | err_mask |= AC_ERR_ATA_BUS; |
Tejun Heo | cf48062 | 2008-01-24 00:05:14 +0900 | [diff] [blame] | 2458 | action |= ATA_EH_RESET; |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 2459 | } |
| 2460 | } |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 2461 | |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 2462 | if (!err_mask) { |
| 2463 | err_mask = AC_ERR_OTHER; |
Tejun Heo | cf48062 | 2008-01-24 00:05:14 +0900 | [diff] [blame] | 2464 | action |= ATA_EH_RESET; |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 2465 | } |
| 2466 | |
| 2467 | ehi->serror |= serr; |
| 2468 | ehi->action |= action; |
| 2469 | |
| 2470 | if (qc) |
| 2471 | qc->err_mask |= err_mask; |
| 2472 | else |
| 2473 | ehi->err_mask |= err_mask; |
| 2474 | |
Mark Lord | 37b9046 | 2008-05-02 02:12:34 -0400 | [diff] [blame] | 2475 | if (err_mask == AC_ERR_DEV) { |
| 2476 | /* |
| 2477 | * Cannot do ata_port_freeze() here, |
| 2478 | * because it would kill PIO access, |
| 2479 | * which is needed for further diagnosis. |
| 2480 | */ |
| 2481 | mv_eh_freeze(ap); |
| 2482 | abort = 1; |
| 2483 | } else if (edma_err_cause & eh_freeze_mask) { |
| 2484 | /* |
| 2485 | * Note to self: ata_port_freeze() calls ata_port_abort() |
| 2486 | */ |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 2487 | ata_port_freeze(ap); |
Mark Lord | 37b9046 | 2008-05-02 02:12:34 -0400 | [diff] [blame] | 2488 | } else { |
| 2489 | abort = 1; |
| 2490 | } |
| 2491 | |
| 2492 | if (abort) { |
| 2493 | if (qc) |
| 2494 | ata_link_abort(qc->dev->link); |
| 2495 | else |
| 2496 | ata_port_abort(ap); |
| 2497 | } |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 2498 | } |
| 2499 | |
Mark Lord | fcfb1f7 | 2008-04-19 15:06:40 -0400 | [diff] [blame] | 2500 | static void mv_process_crpb_response(struct ata_port *ap, |
| 2501 | struct mv_crpb *response, unsigned int tag, int ncq_enabled) |
| 2502 | { |
| 2503 | struct ata_queued_cmd *qc = ata_qc_from_tag(ap, tag); |
| 2504 | |
| 2505 | if (qc) { |
| 2506 | u8 ata_status; |
| 2507 | u16 edma_status = le16_to_cpu(response->flags); |
| 2508 | /* |
| 2509 | * edma_status from a response queue entry: |
| 2510 | * LSB is from EDMA_ERR_IRQ_CAUSE_OFS (non-NCQ only). |
| 2511 | * MSB is saved ATA status from command completion. |
| 2512 | */ |
| 2513 | if (!ncq_enabled) { |
| 2514 | u8 err_cause = edma_status & 0xff & ~EDMA_ERR_DEV; |
| 2515 | if (err_cause) { |
| 2516 | /* |
| 2517 | * Error will be seen/handled by mv_err_intr(). |
| 2518 | * So do nothing at all here. |
| 2519 | */ |
| 2520 | return; |
| 2521 | } |
| 2522 | } |
| 2523 | ata_status = edma_status >> CRPB_FLAG_STATUS_SHIFT; |
Mark Lord | 37b9046 | 2008-05-02 02:12:34 -0400 | [diff] [blame] | 2524 | if (!ac_err_mask(ata_status)) |
| 2525 | ata_qc_complete(qc); |
| 2526 | /* else: leave it for mv_err_intr() */ |
Mark Lord | fcfb1f7 | 2008-04-19 15:06:40 -0400 | [diff] [blame] | 2527 | } else { |
| 2528 | ata_port_printk(ap, KERN_ERR, "%s: no qc for tag=%d\n", |
| 2529 | __func__, tag); |
| 2530 | } |
| 2531 | } |
| 2532 | |
| 2533 | static void mv_process_crpb_entries(struct ata_port *ap, struct mv_port_priv *pp) |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 2534 | { |
| 2535 | void __iomem *port_mmio = mv_ap_base(ap); |
| 2536 | struct mv_host_priv *hpriv = ap->host->private_data; |
Mark Lord | fcfb1f7 | 2008-04-19 15:06:40 -0400 | [diff] [blame] | 2537 | u32 in_index; |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 2538 | bool work_done = false; |
Mark Lord | fcfb1f7 | 2008-04-19 15:06:40 -0400 | [diff] [blame] | 2539 | int ncq_enabled = (pp->pp_flags & MV_PP_FLAG_NCQ_EN); |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 2540 | |
Mark Lord | fcfb1f7 | 2008-04-19 15:06:40 -0400 | [diff] [blame] | 2541 | /* Get the hardware queue position index */ |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 2542 | in_index = (readl(port_mmio + EDMA_RSP_Q_IN_PTR_OFS) |
| 2543 | >> EDMA_RSP_Q_PTR_SHIFT) & MV_MAX_Q_DEPTH_MASK; |
| 2544 | |
Mark Lord | fcfb1f7 | 2008-04-19 15:06:40 -0400 | [diff] [blame] | 2545 | /* Process new responses from since the last time we looked */ |
| 2546 | while (in_index != pp->resp_idx) { |
Jeff Garzik | 6c1153e | 2007-07-13 15:20:15 -0400 | [diff] [blame] | 2547 | unsigned int tag; |
Mark Lord | fcfb1f7 | 2008-04-19 15:06:40 -0400 | [diff] [blame] | 2548 | struct mv_crpb *response = &pp->crpb[pp->resp_idx]; |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 2549 | |
Mark Lord | fcfb1f7 | 2008-04-19 15:06:40 -0400 | [diff] [blame] | 2550 | pp->resp_idx = (pp->resp_idx + 1) & MV_MAX_Q_DEPTH_MASK; |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 2551 | |
Mark Lord | fcfb1f7 | 2008-04-19 15:06:40 -0400 | [diff] [blame] | 2552 | if (IS_GEN_I(hpriv)) { |
| 2553 | /* 50xx: no NCQ, only one command active at a time */ |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 2554 | tag = ap->link.active_tag; |
Mark Lord | fcfb1f7 | 2008-04-19 15:06:40 -0400 | [diff] [blame] | 2555 | } else { |
| 2556 | /* Gen II/IIE: get command tag from CRPB entry */ |
| 2557 | tag = le16_to_cpu(response->id) & 0x1f; |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 2558 | } |
Mark Lord | fcfb1f7 | 2008-04-19 15:06:40 -0400 | [diff] [blame] | 2559 | mv_process_crpb_response(ap, response, tag, ncq_enabled); |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 2560 | work_done = true; |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 2561 | } |
| 2562 | |
Mark Lord | 352fab7 | 2008-04-19 14:43:42 -0400 | [diff] [blame] | 2563 | /* Update the software queue position index in hardware */ |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 2564 | if (work_done) |
| 2565 | writelfl((pp->crpb_dma & EDMA_RSP_Q_BASE_LO_MASK) | |
Mark Lord | fcfb1f7 | 2008-04-19 15:06:40 -0400 | [diff] [blame] | 2566 | (pp->resp_idx << EDMA_RSP_Q_PTR_SHIFT), |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 2567 | port_mmio + EDMA_RSP_Q_OUT_PTR_OFS); |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 2568 | } |
| 2569 | |
Mark Lord | a901032 | 2008-05-02 02:14:02 -0400 | [diff] [blame] | 2570 | static void mv_port_intr(struct ata_port *ap, u32 port_cause) |
| 2571 | { |
| 2572 | struct mv_port_priv *pp; |
| 2573 | int edma_was_enabled; |
| 2574 | |
| 2575 | if (!ap || (ap->flags & ATA_FLAG_DISABLED)) { |
| 2576 | mv_unexpected_intr(ap, 0); |
| 2577 | return; |
| 2578 | } |
| 2579 | /* |
| 2580 | * Grab a snapshot of the EDMA_EN flag setting, |
| 2581 | * so that we have a consistent view for this port, |
| 2582 | * even if something we call of our routines changes it. |
| 2583 | */ |
| 2584 | pp = ap->private_data; |
| 2585 | edma_was_enabled = (pp->pp_flags & MV_PP_FLAG_EDMA_EN); |
| 2586 | /* |
| 2587 | * Process completed CRPB response(s) before other events. |
| 2588 | */ |
| 2589 | if (edma_was_enabled && (port_cause & DONE_IRQ)) { |
| 2590 | mv_process_crpb_entries(ap, pp); |
Mark Lord | 4c299ca | 2008-05-02 02:16:20 -0400 | [diff] [blame] | 2591 | if (pp->pp_flags & MV_PP_FLAG_DELAYED_EH) |
| 2592 | mv_handle_fbs_ncq_dev_err(ap); |
Mark Lord | a901032 | 2008-05-02 02:14:02 -0400 | [diff] [blame] | 2593 | } |
| 2594 | /* |
| 2595 | * Handle chip-reported errors, or continue on to handle PIO. |
| 2596 | */ |
| 2597 | if (unlikely(port_cause & ERR_IRQ)) { |
| 2598 | mv_err_intr(ap); |
| 2599 | } else if (!edma_was_enabled) { |
| 2600 | struct ata_queued_cmd *qc = mv_get_active_qc(ap); |
| 2601 | if (qc) |
| 2602 | ata_sff_host_intr(ap, qc); |
| 2603 | else |
| 2604 | mv_unexpected_intr(ap, edma_was_enabled); |
| 2605 | } |
| 2606 | } |
| 2607 | |
Brett Russ | 05b308e | 2005-10-05 17:08:53 -0400 | [diff] [blame] | 2608 | /** |
| 2609 | * mv_host_intr - Handle all interrupts on the given host controller |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 2610 | * @host: host specific structure |
Mark Lord | 7368f91 | 2008-04-25 11:24:24 -0400 | [diff] [blame] | 2611 | * @main_irq_cause: Main interrupt cause register for the chip. |
Brett Russ | 05b308e | 2005-10-05 17:08:53 -0400 | [diff] [blame] | 2612 | * |
| 2613 | * LOCKING: |
| 2614 | * Inherited from caller. |
| 2615 | */ |
Mark Lord | 7368f91 | 2008-04-25 11:24:24 -0400 | [diff] [blame] | 2616 | static int mv_host_intr(struct ata_host *host, u32 main_irq_cause) |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 2617 | { |
Saeed Bishara | f351b2d | 2008-02-01 18:08:03 -0500 | [diff] [blame] | 2618 | struct mv_host_priv *hpriv = host->private_data; |
Mark Lord | eabd5eb | 2008-05-02 02:13:27 -0400 | [diff] [blame] | 2619 | void __iomem *mmio = hpriv->base, *hc_mmio; |
Mark Lord | a3718c1 | 2008-04-19 15:07:18 -0400 | [diff] [blame] | 2620 | unsigned int handled = 0, port; |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 2621 | |
Mark Lord | 2b748a0 | 2009-03-10 22:01:17 -0400 | [diff] [blame^] | 2622 | /* If asserted, clear the "all ports" IRQ coalescing bit */ |
| 2623 | if (main_irq_cause & ALL_PORTS_COAL_DONE) |
| 2624 | writel(~ALL_PORTS_COAL_IRQ, mmio + MV_IRQ_COAL_CAUSE); |
| 2625 | |
Mark Lord | a3718c1 | 2008-04-19 15:07:18 -0400 | [diff] [blame] | 2626 | for (port = 0; port < hpriv->n_ports; port++) { |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 2627 | struct ata_port *ap = host->ports[port]; |
Mark Lord | eabd5eb | 2008-05-02 02:13:27 -0400 | [diff] [blame] | 2628 | unsigned int p, shift, hardport, port_cause; |
| 2629 | |
Mark Lord | a3718c1 | 2008-04-19 15:07:18 -0400 | [diff] [blame] | 2630 | MV_PORT_TO_SHIFT_AND_HARDPORT(port, shift, hardport); |
Mark Lord | a3718c1 | 2008-04-19 15:07:18 -0400 | [diff] [blame] | 2631 | /* |
Mark Lord | eabd5eb | 2008-05-02 02:13:27 -0400 | [diff] [blame] | 2632 | * Each hc within the host has its own hc_irq_cause register, |
| 2633 | * where the interrupting ports bits get ack'd. |
Mark Lord | a3718c1 | 2008-04-19 15:07:18 -0400 | [diff] [blame] | 2634 | */ |
Mark Lord | eabd5eb | 2008-05-02 02:13:27 -0400 | [diff] [blame] | 2635 | if (hardport == 0) { /* first port on this hc ? */ |
| 2636 | u32 hc_cause = (main_irq_cause >> shift) & HC0_IRQ_PEND; |
| 2637 | u32 port_mask, ack_irqs; |
| 2638 | /* |
| 2639 | * Skip this entire hc if nothing pending for any ports |
| 2640 | */ |
| 2641 | if (!hc_cause) { |
| 2642 | port += MV_PORTS_PER_HC - 1; |
| 2643 | continue; |
| 2644 | } |
| 2645 | /* |
| 2646 | * We don't need/want to read the hc_irq_cause register, |
| 2647 | * because doing so hurts performance, and |
| 2648 | * main_irq_cause already gives us everything we need. |
| 2649 | * |
| 2650 | * But we do have to *write* to the hc_irq_cause to ack |
| 2651 | * the ports that we are handling this time through. |
| 2652 | * |
| 2653 | * This requires that we create a bitmap for those |
| 2654 | * ports which interrupted us, and use that bitmap |
| 2655 | * to ack (only) those ports via hc_irq_cause. |
| 2656 | */ |
| 2657 | ack_irqs = 0; |
Mark Lord | 2b748a0 | 2009-03-10 22:01:17 -0400 | [diff] [blame^] | 2658 | if (hc_cause & PORTS_0_3_COAL_DONE) |
| 2659 | ack_irqs = HC_COAL_IRQ; |
Mark Lord | eabd5eb | 2008-05-02 02:13:27 -0400 | [diff] [blame] | 2660 | for (p = 0; p < MV_PORTS_PER_HC; ++p) { |
