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 | * |
| 37 | * --> [Experiment, low priority] Investigate interrupt coalescing. |
| 38 | * Quite often, especially with PCI Message Signalled Interrupts (MSI), |
| 39 | * the overhead reduced by interrupt mitigation is quite often not |
| 40 | * worth the latency cost. |
| 41 | * |
| 42 | * --> [Experiment, Marvell value added] Is it possible to use target |
| 43 | * mode to cross-connect two Linux boxes with Marvell cards? If so, |
| 44 | * creating LibATA target mode support would be very interesting. |
| 45 | * |
| 46 | * Target mode, for those without docs, is the ability to directly |
| 47 | * connect two SATA ports. |
| 48 | */ |
Jeff Garzik | 4a05e20 | 2007-05-24 23:40:15 -0400 | [diff] [blame] | 49 | |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 50 | #include <linux/kernel.h> |
| 51 | #include <linux/module.h> |
| 52 | #include <linux/pci.h> |
| 53 | #include <linux/init.h> |
| 54 | #include <linux/blkdev.h> |
| 55 | #include <linux/delay.h> |
| 56 | #include <linux/interrupt.h> |
Andrew Morton | 8d8b600 | 2008-02-04 23:43:44 -0800 | [diff] [blame] | 57 | #include <linux/dmapool.h> |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 58 | #include <linux/dma-mapping.h> |
Jeff Garzik | a9524a7 | 2005-10-30 14:39:11 -0500 | [diff] [blame] | 59 | #include <linux/device.h> |
Saeed Bishara | f351b2d | 2008-02-01 18:08:03 -0500 | [diff] [blame] | 60 | #include <linux/platform_device.h> |
| 61 | #include <linux/ata_platform.h> |
Lennert Buytenhek | 15a3263 | 2008-03-27 14:51:39 -0400 | [diff] [blame] | 62 | #include <linux/mbus.h> |
Mark Lord | c46938c | 2008-05-02 14:02:28 -0400 | [diff] [blame] | 63 | #include <linux/bitops.h> |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 64 | #include <scsi/scsi_host.h> |
Jeff Garzik | 193515d | 2005-11-07 00:59:37 -0500 | [diff] [blame] | 65 | #include <scsi/scsi_cmnd.h> |
Jeff Garzik | 6c08772 | 2007-10-12 00:16:23 -0400 | [diff] [blame] | 66 | #include <scsi/scsi_device.h> |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 67 | #include <linux/libata.h> |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 68 | |
| 69 | #define DRV_NAME "sata_mv" |
Mark Lord | da14265 | 2009-01-30 18:51:54 -0500 | [diff] [blame] | 70 | #define DRV_VERSION "1.26" |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 71 | |
Mark Lord | 40f21b1 | 2009-03-10 18:51:04 -0400 | [diff] [blame^] | 72 | /* |
| 73 | * module options |
| 74 | */ |
| 75 | |
| 76 | static int msi; |
| 77 | #ifdef CONFIG_PCI |
| 78 | module_param(msi, int, S_IRUGO); |
| 79 | MODULE_PARM_DESC(msi, "Enable use of PCI MSI (0=off, 1=on)"); |
| 80 | #endif |
| 81 | |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 82 | enum { |
| 83 | /* BAR's are enumerated in terms of pci_resource_start() terms */ |
| 84 | MV_PRIMARY_BAR = 0, /* offset 0x10: memory space */ |
| 85 | MV_IO_BAR = 2, /* offset 0x18: IO space */ |
| 86 | MV_MISC_BAR = 3, /* offset 0x1c: FLASH, NVRAM, SRAM */ |
| 87 | |
| 88 | MV_MAJOR_REG_AREA_SZ = 0x10000, /* 64KB */ |
| 89 | MV_MINOR_REG_AREA_SZ = 0x2000, /* 8KB */ |
| 90 | |
| 91 | MV_PCI_REG_BASE = 0, |
Mark Lord | 615ab95 | 2006-05-19 16:24:56 -0400 | [diff] [blame] | 92 | |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 93 | MV_SATAHC0_REG_BASE = 0x20000, |
Mark Lord | 8e7decd | 2008-05-02 02:07:51 -0400 | [diff] [blame] | 94 | MV_FLASH_CTL_OFS = 0x1046c, |
| 95 | MV_GPIO_PORT_CTL_OFS = 0x104f0, |
| 96 | MV_RESET_CFG_OFS = 0x180d8, |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 97 | |
| 98 | MV_PCI_REG_SZ = MV_MAJOR_REG_AREA_SZ, |
| 99 | MV_SATAHC_REG_SZ = MV_MAJOR_REG_AREA_SZ, |
| 100 | MV_SATAHC_ARBTR_REG_SZ = MV_MINOR_REG_AREA_SZ, /* arbiter */ |
| 101 | MV_PORT_REG_SZ = MV_MINOR_REG_AREA_SZ, |
| 102 | |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 103 | MV_MAX_Q_DEPTH = 32, |
| 104 | MV_MAX_Q_DEPTH_MASK = MV_MAX_Q_DEPTH - 1, |
| 105 | |
| 106 | /* CRQB needs alignment on a 1KB boundary. Size == 1KB |
| 107 | * CRPB needs alignment on a 256B boundary. Size == 256B |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 108 | * ePRD (SG) entries need alignment on a 16B boundary. Size == 16B |
| 109 | */ |
| 110 | MV_CRQB_Q_SZ = (32 * MV_MAX_Q_DEPTH), |
| 111 | MV_CRPB_Q_SZ = (8 * MV_MAX_Q_DEPTH), |
Mark Lord | da2fa9b | 2008-01-26 18:32:45 -0500 | [diff] [blame] | 112 | MV_MAX_SG_CT = 256, |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 113 | MV_SG_TBL_SZ = (16 * MV_MAX_SG_CT), |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 114 | |
Mark Lord | 352fab7 | 2008-04-19 14:43:42 -0400 | [diff] [blame] | 115 | /* Determine hc from 0-7 port: hc = port >> MV_PORT_HC_SHIFT */ |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 116 | MV_PORT_HC_SHIFT = 2, |
Mark Lord | 352fab7 | 2008-04-19 14:43:42 -0400 | [diff] [blame] | 117 | MV_PORTS_PER_HC = (1 << MV_PORT_HC_SHIFT), /* 4 */ |
| 118 | /* Determine hc port from 0-7 port: hardport = port & MV_PORT_MASK */ |
| 119 | MV_PORT_MASK = (MV_PORTS_PER_HC - 1), /* 3 */ |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 120 | |
| 121 | /* Host Flags */ |
| 122 | MV_FLAG_DUAL_HC = (1 << 30), /* two SATA Host Controllers */ |
Saeed Bishara | 7bb3c52 | 2008-01-30 11:50:45 -1100 | [diff] [blame] | 123 | |
Jeff Garzik | c5d3e45 | 2007-07-11 18:30:50 -0400 | [diff] [blame] | 124 | MV_COMMON_FLAGS = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY | |
Mark Lord | 91b1a84 | 2009-01-30 18:46:39 -0500 | [diff] [blame] | 125 | ATA_FLAG_MMIO | ATA_FLAG_PIO_POLLING, |
Mark Lord | ad3aef5 | 2008-05-14 09:21:43 -0400 | [diff] [blame] | 126 | |
Mark Lord | 91b1a84 | 2009-01-30 18:46:39 -0500 | [diff] [blame] | 127 | MV_GEN_I_FLAGS = MV_COMMON_FLAGS | ATA_FLAG_NO_ATAPI, |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 128 | |
Mark Lord | 40f21b1 | 2009-03-10 18:51:04 -0400 | [diff] [blame^] | 129 | MV_GEN_II_FLAGS = MV_COMMON_FLAGS | ATA_FLAG_NCQ | |
| 130 | ATA_FLAG_PMP | ATA_FLAG_ACPI_SATA, |
Mark Lord | 91b1a84 | 2009-01-30 18:46:39 -0500 | [diff] [blame] | 131 | |
| 132 | MV_GEN_IIE_FLAGS = MV_GEN_II_FLAGS | ATA_FLAG_AN, |
Mark Lord | ad3aef5 | 2008-05-14 09:21:43 -0400 | [diff] [blame] | 133 | |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 134 | CRQB_FLAG_READ = (1 << 0), |
| 135 | CRQB_TAG_SHIFT = 1, |
Jeff Garzik | c5d3e45 | 2007-07-11 18:30:50 -0400 | [diff] [blame] | 136 | CRQB_IOID_SHIFT = 6, /* CRQB Gen-II/IIE IO Id shift */ |
Mark Lord | e12bef5 | 2008-03-31 19:33:56 -0400 | [diff] [blame] | 137 | CRQB_PMP_SHIFT = 12, /* CRQB Gen-II/IIE PMP shift */ |
Jeff Garzik | c5d3e45 | 2007-07-11 18:30:50 -0400 | [diff] [blame] | 138 | CRQB_HOSTQ_SHIFT = 17, /* CRQB Gen-II/IIE HostQueTag shift */ |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 139 | CRQB_CMD_ADDR_SHIFT = 8, |
| 140 | CRQB_CMD_CS = (0x2 << 11), |
| 141 | CRQB_CMD_LAST = (1 << 15), |
| 142 | |
| 143 | CRPB_FLAG_STATUS_SHIFT = 8, |
Jeff Garzik | c5d3e45 | 2007-07-11 18:30:50 -0400 | [diff] [blame] | 144 | CRPB_IOID_SHIFT_6 = 5, /* CRPB Gen-II IO Id shift */ |
| 145 | CRPB_IOID_SHIFT_7 = 7, /* CRPB Gen-IIE IO Id shift */ |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 146 | |
| 147 | EPRD_FLAG_END_OF_TBL = (1 << 31), |
| 148 | |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 149 | /* PCI interface registers */ |
| 150 | |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 151 | PCI_COMMAND_OFS = 0xc00, |
Mark Lord | 8e7decd | 2008-05-02 02:07:51 -0400 | [diff] [blame] | 152 | PCI_COMMAND_MRDTRIG = (1 << 7), /* PCI Master Read Trigger */ |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 153 | |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 154 | PCI_MAIN_CMD_STS_OFS = 0xd30, |
| 155 | STOP_PCI_MASTER = (1 << 2), |
| 156 | PCI_MASTER_EMPTY = (1 << 3), |
| 157 | GLOB_SFT_RST = (1 << 4), |
| 158 | |
Mark Lord | 8e7decd | 2008-05-02 02:07:51 -0400 | [diff] [blame] | 159 | MV_PCI_MODE_OFS = 0xd00, |
| 160 | MV_PCI_MODE_MASK = 0x30, |
| 161 | |
Jeff Garzik | 522479f | 2005-11-12 22:14:02 -0500 | [diff] [blame] | 162 | MV_PCI_EXP_ROM_BAR_CTL = 0xd2c, |
| 163 | MV_PCI_DISC_TIMER = 0xd04, |
| 164 | MV_PCI_MSI_TRIGGER = 0xc38, |
| 165 | MV_PCI_SERR_MASK = 0xc28, |
Mark Lord | 8e7decd | 2008-05-02 02:07:51 -0400 | [diff] [blame] | 166 | MV_PCI_XBAR_TMOUT_OFS = 0x1d04, |
Jeff Garzik | 522479f | 2005-11-12 22:14:02 -0500 | [diff] [blame] | 167 | MV_PCI_ERR_LOW_ADDRESS = 0x1d40, |
| 168 | MV_PCI_ERR_HIGH_ADDRESS = 0x1d44, |
| 169 | MV_PCI_ERR_ATTRIBUTE = 0x1d48, |
| 170 | MV_PCI_ERR_COMMAND = 0x1d50, |
| 171 | |
Mark Lord | 02a121d | 2007-12-01 13:07:22 -0500 | [diff] [blame] | 172 | PCI_IRQ_CAUSE_OFS = 0x1d58, |
| 173 | PCI_IRQ_MASK_OFS = 0x1d5c, |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 174 | PCI_UNMASK_ALL_IRQS = 0x7fffff, /* bits 22-0 */ |
| 175 | |
Mark Lord | 02a121d | 2007-12-01 13:07:22 -0500 | [diff] [blame] | 176 | PCIE_IRQ_CAUSE_OFS = 0x1900, |
| 177 | PCIE_IRQ_MASK_OFS = 0x1910, |
Mark Lord | 646a4da | 2008-01-26 18:30:37 -0500 | [diff] [blame] | 178 | PCIE_UNMASK_ALL_IRQS = 0x40a, /* assorted bits */ |
Mark Lord | 02a121d | 2007-12-01 13:07:22 -0500 | [diff] [blame] | 179 | |
Mark Lord | 7368f91 | 2008-04-25 11:24:24 -0400 | [diff] [blame] | 180 | /* Host Controller Main Interrupt Cause/Mask registers (1 per-chip) */ |
| 181 | PCI_HC_MAIN_IRQ_CAUSE_OFS = 0x1d60, |
| 182 | PCI_HC_MAIN_IRQ_MASK_OFS = 0x1d64, |
| 183 | SOC_HC_MAIN_IRQ_CAUSE_OFS = 0x20020, |
| 184 | SOC_HC_MAIN_IRQ_MASK_OFS = 0x20024, |
Mark Lord | 40f21b1 | 2009-03-10 18:51:04 -0400 | [diff] [blame^] | 185 | ERR_IRQ = (1 << 0), /* shift by (2 * port #) */ |
| 186 | DONE_IRQ = (1 << 1), /* shift by (2 * port #) */ |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 187 | HC0_IRQ_PEND = 0x1ff, /* bits 0-8 = HC0's ports */ |
| 188 | HC_SHIFT = 9, /* bits 9-17 = HC1's ports */ |
| 189 | PCI_ERR = (1 << 18), |
Mark Lord | 40f21b1 | 2009-03-10 18:51:04 -0400 | [diff] [blame^] | 190 | TRAN_COAL_LO_DONE = (1 << 19), /* transaction coalescing */ |
| 191 | TRAN_COAL_HI_DONE = (1 << 20), /* transaction coalescing */ |
| 192 | PORTS_0_3_COAL_DONE = (1 << 8), /* HC0 IRQ coalescing */ |
| 193 | PORTS_4_7_COAL_DONE = (1 << 17), /* HC1 IRQ coalescing */ |
| 194 | ALL_PORTS_COAL_DONE = (1 << 21), /* GEN_II(E) IRQ coalescing */ |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 195 | GPIO_INT = (1 << 22), |
| 196 | SELF_INT = (1 << 23), |
| 197 | TWSI_INT = (1 << 24), |
| 198 | HC_MAIN_RSVD = (0x7f << 25), /* bits 31-25 */ |
Jeff Garzik | fb621e2 | 2007-02-25 04:19:45 -0500 | [diff] [blame] | 199 | HC_MAIN_RSVD_5 = (0x1fff << 19), /* bits 31-19 */ |
Mark Lord | e12bef5 | 2008-03-31 19:33:56 -0400 | [diff] [blame] | 200 | HC_MAIN_RSVD_SOC = (0x3fffffb << 6), /* bits 31-9, 7-6 */ |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 201 | |
| 202 | /* SATAHC registers */ |
| 203 | HC_CFG_OFS = 0, |
| 204 | |
| 205 | HC_IRQ_CAUSE_OFS = 0x14, |
Mark Lord | 352fab7 | 2008-04-19 14:43:42 -0400 | [diff] [blame] | 206 | DMA_IRQ = (1 << 0), /* shift by port # */ |
| 207 | HC_COAL_IRQ = (1 << 4), /* IRQ coalescing */ |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 208 | DEV_IRQ = (1 << 8), /* shift by port # */ |
| 209 | |
| 210 | /* Shadow block registers */ |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 211 | SHD_BLK_OFS = 0x100, |
| 212 | SHD_CTL_AST_OFS = 0x20, /* ofs from SHD_BLK_OFS */ |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 213 | |
| 214 | /* SATA registers */ |
| 215 | SATA_STATUS_OFS = 0x300, /* ctrl, err regs follow status */ |
| 216 | SATA_ACTIVE_OFS = 0x350, |
Mark Lord | 0c58912 | 2008-01-26 18:31:16 -0500 | [diff] [blame] | 217 | SATA_FIS_IRQ_CAUSE_OFS = 0x364, |
Mark Lord | c443c50 | 2008-05-14 09:24:39 -0400 | [diff] [blame] | 218 | SATA_FIS_IRQ_AN = (1 << 9), /* async notification */ |
Mark Lord | 17c5aab | 2008-04-16 14:56:51 -0400 | [diff] [blame] | 219 | |
Mark Lord | e12bef5 | 2008-03-31 19:33:56 -0400 | [diff] [blame] | 220 | LTMODE_OFS = 0x30c, |
Mark Lord | 17c5aab | 2008-04-16 14:56:51 -0400 | [diff] [blame] | 221 | LTMODE_BIT8 = (1 << 8), /* unknown, but necessary */ |
| 222 | |
Jeff Garzik | 47c2b67 | 2005-11-12 21:13:17 -0500 | [diff] [blame] | 223 | PHY_MODE3 = 0x310, |
Jeff Garzik | bca1c4e | 2005-11-12 12:48:15 -0500 | [diff] [blame] | 224 | PHY_MODE4 = 0x314, |
Mark Lord | ba069e3 | 2008-05-31 16:46:34 -0400 | [diff] [blame] | 225 | PHY_MODE4_CFG_MASK = 0x00000003, /* phy internal config field */ |
| 226 | PHY_MODE4_CFG_VALUE = 0x00000001, /* phy internal config field */ |
| 227 | PHY_MODE4_RSVD_ZEROS = 0x5de3fffa, /* Gen2e always write zeros */ |
| 228 | PHY_MODE4_RSVD_ONES = 0x00000005, /* Gen2e always write ones */ |
| 229 | |
Jeff Garzik | bca1c4e | 2005-11-12 12:48:15 -0500 | [diff] [blame] | 230 | PHY_MODE2 = 0x330, |
Mark Lord | e12bef5 | 2008-03-31 19:33:56 -0400 | [diff] [blame] | 231 | SATA_IFCTL_OFS = 0x344, |
Mark Lord | 8e7decd | 2008-05-02 02:07:51 -0400 | [diff] [blame] | 232 | SATA_TESTCTL_OFS = 0x348, |
Mark Lord | e12bef5 | 2008-03-31 19:33:56 -0400 | [diff] [blame] | 233 | SATA_IFSTAT_OFS = 0x34c, |
| 234 | VENDOR_UNIQUE_FIS_OFS = 0x35c, |
Mark Lord | 17c5aab | 2008-04-16 14:56:51 -0400 | [diff] [blame] | 235 | |
Mark Lord | 8e7decd | 2008-05-02 02:07:51 -0400 | [diff] [blame] | 236 | FISCFG_OFS = 0x360, |
| 237 | FISCFG_WAIT_DEV_ERR = (1 << 8), /* wait for host on DevErr */ |
| 238 | FISCFG_SINGLE_SYNC = (1 << 16), /* SYNC on DMA activation */ |
Mark Lord | 17c5aab | 2008-04-16 14:56:51 -0400 | [diff] [blame] | 239 | |
Jeff Garzik | c9d3913 | 2005-11-13 17:47:51 -0500 | [diff] [blame] | 240 | MV5_PHY_MODE = 0x74, |
Mark Lord | 8e7decd | 2008-05-02 02:07:51 -0400 | [diff] [blame] | 241 | MV5_LTMODE_OFS = 0x30, |
| 242 | MV5_PHY_CTL_OFS = 0x0C, |
| 243 | SATA_INTERFACE_CFG_OFS = 0x050, |
Jeff Garzik | bca1c4e | 2005-11-12 12:48:15 -0500 | [diff] [blame] | 244 | |
| 245 | MV_M2_PREAMP_MASK = 0x7e0, |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 246 | |
| 247 | /* Port registers */ |
| 248 | EDMA_CFG_OFS = 0, |
Mark Lord | 0c58912 | 2008-01-26 18:31:16 -0500 | [diff] [blame] | 249 | EDMA_CFG_Q_DEPTH = 0x1f, /* max device queue depth */ |
| 250 | EDMA_CFG_NCQ = (1 << 5), /* for R/W FPDMA queued */ |
| 251 | EDMA_CFG_NCQ_GO_ON_ERR = (1 << 14), /* continue on error */ |
| 252 | EDMA_CFG_RD_BRST_EXT = (1 << 11), /* read burst 512B */ |
| 253 | EDMA_CFG_WR_BUFF_LEN = (1 << 13), /* write buffer 512B */ |
Mark Lord | e12bef5 | 2008-03-31 19:33:56 -0400 | [diff] [blame] | 254 | EDMA_CFG_EDMA_FBS = (1 << 16), /* EDMA FIS-Based Switching */ |
| 255 | EDMA_CFG_FBS = (1 << 26), /* FIS-Based Switching */ |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 256 | |
| 257 | EDMA_ERR_IRQ_CAUSE_OFS = 0x8, |
| 258 | EDMA_ERR_IRQ_MASK_OFS = 0xc, |
Jeff Garzik | 6c1153e | 2007-07-13 15:20:15 -0400 | [diff] [blame] | 259 | EDMA_ERR_D_PAR = (1 << 0), /* UDMA data parity err */ |
| 260 | EDMA_ERR_PRD_PAR = (1 << 1), /* UDMA PRD parity err */ |
| 261 | EDMA_ERR_DEV = (1 << 2), /* device error */ |
| 262 | EDMA_ERR_DEV_DCON = (1 << 3), /* device disconnect */ |
| 263 | EDMA_ERR_DEV_CON = (1 << 4), /* device connected */ |
| 264 | EDMA_ERR_SERR = (1 << 5), /* SError bits [WBDST] raised */ |
Jeff Garzik | c5d3e45 | 2007-07-11 18:30:50 -0400 | [diff] [blame] | 265 | EDMA_ERR_SELF_DIS = (1 << 7), /* Gen II/IIE self-disable */ |
| 266 | EDMA_ERR_SELF_DIS_5 = (1 << 8), /* Gen I self-disable */ |
Jeff Garzik | 6c1153e | 2007-07-13 15:20:15 -0400 | [diff] [blame] | 267 | EDMA_ERR_BIST_ASYNC = (1 << 8), /* BIST FIS or Async Notify */ |
Jeff Garzik | c5d3e45 | 2007-07-11 18:30:50 -0400 | [diff] [blame] | 268 | EDMA_ERR_TRANS_IRQ_7 = (1 << 8), /* Gen IIE transprt layer irq */ |
Jeff Garzik | 6c1153e | 2007-07-13 15:20:15 -0400 | [diff] [blame] | 269 | EDMA_ERR_CRQB_PAR = (1 << 9), /* CRQB parity error */ |
| 270 | EDMA_ERR_CRPB_PAR = (1 << 10), /* CRPB parity error */ |
| 271 | EDMA_ERR_INTRL_PAR = (1 << 11), /* internal parity error */ |
| 272 | EDMA_ERR_IORDY = (1 << 12), /* IORdy timeout */ |
Mark Lord | 646a4da | 2008-01-26 18:30:37 -0500 | [diff] [blame] | 273 | |
Jeff Garzik | 6c1153e | 2007-07-13 15:20:15 -0400 | [diff] [blame] | 274 | EDMA_ERR_LNK_CTRL_RX = (0xf << 13), /* link ctrl rx error */ |
Mark Lord | 646a4da | 2008-01-26 18:30:37 -0500 | [diff] [blame] | 275 | EDMA_ERR_LNK_CTRL_RX_0 = (1 << 13), /* transient: CRC err */ |
| 276 | EDMA_ERR_LNK_CTRL_RX_1 = (1 << 14), /* transient: FIFO err */ |
| 277 | EDMA_ERR_LNK_CTRL_RX_2 = (1 << 15), /* fatal: caught SYNC */ |
| 278 | EDMA_ERR_LNK_CTRL_RX_3 = (1 << 16), /* transient: FIS rx err */ |
| 279 | |
Jeff Garzik | 6c1153e | 2007-07-13 15:20:15 -0400 | [diff] [blame] | 280 | EDMA_ERR_LNK_DATA_RX = (0xf << 17), /* link data rx error */ |
Mark Lord | 646a4da | 2008-01-26 18:30:37 -0500 | [diff] [blame] | 281 | |
Jeff Garzik | 6c1153e | 2007-07-13 15:20:15 -0400 | [diff] [blame] | 282 | EDMA_ERR_LNK_CTRL_TX = (0x1f << 21), /* link ctrl tx error */ |
Mark Lord | 646a4da | 2008-01-26 18:30:37 -0500 | [diff] [blame] | 283 | EDMA_ERR_LNK_CTRL_TX_0 = (1 << 21), /* transient: CRC err */ |
| 284 | EDMA_ERR_LNK_CTRL_TX_1 = (1 << 22), /* transient: FIFO err */ |
| 285 | EDMA_ERR_LNK_CTRL_TX_2 = (1 << 23), /* transient: caught SYNC */ |
| 286 | EDMA_ERR_LNK_CTRL_TX_3 = (1 << 24), /* transient: caught DMAT */ |
| 287 | EDMA_ERR_LNK_CTRL_TX_4 = (1 << 25), /* transient: FIS collision */ |
| 288 | |
Jeff Garzik | 6c1153e | 2007-07-13 15:20:15 -0400 | [diff] [blame] | 289 | EDMA_ERR_LNK_DATA_TX = (0x1f << 26), /* link data tx error */ |
Mark Lord | 646a4da | 2008-01-26 18:30:37 -0500 | [diff] [blame] | 290 | |
Jeff Garzik | 6c1153e | 2007-07-13 15:20:15 -0400 | [diff] [blame] | 291 | EDMA_ERR_TRANS_PROTO = (1 << 31), /* transport protocol error */ |
Jeff Garzik | c5d3e45 | 2007-07-11 18:30:50 -0400 | [diff] [blame] | 292 | EDMA_ERR_OVERRUN_5 = (1 << 5), |
| 293 | EDMA_ERR_UNDERRUN_5 = (1 << 6), |
Mark Lord | 646a4da | 2008-01-26 18:30:37 -0500 | [diff] [blame] | 294 | |
| 295 | EDMA_ERR_IRQ_TRANSIENT = EDMA_ERR_LNK_CTRL_RX_0 | |
| 296 | EDMA_ERR_LNK_CTRL_RX_1 | |
| 297 | EDMA_ERR_LNK_CTRL_RX_3 | |
Mark Lord | 85afb93 | 2008-04-19 14:54:41 -0400 | [diff] [blame] | 298 | EDMA_ERR_LNK_CTRL_TX, |
Mark Lord | 646a4da | 2008-01-26 18:30:37 -0500 | [diff] [blame] | 299 | |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 300 | EDMA_EH_FREEZE = EDMA_ERR_D_PAR | |
| 301 | EDMA_ERR_PRD_PAR | |
| 302 | EDMA_ERR_DEV_DCON | |
| 303 | EDMA_ERR_DEV_CON | |
| 304 | EDMA_ERR_SERR | |
| 305 | EDMA_ERR_SELF_DIS | |
Jeff Garzik | 6c1153e | 2007-07-13 15:20:15 -0400 | [diff] [blame] | 306 | EDMA_ERR_CRQB_PAR | |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 307 | EDMA_ERR_CRPB_PAR | |
| 308 | EDMA_ERR_INTRL_PAR | |
| 309 | EDMA_ERR_IORDY | |
| 310 | EDMA_ERR_LNK_CTRL_RX_2 | |
| 311 | EDMA_ERR_LNK_DATA_RX | |
| 312 | EDMA_ERR_LNK_DATA_TX | |
| 313 | EDMA_ERR_TRANS_PROTO, |
Mark Lord | e12bef5 | 2008-03-31 19:33:56 -0400 | [diff] [blame] | 314 | |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 315 | EDMA_EH_FREEZE_5 = EDMA_ERR_D_PAR | |
| 316 | EDMA_ERR_PRD_PAR | |
| 317 | EDMA_ERR_DEV_DCON | |
| 318 | EDMA_ERR_DEV_CON | |
| 319 | EDMA_ERR_OVERRUN_5 | |
| 320 | EDMA_ERR_UNDERRUN_5 | |
| 321 | EDMA_ERR_SELF_DIS_5 | |
Jeff Garzik | 6c1153e | 2007-07-13 15:20:15 -0400 | [diff] [blame] | 322 | EDMA_ERR_CRQB_PAR | |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 323 | EDMA_ERR_CRPB_PAR | |
| 324 | EDMA_ERR_INTRL_PAR | |
| 325 | EDMA_ERR_IORDY, |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 326 | |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 327 | EDMA_REQ_Q_BASE_HI_OFS = 0x10, |
| 328 | EDMA_REQ_Q_IN_PTR_OFS = 0x14, /* also contains BASE_LO */ |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 329 | |
| 330 | EDMA_REQ_Q_OUT_PTR_OFS = 0x18, |
| 331 | EDMA_REQ_Q_PTR_SHIFT = 5, |
| 332 | |
| 333 | EDMA_RSP_Q_BASE_HI_OFS = 0x1c, |
| 334 | EDMA_RSP_Q_IN_PTR_OFS = 0x20, |
| 335 | EDMA_RSP_Q_OUT_PTR_OFS = 0x24, /* also contains BASE_LO */ |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 336 | EDMA_RSP_Q_PTR_SHIFT = 3, |
| 337 | |
Jeff Garzik | 0ea9e17 | 2007-07-13 17:06:45 -0400 | [diff] [blame] | 338 | EDMA_CMD_OFS = 0x28, /* EDMA command register */ |
| 339 | EDMA_EN = (1 << 0), /* enable EDMA */ |
| 340 | EDMA_DS = (1 << 1), /* disable EDMA; self-negated */ |
Mark Lord | 8e7decd | 2008-05-02 02:07:51 -0400 | [diff] [blame] | 341 | EDMA_RESET = (1 << 2), /* reset eng/trans/link/phy */ |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 342 | |
Mark Lord | 8e7decd | 2008-05-02 02:07:51 -0400 | [diff] [blame] | 343 | EDMA_STATUS_OFS = 0x30, /* EDMA engine status */ |
| 344 | EDMA_STATUS_CACHE_EMPTY = (1 << 6), /* GenIIe command cache empty */ |
| 345 | EDMA_STATUS_IDLE = (1 << 7), /* GenIIe EDMA enabled/idle */ |
| 346 | |
| 347 | EDMA_IORDY_TMOUT_OFS = 0x34, |
| 348 | EDMA_ARB_CFG_OFS = 0x38, |
| 349 | |
| 350 | EDMA_HALTCOND_OFS = 0x60, /* GenIIe halt conditions */ |
Mark Lord | c01e8a2 | 2009-02-25 15:14:48 -0500 | [diff] [blame] | 351 | EDMA_UNKNOWN_RSVD_OFS = 0x6C, /* GenIIe unknown/reserved */ |
Mark Lord | da14265 | 2009-01-30 18:51:54 -0500 | [diff] [blame] | 352 | |
| 353 | BMDMA_CMD_OFS = 0x224, /* bmdma command register */ |
| 354 | BMDMA_STATUS_OFS = 0x228, /* bmdma status register */ |
| 355 | BMDMA_PRD_LOW_OFS = 0x22c, /* bmdma PRD addr 31:0 */ |
| 356 | BMDMA_PRD_HIGH_OFS = 0x230, /* bmdma PRD addr 63:32 */ |
| 357 | |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 358 | /* Host private flags (hp_flags) */ |
| 359 | MV_HP_FLAG_MSI = (1 << 0), |
Jeff Garzik | 47c2b67 | 2005-11-12 21:13:17 -0500 | [diff] [blame] | 360 | MV_HP_ERRATA_50XXB0 = (1 << 1), |
| 361 | MV_HP_ERRATA_50XXB2 = (1 << 2), |
| 362 | MV_HP_ERRATA_60X1B2 = (1 << 3), |
| 363 | MV_HP_ERRATA_60X1C0 = (1 << 4), |
Jeff Garzik | 0ea9e17 | 2007-07-13 17:06:45 -0400 | [diff] [blame] | 364 | MV_HP_GEN_I = (1 << 6), /* Generation I: 50xx */ |
| 365 | MV_HP_GEN_II = (1 << 7), /* Generation II: 60xx */ |
| 366 | MV_HP_GEN_IIE = (1 << 8), /* Generation IIE: 6042/7042 */ |
Mark Lord | 02a121d | 2007-12-01 13:07:22 -0500 | [diff] [blame] | 367 | MV_HP_PCIE = (1 << 9), /* PCIe bus/regs: 7042 */ |
Mark Lord | 616d4a9 | 2008-05-02 02:08:32 -0400 | [diff] [blame] | 368 | MV_HP_CUT_THROUGH = (1 << 10), /* can use EDMA cut-through */ |
Mark Lord | 1f39847 | 2008-05-27 17:54:48 -0400 | [diff] [blame] | 369 | MV_HP_FLAG_SOC = (1 << 11), /* SystemOnChip, no PCI */ |
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 | /* Port private flags (pp_flags) */ |
Jeff Garzik | 0ea9e17 | 2007-07-13 17:06:45 -0400 | [diff] [blame] | 372 | MV_PP_FLAG_EDMA_EN = (1 << 0), /* is EDMA engine enabled? */ |
Mark Lord | 7210916 | 2008-01-26 18:31:33 -0500 | [diff] [blame] | 373 | 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] | 374 | 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] | 375 | MV_PP_FLAG_DELAYED_EH = (1 << 3), /* delayed dev err handling */ |
Mark Lord | d16ab3f | 2009-02-25 15:17:43 -0500 | [diff] [blame] | 376 | MV_PP_FLAG_FAKE_ATA_BUSY = (1 << 4), /* ignore initial ATA_DRDY */ |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 377 | }; |
| 378 | |
Jeff Garzik | ee9ccdf | 2007-07-12 15:51:22 -0400 | [diff] [blame] | 379 | #define IS_GEN_I(hpriv) ((hpriv)->hp_flags & MV_HP_GEN_I) |
| 380 | #define IS_GEN_II(hpriv) ((hpriv)->hp_flags & MV_HP_GEN_II) |
Jeff Garzik | e4e7b89 | 2006-01-31 12:18:41 -0500 | [diff] [blame] | 381 | #define IS_GEN_IIE(hpriv) ((hpriv)->hp_flags & MV_HP_GEN_IIE) |