| 2661 | if ((port + p) >= hpriv->n_ports) |
| 2662 | break; |
| 2663 | port_mask = (DONE_IRQ | ERR_IRQ) << (p * 2); |
| 2664 | if (hc_cause & port_mask) |
| 2665 | ack_irqs |= (DMA_IRQ | DEV_IRQ) << p; |
| 2666 | } |
Mark Lord | a3718c1 | 2008-04-19 15:07:18 -0400 | [diff] [blame] | 2667 | hc_mmio = mv_hc_base_from_port(mmio, port); |
Mark Lord | eabd5eb | 2008-05-02 02:13:27 -0400 | [diff] [blame] | 2668 | writelfl(~ack_irqs, hc_mmio + HC_IRQ_CAUSE_OFS); |
Mark Lord | a3718c1 | 2008-04-19 15:07:18 -0400 | [diff] [blame] | 2669 | handled = 1; |
| 2670 | } |
Mark Lord | a901032 | 2008-05-02 02:14:02 -0400 | [diff] [blame] | 2671 | /* |
| 2672 | * Handle interrupts signalled for this port: |
| 2673 | */ |
Mark Lord | eabd5eb | 2008-05-02 02:13:27 -0400 | [diff] [blame] | 2674 | port_cause = (main_irq_cause >> shift) & (DONE_IRQ | ERR_IRQ); |
Mark Lord | a901032 | 2008-05-02 02:14:02 -0400 | [diff] [blame] | 2675 | if (port_cause) |
| 2676 | mv_port_intr(ap, port_cause); |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 2677 | } |
Mark Lord | a3718c1 | 2008-04-19 15:07:18 -0400 | [diff] [blame] | 2678 | return handled; |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 2679 | } |
| 2680 | |
Mark Lord | a3718c1 | 2008-04-19 15:07:18 -0400 | [diff] [blame] | 2681 | static int mv_pci_error(struct ata_host *host, void __iomem *mmio) |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 2682 | { |
Mark Lord | 02a121d | 2007-12-01 13:07:22 -0500 | [diff] [blame] | 2683 | struct mv_host_priv *hpriv = host->private_data; |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 2684 | struct ata_port *ap; |
| 2685 | struct ata_queued_cmd *qc; |
| 2686 | struct ata_eh_info *ehi; |
| 2687 | unsigned int i, err_mask, printed = 0; |
| 2688 | u32 err_cause; |
| 2689 | |
Mark Lord | 02a121d | 2007-12-01 13:07:22 -0500 | [diff] [blame] | 2690 | err_cause = readl(mmio + hpriv->irq_cause_ofs); |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 2691 | |
| 2692 | dev_printk(KERN_ERR, host->dev, "PCI ERROR; PCI IRQ cause=0x%08x\n", |
| 2693 | err_cause); |
| 2694 | |
| 2695 | DPRINTK("All regs @ PCI error\n"); |
| 2696 | mv_dump_all_regs(mmio, -1, to_pci_dev(host->dev)); |
| 2697 | |
Mark Lord | 02a121d | 2007-12-01 13:07:22 -0500 | [diff] [blame] | 2698 | writelfl(0, mmio + hpriv->irq_cause_ofs); |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 2699 | |
| 2700 | for (i = 0; i < host->n_ports; i++) { |
| 2701 | ap = host->ports[i]; |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 2702 | if (!ata_link_offline(&ap->link)) { |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 2703 | ehi = &ap->link.eh_info; |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 2704 | ata_ehi_clear_desc(ehi); |
| 2705 | if (!printed++) |
| 2706 | ata_ehi_push_desc(ehi, |
| 2707 | "PCI err cause 0x%08x", err_cause); |
| 2708 | err_mask = AC_ERR_HOST_BUS; |
Tejun Heo | cf48062 | 2008-01-24 00:05:14 +0900 | [diff] [blame] | 2709 | ehi->action = ATA_EH_RESET; |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 2710 | qc = ata_qc_from_tag(ap, ap->link.active_tag); |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 2711 | if (qc) |
| 2712 | qc->err_mask |= err_mask; |
| 2713 | else |
| 2714 | ehi->err_mask |= err_mask; |
| 2715 | |
| 2716 | ata_port_freeze(ap); |
| 2717 | } |
| 2718 | } |
Mark Lord | a3718c1 | 2008-04-19 15:07:18 -0400 | [diff] [blame] | 2719 | return 1; /* handled */ |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 2720 | } |
| 2721 | |
Brett Russ | 05b308e | 2005-10-05 17:08:53 -0400 | [diff] [blame] | 2722 | /** |
Jeff Garzik | c5d3e45 | 2007-07-11 18:30:50 -0400 | [diff] [blame] | 2723 | * mv_interrupt - Main interrupt event handler |
Brett Russ | 05b308e | 2005-10-05 17:08:53 -0400 | [diff] [blame] | 2724 | * @irq: unused |
| 2725 | * @dev_instance: private data; in this case the host structure |
Brett Russ | 05b308e | 2005-10-05 17:08:53 -0400 | [diff] [blame] | 2726 | * |
| 2727 | * Read the read only register to determine if any host |
| 2728 | * controllers have pending interrupts. If so, call lower level |
| 2729 | * routine to handle. Also check for PCI errors which are only |
| 2730 | * reported here. |
| 2731 | * |
Jeff Garzik | 8b26024 | 2005-11-12 12:32:50 -0500 | [diff] [blame] | 2732 | * LOCKING: |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 2733 | * This routine holds the host lock while processing pending |
Brett Russ | 05b308e | 2005-10-05 17:08:53 -0400 | [diff] [blame] | 2734 | * interrupts. |
| 2735 | */ |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 2736 | static irqreturn_t mv_interrupt(int irq, void *dev_instance) |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 2737 | { |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 2738 | struct ata_host *host = dev_instance; |
Saeed Bishara | f351b2d | 2008-02-01 18:08:03 -0500 | [diff] [blame] | 2739 | struct mv_host_priv *hpriv = host->private_data; |
Mark Lord | a3718c1 | 2008-04-19 15:07:18 -0400 | [diff] [blame] | 2740 | unsigned int handled = 0; |
Mark Lord | 6d3c30e | 2009-01-21 10:31:29 -0500 | [diff] [blame] | 2741 | int using_msi = hpriv->hp_flags & MV_HP_FLAG_MSI; |
Mark Lord | 96e2c487 | 2008-05-17 13:38:00 -0400 | [diff] [blame] | 2742 | u32 main_irq_cause, pending_irqs; |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 2743 | |
Mark Lord | 646a4da | 2008-01-26 18:30:37 -0500 | [diff] [blame] | 2744 | spin_lock(&host->lock); |
Mark Lord | 6d3c30e | 2009-01-21 10:31:29 -0500 | [diff] [blame] | 2745 | |
| 2746 | /* for MSI: block new interrupts while in here */ |
| 2747 | if (using_msi) |
Mark Lord | 2b748a0 | 2009-03-10 22:01:17 -0400 | [diff] [blame^] | 2748 | mv_write_main_irq_mask(0, hpriv); |
Mark Lord | 6d3c30e | 2009-01-21 10:31:29 -0500 | [diff] [blame] | 2749 | |
Mark Lord | 7368f91 | 2008-04-25 11:24:24 -0400 | [diff] [blame] | 2750 | main_irq_cause = readl(hpriv->main_irq_cause_addr); |
Mark Lord | 96e2c487 | 2008-05-17 13:38:00 -0400 | [diff] [blame] | 2751 | pending_irqs = main_irq_cause & hpriv->main_irq_mask; |
Mark Lord | 352fab7 | 2008-04-19 14:43:42 -0400 | [diff] [blame] | 2752 | /* |
| 2753 | * Deal with cases where we either have nothing pending, or have read |
| 2754 | * a bogus register value which can indicate HW removal or PCI fault. |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 2755 | */ |
Mark Lord | a44253d | 2008-05-17 13:37:07 -0400 | [diff] [blame] | 2756 | if (pending_irqs && main_irq_cause != 0xffffffffU) { |
Mark Lord | 1f39847 | 2008-05-27 17:54:48 -0400 | [diff] [blame] | 2757 | if (unlikely((pending_irqs & PCI_ERR) && !IS_SOC(hpriv))) |
Mark Lord | a3718c1 | 2008-04-19 15:07:18 -0400 | [diff] [blame] | 2758 | handled = mv_pci_error(host, hpriv->base); |
| 2759 | else |
Mark Lord | a44253d | 2008-05-17 13:37:07 -0400 | [diff] [blame] | 2760 | handled = mv_host_intr(host, pending_irqs); |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 2761 | } |
Mark Lord | 6d3c30e | 2009-01-21 10:31:29 -0500 | [diff] [blame] | 2762 | |
| 2763 | /* for MSI: unmask; interrupt cause bits will retrigger now */ |
| 2764 | if (using_msi) |
Mark Lord | 2b748a0 | 2009-03-10 22:01:17 -0400 | [diff] [blame^] | 2765 | mv_write_main_irq_mask(hpriv->main_irq_mask, hpriv); |
Mark Lord | 6d3c30e | 2009-01-21 10:31:29 -0500 | [diff] [blame] | 2766 | |
Mark Lord | 9d51af7 | 2009-03-10 16:28:51 -0400 | [diff] [blame] | 2767 | spin_unlock(&host->lock); |
| 2768 | |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 2769 | return IRQ_RETVAL(handled); |
| 2770 | } |
| 2771 | |
Jeff Garzik | c9d3913 | 2005-11-13 17:47:51 -0500 | [diff] [blame] | 2772 | static unsigned int mv5_scr_offset(unsigned int sc_reg_in) |
| 2773 | { |
| 2774 | unsigned int ofs; |
| 2775 | |
| 2776 | switch (sc_reg_in) { |
| 2777 | case SCR_STATUS: |
| 2778 | case SCR_ERROR: |
| 2779 | case SCR_CONTROL: |
| 2780 | ofs = sc_reg_in * sizeof(u32); |
| 2781 | break; |
| 2782 | default: |
| 2783 | ofs = 0xffffffffU; |
| 2784 | break; |
| 2785 | } |
| 2786 | return ofs; |
| 2787 | } |
| 2788 | |
Tejun Heo | 82ef04f | 2008-07-31 17:02:40 +0900 | [diff] [blame] | 2789 | static int mv5_scr_read(struct ata_link *link, unsigned int sc_reg_in, u32 *val) |
Jeff Garzik | c9d3913 | 2005-11-13 17:47:51 -0500 | [diff] [blame] | 2790 | { |
Tejun Heo | 82ef04f | 2008-07-31 17:02:40 +0900 | [diff] [blame] | 2791 | struct mv_host_priv *hpriv = link->ap->host->private_data; |
Saeed Bishara | f351b2d | 2008-02-01 18:08:03 -0500 | [diff] [blame] | 2792 | void __iomem *mmio = hpriv->base; |
Tejun Heo | 82ef04f | 2008-07-31 17:02:40 +0900 | [diff] [blame] | 2793 | void __iomem *addr = mv5_phy_base(mmio, link->ap->port_no); |
Jeff Garzik | c9d3913 | 2005-11-13 17:47:51 -0500 | [diff] [blame] | 2794 | unsigned int ofs = mv5_scr_offset(sc_reg_in); |
| 2795 | |
Tejun Heo | da3dbb1 | 2007-07-16 14:29:40 +0900 | [diff] [blame] | 2796 | if (ofs != 0xffffffffU) { |
| 2797 | *val = readl(addr + ofs); |
| 2798 | return 0; |
| 2799 | } else |
| 2800 | return -EINVAL; |
Jeff Garzik | c9d3913 | 2005-11-13 17:47:51 -0500 | [diff] [blame] | 2801 | } |
| 2802 | |
Tejun Heo | 82ef04f | 2008-07-31 17:02:40 +0900 | [diff] [blame] | 2803 | static int mv5_scr_write(struct ata_link *link, unsigned int sc_reg_in, u32 val) |
Jeff Garzik | c9d3913 | 2005-11-13 17:47:51 -0500 | [diff] [blame] | 2804 | { |
Tejun Heo | 82ef04f | 2008-07-31 17:02:40 +0900 | [diff] [blame] | 2805 | struct mv_host_priv *hpriv = link->ap->host->private_data; |
Saeed Bishara | f351b2d | 2008-02-01 18:08:03 -0500 | [diff] [blame] | 2806 | void __iomem *mmio = hpriv->base; |
Tejun Heo | 82ef04f | 2008-07-31 17:02:40 +0900 | [diff] [blame] | 2807 | void __iomem *addr = mv5_phy_base(mmio, link->ap->port_no); |
Jeff Garzik | c9d3913 | 2005-11-13 17:47:51 -0500 | [diff] [blame] | 2808 | unsigned int ofs = mv5_scr_offset(sc_reg_in); |
| 2809 | |
Tejun Heo | da3dbb1 | 2007-07-16 14:29:40 +0900 | [diff] [blame] | 2810 | if (ofs != 0xffffffffU) { |
Tejun Heo | 0d5ff56 | 2007-02-01 15:06:36 +0900 | [diff] [blame] | 2811 | writelfl(val, addr + ofs); |
Tejun Heo | da3dbb1 | 2007-07-16 14:29:40 +0900 | [diff] [blame] | 2812 | return 0; |
| 2813 | } else |
| 2814 | return -EINVAL; |
Jeff Garzik | c9d3913 | 2005-11-13 17:47:51 -0500 | [diff] [blame] | 2815 | } |
| 2816 | |
Saeed Bishara | 7bb3c52 | 2008-01-30 11:50:45 -1100 | [diff] [blame] | 2817 | static void mv5_reset_bus(struct ata_host *host, void __iomem *mmio) |
Jeff Garzik | 522479f | 2005-11-12 22:14:02 -0500 | [diff] [blame] | 2818 | { |
Saeed Bishara | 7bb3c52 | 2008-01-30 11:50:45 -1100 | [diff] [blame] | 2819 | struct pci_dev *pdev = to_pci_dev(host->dev); |
Jeff Garzik | 522479f | 2005-11-12 22:14:02 -0500 | [diff] [blame] | 2820 | int early_5080; |
| 2821 | |
Auke Kok | 44c1013 | 2007-06-08 15:46:36 -0700 | [diff] [blame] | 2822 | early_5080 = (pdev->device == 0x5080) && (pdev->revision == 0); |
Jeff Garzik | 522479f | 2005-11-12 22:14:02 -0500 | [diff] [blame] | 2823 | |
| 2824 | if (!early_5080) { |
| 2825 | u32 tmp = readl(mmio + MV_PCI_EXP_ROM_BAR_CTL); |
| 2826 | tmp |= (1 << 0); |
| 2827 | writel(tmp, mmio + MV_PCI_EXP_ROM_BAR_CTL); |
| 2828 | } |
| 2829 | |
Saeed Bishara | 7bb3c52 | 2008-01-30 11:50:45 -1100 | [diff] [blame] | 2830 | mv_reset_pci_bus(host, mmio); |
Jeff Garzik | 522479f | 2005-11-12 22:14:02 -0500 | [diff] [blame] | 2831 | } |
| 2832 | |
| 2833 | static void mv5_reset_flash(struct mv_host_priv *hpriv, void __iomem *mmio) |
| 2834 | { |
Mark Lord | 8e7decd | 2008-05-02 02:07:51 -0400 | [diff] [blame] | 2835 | writel(0x0fcfffff, mmio + MV_FLASH_CTL_OFS); |
Jeff Garzik | 522479f | 2005-11-12 22:14:02 -0500 | [diff] [blame] | 2836 | } |
| 2837 | |
Jeff Garzik | 47c2b67 | 2005-11-12 21:13:17 -0500 | [diff] [blame] | 2838 | static void mv5_read_preamp(struct mv_host_priv *hpriv, int idx, |
Jeff Garzik | ba3fe8f | 2005-11-12 19:08:48 -0500 | [diff] [blame] | 2839 | void __iomem *mmio) |
| 2840 | { |
Jeff Garzik | c9d3913 | 2005-11-13 17:47:51 -0500 | [diff] [blame] | 2841 | void __iomem *phy_mmio = mv5_phy_base(mmio, idx); |
| 2842 | u32 tmp; |
| 2843 | |
| 2844 | tmp = readl(phy_mmio + MV5_PHY_MODE); |
| 2845 | |
| 2846 | hpriv->signal[idx].pre = tmp & 0x1800; /* bits 12:11 */ |
| 2847 | hpriv->signal[idx].amps = tmp & 0xe0; /* bits 7:5 */ |
Jeff Garzik | ba3fe8f | 2005-11-12 19:08:48 -0500 | [diff] [blame] | 2848 | } |
| 2849 | |
Jeff Garzik | 47c2b67 | 2005-11-12 21:13:17 -0500 | [diff] [blame] | 2850 | static void mv5_enable_leds(struct mv_host_priv *hpriv, void __iomem *mmio) |
Jeff Garzik | ba3fe8f | 2005-11-12 19:08:48 -0500 | [diff] [blame] | 2851 | { |
Jeff Garzik | 522479f | 2005-11-12 22:14:02 -0500 | [diff] [blame] | 2852 | u32 tmp; |
| 2853 | |
Mark Lord | 8e7decd | 2008-05-02 02:07:51 -0400 | [diff] [blame] | 2854 | writel(0, mmio + MV_GPIO_PORT_CTL_OFS); |
Jeff Garzik | 522479f | 2005-11-12 22:14:02 -0500 | [diff] [blame] | 2855 | |
| 2856 | /* FIXME: handle MV_HP_ERRATA_50XXB2 errata */ |
| 2857 | |
| 2858 | tmp = readl(mmio + MV_PCI_EXP_ROM_BAR_CTL); |
| 2859 | tmp |= ~(1 << 0); |
| 2860 | writel(tmp, mmio + MV_PCI_EXP_ROM_BAR_CTL); |
Jeff Garzik | ba3fe8f | 2005-11-12 19:08:48 -0500 | [diff] [blame] | 2861 | } |
| 2862 | |
Jeff Garzik | 2a47ce0 | 2005-11-12 23:05:14 -0500 | [diff] [blame] | 2863 | static void mv5_phy_errata(struct mv_host_priv *hpriv, void __iomem *mmio, |
| 2864 | unsigned int port) |
Jeff Garzik | bca1c4e | 2005-11-12 12:48:15 -0500 | [diff] [blame] | 2865 | { |
Jeff Garzik | c9d3913 | 2005-11-13 17:47:51 -0500 | [diff] [blame] | 2866 | void __iomem *phy_mmio = mv5_phy_base(mmio, port); |
| 2867 | const u32 mask = (1<<12) | (1<<11) | (1<<7) | (1<<6) | (1<<5); |
| 2868 | u32 tmp; |
| 2869 | int fix_apm_sq = (hpriv->hp_flags & MV_HP_ERRATA_50XXB0); |
| 2870 | |
| 2871 | if (fix_apm_sq) { |
Mark Lord | 8e7decd | 2008-05-02 02:07:51 -0400 | [diff] [blame] | 2872 | tmp = readl(phy_mmio + MV5_LTMODE_OFS); |
Jeff Garzik | c9d3913 | 2005-11-13 17:47:51 -0500 | [diff] [blame] | 2873 | tmp |= (1 << 19); |
Mark Lord | 8e7decd | 2008-05-02 02:07:51 -0400 | [diff] [blame] | 2874 | writel(tmp, phy_mmio + MV5_LTMODE_OFS); |
Jeff Garzik | c9d3913 | 2005-11-13 17:47:51 -0500 | [diff] [blame] | 2875 | |
Mark Lord | 8e7decd | 2008-05-02 02:07:51 -0400 | [diff] [blame] | 2876 | tmp = readl(phy_mmio + MV5_PHY_CTL_OFS); |
Jeff Garzik | c9d3913 | 2005-11-13 17:47:51 -0500 | [diff] [blame] | 2877 | tmp &= ~0x3; |
| 2878 | tmp |= 0x1; |
Mark Lord | 8e7decd | 2008-05-02 02:07:51 -0400 | [diff] [blame] | 2879 | writel(tmp, phy_mmio + MV5_PHY_CTL_OFS); |
Jeff Garzik | c9d3913 | 2005-11-13 17:47:51 -0500 | [diff] [blame] | 2880 | } |
| 2881 | |
| 2882 | tmp = readl(phy_mmio + MV5_PHY_MODE); |
| 2883 | tmp &= ~mask; |
| 2884 | tmp |= hpriv->signal[port].pre; |
| 2885 | tmp |= hpriv->signal[port].amps; |
| 2886 | writel(tmp, phy_mmio + MV5_PHY_MODE); |
Jeff Garzik | bca1c4e | 2005-11-12 12:48:15 -0500 | [diff] [blame] | 2887 | } |
| 2888 | |
Jeff Garzik | c9d3913 | 2005-11-13 17:47:51 -0500 | [diff] [blame] | 2889 | |
| 2890 | #undef ZERO |
| 2891 | #define ZERO(reg) writel(0, port_mmio + (reg)) |
| 2892 | static void mv5_reset_hc_port(struct mv_host_priv *hpriv, void __iomem *mmio, |
| 2893 | unsigned int port) |
Jeff Garzik | 47c2b67 | 2005-11-12 21:13:17 -0500 | [diff] [blame] | 2894 | { |
Jeff Garzik | c9d3913 | 2005-11-13 17:47:51 -0500 | [diff] [blame] | 2895 | void __iomem *port_mmio = mv_port_base(mmio, port); |
| 2896 | |
Mark Lord | e12bef5 | 2008-03-31 19:33:56 -0400 | [diff] [blame] | 2897 | mv_reset_channel(hpriv, mmio, port); |
Jeff Garzik | c9d3913 | 2005-11-13 17:47:51 -0500 | [diff] [blame] | 2898 | |
| 2899 | ZERO(0x028); /* command */ |
| 2900 | writel(0x11f, port_mmio + EDMA_CFG_OFS); |
| 2901 | ZERO(0x004); /* timer */ |
| 2902 | ZERO(0x008); /* irq err cause */ |
| 2903 | ZERO(0x00c); /* irq err mask */ |
| 2904 | ZERO(0x010); /* rq bah */ |
| 2905 | ZERO(0x014); /* rq inp */ |
| 2906 | ZERO(0x018); /* rq outp */ |
| 2907 | ZERO(0x01c); /* respq bah */ |
| 2908 | ZERO(0x024); /* respq outp */ |
| 2909 | ZERO(0x020); /* respq inp */ |
| 2910 | ZERO(0x02c); /* test control */ |
Mark Lord | 8e7decd | 2008-05-02 02:07:51 -0400 | [diff] [blame] | 2911 | writel(0xbc, port_mmio + EDMA_IORDY_TMOUT_OFS); |
Jeff Garzik | c9d3913 | 2005-11-13 17:47:51 -0500 | [diff] [blame] | 2912 | } |
| 2913 | #undef ZERO |
| 2914 | |
| 2915 | #define ZERO(reg) writel(0, hc_mmio + (reg)) |
| 2916 | static void mv5_reset_one_hc(struct mv_host_priv *hpriv, void __iomem *mmio, |
| 2917 | unsigned int hc) |
| 2918 | { |
| 2919 | void __iomem *hc_mmio = mv_hc_base(mmio, hc); |
| 2920 | u32 tmp; |
| 2921 | |
| 2922 | ZERO(0x00c); |
| 2923 | ZERO(0x010); |
| 2924 | ZERO(0x014); |
| 2925 | ZERO(0x018); |
| 2926 | |
| 2927 | tmp = readl(hc_mmio + 0x20); |
| 2928 | tmp &= 0x1c1c1c1c; |
| 2929 | tmp |= 0x03030303; |
| 2930 | writel(tmp, hc_mmio + 0x20); |
| 2931 | } |
| 2932 | #undef ZERO |
| 2933 | |
| 2934 | static int mv5_reset_hc(struct mv_host_priv *hpriv, void __iomem *mmio, |
| 2935 | unsigned int n_hc) |
| 2936 | { |
| 2937 | unsigned int hc, port; |
| 2938 | |
| 2939 | for (hc = 0; hc < n_hc; hc++) { |
| 2940 | for (port = 0; port < MV_PORTS_PER_HC; port++) |
| 2941 | mv5_reset_hc_port(hpriv, mmio, |
| 2942 | (hc * MV_PORTS_PER_HC) + port); |
| 2943 | |
| 2944 | mv5_reset_one_hc(hpriv, mmio, hc); |
| 2945 | } |
| 2946 | |
| 2947 | return 0; |
Jeff Garzik | 47c2b67 | 2005-11-12 21:13:17 -0500 | [diff] [blame] | 2948 | } |
| 2949 | |
Jeff Garzik | 101ffae | 2005-11-12 22:17:49 -0500 | [diff] [blame] | 2950 | #undef ZERO |
| 2951 | #define ZERO(reg) writel(0, mmio + (reg)) |
Saeed Bishara | 7bb3c52 | 2008-01-30 11:50:45 -1100 | [diff] [blame] | 2952 | static void mv_reset_pci_bus(struct ata_host *host, void __iomem *mmio) |
Jeff Garzik | 101ffae | 2005-11-12 22:17:49 -0500 | [diff] [blame] | 2953 | { |
Mark Lord | 02a121d | 2007-12-01 13:07:22 -0500 | [diff] [blame] | 2954 | struct mv_host_priv *hpriv = host->private_data; |
Jeff Garzik | 101ffae | 2005-11-12 22:17:49 -0500 | [diff] [blame] | 2955 | u32 tmp; |
| 2956 | |
Mark Lord | 8e7decd | 2008-05-02 02:07:51 -0400 | [diff] [blame] | 2957 | tmp = readl(mmio + MV_PCI_MODE_OFS); |
Jeff Garzik | 101ffae | 2005-11-12 22:17:49 -0500 | [diff] [blame] | 2958 | tmp &= 0xff00ffff; |
Mark Lord | 8e7decd | 2008-05-02 02:07:51 -0400 | [diff] [blame] | 2959 | writel(tmp, mmio + MV_PCI_MODE_OFS); |
Jeff Garzik | 101ffae | 2005-11-12 22:17:49 -0500 | [diff] [blame] | 2960 | |
| 2961 | ZERO(MV_PCI_DISC_TIMER); |
| 2962 | ZERO(MV_PCI_MSI_TRIGGER); |
Mark Lord | 8e7decd | 2008-05-02 02:07:51 -0400 | [diff] [blame] | 2963 | writel(0x000100ff, mmio + MV_PCI_XBAR_TMOUT_OFS); |
Jeff Garzik | 101ffae | 2005-11-12 22:17:49 -0500 | [diff] [blame] | 2964 | ZERO(MV_PCI_SERR_MASK); |
Mark Lord | 02a121d | 2007-12-01 13:07:22 -0500 | [diff] [blame] | 2965 | ZERO(hpriv->irq_cause_ofs); |
| 2966 | ZERO(hpriv->irq_mask_ofs); |
Jeff Garzik | 101ffae | 2005-11-12 22:17:49 -0500 | [diff] [blame] | 2967 | ZERO(MV_PCI_ERR_LOW_ADDRESS); |
| 2968 | ZERO(MV_PCI_ERR_HIGH_ADDRESS); |
| 2969 | ZERO(MV_PCI_ERR_ATTRIBUTE); |
| 2970 | ZERO(MV_PCI_ERR_COMMAND); |
| 2971 | } |
| 2972 | #undef ZERO |
| 2973 | |
| 2974 | static void mv6_reset_flash(struct mv_host_priv *hpriv, void __iomem *mmio) |
| 2975 | { |
| 2976 | u32 tmp; |
| 2977 | |
| 2978 | mv5_reset_flash(hpriv, mmio); |
| 2979 | |
Mark Lord | 8e7decd | 2008-05-02 02:07:51 -0400 | [diff] [blame] | 2980 | tmp = readl(mmio + MV_GPIO_PORT_CTL_OFS); |
Jeff Garzik | 101ffae | 2005-11-12 22:17:49 -0500 | [diff] [blame] | 2981 | tmp &= 0x3; |
| 2982 | tmp |= (1 << 5) | (1 << 6); |
Mark Lord | 8e7decd | 2008-05-02 02:07:51 -0400 | [diff] [blame] | 2983 | writel(tmp, mmio + MV_GPIO_PORT_CTL_OFS); |
Jeff Garzik | 101ffae | 2005-11-12 22:17:49 -0500 | [diff] [blame] | 2984 | } |
| 2985 | |
| 2986 | /** |
| 2987 | * mv6_reset_hc - Perform the 6xxx global soft reset |
| 2988 | * @mmio: base address of the HBA |
| 2989 | * |
| 2990 | * This routine only applies to 6xxx parts. |
| 2991 | * |
| 2992 | * LOCKING: |
| 2993 | * Inherited from caller. |
| 2994 | */ |
Jeff Garzik | c9d3913 | 2005-11-13 17:47:51 -0500 | [diff] [blame] | 2995 | static int mv6_reset_hc(struct mv_host_priv *hpriv, void __iomem *mmio, |
| 2996 | unsigned int n_hc) |
Jeff Garzik | 101ffae | 2005-11-12 22:17:49 -0500 | [diff] [blame] | 2997 | { |
| 2998 | void __iomem *reg = mmio + PCI_MAIN_CMD_STS_OFS; |
| 2999 | int i, rc = 0; |
| 3000 | u32 t; |
| 3001 | |
| 3002 | /* Following procedure defined in PCI "main command and status |
| 3003 | * register" table. |
| 3004 | */ |
| 3005 | t = readl(reg); |
| 3006 | writel(t | STOP_PCI_MASTER, reg); |
| 3007 | |
| 3008 | for (i = 0; i < 1000; i++) { |
| 3009 | udelay(1); |
| 3010 | t = readl(reg); |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 3011 | if (PCI_MASTER_EMPTY & t) |
Jeff Garzik | 101ffae | 2005-11-12 22:17:49 -0500 | [diff] [blame] | 3012 | break; |
Jeff Garzik | 101ffae | 2005-11-12 22:17:49 -0500 | [diff] [blame] | 3013 | } |
| 3014 | if (!(PCI_MASTER_EMPTY & t)) { |
| 3015 | printk(KERN_ERR DRV_NAME ": PCI master won't flush\n"); |
| 3016 | rc = 1; |
| 3017 | goto done; |
| 3018 | } |
| 3019 | |
| 3020 | /* set reset */ |
| 3021 | i = 5; |
| 3022 | do { |
| 3023 | writel(t | GLOB_SFT_RST, reg); |
| 3024 | t = readl(reg); |
| 3025 | udelay(1); |
| 3026 | } while (!(GLOB_SFT_RST & t) && (i-- > 0)); |
| 3027 | |
| 3028 | if (!(GLOB_SFT_RST & t)) { |
| 3029 | printk(KERN_ERR DRV_NAME ": can't set global reset\n"); |
| 3030 | rc = 1; |
| 3031 | goto done; |
| 3032 | } |
| 3033 | |
| 3034 | /* clear reset and *reenable the PCI master* (not mentioned in spec) */ |
| 3035 | i = 5; |
| 3036 | do { |
| 3037 | writel(t & ~(GLOB_SFT_RST | STOP_PCI_MASTER), reg); |
| 3038 | t = readl(reg); |
| 3039 | udelay(1); |
| 3040 | } while ((GLOB_SFT_RST & t) && (i-- > 0)); |
| 3041 | |
| 3042 | if (GLOB_SFT_RST & t) { |
| 3043 | printk(KERN_ERR DRV_NAME ": can't clear global reset\n"); |
| 3044 | rc = 1; |
| 3045 | } |
| 3046 | done: |
| 3047 | return rc; |
| 3048 | } |
| 3049 | |
Jeff Garzik | 47c2b67 | 2005-11-12 21:13:17 -0500 | [diff] [blame] | 3050 | static void mv6_read_preamp(struct mv_host_priv *hpriv, int idx, |
Jeff Garzik | ba3fe8f | 2005-11-12 19:08:48 -0500 | [diff] [blame] | 3051 | void __iomem *mmio) |