Mark Lord | 8e7decd | 2008-05-02 02:07:51 -0400 | [diff] [blame] | 382 | #define IS_PCIE(hpriv) ((hpriv)->hp_flags & MV_HP_PCIE) |
Mark Lord | 1f39847 | 2008-05-27 17:54:48 -0400 | [diff] [blame] | 383 | #define IS_SOC(hpriv) ((hpriv)->hp_flags & MV_HP_FLAG_SOC) |
Jeff Garzik | bca1c4e | 2005-11-12 12:48:15 -0500 | [diff] [blame] | 384 | |
Lennert Buytenhek | 15a3263 | 2008-03-27 14:51:39 -0400 | [diff] [blame] | 385 | #define WINDOW_CTRL(i) (0x20030 + ((i) << 4)) |
| 386 | #define WINDOW_BASE(i) (0x20034 + ((i) << 4)) |
| 387 | |
Jeff Garzik | 095fec8 | 2005-11-12 09:50:49 -0500 | [diff] [blame] | 388 | enum { |
Jeff Garzik | baf14aa | 2007-10-09 13:51:57 -0400 | [diff] [blame] | 389 | /* DMA boundary 0xffff is required by the s/g splitting |
| 390 | * we need on /length/ in mv_fill-sg(). |
| 391 | */ |
| 392 | MV_DMA_BOUNDARY = 0xffffU, |
Jeff Garzik | 095fec8 | 2005-11-12 09:50:49 -0500 | [diff] [blame] | 393 | |
Jeff Garzik | 0ea9e17 | 2007-07-13 17:06:45 -0400 | [diff] [blame] | 394 | /* mask of register bits containing lower 32 bits |
| 395 | * of EDMA request queue DMA address |
| 396 | */ |
Jeff Garzik | 095fec8 | 2005-11-12 09:50:49 -0500 | [diff] [blame] | 397 | EDMA_REQ_Q_BASE_LO_MASK = 0xfffffc00U, |
| 398 | |
Jeff Garzik | 0ea9e17 | 2007-07-13 17:06:45 -0400 | [diff] [blame] | 399 | /* ditto, for response queue */ |
Jeff Garzik | 095fec8 | 2005-11-12 09:50:49 -0500 | [diff] [blame] | 400 | EDMA_RSP_Q_BASE_LO_MASK = 0xffffff00U, |
| 401 | }; |
| 402 | |
Jeff Garzik | 522479f | 2005-11-12 22:14:02 -0500 | [diff] [blame] | 403 | enum chip_type { |
| 404 | chip_504x, |
| 405 | chip_508x, |
| 406 | chip_5080, |
| 407 | chip_604x, |
| 408 | chip_608x, |
Jeff Garzik | e4e7b89 | 2006-01-31 12:18:41 -0500 | [diff] [blame] | 409 | chip_6042, |
| 410 | chip_7042, |
Saeed Bishara | f351b2d | 2008-02-01 18:08:03 -0500 | [diff] [blame] | 411 | chip_soc, |
Jeff Garzik | 522479f | 2005-11-12 22:14:02 -0500 | [diff] [blame] | 412 | }; |
| 413 | |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 414 | /* Command ReQuest Block: 32B */ |
| 415 | struct mv_crqb { |
Mark Lord | e146987 | 2006-05-22 19:02:03 -0400 | [diff] [blame] | 416 | __le32 sg_addr; |
| 417 | __le32 sg_addr_hi; |
| 418 | __le16 ctrl_flags; |
| 419 | __le16 ata_cmd[11]; |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 420 | }; |
| 421 | |
Jeff Garzik | e4e7b89 | 2006-01-31 12:18:41 -0500 | [diff] [blame] | 422 | struct mv_crqb_iie { |
Mark Lord | e146987 | 2006-05-22 19:02:03 -0400 | [diff] [blame] | 423 | __le32 addr; |
| 424 | __le32 addr_hi; |
| 425 | __le32 flags; |
| 426 | __le32 len; |
| 427 | __le32 ata_cmd[4]; |
Jeff Garzik | e4e7b89 | 2006-01-31 12:18:41 -0500 | [diff] [blame] | 428 | }; |
| 429 | |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 430 | /* Command ResPonse Block: 8B */ |
| 431 | struct mv_crpb { |
Mark Lord | e146987 | 2006-05-22 19:02:03 -0400 | [diff] [blame] | 432 | __le16 id; |
| 433 | __le16 flags; |
| 434 | __le32 tmstmp; |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 435 | }; |
| 436 | |
| 437 | /* EDMA Physical Region Descriptor (ePRD); A.K.A. SG */ |
| 438 | struct mv_sg { |
Mark Lord | e146987 | 2006-05-22 19:02:03 -0400 | [diff] [blame] | 439 | __le32 addr; |
| 440 | __le32 flags_size; |
| 441 | __le32 addr_hi; |
| 442 | __le32 reserved; |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 443 | }; |
| 444 | |
Mark Lord | 08da175 | 2009-02-25 15:13:03 -0500 | [diff] [blame] | 445 | /* |
| 446 | * We keep a local cache of a few frequently accessed port |
| 447 | * registers here, to avoid having to read them (very slow) |
| 448 | * when switching between EDMA and non-EDMA modes. |
| 449 | */ |
| 450 | struct mv_cached_regs { |
| 451 | u32 fiscfg; |
| 452 | u32 ltmode; |
| 453 | u32 haltcond; |
Mark Lord | c01e8a2 | 2009-02-25 15:14:48 -0500 | [diff] [blame] | 454 | u32 unknown_rsvd; |
Mark Lord | 08da175 | 2009-02-25 15:13:03 -0500 | [diff] [blame] | 455 | }; |
| 456 | |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 457 | struct mv_port_priv { |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 458 | struct mv_crqb *crqb; |
| 459 | dma_addr_t crqb_dma; |
| 460 | struct mv_crpb *crpb; |
| 461 | dma_addr_t crpb_dma; |
Mark Lord | eb73d55 | 2008-01-29 13:24:00 -0500 | [diff] [blame] | 462 | struct mv_sg *sg_tbl[MV_MAX_Q_DEPTH]; |
| 463 | dma_addr_t sg_tbl_dma[MV_MAX_Q_DEPTH]; |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 464 | |
| 465 | unsigned int req_idx; |
| 466 | unsigned int resp_idx; |
| 467 | |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 468 | u32 pp_flags; |
Mark Lord | 08da175 | 2009-02-25 15:13:03 -0500 | [diff] [blame] | 469 | struct mv_cached_regs cached; |
Mark Lord | 29d187b | 2008-05-02 02:15:37 -0400 | [diff] [blame] | 470 | unsigned int delayed_eh_pmp_map; |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 471 | }; |
| 472 | |
Jeff Garzik | bca1c4e | 2005-11-12 12:48:15 -0500 | [diff] [blame] | 473 | struct mv_port_signal { |
| 474 | u32 amps; |
| 475 | u32 pre; |
| 476 | }; |
| 477 | |
Mark Lord | 02a121d | 2007-12-01 13:07:22 -0500 | [diff] [blame] | 478 | struct mv_host_priv { |
| 479 | u32 hp_flags; |
Mark Lord | 96e2c48 | 2008-05-17 13:38:00 -0400 | [diff] [blame] | 480 | u32 main_irq_mask; |
Mark Lord | 02a121d | 2007-12-01 13:07:22 -0500 | [diff] [blame] | 481 | struct mv_port_signal signal[8]; |
| 482 | const struct mv_hw_ops *ops; |
Saeed Bishara | f351b2d | 2008-02-01 18:08:03 -0500 | [diff] [blame] | 483 | int n_ports; |
| 484 | void __iomem *base; |
Mark Lord | 7368f91 | 2008-04-25 11:24:24 -0400 | [diff] [blame] | 485 | void __iomem *main_irq_cause_addr; |
| 486 | void __iomem *main_irq_mask_addr; |
Mark Lord | 02a121d | 2007-12-01 13:07:22 -0500 | [diff] [blame] | 487 | u32 irq_cause_ofs; |
| 488 | u32 irq_mask_ofs; |
| 489 | u32 unmask_all_irqs; |
Mark Lord | da2fa9b | 2008-01-26 18:32:45 -0500 | [diff] [blame] | 490 | /* |
| 491 | * These consistent DMA memory pools give us guaranteed |
| 492 | * alignment for hardware-accessed data structures, |
| 493 | * and less memory waste in accomplishing the alignment. |
| 494 | */ |
| 495 | struct dma_pool *crqb_pool; |
| 496 | struct dma_pool *crpb_pool; |
| 497 | struct dma_pool *sg_tbl_pool; |
Mark Lord | 02a121d | 2007-12-01 13:07:22 -0500 | [diff] [blame] | 498 | }; |
| 499 | |
Jeff Garzik | 47c2b67 | 2005-11-12 21:13:17 -0500 | [diff] [blame] | 500 | struct mv_hw_ops { |
Jeff Garzik | 2a47ce0 | 2005-11-12 23:05:14 -0500 | [diff] [blame] | 501 | void (*phy_errata)(struct mv_host_priv *hpriv, void __iomem *mmio, |
| 502 | unsigned int port); |
Jeff Garzik | 47c2b67 | 2005-11-12 21:13:17 -0500 | [diff] [blame] | 503 | void (*enable_leds)(struct mv_host_priv *hpriv, void __iomem *mmio); |
| 504 | void (*read_preamp)(struct mv_host_priv *hpriv, int idx, |
| 505 | void __iomem *mmio); |
Jeff Garzik | c9d3913 | 2005-11-13 17:47:51 -0500 | [diff] [blame] | 506 | int (*reset_hc)(struct mv_host_priv *hpriv, void __iomem *mmio, |
| 507 | unsigned int n_hc); |
Jeff Garzik | 522479f | 2005-11-12 22:14:02 -0500 | [diff] [blame] | 508 | void (*reset_flash)(struct mv_host_priv *hpriv, void __iomem *mmio); |
Saeed Bishara | 7bb3c52 | 2008-01-30 11:50:45 -1100 | [diff] [blame] | 509 | void (*reset_bus)(struct ata_host *host, void __iomem *mmio); |
Jeff Garzik | 47c2b67 | 2005-11-12 21:13:17 -0500 | [diff] [blame] | 510 | }; |
| 511 | |
Tejun Heo | 82ef04f | 2008-07-31 17:02:40 +0900 | [diff] [blame] | 512 | static int mv_scr_read(struct ata_link *link, unsigned int sc_reg_in, u32 *val); |
| 513 | static int mv_scr_write(struct ata_link *link, unsigned int sc_reg_in, u32 val); |
| 514 | static int mv5_scr_read(struct ata_link *link, unsigned int sc_reg_in, u32 *val); |
| 515 | 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] | 516 | static int mv_port_start(struct ata_port *ap); |
| 517 | static void mv_port_stop(struct ata_port *ap); |
Mark Lord | 3e4a139 | 2008-05-02 02:10:02 -0400 | [diff] [blame] | 518 | static int mv_qc_defer(struct ata_queued_cmd *qc); |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 519 | static void mv_qc_prep(struct ata_queued_cmd *qc); |
Jeff Garzik | e4e7b89 | 2006-01-31 12:18:41 -0500 | [diff] [blame] | 520 | static void mv_qc_prep_iie(struct ata_queued_cmd *qc); |
Tejun Heo | 9a3d9eb | 2006-01-23 13:09:36 +0900 | [diff] [blame] | 521 | static unsigned int mv_qc_issue(struct ata_queued_cmd *qc); |
Tejun Heo | a1efdab | 2008-03-25 12:22:50 +0900 | [diff] [blame] | 522 | static int mv_hardreset(struct ata_link *link, unsigned int *class, |
| 523 | unsigned long deadline); |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 524 | static void mv_eh_freeze(struct ata_port *ap); |
| 525 | static void mv_eh_thaw(struct ata_port *ap); |
Mark Lord | f273827 | 2008-01-26 18:32:29 -0500 | [diff] [blame] | 526 | static void mv6_dev_config(struct ata_device *dev); |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 527 | |
Jeff Garzik | 2a47ce0 | 2005-11-12 23:05:14 -0500 | [diff] [blame] | 528 | static void mv5_phy_errata(struct mv_host_priv *hpriv, void __iomem *mmio, |
| 529 | unsigned int port); |
Jeff Garzik | 47c2b67 | 2005-11-12 21:13:17 -0500 | [diff] [blame] | 530 | static void mv5_enable_leds(struct mv_host_priv *hpriv, void __iomem *mmio); |
| 531 | static void mv5_read_preamp(struct mv_host_priv *hpriv, int idx, |
| 532 | void __iomem *mmio); |
Jeff Garzik | c9d3913 | 2005-11-13 17:47:51 -0500 | [diff] [blame] | 533 | static int mv5_reset_hc(struct mv_host_priv *hpriv, void __iomem *mmio, |
| 534 | unsigned int n_hc); |
Jeff Garzik | 522479f | 2005-11-12 22:14:02 -0500 | [diff] [blame] | 535 | 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] | 536 | static void mv5_reset_bus(struct ata_host *host, void __iomem *mmio); |
Jeff Garzik | 47c2b67 | 2005-11-12 21:13:17 -0500 | [diff] [blame] | 537 | |
Jeff Garzik | 2a47ce0 | 2005-11-12 23:05:14 -0500 | [diff] [blame] | 538 | static void mv6_phy_errata(struct mv_host_priv *hpriv, void __iomem *mmio, |
| 539 | unsigned int port); |
Jeff Garzik | 47c2b67 | 2005-11-12 21:13:17 -0500 | [diff] [blame] | 540 | static void mv6_enable_leds(struct mv_host_priv *hpriv, void __iomem *mmio); |
| 541 | static void mv6_read_preamp(struct mv_host_priv *hpriv, int idx, |
| 542 | void __iomem *mmio); |
Jeff Garzik | c9d3913 | 2005-11-13 17:47:51 -0500 | [diff] [blame] | 543 | static int mv6_reset_hc(struct mv_host_priv *hpriv, void __iomem *mmio, |
| 544 | unsigned int n_hc); |
Jeff Garzik | 522479f | 2005-11-12 22:14:02 -0500 | [diff] [blame] | 545 | 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] | 546 | static void mv_soc_enable_leds(struct mv_host_priv *hpriv, |
| 547 | void __iomem *mmio); |
| 548 | static void mv_soc_read_preamp(struct mv_host_priv *hpriv, int idx, |
| 549 | void __iomem *mmio); |
| 550 | static int mv_soc_reset_hc(struct mv_host_priv *hpriv, |
| 551 | void __iomem *mmio, unsigned int n_hc); |
| 552 | static void mv_soc_reset_flash(struct mv_host_priv *hpriv, |
| 553 | void __iomem *mmio); |
| 554 | 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] | 555 | 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] | 556 | 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] | 557 | unsigned int port_no); |
Mark Lord | e12bef5 | 2008-03-31 19:33:56 -0400 | [diff] [blame] | 558 | static int mv_stop_edma(struct ata_port *ap); |
Mark Lord | b562468 | 2008-03-31 19:34:40 -0400 | [diff] [blame] | 559 | static int mv_stop_edma_engine(void __iomem *port_mmio); |
Mark Lord | 00b8123 | 2009-01-30 18:47:51 -0500 | [diff] [blame] | 560 | 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] | 561 | |
Mark Lord | e49856d | 2008-04-16 14:59:07 -0400 | [diff] [blame] | 562 | static void mv_pmp_select(struct ata_port *ap, int pmp); |
| 563 | static int mv_pmp_hardreset(struct ata_link *link, unsigned int *class, |
| 564 | unsigned long deadline); |
| 565 | static int mv_softreset(struct ata_link *link, unsigned int *class, |
| 566 | unsigned long deadline); |
Mark Lord | 29d187b | 2008-05-02 02:15:37 -0400 | [diff] [blame] | 567 | static void mv_pmp_error_handler(struct ata_port *ap); |
Mark Lord | 4c299ca | 2008-05-02 02:16:20 -0400 | [diff] [blame] | 568 | static void mv_process_crpb_entries(struct ata_port *ap, |
| 569 | struct mv_port_priv *pp); |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 570 | |
Mark Lord | da14265 | 2009-01-30 18:51:54 -0500 | [diff] [blame] | 571 | static void mv_sff_irq_clear(struct ata_port *ap); |
| 572 | static int mv_check_atapi_dma(struct ata_queued_cmd *qc); |
| 573 | static void mv_bmdma_setup(struct ata_queued_cmd *qc); |
| 574 | static void mv_bmdma_start(struct ata_queued_cmd *qc); |
| 575 | static void mv_bmdma_stop(struct ata_queued_cmd *qc); |
| 576 | static u8 mv_bmdma_status(struct ata_port *ap); |
Mark Lord | d16ab3f | 2009-02-25 15:17:43 -0500 | [diff] [blame] | 577 | static u8 mv_sff_check_status(struct ata_port *ap); |
Mark Lord | da14265 | 2009-01-30 18:51:54 -0500 | [diff] [blame] | 578 | |
Mark Lord | eb73d55 | 2008-01-29 13:24:00 -0500 | [diff] [blame] | 579 | /* .sg_tablesize is (MV_MAX_SG_CT / 2) in the structures below |
| 580 | * because we have to allow room for worst case splitting of |
| 581 | * PRDs for 64K boundaries in mv_fill_sg(). |
| 582 | */ |
Jeff Garzik | c5d3e45 | 2007-07-11 18:30:50 -0400 | [diff] [blame] | 583 | static struct scsi_host_template mv5_sht = { |
Tejun Heo | 68d1d07 | 2008-03-25 12:22:49 +0900 | [diff] [blame] | 584 | ATA_BASE_SHT(DRV_NAME), |
Jeff Garzik | baf14aa | 2007-10-09 13:51:57 -0400 | [diff] [blame] | 585 | .sg_tablesize = MV_MAX_SG_CT / 2, |
Jeff Garzik | c5d3e45 | 2007-07-11 18:30:50 -0400 | [diff] [blame] | 586 | .dma_boundary = MV_DMA_BOUNDARY, |
Jeff Garzik | c5d3e45 | 2007-07-11 18:30:50 -0400 | [diff] [blame] | 587 | }; |
| 588 | |
| 589 | static struct scsi_host_template mv6_sht = { |
Tejun Heo | 68d1d07 | 2008-03-25 12:22:49 +0900 | [diff] [blame] | 590 | ATA_NCQ_SHT(DRV_NAME), |
Mark Lord | 138bfdd | 2008-01-26 18:33:18 -0500 | [diff] [blame] | 591 | .can_queue = MV_MAX_Q_DEPTH - 1, |
Jeff Garzik | baf14aa | 2007-10-09 13:51:57 -0400 | [diff] [blame] | 592 | .sg_tablesize = MV_MAX_SG_CT / 2, |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 593 | .dma_boundary = MV_DMA_BOUNDARY, |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 594 | }; |
| 595 | |
Tejun Heo | 029cfd6 | 2008-03-25 12:22:49 +0900 | [diff] [blame] | 596 | static struct ata_port_operations mv5_ops = { |
| 597 | .inherits = &ata_sff_port_ops, |
Jeff Garzik | c9d3913 | 2005-11-13 17:47:51 -0500 | [diff] [blame] | 598 | |
Mark Lord | 3e4a139 | 2008-05-02 02:10:02 -0400 | [diff] [blame] | 599 | .qc_defer = mv_qc_defer, |
Jeff Garzik | c9d3913 | 2005-11-13 17:47:51 -0500 | [diff] [blame] | 600 | .qc_prep = mv_qc_prep, |
| 601 | .qc_issue = mv_qc_issue, |
| 602 | |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 603 | .freeze = mv_eh_freeze, |
| 604 | .thaw = mv_eh_thaw, |
Tejun Heo | a1efdab | 2008-03-25 12:22:50 +0900 | [diff] [blame] | 605 | .hardreset = mv_hardreset, |
Tejun Heo | a1efdab | 2008-03-25 12:22:50 +0900 | [diff] [blame] | 606 | .error_handler = ata_std_error_handler, /* avoid SFF EH */ |
Tejun Heo | 029cfd6 | 2008-03-25 12:22:49 +0900 | [diff] [blame] | 607 | .post_internal_cmd = ATA_OP_NULL, |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 608 | |
Jeff Garzik | c9d3913 | 2005-11-13 17:47:51 -0500 | [diff] [blame] | 609 | .scr_read = mv5_scr_read, |
| 610 | .scr_write = mv5_scr_write, |
| 611 | |
| 612 | .port_start = mv_port_start, |
| 613 | .port_stop = mv_port_stop, |
Jeff Garzik | c9d3913 | 2005-11-13 17:47:51 -0500 | [diff] [blame] | 614 | }; |
| 615 | |
Tejun Heo | 029cfd6 | 2008-03-25 12:22:49 +0900 | [diff] [blame] | 616 | static struct ata_port_operations mv6_ops = { |
| 617 | .inherits = &mv5_ops, |
Mark Lord | f273827 | 2008-01-26 18:32:29 -0500 | [diff] [blame] | 618 | .dev_config = mv6_dev_config, |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 619 | .scr_read = mv_scr_read, |
| 620 | .scr_write = mv_scr_write, |
| 621 | |
Mark Lord | e49856d | 2008-04-16 14:59:07 -0400 | [diff] [blame] | 622 | .pmp_hardreset = mv_pmp_hardreset, |
| 623 | .pmp_softreset = mv_softreset, |
| 624 | .softreset = mv_softreset, |
Mark Lord | 29d187b | 2008-05-02 02:15:37 -0400 | [diff] [blame] | 625 | .error_handler = mv_pmp_error_handler, |
Mark Lord | da14265 | 2009-01-30 18:51:54 -0500 | [diff] [blame] | 626 | |
Mark Lord | 40f21b1 | 2009-03-10 18:51:04 -0400 | [diff] [blame^] | 627 | .sff_check_status = mv_sff_check_status, |
Mark Lord | da14265 | 2009-01-30 18:51:54 -0500 | [diff] [blame] | 628 | .sff_irq_clear = mv_sff_irq_clear, |
| 629 | .check_atapi_dma = mv_check_atapi_dma, |
| 630 | .bmdma_setup = mv_bmdma_setup, |
| 631 | .bmdma_start = mv_bmdma_start, |
| 632 | .bmdma_stop = mv_bmdma_stop, |
| 633 | .bmdma_status = mv_bmdma_status, |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 634 | }; |
| 635 | |
Tejun Heo | 029cfd6 | 2008-03-25 12:22:49 +0900 | [diff] [blame] | 636 | static struct ata_port_operations mv_iie_ops = { |
| 637 | .inherits = &mv6_ops, |
| 638 | .dev_config = ATA_OP_NULL, |
Jeff Garzik | e4e7b89 | 2006-01-31 12:18:41 -0500 | [diff] [blame] | 639 | .qc_prep = mv_qc_prep_iie, |
Jeff Garzik | e4e7b89 | 2006-01-31 12:18:41 -0500 | [diff] [blame] | 640 | }; |
| 641 | |
Arjan van de Ven | 98ac62d | 2005-11-28 10:06:23 +0100 | [diff] [blame] | 642 | static const struct ata_port_info mv_port_info[] = { |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 643 | { /* chip_504x */ |
Mark Lord | 91b1a84 | 2009-01-30 18:46:39 -0500 | [diff] [blame] | 644 | .flags = MV_GEN_I_FLAGS, |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 645 | .pio_mask = 0x1f, /* pio0-4 */ |
Jeff Garzik | bf6263a | 2007-07-09 12:16:50 -0400 | [diff] [blame] | 646 | .udma_mask = ATA_UDMA6, |
Jeff Garzik | c9d3913 | 2005-11-13 17:47:51 -0500 | [diff] [blame] | 647 | .port_ops = &mv5_ops, |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 648 | }, |
| 649 | { /* chip_508x */ |
Mark Lord | 91b1a84 | 2009-01-30 18:46:39 -0500 | [diff] [blame] | 650 | .flags = MV_GEN_I_FLAGS | MV_FLAG_DUAL_HC, |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 651 | .pio_mask = 0x1f, /* pio0-4 */ |
Jeff Garzik | bf6263a | 2007-07-09 12:16:50 -0400 | [diff] [blame] | 652 | .udma_mask = ATA_UDMA6, |
Jeff Garzik | c9d3913 | 2005-11-13 17:47:51 -0500 | [diff] [blame] | 653 | .port_ops = &mv5_ops, |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 654 | }, |
Jeff Garzik | 47c2b67 | 2005-11-12 21:13:17 -0500 | [diff] [blame] | 655 | { /* chip_5080 */ |
Mark Lord | 91b1a84 | 2009-01-30 18:46:39 -0500 | [diff] [blame] | 656 | .flags = MV_GEN_I_FLAGS | MV_FLAG_DUAL_HC, |
Jeff Garzik | 47c2b67 | 2005-11-12 21:13:17 -0500 | [diff] [blame] | 657 | .pio_mask = 0x1f, /* pio0-4 */ |
Jeff Garzik | bf6263a | 2007-07-09 12:16:50 -0400 | [diff] [blame] | 658 | .udma_mask = ATA_UDMA6, |
Jeff Garzik | c9d3913 | 2005-11-13 17:47:51 -0500 | [diff] [blame] | 659 | .port_ops = &mv5_ops, |
Jeff Garzik | 47c2b67 | 2005-11-12 21:13:17 -0500 | [diff] [blame] | 660 | }, |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 661 | { /* chip_604x */ |
Mark Lord | 91b1a84 | 2009-01-30 18:46:39 -0500 | [diff] [blame] | 662 | .flags = MV_GEN_II_FLAGS, |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 663 | .pio_mask = 0x1f, /* pio0-4 */ |
Jeff Garzik | bf6263a | 2007-07-09 12:16:50 -0400 | [diff] [blame] | 664 | .udma_mask = ATA_UDMA6, |
Jeff Garzik | c9d3913 | 2005-11-13 17:47:51 -0500 | [diff] [blame] | 665 | .port_ops = &mv6_ops, |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 666 | }, |
| 667 | { /* chip_608x */ |
Mark Lord | 91b1a84 | 2009-01-30 18:46:39 -0500 | [diff] [blame] | 668 | .flags = MV_GEN_II_FLAGS | MV_FLAG_DUAL_HC, |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 669 | .pio_mask = 0x1f, /* pio0-4 */ |
Jeff Garzik | bf6263a | 2007-07-09 12:16:50 -0400 | [diff] [blame] | 670 | .udma_mask = ATA_UDMA6, |
Jeff Garzik | c9d3913 | 2005-11-13 17:47:51 -0500 | [diff] [blame] | 671 | .port_ops = &mv6_ops, |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 672 | }, |
Jeff Garzik | e4e7b89 | 2006-01-31 12:18:41 -0500 | [diff] [blame] | 673 | { /* chip_6042 */ |
Mark Lord | 91b1a84 | 2009-01-30 18:46:39 -0500 | [diff] [blame] | 674 | .flags = MV_GEN_IIE_FLAGS, |
Jeff Garzik | e4e7b89 | 2006-01-31 12:18:41 -0500 | [diff] [blame] | 675 | .pio_mask = 0x1f, /* pio0-4 */ |
Jeff Garzik | bf6263a | 2007-07-09 12:16:50 -0400 | [diff] [blame] | 676 | .udma_mask = ATA_UDMA6, |
Jeff Garzik | e4e7b89 | 2006-01-31 12:18:41 -0500 | [diff] [blame] | 677 | .port_ops = &mv_iie_ops, |
| 678 | }, |
| 679 | { /* chip_7042 */ |
Mark Lord | 91b1a84 | 2009-01-30 18:46:39 -0500 | [diff] [blame] | 680 | .flags = MV_GEN_IIE_FLAGS, |
Jeff Garzik | e4e7b89 | 2006-01-31 12:18:41 -0500 | [diff] [blame] | 681 | .pio_mask = 0x1f, /* pio0-4 */ |
Jeff Garzik | bf6263a | 2007-07-09 12:16:50 -0400 | [diff] [blame] | 682 | .udma_mask = ATA_UDMA6, |
Jeff Garzik | e4e7b89 | 2006-01-31 12:18:41 -0500 | [diff] [blame] | 683 | .port_ops = &mv_iie_ops, |
| 684 | }, |
Saeed Bishara | f351b2d | 2008-02-01 18:08:03 -0500 | [diff] [blame] | 685 | { /* chip_soc */ |
Mark Lord | 91b1a84 | 2009-01-30 18:46:39 -0500 | [diff] [blame] | 686 | .flags = MV_GEN_IIE_FLAGS, |
Mark Lord | 17c5aab | 2008-04-16 14:56:51 -0400 | [diff] [blame] | 687 | .pio_mask = 0x1f, /* pio0-4 */ |
| 688 | .udma_mask = ATA_UDMA6, |
| 689 | .port_ops = &mv_iie_ops, |
Saeed Bishara | f351b2d | 2008-02-01 18:08:03 -0500 | [diff] [blame] | 690 | }, |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 691 | }; |
| 692 | |
Jeff Garzik | 3b7d697 | 2005-11-10 11:04:11 -0500 | [diff] [blame] | 693 | static const struct pci_device_id mv_pci_tbl[] = { |
Jeff Garzik | 2d2744f | 2006-09-28 20:21:59 -0400 | [diff] [blame] | 694 | { PCI_VDEVICE(MARVELL, 0x5040), chip_504x }, |
| 695 | { PCI_VDEVICE(MARVELL, 0x5041), chip_504x }, |
| 696 | { PCI_VDEVICE(MARVELL, 0x5080), chip_5080 }, |
| 697 | { PCI_VDEVICE(MARVELL, 0x5081), chip_508x }, |
Mark Lord | 46c5784 | 2008-09-04 18:21:07 -0400 | [diff] [blame] | 698 | /* RocketRAID 1720/174x have different identifiers */ |
| 699 | { PCI_VDEVICE(TTI, 0x1720), chip_6042 }, |
Mark Lord | 4462254 | 2009-01-27 16:33:13 -0500 | [diff] [blame] | 700 | { PCI_VDEVICE(TTI, 0x1740), chip_6042 }, |
| 701 | { PCI_VDEVICE(TTI, 0x1742), chip_6042 }, |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 702 | |
Jeff Garzik | 2d2744f | 2006-09-28 20:21:59 -0400 | [diff] [blame] | 703 | { PCI_VDEVICE(MARVELL, 0x6040), chip_604x }, |
| 704 | { PCI_VDEVICE(MARVELL, 0x6041), chip_604x }, |
| 705 | { PCI_VDEVICE(MARVELL, 0x6042), chip_6042 }, |
| 706 | { PCI_VDEVICE(MARVELL, 0x6080), chip_608x }, |
| 707 | { PCI_VDEVICE(MARVELL, 0x6081), chip_608x }, |
Jeff Garzik | 2917953 | 2005-11-11 08:08:03 -0500 | [diff] [blame] | 708 | |
Jeff Garzik | 2d2744f | 2006-09-28 20:21:59 -0400 | [diff] [blame] | 709 | { PCI_VDEVICE(ADAPTEC2, 0x0241), chip_604x }, |
| 710 | |
Florian Attenberger | d9f9c6b | 2007-07-02 17:09:29 +0200 | [diff] [blame] | 711 | /* Adaptec 1430SA */ |
| 712 | { PCI_VDEVICE(ADAPTEC2, 0x0243), chip_7042 }, |
| 713 | |
Mark Lord | 02a121d | 2007-12-01 13:07:22 -0500 | [diff] [blame] | 714 | /* Marvell 7042 support */ |
Morrison, Tom | 6a3d586 | 2007-03-06 02:38:10 -0800 | [diff] [blame] | 715 | { PCI_VDEVICE(MARVELL, 0x7042), chip_7042 }, |