| 3052 | { |
| 3053 | void __iomem *port_mmio; |
| 3054 | u32 tmp; |
| 3055 | |
Mark Lord | 8e7decd | 2008-05-02 02:07:51 -0400 | [diff] [blame] | 3056 | tmp = readl(mmio + MV_RESET_CFG_OFS); |
Jeff Garzik | ba3fe8f | 2005-11-12 19:08:48 -0500 | [diff] [blame] | 3057 | if ((tmp & (1 << 0)) == 0) { |
Jeff Garzik | 47c2b67 | 2005-11-12 21:13:17 -0500 | [diff] [blame] | 3058 | hpriv->signal[idx].amps = 0x7 << 8; |
Jeff Garzik | ba3fe8f | 2005-11-12 19:08:48 -0500 | [diff] [blame] | 3059 | hpriv->signal[idx].pre = 0x1 << 5; |
| 3060 | return; |
| 3061 | } |
| 3062 | |
| 3063 | port_mmio = mv_port_base(mmio, idx); |
| 3064 | tmp = readl(port_mmio + PHY_MODE2); |
| 3065 | |
| 3066 | hpriv->signal[idx].amps = tmp & 0x700; /* bits 10:8 */ |
| 3067 | hpriv->signal[idx].pre = tmp & 0xe0; /* bits 7:5 */ |
| 3068 | } |
| 3069 | |
Jeff Garzik | 47c2b67 | 2005-11-12 21:13:17 -0500 | [diff] [blame] | 3070 | static void mv6_enable_leds(struct mv_host_priv *hpriv, void __iomem *mmio) |
Jeff Garzik | ba3fe8f | 2005-11-12 19:08:48 -0500 | [diff] [blame] | 3071 | { |
Mark Lord | 8e7decd | 2008-05-02 02:07:51 -0400 | [diff] [blame] | 3072 | writel(0x00000060, mmio + MV_GPIO_PORT_CTL_OFS); |
Jeff Garzik | ba3fe8f | 2005-11-12 19:08:48 -0500 | [diff] [blame] | 3073 | } |
| 3074 | |
Jeff Garzik | c9d3913 | 2005-11-13 17:47:51 -0500 | [diff] [blame] | 3075 | static void mv6_phy_errata(struct mv_host_priv *hpriv, void __iomem *mmio, |
Jeff Garzik | 2a47ce0 | 2005-11-12 23:05:14 -0500 | [diff] [blame] | 3076 | unsigned int port) |
Jeff Garzik | bca1c4e | 2005-11-12 12:48:15 -0500 | [diff] [blame] | 3077 | { |
Jeff Garzik | c9d3913 | 2005-11-13 17:47:51 -0500 | [diff] [blame] | 3078 | void __iomem *port_mmio = mv_port_base(mmio, port); |
| 3079 | |
Jeff Garzik | bca1c4e | 2005-11-12 12:48:15 -0500 | [diff] [blame] | 3080 | u32 hp_flags = hpriv->hp_flags; |
Jeff Garzik | 47c2b67 | 2005-11-12 21:13:17 -0500 | [diff] [blame] | 3081 | int fix_phy_mode2 = |
| 3082 | hp_flags & (MV_HP_ERRATA_60X1B2 | MV_HP_ERRATA_60X1C0); |
Jeff Garzik | bca1c4e | 2005-11-12 12:48:15 -0500 | [diff] [blame] | 3083 | int fix_phy_mode4 = |
Jeff Garzik | 47c2b67 | 2005-11-12 21:13:17 -0500 | [diff] [blame] | 3084 | hp_flags & (MV_HP_ERRATA_60X1B2 | MV_HP_ERRATA_60X1C0); |
Mark Lord | 8c30a8b | 2008-05-27 17:56:31 -0400 | [diff] [blame] | 3085 | u32 m2, m3; |
Jeff Garzik | 47c2b67 | 2005-11-12 21:13:17 -0500 | [diff] [blame] | 3086 | |
| 3087 | if (fix_phy_mode2) { |
| 3088 | m2 = readl(port_mmio + PHY_MODE2); |
| 3089 | m2 &= ~(1 << 16); |
| 3090 | m2 |= (1 << 31); |
| 3091 | writel(m2, port_mmio + PHY_MODE2); |
| 3092 | |
| 3093 | udelay(200); |
| 3094 | |
| 3095 | m2 = readl(port_mmio + PHY_MODE2); |
| 3096 | m2 &= ~((1 << 16) | (1 << 31)); |
| 3097 | writel(m2, port_mmio + PHY_MODE2); |
| 3098 | |
| 3099 | udelay(200); |
| 3100 | } |
| 3101 | |
Mark Lord | 8c30a8b | 2008-05-27 17:56:31 -0400 | [diff] [blame] | 3102 | /* |
| 3103 | * Gen-II/IIe PHY_MODE3 errata RM#2: |
| 3104 | * Achieves better receiver noise performance than the h/w default: |
| 3105 | */ |
| 3106 | m3 = readl(port_mmio + PHY_MODE3); |
| 3107 | m3 = (m3 & 0x1f) | (0x5555601 << 5); |
Jeff Garzik | bca1c4e | 2005-11-12 12:48:15 -0500 | [diff] [blame] | 3108 | |
Mark Lord | 0388a8c | 2008-05-28 13:41:52 -0400 | [diff] [blame] | 3109 | /* Guideline 88F5182 (GL# SATA-S11) */ |
| 3110 | if (IS_SOC(hpriv)) |
| 3111 | m3 &= ~0x1c; |
| 3112 | |
Jeff Garzik | bca1c4e | 2005-11-12 12:48:15 -0500 | [diff] [blame] | 3113 | if (fix_phy_mode4) { |
Mark Lord | ba069e3 | 2008-05-31 16:46:34 -0400 | [diff] [blame] | 3114 | u32 m4 = readl(port_mmio + PHY_MODE4); |
| 3115 | /* |
| 3116 | * Enforce reserved-bit restrictions on GenIIe devices only. |
| 3117 | * For earlier chipsets, force only the internal config field |
| 3118 | * (workaround for errata FEr SATA#10 part 1). |
| 3119 | */ |
Mark Lord | 8c30a8b | 2008-05-27 17:56:31 -0400 | [diff] [blame] | 3120 | if (IS_GEN_IIE(hpriv)) |
Mark Lord | ba069e3 | 2008-05-31 16:46:34 -0400 | [diff] [blame] | 3121 | m4 = (m4 & ~PHY_MODE4_RSVD_ZEROS) | PHY_MODE4_RSVD_ONES; |
| 3122 | else |
| 3123 | m4 = (m4 & ~PHY_MODE4_CFG_MASK) | PHY_MODE4_CFG_VALUE; |
Mark Lord | 8c30a8b | 2008-05-27 17:56:31 -0400 | [diff] [blame] | 3124 | writel(m4, port_mmio + PHY_MODE4); |
Jeff Garzik | bca1c4e | 2005-11-12 12:48:15 -0500 | [diff] [blame] | 3125 | } |
Mark Lord | b406c7a | 2008-05-28 12:01:12 -0400 | [diff] [blame] | 3126 | /* |
| 3127 | * Workaround for 60x1-B2 errata SATA#13: |
| 3128 | * Any write to PHY_MODE4 (above) may corrupt PHY_MODE3, |
| 3129 | * so we must always rewrite PHY_MODE3 after PHY_MODE4. |
| 3130 | */ |
| 3131 | writel(m3, port_mmio + PHY_MODE3); |
Jeff Garzik | bca1c4e | 2005-11-12 12:48:15 -0500 | [diff] [blame] | 3132 | |
| 3133 | /* Revert values of pre-emphasis and signal amps to the saved ones */ |
| 3134 | m2 = readl(port_mmio + PHY_MODE2); |
| 3135 | |
| 3136 | m2 &= ~MV_M2_PREAMP_MASK; |
Jeff Garzik | 2a47ce0 | 2005-11-12 23:05:14 -0500 | [diff] [blame] | 3137 | m2 |= hpriv->signal[port].amps; |
| 3138 | m2 |= hpriv->signal[port].pre; |
Jeff Garzik | 47c2b67 | 2005-11-12 21:13:17 -0500 | [diff] [blame] | 3139 | m2 &= ~(1 << 16); |
Jeff Garzik | bca1c4e | 2005-11-12 12:48:15 -0500 | [diff] [blame] | 3140 | |
Jeff Garzik | e4e7b89 | 2006-01-31 12:18:41 -0500 | [diff] [blame] | 3141 | /* according to mvSata 3.6.1, some IIE values are fixed */ |
| 3142 | if (IS_GEN_IIE(hpriv)) { |
| 3143 | m2 &= ~0xC30FF01F; |
| 3144 | m2 |= 0x0000900F; |
| 3145 | } |
| 3146 | |
Jeff Garzik | bca1c4e | 2005-11-12 12:48:15 -0500 | [diff] [blame] | 3147 | writel(m2, port_mmio + PHY_MODE2); |
| 3148 | } |
| 3149 | |
Saeed Bishara | f351b2d | 2008-02-01 18:08:03 -0500 | [diff] [blame] | 3150 | /* TODO: use the generic LED interface to configure the SATA Presence */ |
| 3151 | /* & Acitivy LEDs on the board */ |
| 3152 | static void mv_soc_enable_leds(struct mv_host_priv *hpriv, |
| 3153 | void __iomem *mmio) |
| 3154 | { |
| 3155 | return; |
| 3156 | } |
| 3157 | |
| 3158 | static void mv_soc_read_preamp(struct mv_host_priv *hpriv, int idx, |
| 3159 | void __iomem *mmio) |
| 3160 | { |
| 3161 | void __iomem *port_mmio; |
| 3162 | u32 tmp; |
| 3163 | |
| 3164 | port_mmio = mv_port_base(mmio, idx); |
| 3165 | tmp = readl(port_mmio + PHY_MODE2); |
| 3166 | |
| 3167 | hpriv->signal[idx].amps = tmp & 0x700; /* bits 10:8 */ |
| 3168 | hpriv->signal[idx].pre = tmp & 0xe0; /* bits 7:5 */ |
| 3169 | } |
| 3170 | |
| 3171 | #undef ZERO |
| 3172 | #define ZERO(reg) writel(0, port_mmio + (reg)) |
| 3173 | static void mv_soc_reset_hc_port(struct mv_host_priv *hpriv, |
| 3174 | void __iomem *mmio, unsigned int port) |
| 3175 | { |
| 3176 | void __iomem *port_mmio = mv_port_base(mmio, port); |
| 3177 | |
Mark Lord | e12bef5 | 2008-03-31 19:33:56 -0400 | [diff] [blame] | 3178 | mv_reset_channel(hpriv, mmio, port); |
Saeed Bishara | f351b2d | 2008-02-01 18:08:03 -0500 | [diff] [blame] | 3179 | |
| 3180 | ZERO(0x028); /* command */ |
| 3181 | writel(0x101f, port_mmio + EDMA_CFG_OFS); |
| 3182 | ZERO(0x004); /* timer */ |
| 3183 | ZERO(0x008); /* irq err cause */ |
| 3184 | ZERO(0x00c); /* irq err mask */ |
| 3185 | ZERO(0x010); /* rq bah */ |
| 3186 | ZERO(0x014); /* rq inp */ |
| 3187 | ZERO(0x018); /* rq outp */ |
| 3188 | ZERO(0x01c); /* respq bah */ |
| 3189 | ZERO(0x024); /* respq outp */ |
| 3190 | ZERO(0x020); /* respq inp */ |
| 3191 | ZERO(0x02c); /* test control */ |
Mark Lord | 8e7decd | 2008-05-02 02:07:51 -0400 | [diff] [blame] | 3192 | writel(0xbc, port_mmio + EDMA_IORDY_TMOUT_OFS); |
Saeed Bishara | f351b2d | 2008-02-01 18:08:03 -0500 | [diff] [blame] | 3193 | } |
| 3194 | |
| 3195 | #undef ZERO |
| 3196 | |
| 3197 | #define ZERO(reg) writel(0, hc_mmio + (reg)) |
| 3198 | static void mv_soc_reset_one_hc(struct mv_host_priv *hpriv, |
| 3199 | void __iomem *mmio) |
| 3200 | { |
| 3201 | void __iomem *hc_mmio = mv_hc_base(mmio, 0); |
| 3202 | |
| 3203 | ZERO(0x00c); |
| 3204 | ZERO(0x010); |
| 3205 | ZERO(0x014); |
| 3206 | |
| 3207 | } |
| 3208 | |
| 3209 | #undef ZERO |
| 3210 | |
| 3211 | static int mv_soc_reset_hc(struct mv_host_priv *hpriv, |
| 3212 | void __iomem *mmio, unsigned int n_hc) |
| 3213 | { |
| 3214 | unsigned int port; |
| 3215 | |
| 3216 | for (port = 0; port < hpriv->n_ports; port++) |
| 3217 | mv_soc_reset_hc_port(hpriv, mmio, port); |
| 3218 | |
| 3219 | mv_soc_reset_one_hc(hpriv, mmio); |
| 3220 | |
| 3221 | return 0; |
| 3222 | } |
| 3223 | |
| 3224 | static void mv_soc_reset_flash(struct mv_host_priv *hpriv, |
| 3225 | void __iomem *mmio) |
| 3226 | { |
| 3227 | return; |
| 3228 | } |
| 3229 | |
| 3230 | static void mv_soc_reset_bus(struct ata_host *host, void __iomem *mmio) |
| 3231 | { |
| 3232 | return; |
| 3233 | } |
| 3234 | |
Mark Lord | 8e7decd | 2008-05-02 02:07:51 -0400 | [diff] [blame] | 3235 | static void mv_setup_ifcfg(void __iomem *port_mmio, int want_gen2i) |
Mark Lord | b67a106 | 2008-03-31 19:35:13 -0400 | [diff] [blame] | 3236 | { |
Mark Lord | 8e7decd | 2008-05-02 02:07:51 -0400 | [diff] [blame] | 3237 | u32 ifcfg = readl(port_mmio + SATA_INTERFACE_CFG_OFS); |
Mark Lord | b67a106 | 2008-03-31 19:35:13 -0400 | [diff] [blame] | 3238 | |
Mark Lord | 8e7decd | 2008-05-02 02:07:51 -0400 | [diff] [blame] | 3239 | ifcfg = (ifcfg & 0xf7f) | 0x9b1000; /* from chip spec */ |
Mark Lord | b67a106 | 2008-03-31 19:35:13 -0400 | [diff] [blame] | 3240 | if (want_gen2i) |
Mark Lord | 8e7decd | 2008-05-02 02:07:51 -0400 | [diff] [blame] | 3241 | ifcfg |= (1 << 7); /* enable gen2i speed */ |
| 3242 | writelfl(ifcfg, port_mmio + SATA_INTERFACE_CFG_OFS); |
Mark Lord | b67a106 | 2008-03-31 19:35:13 -0400 | [diff] [blame] | 3243 | } |
| 3244 | |
Mark Lord | e12bef5 | 2008-03-31 19:33:56 -0400 | [diff] [blame] | 3245 | static void mv_reset_channel(struct mv_host_priv *hpriv, void __iomem *mmio, |
Jeff Garzik | c9d3913 | 2005-11-13 17:47:51 -0500 | [diff] [blame] | 3246 | unsigned int port_no) |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 3247 | { |
Jeff Garzik | c9d3913 | 2005-11-13 17:47:51 -0500 | [diff] [blame] | 3248 | void __iomem *port_mmio = mv_port_base(mmio, port_no); |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 3249 | |
Mark Lord | 8e7decd | 2008-05-02 02:07:51 -0400 | [diff] [blame] | 3250 | /* |
| 3251 | * The datasheet warns against setting EDMA_RESET when EDMA is active |
| 3252 | * (but doesn't say what the problem might be). So we first try |
| 3253 | * to disable the EDMA engine before doing the EDMA_RESET operation. |
| 3254 | */ |
Mark Lord | 0d8be5c | 2008-04-16 14:56:12 -0400 | [diff] [blame] | 3255 | mv_stop_edma_engine(port_mmio); |
Mark Lord | 8e7decd | 2008-05-02 02:07:51 -0400 | [diff] [blame] | 3256 | writelfl(EDMA_RESET, port_mmio + EDMA_CMD_OFS); |
Jeff Garzik | bca1c4e | 2005-11-12 12:48:15 -0500 | [diff] [blame] | 3257 | |
Mark Lord | b67a106 | 2008-03-31 19:35:13 -0400 | [diff] [blame] | 3258 | if (!IS_GEN_I(hpriv)) { |
Mark Lord | 8e7decd | 2008-05-02 02:07:51 -0400 | [diff] [blame] | 3259 | /* Enable 3.0gb/s link speed: this survives EDMA_RESET */ |
| 3260 | mv_setup_ifcfg(port_mmio, 1); |