| 716 | |
Mark Lord | 02a121d | 2007-12-01 13:07:22 -0500 | [diff] [blame] | 717 | /* Highpoint RocketRAID PCIe series */ |
| 718 | { PCI_VDEVICE(TTI, 0x2300), chip_7042 }, |
| 719 | { PCI_VDEVICE(TTI, 0x2310), chip_7042 }, |
| 720 | |
Jeff Garzik | 2d2744f | 2006-09-28 20:21:59 -0400 | [diff] [blame] | 721 | { } /* terminate list */ |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 722 | }; |
| 723 | |
Jeff Garzik | 47c2b67 | 2005-11-12 21:13:17 -0500 | [diff] [blame] | 724 | static const struct mv_hw_ops mv5xxx_ops = { |
| 725 | .phy_errata = mv5_phy_errata, |
| 726 | .enable_leds = mv5_enable_leds, |
| 727 | .read_preamp = mv5_read_preamp, |
| 728 | .reset_hc = mv5_reset_hc, |
Jeff Garzik | 522479f | 2005-11-12 22:14:02 -0500 | [diff] [blame] | 729 | .reset_flash = mv5_reset_flash, |
| 730 | .reset_bus = mv5_reset_bus, |
Jeff Garzik | 47c2b67 | 2005-11-12 21:13:17 -0500 | [diff] [blame] | 731 | }; |
| 732 | |
| 733 | static const struct mv_hw_ops mv6xxx_ops = { |
| 734 | .phy_errata = mv6_phy_errata, |
| 735 | .enable_leds = mv6_enable_leds, |
| 736 | .read_preamp = mv6_read_preamp, |
| 737 | .reset_hc = mv6_reset_hc, |
Jeff Garzik | 522479f | 2005-11-12 22:14:02 -0500 | [diff] [blame] | 738 | .reset_flash = mv6_reset_flash, |
| 739 | .reset_bus = mv_reset_pci_bus, |
Jeff Garzik | 47c2b67 | 2005-11-12 21:13:17 -0500 | [diff] [blame] | 740 | }; |
| 741 | |
Saeed Bishara | f351b2d | 2008-02-01 18:08:03 -0500 | [diff] [blame] | 742 | static const struct mv_hw_ops mv_soc_ops = { |
| 743 | .phy_errata = mv6_phy_errata, |
| 744 | .enable_leds = mv_soc_enable_leds, |
| 745 | .read_preamp = mv_soc_read_preamp, |
| 746 | .reset_hc = mv_soc_reset_hc, |
| 747 | .reset_flash = mv_soc_reset_flash, |
| 748 | .reset_bus = mv_soc_reset_bus, |
| 749 | }; |
| 750 | |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 751 | /* |
| 752 | * Functions |
| 753 | */ |
| 754 | |
| 755 | static inline void writelfl(unsigned long data, void __iomem *addr) |
| 756 | { |
| 757 | writel(data, addr); |
| 758 | (void) readl(addr); /* flush to avoid PCI posted write */ |
| 759 | } |
| 760 | |
Jeff Garzik | c9d3913 | 2005-11-13 17:47:51 -0500 | [diff] [blame] | 761 | static inline unsigned int mv_hc_from_port(unsigned int port) |
| 762 | { |
| 763 | return port >> MV_PORT_HC_SHIFT; |
| 764 | } |
| 765 | |
| 766 | static inline unsigned int mv_hardport_from_port(unsigned int port) |
| 767 | { |
| 768 | return port & MV_PORT_MASK; |
| 769 | } |
| 770 | |
Mark Lord | 1cfd19a | 2008-04-19 15:05:50 -0400 | [diff] [blame] | 771 | /* |
| 772 | * Consolidate some rather tricky bit shift calculations. |
| 773 | * This is hot-path stuff, so not a function. |
| 774 | * Simple code, with two return values, so macro rather than inline. |
| 775 | * |
| 776 | * port is the sole input, in range 0..7. |
Mark Lord | 7368f91 | 2008-04-25 11:24:24 -0400 | [diff] [blame] | 777 | * shift is one output, for use with main_irq_cause / main_irq_mask registers. |
| 778 | * hardport is the other output, in range 0..3. |
Mark Lord | 1cfd19a | 2008-04-19 15:05:50 -0400 | [diff] [blame] | 779 | * |
| 780 | * Note that port and hardport may be the same variable in some cases. |
| 781 | */ |
| 782 | #define MV_PORT_TO_SHIFT_AND_HARDPORT(port, shift, hardport) \ |
| 783 | { \ |
| 784 | shift = mv_hc_from_port(port) * HC_SHIFT; \ |
| 785 | hardport = mv_hardport_from_port(port); \ |
| 786 | shift += hardport * 2; \ |
| 787 | } |
| 788 | |
Mark Lord | 352fab7 | 2008-04-19 14:43:42 -0400 | [diff] [blame] | 789 | static inline void __iomem *mv_hc_base(void __iomem *base, unsigned int hc) |
| 790 | { |
| 791 | return (base + MV_SATAHC0_REG_BASE + (hc * MV_SATAHC_REG_SZ)); |
| 792 | } |
| 793 | |
Jeff Garzik | c9d3913 | 2005-11-13 17:47:51 -0500 | [diff] [blame] | 794 | static inline void __iomem *mv_hc_base_from_port(void __iomem *base, |
| 795 | unsigned int port) |
| 796 | { |
| 797 | return mv_hc_base(base, mv_hc_from_port(port)); |
| 798 | } |
| 799 | |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 800 | static inline void __iomem *mv_port_base(void __iomem *base, unsigned int port) |
| 801 | { |
Jeff Garzik | c9d3913 | 2005-11-13 17:47:51 -0500 | [diff] [blame] | 802 | return mv_hc_base_from_port(base, port) + |
Jeff Garzik | 8b26024 | 2005-11-12 12:32:50 -0500 | [diff] [blame] | 803 | MV_SATAHC_ARBTR_REG_SZ + |
Jeff Garzik | c9d3913 | 2005-11-13 17:47:51 -0500 | [diff] [blame] | 804 | (mv_hardport_from_port(port) * MV_PORT_REG_SZ); |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 805 | } |
| 806 | |
Mark Lord | e12bef5 | 2008-03-31 19:33:56 -0400 | [diff] [blame] | 807 | static void __iomem *mv5_phy_base(void __iomem *mmio, unsigned int port) |
| 808 | { |
| 809 | void __iomem *hc_mmio = mv_hc_base_from_port(mmio, port); |
| 810 | unsigned long ofs = (mv_hardport_from_port(port) + 1) * 0x100UL; |
| 811 | |
| 812 | return hc_mmio + ofs; |
| 813 | } |
| 814 | |
Saeed Bishara | f351b2d | 2008-02-01 18:08:03 -0500 | [diff] [blame] | 815 | static inline void __iomem *mv_host_base(struct ata_host *host) |
| 816 | { |
| 817 | struct mv_host_priv *hpriv = host->private_data; |
| 818 | return hpriv->base; |
| 819 | } |
| 820 | |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 821 | static inline void __iomem *mv_ap_base(struct ata_port *ap) |
| 822 | { |
Saeed Bishara | f351b2d | 2008-02-01 18:08:03 -0500 | [diff] [blame] | 823 | return mv_port_base(mv_host_base(ap->host), ap->port_no); |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 824 | } |
| 825 | |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 826 | static inline int mv_get_hc_count(unsigned long port_flags) |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 827 | { |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 828 | return ((port_flags & MV_FLAG_DUAL_HC) ? 2 : 1); |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 829 | } |
| 830 | |
Mark Lord | 08da175 | 2009-02-25 15:13:03 -0500 | [diff] [blame] | 831 | /** |
| 832 | * mv_save_cached_regs - (re-)initialize cached port registers |
| 833 | * @ap: the port whose registers we are caching |
| 834 | * |
| 835 | * Initialize the local cache of port registers, |
| 836 | * so that reading them over and over again can |
| 837 | * be avoided on the hotter paths of this driver. |
| 838 | * This saves a few microseconds each time we switch |
| 839 | * to/from EDMA mode to perform (eg.) a drive cache flush. |
| 840 | */ |
| 841 | static void mv_save_cached_regs(struct ata_port *ap) |
| 842 | { |
| 843 | void __iomem *port_mmio = mv_ap_base(ap); |
| 844 | struct mv_port_priv *pp = ap->private_data; |
| 845 | |
| 846 | pp->cached.fiscfg = readl(port_mmio + FISCFG_OFS); |
| 847 | pp->cached.ltmode = readl(port_mmio + LTMODE_OFS); |
| 848 | pp->cached.haltcond = readl(port_mmio + EDMA_HALTCOND_OFS); |
Mark Lord | c01e8a2 | 2009-02-25 15:14:48 -0500 | [diff] [blame] | 849 | pp->cached.unknown_rsvd = readl(port_mmio + EDMA_UNKNOWN_RSVD_OFS); |
Mark Lord | 08da175 | 2009-02-25 15:13:03 -0500 | [diff] [blame] | 850 | } |
| 851 | |
| 852 | /** |
| 853 | * mv_write_cached_reg - write to a cached port register |
| 854 | * @addr: hardware address of the register |
| 855 | * @old: pointer to cached value of the register |
| 856 | * @new: new value for the register |
| 857 | * |
| 858 | * Write a new value to a cached register, |
| 859 | * but only if the value is different from before. |
| 860 | */ |
| 861 | static inline void mv_write_cached_reg(void __iomem *addr, u32 *old, u32 new) |
| 862 | { |
| 863 | if (new != *old) { |
| 864 | *old = new; |
| 865 | writel(new, addr); |
| 866 | } |
| 867 | } |
| 868 | |
Jeff Garzik | c5d3e45 | 2007-07-11 18:30:50 -0400 | [diff] [blame] | 869 | static void mv_set_edma_ptrs(void __iomem *port_mmio, |
| 870 | struct mv_host_priv *hpriv, |
| 871 | struct mv_port_priv *pp) |
| 872 | { |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 873 | u32 index; |
| 874 | |
Jeff Garzik | c5d3e45 | 2007-07-11 18:30:50 -0400 | [diff] [blame] | 875 | /* |
| 876 | * initialize request queue |
| 877 | */ |
Mark Lord | fcfb1f7 | 2008-04-19 15:06:40 -0400 | [diff] [blame] | 878 | pp->req_idx &= MV_MAX_Q_DEPTH_MASK; /* paranoia */ |
| 879 | index = pp->req_idx << EDMA_REQ_Q_PTR_SHIFT; |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 880 | |
Jeff Garzik | c5d3e45 | 2007-07-11 18:30:50 -0400 | [diff] [blame] | 881 | WARN_ON(pp->crqb_dma & 0x3ff); |
| 882 | 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] | 883 | writelfl((pp->crqb_dma & EDMA_REQ_Q_BASE_LO_MASK) | index, |
Jeff Garzik | c5d3e45 | 2007-07-11 18:30:50 -0400 | [diff] [blame] | 884 | port_mmio + EDMA_REQ_Q_IN_PTR_OFS); |
Mark Lord | 5cf73bf | 2008-05-27 17:58:56 -0400 | [diff] [blame] | 885 | writelfl(index, port_mmio + EDMA_REQ_Q_OUT_PTR_OFS); |
Jeff Garzik | c5d3e45 | 2007-07-11 18:30:50 -0400 | [diff] [blame] | 886 | |
| 887 | /* |
| 888 | * initialize response queue |
| 889 | */ |
Mark Lord | fcfb1f7 | 2008-04-19 15:06:40 -0400 | [diff] [blame] | 890 | pp->resp_idx &= MV_MAX_Q_DEPTH_MASK; /* paranoia */ |
| 891 | index = pp->resp_idx << EDMA_RSP_Q_PTR_SHIFT; |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 892 | |
Jeff Garzik | c5d3e45 | 2007-07-11 18:30:50 -0400 | [diff] [blame] | 893 | WARN_ON(pp->crpb_dma & 0xff); |
| 894 | 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] | 895 | writelfl(index, port_mmio + EDMA_RSP_Q_IN_PTR_OFS); |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 896 | writelfl((pp->crpb_dma & EDMA_RSP_Q_BASE_LO_MASK) | index, |
Jeff Garzik | c5d3e45 | 2007-07-11 18:30:50 -0400 | [diff] [blame] | 897 | port_mmio + EDMA_RSP_Q_OUT_PTR_OFS); |
Jeff Garzik | c5d3e45 | 2007-07-11 18:30:50 -0400 | [diff] [blame] | 898 | } |
| 899 | |
Mark Lord | c4de573 | 2008-05-17 13:35:21 -0400 | [diff] [blame] | 900 | static void mv_set_main_irq_mask(struct ata_host *host, |
| 901 | u32 disable_bits, u32 enable_bits) |
| 902 | { |
| 903 | struct mv_host_priv *hpriv = host->private_data; |
| 904 | u32 old_mask, new_mask; |
| 905 | |
Mark Lord | 96e2c48 | 2008-05-17 13:38:00 -0400 | [diff] [blame] | 906 | old_mask = hpriv->main_irq_mask; |
Mark Lord | c4de573 | 2008-05-17 13:35:21 -0400 | [diff] [blame] | 907 | new_mask = (old_mask & ~disable_bits) | enable_bits; |
Mark Lord | 96e2c48 | 2008-05-17 13:38:00 -0400 | [diff] [blame] | 908 | if (new_mask != old_mask) { |
| 909 | hpriv->main_irq_mask = new_mask; |
Mark Lord | c4de573 | 2008-05-17 13:35:21 -0400 | [diff] [blame] | 910 | writelfl(new_mask, hpriv->main_irq_mask_addr); |
Mark Lord | 96e2c48 | 2008-05-17 13:38:00 -0400 | [diff] [blame] | 911 | } |
Mark Lord | c4de573 | 2008-05-17 13:35:21 -0400 | [diff] [blame] | 912 | } |
| 913 | |
| 914 | static void mv_enable_port_irqs(struct ata_port *ap, |
| 915 | unsigned int port_bits) |
| 916 | { |
| 917 | unsigned int shift, hardport, port = ap->port_no; |
| 918 | u32 disable_bits, enable_bits; |
| 919 | |
| 920 | MV_PORT_TO_SHIFT_AND_HARDPORT(port, shift, hardport); |
| 921 | |
| 922 | disable_bits = (DONE_IRQ | ERR_IRQ) << shift; |
| 923 | enable_bits = port_bits << shift; |
| 924 | mv_set_main_irq_mask(ap->host, disable_bits, enable_bits); |
| 925 | } |
| 926 | |
Mark Lord | 00b8123 | 2009-01-30 18:47:51 -0500 | [diff] [blame] | 927 | static void mv_clear_and_enable_port_irqs(struct ata_port *ap, |
| 928 | void __iomem *port_mmio, |
| 929 | unsigned int port_irqs) |
| 930 | { |
| 931 | struct mv_host_priv *hpriv = ap->host->private_data; |
| 932 | int hardport = mv_hardport_from_port(ap->port_no); |
| 933 | void __iomem *hc_mmio = mv_hc_base_from_port( |
| 934 | mv_host_base(ap->host), ap->port_no); |
| 935 | u32 hc_irq_cause; |
| 936 | |
| 937 | /* clear EDMA event indicators, if any */ |
| 938 | writelfl(0, port_mmio + EDMA_ERR_IRQ_CAUSE_OFS); |
| 939 | |
| 940 | /* clear pending irq events */ |
| 941 | hc_irq_cause = ~((DEV_IRQ | DMA_IRQ) << hardport); |
| 942 | writelfl(hc_irq_cause, hc_mmio + HC_IRQ_CAUSE_OFS); |
| 943 | |
| 944 | /* clear FIS IRQ Cause */ |
| 945 | if (IS_GEN_IIE(hpriv)) |
| 946 | writelfl(0, port_mmio + SATA_FIS_IRQ_CAUSE_OFS); |
| 947 | |
| 948 | mv_enable_port_irqs(ap, port_irqs); |
| 949 | } |
| 950 | |
Brett Russ | 05b308e | 2005-10-05 17:08:53 -0400 | [diff] [blame] | 951 | /** |
Mark Lord | 00b8123 | 2009-01-30 18:47:51 -0500 | [diff] [blame] | 952 | * mv_start_edma - Enable eDMA engine |
Brett Russ | 05b308e | 2005-10-05 17:08:53 -0400 | [diff] [blame] | 953 | * @base: port base address |
| 954 | * @pp: port private data |
| 955 | * |
Tejun Heo | beec7db | 2006-02-11 19:11:13 +0900 | [diff] [blame] | 956 | * Verify the local cache of the eDMA state is accurate with a |
| 957 | * WARN_ON. |
Brett Russ | 05b308e | 2005-10-05 17:08:53 -0400 | [diff] [blame] | 958 | * |
| 959 | * LOCKING: |
| 960 | * Inherited from caller. |
| 961 | */ |
Mark Lord | 00b8123 | 2009-01-30 18:47:51 -0500 | [diff] [blame] | 962 | 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] | 963 | struct mv_port_priv *pp, u8 protocol) |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 964 | { |
Mark Lord | 7210916 | 2008-01-26 18:31:33 -0500 | [diff] [blame] | 965 | int want_ncq = (protocol == ATA_PROT_NCQ); |
| 966 | |
| 967 | if (pp->pp_flags & MV_PP_FLAG_EDMA_EN) { |
| 968 | int using_ncq = ((pp->pp_flags & MV_PP_FLAG_NCQ_EN) != 0); |
| 969 | if (want_ncq != using_ncq) |
Mark Lord | b562468 | 2008-03-31 19:34:40 -0400 | [diff] [blame] | 970 | mv_stop_edma(ap); |
Mark Lord | 7210916 | 2008-01-26 18:31:33 -0500 | [diff] [blame] | 971 | } |
Jeff Garzik | c5d3e45 | 2007-07-11 18:30:50 -0400 | [diff] [blame] | 972 | if (!(pp->pp_flags & MV_PP_FLAG_EDMA_EN)) { |
Mark Lord | 0c58912 | 2008-01-26 18:31:16 -0500 | [diff] [blame] | 973 | struct mv_host_priv *hpriv = ap->host->private_data; |
Mark Lord | 0c58912 | 2008-01-26 18:31:16 -0500 | [diff] [blame] | 974 | |
Mark Lord | 00b8123 | 2009-01-30 18:47:51 -0500 | [diff] [blame] | 975 | mv_edma_cfg(ap, want_ncq, 1); |
Mark Lord | 0c58912 | 2008-01-26 18:31:16 -0500 | [diff] [blame] | 976 | |
Mark Lord | f630d56 | 2008-01-26 18:31:00 -0500 | [diff] [blame] | 977 | mv_set_edma_ptrs(port_mmio, hpriv, pp); |
Mark Lord | 00b8123 | 2009-01-30 18:47:51 -0500 | [diff] [blame] | 978 | 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] | 979 | |
Mark Lord | f630d56 | 2008-01-26 18:31:00 -0500 | [diff] [blame] | 980 | writelfl(EDMA_EN, port_mmio + EDMA_CMD_OFS); |
Brett Russ | afb0edd | 2005-10-05 17:08:42 -0400 | [diff] [blame] | 981 | pp->pp_flags |= MV_PP_FLAG_EDMA_EN; |
| 982 | } |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 983 | } |
| 984 | |
Mark Lord | 9b2c4e0 | 2008-05-02 02:09:14 -0400 | [diff] [blame] | 985 | static void mv_wait_for_edma_empty_idle(struct ata_port *ap) |
| 986 | { |
| 987 | void __iomem *port_mmio = mv_ap_base(ap); |
| 988 | const u32 empty_idle = (EDMA_STATUS_CACHE_EMPTY | EDMA_STATUS_IDLE); |
| 989 | const int per_loop = 5, timeout = (15 * 1000 / per_loop); |
| 990 | int i; |
| 991 | |
| 992 | /* |
| 993 | * Wait for the EDMA engine to finish transactions in progress. |
Mark Lord | c46938c | 2008-05-02 14:02:28 -0400 | [diff] [blame] | 994 | * No idea what a good "timeout" value might be, but measurements |
| 995 | * indicate that it often requires hundreds of microseconds |
| 996 | * with two drives in-use. So we use the 15msec value above |
| 997 | * as a rough guess at what even more drives might require. |
Mark Lord | 9b2c4e0 | 2008-05-02 02:09:14 -0400 | [diff] [blame] | 998 | */ |
| 999 | for (i = 0; i < timeout; ++i) { |
| 1000 | u32 edma_stat = readl(port_mmio + EDMA_STATUS_OFS); |
| 1001 | if ((edma_stat & empty_idle) == empty_idle) |
| 1002 | break; |
| 1003 | udelay(per_loop); |
| 1004 | } |
| 1005 | /* ata_port_printk(ap, KERN_INFO, "%s: %u+ usecs\n", __func__, i); */ |
| 1006 | } |
| 1007 | |
Brett Russ | 05b308e | 2005-10-05 17:08:53 -0400 | [diff] [blame] | 1008 | /** |
Mark Lord | e12bef5 | 2008-03-31 19:33:56 -0400 | [diff] [blame] | 1009 | * mv_stop_edma_engine - Disable eDMA engine |
Mark Lord | b562468 | 2008-03-31 19:34:40 -0400 | [diff] [blame] | 1010 | * @port_mmio: io base address |
Brett Russ | 05b308e | 2005-10-05 17:08:53 -0400 | [diff] [blame] | 1011 | * |
| 1012 | * LOCKING: |
| 1013 | * Inherited from caller. |
| 1014 | */ |
Mark Lord | b562468 | 2008-03-31 19:34:40 -0400 | [diff] [blame] | 1015 | static int mv_stop_edma_engine(void __iomem *port_mmio) |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 1016 | { |
Mark Lord | b562468 | 2008-03-31 19:34:40 -0400 | [diff] [blame] | 1017 | int i; |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 1018 | |
Mark Lord | b562468 | 2008-03-31 19:34:40 -0400 | [diff] [blame] | 1019 | /* Disable eDMA. The disable bit auto clears. */ |
| 1020 | writelfl(EDMA_DS, port_mmio + EDMA_CMD_OFS); |
Jeff Garzik | 8b26024 | 2005-11-12 12:32:50 -0500 | [diff] [blame] | 1021 | |
Mark Lord | b562468 | 2008-03-31 19:34:40 -0400 | [diff] [blame] | 1022 | /* Wait for the chip to confirm eDMA is off. */ |
| 1023 | for (i = 10000; i > 0; i--) { |
| 1024 | u32 reg = readl(port_mmio + EDMA_CMD_OFS); |
Jeff Garzik | 4537deb | 2007-07-12 14:30:19 -0400 | [diff] [blame] | 1025 | if (!(reg & EDMA_EN)) |
Mark Lord | b562468 | 2008-03-31 19:34:40 -0400 | [diff] [blame] | 1026 | return 0; |
| 1027 | udelay(10); |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 1028 | } |
Mark Lord | b562468 | 2008-03-31 19:34:40 -0400 | [diff] [blame] | 1029 | return -EIO; |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 1030 | } |
| 1031 | |
Mark Lord | e12bef5 | 2008-03-31 19:33:56 -0400 | [diff] [blame] | 1032 | static int mv_stop_edma(struct ata_port *ap) |
Jeff Garzik | 0ea9e17 | 2007-07-13 17:06:45 -0400 | [diff] [blame] | 1033 | { |
Mark Lord | b562468 | 2008-03-31 19:34:40 -0400 | [diff] [blame] | 1034 | void __iomem *port_mmio = mv_ap_base(ap); |
| 1035 | struct mv_port_priv *pp = ap->private_data; |
Mark Lord | 66e57a2 | 2009-01-30 18:52:58 -0500 | [diff] [blame] | 1036 | int err = 0; |
Jeff Garzik | 0ea9e17 | 2007-07-13 17:06:45 -0400 | [diff] [blame] | 1037 | |
Mark Lord | b562468 | 2008-03-31 19:34:40 -0400 | [diff] [blame] | 1038 | if (!(pp->pp_flags & MV_PP_FLAG_EDMA_EN)) |
| 1039 | return 0; |
| 1040 | pp->pp_flags &= ~MV_PP_FLAG_EDMA_EN; |
Mark Lord | 9b2c4e0 | 2008-05-02 02:09:14 -0400 | [diff] [blame] | 1041 | mv_wait_for_edma_empty_idle(ap); |
Mark Lord | b562468 | 2008-03-31 19:34:40 -0400 | [diff] [blame] | 1042 | if (mv_stop_edma_engine(port_mmio)) { |
| 1043 | ata_port_printk(ap, KERN_ERR, "Unable to stop eDMA\n"); |
Mark Lord | 66e57a2 | 2009-01-30 18:52:58 -0500 | [diff] [blame] | 1044 | err = -EIO; |
Mark Lord | b562468 | 2008-03-31 19:34:40 -0400 | [diff] [blame] | 1045 | } |
Mark Lord | 66e57a2 | 2009-01-30 18:52:58 -0500 | [diff] [blame] | 1046 | mv_edma_cfg(ap, 0, 0); |
| 1047 | return err; |
Jeff Garzik | 0ea9e17 | 2007-07-13 17:06:45 -0400 | [diff] [blame] | 1048 | } |
| 1049 | |
Jeff Garzik | 8a70f8d | 2005-10-05 17:19:47 -0400 | [diff] [blame] | 1050 | #ifdef ATA_DEBUG |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 1051 | static void mv_dump_mem(void __iomem *start, unsigned bytes) |
| 1052 | { |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 1053 | int b, w; |
| 1054 | for (b = 0; b < bytes; ) { |
| 1055 | DPRINTK("%p: ", start + b); |
| 1056 | for (w = 0; b < bytes && w < 4; w++) { |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 1057 | printk("%08x ", readl(start + b)); |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 1058 | b += sizeof(u32); |
| 1059 | } |
| 1060 | printk("\n"); |
| 1061 | } |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 1062 | } |
Jeff Garzik | 8a70f8d | 2005-10-05 17:19:47 -0400 | [diff] [blame] | 1063 | #endif |
| 1064 | |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 1065 | static void mv_dump_pci_cfg(struct pci_dev *pdev, unsigned bytes) |
| 1066 | { |
| 1067 | #ifdef ATA_DEBUG |
| 1068 | int b, w; |
| 1069 | u32 dw; |
| 1070 | for (b = 0; b < bytes; ) { |
| 1071 | DPRINTK("%02x: ", b); |
| 1072 | for (w = 0; b < bytes && w < 4; w++) { |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 1073 | (void) pci_read_config_dword(pdev, b, &dw); |
| 1074 | printk("%08x ", dw); |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 1075 | b += sizeof(u32); |
| 1076 | } |
| 1077 | printk("\n"); |
| 1078 | } |
| 1079 | #endif |
| 1080 | } |
| 1081 | static void mv_dump_all_regs(void __iomem *mmio_base, int port, |
| 1082 | struct pci_dev *pdev) |
| 1083 | { |
| 1084 | #ifdef ATA_DEBUG |
Jeff Garzik | 8b26024 | 2005-11-12 12:32:50 -0500 | [diff] [blame] | 1085 | void __iomem *hc_base = mv_hc_base(mmio_base, |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 1086 | port >> MV_PORT_HC_SHIFT); |
| 1087 | void __iomem *port_base; |
| 1088 | int start_port, num_ports, p, start_hc, num_hcs, hc; |
| 1089 | |
| 1090 | if (0 > port) { |
| 1091 | start_hc = start_port = 0; |
| 1092 | num_ports = 8; /* shld be benign for 4 port devs */ |
| 1093 | num_hcs = 2; |
| 1094 | } else { |
| 1095 | start_hc = port >> MV_PORT_HC_SHIFT; |
| 1096 | start_port = port; |
| 1097 | num_ports = num_hcs = 1; |
| 1098 | } |
Jeff Garzik | 8b26024 | 2005-11-12 12:32:50 -0500 | [diff] [blame] | 1099 | DPRINTK("All registers for port(s) %u-%u:\n", start_port, |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 1100 | num_ports > 1 ? num_ports - 1 : start_port); |
| 1101 | |
| 1102 | if (NULL != pdev) { |
| 1103 | DPRINTK("PCI config space regs:\n"); |
| 1104 | mv_dump_pci_cfg(pdev, 0x68); |
| 1105 | } |
| 1106 | DPRINTK("PCI regs:\n"); |
| 1107 | mv_dump_mem(mmio_base+0xc00, 0x3c); |
| 1108 | mv_dump_mem(mmio_base+0xd00, 0x34); |
| 1109 | mv_dump_mem(mmio_base+0xf00, 0x4); |
| 1110 | mv_dump_mem(mmio_base+0x1d00, 0x6c); |
| 1111 | for (hc = start_hc; hc < start_hc + num_hcs; hc++) { |
Dan Aloni | d220c37 | 2006-04-10 23:20:22 -0700 | [diff] [blame] | 1112 | hc_base = mv_hc_base(mmio_base, hc); |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 1113 | DPRINTK("HC regs (HC %i):\n", hc); |
| 1114 | mv_dump_mem(hc_base, 0x1c); |
| 1115 | } |
| 1116 | for (p = start_port; p < start_port + num_ports; p++) { |
| 1117 | port_base = mv_port_base(mmio_base, p); |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 1118 | DPRINTK("EDMA regs (port %i):\n", p); |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 1119 | mv_dump_mem(port_base, 0x54); |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 1120 | DPRINTK("SATA regs (port %i):\n", p); |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 1121 | mv_dump_mem(port_base+0x300, 0x60); |
| 1122 | } |
| 1123 | #endif |
| 1124 | } |
| 1125 | |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 1126 | static unsigned int mv_scr_offset(unsigned int sc_reg_in) |
| 1127 | { |
| 1128 | unsigned int ofs; |
| 1129 | |
| 1130 | switch (sc_reg_in) { |
| 1131 | case SCR_STATUS: |
| 1132 | case SCR_CONTROL: |
| 1133 | case SCR_ERROR: |
| 1134 | ofs = SATA_STATUS_OFS + (sc_reg_in * sizeof(u32)); |
| 1135 | break; |
| 1136 | case SCR_ACTIVE: |
| 1137 | ofs = SATA_ACTIVE_OFS; /* active is not with the others */ |
| 1138 | break; |
| 1139 | default: |
| 1140 | ofs = 0xffffffffU; |
| 1141 | break; |
| 1142 | } |
| 1143 | return ofs; |
| 1144 | } |
| 1145 | |
Tejun Heo | 82ef04f | 2008-07-31 17:02:40 +0900 | [diff] [blame] | 1146 | 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] | 1147 | { |
| 1148 | unsigned int ofs = mv_scr_offset(sc_reg_in); |