Jeff Garzik | bca1c4e | 2005-11-12 12:48:15 -0500 | [diff] [blame] | 3261 | } |
Mark Lord | b67a106 | 2008-03-31 19:35:13 -0400 | [diff] [blame] | 3262 | /* |
Mark Lord | 8e7decd | 2008-05-02 02:07:51 -0400 | [diff] [blame] | 3263 | * Strobing EDMA_RESET here causes a hard reset of the SATA transport, |
Mark Lord | b67a106 | 2008-03-31 19:35:13 -0400 | [diff] [blame] | 3264 | * link, and physical layers. It resets all SATA interface registers |
| 3265 | * (except for SATA_INTERFACE_CFG), and issues a COMRESET to the dev. |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 3266 | */ |
Mark Lord | 8e7decd | 2008-05-02 02:07:51 -0400 | [diff] [blame] | 3267 | writelfl(EDMA_RESET, port_mmio + EDMA_CMD_OFS); |
Mark Lord | b67a106 | 2008-03-31 19:35:13 -0400 | [diff] [blame] | 3268 | udelay(25); /* allow reset propagation */ |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 3269 | writelfl(0, port_mmio + EDMA_CMD_OFS); |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 3270 | |
Jeff Garzik | c9d3913 | 2005-11-13 17:47:51 -0500 | [diff] [blame] | 3271 | hpriv->ops->phy_errata(hpriv, mmio, port_no); |
| 3272 | |
Jeff Garzik | ee9ccdf | 2007-07-12 15:51:22 -0400 | [diff] [blame] | 3273 | if (IS_GEN_I(hpriv)) |
Jeff Garzik | c9d3913 | 2005-11-13 17:47:51 -0500 | [diff] [blame] | 3274 | mdelay(1); |
| 3275 | } |
| 3276 | |
Mark Lord | e49856d | 2008-04-16 14:59:07 -0400 | [diff] [blame] | 3277 | static void mv_pmp_select(struct ata_port *ap, int pmp) |
Jeff Garzik | c9d3913 | 2005-11-13 17:47:51 -0500 | [diff] [blame] | 3278 | { |
Mark Lord | e49856d | 2008-04-16 14:59:07 -0400 | [diff] [blame] | 3279 | if (sata_pmp_supported(ap)) { |
| 3280 | void __iomem *port_mmio = mv_ap_base(ap); |
| 3281 | u32 reg = readl(port_mmio + SATA_IFCTL_OFS); |
| 3282 | int old = reg & 0xf; |
Jeff Garzik | c9d3913 | 2005-11-13 17:47:51 -0500 | [diff] [blame] | 3283 | |
Mark Lord | e49856d | 2008-04-16 14:59:07 -0400 | [diff] [blame] | 3284 | if (old != pmp) { |
| 3285 | reg = (reg & ~0xf) | pmp; |
| 3286 | writelfl(reg, port_mmio + SATA_IFCTL_OFS); |
| 3287 | } |
Tejun Heo | da3dbb1 | 2007-07-16 14:29:40 +0900 | [diff] [blame] | 3288 | } |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 3289 | } |
| 3290 | |
Mark Lord | e49856d | 2008-04-16 14:59:07 -0400 | [diff] [blame] | 3291 | static int mv_pmp_hardreset(struct ata_link *link, unsigned int *class, |
| 3292 | unsigned long deadline) |
Jeff Garzik | 2237467 | 2005-11-17 10:59:48 -0500 | [diff] [blame] | 3293 | { |
Mark Lord | e49856d | 2008-04-16 14:59:07 -0400 | [diff] [blame] | 3294 | mv_pmp_select(link->ap, sata_srst_pmp(link)); |
| 3295 | return sata_std_hardreset(link, class, deadline); |
| 3296 | } |
Jeff Garzik | 0ea9e17 | 2007-07-13 17:06:45 -0400 | [diff] [blame] | 3297 | |
Mark Lord | e49856d | 2008-04-16 14:59:07 -0400 | [diff] [blame] | 3298 | static int mv_softreset(struct ata_link *link, unsigned int *class, |
| 3299 | unsigned long deadline) |
| 3300 | { |
| 3301 | mv_pmp_select(link->ap, sata_srst_pmp(link)); |
| 3302 | return ata_sff_softreset(link, class, deadline); |
Jeff Garzik | 2237467 | 2005-11-17 10:59:48 -0500 | [diff] [blame] | 3303 | } |
| 3304 | |
Tejun Heo | cc0680a | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 3305 | static int mv_hardreset(struct ata_link *link, unsigned int *class, |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 3306 | unsigned long deadline) |
| 3307 | { |
Tejun Heo | cc0680a | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 3308 | struct ata_port *ap = link->ap; |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 3309 | struct mv_host_priv *hpriv = ap->host->private_data; |
Mark Lord | b562468 | 2008-03-31 19:34:40 -0400 | [diff] [blame] | 3310 | struct mv_port_priv *pp = ap->private_data; |
Saeed Bishara | f351b2d | 2008-02-01 18:08:03 -0500 | [diff] [blame] | 3311 | void __iomem *mmio = hpriv->base; |
Mark Lord | 0d8be5c | 2008-04-16 14:56:12 -0400 | [diff] [blame] | 3312 | int rc, attempts = 0, extra = 0; |
| 3313 | u32 sstatus; |
| 3314 | bool online; |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 3315 | |
Mark Lord | e12bef5 | 2008-03-31 19:33:56 -0400 | [diff] [blame] | 3316 | mv_reset_channel(hpriv, mmio, ap->port_no); |
Mark Lord | b562468 | 2008-03-31 19:34:40 -0400 | [diff] [blame] | 3317 | pp->pp_flags &= ~MV_PP_FLAG_EDMA_EN; |
Mark Lord | d16ab3f | 2009-02-25 15:17:43 -0500 | [diff] [blame] | 3318 | pp->pp_flags &= |
| 3319 | ~(MV_PP_FLAG_FBS_EN | MV_PP_FLAG_NCQ_EN | MV_PP_FLAG_FAKE_ATA_BUSY); |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 3320 | |
Mark Lord | 0d8be5c | 2008-04-16 14:56:12 -0400 | [diff] [blame] | 3321 | /* Workaround for errata FEr SATA#10 (part 2) */ |
| 3322 | do { |
Mark Lord | 17c5aab | 2008-04-16 14:56:51 -0400 | [diff] [blame] | 3323 | const unsigned long *timing = |
| 3324 | sata_ehc_deb_timing(&link->eh_context); |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 3325 | |
Mark Lord | 17c5aab | 2008-04-16 14:56:51 -0400 | [diff] [blame] | 3326 | rc = sata_link_hardreset(link, timing, deadline + extra, |
| 3327 | &online, NULL); |
Mark Lord | 9dcffd9 | 2008-05-14 09:18:12 -0400 | [diff] [blame] | 3328 | rc = online ? -EAGAIN : rc; |
Mark Lord | 17c5aab | 2008-04-16 14:56:51 -0400 | [diff] [blame] | 3329 | if (rc) |
Mark Lord | 0d8be5c | 2008-04-16 14:56:12 -0400 | [diff] [blame] | 3330 | return rc; |
Mark Lord | 0d8be5c | 2008-04-16 14:56:12 -0400 | [diff] [blame] | 3331 | sata_scr_read(link, SCR_STATUS, &sstatus); |
| 3332 | if (!IS_GEN_I(hpriv) && ++attempts >= 5 && sstatus == 0x121) { |
| 3333 | /* Force 1.5gb/s link speed and try again */ |
Mark Lord | 8e7decd | 2008-05-02 02:07:51 -0400 | [diff] [blame] | 3334 | mv_setup_ifcfg(mv_ap_base(ap), 0); |
Mark Lord | 0d8be5c | 2008-04-16 14:56:12 -0400 | [diff] [blame] | 3335 | if (time_after(jiffies + HZ, deadline)) |
| 3336 | extra = HZ; /* only extend it once, max */ |
| 3337 | } |
| 3338 | } while (sstatus != 0x0 && sstatus != 0x113 && sstatus != 0x123); |
Mark Lord | 08da175 | 2009-02-25 15:13:03 -0500 | [diff] [blame] | 3339 | mv_save_cached_regs(ap); |
Mark Lord | 66e57a2 | 2009-01-30 18:52:58 -0500 | [diff] [blame] | 3340 | mv_edma_cfg(ap, 0, 0); |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 3341 | |
Mark Lord | 17c5aab | 2008-04-16 14:56:51 -0400 | [diff] [blame] | 3342 | return rc; |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 3343 | } |
| 3344 | |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 3345 | static void mv_eh_freeze(struct ata_port *ap) |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 3346 | { |
Mark Lord | 1cfd19a | 2008-04-19 15:05:50 -0400 | [diff] [blame] | 3347 | mv_stop_edma(ap); |
Mark Lord | c4de573 | 2008-05-17 13:35:21 -0400 | [diff] [blame] | 3348 | mv_enable_port_irqs(ap, 0); |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 3349 | } |
| 3350 | |
| 3351 | static void mv_eh_thaw(struct ata_port *ap) |
| 3352 | { |
Saeed Bishara | f351b2d | 2008-02-01 18:08:03 -0500 | [diff] [blame] | 3353 | struct mv_host_priv *hpriv = ap->host->private_data; |
Mark Lord | c4de573 | 2008-05-17 13:35:21 -0400 | [diff] [blame] | 3354 | unsigned int port = ap->port_no; |
| 3355 | unsigned int hardport = mv_hardport_from_port(port); |
Mark Lord | 1cfd19a | 2008-04-19 15:05:50 -0400 | [diff] [blame] | 3356 | void __iomem *hc_mmio = mv_hc_base_from_port(hpriv->base, port); |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 3357 | void __iomem *port_mmio = mv_ap_base(ap); |
Mark Lord | c4de573 | 2008-05-17 13:35:21 -0400 | [diff] [blame] | 3358 | u32 hc_irq_cause; |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 3359 | |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 3360 | /* clear EDMA errors on this port */ |
| 3361 | writel(0, port_mmio + EDMA_ERR_IRQ_CAUSE_OFS); |
| 3362 | |
| 3363 | /* clear pending irq events */ |
Mark Lord | cae6edc | 2009-01-19 18:05:42 -0500 | [diff] [blame] | 3364 | hc_irq_cause = ~((DEV_IRQ | DMA_IRQ) << hardport); |
Mark Lord | 1cfd19a | 2008-04-19 15:05:50 -0400 | [diff] [blame] | 3365 | writelfl(hc_irq_cause, hc_mmio + HC_IRQ_CAUSE_OFS); |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 3366 | |
Mark Lord | 88e675e | 2008-05-17 13:36:30 -0400 | [diff] [blame] | 3367 | mv_enable_port_irqs(ap, ERR_IRQ); |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 3368 | } |
| 3369 | |
Brett Russ | 05b308e | 2005-10-05 17:08:53 -0400 | [diff] [blame] | 3370 | /** |
| 3371 | * mv_port_init - Perform some early initialization on a single port. |
| 3372 | * @port: libata data structure storing shadow register addresses |
| 3373 | * @port_mmio: base address of the port |
| 3374 | * |
| 3375 | * Initialize shadow register mmio addresses, clear outstanding |
| 3376 | * interrupts on the port, and unmask interrupts for the future |
| 3377 | * start of the port. |
| 3378 | * |
| 3379 | * LOCKING: |
| 3380 | * Inherited from caller. |
| 3381 | */ |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 3382 | static void mv_port_init(struct ata_ioports *port, void __iomem *port_mmio) |
| 3383 | { |
Tejun Heo | 0d5ff56 | 2007-02-01 15:06:36 +0900 | [diff] [blame] | 3384 | void __iomem *shd_base = port_mmio + SHD_BLK_OFS; |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 3385 | unsigned serr_ofs; |
| 3386 | |
Jeff Garzik | 8b26024 | 2005-11-12 12:32:50 -0500 | [diff] [blame] | 3387 | /* PIO related setup |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 3388 | */ |
| 3389 | port->data_addr = shd_base + (sizeof(u32) * ATA_REG_DATA); |
Jeff Garzik | 8b26024 | 2005-11-12 12:32:50 -0500 | [diff] [blame] | 3390 | port->error_addr = |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 3391 | port->feature_addr = shd_base + (sizeof(u32) * ATA_REG_ERR); |
| 3392 | port->nsect_addr = shd_base + (sizeof(u32) * ATA_REG_NSECT); |
| 3393 | port->lbal_addr = shd_base + (sizeof(u32) * ATA_REG_LBAL); |
| 3394 | port->lbam_addr = shd_base + (sizeof(u32) * ATA_REG_LBAM); |
| 3395 | port->lbah_addr = shd_base + (sizeof(u32) * ATA_REG_LBAH); |
| 3396 | port->device_addr = shd_base + (sizeof(u32) * ATA_REG_DEVICE); |
Jeff Garzik | 8b26024 | 2005-11-12 12:32:50 -0500 | [diff] [blame] | 3397 | port->status_addr = |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 3398 | port->command_addr = shd_base + (sizeof(u32) * ATA_REG_STATUS); |
| 3399 | /* special case: control/altstatus doesn't have ATA_REG_ address */ |
| 3400 | port->altstatus_addr = port->ctl_addr = shd_base + SHD_CTL_AST_OFS; |
| 3401 | |
| 3402 | /* unused: */ |
Randy Dunlap | 8d9db2d | 2007-02-16 01:40:06 -0800 | [diff] [blame] | 3403 | port->cmd_addr = port->bmdma_addr = port->scr_addr = NULL; |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 3404 | |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 3405 | /* Clear any currently outstanding port interrupt conditions */ |
| 3406 | serr_ofs = mv_scr_offset(SCR_ERROR); |
| 3407 | writelfl(readl(port_mmio + serr_ofs), port_mmio + serr_ofs); |
| 3408 | writelfl(0, port_mmio + EDMA_ERR_IRQ_CAUSE_OFS); |
| 3409 | |
Mark Lord | 646a4da | 2008-01-26 18:30:37 -0500 | [diff] [blame] | 3410 | /* unmask all non-transient EDMA error interrupts */ |
| 3411 | writelfl(~EDMA_ERR_IRQ_TRANSIENT, port_mmio + EDMA_ERR_IRQ_MASK_OFS); |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 3412 | |
Jeff Garzik | 8b26024 | 2005-11-12 12:32:50 -0500 | [diff] [blame] | 3413 | VPRINTK("EDMA cfg=0x%08x EDMA IRQ err cause/mask=0x%08x/0x%08x\n", |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 3414 | readl(port_mmio + EDMA_CFG_OFS), |
| 3415 | readl(port_mmio + EDMA_ERR_IRQ_CAUSE_OFS), |
| 3416 | readl(port_mmio + EDMA_ERR_IRQ_MASK_OFS)); |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 3417 | } |
| 3418 | |
Mark Lord | 616d4a9 | 2008-05-02 02:08:32 -0400 | [diff] [blame] | 3419 | static unsigned int mv_in_pcix_mode(struct ata_host *host) |
| 3420 | { |
| 3421 | struct mv_host_priv *hpriv = host->private_data; |
| 3422 | void __iomem *mmio = hpriv->base; |
| 3423 | u32 reg; |
| 3424 | |
Mark Lord | 1f39847 | 2008-05-27 17:54:48 -0400 | [diff] [blame] | 3425 | if (IS_SOC(hpriv) || !IS_PCIE(hpriv)) |
Mark Lord | 616d4a9 | 2008-05-02 02:08:32 -0400 | [diff] [blame] | 3426 | return 0; /* not PCI-X capable */ |
| 3427 | reg = readl(mmio + MV_PCI_MODE_OFS); |
| 3428 | if ((reg & MV_PCI_MODE_MASK) == 0) |
| 3429 | return 0; /* conventional PCI mode */ |
| 3430 | return 1; /* chip is in PCI-X mode */ |
| 3431 | } |
| 3432 | |
| 3433 | static int mv_pci_cut_through_okay(struct ata_host *host) |
| 3434 | { |
| 3435 | struct mv_host_priv *hpriv = host->private_data; |
| 3436 | void __iomem *mmio = hpriv->base; |
| 3437 | u32 reg; |
| 3438 | |
| 3439 | if (!mv_in_pcix_mode(host)) { |
| 3440 | reg = readl(mmio + PCI_COMMAND_OFS); |
| 3441 | if (reg & PCI_COMMAND_MRDTRIG) |
| 3442 | return 0; /* not okay */ |
| 3443 | } |
| 3444 | return 1; /* okay */ |
| 3445 | } |
| 3446 | |
Tejun Heo | 4447d35 | 2007-04-17 23:44:08 +0900 | [diff] [blame] | 3447 | static int mv_chip_id(struct ata_host *host, unsigned int board_idx) |
Jeff Garzik | bca1c4e | 2005-11-12 12:48:15 -0500 | [diff] [blame] | 3448 | { |
Tejun Heo | 4447d35 | 2007-04-17 23:44:08 +0900 | [diff] [blame] | 3449 | struct pci_dev *pdev = to_pci_dev(host->dev); |
| 3450 | struct mv_host_priv *hpriv = host->private_data; |
Jeff Garzik | bca1c4e | 2005-11-12 12:48:15 -0500 | [diff] [blame] | 3451 | u32 hp_flags = hpriv->hp_flags; |
| 3452 | |
Jeff Garzik | 5796d1c | 2007-10-26 00:03:37 -0400 | [diff] [blame] | 3453 | switch (board_idx) { |
Jeff Garzik | 47c2b67 | 2005-11-12 21:13:17 -0500 | [diff] [blame] | 3454 | case chip_5080: |
| 3455 | hpriv->ops = &mv5xxx_ops; |
Jeff Garzik | ee9ccdf | 2007-07-12 15:51:22 -0400 | [diff] [blame] | 3456 | hp_flags |= MV_HP_GEN_I; |
Jeff Garzik | bca1c4e | 2005-11-12 12:48:15 -0500 | [diff] [blame] | 3457 | |
Auke Kok | 44c1013 | 2007-06-08 15:46:36 -0700 | [diff] [blame] | 3458 | switch (pdev->revision) { |
Jeff Garzik | 47c2b67 | 2005-11-12 21:13:17 -0500 | [diff] [blame] | 3459 | case 0x1: |
| 3460 | hp_flags |= MV_HP_ERRATA_50XXB0; |
| 3461 | break; |
| 3462 | case 0x3: |
| 3463 | hp_flags |= MV_HP_ERRATA_50XXB2; |
| 3464 | break; |
| 3465 | default: |
| 3466 | dev_printk(KERN_WARNING, &pdev->dev, |
| 3467 | "Applying 50XXB2 workarounds to unknown rev\n"); |
| 3468 | hp_flags |= MV_HP_ERRATA_50XXB2; |
| 3469 | break; |
| 3470 | } |
| 3471 | break; |
| 3472 | |
| 3473 | case chip_504x: |
| 3474 | case chip_508x: |
| 3475 | hpriv->ops = &mv5xxx_ops; |
Jeff Garzik | ee9ccdf | 2007-07-12 15:51:22 -0400 | [diff] [blame] | 3476 | hp_flags |= MV_HP_GEN_I; |
Jeff Garzik | 47c2b67 | 2005-11-12 21:13:17 -0500 | [diff] [blame] | 3477 | |
Auke Kok | 44c1013 | 2007-06-08 15:46:36 -0700 | [diff] [blame] | 3478 | switch (pdev->revision) { |
Jeff Garzik | 47c2b67 | 2005-11-12 21:13:17 -0500 | [diff] [blame] | 3479 | case 0x0: |
| 3480 | hp_flags |= MV_HP_ERRATA_50XXB0; |
| 3481 | break; |
| 3482 | case 0x3: |
| 3483 | hp_flags |= MV_HP_ERRATA_50XXB2; |
| 3484 | break; |
| 3485 | default: |
| 3486 | dev_printk(KERN_WARNING, &pdev->dev, |
| 3487 | "Applying B2 workarounds to unknown rev\n"); |
| 3488 | hp_flags |= MV_HP_ERRATA_50XXB2; |
| 3489 | break; |
Jeff Garzik | bca1c4e | 2005-11-12 12:48:15 -0500 | [diff] [blame] | 3490 | } |
| 3491 | break; |
| 3492 | |
| 3493 | case chip_604x: |
| 3494 | case chip_608x: |
Jeff Garzik | 47c2b67 | 2005-11-12 21:13:17 -0500 | [diff] [blame] | 3495 | hpriv->ops = &mv6xxx_ops; |
Jeff Garzik | ee9ccdf | 2007-07-12 15:51:22 -0400 | [diff] [blame] | 3496 | hp_flags |= MV_HP_GEN_II; |
Jeff Garzik | 47c2b67 | 2005-11-12 21:13:17 -0500 | [diff] [blame] | 3497 | |
Auke Kok | 44c1013 | 2007-06-08 15:46:36 -0700 | [diff] [blame] | 3498 | switch (pdev->revision) { |
Jeff Garzik | 47c2b67 | 2005-11-12 21:13:17 -0500 | [diff] [blame] | 3499 | case 0x7: |
| 3500 | hp_flags |= MV_HP_ERRATA_60X1B2; |
| 3501 | break; |
| 3502 | case 0x9: |
| 3503 | hp_flags |= MV_HP_ERRATA_60X1C0; |
Jeff Garzik | bca1c4e | 2005-11-12 12:48:15 -0500 | [diff] [blame] | 3504 | break; |
| 3505 | default: |
| 3506 | dev_printk(KERN_WARNING, &pdev->dev, |
Jeff Garzik | 47c2b67 | 2005-11-12 21:13:17 -0500 | [diff] [blame] | 3507 | "Applying B2 workarounds to unknown rev\n"); |
| 3508 | hp_flags |= MV_HP_ERRATA_60X1B2; |
Jeff Garzik | bca1c4e | 2005-11-12 12:48:15 -0500 | [diff] [blame] | 3509 | break; |
| 3510 | } |
| 3511 | break; |
| 3512 | |
Jeff Garzik | e4e7b89 | 2006-01-31 12:18:41 -0500 | [diff] [blame] | 3513 | case chip_7042: |
Mark Lord | 616d4a9 | 2008-05-02 02:08:32 -0400 | [diff] [blame] | 3514 | hp_flags |= MV_HP_PCIE | MV_HP_CUT_THROUGH; |
Mark Lord | 306b30f | 2007-12-04 14:07:52 -0500 | [diff] [blame] | 3515 | if (pdev->vendor == PCI_VENDOR_ID_TTI && |
| 3516 | (pdev->device == 0x2300 || pdev->device == 0x2310)) |
| 3517 | { |
Mark Lord | 4e52003 | 2007-12-11 12:58:05 -0500 | [diff] [blame] | 3518 | /* |
| 3519 | * Highpoint RocketRAID PCIe 23xx series cards: |
| 3520 | * |
| 3521 | * Unconfigured drives are treated as "Legacy" |
| 3522 | * by the BIOS, and it overwrites sector 8 with |
| 3523 | * a "Lgcy" metadata block prior to Linux boot. |
| 3524 | * |
| 3525 | * Configured drives (RAID or JBOD) leave sector 8 |
| 3526 | * alone, but instead overwrite a high numbered |
| 3527 | * sector for the RAID metadata. This sector can |
| 3528 | * be determined exactly, by truncating the physical |
| 3529 | * drive capacity to a nice even GB value. |
| 3530 | * |
| 3531 | * RAID metadata is at: (dev->n_sectors & ~0xfffff) |
| 3532 | * |
| 3533 | * Warn the user, lest they think we're just buggy. |
| 3534 | */ |
| 3535 | printk(KERN_WARNING DRV_NAME ": Highpoint RocketRAID" |
| 3536 | " BIOS CORRUPTS DATA on all attached drives," |
| 3537 | " regardless of if/how they are configured." |
| 3538 | " BEWARE!\n"); |
| 3539 | printk(KERN_WARNING DRV_NAME ": For data safety, do not" |
| 3540 | " use sectors 8-9 on \"Legacy\" drives," |
| 3541 | " and avoid the final two gigabytes on" |
| 3542 | " all RocketRAID BIOS initialized drives.\n"); |
Mark Lord | 306b30f | 2007-12-04 14:07:52 -0500 | [diff] [blame] | 3543 | } |
Mark Lord | 8e7decd | 2008-05-02 02:07:51 -0400 | [diff] [blame] | 3544 | /* drop through */ |
Jeff Garzik | e4e7b89 | 2006-01-31 12:18:41 -0500 | [diff] [blame] | 3545 | case chip_6042: |
| 3546 | hpriv->ops = &mv6xxx_ops; |
Jeff Garzik | e4e7b89 | 2006-01-31 12:18:41 -0500 | [diff] [blame] | 3547 | hp_flags |= MV_HP_GEN_IIE; |
Mark Lord | 616d4a9 | 2008-05-02 02:08:32 -0400 | [diff] [blame] | 3548 | if (board_idx == chip_6042 && mv_pci_cut_through_okay(host)) |
| 3549 | hp_flags |= MV_HP_CUT_THROUGH; |
Jeff Garzik | e4e7b89 | 2006-01-31 12:18:41 -0500 | [diff] [blame] | 3550 | |
Auke Kok | 44c1013 | 2007-06-08 15:46:36 -0700 | [diff] [blame] | 3551 | switch (pdev->revision) { |
Mark Lord | 5cf73bf | 2008-05-27 17:58:56 -0400 | [diff] [blame] | 3552 | case 0x2: /* Rev.B0: the first/only public release */ |
Jeff Garzik | e4e7b89 | 2006-01-31 12:18:41 -0500 | [diff] [blame] | 3553 | hp_flags |= MV_HP_ERRATA_60X1C0; |
| 3554 | break; |
| 3555 | default: |
| 3556 | dev_printk(KERN_WARNING, &pdev->dev, |
| 3557 | "Applying 60X1C0 workarounds to unknown rev\n"); |
| 3558 | hp_flags |= MV_HP_ERRATA_60X1C0; |
| 3559 | break; |
| 3560 | } |
| 3561 | break; |
Saeed Bishara | f351b2d | 2008-02-01 18:08:03 -0500 | [diff] [blame] | 3562 | case chip_soc: |
| 3563 | hpriv->ops = &mv_soc_ops; |
Saeed Bishara | eb3a55a | 2008-08-04 00:52:55 -1100 | [diff] [blame] | 3564 | hp_flags |= MV_HP_FLAG_SOC | MV_HP_GEN_IIE | |
| 3565 | MV_HP_ERRATA_60X1C0; |
Saeed Bishara | f351b2d | 2008-02-01 18:08:03 -0500 | [diff] [blame] | 3566 | break; |
Jeff Garzik | e4e7b89 | 2006-01-31 12:18:41 -0500 | [diff] [blame] | 3567 | |
Jeff Garzik | bca1c4e | 2005-11-12 12:48:15 -0500 | [diff] [blame] | 3568 | default: |
Saeed Bishara | f351b2d | 2008-02-01 18:08:03 -0500 | [diff] [blame] | 3569 | dev_printk(KERN_ERR, host->dev, |
Jeff Garzik | 5796d1c | 2007-10-26 00:03:37 -0400 | [diff] [blame] | 3570 | "BUG: invalid board index %u\n", board_idx); |
Jeff Garzik | bca1c4e | 2005-11-12 12:48:15 -0500 | [diff] [blame] | 3571 | return 1; |
| 3572 | } |
| 3573 | |
| 3574 | hpriv->hp_flags = hp_flags; |
Mark Lord | 02a121d | 2007-12-01 13:07:22 -0500 | [diff] [blame] | 3575 | if (hp_flags & MV_HP_PCIE) { |
| 3576 | hpriv->irq_cause_ofs = PCIE_IRQ_CAUSE_OFS; |
| 3577 | hpriv->irq_mask_ofs = PCIE_IRQ_MASK_OFS; |
| 3578 | hpriv->unmask_all_irqs = PCIE_UNMASK_ALL_IRQS; |
| 3579 | } else { |
| 3580 | hpriv->irq_cause_ofs = PCI_IRQ_CAUSE_OFS; |
| 3581 | hpriv->irq_mask_ofs = PCI_IRQ_MASK_OFS; |
| 3582 | hpriv->unmask_all_irqs = PCI_UNMASK_ALL_IRQS; |
| 3583 | } |
Jeff Garzik | bca1c4e | 2005-11-12 12:48:15 -0500 | [diff] [blame] | 3584 | |
| 3585 | return 0; |
| 3586 | } |
| 3587 | |
Brett Russ | 05b308e | 2005-10-05 17:08:53 -0400 | [diff] [blame] | 3588 | /** |
Jeff Garzik | 47c2b67 | 2005-11-12 21:13:17 -0500 | [diff] [blame] | 3589 | * mv_init_host - Perform some early initialization of the host. |
Tejun Heo | 4447d35 | 2007-04-17 23:44:08 +0900 | [diff] [blame] | 3590 | * @host: ATA host to initialize |
| 3591 | * @board_idx: controller index |
Brett Russ | 05b308e | 2005-10-05 17:08:53 -0400 | [diff] [blame] | 3592 | * |
| 3593 | * If possible, do an early global reset of the host. Then do |
| 3594 | * our port init and clear/unmask all/relevant host interrupts. |
| 3595 | * |
| 3596 | * LOCKING: |
| 3597 | * Inherited from caller. |
| 3598 | */ |
Tejun Heo | 4447d35 | 2007-04-17 23:44:08 +0900 | [diff] [blame] | 3599 | static int mv_init_host(struct ata_host *host, unsigned int board_idx) |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 3600 | { |
| 3601 | int rc = 0, n_hc, port, hc; |
Tejun Heo | 4447d35 | 2007-04-17 23:44:08 +0900 | [diff] [blame] | 3602 | struct mv_host_priv *hpriv = host->private_data; |
Saeed Bishara | f351b2d | 2008-02-01 18:08:03 -0500 | [diff] [blame] | 3603 | void __iomem *mmio = hpriv->base; |
Jeff Garzik | 47c2b67 | 2005-11-12 21:13:17 -0500 | [diff] [blame] | 3604 | |
Tejun Heo | 4447d35 | 2007-04-17 23:44:08 +0900 | [diff] [blame] | 3605 | rc = mv_chip_id(host, board_idx); |
Jeff Garzik | bca1c4e | 2005-11-12 12:48:15 -0500 | [diff] [blame] | 3606 | if (rc) |