| 1149 | |
Tejun Heo | da3dbb1 | 2007-07-16 14:29:40 +0900 | [diff] [blame] | 1150 | if (ofs != 0xffffffffU) { |
Tejun Heo | 82ef04f | 2008-07-31 17:02:40 +0900 | [diff] [blame] | 1151 | *val = readl(mv_ap_base(link->ap) + ofs); |
Tejun Heo | da3dbb1 | 2007-07-16 14:29:40 +0900 | [diff] [blame] | 1152 | return 0; |
| 1153 | } else |
| 1154 | return -EINVAL; |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 1155 | } |
| 1156 | |
Tejun Heo | 82ef04f | 2008-07-31 17:02:40 +0900 | [diff] [blame] | 1157 | 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] | 1158 | { |
| 1159 | unsigned int ofs = mv_scr_offset(sc_reg_in); |
| 1160 | |
Tejun Heo | da3dbb1 | 2007-07-16 14:29:40 +0900 | [diff] [blame] | 1161 | if (ofs != 0xffffffffU) { |
Tejun Heo | 82ef04f | 2008-07-31 17:02:40 +0900 | [diff] [blame] | 1162 | writelfl(val, mv_ap_base(link->ap) + ofs); |
Tejun Heo | da3dbb1 | 2007-07-16 14:29:40 +0900 | [diff] [blame] | 1163 | return 0; |
| 1164 | } else |
| 1165 | return -EINVAL; |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 1166 | } |
| 1167 | |
Mark Lord | f273827 | 2008-01-26 18:32:29 -0500 | [diff] [blame] | 1168 | static void mv6_dev_config(struct ata_device *adev) |
| 1169 | { |
| 1170 | /* |
Mark Lord | e49856d | 2008-04-16 14:59:07 -0400 | [diff] [blame] | 1171 | * Deal with Gen-II ("mv6") hardware quirks/restrictions: |
| 1172 | * |
| 1173 | * Gen-II does not support NCQ over a port multiplier |
| 1174 | * (no FIS-based switching). |
Mark Lord | f273827 | 2008-01-26 18:32:29 -0500 | [diff] [blame] | 1175 | */ |
Mark Lord | e49856d | 2008-04-16 14:59:07 -0400 | [diff] [blame] | 1176 | if (adev->flags & ATA_DFLAG_NCQ) { |
Mark Lord | 352fab7 | 2008-04-19 14:43:42 -0400 | [diff] [blame] | 1177 | if (sata_pmp_attached(adev->link->ap)) { |
Mark Lord | e49856d | 2008-04-16 14:59:07 -0400 | [diff] [blame] | 1178 | adev->flags &= ~ATA_DFLAG_NCQ; |
Mark Lord | 352fab7 | 2008-04-19 14:43:42 -0400 | [diff] [blame] | 1179 | ata_dev_printk(adev, KERN_INFO, |
| 1180 | "NCQ disabled for command-based switching\n"); |
Mark Lord | 352fab7 | 2008-04-19 14:43:42 -0400 | [diff] [blame] | 1181 | } |
Mark Lord | e49856d | 2008-04-16 14:59:07 -0400 | [diff] [blame] | 1182 | } |
Mark Lord | f273827 | 2008-01-26 18:32:29 -0500 | [diff] [blame] | 1183 | } |
| 1184 | |
Mark Lord | 3e4a139 | 2008-05-02 02:10:02 -0400 | [diff] [blame] | 1185 | static int mv_qc_defer(struct ata_queued_cmd *qc) |
| 1186 | { |
| 1187 | struct ata_link *link = qc->dev->link; |
| 1188 | struct ata_port *ap = link->ap; |
| 1189 | struct mv_port_priv *pp = ap->private_data; |
| 1190 | |
| 1191 | /* |
Mark Lord | 29d187b | 2008-05-02 02:15:37 -0400 | [diff] [blame] | 1192 | * Don't allow new commands if we're in a delayed EH state |
| 1193 | * for NCQ and/or FIS-based switching. |
| 1194 | */ |
| 1195 | if (pp->pp_flags & MV_PP_FLAG_DELAYED_EH) |
| 1196 | return ATA_DEFER_PORT; |
| 1197 | /* |
Mark Lord | 3e4a139 | 2008-05-02 02:10:02 -0400 | [diff] [blame] | 1198 | * If the port is completely idle, then allow the new qc. |
| 1199 | */ |
| 1200 | if (ap->nr_active_links == 0) |
| 1201 | return 0; |
| 1202 | |
Tejun Heo | 4bdee6c | 2008-08-13 20:24:16 +0900 | [diff] [blame] | 1203 | /* |
| 1204 | * The port is operating in host queuing mode (EDMA) with NCQ |
| 1205 | * enabled, allow multiple NCQ commands. EDMA also allows |
| 1206 | * queueing multiple DMA commands but libata core currently |
| 1207 | * doesn't allow it. |
| 1208 | */ |
| 1209 | if ((pp->pp_flags & MV_PP_FLAG_EDMA_EN) && |
| 1210 | (pp->pp_flags & MV_PP_FLAG_NCQ_EN) && ata_is_ncq(qc->tf.protocol)) |
| 1211 | return 0; |
| 1212 | |
Mark Lord | 3e4a139 | 2008-05-02 02:10:02 -0400 | [diff] [blame] | 1213 | return ATA_DEFER_PORT; |
| 1214 | } |
| 1215 | |
Mark Lord | 08da175 | 2009-02-25 15:13:03 -0500 | [diff] [blame] | 1216 | 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] | 1217 | { |
Mark Lord | 08da175 | 2009-02-25 15:13:03 -0500 | [diff] [blame] | 1218 | struct mv_port_priv *pp = ap->private_data; |
| 1219 | void __iomem *port_mmio; |
Mark Lord | 00f42ea | 2008-05-02 02:11:45 -0400 | [diff] [blame] | 1220 | |
Mark Lord | 08da175 | 2009-02-25 15:13:03 -0500 | [diff] [blame] | 1221 | u32 fiscfg, *old_fiscfg = &pp->cached.fiscfg; |
| 1222 | u32 ltmode, *old_ltmode = &pp->cached.ltmode; |
| 1223 | u32 haltcond, *old_haltcond = &pp->cached.haltcond; |
Mark Lord | 00f42ea | 2008-05-02 02:11:45 -0400 | [diff] [blame] | 1224 | |
Mark Lord | 08da175 | 2009-02-25 15:13:03 -0500 | [diff] [blame] | 1225 | ltmode = *old_ltmode & ~LTMODE_BIT8; |
| 1226 | haltcond = *old_haltcond | EDMA_ERR_DEV; |
Mark Lord | 00f42ea | 2008-05-02 02:11:45 -0400 | [diff] [blame] | 1227 | |
| 1228 | if (want_fbs) { |
Mark Lord | 08da175 | 2009-02-25 15:13:03 -0500 | [diff] [blame] | 1229 | fiscfg = *old_fiscfg | FISCFG_SINGLE_SYNC; |
| 1230 | ltmode = *old_ltmode | LTMODE_BIT8; |
Mark Lord | 4c299ca | 2008-05-02 02:16:20 -0400 | [diff] [blame] | 1231 | if (want_ncq) |
Mark Lord | 08da175 | 2009-02-25 15:13:03 -0500 | [diff] [blame] | 1232 | haltcond &= ~EDMA_ERR_DEV; |
Mark Lord | 4c299ca | 2008-05-02 02:16:20 -0400 | [diff] [blame] | 1233 | else |
Mark Lord | 08da175 | 2009-02-25 15:13:03 -0500 | [diff] [blame] | 1234 | fiscfg |= FISCFG_WAIT_DEV_ERR; |
| 1235 | } else { |
| 1236 | fiscfg = *old_fiscfg & ~(FISCFG_SINGLE_SYNC | FISCFG_WAIT_DEV_ERR); |
Mark Lord | e49856d | 2008-04-16 14:59:07 -0400 | [diff] [blame] | 1237 | } |
Mark Lord | 00f42ea | 2008-05-02 02:11:45 -0400 | [diff] [blame] | 1238 | |
Mark Lord | 08da175 | 2009-02-25 15:13:03 -0500 | [diff] [blame] | 1239 | port_mmio = mv_ap_base(ap); |
| 1240 | mv_write_cached_reg(port_mmio + FISCFG_OFS, old_fiscfg, fiscfg); |
| 1241 | mv_write_cached_reg(port_mmio + LTMODE_OFS, old_ltmode, ltmode); |
| 1242 | mv_write_cached_reg(port_mmio + EDMA_HALTCOND_OFS, old_haltcond, haltcond); |
Mark Lord | 0c58912 | 2008-01-26 18:31:16 -0500 | [diff] [blame] | 1243 | } |
Jeff Garzik | e4e7b89 | 2006-01-31 12:18:41 -0500 | [diff] [blame] | 1244 | |
Mark Lord | dd2890f | 2008-05-02 02:10:56 -0400 | [diff] [blame] | 1245 | static void mv_60x1_errata_sata25(struct ata_port *ap, int want_ncq) |
| 1246 | { |
| 1247 | struct mv_host_priv *hpriv = ap->host->private_data; |
| 1248 | u32 old, new; |
| 1249 | |
| 1250 | /* workaround for 88SX60x1 FEr SATA#25 (part 1) */ |
| 1251 | old = readl(hpriv->base + MV_GPIO_PORT_CTL_OFS); |
| 1252 | if (want_ncq) |
| 1253 | new = old | (1 << 22); |
| 1254 | else |
| 1255 | new = old & ~(1 << 22); |
| 1256 | if (new != old) |
| 1257 | writel(new, hpriv->base + MV_GPIO_PORT_CTL_OFS); |
| 1258 | } |
| 1259 | |
Mark Lord | c01e8a2 | 2009-02-25 15:14:48 -0500 | [diff] [blame] | 1260 | /** |
Mark Lord | 40f21b1 | 2009-03-10 18:51:04 -0400 | [diff] [blame^] | 1261 | * mv_bmdma_enable - set a magic bit on GEN_IIE to allow bmdma |
| 1262 | * @ap: Port being initialized |
Mark Lord | c01e8a2 | 2009-02-25 15:14:48 -0500 | [diff] [blame] | 1263 | * |
| 1264 | * There are two DMA modes on these chips: basic DMA, and EDMA. |
| 1265 | * |
| 1266 | * Bit-0 of the "EDMA RESERVED" register enables/disables use |
| 1267 | * of basic DMA on the GEN_IIE versions of the chips. |
| 1268 | * |
| 1269 | * This bit survives EDMA resets, and must be set for basic DMA |
| 1270 | * to function, and should be cleared when EDMA is active. |
| 1271 | */ |
| 1272 | static void mv_bmdma_enable_iie(struct ata_port *ap, int enable_bmdma) |
| 1273 | { |
| 1274 | struct mv_port_priv *pp = ap->private_data; |
| 1275 | u32 new, *old = &pp->cached.unknown_rsvd; |
| 1276 | |
| 1277 | if (enable_bmdma) |
| 1278 | new = *old | 1; |
| 1279 | else |
| 1280 | new = *old & ~1; |
| 1281 | mv_write_cached_reg(mv_ap_base(ap) + EDMA_UNKNOWN_RSVD_OFS, old, new); |
| 1282 | } |
| 1283 | |
Mark Lord | 00b8123 | 2009-01-30 18:47:51 -0500 | [diff] [blame] | 1284 | 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] | 1285 | { |
| 1286 | u32 cfg; |
Mark Lord | e12bef5 | 2008-03-31 19:33:56 -0400 | [diff] [blame] | 1287 | struct mv_port_priv *pp = ap->private_data; |
| 1288 | struct mv_host_priv *hpriv = ap->host->private_data; |
| 1289 | void __iomem *port_mmio = mv_ap_base(ap); |
Jeff Garzik | e4e7b89 | 2006-01-31 12:18:41 -0500 | [diff] [blame] | 1290 | |
| 1291 | /* set up non-NCQ EDMA configuration */ |
| 1292 | cfg = EDMA_CFG_Q_DEPTH; /* always 0x1f for *all* chips */ |
Mark Lord | d16ab3f | 2009-02-25 15:17:43 -0500 | [diff] [blame] | 1293 | pp->pp_flags &= |
| 1294 | ~(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] | 1295 | |
| 1296 | if (IS_GEN_I(hpriv)) |
| 1297 | cfg |= (1 << 8); /* enab config burst size mask */ |
| 1298 | |
Mark Lord | dd2890f | 2008-05-02 02:10:56 -0400 | [diff] [blame] | 1299 | else if (IS_GEN_II(hpriv)) { |
Jeff Garzik | e4e7b89 | 2006-01-31 12:18:41 -0500 | [diff] [blame] | 1300 | cfg |= EDMA_CFG_RD_BRST_EXT | EDMA_CFG_WR_BUFF_LEN; |
Mark Lord | dd2890f | 2008-05-02 02:10:56 -0400 | [diff] [blame] | 1301 | mv_60x1_errata_sata25(ap, want_ncq); |
Jeff Garzik | e4e7b89 | 2006-01-31 12:18:41 -0500 | [diff] [blame] | 1302 | |
Mark Lord | dd2890f | 2008-05-02 02:10:56 -0400 | [diff] [blame] | 1303 | } else if (IS_GEN_IIE(hpriv)) { |
Mark Lord | 00f42ea | 2008-05-02 02:11:45 -0400 | [diff] [blame] | 1304 | int want_fbs = sata_pmp_attached(ap); |
| 1305 | /* |
| 1306 | * Possible future enhancement: |
| 1307 | * |
| 1308 | * The chip can use FBS with non-NCQ, if we allow it, |
| 1309 | * But first we need to have the error handling in place |
| 1310 | * for this mode (datasheet section 7.3.15.4.2.3). |
| 1311 | * So disallow non-NCQ FBS for now. |
| 1312 | */ |
| 1313 | want_fbs &= want_ncq; |
| 1314 | |
Mark Lord | 08da175 | 2009-02-25 15:13:03 -0500 | [diff] [blame] | 1315 | mv_config_fbs(ap, want_ncq, want_fbs); |
Mark Lord | 00f42ea | 2008-05-02 02:11:45 -0400 | [diff] [blame] | 1316 | |
| 1317 | if (want_fbs) { |
| 1318 | pp->pp_flags |= MV_PP_FLAG_FBS_EN; |
| 1319 | cfg |= EDMA_CFG_EDMA_FBS; /* FIS-based switching */ |
| 1320 | } |
| 1321 | |
Jeff Garzik | e728eab | 2007-02-25 02:53:41 -0500 | [diff] [blame] | 1322 | cfg |= (1 << 23); /* do not mask PM field in rx'd FIS */ |
Mark Lord | 00b8123 | 2009-01-30 18:47:51 -0500 | [diff] [blame] | 1323 | if (want_edma) { |
| 1324 | cfg |= (1 << 22); /* enab 4-entry host queue cache */ |
| 1325 | if (!IS_SOC(hpriv)) |
| 1326 | cfg |= (1 << 18); /* enab early completion */ |
| 1327 | } |
Mark Lord | 616d4a9 | 2008-05-02 02:08:32 -0400 | [diff] [blame] | 1328 | if (hpriv->hp_flags & MV_HP_CUT_THROUGH) |
| 1329 | cfg |= (1 << 17); /* enab cut-thru (dis stor&forwrd) */ |
Mark Lord | c01e8a2 | 2009-02-25 15:14:48 -0500 | [diff] [blame] | 1330 | mv_bmdma_enable_iie(ap, !want_edma); |
Jeff Garzik | e4e7b89 | 2006-01-31 12:18:41 -0500 | [diff] [blame] | 1331 | } |
| 1332 | |
Mark Lord | 7210916 | 2008-01-26 18:31:33 -0500 | [diff] [blame] | 1333 | if (want_ncq) { |
| 1334 | cfg |= EDMA_CFG_NCQ; |
| 1335 | pp->pp_flags |= MV_PP_FLAG_NCQ_EN; |
Mark Lord | 00b8123 | 2009-01-30 18:47:51 -0500 | [diff] [blame] | 1336 | } |
Mark Lord | 7210916 | 2008-01-26 18:31:33 -0500 | [diff] [blame] | 1337 | |
Jeff Garzik | e4e7b89 | 2006-01-31 12:18:41 -0500 | [diff] [blame] | 1338 | writelfl(cfg, port_mmio + EDMA_CFG_OFS); |
| 1339 | } |
| 1340 | |
Mark Lord | da2fa9b | 2008-01-26 18:32:45 -0500 | [diff] [blame] | 1341 | static void mv_port_free_dma_mem(struct ata_port *ap) |
| 1342 | { |
| 1343 | struct mv_host_priv *hpriv = ap->host->private_data; |
| 1344 | struct mv_port_priv *pp = ap->private_data; |
Mark Lord | eb73d55 | 2008-01-29 13:24:00 -0500 | [diff] [blame] | 1345 | int tag; |
Mark Lord | da2fa9b | 2008-01-26 18:32:45 -0500 | [diff] [blame] | 1346 | |
| 1347 | if (pp->crqb) { |
| 1348 | dma_pool_free(hpriv->crqb_pool, pp->crqb, pp->crqb_dma); |
| 1349 | pp->crqb = NULL; |
| 1350 | } |
| 1351 | if (pp->crpb) { |
| 1352 | dma_pool_free(hpriv->crpb_pool, pp->crpb, pp->crpb_dma); |
| 1353 | pp->crpb = NULL; |
| 1354 | } |
Mark Lord | eb73d55 | 2008-01-29 13:24:00 -0500 | [diff] [blame] | 1355 | /* |
| 1356 | * For GEN_I, there's no NCQ, so we have only a single sg_tbl. |
| 1357 | * For later hardware, we have one unique sg_tbl per NCQ tag. |
| 1358 | */ |
| 1359 | for (tag = 0; tag < MV_MAX_Q_DEPTH; ++tag) { |
| 1360 | if (pp->sg_tbl[tag]) { |
| 1361 | if (tag == 0 || !IS_GEN_I(hpriv)) |
| 1362 | dma_pool_free(hpriv->sg_tbl_pool, |
| 1363 | pp->sg_tbl[tag], |
| 1364 | pp->sg_tbl_dma[tag]); |
| 1365 | pp->sg_tbl[tag] = NULL; |
| 1366 | } |
Mark Lord | da2fa9b | 2008-01-26 18:32:45 -0500 | [diff] [blame] | 1367 | } |
| 1368 | } |
| 1369 | |
Brett Russ | 05b308e | 2005-10-05 17:08:53 -0400 | [diff] [blame] | 1370 | /** |
| 1371 | * mv_port_start - Port specific init/start routine. |
| 1372 | * @ap: ATA channel to manipulate |
| 1373 | * |
| 1374 | * Allocate and point to DMA memory, init port private memory, |
| 1375 | * zero indices. |
| 1376 | * |
| 1377 | * LOCKING: |
| 1378 | * Inherited from caller. |
| 1379 | */ |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 1380 | static int mv_port_start(struct ata_port *ap) |
| 1381 | { |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 1382 | struct device *dev = ap->host->dev; |
| 1383 | struct mv_host_priv *hpriv = ap->host->private_data; |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 1384 | struct mv_port_priv *pp; |
James Bottomley | dde2020 | 2008-02-19 11:36:56 +0100 | [diff] [blame] | 1385 | int tag; |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 1386 | |
Tejun Heo | 24dc5f3 | 2007-01-20 16:00:28 +0900 | [diff] [blame] | 1387 | pp = devm_kzalloc(dev, sizeof(*pp), GFP_KERNEL); |
Jeff Garzik | 6037d6b | 2005-11-04 22:08:00 -0500 | [diff] [blame] | 1388 | if (!pp) |
Tejun Heo | 24dc5f3 | 2007-01-20 16:00:28 +0900 | [diff] [blame] | 1389 | return -ENOMEM; |
Mark Lord | da2fa9b | 2008-01-26 18:32:45 -0500 | [diff] [blame] | 1390 | ap->private_data = pp; |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 1391 | |
Mark Lord | da2fa9b | 2008-01-26 18:32:45 -0500 | [diff] [blame] | 1392 | pp->crqb = dma_pool_alloc(hpriv->crqb_pool, GFP_KERNEL, &pp->crqb_dma); |
| 1393 | if (!pp->crqb) |
| 1394 | return -ENOMEM; |
| 1395 | memset(pp->crqb, 0, MV_CRQB_Q_SZ); |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 1396 | |
Mark Lord | da2fa9b | 2008-01-26 18:32:45 -0500 | [diff] [blame] | 1397 | pp->crpb = dma_pool_alloc(hpriv->crpb_pool, GFP_KERNEL, &pp->crpb_dma); |
| 1398 | if (!pp->crpb) |
| 1399 | goto out_port_free_dma_mem; |
| 1400 | memset(pp->crpb, 0, MV_CRPB_Q_SZ); |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 1401 | |
Mark Lord | 3bd0a70 | 2008-06-18 12:11:16 -0400 | [diff] [blame] | 1402 | /* 6041/6081 Rev. "C0" (and newer) are okay with async notify */ |
| 1403 | if (hpriv->hp_flags & MV_HP_ERRATA_60X1C0) |
| 1404 | ap->flags |= ATA_FLAG_AN; |
Mark Lord | eb73d55 | 2008-01-29 13:24:00 -0500 | [diff] [blame] | 1405 | /* |
| 1406 | * For GEN_I, there's no NCQ, so we only allocate a single sg_tbl. |
| 1407 | * For later hardware, we need one unique sg_tbl per NCQ tag. |
| 1408 | */ |
| 1409 | for (tag = 0; tag < MV_MAX_Q_DEPTH; ++tag) { |
| 1410 | if (tag == 0 || !IS_GEN_I(hpriv)) { |
| 1411 | pp->sg_tbl[tag] = dma_pool_alloc(hpriv->sg_tbl_pool, |
| 1412 | GFP_KERNEL, &pp->sg_tbl_dma[tag]); |
| 1413 | if (!pp->sg_tbl[tag]) |
| 1414 | goto out_port_free_dma_mem; |
| 1415 | } else { |
| 1416 | pp->sg_tbl[tag] = pp->sg_tbl[0]; |
| 1417 | pp->sg_tbl_dma[tag] = pp->sg_tbl_dma[0]; |
| 1418 | } |
| 1419 | } |
Mark Lord | 08da175 | 2009-02-25 15:13:03 -0500 | [diff] [blame] | 1420 | mv_save_cached_regs(ap); |
Mark Lord | 66e57a2 | 2009-01-30 18:52:58 -0500 | [diff] [blame] | 1421 | mv_edma_cfg(ap, 0, 0); |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 1422 | return 0; |
Mark Lord | da2fa9b | 2008-01-26 18:32:45 -0500 | [diff] [blame] | 1423 | |
| 1424 | out_port_free_dma_mem: |
| 1425 | mv_port_free_dma_mem(ap); |
| 1426 | return -ENOMEM; |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 1427 | } |
| 1428 | |
Brett Russ | 05b308e | 2005-10-05 17:08:53 -0400 | [diff] [blame] | 1429 | /** |
| 1430 | * mv_port_stop - Port specific cleanup/stop routine. |
| 1431 | * @ap: ATA channel to manipulate |
| 1432 | * |
| 1433 | * Stop DMA, cleanup port memory. |
| 1434 | * |
| 1435 | * LOCKING: |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 1436 | * This routine uses the host lock to protect the DMA stop. |
Brett Russ | 05b308e | 2005-10-05 17:08:53 -0400 | [diff] [blame] | 1437 | */ |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 1438 | static void mv_port_stop(struct ata_port *ap) |
| 1439 | { |
Mark Lord | e12bef5 | 2008-03-31 19:33:56 -0400 | [diff] [blame] | 1440 | mv_stop_edma(ap); |
Mark Lord | 88e675e | 2008-05-17 13:36:30 -0400 | [diff] [blame] | 1441 | mv_enable_port_irqs(ap, 0); |
Mark Lord | da2fa9b | 2008-01-26 18:32:45 -0500 | [diff] [blame] | 1442 | mv_port_free_dma_mem(ap); |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 1443 | } |
| 1444 | |
Brett Russ | 05b308e | 2005-10-05 17:08:53 -0400 | [diff] [blame] | 1445 | /** |
| 1446 | * mv_fill_sg - Fill out the Marvell ePRD (scatter gather) entries |
| 1447 | * @qc: queued command whose SG list to source from |
| 1448 | * |
| 1449 | * Populate the SG list and mark the last entry. |
| 1450 | * |
| 1451 | * LOCKING: |
| 1452 | * Inherited from caller. |
| 1453 | */ |
Jeff Garzik | 6c08772 | 2007-10-12 00:16:23 -0400 | [diff] [blame] | 1454 | static void mv_fill_sg(struct ata_queued_cmd *qc) |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 1455 | { |
| 1456 | struct mv_port_priv *pp = qc->ap->private_data; |
Jeff Garzik | 972c26b | 2005-10-18 22:14:54 -0400 | [diff] [blame] | 1457 | struct scatterlist *sg; |
Jeff Garzik | 3be6cbd | 2007-10-18 16:21:18 -0400 | [diff] [blame] | 1458 | struct mv_sg *mv_sg, *last_sg = NULL; |
Tejun Heo | ff2aeb1 | 2007-12-05 16:43:11 +0900 | [diff] [blame] | 1459 | unsigned int si; |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 1460 | |
Mark Lord | eb73d55 | 2008-01-29 13:24:00 -0500 | [diff] [blame] | 1461 | mv_sg = pp->sg_tbl[qc->tag]; |
Tejun Heo | ff2aeb1 | 2007-12-05 16:43:11 +0900 | [diff] [blame] | 1462 | for_each_sg(qc->sg, sg, qc->n_elem, si) { |
Jeff Garzik | d88184f | 2007-02-26 01:26:06 -0500 | [diff] [blame] | 1463 | dma_addr_t addr = sg_dma_address(sg); |
| 1464 | u32 sg_len = sg_dma_len(sg); |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 1465 | |
Olof Johansson | 4007b49 | 2007-10-02 20:45:27 -0500 | [diff] [blame] | 1466 | while (sg_len) { |
| 1467 | u32 offset = addr & 0xffff; |
| 1468 | u32 len = sg_len; |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 1469 | |
Mark Lord | 32cd11a | 2009-02-01 16:50:32 -0500 | [diff] [blame] | 1470 | if (offset + len > 0x10000) |
Olof Johansson | 4007b49 | 2007-10-02 20:45:27 -0500 | [diff] [blame] | 1471 | len = 0x10000 - offset; |
Jeff Garzik | 972c26b | 2005-10-18 22:14:54 -0400 | [diff] [blame] | 1472 | |
Olof Johansson | 4007b49 | 2007-10-02 20:45:27 -0500 | [diff] [blame] | 1473 | mv_sg->addr = cpu_to_le32(addr & 0xffffffff); |
| 1474 | mv_sg->addr_hi = cpu_to_le32((addr >> 16) >> 16); |
Jeff Garzik | 6c08772 | 2007-10-12 00:16:23 -0400 | [diff] [blame] | 1475 | mv_sg->flags_size = cpu_to_le32(len & 0xffff); |
Mark Lord | 32cd11a | 2009-02-01 16:50:32 -0500 | [diff] [blame] | 1476 | mv_sg->reserved = 0; |
Olof Johansson | 4007b49 | 2007-10-02 20:45:27 -0500 | [diff] [blame] | 1477 | |
| 1478 | sg_len -= len; |
| 1479 | addr += len; |
| 1480 | |
Jeff Garzik | 3be6cbd | 2007-10-18 16:21:18 -0400 | [diff] [blame] | 1481 | last_sg = mv_sg; |
Olof Johansson | 4007b49 | 2007-10-02 20:45:27 -0500 | [diff] [blame] | 1482 | mv_sg++; |
Olof Johansson | 4007b49 | 2007-10-02 20:45:27 -0500 | [diff] [blame] | 1483 | } |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 1484 | } |
Jeff Garzik | 3be6cbd | 2007-10-18 16:21:18 -0400 | [diff] [blame] | 1485 | |
| 1486 | if (likely(last_sg)) |
| 1487 | last_sg->flags_size |= cpu_to_le32(EPRD_FLAG_END_OF_TBL); |
Mark Lord | 32cd11a | 2009-02-01 16:50:32 -0500 | [diff] [blame] | 1488 | mb(); /* ensure data structure is visible to the chipset */ |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 1489 | } |
| 1490 | |
Jeff Garzik | 5796d1c | 2007-10-26 00:03:37 -0400 | [diff] [blame] | 1491 | 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] | 1492 | { |
Mark Lord | 559eeda | 2006-05-19 16:40:15 -0400 | [diff] [blame] | 1493 | u16 tmp = data | (addr << CRQB_CMD_ADDR_SHIFT) | CRQB_CMD_CS | |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 1494 | (last ? CRQB_CMD_LAST : 0); |
Mark Lord | 559eeda | 2006-05-19 16:40:15 -0400 | [diff] [blame] | 1495 | *cmdw = cpu_to_le16(tmp); |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 1496 | } |
| 1497 | |
Brett Russ | 05b308e | 2005-10-05 17:08:53 -0400 | [diff] [blame] | 1498 | /** |
Mark Lord | da14265 | 2009-01-30 18:51:54 -0500 | [diff] [blame] | 1499 | * mv_sff_irq_clear - Clear hardware interrupt after DMA. |
| 1500 | * @ap: Port associated with this ATA transaction. |
| 1501 | * |
| 1502 | * We need this only for ATAPI bmdma transactions, |
| 1503 | * as otherwise we experience spurious interrupts |
| 1504 | * after libata-sff handles the bmdma interrupts. |
| 1505 | */ |
| 1506 | static void mv_sff_irq_clear(struct ata_port *ap) |
| 1507 | { |
| 1508 | mv_clear_and_enable_port_irqs(ap, mv_ap_base(ap), ERR_IRQ); |
| 1509 | } |
| 1510 | |
| 1511 | /** |
| 1512 | * mv_check_atapi_dma - Filter ATAPI cmds which are unsuitable for DMA. |
| 1513 | * @qc: queued command to check for chipset/DMA compatibility. |
| 1514 | * |
| 1515 | * The bmdma engines cannot handle speculative data sizes |
| 1516 | * (bytecount under/over flow). So only allow DMA for |
| 1517 | * data transfer commands with known data sizes. |
| 1518 | * |
| 1519 | * LOCKING: |
| 1520 | * Inherited from caller. |
| 1521 | */ |
| 1522 | static int mv_check_atapi_dma(struct ata_queued_cmd *qc) |
| 1523 | { |
| 1524 | struct scsi_cmnd *scmd = qc->scsicmd; |
| 1525 | |
| 1526 | if (scmd) { |
| 1527 | switch (scmd->cmnd[0]) { |
| 1528 | case READ_6: |
| 1529 | case READ_10: |
| 1530 | case READ_12: |
| 1531 | case WRITE_6: |
| 1532 | case WRITE_10: |
| 1533 | case WRITE_12: |
| 1534 | case GPCMD_READ_CD: |
| 1535 | case GPCMD_SEND_DVD_STRUCTURE: |
| 1536 | case GPCMD_SEND_CUE_SHEET: |
| 1537 | return 0; /* DMA is safe */ |
| 1538 | } |
| 1539 | } |
| 1540 | return -EOPNOTSUPP; /* use PIO instead */ |
| 1541 | } |
| 1542 | |
| 1543 | /** |
| 1544 | * mv_bmdma_setup - Set up BMDMA transaction |
| 1545 | * @qc: queued command to prepare DMA for. |
| 1546 | * |
| 1547 | * LOCKING: |
| 1548 | * Inherited from caller. |
| 1549 | */ |
| 1550 | static void mv_bmdma_setup(struct ata_queued_cmd *qc) |
| 1551 | { |
| 1552 | struct ata_port *ap = qc->ap; |
| 1553 | void __iomem *port_mmio = mv_ap_base(ap); |
| 1554 | struct mv_port_priv *pp = ap->private_data; |
| 1555 | |
| 1556 | mv_fill_sg(qc); |
| 1557 | |
| 1558 | /* clear all DMA cmd bits */ |
| 1559 | writel(0, port_mmio + BMDMA_CMD_OFS); |
| 1560 | |
| 1561 | /* load PRD table addr. */ |
| 1562 | writel((pp->sg_tbl_dma[qc->tag] >> 16) >> 16, |
| 1563 | port_mmio + BMDMA_PRD_HIGH_OFS); |
| 1564 | writelfl(pp->sg_tbl_dma[qc->tag], |
| 1565 | port_mmio + BMDMA_PRD_LOW_OFS); |
| 1566 | |
| 1567 | /* issue r/w command */ |
| 1568 | ap->ops->sff_exec_command(ap, &qc->tf); |
| 1569 | } |
| 1570 | |