Mark Lord | 352fab7 | 2008-04-19 14:43:42 -0400 | [diff] [blame] | 3607 | goto done; |
Saeed Bishara | f351b2d | 2008-02-01 18:08:03 -0500 | [diff] [blame] | 3608 | |
Mark Lord | 1f39847 | 2008-05-27 17:54:48 -0400 | [diff] [blame] | 3609 | if (IS_SOC(hpriv)) { |
Mark Lord | 7368f91 | 2008-04-25 11:24:24 -0400 | [diff] [blame] | 3610 | hpriv->main_irq_cause_addr = mmio + SOC_HC_MAIN_IRQ_CAUSE_OFS; |
| 3611 | hpriv->main_irq_mask_addr = mmio + SOC_HC_MAIN_IRQ_MASK_OFS; |
Mark Lord | 1f39847 | 2008-05-27 17:54:48 -0400 | [diff] [blame] | 3612 | } else { |
| 3613 | hpriv->main_irq_cause_addr = mmio + PCI_HC_MAIN_IRQ_CAUSE_OFS; |
| 3614 | hpriv->main_irq_mask_addr = mmio + PCI_HC_MAIN_IRQ_MASK_OFS; |
Saeed Bishara | f351b2d | 2008-02-01 18:08:03 -0500 | [diff] [blame] | 3615 | } |
Mark Lord | 352fab7 | 2008-04-19 14:43:42 -0400 | [diff] [blame] | 3616 | |
Thomas Reitmayr | 5d0fb2e | 2009-01-24 20:24:58 +0100 | [diff] [blame] | 3617 | /* initialize shadow irq mask with register's value */ |
| 3618 | hpriv->main_irq_mask = readl(hpriv->main_irq_mask_addr); |
| 3619 | |
Mark Lord | 352fab7 | 2008-04-19 14:43:42 -0400 | [diff] [blame] | 3620 | /* global interrupt mask: 0 == mask everything */ |
Mark Lord | c4de573 | 2008-05-17 13:35:21 -0400 | [diff] [blame] | 3621 | mv_set_main_irq_mask(host, ~0, 0); |
Jeff Garzik | bca1c4e | 2005-11-12 12:48:15 -0500 | [diff] [blame] | 3622 | |
Tejun Heo | 4447d35 | 2007-04-17 23:44:08 +0900 | [diff] [blame] | 3623 | n_hc = mv_get_hc_count(host->ports[0]->flags); |
Jeff Garzik | bca1c4e | 2005-11-12 12:48:15 -0500 | [diff] [blame] | 3624 | |
Tejun Heo | 4447d35 | 2007-04-17 23:44:08 +0900 | [diff] [blame] | 3625 | for (port = 0; port < host->n_ports; port++) |
Jeff Garzik | 47c2b67 | 2005-11-12 21:13:17 -0500 | [diff] [blame] | 3626 | hpriv->ops->read_preamp(hpriv, port, mmio); |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 3627 | |
Jeff Garzik | c9d3913 | 2005-11-13 17:47:51 -0500 | [diff] [blame] | 3628 | rc = hpriv->ops->reset_hc(hpriv, mmio, n_hc); |
Jeff Garzik | 47c2b67 | 2005-11-12 21:13:17 -0500 | [diff] [blame] | 3629 | if (rc) |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 3630 | goto done; |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 3631 | |
Jeff Garzik | 522479f | 2005-11-12 22:14:02 -0500 | [diff] [blame] | 3632 | hpriv->ops->reset_flash(hpriv, mmio); |
Saeed Bishara | 7bb3c52 | 2008-01-30 11:50:45 -1100 | [diff] [blame] | 3633 | hpriv->ops->reset_bus(host, mmio); |
Jeff Garzik | 47c2b67 | 2005-11-12 21:13:17 -0500 | [diff] [blame] | 3634 | hpriv->ops->enable_leds(hpriv, mmio); |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 3635 | |
Tejun Heo | 4447d35 | 2007-04-17 23:44:08 +0900 | [diff] [blame] | 3636 | for (port = 0; port < host->n_ports; port++) { |
Tejun Heo | cbcdd87 | 2007-08-18 13:14:55 +0900 | [diff] [blame] | 3637 | struct ata_port *ap = host->ports[port]; |
Jeff Garzik | 2a47ce0 | 2005-11-12 23:05:14 -0500 | [diff] [blame] | 3638 | void __iomem *port_mmio = mv_port_base(mmio, port); |
Tejun Heo | cbcdd87 | 2007-08-18 13:14:55 +0900 | [diff] [blame] | 3639 | |
| 3640 | mv_port_init(&ap->ioaddr, port_mmio); |
| 3641 | |
Saeed Bishara | 7bb3c52 | 2008-01-30 11:50:45 -1100 | [diff] [blame] | 3642 | #ifdef CONFIG_PCI |
Mark Lord | 1f39847 | 2008-05-27 17:54:48 -0400 | [diff] [blame] | 3643 | if (!IS_SOC(hpriv)) { |
Saeed Bishara | f351b2d | 2008-02-01 18:08:03 -0500 | [diff] [blame] | 3644 | unsigned int offset = port_mmio - mmio; |
| 3645 | ata_port_pbar_desc(ap, MV_PRIMARY_BAR, -1, "mmio"); |
| 3646 | ata_port_pbar_desc(ap, MV_PRIMARY_BAR, offset, "port"); |
| 3647 | } |
Saeed Bishara | 7bb3c52 | 2008-01-30 11:50:45 -1100 | [diff] [blame] | 3648 | #endif |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 3649 | } |
| 3650 | |
| 3651 | for (hc = 0; hc < n_hc; hc++) { |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 3652 | void __iomem *hc_mmio = mv_hc_base(mmio, hc); |
| 3653 | |
| 3654 | VPRINTK("HC%i: HC config=0x%08x HC IRQ cause " |
| 3655 | "(before clear)=0x%08x\n", hc, |
| 3656 | readl(hc_mmio + HC_CFG_OFS), |
| 3657 | readl(hc_mmio + HC_IRQ_CAUSE_OFS)); |
| 3658 | |
| 3659 | /* Clear any currently outstanding hc interrupt conditions */ |
| 3660 | writelfl(0, hc_mmio + HC_IRQ_CAUSE_OFS); |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 3661 | } |
| 3662 | |
Mark Lord | 6be96ac | 2009-02-19 10:38:04 -0500 | [diff] [blame] | 3663 | /* Clear any currently outstanding host interrupt conditions */ |
| 3664 | writelfl(0, mmio + hpriv->irq_cause_ofs); |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 3665 | |
Mark Lord | 6be96ac | 2009-02-19 10:38:04 -0500 | [diff] [blame] | 3666 | /* and unmask interrupt generation for host regs */ |
| 3667 | writelfl(hpriv->unmask_all_irqs, mmio + hpriv->irq_mask_ofs); |
Jeff Garzik | fb621e2 | 2007-02-25 04:19:45 -0500 | [diff] [blame] | 3668 | |
Mark Lord | 6be96ac | 2009-02-19 10:38:04 -0500 | [diff] [blame] | 3669 | /* |
| 3670 | * enable only global host interrupts for now. |
| 3671 | * The per-port interrupts get done later as ports are set up. |
| 3672 | */ |
| 3673 | mv_set_main_irq_mask(host, 0, PCI_ERR); |
Mark Lord | 2b748a0 | 2009-03-10 22:01:17 -0400 | [diff] [blame^] | 3674 | mv_set_irq_coalescing(host, irq_coalescing_io_count, |
| 3675 | irq_coalescing_usecs); |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 3676 | done: |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 3677 | return rc; |
| 3678 | } |
| 3679 | |
Byron Bradley | fbf14e2 | 2008-02-10 21:17:30 +0000 | [diff] [blame] | 3680 | static int mv_create_dma_pools(struct mv_host_priv *hpriv, struct device *dev) |
| 3681 | { |
| 3682 | hpriv->crqb_pool = dmam_pool_create("crqb_q", dev, MV_CRQB_Q_SZ, |
| 3683 | MV_CRQB_Q_SZ, 0); |
| 3684 | if (!hpriv->crqb_pool) |
| 3685 | return -ENOMEM; |
| 3686 | |
| 3687 | hpriv->crpb_pool = dmam_pool_create("crpb_q", dev, MV_CRPB_Q_SZ, |
| 3688 | MV_CRPB_Q_SZ, 0); |
| 3689 | if (!hpriv->crpb_pool) |
| 3690 | return -ENOMEM; |
| 3691 | |
| 3692 | hpriv->sg_tbl_pool = dmam_pool_create("sg_tbl", dev, MV_SG_TBL_SZ, |
| 3693 | MV_SG_TBL_SZ, 0); |
| 3694 | if (!hpriv->sg_tbl_pool) |
| 3695 | return -ENOMEM; |
| 3696 | |
| 3697 | return 0; |
| 3698 | } |
| 3699 | |
Lennert Buytenhek | 15a3263 | 2008-03-27 14:51:39 -0400 | [diff] [blame] | 3700 | static void mv_conf_mbus_windows(struct mv_host_priv *hpriv, |
| 3701 | struct mbus_dram_target_info *dram) |
| 3702 | { |
| 3703 | int i; |
| 3704 | |
| 3705 | for (i = 0; i < 4; i++) { |
| 3706 | writel(0, hpriv->base + WINDOW_CTRL(i)); |
| 3707 | writel(0, hpriv->base + WINDOW_BASE(i)); |
| 3708 | } |
| 3709 | |
| 3710 | for (i = 0; i < dram->num_cs; i++) { |
| 3711 | struct mbus_dram_window *cs = dram->cs + i; |
| 3712 | |
| 3713 | writel(((cs->size - 1) & 0xffff0000) | |
| 3714 | (cs->mbus_attr << 8) | |
| 3715 | (dram->mbus_dram_target_id << 4) | 1, |
| 3716 | hpriv->base + WINDOW_CTRL(i)); |
| 3717 | writel(cs->base, hpriv->base + WINDOW_BASE(i)); |
| 3718 | } |
| 3719 | } |
| 3720 | |
Saeed Bishara | f351b2d | 2008-02-01 18:08:03 -0500 | [diff] [blame] | 3721 | /** |
| 3722 | * mv_platform_probe - handle a positive probe of an soc Marvell |
| 3723 | * host |
| 3724 | * @pdev: platform device found |
| 3725 | * |
| 3726 | * LOCKING: |
| 3727 | * Inherited from caller. |
| 3728 | */ |
| 3729 | static int mv_platform_probe(struct platform_device *pdev) |
| 3730 | { |
| 3731 | static int printed_version; |
| 3732 | const struct mv_sata_platform_data *mv_platform_data; |
| 3733 | const struct ata_port_info *ppi[] = |
| 3734 | { &mv_port_info[chip_soc], NULL }; |
| 3735 | struct ata_host *host; |
| 3736 | struct mv_host_priv *hpriv; |
| 3737 | struct resource *res; |
| 3738 | int n_ports, rc; |
| 3739 | |
| 3740 | if (!printed_version++) |
| 3741 | dev_printk(KERN_INFO, &pdev->dev, "version " DRV_VERSION "\n"); |
| 3742 | |
| 3743 | /* |
| 3744 | * Simple resource validation .. |
| 3745 | */ |
| 3746 | if (unlikely(pdev->num_resources != 2)) { |
| 3747 | dev_err(&pdev->dev, "invalid number of resources\n"); |
| 3748 | return -EINVAL; |
| 3749 | } |
| 3750 | |
| 3751 | /* |
| 3752 | * Get the register base first |
| 3753 | */ |
| 3754 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
| 3755 | if (res == NULL) |
| 3756 | return -EINVAL; |
| 3757 | |
| 3758 | /* allocate host */ |
| 3759 | mv_platform_data = pdev->dev.platform_data; |
| 3760 | n_ports = mv_platform_data->n_ports; |
| 3761 | |
| 3762 | host = ata_host_alloc_pinfo(&pdev->dev, ppi, n_ports); |
| 3763 | hpriv = devm_kzalloc(&pdev->dev, sizeof(*hpriv), GFP_KERNEL); |
| 3764 | |
| 3765 | if (!host || !hpriv) |
| 3766 | return -ENOMEM; |
| 3767 | host->private_data = hpriv; |
| 3768 | hpriv->n_ports = n_ports; |
| 3769 | |
| 3770 | host->iomap = NULL; |
Saeed Bishara | f1cb0ea | 2008-02-18 07:42:28 -1100 | [diff] [blame] | 3771 | hpriv->base = devm_ioremap(&pdev->dev, res->start, |
| 3772 | res->end - res->start + 1); |
Saeed Bishara | f351b2d | 2008-02-01 18:08:03 -0500 | [diff] [blame] | 3773 | hpriv->base -= MV_SATAHC0_REG_BASE; |
| 3774 | |
Lennert Buytenhek | 15a3263 | 2008-03-27 14:51:39 -0400 | [diff] [blame] | 3775 | /* |
| 3776 | * (Re-)program MBUS remapping windows if we are asked to. |
| 3777 | */ |
| 3778 | if (mv_platform_data->dram != NULL) |
| 3779 | mv_conf_mbus_windows(hpriv, mv_platform_data->dram); |
| 3780 | |
Byron Bradley | fbf14e2 | 2008-02-10 21:17:30 +0000 | [diff] [blame] | 3781 | rc = mv_create_dma_pools(hpriv, &pdev->dev); |
| 3782 | if (rc) |
| 3783 | return rc; |
| 3784 | |
Saeed Bishara | f351b2d | 2008-02-01 18:08:03 -0500 | [diff] [blame] | 3785 | /* initialize adapter */ |
| 3786 | rc = mv_init_host(host, chip_soc); |
| 3787 | if (rc) |
| 3788 | return rc; |
| 3789 | |
| 3790 | dev_printk(KERN_INFO, &pdev->dev, |
| 3791 | "slots %u ports %d\n", (unsigned)MV_MAX_Q_DEPTH, |
| 3792 | host->n_ports); |
| 3793 | |
| 3794 | return ata_host_activate(host, platform_get_irq(pdev, 0), mv_interrupt, |
| 3795 | IRQF_SHARED, &mv6_sht); |
| 3796 | } |
| 3797 | |
| 3798 | /* |
| 3799 | * |
| 3800 | * mv_platform_remove - unplug a platform interface |
| 3801 | * @pdev: platform device |
| 3802 | * |
| 3803 | * A platform bus SATA device has been unplugged. Perform the needed |
| 3804 | * cleanup. Also called on module unload for any active devices. |
| 3805 | */ |
| 3806 | static int __devexit mv_platform_remove(struct platform_device *pdev) |
| 3807 | { |
| 3808 | struct device *dev = &pdev->dev; |
| 3809 | struct ata_host *host = dev_get_drvdata(dev); |
Saeed Bishara | f351b2d | 2008-02-01 18:08:03 -0500 | [diff] [blame] | 3810 | |
| 3811 | ata_host_detach(host); |
Saeed Bishara | f351b2d | 2008-02-01 18:08:03 -0500 | [diff] [blame] | 3812 | return 0; |
| 3813 | } |
| 3814 | |
| 3815 | static struct platform_driver mv_platform_driver = { |
| 3816 | .probe = mv_platform_probe, |
| 3817 | .remove = __devexit_p(mv_platform_remove), |
| 3818 | .driver = { |
| 3819 | .name = DRV_NAME, |
| 3820 | .owner = THIS_MODULE, |
| 3821 | }, |
| 3822 | }; |
| 3823 | |
| 3824 | |
Saeed Bishara | 7bb3c52 | 2008-01-30 11:50:45 -1100 | [diff] [blame] | 3825 | #ifdef CONFIG_PCI |