| 1571 | /** |
| 1572 | * mv_bmdma_start - Start a BMDMA transaction |
| 1573 | * @qc: queued command to start DMA on. |
| 1574 | * |
| 1575 | * LOCKING: |
| 1576 | * Inherited from caller. |
| 1577 | */ |
| 1578 | static void mv_bmdma_start(struct ata_queued_cmd *qc) |
| 1579 | { |
| 1580 | struct ata_port *ap = qc->ap; |
| 1581 | void __iomem *port_mmio = mv_ap_base(ap); |
| 1582 | unsigned int rw = (qc->tf.flags & ATA_TFLAG_WRITE); |
| 1583 | u32 cmd = (rw ? 0 : ATA_DMA_WR) | ATA_DMA_START; |
| 1584 | |
| 1585 | /* start host DMA transaction */ |
| 1586 | writelfl(cmd, port_mmio + BMDMA_CMD_OFS); |
| 1587 | } |
| 1588 | |
| 1589 | /** |
| 1590 | * mv_bmdma_stop - Stop BMDMA transfer |
| 1591 | * @qc: queued command to stop DMA on. |
| 1592 | * |
| 1593 | * Clears the ATA_DMA_START flag in the bmdma control register |
| 1594 | * |
| 1595 | * LOCKING: |
| 1596 | * Inherited from caller. |
| 1597 | */ |
| 1598 | static void mv_bmdma_stop(struct ata_queued_cmd *qc) |
| 1599 | { |
| 1600 | struct ata_port *ap = qc->ap; |
| 1601 | void __iomem *port_mmio = mv_ap_base(ap); |
| 1602 | u32 cmd; |
| 1603 | |
| 1604 | /* clear start/stop bit */ |
| 1605 | cmd = readl(port_mmio + BMDMA_CMD_OFS); |
| 1606 | cmd &= ~ATA_DMA_START; |
| 1607 | writelfl(cmd, port_mmio + BMDMA_CMD_OFS); |
| 1608 | |
| 1609 | /* one-PIO-cycle guaranteed wait, per spec, for HDMA1:0 transition */ |
| 1610 | ata_sff_dma_pause(ap); |
| 1611 | } |
| 1612 | |
| 1613 | /** |
| 1614 | * mv_bmdma_status - Read BMDMA status |
| 1615 | * @ap: port for which to retrieve DMA status. |
| 1616 | * |
| 1617 | * Read and return equivalent of the sff BMDMA status register. |
| 1618 | * |
| 1619 | * LOCKING: |
| 1620 | * Inherited from caller. |
| 1621 | */ |
| 1622 | static u8 mv_bmdma_status(struct ata_port *ap) |
| 1623 | { |
| 1624 | void __iomem *port_mmio = mv_ap_base(ap); |
| 1625 | u32 reg, status; |
| 1626 | |
| 1627 | /* |
| 1628 | * Other bits are valid only if ATA_DMA_ACTIVE==0, |
| 1629 | * and the ATA_DMA_INTR bit doesn't exist. |
| 1630 | */ |
| 1631 | reg = readl(port_mmio + BMDMA_STATUS_OFS); |
| 1632 | if (reg & ATA_DMA_ACTIVE) |
| 1633 | status = ATA_DMA_ACTIVE; |
| 1634 | else |
| 1635 | status = (reg & ATA_DMA_ERR) | ATA_DMA_INTR; |
| 1636 | return status; |
| 1637 | } |
| 1638 | |
| 1639 | /** |
Brett Russ | 05b308e | 2005-10-05 17:08:53 -0400 | [diff] [blame] | 1640 | * mv_qc_prep - Host specific command preparation. |
| 1641 | * @qc: queued command to prepare |
| 1642 | * |
| 1643 | * This routine simply redirects to the general purpose routine |
| 1644 | * if command is not DMA. Else, it handles prep of the CRQB |
| 1645 | * (command request block), does some sanity checking, and calls |
| 1646 | * the SG load routine. |
| 1647 | * |
| 1648 | * LOCKING: |
| 1649 | * Inherited from caller. |
| 1650 | */ |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 1651 | static void mv_qc_prep(struct ata_queued_cmd *qc) |
| 1652 | { |
| 1653 | struct ata_port *ap = qc->ap; |
| 1654 | struct mv_port_priv *pp = ap->private_data; |
Mark Lord | e146987 | 2006-05-22 19:02:03 -0400 | [diff] [blame] | 1655 | __le16 *cw; |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 1656 | struct ata_taskfile *tf; |
| 1657 | u16 flags = 0; |
Mark Lord | a643243 | 2006-05-19 16:36:36 -0400 | [diff] [blame] | 1658 | unsigned in_index; |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 1659 | |
Mark Lord | 138bfdd | 2008-01-26 18:33:18 -0500 | [diff] [blame] | 1660 | if ((qc->tf.protocol != ATA_PROT_DMA) && |
| 1661 | (qc->tf.protocol != ATA_PROT_NCQ)) |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 1662 | return; |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 1663 | |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 1664 | /* Fill in command request block |
| 1665 | */ |
Jeff Garzik | e4e7b89 | 2006-01-31 12:18:41 -0500 | [diff] [blame] | 1666 | if (!(qc->tf.flags & ATA_TFLAG_WRITE)) |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 1667 | flags |= CRQB_FLAG_READ; |
Tejun Heo | beec7db | 2006-02-11 19:11:13 +0900 | [diff] [blame] | 1668 | WARN_ON(MV_MAX_Q_DEPTH <= qc->tag); |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 1669 | flags |= qc->tag << CRQB_TAG_SHIFT; |
Mark Lord | e49856d | 2008-04-16 14:59:07 -0400 | [diff] [blame] | 1670 | flags |= (qc->dev->link->pmp & 0xf) << CRQB_PMP_SHIFT; |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 1671 | |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 1672 | /* get current queue index from software */ |
Mark Lord | fcfb1f7 | 2008-04-19 15:06:40 -0400 | [diff] [blame] | 1673 | in_index = pp->req_idx; |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 1674 | |
Mark Lord | a643243 | 2006-05-19 16:36:36 -0400 | [diff] [blame] | 1675 | pp->crqb[in_index].sg_addr = |
Mark Lord | eb73d55 | 2008-01-29 13:24:00 -0500 | [diff] [blame] | 1676 | cpu_to_le32(pp->sg_tbl_dma[qc->tag] & 0xffffffff); |
Mark Lord | a643243 | 2006-05-19 16:36:36 -0400 | [diff] [blame] | 1677 | pp->crqb[in_index].sg_addr_hi = |
Mark Lord | eb73d55 | 2008-01-29 13:24:00 -0500 | [diff] [blame] | 1678 | cpu_to_le32((pp->sg_tbl_dma[qc->tag] >> 16) >> 16); |
Mark Lord | a643243 | 2006-05-19 16:36:36 -0400 | [diff] [blame] | 1679 | pp->crqb[in_index].ctrl_flags = cpu_to_le16(flags); |
| 1680 | |
| 1681 | cw = &pp->crqb[in_index].ata_cmd[0]; |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 1682 | tf = &qc->tf; |
| 1683 | |
| 1684 | /* Sadly, the CRQB cannot accomodate all registers--there are |
| 1685 | * only 11 bytes...so we must pick and choose required |
| 1686 | * registers based on the command. So, we drop feature and |
| 1687 | * hob_feature for [RW] DMA commands, but they are needed for |
Mark Lord | cd12e1f | 2009-01-19 18:06:28 -0500 | [diff] [blame] | 1688 | * NCQ. NCQ will drop hob_nsect, which is not needed there |
| 1689 | * (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] | 1690 | */ |
| 1691 | switch (tf->command) { |
| 1692 | case ATA_CMD_READ: |
| 1693 | case ATA_CMD_READ_EXT: |
| 1694 | case ATA_CMD_WRITE: |
| 1695 | case ATA_CMD_WRITE_EXT: |
Jens Axboe | c15d85c | 2006-02-15 15:59:25 +0100 | [diff] [blame] | 1696 | case ATA_CMD_WRITE_FUA_EXT: |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 1697 | mv_crqb_pack_cmd(cw++, tf->hob_nsect, ATA_REG_NSECT, 0); |
| 1698 | break; |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 1699 | case ATA_CMD_FPDMA_READ: |
| 1700 | case ATA_CMD_FPDMA_WRITE: |
Jeff Garzik | 8b26024 | 2005-11-12 12:32:50 -0500 | [diff] [blame] | 1701 | mv_crqb_pack_cmd(cw++, tf->hob_feature, ATA_REG_FEATURE, 0); |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 1702 | mv_crqb_pack_cmd(cw++, tf->feature, ATA_REG_FEATURE, 0); |
| 1703 | break; |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 1704 | default: |
| 1705 | /* The only other commands EDMA supports in non-queued and |
| 1706 | * non-NCQ mode are: [RW] STREAM DMA and W DMA FUA EXT, none |
| 1707 | * of which are defined/used by Linux. If we get here, this |
| 1708 | * driver needs work. |
| 1709 | * |
| 1710 | * FIXME: modify libata to give qc_prep a return value and |
| 1711 | * return error here. |
| 1712 | */ |
| 1713 | BUG_ON(tf->command); |
| 1714 | break; |
| 1715 | } |
| 1716 | mv_crqb_pack_cmd(cw++, tf->nsect, ATA_REG_NSECT, 0); |
| 1717 | mv_crqb_pack_cmd(cw++, tf->hob_lbal, ATA_REG_LBAL, 0); |
| 1718 | mv_crqb_pack_cmd(cw++, tf->lbal, ATA_REG_LBAL, 0); |
| 1719 | mv_crqb_pack_cmd(cw++, tf->hob_lbam, ATA_REG_LBAM, 0); |
| 1720 | mv_crqb_pack_cmd(cw++, tf->lbam, ATA_REG_LBAM, 0); |
| 1721 | mv_crqb_pack_cmd(cw++, tf->hob_lbah, ATA_REG_LBAH, 0); |
| 1722 | mv_crqb_pack_cmd(cw++, tf->lbah, ATA_REG_LBAH, 0); |
| 1723 | mv_crqb_pack_cmd(cw++, tf->device, ATA_REG_DEVICE, 0); |
| 1724 | mv_crqb_pack_cmd(cw++, tf->command, ATA_REG_CMD, 1); /* last */ |
| 1725 | |
Jeff Garzik | e4e7b89 | 2006-01-31 12:18:41 -0500 | [diff] [blame] | 1726 | if (!(qc->flags & ATA_QCFLAG_DMAMAP)) |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 1727 | return; |
Jeff Garzik | e4e7b89 | 2006-01-31 12:18:41 -0500 | [diff] [blame] | 1728 | mv_fill_sg(qc); |
| 1729 | } |
| 1730 | |
| 1731 | /** |
| 1732 | * mv_qc_prep_iie - Host specific command preparation. |
| 1733 | * @qc: queued command to prepare |
| 1734 | * |
| 1735 | * This routine simply redirects to the general purpose routine |
| 1736 | * if command is not DMA. Else, it handles prep of the CRQB |
| 1737 | * (command request block), does some sanity checking, and calls |
| 1738 | * the SG load routine. |
| 1739 | * |
| 1740 | * LOCKING: |
| 1741 | * Inherited from caller. |
| 1742 | */ |
| 1743 | static void mv_qc_prep_iie(struct ata_queued_cmd *qc) |
| 1744 | { |
| 1745 | struct ata_port *ap = qc->ap; |
| 1746 | struct mv_port_priv *pp = ap->private_data; |
| 1747 | struct mv_crqb_iie *crqb; |
| 1748 | struct ata_taskfile *tf; |
Mark Lord | a643243 | 2006-05-19 16:36:36 -0400 | [diff] [blame] | 1749 | unsigned in_index; |
Jeff Garzik | e4e7b89 | 2006-01-31 12:18:41 -0500 | [diff] [blame] | 1750 | u32 flags = 0; |
| 1751 | |
Mark Lord | 138bfdd | 2008-01-26 18:33:18 -0500 | [diff] [blame] | 1752 | if ((qc->tf.protocol != ATA_PROT_DMA) && |
| 1753 | (qc->tf.protocol != ATA_PROT_NCQ)) |
Jeff Garzik | e4e7b89 | 2006-01-31 12:18:41 -0500 | [diff] [blame] | 1754 | return; |
| 1755 | |
Mark Lord | e12bef5 | 2008-03-31 19:33:56 -0400 | [diff] [blame] | 1756 | /* Fill in Gen IIE command request block */ |
Jeff Garzik | e4e7b89 | 2006-01-31 12:18:41 -0500 | [diff] [blame] | 1757 | if (!(qc->tf.flags & ATA_TFLAG_WRITE)) |
| 1758 | flags |= CRQB_FLAG_READ; |
| 1759 | |
Tejun Heo | beec7db | 2006-02-11 19:11:13 +0900 | [diff] [blame] | 1760 | WARN_ON(MV_MAX_Q_DEPTH <= qc->tag); |
Jeff Garzik | e4e7b89 | 2006-01-31 12:18:41 -0500 | [diff] [blame] | 1761 | flags |= qc->tag << CRQB_TAG_SHIFT; |
Mark Lord | 8c0aeb4 | 2008-01-26 18:31:48 -0500 | [diff] [blame] | 1762 | flags |= qc->tag << CRQB_HOSTQ_SHIFT; |
Mark Lord | e49856d | 2008-04-16 14:59:07 -0400 | [diff] [blame] | 1763 | flags |= (qc->dev->link->pmp & 0xf) << CRQB_PMP_SHIFT; |
Jeff Garzik | e4e7b89 | 2006-01-31 12:18:41 -0500 | [diff] [blame] | 1764 | |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 1765 | /* get current queue index from software */ |
Mark Lord | fcfb1f7 | 2008-04-19 15:06:40 -0400 | [diff] [blame] | 1766 | in_index = pp->req_idx; |
Mark Lord | a643243 | 2006-05-19 16:36:36 -0400 | [diff] [blame] | 1767 | |
| 1768 | crqb = (struct mv_crqb_iie *) &pp->crqb[in_index]; |
Mark Lord | eb73d55 | 2008-01-29 13:24:00 -0500 | [diff] [blame] | 1769 | crqb->addr = cpu_to_le32(pp->sg_tbl_dma[qc->tag] & 0xffffffff); |
| 1770 | 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] | 1771 | crqb->flags = cpu_to_le32(flags); |
| 1772 | |
| 1773 | tf = &qc->tf; |
| 1774 | crqb->ata_cmd[0] = cpu_to_le32( |
| 1775 | (tf->command << 16) | |
| 1776 | (tf->feature << 24) |
| 1777 | ); |
| 1778 | crqb->ata_cmd[1] = cpu_to_le32( |
| 1779 | (tf->lbal << 0) | |
| 1780 | (tf->lbam << 8) | |
| 1781 | (tf->lbah << 16) | |
| 1782 | (tf->device << 24) |
| 1783 | ); |
| 1784 | crqb->ata_cmd[2] = cpu_to_le32( |
| 1785 | (tf->hob_lbal << 0) | |
| 1786 | (tf->hob_lbam << 8) | |
| 1787 | (tf->hob_lbah << 16) | |
| 1788 | (tf->hob_feature << 24) |
| 1789 | ); |
| 1790 | crqb->ata_cmd[3] = cpu_to_le32( |
| 1791 | (tf->nsect << 0) | |
| 1792 | (tf->hob_nsect << 8) |
| 1793 | ); |
| 1794 | |
| 1795 | if (!(qc->flags & ATA_QCFLAG_DMAMAP)) |
| 1796 | return; |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 1797 | mv_fill_sg(qc); |
| 1798 | } |
| 1799 | |
Brett Russ | 05b308e | 2005-10-05 17:08:53 -0400 | [diff] [blame] | 1800 | /** |
Mark Lord | d16ab3f | 2009-02-25 15:17:43 -0500 | [diff] [blame] | 1801 | * mv_sff_check_status - fetch device status, if valid |
| 1802 | * @ap: ATA port to fetch status from |
| 1803 | * |
| 1804 | * When using command issue via mv_qc_issue_fis(), |
| 1805 | * the initial ATA_BUSY state does not show up in the |
| 1806 | * ATA status (shadow) register. This can confuse libata! |
| 1807 | * |
| 1808 | * So we have a hook here to fake ATA_BUSY for that situation, |
| 1809 | * until the first time a BUSY, DRQ, or ERR bit is seen. |
| 1810 | * |
| 1811 | * The rest of the time, it simply returns the ATA status register. |
| 1812 | */ |
| 1813 | static u8 mv_sff_check_status(struct ata_port *ap) |
| 1814 | { |
| 1815 | u8 stat = ioread8(ap->ioaddr.status_addr); |
| 1816 | struct mv_port_priv *pp = ap->private_data; |
| 1817 | |
| 1818 | if (pp->pp_flags & MV_PP_FLAG_FAKE_ATA_BUSY) { |
| 1819 | if (stat & (ATA_BUSY | ATA_DRQ | ATA_ERR)) |
| 1820 | pp->pp_flags &= ~MV_PP_FLAG_FAKE_ATA_BUSY; |
| 1821 | else |
| 1822 | stat = ATA_BUSY; |
| 1823 | } |
| 1824 | return stat; |
| 1825 | } |
| 1826 | |
| 1827 | /** |
Mark Lord | 70f8b79 | 2009-02-25 15:19:20 -0500 | [diff] [blame] | 1828 | * mv_send_fis - Send a FIS, using the "Vendor-Unique FIS" register |
| 1829 | * @fis: fis to be sent |
| 1830 | * @nwords: number of 32-bit words in the fis |
| 1831 | */ |
| 1832 | static unsigned int mv_send_fis(struct ata_port *ap, u32 *fis, int nwords) |
| 1833 | { |
| 1834 | void __iomem *port_mmio = mv_ap_base(ap); |
| 1835 | u32 ifctl, old_ifctl, ifstat; |
| 1836 | int i, timeout = 200, final_word = nwords - 1; |
| 1837 | |
| 1838 | /* Initiate FIS transmission mode */ |
| 1839 | old_ifctl = readl(port_mmio + SATA_IFCTL_OFS); |
| 1840 | ifctl = 0x100 | (old_ifctl & 0xf); |
| 1841 | writelfl(ifctl, port_mmio + SATA_IFCTL_OFS); |
| 1842 | |
| 1843 | /* Send all words of the FIS except for the final word */ |
| 1844 | for (i = 0; i < final_word; ++i) |
| 1845 | writel(fis[i], port_mmio + VENDOR_UNIQUE_FIS_OFS); |
| 1846 | |
| 1847 | /* Flag end-of-transmission, and then send the final word */ |
| 1848 | writelfl(ifctl | 0x200, port_mmio + SATA_IFCTL_OFS); |
| 1849 | writelfl(fis[final_word], port_mmio + VENDOR_UNIQUE_FIS_OFS); |
| 1850 | |
| 1851 | /* |
| 1852 | * Wait for FIS transmission to complete. |
| 1853 | * This typically takes just a single iteration. |
| 1854 | */ |
| 1855 | do { |
| 1856 | ifstat = readl(port_mmio + SATA_IFSTAT_OFS); |
| 1857 | } while (!(ifstat & 0x1000) && --timeout); |
| 1858 | |
| 1859 | /* Restore original port configuration */ |
| 1860 | writelfl(old_ifctl, port_mmio + SATA_IFCTL_OFS); |
| 1861 | |
| 1862 | /* See if it worked */ |
| 1863 | if ((ifstat & 0x3000) != 0x1000) { |
| 1864 | ata_port_printk(ap, KERN_WARNING, |
| 1865 | "%s transmission error, ifstat=%08x\n", |
| 1866 | __func__, ifstat); |
| 1867 | return AC_ERR_OTHER; |
| 1868 | } |
| 1869 | return 0; |
| 1870 | } |
| 1871 | |
| 1872 | /** |
| 1873 | * mv_qc_issue_fis - Issue a command directly as a FIS |
| 1874 | * @qc: queued command to start |
| 1875 | * |
| 1876 | * Note that the ATA shadow registers are not updated |
| 1877 | * after command issue, so the device will appear "READY" |
| 1878 | * if polled, even while it is BUSY processing the command. |
| 1879 | * |
| 1880 | * So we use a status hook to fake ATA_BUSY until the drive changes state. |
| 1881 | * |
| 1882 | * Note: we don't get updated shadow regs on *completion* |
| 1883 | * of non-data commands. So avoid sending them via this function, |
| 1884 | * as they will appear to have completed immediately. |
| 1885 | * |
| 1886 | * GEN_IIE has special registers that we could get the result tf from, |
| 1887 | * but earlier chipsets do not. For now, we ignore those registers. |
| 1888 | */ |
| 1889 | static unsigned int mv_qc_issue_fis(struct ata_queued_cmd *qc) |
| 1890 | { |
| 1891 | struct ata_port *ap = qc->ap; |
| 1892 | struct mv_port_priv *pp = ap->private_data; |
| 1893 | struct ata_link *link = qc->dev->link; |
| 1894 | u32 fis[5]; |
| 1895 | int err = 0; |
| 1896 | |
| 1897 | ata_tf_to_fis(&qc->tf, link->pmp, 1, (void *)fis); |
| 1898 | err = mv_send_fis(ap, fis, sizeof(fis) / sizeof(fis[0])); |
| 1899 | if (err) |
| 1900 | return err; |
| 1901 | |
| 1902 | switch (qc->tf.protocol) { |
| 1903 | case ATAPI_PROT_PIO: |
| 1904 | pp->pp_flags |= MV_PP_FLAG_FAKE_ATA_BUSY; |
| 1905 | /* fall through */ |
| 1906 | case ATAPI_PROT_NODATA: |
| 1907 | ap->hsm_task_state = HSM_ST_FIRST; |
| 1908 | break; |
| 1909 | case ATA_PROT_PIO: |
| 1910 | pp->pp_flags |= MV_PP_FLAG_FAKE_ATA_BUSY; |
| 1911 | if (qc->tf.flags & ATA_TFLAG_WRITE) |
| 1912 | ap->hsm_task_state = HSM_ST_FIRST; |
| 1913 | else |
| 1914 | ap->hsm_task_state = HSM_ST; |
| 1915 | break; |
| 1916 | default: |
| 1917 | ap->hsm_task_state = HSM_ST_LAST; |
| 1918 | break; |
| 1919 | } |
| 1920 | |
| 1921 | if (qc->tf.flags & ATA_TFLAG_POLLING) |
| 1922 | ata_pio_queue_task(ap, qc, 0); |
| 1923 | return 0; |
| 1924 | } |
| 1925 | |
| 1926 | /** |
Brett Russ | 05b308e | 2005-10-05 17:08:53 -0400 | [diff] [blame] | 1927 | * mv_qc_issue - Initiate a command to the host |
| 1928 | * @qc: queued command to start |
| 1929 | * |
| 1930 | * This routine simply redirects to the general purpose routine |
| 1931 | * if command is not DMA. Else, it sanity checks our local |
| 1932 | * caches of the request producer/consumer indices then enables |
| 1933 | * DMA and bumps the request producer index. |
| 1934 | * |
| 1935 | * LOCKING: |
| 1936 | * Inherited from caller. |
| 1937 | */ |
Tejun Heo | 9a3d9eb | 2006-01-23 13:09:36 +0900 | [diff] [blame] | 1938 | static unsigned int mv_qc_issue(struct ata_queued_cmd *qc) |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 1939 | { |
Mark Lord | f48765c | 2009-01-30 18:48:41 -0500 | [diff] [blame] | 1940 | static int limit_warnings = 10; |
Jeff Garzik | c5d3e45 | 2007-07-11 18:30:50 -0400 | [diff] [blame] | 1941 | struct ata_port *ap = qc->ap; |
| 1942 | void __iomem *port_mmio = mv_ap_base(ap); |
| 1943 | struct mv_port_priv *pp = ap->private_data; |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 1944 | u32 in_index; |
Mark Lord | 42ed893 | 2009-02-25 15:15:39 -0500 | [diff] [blame] | 1945 | unsigned int port_irqs; |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 1946 | |
Mark Lord | d16ab3f | 2009-02-25 15:17:43 -0500 | [diff] [blame] | 1947 | pp->pp_flags &= ~MV_PP_FLAG_FAKE_ATA_BUSY; /* paranoia */ |
| 1948 | |
Mark Lord | f48765c | 2009-01-30 18:48:41 -0500 | [diff] [blame] | 1949 | switch (qc->tf.protocol) { |
| 1950 | case ATA_PROT_DMA: |
| 1951 | case ATA_PROT_NCQ: |
| 1952 | mv_start_edma(ap, port_mmio, pp, qc->tf.protocol); |
| 1953 | pp->req_idx = (pp->req_idx + 1) & MV_MAX_Q_DEPTH_MASK; |
| 1954 | in_index = pp->req_idx << EDMA_REQ_Q_PTR_SHIFT; |
| 1955 | |
| 1956 | /* Write the request in pointer to kick the EDMA to life */ |
| 1957 | writelfl((pp->crqb_dma & EDMA_REQ_Q_BASE_LO_MASK) | in_index, |
| 1958 | port_mmio + EDMA_REQ_Q_IN_PTR_OFS); |
| 1959 | return 0; |
| 1960 | |
| 1961 | case ATA_PROT_PIO: |
Mark Lord | c6112bd | 2008-06-18 12:13:02 -0400 | [diff] [blame] | 1962 | /* |
| 1963 | * Errata SATA#16, SATA#24: warn if multiple DRQs expected. |
| 1964 | * |
| 1965 | * Someday, we might implement special polling workarounds |
| 1966 | * for these, but it all seems rather unnecessary since we |
| 1967 | * normally use only DMA for commands which transfer more |
| 1968 | * than a single block of data. |
| 1969 | * |
| 1970 | * Much of the time, this could just work regardless. |
| 1971 | * So for now, just log the incident, and allow the attempt. |
| 1972 | */ |
Mark Lord | c7843e8 | 2008-06-18 21:57:42 -0400 | [diff] [blame] | 1973 | if (limit_warnings > 0 && (qc->nbytes / qc->sect_size) > 1) { |
Mark Lord | c6112bd | 2008-06-18 12:13:02 -0400 | [diff] [blame] | 1974 | --limit_warnings; |
| 1975 | ata_link_printk(qc->dev->link, KERN_WARNING, DRV_NAME |
| 1976 | ": attempting PIO w/multiple DRQ: " |
| 1977 | "this may fail due to h/w errata\n"); |
| 1978 | } |
Mark Lord | f48765c | 2009-01-30 18:48:41 -0500 | [diff] [blame] | 1979 | /* drop through */ |
Mark Lord | 42ed893 | 2009-02-25 15:15:39 -0500 | [diff] [blame] | 1980 | case ATA_PROT_NODATA: |
Mark Lord | f48765c | 2009-01-30 18:48:41 -0500 | [diff] [blame] | 1981 | case ATAPI_PROT_PIO: |
Mark Lord | 42ed893 | 2009-02-25 15:15:39 -0500 | [diff] [blame] | 1982 | case ATAPI_PROT_NODATA: |
| 1983 | if (ap->flags & ATA_FLAG_PIO_POLLING) |
| 1984 | qc->tf.flags |= ATA_TFLAG_POLLING; |
| 1985 | break; |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 1986 | } |
Mark Lord | 42ed893 | 2009-02-25 15:15:39 -0500 | [diff] [blame] | 1987 | |
| 1988 | if (qc->tf.flags & ATA_TFLAG_POLLING) |
| 1989 | port_irqs = ERR_IRQ; /* mask device interrupt when polling */ |
| 1990 | else |
| 1991 | port_irqs = ERR_IRQ | DONE_IRQ; /* unmask all interrupts */ |
| 1992 | |
| 1993 | /* |
| 1994 | * We're about to send a non-EDMA capable command to the |
| 1995 | * port. Turn off EDMA so there won't be problems accessing |
| 1996 | * shadow block, etc registers. |
| 1997 | */ |
| 1998 | mv_stop_edma(ap); |
| 1999 | mv_clear_and_enable_port_irqs(ap, mv_ap_base(ap), port_irqs); |
| 2000 | mv_pmp_select(ap, qc->dev->link->pmp); |
Mark Lord | 70f8b79 | 2009-02-25 15:19:20 -0500 | [diff] [blame] | 2001 | |
| 2002 | if (qc->tf.command == ATA_CMD_READ_LOG_EXT) { |
| 2003 | struct mv_host_priv *hpriv = ap->host->private_data; |
| 2004 | /* |
| 2005 | * Workaround for 88SX60x1 FEr SATA#25 (part 2). |
Mark Lord | 40f21b1 | 2009-03-10 18:51:04 -0400 | [diff] [blame^] | 2006 | * |
Mark Lord | 70f8b79 | 2009-02-25 15:19:20 -0500 | [diff] [blame] | 2007 | * After any NCQ error, the READ_LOG_EXT command |
| 2008 | * from libata-eh *must* use mv_qc_issue_fis(). |
| 2009 | * Otherwise it might fail, due to chip errata. |
| 2010 | * |
| 2011 | * Rather than special-case it, we'll just *always* |
| 2012 | * use this method here for READ_LOG_EXT, making for |
| 2013 | * easier testing. |
| 2014 | */ |
| 2015 | if (IS_GEN_II(hpriv)) |
| 2016 | return mv_qc_issue_fis(qc); |
| 2017 | } |
Mark Lord | 42ed893 | 2009-02-25 15:15:39 -0500 | [diff] [blame] | 2018 | return ata_sff_qc_issue(qc); |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 2019 | } |
| 2020 | |
Mark Lord | 8f767f8 | 2008-04-19 14:53:07 -0400 | [diff] [blame] | 2021 | static struct ata_queued_cmd *mv_get_active_qc(struct ata_port *ap) |
| 2022 | { |
| 2023 | struct mv_port_priv *pp = ap->private_data; |
| 2024 | struct ata_queued_cmd *qc; |
| 2025 | |
| 2026 | if (pp->pp_flags & MV_PP_FLAG_NCQ_EN) |
| 2027 | return NULL; |
| 2028 | qc = ata_qc_from_tag(ap, ap->link.active_tag); |
Mark Lord | 95db505 | 2009-01-30 18:49:29 -0500 | [diff] [blame] | 2029 | if (qc) { |
| 2030 | if (qc->tf.flags & ATA_TFLAG_POLLING) |
| 2031 | qc = NULL; |
| 2032 | else if (!(qc->flags & ATA_QCFLAG_ACTIVE)) |
| 2033 | qc = NULL; |
| 2034 | } |
Mark Lord | 8f767f8 | 2008-04-19 14:53:07 -0400 | [diff] [blame] | 2035 | return qc; |
| 2036 | } |
| 2037 | |
Mark Lord | 29d187b | 2008-05-02 02:15:37 -0400 | [diff] [blame] | 2038 | static void mv_pmp_error_handler(struct ata_port *ap) |
| 2039 | { |
| 2040 | unsigned int pmp, pmp_map; |
| 2041 | struct mv_port_priv *pp = ap->private_data; |
| 2042 | |
| 2043 | if (pp->pp_flags & MV_PP_FLAG_DELAYED_EH) { |
| 2044 | /* |
| 2045 | * Perform NCQ error analysis on failed PMPs |
| 2046 | * before we freeze the port entirely. |
| 2047 | * |
| 2048 | * The failed PMPs are marked earlier by mv_pmp_eh_prep(). |
| 2049 | */ |
| 2050 | pmp_map = pp->delayed_eh_pmp_map; |
| 2051 | pp->pp_flags &= ~MV_PP_FLAG_DELAYED_EH; |
| 2052 | for (pmp = 0; pmp_map != 0; pmp++) { |
| 2053 | unsigned int this_pmp = (1 << pmp); |