Saeed Bishara | f351b2d | 2008-02-01 18:08:03 -0500 | [diff] [blame] | 3826 | static int mv_pci_init_one(struct pci_dev *pdev, |
| 3827 | const struct pci_device_id *ent); |
| 3828 | |
Saeed Bishara | 7bb3c52 | 2008-01-30 11:50:45 -1100 | [diff] [blame] | 3829 | |
| 3830 | static struct pci_driver mv_pci_driver = { |
| 3831 | .name = DRV_NAME, |
| 3832 | .id_table = mv_pci_tbl, |
Saeed Bishara | f351b2d | 2008-02-01 18:08:03 -0500 | [diff] [blame] | 3833 | .probe = mv_pci_init_one, |
Saeed Bishara | 7bb3c52 | 2008-01-30 11:50:45 -1100 | [diff] [blame] | 3834 | .remove = ata_pci_remove_one, |
| 3835 | }; |
| 3836 | |
Saeed Bishara | 7bb3c52 | 2008-01-30 11:50:45 -1100 | [diff] [blame] | 3837 | /* move to PCI layer or libata core? */ |
| 3838 | static int pci_go_64(struct pci_dev *pdev) |
| 3839 | { |
| 3840 | int rc; |
| 3841 | |
| 3842 | if (!pci_set_dma_mask(pdev, DMA_64BIT_MASK)) { |
| 3843 | rc = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK); |
| 3844 | if (rc) { |
| 3845 | rc = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK); |
| 3846 | if (rc) { |
| 3847 | dev_printk(KERN_ERR, &pdev->dev, |
| 3848 | "64-bit DMA enable failed\n"); |
| 3849 | return rc; |
| 3850 | } |
| 3851 | } |
| 3852 | } else { |
| 3853 | rc = pci_set_dma_mask(pdev, DMA_32BIT_MASK); |
| 3854 | if (rc) { |
| 3855 | dev_printk(KERN_ERR, &pdev->dev, |
| 3856 | "32-bit DMA enable failed\n"); |
| 3857 | return rc; |
| 3858 | } |
| 3859 | rc = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK); |
| 3860 | if (rc) { |
| 3861 | dev_printk(KERN_ERR, &pdev->dev, |
| 3862 | "32-bit consistent DMA enable failed\n"); |
| 3863 | return rc; |
| 3864 | } |
| 3865 | } |
| 3866 | |
| 3867 | return rc; |
| 3868 | } |
| 3869 | |
Brett Russ | 05b308e | 2005-10-05 17:08:53 -0400 | [diff] [blame] | 3870 | /** |
| 3871 | * mv_print_info - Dump key info to kernel log for perusal. |
Tejun Heo | 4447d35 | 2007-04-17 23:44:08 +0900 | [diff] [blame] | 3872 | * @host: ATA host to print info about |
Brett Russ | 05b308e | 2005-10-05 17:08:53 -0400 | [diff] [blame] | 3873 | * |
| 3874 | * FIXME: complete this. |
| 3875 | * |
| 3876 | * LOCKING: |
| 3877 | * Inherited from caller. |
| 3878 | */ |
Tejun Heo | 4447d35 | 2007-04-17 23:44:08 +0900 | [diff] [blame] | 3879 | static void mv_print_info(struct ata_host *host) |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 3880 | { |
Tejun Heo | 4447d35 | 2007-04-17 23:44:08 +0900 | [diff] [blame] | 3881 | struct pci_dev *pdev = to_pci_dev(host->dev); |
| 3882 | struct mv_host_priv *hpriv = host->private_data; |
Auke Kok | 44c1013 | 2007-06-08 15:46:36 -0700 | [diff] [blame] | 3883 | u8 scc; |
Jeff Garzik | c1e4fe7 | 2007-07-09 12:29:31 -0400 | [diff] [blame] | 3884 | const char *scc_s, *gen; |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 3885 | |
| 3886 | /* Use this to determine the HW stepping of the chip so we know |
| 3887 | * what errata to workaround |
| 3888 | */ |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 3889 | pci_read_config_byte(pdev, PCI_CLASS_DEVICE, &scc); |
| 3890 | if (scc == 0) |
| 3891 | scc_s = "SCSI"; |
| 3892 | else if (scc == 0x01) |
| 3893 | scc_s = "RAID"; |
| 3894 | else |
Jeff Garzik | c1e4fe7 | 2007-07-09 12:29:31 -0400 | [diff] [blame] | 3895 | scc_s = "?"; |
| 3896 | |
| 3897 | if (IS_GEN_I(hpriv)) |
| 3898 | gen = "I"; |
| 3899 | else if (IS_GEN_II(hpriv)) |
| 3900 | gen = "II"; |
| 3901 | else if (IS_GEN_IIE(hpriv)) |
| 3902 | gen = "IIE"; |
| 3903 | else |
| 3904 | gen = "?"; |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 3905 | |
Jeff Garzik | a9524a7 | 2005-10-30 14:39:11 -0500 | [diff] [blame] | 3906 | dev_printk(KERN_INFO, &pdev->dev, |
Jeff Garzik | c1e4fe7 | 2007-07-09 12:29:31 -0400 | [diff] [blame] | 3907 | "Gen-%s %u slots %u ports %s mode IRQ via %s\n", |
| 3908 | gen, (unsigned)MV_MAX_Q_DEPTH, host->n_ports, |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 3909 | scc_s, (MV_HP_FLAG_MSI & hpriv->hp_flags) ? "MSI" : "INTx"); |
| 3910 | } |
| 3911 | |
Brett Russ | 05b308e | 2005-10-05 17:08:53 -0400 | [diff] [blame] | 3912 | /** |
Saeed Bishara | f351b2d | 2008-02-01 18:08:03 -0500 | [diff] [blame] | 3913 | * mv_pci_init_one - handle a positive probe of a PCI Marvell host |
Brett Russ | 05b308e | 2005-10-05 17:08:53 -0400 | [diff] [blame] | 3914 | * @pdev: PCI device found |
| 3915 | * @ent: PCI device ID entry for the matched host |
| 3916 | * |
| 3917 | * LOCKING: |
| 3918 | * Inherited from caller. |
| 3919 | */ |
Saeed Bishara | f351b2d | 2008-02-01 18:08:03 -0500 | [diff] [blame] | 3920 | static int mv_pci_init_one(struct pci_dev *pdev, |
| 3921 | const struct pci_device_id *ent) |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 3922 | { |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 3923 | static int printed_version; |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 3924 | unsigned int board_idx = (unsigned int)ent->driver_data; |
Tejun Heo | 4447d35 | 2007-04-17 23:44:08 +0900 | [diff] [blame] | 3925 | const struct ata_port_info *ppi[] = { &mv_port_info[board_idx], NULL }; |
| 3926 | struct ata_host *host; |
| 3927 | struct mv_host_priv *hpriv; |
| 3928 | int n_ports, rc; |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 3929 | |
Jeff Garzik | a9524a7 | 2005-10-30 14:39:11 -0500 | [diff] [blame] | 3930 | if (!printed_version++) |
| 3931 | dev_printk(KERN_INFO, &pdev->dev, "version " DRV_VERSION "\n"); |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 3932 | |
Tejun Heo | 4447d35 | 2007-04-17 23:44:08 +0900 | [diff] [blame] | 3933 | /* allocate host */ |
| 3934 | n_ports = mv_get_hc_count(ppi[0]->flags) * MV_PORTS_PER_HC; |
| 3935 | |
| 3936 | host = ata_host_alloc_pinfo(&pdev->dev, ppi, n_ports); |
| 3937 | hpriv = devm_kzalloc(&pdev->dev, sizeof(*hpriv), GFP_KERNEL); |
| 3938 | if (!host || !hpriv) |
| 3939 | return -ENOMEM; |
| 3940 | host->private_data = hpriv; |
Saeed Bishara | f351b2d | 2008-02-01 18:08:03 -0500 | [diff] [blame] | 3941 | hpriv->n_ports = n_ports; |
Tejun Heo | 4447d35 | 2007-04-17 23:44:08 +0900 | [diff] [blame] | 3942 | |
| 3943 | /* acquire resources */ |
Tejun Heo | 24dc5f3 | 2007-01-20 16:00:28 +0900 | [diff] [blame] | 3944 | rc = pcim_enable_device(pdev); |
| 3945 | if (rc) |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 3946 | return rc; |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 3947 | |
Tejun Heo | 0d5ff56 | 2007-02-01 15:06:36 +0900 | [diff] [blame] | 3948 | rc = pcim_iomap_regions(pdev, 1 << MV_PRIMARY_BAR, DRV_NAME); |
| 3949 | if (rc == -EBUSY) |
Tejun Heo | 24dc5f3 | 2007-01-20 16:00:28 +0900 | [diff] [blame] | 3950 | pcim_pin_device(pdev); |
Tejun Heo | 0d5ff56 | 2007-02-01 15:06:36 +0900 | [diff] [blame] | 3951 | if (rc) |
Tejun Heo | 24dc5f3 | 2007-01-20 16:00:28 +0900 | [diff] [blame] | 3952 | return rc; |
Tejun Heo | 4447d35 | 2007-04-17 23:44:08 +0900 | [diff] [blame] | 3953 | host->iomap = pcim_iomap_table(pdev); |
Saeed Bishara | f351b2d | 2008-02-01 18:08:03 -0500 | [diff] [blame] | 3954 | hpriv->base = host->iomap[MV_PRIMARY_BAR]; |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 3955 | |
Jeff Garzik | d88184f | 2007-02-26 01:26:06 -0500 | [diff] [blame] | 3956 | rc = pci_go_64(pdev); |
| 3957 | if (rc) |
| 3958 | return rc; |
| 3959 | |
Mark Lord | da2fa9b | 2008-01-26 18:32:45 -0500 | [diff] [blame] | 3960 | rc = mv_create_dma_pools(hpriv, &pdev->dev); |
| 3961 | if (rc) |
| 3962 | return rc; |
| 3963 | |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 3964 | /* initialize adapter */ |
Tejun Heo | 4447d35 | 2007-04-17 23:44:08 +0900 | [diff] [blame] | 3965 | rc = mv_init_host(host, board_idx); |
Tejun Heo | 24dc5f3 | 2007-01-20 16:00:28 +0900 | [diff] [blame] | 3966 | if (rc) |
| 3967 | return rc; |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 3968 | |
Mark Lord | 6d3c30e | 2009-01-21 10:31:29 -0500 | [diff] [blame] | 3969 | /* Enable message-switched interrupts, if requested */ |
| 3970 | if (msi && pci_enable_msi(pdev) == 0) |
| 3971 | hpriv->hp_flags |= MV_HP_FLAG_MSI; |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 3972 | |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 3973 | mv_dump_pci_cfg(pdev, 0x68); |
Tejun Heo | 4447d35 | 2007-04-17 23:44:08 +0900 | [diff] [blame] | 3974 | mv_print_info(host); |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 3975 | |
Tejun Heo | 4447d35 | 2007-04-17 23:44:08 +0900 | [diff] [blame] | 3976 | pci_set_master(pdev); |
Jeff Garzik | ea8b4db | 2007-07-17 02:21:50 -0400 | [diff] [blame] | 3977 | pci_try_set_mwi(pdev); |
Tejun Heo | 4447d35 | 2007-04-17 23:44:08 +0900 | [diff] [blame] | 3978 | return ata_host_activate(host, pdev->irq, mv_interrupt, IRQF_SHARED, |
Jeff Garzik | c5d3e45 | 2007-07-11 18:30:50 -0400 | [diff] [blame] | 3979 | IS_GEN_I(hpriv) ? &mv5_sht : &mv6_sht); |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 3980 | } |
Saeed Bishara | 7bb3c52 | 2008-01-30 11:50:45 -1100 | [diff] [blame] | 3981 | #endif |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 3982 | |
Saeed Bishara | f351b2d | 2008-02-01 18:08:03 -0500 | [diff] [blame] | 3983 | static int mv_platform_probe(struct platform_device *pdev); |
| 3984 | static int __devexit mv_platform_remove(struct platform_device *pdev); |
| 3985 | |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 3986 | static int __init mv_init(void) |
| 3987 | { |
Saeed Bishara | 7bb3c52 | 2008-01-30 11:50:45 -1100 | [diff] [blame] | 3988 | int rc = -ENODEV; |
| 3989 | #ifdef CONFIG_PCI |
| 3990 | rc = pci_register_driver(&mv_pci_driver); |
Saeed Bishara | f351b2d | 2008-02-01 18:08:03 -0500 | [diff] [blame] | 3991 | if (rc < 0) |
| 3992 | return rc; |
| 3993 | #endif |
| 3994 | rc = platform_driver_register(&mv_platform_driver); |
| 3995 | |
| 3996 | #ifdef CONFIG_PCI |
| 3997 | if (rc < 0) |
| 3998 | pci_unregister_driver(&mv_pci_driver); |
Saeed Bishara | 7bb3c52 | 2008-01-30 11:50:45 -1100 | [diff] [blame] | 3999 | #endif |
| 4000 | return rc; |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 4001 | } |
| 4002 | |
| 4003 | static void __exit mv_exit(void) |
| 4004 | { |
Saeed Bishara | 7bb3c52 | 2008-01-30 11:50:45 -1100 | [diff] [blame] | 4005 | #ifdef CONFIG_PCI |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 4006 | pci_unregister_driver(&mv_pci_driver); |
Saeed Bishara | 7bb3c52 | 2008-01-30 11:50:45 -1100 | [diff] [blame] | 4007 | #endif |
Saeed Bishara | f351b2d | 2008-02-01 18:08:03 -0500 | [diff] [blame] | 4008 | platform_driver_unregister(&mv_platform_driver); |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 4009 | } |
| 4010 | |
| 4011 | MODULE_AUTHOR("Brett Russ"); |
| 4012 | MODULE_DESCRIPTION("SCSI low-level driver for Marvell SATA controllers"); |
| 4013 | MODULE_LICENSE("GPL"); |
| 4014 | MODULE_DEVICE_TABLE(pci, mv_pci_tbl); |
| 4015 | MODULE_VERSION(DRV_VERSION); |
Mark Lord | 17c5aab | 2008-04-16 14:56:51 -0400 | [diff] [blame] | 4016 | MODULE_ALIAS("platform:" DRV_NAME); |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 4017 | |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 4018 | module_init(mv_init); |
| 4019 | module_exit(mv_exit); |