| 2054 | if (pmp_map & this_pmp) { |
| 2055 | struct ata_link *link = &ap->pmp_link[pmp]; |
| 2056 | pmp_map &= ~this_pmp; |
| 2057 | ata_eh_analyze_ncq_error(link); |
| 2058 | } |
| 2059 | } |
| 2060 | ata_port_freeze(ap); |
| 2061 | } |
| 2062 | sata_pmp_error_handler(ap); |
| 2063 | } |
| 2064 | |
Mark Lord | 4c299ca | 2008-05-02 02:16:20 -0400 | [diff] [blame] | 2065 | static unsigned int mv_get_err_pmp_map(struct ata_port *ap) |
| 2066 | { |
| 2067 | void __iomem *port_mmio = mv_ap_base(ap); |
| 2068 | |
| 2069 | return readl(port_mmio + SATA_TESTCTL_OFS) >> 16; |
| 2070 | } |
| 2071 | |
Mark Lord | 4c299ca | 2008-05-02 02:16:20 -0400 | [diff] [blame] | 2072 | static void mv_pmp_eh_prep(struct ata_port *ap, unsigned int pmp_map) |
| 2073 | { |
| 2074 | struct ata_eh_info *ehi; |
| 2075 | unsigned int pmp; |
| 2076 | |
| 2077 | /* |
| 2078 | * Initialize EH info for PMPs which saw device errors |
| 2079 | */ |
| 2080 | ehi = &ap->link.eh_info; |
| 2081 | for (pmp = 0; pmp_map != 0; pmp++) { |
| 2082 | unsigned int this_pmp = (1 << pmp); |
| 2083 | if (pmp_map & this_pmp) { |
| 2084 | struct ata_link *link = &ap->pmp_link[pmp]; |
| 2085 | |
| 2086 | pmp_map &= ~this_pmp; |
| 2087 | ehi = &link->eh_info; |
| 2088 | ata_ehi_clear_desc(ehi); |
| 2089 | ata_ehi_push_desc(ehi, "dev err"); |
| 2090 | ehi->err_mask |= AC_ERR_DEV; |
| 2091 | ehi->action |= ATA_EH_RESET; |
| 2092 | ata_link_abort(link); |
| 2093 | } |
| 2094 | } |
| 2095 | } |
| 2096 | |
Mark Lord | 06aaca3 | 2008-05-19 09:01:24 -0400 | [diff] [blame] | 2097 | static int mv_req_q_empty(struct ata_port *ap) |
| 2098 | { |
| 2099 | void __iomem *port_mmio = mv_ap_base(ap); |
| 2100 | u32 in_ptr, out_ptr; |
| 2101 | |
| 2102 | in_ptr = (readl(port_mmio + EDMA_REQ_Q_IN_PTR_OFS) |
| 2103 | >> EDMA_REQ_Q_PTR_SHIFT) & MV_MAX_Q_DEPTH_MASK; |
| 2104 | out_ptr = (readl(port_mmio + EDMA_REQ_Q_OUT_PTR_OFS) |
| 2105 | >> EDMA_REQ_Q_PTR_SHIFT) & MV_MAX_Q_DEPTH_MASK; |
| 2106 | return (in_ptr == out_ptr); /* 1 == queue_is_empty */ |
| 2107 | } |
| 2108 | |
Mark Lord | 4c299ca | 2008-05-02 02:16:20 -0400 | [diff] [blame] | 2109 | static int mv_handle_fbs_ncq_dev_err(struct ata_port *ap) |
| 2110 | { |
| 2111 | struct mv_port_priv *pp = ap->private_data; |
| 2112 | int failed_links; |
| 2113 | unsigned int old_map, new_map; |
| 2114 | |
| 2115 | /* |
| 2116 | * Device error during FBS+NCQ operation: |
| 2117 | * |
| 2118 | * Set a port flag to prevent further I/O being enqueued. |
| 2119 | * Leave the EDMA running to drain outstanding commands from this port. |
| 2120 | * Perform the post-mortem/EH only when all responses are complete. |
| 2121 | * Follow recovery sequence from 6042/7042 datasheet (7.3.15.4.2.2). |
| 2122 | */ |
| 2123 | if (!(pp->pp_flags & MV_PP_FLAG_DELAYED_EH)) { |
| 2124 | pp->pp_flags |= MV_PP_FLAG_DELAYED_EH; |
| 2125 | pp->delayed_eh_pmp_map = 0; |
| 2126 | } |
| 2127 | old_map = pp->delayed_eh_pmp_map; |
| 2128 | new_map = old_map | mv_get_err_pmp_map(ap); |
| 2129 | |
| 2130 | if (old_map != new_map) { |
| 2131 | pp->delayed_eh_pmp_map = new_map; |
| 2132 | mv_pmp_eh_prep(ap, new_map & ~old_map); |
| 2133 | } |
Mark Lord | c46938c | 2008-05-02 14:02:28 -0400 | [diff] [blame] | 2134 | failed_links = hweight16(new_map); |
Mark Lord | 4c299ca | 2008-05-02 02:16:20 -0400 | [diff] [blame] | 2135 | |
| 2136 | ata_port_printk(ap, KERN_INFO, "%s: pmp_map=%04x qc_map=%04x " |
| 2137 | "failed_links=%d nr_active_links=%d\n", |
| 2138 | __func__, pp->delayed_eh_pmp_map, |
| 2139 | ap->qc_active, failed_links, |
| 2140 | ap->nr_active_links); |
| 2141 | |
Mark Lord | 06aaca3 | 2008-05-19 09:01:24 -0400 | [diff] [blame] | 2142 | if (ap->nr_active_links <= failed_links && mv_req_q_empty(ap)) { |
Mark Lord | 4c299ca | 2008-05-02 02:16:20 -0400 | [diff] [blame] | 2143 | mv_process_crpb_entries(ap, pp); |
| 2144 | mv_stop_edma(ap); |
| 2145 | mv_eh_freeze(ap); |
| 2146 | ata_port_printk(ap, KERN_INFO, "%s: done\n", __func__); |
| 2147 | return 1; /* handled */ |
| 2148 | } |
| 2149 | ata_port_printk(ap, KERN_INFO, "%s: waiting\n", __func__); |
| 2150 | return 1; /* handled */ |
| 2151 | } |
| 2152 | |
| 2153 | static int mv_handle_fbs_non_ncq_dev_err(struct ata_port *ap) |
| 2154 | { |
| 2155 | /* |
| 2156 | * Possible future enhancement: |
| 2157 | * |
| 2158 | * FBS+non-NCQ operation is not yet implemented. |
| 2159 | * See related notes in mv_edma_cfg(). |
| 2160 | * |
| 2161 | * Device error during FBS+non-NCQ operation: |
| 2162 | * |
| 2163 | * We need to snapshot the shadow registers for each failed command. |
| 2164 | * Follow recovery sequence from 6042/7042 datasheet (7.3.15.4.2.3). |
| 2165 | */ |
| 2166 | return 0; /* not handled */ |
| 2167 | } |
| 2168 | |
| 2169 | static int mv_handle_dev_err(struct ata_port *ap, u32 edma_err_cause) |
| 2170 | { |
| 2171 | struct mv_port_priv *pp = ap->private_data; |
| 2172 | |
| 2173 | if (!(pp->pp_flags & MV_PP_FLAG_EDMA_EN)) |
| 2174 | return 0; /* EDMA was not active: not handled */ |
| 2175 | if (!(pp->pp_flags & MV_PP_FLAG_FBS_EN)) |
| 2176 | return 0; /* FBS was not active: not handled */ |
| 2177 | |
| 2178 | if (!(edma_err_cause & EDMA_ERR_DEV)) |
| 2179 | return 0; /* non DEV error: not handled */ |
| 2180 | edma_err_cause &= ~EDMA_ERR_IRQ_TRANSIENT; |
| 2181 | if (edma_err_cause & ~(EDMA_ERR_DEV | EDMA_ERR_SELF_DIS)) |
| 2182 | return 0; /* other problems: not handled */ |
| 2183 | |
| 2184 | if (pp->pp_flags & MV_PP_FLAG_NCQ_EN) { |
| 2185 | /* |
| 2186 | * EDMA should NOT have self-disabled for this case. |
| 2187 | * If it did, then something is wrong elsewhere, |
| 2188 | * and we cannot handle it here. |
| 2189 | */ |
| 2190 | if (edma_err_cause & EDMA_ERR_SELF_DIS) { |
| 2191 | ata_port_printk(ap, KERN_WARNING, |
| 2192 | "%s: err_cause=0x%x pp_flags=0x%x\n", |
| 2193 | __func__, edma_err_cause, pp->pp_flags); |
| 2194 | return 0; /* not handled */ |
| 2195 | } |
| 2196 | return mv_handle_fbs_ncq_dev_err(ap); |
| 2197 | } else { |
| 2198 | /* |
| 2199 | * EDMA should have self-disabled for this case. |
| 2200 | * If it did not, then something is wrong elsewhere, |
| 2201 | * and we cannot handle it here. |
| 2202 | */ |
| 2203 | if (!(edma_err_cause & EDMA_ERR_SELF_DIS)) { |
| 2204 | ata_port_printk(ap, KERN_WARNING, |
| 2205 | "%s: err_cause=0x%x pp_flags=0x%x\n", |
| 2206 | __func__, edma_err_cause, pp->pp_flags); |
| 2207 | return 0; /* not handled */ |
| 2208 | } |
| 2209 | return mv_handle_fbs_non_ncq_dev_err(ap); |
| 2210 | } |
| 2211 | return 0; /* not handled */ |
| 2212 | } |
| 2213 | |
Mark Lord | a901032 | 2008-05-02 02:14:02 -0400 | [diff] [blame] | 2214 | 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] | 2215 | { |
Mark Lord | 8f767f8 | 2008-04-19 14:53:07 -0400 | [diff] [blame] | 2216 | struct ata_eh_info *ehi = &ap->link.eh_info; |
Mark Lord | a901032 | 2008-05-02 02:14:02 -0400 | [diff] [blame] | 2217 | char *when = "idle"; |
Mark Lord | 8f767f8 | 2008-04-19 14:53:07 -0400 | [diff] [blame] | 2218 | |
Mark Lord | 8f767f8 | 2008-04-19 14:53:07 -0400 | [diff] [blame] | 2219 | ata_ehi_clear_desc(ehi); |
Mark Lord | a901032 | 2008-05-02 02:14:02 -0400 | [diff] [blame] | 2220 | if (!ap || (ap->flags & ATA_FLAG_DISABLED)) { |
| 2221 | when = "disabled"; |
| 2222 | } else if (edma_was_enabled) { |
| 2223 | when = "EDMA enabled"; |
Mark Lord | 8f767f8 | 2008-04-19 14:53:07 -0400 | [diff] [blame] | 2224 | } else { |
| 2225 | struct ata_queued_cmd *qc = ata_qc_from_tag(ap, ap->link.active_tag); |
| 2226 | if (qc && (qc->tf.flags & ATA_TFLAG_POLLING)) |
Mark Lord | a901032 | 2008-05-02 02:14:02 -0400 | [diff] [blame] | 2227 | when = "polling"; |
Mark Lord | 8f767f8 | 2008-04-19 14:53:07 -0400 | [diff] [blame] | 2228 | } |
Mark Lord | a901032 | 2008-05-02 02:14:02 -0400 | [diff] [blame] | 2229 | ata_ehi_push_desc(ehi, "unexpected device interrupt while %s", when); |
Mark Lord | 8f767f8 | 2008-04-19 14:53:07 -0400 | [diff] [blame] | 2230 | ehi->err_mask |= AC_ERR_OTHER; |
| 2231 | ehi->action |= ATA_EH_RESET; |
| 2232 | ata_port_freeze(ap); |
| 2233 | } |
| 2234 | |
Brett Russ | 05b308e | 2005-10-05 17:08:53 -0400 | [diff] [blame] | 2235 | /** |
Brett Russ | 05b308e | 2005-10-05 17:08:53 -0400 | [diff] [blame] | 2236 | * mv_err_intr - Handle error interrupts on the port |
| 2237 | * @ap: ATA channel to manipulate |
| 2238 | * |
Mark Lord | 8d07379 | 2008-04-19 15:07:49 -0400 | [diff] [blame] | 2239 | * Most cases require a full reset of the chip's state machine, |
| 2240 | * which also performs a COMRESET. |
| 2241 | * Also, if the port disabled DMA, update our cached copy to match. |
Brett Russ | 05b308e | 2005-10-05 17:08:53 -0400 | [diff] [blame] | 2242 | * |
| 2243 | * LOCKING: |
| 2244 | * Inherited from caller. |
| 2245 | */ |
Mark Lord | 37b9046 | 2008-05-02 02:12:34 -0400 | [diff] [blame] | 2246 | static void mv_err_intr(struct ata_port *ap) |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 2247 | { |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 2248 | void __iomem *port_mmio = mv_ap_base(ap); |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 2249 | u32 edma_err_cause, eh_freeze_mask, serr = 0; |
Mark Lord | e400607 | 2008-05-14 09:19:30 -0400 | [diff] [blame] | 2250 | u32 fis_cause = 0; |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 2251 | struct mv_port_priv *pp = ap->private_data; |
| 2252 | struct mv_host_priv *hpriv = ap->host->private_data; |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 2253 | unsigned int action = 0, err_mask = 0; |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 2254 | struct ata_eh_info *ehi = &ap->link.eh_info; |
Mark Lord | 37b9046 | 2008-05-02 02:12:34 -0400 | [diff] [blame] | 2255 | struct ata_queued_cmd *qc; |
| 2256 | int abort = 0; |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 2257 | |
Mark Lord | 8d07379 | 2008-04-19 15:07:49 -0400 | [diff] [blame] | 2258 | /* |
Mark Lord | 37b9046 | 2008-05-02 02:12:34 -0400 | [diff] [blame] | 2259 | * Read and clear the SError and err_cause bits. |
Mark Lord | e400607 | 2008-05-14 09:19:30 -0400 | [diff] [blame] | 2260 | * For GenIIe, if EDMA_ERR_TRANS_IRQ_7 is set, we also must read/clear |
| 2261 | * the FIS_IRQ_CAUSE register before clearing edma_err_cause. |
Mark Lord | 8d07379 | 2008-04-19 15:07:49 -0400 | [diff] [blame] | 2262 | */ |
Mark Lord | 37b9046 | 2008-05-02 02:12:34 -0400 | [diff] [blame] | 2263 | sata_scr_read(&ap->link, SCR_ERROR, &serr); |
| 2264 | sata_scr_write_flush(&ap->link, SCR_ERROR, serr); |
| 2265 | |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 2266 | edma_err_cause = readl(port_mmio + EDMA_ERR_IRQ_CAUSE_OFS); |
Mark Lord | e400607 | 2008-05-14 09:19:30 -0400 | [diff] [blame] | 2267 | if (IS_GEN_IIE(hpriv) && (edma_err_cause & EDMA_ERR_TRANS_IRQ_7)) { |
| 2268 | fis_cause = readl(port_mmio + SATA_FIS_IRQ_CAUSE_OFS); |
| 2269 | writelfl(~fis_cause, port_mmio + SATA_FIS_IRQ_CAUSE_OFS); |
| 2270 | } |
Mark Lord | 8d07379 | 2008-04-19 15:07:49 -0400 | [diff] [blame] | 2271 | writelfl(~edma_err_cause, port_mmio + EDMA_ERR_IRQ_CAUSE_OFS); |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 2272 | |
Mark Lord | 4c299ca | 2008-05-02 02:16:20 -0400 | [diff] [blame] | 2273 | if (edma_err_cause & EDMA_ERR_DEV) { |
| 2274 | /* |
| 2275 | * Device errors during FIS-based switching operation |
| 2276 | * require special handling. |
| 2277 | */ |
| 2278 | if (mv_handle_dev_err(ap, edma_err_cause)) |
| 2279 | return; |
| 2280 | } |
| 2281 | |
Mark Lord | 37b9046 | 2008-05-02 02:12:34 -0400 | [diff] [blame] | 2282 | qc = mv_get_active_qc(ap); |
| 2283 | ata_ehi_clear_desc(ehi); |
| 2284 | ata_ehi_push_desc(ehi, "edma_err_cause=%08x pp_flags=%08x", |
| 2285 | edma_err_cause, pp->pp_flags); |
Mark Lord | e400607 | 2008-05-14 09:19:30 -0400 | [diff] [blame] | 2286 | |
Mark Lord | c443c50 | 2008-05-14 09:24:39 -0400 | [diff] [blame] | 2287 | 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] | 2288 | ata_ehi_push_desc(ehi, "fis_cause=%08x", fis_cause); |
Mark Lord | c443c50 | 2008-05-14 09:24:39 -0400 | [diff] [blame] | 2289 | if (fis_cause & SATA_FIS_IRQ_AN) { |
| 2290 | u32 ec = edma_err_cause & |
| 2291 | ~(EDMA_ERR_TRANS_IRQ_7 | EDMA_ERR_IRQ_TRANSIENT); |
| 2292 | sata_async_notification(ap); |
| 2293 | if (!ec) |
| 2294 | return; /* Just an AN; no need for the nukes */ |
| 2295 | ata_ehi_push_desc(ehi, "SDB notify"); |
| 2296 | } |
| 2297 | } |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 2298 | /* |
Mark Lord | 352fab7 | 2008-04-19 14:43:42 -0400 | [diff] [blame] | 2299 | * All generations share these EDMA error cause bits: |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 2300 | */ |
Mark Lord | 37b9046 | 2008-05-02 02:12:34 -0400 | [diff] [blame] | 2301 | if (edma_err_cause & EDMA_ERR_DEV) { |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 2302 | err_mask |= AC_ERR_DEV; |
Mark Lord | 37b9046 | 2008-05-02 02:12:34 -0400 | [diff] [blame] | 2303 | action |= ATA_EH_RESET; |
| 2304 | ata_ehi_push_desc(ehi, "dev error"); |
| 2305 | } |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 2306 | if (edma_err_cause & (EDMA_ERR_D_PAR | EDMA_ERR_PRD_PAR | |
Jeff Garzik | 6c1153e | 2007-07-13 15:20:15 -0400 | [diff] [blame] | 2307 | EDMA_ERR_CRQB_PAR | EDMA_ERR_CRPB_PAR | |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 2308 | EDMA_ERR_INTRL_PAR)) { |
| 2309 | err_mask |= AC_ERR_ATA_BUS; |
Tejun Heo | cf48062 | 2008-01-24 00:05:14 +0900 | [diff] [blame] | 2310 | action |= ATA_EH_RESET; |
Tejun Heo | b64bbc3 | 2007-07-16 14:29:39 +0900 | [diff] [blame] | 2311 | ata_ehi_push_desc(ehi, "parity error"); |
Brett Russ | afb0edd | 2005-10-05 17:08:42 -0400 | [diff] [blame] | 2312 | } |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 2313 | if (edma_err_cause & (EDMA_ERR_DEV_DCON | EDMA_ERR_DEV_CON)) { |
| 2314 | ata_ehi_hotplugged(ehi); |
| 2315 | ata_ehi_push_desc(ehi, edma_err_cause & EDMA_ERR_DEV_DCON ? |
Tejun Heo | b64bbc3 | 2007-07-16 14:29:39 +0900 | [diff] [blame] | 2316 | "dev disconnect" : "dev connect"); |
Tejun Heo | cf48062 | 2008-01-24 00:05:14 +0900 | [diff] [blame] | 2317 | action |= ATA_EH_RESET; |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 2318 | } |
| 2319 | |
Mark Lord | 352fab7 | 2008-04-19 14:43:42 -0400 | [diff] [blame] | 2320 | /* |
| 2321 | * Gen-I has a different SELF_DIS bit, |
| 2322 | * different FREEZE bits, and no SERR bit: |
| 2323 | */ |
Jeff Garzik | ee9ccdf | 2007-07-12 15:51:22 -0400 | [diff] [blame] | 2324 | if (IS_GEN_I(hpriv)) { |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 2325 | eh_freeze_mask = EDMA_EH_FREEZE_5; |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 2326 | if (edma_err_cause & EDMA_ERR_SELF_DIS_5) { |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 2327 | pp->pp_flags &= ~MV_PP_FLAG_EDMA_EN; |
Tejun Heo | b64bbc3 | 2007-07-16 14:29:39 +0900 | [diff] [blame] | 2328 | ata_ehi_push_desc(ehi, "EDMA self-disable"); |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 2329 | } |
| 2330 | } else { |
| 2331 | eh_freeze_mask = EDMA_EH_FREEZE; |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 2332 | if (edma_err_cause & EDMA_ERR_SELF_DIS) { |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 2333 | pp->pp_flags &= ~MV_PP_FLAG_EDMA_EN; |
Tejun Heo | b64bbc3 | 2007-07-16 14:29:39 +0900 | [diff] [blame] | 2334 | ata_ehi_push_desc(ehi, "EDMA self-disable"); |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 2335 | } |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 2336 | if (edma_err_cause & EDMA_ERR_SERR) { |
Mark Lord | 8d07379 | 2008-04-19 15:07:49 -0400 | [diff] [blame] | 2337 | ata_ehi_push_desc(ehi, "SError=%08x", serr); |
| 2338 | err_mask |= AC_ERR_ATA_BUS; |
Tejun Heo | cf48062 | 2008-01-24 00:05:14 +0900 | [diff] [blame] | 2339 | action |= ATA_EH_RESET; |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 2340 | } |
| 2341 | } |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 2342 | |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 2343 | if (!err_mask) { |
| 2344 | err_mask = AC_ERR_OTHER; |
Tejun Heo | cf48062 | 2008-01-24 00:05:14 +0900 | [diff] [blame] | 2345 | action |= ATA_EH_RESET; |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 2346 | } |
| 2347 | |
| 2348 | ehi->serror |= serr; |
| 2349 | ehi->action |= action; |
| 2350 | |
| 2351 | if (qc) |
| 2352 | qc->err_mask |= err_mask; |
| 2353 | else |
| 2354 | ehi->err_mask |= err_mask; |
| 2355 | |
Mark Lord | 37b9046 | 2008-05-02 02:12:34 -0400 | [diff] [blame] | 2356 | if (err_mask == AC_ERR_DEV) { |
| 2357 | /* |
| 2358 | * Cannot do ata_port_freeze() here, |
| 2359 | * because it would kill PIO access, |
| 2360 | * which is needed for further diagnosis. |
| 2361 | */ |
| 2362 | mv_eh_freeze(ap); |
| 2363 | abort = 1; |
| 2364 | } else if (edma_err_cause & eh_freeze_mask) { |
| 2365 | /* |
| 2366 | * Note to self: ata_port_freeze() calls ata_port_abort() |
| 2367 | */ |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 2368 | ata_port_freeze(ap); |
Mark Lord | 37b9046 | 2008-05-02 02:12:34 -0400 | [diff] [blame] | 2369 | } else { |
| 2370 | abort = 1; |
| 2371 | } |
| 2372 | |
| 2373 | if (abort) { |
| 2374 | if (qc) |
| 2375 | ata_link_abort(qc->dev->link); |
| 2376 | else |
| 2377 | ata_port_abort(ap); |
| 2378 | } |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 2379 | } |
| 2380 | |
Mark Lord | fcfb1f7 | 2008-04-19 15:06:40 -0400 | [diff] [blame] | 2381 | static void mv_process_crpb_response(struct ata_port *ap, |
| 2382 | struct mv_crpb *response, unsigned int tag, int ncq_enabled) |
| 2383 | { |
| 2384 | struct ata_queued_cmd *qc = ata_qc_from_tag(ap, tag); |
| 2385 | |
| 2386 | if (qc) { |
| 2387 | u8 ata_status; |
| 2388 | u16 edma_status = le16_to_cpu(response->flags); |
| 2389 | /* |
| 2390 | * edma_status from a response queue entry: |
| 2391 | * LSB is from EDMA_ERR_IRQ_CAUSE_OFS (non-NCQ only). |
| 2392 | * MSB is saved ATA status from command completion. |
| 2393 | */ |
| 2394 | if (!ncq_enabled) { |
| 2395 | u8 err_cause = edma_status & 0xff & ~EDMA_ERR_DEV; |
| 2396 | if (err_cause) { |
| 2397 | /* |
| 2398 | * Error will be seen/handled by mv_err_intr(). |
| 2399 | * So do nothing at all here. |
| 2400 | */ |
| 2401 | return; |
| 2402 | } |
| 2403 | } |
| 2404 | ata_status = edma_status >> CRPB_FLAG_STATUS_SHIFT; |
Mark Lord | 37b9046 | 2008-05-02 02:12:34 -0400 | [diff] [blame] | 2405 | if (!ac_err_mask(ata_status)) |
| 2406 | ata_qc_complete(qc); |
| 2407 | /* else: leave it for mv_err_intr() */ |
Mark Lord | fcfb1f7 | 2008-04-19 15:06:40 -0400 | [diff] [blame] | 2408 | } else { |
| 2409 | ata_port_printk(ap, KERN_ERR, "%s: no qc for tag=%d\n", |
| 2410 | __func__, tag); |
| 2411 | } |
| 2412 | } |
| 2413 | |
| 2414 | 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] | 2415 | { |
| 2416 | void __iomem *port_mmio = mv_ap_base(ap); |
| 2417 | struct mv_host_priv *hpriv = ap->host->private_data; |
Mark Lord | fcfb1f7 | 2008-04-19 15:06:40 -0400 | [diff] [blame] | 2418 | u32 in_index; |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 2419 | bool work_done = false; |
Mark Lord | fcfb1f7 | 2008-04-19 15:06:40 -0400 | [diff] [blame] | 2420 | int ncq_enabled = (pp->pp_flags & MV_PP_FLAG_NCQ_EN); |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 2421 | |
Mark Lord | fcfb1f7 | 2008-04-19 15:06:40 -0400 | [diff] [blame] | 2422 | /* Get the hardware queue position index */ |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 2423 | in_index = (readl(port_mmio + EDMA_RSP_Q_IN_PTR_OFS) |
| 2424 | >> EDMA_RSP_Q_PTR_SHIFT) & MV_MAX_Q_DEPTH_MASK; |
| 2425 | |
Mark Lord | fcfb1f7 | 2008-04-19 15:06:40 -0400 | [diff] [blame] | 2426 | /* Process new responses from since the last time we looked */ |
| 2427 | while (in_index != pp->resp_idx) { |
Jeff Garzik | 6c1153e | 2007-07-13 15:20:15 -0400 | [diff] [blame] | 2428 | unsigned int tag; |
Mark Lord | fcfb1f7 | 2008-04-19 15:06:40 -0400 | [diff] [blame] | 2429 | struct mv_crpb *response = &pp->crpb[pp->resp_idx]; |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 2430 | |
Mark Lord | fcfb1f7 | 2008-04-19 15:06:40 -0400 | [diff] [blame] | 2431 | pp->resp_idx = (pp->resp_idx + 1) & MV_MAX_Q_DEPTH_MASK; |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 2432 | |
Mark Lord | fcfb1f7 | 2008-04-19 15:06:40 -0400 | [diff] [blame] | 2433 | if (IS_GEN_I(hpriv)) { |
| 2434 | /* 50xx: no NCQ, only one command active at a time */ |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 2435 | tag = ap->link.active_tag; |
Mark Lord | fcfb1f7 | 2008-04-19 15:06:40 -0400 | [diff] [blame] | 2436 | } else { |
| 2437 | /* Gen II/IIE: get command tag from CRPB entry */ |
| 2438 | tag = le16_to_cpu(response->id) & 0x1f; |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 2439 | } |
Mark Lord | fcfb1f7 | 2008-04-19 15:06:40 -0400 | [diff] [blame] | 2440 | mv_process_crpb_response(ap, response, tag, ncq_enabled); |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 2441 | work_done = true; |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 2442 | } |
| 2443 | |
Mark Lord | 352fab7 | 2008-04-19 14:43:42 -0400 | [diff] [blame] | 2444 | /* Update the software queue position index in hardware */ |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 2445 | if (work_done) |
| 2446 | writelfl((pp->crpb_dma & EDMA_RSP_Q_BASE_LO_MASK) | |
Mark Lord | fcfb1f7 | 2008-04-19 15:06:40 -0400 | [diff] [blame] | 2447 | (pp->resp_idx << EDMA_RSP_Q_PTR_SHIFT), |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 2448 | port_mmio + EDMA_RSP_Q_OUT_PTR_OFS); |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 2449 | } |
| 2450 | |
Mark Lord | a901032 | 2008-05-02 02:14:02 -0400 | [diff] [blame] | 2451 | static void mv_port_intr(struct ata_port *ap, u32 port_cause) |
| 2452 | { |
| 2453 | struct mv_port_priv *pp; |
| 2454 | int edma_was_enabled; |
| 2455 | |
| 2456 | if (!ap || (ap->flags & ATA_FLAG_DISABLED)) { |
| 2457 | mv_unexpected_intr(ap, 0); |
| 2458 | return; |
| 2459 | } |
| 2460 | /* |
| 2461 | * Grab a snapshot of the EDMA_EN flag setting, |
| 2462 | * so that we have a consistent view for this port, |
| 2463 | * even if something we call of our routines changes it. |
| 2464 | */ |
| 2465 | pp = ap->private_data; |
| 2466 | edma_was_enabled = (pp->pp_flags & MV_PP_FLAG_EDMA_EN); |
| 2467 | /* |
| 2468 | * Process completed CRPB response(s) before other events. |
| 2469 | */ |
| 2470 | if (edma_was_enabled && (port_cause & DONE_IRQ)) { |
| 2471 | mv_process_crpb_entries(ap, pp); |
Mark Lord | 4c299ca | 2008-05-02 02:16:20 -0400 | [diff] [blame] | 2472 | if (pp->pp_flags & MV_PP_FLAG_DELAYED_EH) |
| 2473 | mv_handle_fbs_ncq_dev_err(ap); |
Mark Lord | a901032 | 2008-05-02 02:14:02 -0400 | [diff] [blame] | 2474 | } |
| 2475 | /* |
| 2476 | * Handle chip-reported errors, or continue on to handle PIO. |
| 2477 | */ |
| 2478 | if (unlikely(port_cause & ERR_IRQ)) { |
| 2479 | mv_err_intr(ap); |
| 2480 | } else if (!edma_was_enabled) { |
| 2481 | struct ata_queued_cmd *qc = mv_get_active_qc(ap); |
| 2482 | if (qc) |
| 2483 | ata_sff_host_intr(ap, qc); |
| 2484 | else |
| 2485 | mv_unexpected_intr(ap, edma_was_enabled); |
| 2486 | } |
| 2487 | } |
| 2488 | |
Brett Russ | 05b308e | 2005-10-05 17:08:53 -0400 | [diff] [blame] | 2489 | /** |
| 2490 | * mv_host_intr - Handle all interrupts on the given host controller |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 2491 | * @host: host specific structure |
Mark Lord | 7368f91 | 2008-04-25 11:24:24 -0400 | [diff] [blame] | 2492 | * @main_irq_cause: Main interrupt cause register for the chip. |
Brett Russ | 05b308e | 2005-10-05 17:08:53 -0400 | [diff] [blame] | 2493 | * |
| 2494 | * LOCKING: |
| 2495 | * Inherited from caller. |
| 2496 | */ |
Mark Lord | 7368f91 | 2008-04-25 11:24:24 -0400 | [diff] [blame] | 2497 | 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] | 2498 | { |
Saeed Bishara | f351b2d | 2008-02-01 18:08:03 -0500 | [diff] [blame] | 2499 | struct mv_host_priv *hpriv = host->private_data; |
Mark Lord | eabd5eb | 2008-05-02 02:13:27 -0400 | [diff] [blame] | 2500 | void __iomem *mmio = hpriv->base, *hc_mmio; |
Mark Lord | a3718c1 | 2008-04-19 15:07:18 -0400 | [diff] [blame] | 2501 | unsigned int handled = 0, port; |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 2502 | |
Mark Lord | a3718c1 | 2008-04-19 15:07:18 -0400 | [diff] [blame] | 2503 | for (port = 0; port < hpriv->n_ports; port++) { |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 2504 | struct ata_port *ap = host->ports[port]; |
Mark Lord | eabd5eb | 2008-05-02 02:13:27 -0400 | [diff] [blame] | 2505 | unsigned int p, shift, hardport, port_cause; |
| 2506 | |
Mark Lord | a3718c1 | 2008-04-19 15:07:18 -0400 | [diff] [blame] | 2507 | MV_PORT_TO_SHIFT_AND_HARDPORT(port, shift, hardport); |
Mark Lord | a3718c1 | 2008-04-19 15:07:18 -0400 | [diff] [blame] | 2508 | /* |
Mark Lord | eabd5eb | 2008-05-02 02:13:27 -0400 | [diff] [blame] | 2509 | * Each hc within the host has its own hc_irq_cause register, |
| 2510 | * where the interrupting ports bits get ack'd. |
Mark Lord | a3718c1 | 2008-04-19 15:07:18 -0400 | [diff] [blame] | 2511 | */ |
Mark Lord | eabd5eb | 2008-05-02 02:13:27 -0400 | [diff] [blame] | 2512 | if (hardport == 0) { /* first port on this hc ? */ |
| 2513 | u32 hc_cause = (main_irq_cause >> shift) & HC0_IRQ_PEND; |
| 2514 | u32 port_mask, ack_irqs; |
| 2515 | /* |
| 2516 | * Skip this entire hc if nothing pending for any ports |
| 2517 | */ |
| 2518 | if (!hc_cause) { |
| 2519 | port += MV_PORTS_PER_HC - 1; |
| 2520 | continue; |
| 2521 | } |
| 2522 | /* |
| 2523 | * We don't need/want to read the hc_irq_cause register, |
| 2524 | * because doing so hurts performance, and |
| 2525 | * main_irq_cause already gives us everything we need. |
| 2526 | * |
| 2527 | * But we do have to *write* to the hc_irq_cause to ack |
| 2528 | * the ports that we are handling this time through. |
| 2529 | * |
| 2530 | * This requires that we create a bitmap for those |
| 2531 | * ports which interrupted us, and use that bitmap |
| 2532 | * to ack (only) those ports via hc_irq_cause. |
| 2533 | */ |
| 2534 | ack_irqs = 0; |
| 2535 | for (p = 0; p < MV_PORTS_PER_HC; ++p) { |
| 2536 | if ((port + p) >= hpriv->n_ports) |
| 2537 | break; |
| 2538 | port_mask = (DONE_IRQ | ERR_IRQ) << (p * 2); |
| 2539 | if (hc_cause & port_mask) |
| 2540 | ack_irqs |= (DMA_IRQ | DEV_IRQ) << p; |
| 2541 | } |
Mark Lord | a3718c1 | 2008-04-19 15:07:18 -0400 | [diff] [blame] | 2542 | hc_mmio = mv_hc_base_from_port(mmio, port); |
Mark Lord | eabd5eb | 2008-05-02 02:13:27 -0400 | [diff] [blame] | 2543 | writelfl(~ack_irqs, hc_mmio + HC_IRQ_CAUSE_OFS); |
Mark Lord | a3718c1 | 2008-04-19 15:07:18 -0400 | [diff] [blame] | 2544 | handled = 1; |
| 2545 | } |
Mark Lord | a901032 | 2008-05-02 02:14:02 -0400 | [diff] [blame] | 2546 | /* |
| 2547 | * Handle interrupts signalled for this port: |
| 2548 | */ |
Mark Lord | eabd5eb | 2008-05-02 02:13:27 -0400 | [diff] [blame] | 2549 | port_cause = (main_irq_cause >> shift) & (DONE_IRQ | ERR_IRQ); |
Mark Lord | a901032 | 2008-05-02 02:14:02 -0400 | [diff] [blame] | 2550 | if (port_cause) |
| 2551 | mv_port_intr(ap, port_cause); |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 2552 | } |
Mark Lord | a3718c1 | 2008-04-19 15:07:18 -0400 | [diff] [blame] | 2553 | return handled; |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 2554 | } |
| 2555 | |
Mark Lord | a3718c1 | 2008-04-19 15:07:18 -0400 | [diff] [blame] | 2556 | static int mv_pci_error(struct ata_host *host, void __iomem *mmio) |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 2557 | { |
Mark Lord | 02a121d | 2007-12-01 13:07:22 -0500 | [diff] [blame] | 2558 | struct mv_host_priv *hpriv = host->private_data; |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 2559 | struct ata_port *ap; |
| 2560 | struct ata_queued_cmd *qc; |
| 2561 | struct ata_eh_info *ehi; |
| 2562 | unsigned int i, err_mask, printed = 0; |
| 2563 | u32 err_cause; |
| 2564 | |
Mark Lord | 02a121d | 2007-12-01 13:07:22 -0500 | [diff] [blame] | 2565 | err_cause = readl(mmio + hpriv->irq_cause_ofs); |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 2566 | |
| 2567 | dev_printk(KERN_ERR, host->dev, "PCI ERROR; PCI IRQ cause=0x%08x\n", |
| 2568 | err_cause); |
| 2569 | |
| 2570 | DPRINTK("All regs @ PCI error\n"); |
| 2571 | mv_dump_all_regs(mmio, -1, to_pci_dev(host->dev)); |
| 2572 | |
Mark Lord | 02a121d | 2007-12-01 13:07:22 -0500 | [diff] [blame] | 2573 | writelfl(0, mmio + hpriv->irq_cause_ofs); |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 2574 | |
| 2575 | for (i = 0; i < host->n_ports; i++) { |
| 2576 | ap = host->ports[i]; |
Tejun Heo | 936fd73 | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 2577 | if (!ata_link_offline(&ap->link)) { |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 2578 | ehi = &ap->link.eh_info; |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 2579 | ata_ehi_clear_desc(ehi); |
| 2580 | if (!printed++) |
| 2581 | ata_ehi_push_desc(ehi, |
| 2582 | "PCI err cause 0x%08x", err_cause); |
| 2583 | err_mask = AC_ERR_HOST_BUS; |
Tejun Heo | cf48062 | 2008-01-24 00:05:14 +0900 | [diff] [blame] | 2584 | ehi->action = ATA_EH_RESET; |
Tejun Heo | 9af5c9c | 2007-08-06 18:36:22 +0900 | [diff] [blame] | 2585 | qc = ata_qc_from_tag(ap, ap->link.active_tag); |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 2586 | if (qc) |
| 2587 | qc->err_mask |= err_mask; |
| 2588 | else |
| 2589 | ehi->err_mask |= err_mask; |
| 2590 | |
| 2591 | ata_port_freeze(ap); |
| 2592 | } |
| 2593 | } |
Mark Lord | a3718c1 | 2008-04-19 15:07:18 -0400 | [diff] [blame] | 2594 | return 1; /* handled */ |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 2595 | } |
| 2596 | |
Brett Russ | 05b308e | 2005-10-05 17:08:53 -0400 | [diff] [blame] | 2597 | /** |
Jeff Garzik | c5d3e45 | 2007-07-11 18:30:50 -0400 | [diff] [blame] | 2598 | * mv_interrupt - Main interrupt event handler |
Brett Russ | 05b308e | 2005-10-05 17:08:53 -0400 | [diff] [blame] | 2599 | * @irq: unused |
| 2600 | * @dev_instance: private data; in this case the host structure |
Brett Russ | 05b308e | 2005-10-05 17:08:53 -0400 | [diff] [blame] | 2601 | * |
| 2602 | * Read the read only register to determine if any host |
| 2603 | * controllers have pending interrupts. If so, call lower level |
| 2604 | * routine to handle. Also check for PCI errors which are only |
| 2605 | * reported here. |
| 2606 | * |
Jeff Garzik | 8b26024 | 2005-11-12 12:32:50 -0500 | [diff] [blame] | 2607 | * LOCKING: |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 2608 | * This routine holds the host lock while processing pending |
Brett Russ | 05b308e | 2005-10-05 17:08:53 -0400 | [diff] [blame] | 2609 | * interrupts. |
| 2610 | */ |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 2611 | static irqreturn_t mv_interrupt(int irq, void *dev_instance) |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 2612 | { |
Jeff Garzik | cca3974 | 2006-08-24 03:19:22 -0400 | [diff] [blame] | 2613 | struct ata_host *host = dev_instance; |
Saeed Bishara | f351b2d | 2008-02-01 18:08:03 -0500 | [diff] [blame] | 2614 | struct mv_host_priv *hpriv = host->private_data; |
Mark Lord | a3718c1 | 2008-04-19 15:07:18 -0400 | [diff] [blame] | 2615 | unsigned int handled = 0; |
Mark Lord | 6d3c30e | 2009-01-21 10:31:29 -0500 | [diff] [blame] | 2616 | int using_msi = hpriv->hp_flags & MV_HP_FLAG_MSI; |
Mark Lord | 96e2c48 | 2008-05-17 13:38:00 -0400 | [diff] [blame] | 2617 | u32 main_irq_cause, pending_irqs; |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 2618 | |
Mark Lord | 646a4da | 2008-01-26 18:30:37 -0500 | [diff] [blame] | 2619 | spin_lock(&host->lock); |
Mark Lord | 6d3c30e | 2009-01-21 10:31:29 -0500 | [diff] [blame] | 2620 | |
| 2621 | /* for MSI: block new interrupts while in here */ |
| 2622 | if (using_msi) |
| 2623 | writel(0, hpriv->main_irq_mask_addr); |
| 2624 | |
Mark Lord | 7368f91 | 2008-04-25 11:24:24 -0400 | [diff] [blame] | 2625 | main_irq_cause = readl(hpriv->main_irq_cause_addr); |
Mark Lord | 96e2c48 | 2008-05-17 13:38:00 -0400 | [diff] [blame] | 2626 | pending_irqs = main_irq_cause & hpriv->main_irq_mask; |
Mark Lord | 352fab7 | 2008-04-19 14:43:42 -0400 | [diff] [blame] | 2627 | /* |
| 2628 | * Deal with cases where we either have nothing pending, or have read |
| 2629 | * a bogus register value which can indicate HW removal or PCI fault. |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 2630 | */ |
Mark Lord | a44253d | 2008-05-17 13:37:07 -0400 | [diff] [blame] | 2631 | if (pending_irqs && main_irq_cause != 0xffffffffU) { |
Mark Lord | 1f39847 | 2008-05-27 17:54:48 -0400 | [diff] [blame] | 2632 | if (unlikely((pending_irqs & PCI_ERR) && !IS_SOC(hpriv))) |
Mark Lord | a3718c1 | 2008-04-19 15:07:18 -0400 | [diff] [blame] | 2633 | handled = mv_pci_error(host, hpriv->base); |
| 2634 | else |
Mark Lord | a44253d | 2008-05-17 13:37:07 -0400 | [diff] [blame] | 2635 | handled = mv_host_intr(host, pending_irqs); |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 2636 | } |
Mark Lord | 6d3c30e | 2009-01-21 10:31:29 -0500 | [diff] [blame] | 2637 | |
| 2638 | /* for MSI: unmask; interrupt cause bits will retrigger now */ |
| 2639 | if (using_msi) |
| 2640 | writel(hpriv->main_irq_mask, hpriv->main_irq_mask_addr); |
| 2641 | |
Mark Lord | 9d51af7 | 2009-03-10 16:28:51 -0400 | [diff] [blame] | 2642 | spin_unlock(&host->lock); |
| 2643 | |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 2644 | return IRQ_RETVAL(handled); |
| 2645 | } |
| 2646 | |
Jeff Garzik | c9d3913 | 2005-11-13 17:47:51 -0500 | [diff] [blame] | 2647 | static unsigned int mv5_scr_offset(unsigned int sc_reg_in) |
| 2648 | { |
| 2649 | unsigned int ofs; |
| 2650 | |
| 2651 | switch (sc_reg_in) { |
| 2652 | case SCR_STATUS: |
| 2653 | case SCR_ERROR: |
| 2654 | case SCR_CONTROL: |
| 2655 | ofs = sc_reg_in * sizeof(u32); |
| 2656 | break; |
| 2657 | default: |
| 2658 | ofs = 0xffffffffU; |
| 2659 | break; |
| 2660 | } |
| 2661 | return ofs; |
| 2662 | } |
| 2663 | |
Tejun Heo | 82ef04f | 2008-07-31 17:02:40 +0900 | [diff] [blame] | 2664 | 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] | 2665 | { |
Tejun Heo | 82ef04f | 2008-07-31 17:02:40 +0900 | [diff] [blame] | 2666 | struct mv_host_priv *hpriv = link->ap->host->private_data; |
Saeed Bishara | f351b2d | 2008-02-01 18:08:03 -0500 | [diff] [blame] | 2667 | void __iomem *mmio = hpriv->base; |
Tejun Heo | 82ef04f | 2008-07-31 17:02:40 +0900 | [diff] [blame] | 2668 | void __iomem *addr = mv5_phy_base(mmio, link->ap->port_no); |
Jeff Garzik | c9d3913 | 2005-11-13 17:47:51 -0500 | [diff] [blame] | 2669 | unsigned int ofs = mv5_scr_offset(sc_reg_in); |
| 2670 | |
Tejun Heo | da3dbb1 | 2007-07-16 14:29:40 +0900 | [diff] [blame] | 2671 | if (ofs != 0xffffffffU) { |
| 2672 | *val = readl(addr + ofs); |
| 2673 | return 0; |
| 2674 | } else |
| 2675 | return -EINVAL; |
Jeff Garzik | c9d3913 | 2005-11-13 17:47:51 -0500 | [diff] [blame] | 2676 | } |
| 2677 | |
Tejun Heo | 82ef04f | 2008-07-31 17:02:40 +0900 | [diff] [blame] | 2678 | 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] | 2679 | { |
Tejun Heo | 82ef04f | 2008-07-31 17:02:40 +0900 | [diff] [blame] | 2680 | struct mv_host_priv *hpriv = link->ap->host->private_data; |
Saeed Bishara | f351b2d | 2008-02-01 18:08:03 -0500 | [diff] [blame] | 2681 | void __iomem *mmio = hpriv->base; |
Tejun Heo | 82ef04f | 2008-07-31 17:02:40 +0900 | [diff] [blame] | 2682 | void __iomem *addr = mv5_phy_base(mmio, link->ap->port_no); |
Jeff Garzik | c9d3913 | 2005-11-13 17:47:51 -0500 | [diff] [blame] | 2683 | unsigned int ofs = mv5_scr_offset(sc_reg_in); |
| 2684 | |
Tejun Heo | da3dbb1 | 2007-07-16 14:29:40 +0900 | [diff] [blame] | 2685 | if (ofs != 0xffffffffU) { |
Tejun Heo | 0d5ff56 | 2007-02-01 15:06:36 +0900 | [diff] [blame] | 2686 | writelfl(val, addr + ofs); |
Tejun Heo | da3dbb1 | 2007-07-16 14:29:40 +0900 | [diff] [blame] | 2687 | return 0; |
| 2688 | } else |
| 2689 | return -EINVAL; |
Jeff Garzik | c9d3913 | 2005-11-13 17:47:51 -0500 | [diff] [blame] | 2690 | } |
| 2691 | |
Saeed Bishara | 7bb3c52 | 2008-01-30 11:50:45 -1100 | [diff] [blame] | 2692 | static void mv5_reset_bus(struct ata_host *host, void __iomem *mmio) |
Jeff Garzik | 522479f | 2005-11-12 22:14:02 -0500 | [diff] [blame] | 2693 | { |
Saeed Bishara | 7bb3c52 | 2008-01-30 11:50:45 -1100 | [diff] [blame] | 2694 | struct pci_dev *pdev = to_pci_dev(host->dev); |
Jeff Garzik | 522479f | 2005-11-12 22:14:02 -0500 | [diff] [blame] | 2695 | int early_5080; |
| 2696 | |
Auke Kok | 44c1013 | 2007-06-08 15:46:36 -0700 | [diff] [blame] | 2697 | early_5080 = (pdev->device == 0x5080) && (pdev->revision == 0); |
Jeff Garzik | 522479f | 2005-11-12 22:14:02 -0500 | [diff] [blame] | 2698 | |
| 2699 | if (!early_5080) { |
| 2700 | u32 tmp = readl(mmio + MV_PCI_EXP_ROM_BAR_CTL); |
| 2701 | tmp |= (1 << 0); |
| 2702 | writel(tmp, mmio + MV_PCI_EXP_ROM_BAR_CTL); |
| 2703 | } |
| 2704 | |
Saeed Bishara | 7bb3c52 | 2008-01-30 11:50:45 -1100 | [diff] [blame] | 2705 | mv_reset_pci_bus(host, mmio); |
Jeff Garzik | 522479f | 2005-11-12 22:14:02 -0500 | [diff] [blame] | 2706 | } |
| 2707 | |
| 2708 | static void mv5_reset_flash(struct mv_host_priv *hpriv, void __iomem *mmio) |
| 2709 | { |
Mark Lord | 8e7decd | 2008-05-02 02:07:51 -0400 | [diff] [blame] | 2710 | writel(0x0fcfffff, mmio + MV_FLASH_CTL_OFS); |
Jeff Garzik | 522479f | 2005-11-12 22:14:02 -0500 | [diff] [blame] | 2711 | } |
| 2712 | |
Jeff Garzik | 47c2b67 | 2005-11-12 21:13:17 -0500 | [diff] [blame] | 2713 | static void mv5_read_preamp(struct mv_host_priv *hpriv, int idx, |
Jeff Garzik | ba3fe8f | 2005-11-12 19:08:48 -0500 | [diff] [blame] | 2714 | void __iomem *mmio) |
| 2715 | { |
Jeff Garzik | c9d3913 | 2005-11-13 17:47:51 -0500 | [diff] [blame] | 2716 | void __iomem *phy_mmio = mv5_phy_base(mmio, idx); |
| 2717 | u32 tmp; |
| 2718 | |
| 2719 | tmp = readl(phy_mmio + MV5_PHY_MODE); |
| 2720 | |
| 2721 | hpriv->signal[idx].pre = tmp & 0x1800; /* bits 12:11 */ |
| 2722 | hpriv->signal[idx].amps = tmp & 0xe0; /* bits 7:5 */ |
Jeff Garzik | ba3fe8f | 2005-11-12 19:08:48 -0500 | [diff] [blame] | 2723 | } |
| 2724 | |
Jeff Garzik | 47c2b67 | 2005-11-12 21:13:17 -0500 | [diff] [blame] | 2725 | 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] | 2726 | { |
Jeff Garzik | 522479f | 2005-11-12 22:14:02 -0500 | [diff] [blame] | 2727 | u32 tmp; |
| 2728 | |
Mark Lord | 8e7decd | 2008-05-02 02:07:51 -0400 | [diff] [blame] | 2729 | writel(0, mmio + MV_GPIO_PORT_CTL_OFS); |
Jeff Garzik | 522479f | 2005-11-12 22:14:02 -0500 | [diff] [blame] | 2730 | |
| 2731 | /* FIXME: handle MV_HP_ERRATA_50XXB2 errata */ |
| 2732 | |
| 2733 | tmp = readl(mmio + MV_PCI_EXP_ROM_BAR_CTL); |
| 2734 | tmp |= ~(1 << 0); |
| 2735 | writel(tmp, mmio + MV_PCI_EXP_ROM_BAR_CTL); |
Jeff Garzik | ba3fe8f | 2005-11-12 19:08:48 -0500 | [diff] [blame] | 2736 | } |
| 2737 | |
Jeff Garzik | 2a47ce0 | 2005-11-12 23:05:14 -0500 | [diff] [blame] | 2738 | static void mv5_phy_errata(struct mv_host_priv *hpriv, void __iomem *mmio, |
| 2739 | unsigned int port) |
Jeff Garzik | bca1c4e | 2005-11-12 12:48:15 -0500 | [diff] [blame] | 2740 | { |
Jeff Garzik | c9d3913 | 2005-11-13 17:47:51 -0500 | [diff] [blame] | 2741 | void __iomem *phy_mmio = mv5_phy_base(mmio, port); |
| 2742 | const u32 mask = (1<<12) | (1<<11) | (1<<7) | (1<<6) | (1<<5); |
| 2743 | u32 tmp; |
| 2744 | int fix_apm_sq = (hpriv->hp_flags & MV_HP_ERRATA_50XXB0); |
| 2745 | |
| 2746 | if (fix_apm_sq) { |
Mark Lord | 8e7decd | 2008-05-02 02:07:51 -0400 | [diff] [blame] | 2747 | tmp = readl(phy_mmio + MV5_LTMODE_OFS); |
Jeff Garzik | c9d3913 | 2005-11-13 17:47:51 -0500 | [diff] [blame] | 2748 | tmp |= (1 << 19); |
Mark Lord | 8e7decd | 2008-05-02 02:07:51 -0400 | [diff] [blame] | 2749 | writel(tmp, phy_mmio + MV5_LTMODE_OFS); |
Jeff Garzik | c9d3913 | 2005-11-13 17:47:51 -0500 | [diff] [blame] | 2750 | |
Mark Lord | 8e7decd | 2008-05-02 02:07:51 -0400 | [diff] [blame] | 2751 | tmp = readl(phy_mmio + MV5_PHY_CTL_OFS); |
Jeff Garzik | c9d3913 | 2005-11-13 17:47:51 -0500 | [diff] [blame] | 2752 | tmp &= ~0x3; |
| 2753 | tmp |= 0x1; |
Mark Lord | 8e7decd | 2008-05-02 02:07:51 -0400 | [diff] [blame] | 2754 | writel(tmp, phy_mmio + MV5_PHY_CTL_OFS); |
Jeff Garzik | c9d3913 | 2005-11-13 17:47:51 -0500 | [diff] [blame] | 2755 | } |
| 2756 | |
| 2757 | tmp = readl(phy_mmio + MV5_PHY_MODE); |
| 2758 | tmp &= ~mask; |
| 2759 | tmp |= hpriv->signal[port].pre; |
| 2760 | tmp |= hpriv->signal[port].amps; |
| 2761 | writel(tmp, phy_mmio + MV5_PHY_MODE); |
Jeff Garzik | bca1c4e | 2005-11-12 12:48:15 -0500 | [diff] [blame] | 2762 | } |
| 2763 | |
Jeff Garzik | c9d3913 | 2005-11-13 17:47:51 -0500 | [diff] [blame] | 2764 | |
| 2765 | #undef ZERO |
| 2766 | #define ZERO(reg) writel(0, port_mmio + (reg)) |
| 2767 | static void mv5_reset_hc_port(struct mv_host_priv *hpriv, void __iomem *mmio, |
| 2768 | unsigned int port) |
Jeff Garzik | 47c2b67 | 2005-11-12 21:13:17 -0500 | [diff] [blame] | 2769 | { |
Jeff Garzik | c9d3913 | 2005-11-13 17:47:51 -0500 | [diff] [blame] | 2770 | void __iomem *port_mmio = mv_port_base(mmio, port); |
| 2771 | |
Mark Lord | e12bef5 | 2008-03-31 19:33:56 -0400 | [diff] [blame] | 2772 | mv_reset_channel(hpriv, mmio, port); |
Jeff Garzik | c9d3913 | 2005-11-13 17:47:51 -0500 | [diff] [blame] | 2773 | |
| 2774 | ZERO(0x028); /* command */ |
| 2775 | writel(0x11f, port_mmio + EDMA_CFG_OFS); |
| 2776 | ZERO(0x004); /* timer */ |
| 2777 | ZERO(0x008); /* irq err cause */ |
| 2778 | ZERO(0x00c); /* irq err mask */ |
| 2779 | ZERO(0x010); /* rq bah */ |
| 2780 | ZERO(0x014); /* rq inp */ |
| 2781 | ZERO(0x018); /* rq outp */ |
| 2782 | ZERO(0x01c); /* respq bah */ |
| 2783 | ZERO(0x024); /* respq outp */ |
| 2784 | ZERO(0x020); /* respq inp */ |
| 2785 | ZERO(0x02c); /* test control */ |
Mark Lord | 8e7decd | 2008-05-02 02:07:51 -0400 | [diff] [blame] | 2786 | writel(0xbc, port_mmio + EDMA_IORDY_TMOUT_OFS); |
Jeff Garzik | c9d3913 | 2005-11-13 17:47:51 -0500 | [diff] [blame] | 2787 | } |
| 2788 | #undef ZERO |
| 2789 | |
| 2790 | #define ZERO(reg) writel(0, hc_mmio + (reg)) |
| 2791 | static void mv5_reset_one_hc(struct mv_host_priv *hpriv, void __iomem *mmio, |
| 2792 | unsigned int hc) |
| 2793 | { |
| 2794 | void __iomem *hc_mmio = mv_hc_base(mmio, hc); |
| 2795 | u32 tmp; |
| 2796 | |
| 2797 | ZERO(0x00c); |
| 2798 | ZERO(0x010); |
| 2799 | ZERO(0x014); |
| 2800 | ZERO(0x018); |
| 2801 | |
| 2802 | tmp = readl(hc_mmio + 0x20); |
| 2803 | tmp &= 0x1c1c1c1c; |
| 2804 | tmp |= 0x03030303; |
| 2805 | writel(tmp, hc_mmio + 0x20); |
| 2806 | } |
| 2807 | #undef ZERO |
| 2808 | |
| 2809 | static int mv5_reset_hc(struct mv_host_priv *hpriv, void __iomem *mmio, |
| 2810 | unsigned int n_hc) |
| 2811 | { |
| 2812 | unsigned int hc, port; |
| 2813 | |
| 2814 | for (hc = 0; hc < n_hc; hc++) { |
| 2815 | for (port = 0; port < MV_PORTS_PER_HC; port++) |
| 2816 | mv5_reset_hc_port(hpriv, mmio, |
| 2817 | (hc * MV_PORTS_PER_HC) + port); |
| 2818 | |
| 2819 | mv5_reset_one_hc(hpriv, mmio, hc); |
| 2820 | } |
| 2821 | |
| 2822 | return 0; |
Jeff Garzik | 47c2b67 | 2005-11-12 21:13:17 -0500 | [diff] [blame] | 2823 | } |
| 2824 | |
Jeff Garzik | 101ffae | 2005-11-12 22:17:49 -0500 | [diff] [blame] | 2825 | #undef ZERO |
| 2826 | #define ZERO(reg) writel(0, mmio + (reg)) |
Saeed Bishara | 7bb3c52 | 2008-01-30 11:50:45 -1100 | [diff] [blame] | 2827 | 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] | 2828 | { |
Mark Lord | 02a121d | 2007-12-01 13:07:22 -0500 | [diff] [blame] | 2829 | struct mv_host_priv *hpriv = host->private_data; |
Jeff Garzik | 101ffae | 2005-11-12 22:17:49 -0500 | [diff] [blame] | 2830 | u32 tmp; |
| 2831 | |
Mark Lord | 8e7decd | 2008-05-02 02:07:51 -0400 | [diff] [blame] | 2832 | tmp = readl(mmio + MV_PCI_MODE_OFS); |
Jeff Garzik | 101ffae | 2005-11-12 22:17:49 -0500 | [diff] [blame] | 2833 | tmp &= 0xff00ffff; |
Mark Lord | 8e7decd | 2008-05-02 02:07:51 -0400 | [diff] [blame] | 2834 | writel(tmp, mmio + MV_PCI_MODE_OFS); |
Jeff Garzik | 101ffae | 2005-11-12 22:17:49 -0500 | [diff] [blame] | 2835 | |
| 2836 | ZERO(MV_PCI_DISC_TIMER); |
| 2837 | ZERO(MV_PCI_MSI_TRIGGER); |
Mark Lord | 8e7decd | 2008-05-02 02:07:51 -0400 | [diff] [blame] | 2838 | writel(0x000100ff, mmio + MV_PCI_XBAR_TMOUT_OFS); |
Jeff Garzik | 101ffae | 2005-11-12 22:17:49 -0500 | [diff] [blame] | 2839 | ZERO(MV_PCI_SERR_MASK); |
Mark Lord | 02a121d | 2007-12-01 13:07:22 -0500 | [diff] [blame] | 2840 | ZERO(hpriv->irq_cause_ofs); |
| 2841 | ZERO(hpriv->irq_mask_ofs); |
Jeff Garzik | 101ffae | 2005-11-12 22:17:49 -0500 | [diff] [blame] | 2842 | ZERO(MV_PCI_ERR_LOW_ADDRESS); |
| 2843 | ZERO(MV_PCI_ERR_HIGH_ADDRESS); |
| 2844 | ZERO(MV_PCI_ERR_ATTRIBUTE); |
| 2845 | ZERO(MV_PCI_ERR_COMMAND); |
| 2846 | } |
| 2847 | #undef ZERO |
| 2848 | |
| 2849 | static void mv6_reset_flash(struct mv_host_priv *hpriv, void __iomem *mmio) |
| 2850 | { |
| 2851 | u32 tmp; |
| 2852 | |
| 2853 | mv5_reset_flash(hpriv, mmio); |
| 2854 | |
Mark Lord | 8e7decd | 2008-05-02 02:07:51 -0400 | [diff] [blame] | 2855 | tmp = readl(mmio + MV_GPIO_PORT_CTL_OFS); |
Jeff Garzik | 101ffae | 2005-11-12 22:17:49 -0500 | [diff] [blame] | 2856 | tmp &= 0x3; |
| 2857 | tmp |= (1 << 5) | (1 << 6); |
Mark Lord | 8e7decd | 2008-05-02 02:07:51 -0400 | [diff] [blame] | 2858 | writel(tmp, mmio + MV_GPIO_PORT_CTL_OFS); |
Jeff Garzik | 101ffae | 2005-11-12 22:17:49 -0500 | [diff] [blame] | 2859 | } |
| 2860 | |
| 2861 | /** |
| 2862 | * mv6_reset_hc - Perform the 6xxx global soft reset |
| 2863 | * @mmio: base address of the HBA |
| 2864 | * |
| 2865 | * This routine only applies to 6xxx parts. |
| 2866 | * |
| 2867 | * LOCKING: |
| 2868 | * Inherited from caller. |
| 2869 | */ |
Jeff Garzik | c9d3913 | 2005-11-13 17:47:51 -0500 | [diff] [blame] | 2870 | static int mv6_reset_hc(struct mv_host_priv *hpriv, void __iomem *mmio, |
| 2871 | unsigned int n_hc) |
Jeff Garzik | 101ffae | 2005-11-12 22:17:49 -0500 | [diff] [blame] | 2872 | { |
| 2873 | void __iomem *reg = mmio + PCI_MAIN_CMD_STS_OFS; |
| 2874 | int i, rc = 0; |
| 2875 | u32 t; |
| 2876 | |
| 2877 | /* Following procedure defined in PCI "main command and status |
| 2878 | * register" table. |
| 2879 | */ |
| 2880 | t = readl(reg); |
| 2881 | writel(t | STOP_PCI_MASTER, reg); |
| 2882 | |
| 2883 | for (i = 0; i < 1000; i++) { |
| 2884 | udelay(1); |
| 2885 | t = readl(reg); |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 2886 | if (PCI_MASTER_EMPTY & t) |
Jeff Garzik | 101ffae | 2005-11-12 22:17:49 -0500 | [diff] [blame] | 2887 | break; |
Jeff Garzik | 101ffae | 2005-11-12 22:17:49 -0500 | [diff] [blame] | 2888 | } |
| 2889 | if (!(PCI_MASTER_EMPTY & t)) { |
| 2890 | printk(KERN_ERR DRV_NAME ": PCI master won't flush\n"); |
| 2891 | rc = 1; |
| 2892 | goto done; |
| 2893 | } |
| 2894 | |
| 2895 | /* set reset */ |
| 2896 | i = 5; |
| 2897 | do { |
| 2898 | writel(t | GLOB_SFT_RST, reg); |
| 2899 | t = readl(reg); |
| 2900 | udelay(1); |
| 2901 | } while (!(GLOB_SFT_RST & t) && (i-- > 0)); |
| 2902 | |
| 2903 | if (!(GLOB_SFT_RST & t)) { |
| 2904 | printk(KERN_ERR DRV_NAME ": can't set global reset\n"); |
| 2905 | rc = 1; |
| 2906 | goto done; |
| 2907 | } |
| 2908 | |
| 2909 | /* clear reset and *reenable the PCI master* (not mentioned in spec) */ |
| 2910 | i = 5; |
| 2911 | do { |
| 2912 | writel(t & ~(GLOB_SFT_RST | STOP_PCI_MASTER), reg); |
| 2913 | t = readl(reg); |
| 2914 | udelay(1); |
| 2915 | } while ((GLOB_SFT_RST & t) && (i-- > 0)); |
| 2916 | |
| 2917 | if (GLOB_SFT_RST & t) { |
| 2918 | printk(KERN_ERR DRV_NAME ": can't clear global reset\n"); |
| 2919 | rc = 1; |
| 2920 | } |
| 2921 | done: |
| 2922 | return rc; |
| 2923 | } |
| 2924 | |
Jeff Garzik | 47c2b67 | 2005-11-12 21:13:17 -0500 | [diff] [blame] | 2925 | static void mv6_read_preamp(struct mv_host_priv *hpriv, int idx, |
Jeff Garzik | ba3fe8f | 2005-11-12 19:08:48 -0500 | [diff] [blame] | 2926 | void __iomem *mmio) |
| 2927 | { |
| 2928 | void __iomem *port_mmio; |
| 2929 | u32 tmp; |
| 2930 | |
Mark Lord | 8e7decd | 2008-05-02 02:07:51 -0400 | [diff] [blame] | 2931 | tmp = readl(mmio + MV_RESET_CFG_OFS); |
Jeff Garzik | ba3fe8f | 2005-11-12 19:08:48 -0500 | [diff] [blame] | 2932 | if ((tmp & (1 << 0)) == 0) { |
Jeff Garzik | 47c2b67 | 2005-11-12 21:13:17 -0500 | [diff] [blame] | 2933 | hpriv->signal[idx].amps = 0x7 << 8; |
Jeff Garzik | ba3fe8f | 2005-11-12 19:08:48 -0500 | [diff] [blame] | 2934 | hpriv->signal[idx].pre = 0x1 << 5; |
| 2935 | return; |
| 2936 | } |
| 2937 | |
| 2938 | port_mmio = mv_port_base(mmio, idx); |
| 2939 | tmp = readl(port_mmio + PHY_MODE2); |
| 2940 | |
| 2941 | hpriv->signal[idx].amps = tmp & 0x700; /* bits 10:8 */ |
| 2942 | hpriv->signal[idx].pre = tmp & 0xe0; /* bits 7:5 */ |
| 2943 | } |
| 2944 | |
Jeff Garzik | 47c2b67 | 2005-11-12 21:13:17 -0500 | [diff] [blame] | 2945 | 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] | 2946 | { |
Mark Lord | 8e7decd | 2008-05-02 02:07:51 -0400 | [diff] [blame] | 2947 | writel(0x00000060, mmio + MV_GPIO_PORT_CTL_OFS); |
Jeff Garzik | ba3fe8f | 2005-11-12 19:08:48 -0500 | [diff] [blame] | 2948 | } |
| 2949 | |
Jeff Garzik | c9d3913 | 2005-11-13 17:47:51 -0500 | [diff] [blame] | 2950 | 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] | 2951 | unsigned int port) |
Jeff Garzik | bca1c4e | 2005-11-12 12:48:15 -0500 | [diff] [blame] | 2952 | { |
Jeff Garzik | c9d3913 | 2005-11-13 17:47:51 -0500 | [diff] [blame] | 2953 | void __iomem *port_mmio = mv_port_base(mmio, port); |
| 2954 | |
Jeff Garzik | bca1c4e | 2005-11-12 12:48:15 -0500 | [diff] [blame] | 2955 | u32 hp_flags = hpriv->hp_flags; |
Jeff Garzik | 47c2b67 | 2005-11-12 21:13:17 -0500 | [diff] [blame] | 2956 | int fix_phy_mode2 = |
| 2957 | hp_flags & (MV_HP_ERRATA_60X1B2 | MV_HP_ERRATA_60X1C0); |
Jeff Garzik | bca1c4e | 2005-11-12 12:48:15 -0500 | [diff] [blame] | 2958 | int fix_phy_mode4 = |
Jeff Garzik | 47c2b67 | 2005-11-12 21:13:17 -0500 | [diff] [blame] | 2959 | hp_flags & (MV_HP_ERRATA_60X1B2 | MV_HP_ERRATA_60X1C0); |
Mark Lord | 8c30a8b | 2008-05-27 17:56:31 -0400 | [diff] [blame] | 2960 | u32 m2, m3; |
Jeff Garzik | 47c2b67 | 2005-11-12 21:13:17 -0500 | [diff] [blame] | 2961 | |
| 2962 | if (fix_phy_mode2) { |
| 2963 | m2 = readl(port_mmio + PHY_MODE2); |
| 2964 | m2 &= ~(1 << 16); |
| 2965 | m2 |= (1 << 31); |
| 2966 | writel(m2, port_mmio + PHY_MODE2); |
| 2967 | |
| 2968 | udelay(200); |
| 2969 | |
| 2970 | m2 = readl(port_mmio + PHY_MODE2); |
| 2971 | m2 &= ~((1 << 16) | (1 << 31)); |
| 2972 | writel(m2, port_mmio + PHY_MODE2); |
| 2973 | |
| 2974 | udelay(200); |
| 2975 | } |
| 2976 | |
Mark Lord | 8c30a8b | 2008-05-27 17:56:31 -0400 | [diff] [blame] | 2977 | /* |
| 2978 | * Gen-II/IIe PHY_MODE3 errata RM#2: |
| 2979 | * Achieves better receiver noise performance than the h/w default: |
| 2980 | */ |
| 2981 | m3 = readl(port_mmio + PHY_MODE3); |
| 2982 | m3 = (m3 & 0x1f) | (0x5555601 << 5); |
Jeff Garzik | bca1c4e | 2005-11-12 12:48:15 -0500 | [diff] [blame] | 2983 | |
Mark Lord | 0388a8c | 2008-05-28 13:41:52 -0400 | [diff] [blame] | 2984 | /* Guideline 88F5182 (GL# SATA-S11) */ |
| 2985 | if (IS_SOC(hpriv)) |
| 2986 | m3 &= ~0x1c; |
| 2987 | |
Jeff Garzik | bca1c4e | 2005-11-12 12:48:15 -0500 | [diff] [blame] | 2988 | if (fix_phy_mode4) { |
Mark Lord | ba069e3 | 2008-05-31 16:46:34 -0400 | [diff] [blame] | 2989 | u32 m4 = readl(port_mmio + PHY_MODE4); |
| 2990 | /* |
| 2991 | * Enforce reserved-bit restrictions on GenIIe devices only. |
| 2992 | * For earlier chipsets, force only the internal config field |
| 2993 | * (workaround for errata FEr SATA#10 part 1). |
| 2994 | */ |
Mark Lord | 8c30a8b | 2008-05-27 17:56:31 -0400 | [diff] [blame] | 2995 | if (IS_GEN_IIE(hpriv)) |
Mark Lord | ba069e3 | 2008-05-31 16:46:34 -0400 | [diff] [blame] | 2996 | m4 = (m4 & ~PHY_MODE4_RSVD_ZEROS) | PHY_MODE4_RSVD_ONES; |
| 2997 | else |
| 2998 | m4 = (m4 & ~PHY_MODE4_CFG_MASK) | PHY_MODE4_CFG_VALUE; |
Mark Lord | 8c30a8b | 2008-05-27 17:56:31 -0400 | [diff] [blame] | 2999 | writel(m4, port_mmio + PHY_MODE4); |
Jeff Garzik | bca1c4e | 2005-11-12 12:48:15 -0500 | [diff] [blame] | 3000 | } |
Mark Lord | b406c7a | 2008-05-28 12:01:12 -0400 | [diff] [blame] | 3001 | /* |
| 3002 | * Workaround for 60x1-B2 errata SATA#13: |
| 3003 | * Any write to PHY_MODE4 (above) may corrupt PHY_MODE3, |
| 3004 | * so we must always rewrite PHY_MODE3 after PHY_MODE4. |
| 3005 | */ |
| 3006 | writel(m3, port_mmio + PHY_MODE3); |
Jeff Garzik | bca1c4e | 2005-11-12 12:48:15 -0500 | [diff] [blame] | 3007 | |
| 3008 | /* Revert values of pre-emphasis and signal amps to the saved ones */ |
| 3009 | m2 = readl(port_mmio + PHY_MODE2); |
| 3010 | |
| 3011 | m2 &= ~MV_M2_PREAMP_MASK; |
Jeff Garzik | 2a47ce0 | 2005-11-12 23:05:14 -0500 | [diff] [blame] | 3012 | m2 |= hpriv->signal[port].amps; |
| 3013 | m2 |= hpriv->signal[port].pre; |
Jeff Garzik | 47c2b67 | 2005-11-12 21:13:17 -0500 | [diff] [blame] | 3014 | m2 &= ~(1 << 16); |
Jeff Garzik | bca1c4e | 2005-11-12 12:48:15 -0500 | [diff] [blame] | 3015 | |
Jeff Garzik | e4e7b89 | 2006-01-31 12:18:41 -0500 | [diff] [blame] | 3016 | /* according to mvSata 3.6.1, some IIE values are fixed */ |
| 3017 | if (IS_GEN_IIE(hpriv)) { |
| 3018 | m2 &= ~0xC30FF01F; |
| 3019 | m2 |= 0x0000900F; |
| 3020 | } |
| 3021 | |
Jeff Garzik | bca1c4e | 2005-11-12 12:48:15 -0500 | [diff] [blame] | 3022 | writel(m2, port_mmio + PHY_MODE2); |
| 3023 | } |
| 3024 | |
Saeed Bishara | f351b2d | 2008-02-01 18:08:03 -0500 | [diff] [blame] | 3025 | /* TODO: use the generic LED interface to configure the SATA Presence */ |
| 3026 | /* & Acitivy LEDs on the board */ |
| 3027 | static void mv_soc_enable_leds(struct mv_host_priv *hpriv, |
| 3028 | void __iomem *mmio) |
| 3029 | { |
| 3030 | return; |
| 3031 | } |
| 3032 | |
| 3033 | static void mv_soc_read_preamp(struct mv_host_priv *hpriv, int idx, |
| 3034 | void __iomem *mmio) |
| 3035 | { |
| 3036 | void __iomem *port_mmio; |
| 3037 | u32 tmp; |
| 3038 | |
| 3039 | port_mmio = mv_port_base(mmio, idx); |
| 3040 | tmp = readl(port_mmio + PHY_MODE2); |
| 3041 | |
| 3042 | hpriv->signal[idx].amps = tmp & 0x700; /* bits 10:8 */ |
| 3043 | hpriv->signal[idx].pre = tmp & 0xe0; /* bits 7:5 */ |
| 3044 | } |
| 3045 | |
| 3046 | #undef ZERO |
| 3047 | #define ZERO(reg) writel(0, port_mmio + (reg)) |
| 3048 | static void mv_soc_reset_hc_port(struct mv_host_priv *hpriv, |
| 3049 | void __iomem *mmio, unsigned int port) |
| 3050 | { |
| 3051 | void __iomem *port_mmio = mv_port_base(mmio, port); |
| 3052 | |
Mark Lord | e12bef5 | 2008-03-31 19:33:56 -0400 | [diff] [blame] | 3053 | mv_reset_channel(hpriv, mmio, port); |
Saeed Bishara | f351b2d | 2008-02-01 18:08:03 -0500 | [diff] [blame] | 3054 | |
| 3055 | ZERO(0x028); /* command */ |
| 3056 | writel(0x101f, port_mmio + EDMA_CFG_OFS); |
| 3057 | ZERO(0x004); /* timer */ |
| 3058 | ZERO(0x008); /* irq err cause */ |
| 3059 | ZERO(0x00c); /* irq err mask */ |
| 3060 | ZERO(0x010); /* rq bah */ |
| 3061 | ZERO(0x014); /* rq inp */ |
| 3062 | ZERO(0x018); /* rq outp */ |
| 3063 | ZERO(0x01c); /* respq bah */ |
| 3064 | ZERO(0x024); /* respq outp */ |
| 3065 | ZERO(0x020); /* respq inp */ |
| 3066 | ZERO(0x02c); /* test control */ |
Mark Lord | 8e7decd | 2008-05-02 02:07:51 -0400 | [diff] [blame] | 3067 | writel(0xbc, port_mmio + EDMA_IORDY_TMOUT_OFS); |
Saeed Bishara | f351b2d | 2008-02-01 18:08:03 -0500 | [diff] [blame] | 3068 | } |
| 3069 | |
| 3070 | #undef ZERO |
| 3071 | |
| 3072 | #define ZERO(reg) writel(0, hc_mmio + (reg)) |
| 3073 | static void mv_soc_reset_one_hc(struct mv_host_priv *hpriv, |
| 3074 | void __iomem *mmio) |
| 3075 | { |
| 3076 | void __iomem *hc_mmio = mv_hc_base(mmio, 0); |
| 3077 | |
| 3078 | ZERO(0x00c); |
| 3079 | ZERO(0x010); |
| 3080 | ZERO(0x014); |
| 3081 | |
| 3082 | } |
| 3083 | |
| 3084 | #undef ZERO |
| 3085 | |
| 3086 | static int mv_soc_reset_hc(struct mv_host_priv *hpriv, |
| 3087 | void __iomem *mmio, unsigned int n_hc) |
| 3088 | { |
| 3089 | unsigned int port; |
| 3090 | |
| 3091 | for (port = 0; port < hpriv->n_ports; port++) |
| 3092 | mv_soc_reset_hc_port(hpriv, mmio, port); |
| 3093 | |
| 3094 | mv_soc_reset_one_hc(hpriv, mmio); |
| 3095 | |
| 3096 | return 0; |
| 3097 | } |
| 3098 | |
| 3099 | static void mv_soc_reset_flash(struct mv_host_priv *hpriv, |
| 3100 | void __iomem *mmio) |
| 3101 | { |
| 3102 | return; |
| 3103 | } |
| 3104 | |
| 3105 | static void mv_soc_reset_bus(struct ata_host *host, void __iomem *mmio) |
| 3106 | { |
| 3107 | return; |
| 3108 | } |
| 3109 | |
Mark Lord | 8e7decd | 2008-05-02 02:07:51 -0400 | [diff] [blame] | 3110 | static void mv_setup_ifcfg(void __iomem *port_mmio, int want_gen2i) |
Mark Lord | b67a106 | 2008-03-31 19:35:13 -0400 | [diff] [blame] | 3111 | { |
Mark Lord | 8e7decd | 2008-05-02 02:07:51 -0400 | [diff] [blame] | 3112 | u32 ifcfg = readl(port_mmio + SATA_INTERFACE_CFG_OFS); |
Mark Lord | b67a106 | 2008-03-31 19:35:13 -0400 | [diff] [blame] | 3113 | |
Mark Lord | 8e7decd | 2008-05-02 02:07:51 -0400 | [diff] [blame] | 3114 | ifcfg = (ifcfg & 0xf7f) | 0x9b1000; /* from chip spec */ |
Mark Lord | b67a106 | 2008-03-31 19:35:13 -0400 | [diff] [blame] | 3115 | if (want_gen2i) |
Mark Lord | 8e7decd | 2008-05-02 02:07:51 -0400 | [diff] [blame] | 3116 | ifcfg |= (1 << 7); /* enable gen2i speed */ |
| 3117 | writelfl(ifcfg, port_mmio + SATA_INTERFACE_CFG_OFS); |
Mark Lord | b67a106 | 2008-03-31 19:35:13 -0400 | [diff] [blame] | 3118 | } |
| 3119 | |
Mark Lord | e12bef5 | 2008-03-31 19:33:56 -0400 | [diff] [blame] | 3120 | 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] | 3121 | unsigned int port_no) |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 3122 | { |
Jeff Garzik | c9d3913 | 2005-11-13 17:47:51 -0500 | [diff] [blame] | 3123 | void __iomem *port_mmio = mv_port_base(mmio, port_no); |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 3124 | |
Mark Lord | 8e7decd | 2008-05-02 02:07:51 -0400 | [diff] [blame] | 3125 | /* |
| 3126 | * The datasheet warns against setting EDMA_RESET when EDMA is active |
| 3127 | * (but doesn't say what the problem might be). So we first try |
| 3128 | * to disable the EDMA engine before doing the EDMA_RESET operation. |
| 3129 | */ |
Mark Lord | 0d8be5c | 2008-04-16 14:56:12 -0400 | [diff] [blame] | 3130 | mv_stop_edma_engine(port_mmio); |
Mark Lord | 8e7decd | 2008-05-02 02:07:51 -0400 | [diff] [blame] | 3131 | writelfl(EDMA_RESET, port_mmio + EDMA_CMD_OFS); |
Jeff Garzik | bca1c4e | 2005-11-12 12:48:15 -0500 | [diff] [blame] | 3132 | |
Mark Lord | b67a106 | 2008-03-31 19:35:13 -0400 | [diff] [blame] | 3133 | if (!IS_GEN_I(hpriv)) { |
Mark Lord | 8e7decd | 2008-05-02 02:07:51 -0400 | [diff] [blame] | 3134 | /* Enable 3.0gb/s link speed: this survives EDMA_RESET */ |
| 3135 | mv_setup_ifcfg(port_mmio, 1); |
Jeff Garzik | bca1c4e | 2005-11-12 12:48:15 -0500 | [diff] [blame] | 3136 | } |
Mark Lord | b67a106 | 2008-03-31 19:35:13 -0400 | [diff] [blame] | 3137 | /* |
Mark Lord | 8e7decd | 2008-05-02 02:07:51 -0400 | [diff] [blame] | 3138 | * Strobing EDMA_RESET here causes a hard reset of the SATA transport, |
Mark Lord | b67a106 | 2008-03-31 19:35:13 -0400 | [diff] [blame] | 3139 | * link, and physical layers. It resets all SATA interface registers |
| 3140 | * (except for SATA_INTERFACE_CFG), and issues a COMRESET to the dev. |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 3141 | */ |
Mark Lord | 8e7decd | 2008-05-02 02:07:51 -0400 | [diff] [blame] | 3142 | writelfl(EDMA_RESET, port_mmio + EDMA_CMD_OFS); |
Mark Lord | b67a106 | 2008-03-31 19:35:13 -0400 | [diff] [blame] | 3143 | udelay(25); /* allow reset propagation */ |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 3144 | writelfl(0, port_mmio + EDMA_CMD_OFS); |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 3145 | |
Jeff Garzik | c9d3913 | 2005-11-13 17:47:51 -0500 | [diff] [blame] | 3146 | hpriv->ops->phy_errata(hpriv, mmio, port_no); |
| 3147 | |
Jeff Garzik | ee9ccdf | 2007-07-12 15:51:22 -0400 | [diff] [blame] | 3148 | if (IS_GEN_I(hpriv)) |
Jeff Garzik | c9d3913 | 2005-11-13 17:47:51 -0500 | [diff] [blame] | 3149 | mdelay(1); |
| 3150 | } |
| 3151 | |
Mark Lord | e49856d | 2008-04-16 14:59:07 -0400 | [diff] [blame] | 3152 | static void mv_pmp_select(struct ata_port *ap, int pmp) |
Jeff Garzik | c9d3913 | 2005-11-13 17:47:51 -0500 | [diff] [blame] | 3153 | { |
Mark Lord | e49856d | 2008-04-16 14:59:07 -0400 | [diff] [blame] | 3154 | if (sata_pmp_supported(ap)) { |
| 3155 | void __iomem *port_mmio = mv_ap_base(ap); |
| 3156 | u32 reg = readl(port_mmio + SATA_IFCTL_OFS); |
| 3157 | int old = reg & 0xf; |
Jeff Garzik | c9d3913 | 2005-11-13 17:47:51 -0500 | [diff] [blame] | 3158 | |
Mark Lord | e49856d | 2008-04-16 14:59:07 -0400 | [diff] [blame] | 3159 | if (old != pmp) { |
| 3160 | reg = (reg & ~0xf) | pmp; |
| 3161 | writelfl(reg, port_mmio + SATA_IFCTL_OFS); |
| 3162 | } |
Tejun Heo | da3dbb1 | 2007-07-16 14:29:40 +0900 | [diff] [blame] | 3163 | } |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 3164 | } |
| 3165 | |
Mark Lord | e49856d | 2008-04-16 14:59:07 -0400 | [diff] [blame] | 3166 | static int mv_pmp_hardreset(struct ata_link *link, unsigned int *class, |
| 3167 | unsigned long deadline) |
Jeff Garzik | 2237467 | 2005-11-17 10:59:48 -0500 | [diff] [blame] | 3168 | { |
Mark Lord | e49856d | 2008-04-16 14:59:07 -0400 | [diff] [blame] | 3169 | mv_pmp_select(link->ap, sata_srst_pmp(link)); |
| 3170 | return sata_std_hardreset(link, class, deadline); |
| 3171 | } |
Jeff Garzik | 0ea9e17 | 2007-07-13 17:06:45 -0400 | [diff] [blame] | 3172 | |
Mark Lord | e49856d | 2008-04-16 14:59:07 -0400 | [diff] [blame] | 3173 | static int mv_softreset(struct ata_link *link, unsigned int *class, |
| 3174 | unsigned long deadline) |
| 3175 | { |
| 3176 | mv_pmp_select(link->ap, sata_srst_pmp(link)); |
| 3177 | return ata_sff_softreset(link, class, deadline); |
Jeff Garzik | 2237467 | 2005-11-17 10:59:48 -0500 | [diff] [blame] | 3178 | } |
| 3179 | |
Tejun Heo | cc0680a | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 3180 | static int mv_hardreset(struct ata_link *link, unsigned int *class, |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 3181 | unsigned long deadline) |
| 3182 | { |
Tejun Heo | cc0680a | 2007-08-06 18:36:23 +0900 | [diff] [blame] | 3183 | struct ata_port *ap = link->ap; |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 3184 | struct mv_host_priv *hpriv = ap->host->private_data; |
Mark Lord | b562468 | 2008-03-31 19:34:40 -0400 | [diff] [blame] | 3185 | struct mv_port_priv *pp = ap->private_data; |
Saeed Bishara | f351b2d | 2008-02-01 18:08:03 -0500 | [diff] [blame] | 3186 | void __iomem *mmio = hpriv->base; |
Mark Lord | 0d8be5c | 2008-04-16 14:56:12 -0400 | [diff] [blame] | 3187 | int rc, attempts = 0, extra = 0; |
| 3188 | u32 sstatus; |
| 3189 | bool online; |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 3190 | |
Mark Lord | e12bef5 | 2008-03-31 19:33:56 -0400 | [diff] [blame] | 3191 | mv_reset_channel(hpriv, mmio, ap->port_no); |
Mark Lord | b562468 | 2008-03-31 19:34:40 -0400 | [diff] [blame] | 3192 | pp->pp_flags &= ~MV_PP_FLAG_EDMA_EN; |
Mark Lord | d16ab3f | 2009-02-25 15:17:43 -0500 | [diff] [blame] | 3193 | pp->pp_flags &= |
| 3194 | ~(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] | 3195 | |
Mark Lord | 0d8be5c | 2008-04-16 14:56:12 -0400 | [diff] [blame] | 3196 | /* Workaround for errata FEr SATA#10 (part 2) */ |
| 3197 | do { |
Mark Lord | 17c5aab | 2008-04-16 14:56:51 -0400 | [diff] [blame] | 3198 | const unsigned long *timing = |
| 3199 | sata_ehc_deb_timing(&link->eh_context); |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 3200 | |
Mark Lord | 17c5aab | 2008-04-16 14:56:51 -0400 | [diff] [blame] | 3201 | rc = sata_link_hardreset(link, timing, deadline + extra, |
| 3202 | &online, NULL); |
Mark Lord | 9dcffd9 | 2008-05-14 09:18:12 -0400 | [diff] [blame] | 3203 | rc = online ? -EAGAIN : rc; |
Mark Lord | 17c5aab | 2008-04-16 14:56:51 -0400 | [diff] [blame] | 3204 | if (rc) |
Mark Lord | 0d8be5c | 2008-04-16 14:56:12 -0400 | [diff] [blame] | 3205 | return rc; |
Mark Lord | 0d8be5c | 2008-04-16 14:56:12 -0400 | [diff] [blame] | 3206 | sata_scr_read(link, SCR_STATUS, &sstatus); |
| 3207 | if (!IS_GEN_I(hpriv) && ++attempts >= 5 && sstatus == 0x121) { |
| 3208 | /* Force 1.5gb/s link speed and try again */ |
Mark Lord | 8e7decd | 2008-05-02 02:07:51 -0400 | [diff] [blame] | 3209 | mv_setup_ifcfg(mv_ap_base(ap), 0); |
Mark Lord | 0d8be5c | 2008-04-16 14:56:12 -0400 | [diff] [blame] | 3210 | if (time_after(jiffies + HZ, deadline)) |
| 3211 | extra = HZ; /* only extend it once, max */ |
| 3212 | } |
| 3213 | } while (sstatus != 0x0 && sstatus != 0x113 && sstatus != 0x123); |
Mark Lord | 08da175 | 2009-02-25 15:13:03 -0500 | [diff] [blame] | 3214 | mv_save_cached_regs(ap); |
Mark Lord | 66e57a2 | 2009-01-30 18:52:58 -0500 | [diff] [blame] | 3215 | mv_edma_cfg(ap, 0, 0); |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 3216 | |
Mark Lord | 17c5aab | 2008-04-16 14:56:51 -0400 | [diff] [blame] | 3217 | return rc; |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 3218 | } |
| 3219 | |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 3220 | static void mv_eh_freeze(struct ata_port *ap) |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 3221 | { |
Mark Lord | 1cfd19a | 2008-04-19 15:05:50 -0400 | [diff] [blame] | 3222 | mv_stop_edma(ap); |
Mark Lord | c4de573 | 2008-05-17 13:35:21 -0400 | [diff] [blame] | 3223 | mv_enable_port_irqs(ap, 0); |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 3224 | } |
| 3225 | |
| 3226 | static void mv_eh_thaw(struct ata_port *ap) |
| 3227 | { |
Saeed Bishara | f351b2d | 2008-02-01 18:08:03 -0500 | [diff] [blame] | 3228 | struct mv_host_priv *hpriv = ap->host->private_data; |
Mark Lord | c4de573 | 2008-05-17 13:35:21 -0400 | [diff] [blame] | 3229 | unsigned int port = ap->port_no; |
| 3230 | unsigned int hardport = mv_hardport_from_port(port); |
Mark Lord | 1cfd19a | 2008-04-19 15:05:50 -0400 | [diff] [blame] | 3231 | void __iomem *hc_mmio = mv_hc_base_from_port(hpriv->base, port); |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 3232 | void __iomem *port_mmio = mv_ap_base(ap); |
Mark Lord | c4de573 | 2008-05-17 13:35:21 -0400 | [diff] [blame] | 3233 | u32 hc_irq_cause; |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 3234 | |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 3235 | /* clear EDMA errors on this port */ |
| 3236 | writel(0, port_mmio + EDMA_ERR_IRQ_CAUSE_OFS); |
| 3237 | |
| 3238 | /* clear pending irq events */ |
Mark Lord | cae6edc | 2009-01-19 18:05:42 -0500 | [diff] [blame] | 3239 | hc_irq_cause = ~((DEV_IRQ | DMA_IRQ) << hardport); |
Mark Lord | 1cfd19a | 2008-04-19 15:05:50 -0400 | [diff] [blame] | 3240 | writelfl(hc_irq_cause, hc_mmio + HC_IRQ_CAUSE_OFS); |
Jeff Garzik | bdd4ddd | 2007-07-12 14:34:26 -0400 | [diff] [blame] | 3241 | |
Mark Lord | 88e675e | 2008-05-17 13:36:30 -0400 | [diff] [blame] | 3242 | mv_enable_port_irqs(ap, ERR_IRQ); |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 3243 | } |
| 3244 | |
Brett Russ | 05b308e | 2005-10-05 17:08:53 -0400 | [diff] [blame] | 3245 | /** |
| 3246 | * mv_port_init - Perform some early initialization on a single port. |
| 3247 | * @port: libata data structure storing shadow register addresses |
| 3248 | * @port_mmio: base address of the port |
| 3249 | * |
| 3250 | * Initialize shadow register mmio addresses, clear outstanding |
| 3251 | * interrupts on the port, and unmask interrupts for the future |
| 3252 | * start of the port. |
| 3253 | * |
| 3254 | * LOCKING: |
| 3255 | * Inherited from caller. |
| 3256 | */ |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 3257 | static void mv_port_init(struct ata_ioports *port, void __iomem *port_mmio) |
| 3258 | { |
Tejun Heo | 0d5ff56 | 2007-02-01 15:06:36 +0900 | [diff] [blame] | 3259 | void __iomem *shd_base = port_mmio + SHD_BLK_OFS; |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 3260 | unsigned serr_ofs; |
| 3261 | |
Jeff Garzik | 8b26024 | 2005-11-12 12:32:50 -0500 | [diff] [blame] | 3262 | /* PIO related setup |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 3263 | */ |
| 3264 | port->data_addr = shd_base + (sizeof(u32) * ATA_REG_DATA); |
Jeff Garzik | 8b26024 | 2005-11-12 12:32:50 -0500 | [diff] [blame] | 3265 | port->error_addr = |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 3266 | port->feature_addr = shd_base + (sizeof(u32) * ATA_REG_ERR); |
| 3267 | port->nsect_addr = shd_base + (sizeof(u32) * ATA_REG_NSECT); |
| 3268 | port->lbal_addr = shd_base + (sizeof(u32) * ATA_REG_LBAL); |
| 3269 | port->lbam_addr = shd_base + (sizeof(u32) * ATA_REG_LBAM); |
| 3270 | port->lbah_addr = shd_base + (sizeof(u32) * ATA_REG_LBAH); |
| 3271 | port->device_addr = shd_base + (sizeof(u32) * ATA_REG_DEVICE); |
Jeff Garzik | 8b26024 | 2005-11-12 12:32:50 -0500 | [diff] [blame] | 3272 | port->status_addr = |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 3273 | port->command_addr = shd_base + (sizeof(u32) * ATA_REG_STATUS); |
| 3274 | /* special case: control/altstatus doesn't have ATA_REG_ address */ |
| 3275 | port->altstatus_addr = port->ctl_addr = shd_base + SHD_CTL_AST_OFS; |
| 3276 | |
| 3277 | /* unused: */ |
Randy Dunlap | 8d9db2d | 2007-02-16 01:40:06 -0800 | [diff] [blame] | 3278 | port->cmd_addr = port->bmdma_addr = port->scr_addr = NULL; |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 3279 | |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 3280 | /* Clear any currently outstanding port interrupt conditions */ |
| 3281 | serr_ofs = mv_scr_offset(SCR_ERROR); |
| 3282 | writelfl(readl(port_mmio + serr_ofs), port_mmio + serr_ofs); |
| 3283 | writelfl(0, port_mmio + EDMA_ERR_IRQ_CAUSE_OFS); |
| 3284 | |
Mark Lord | 646a4da | 2008-01-26 18:30:37 -0500 | [diff] [blame] | 3285 | /* unmask all non-transient EDMA error interrupts */ |
| 3286 | writelfl(~EDMA_ERR_IRQ_TRANSIENT, port_mmio + EDMA_ERR_IRQ_MASK_OFS); |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 3287 | |
Jeff Garzik | 8b26024 | 2005-11-12 12:32:50 -0500 | [diff] [blame] | 3288 | 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] | 3289 | readl(port_mmio + EDMA_CFG_OFS), |
| 3290 | readl(port_mmio + EDMA_ERR_IRQ_CAUSE_OFS), |
| 3291 | readl(port_mmio + EDMA_ERR_IRQ_MASK_OFS)); |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 3292 | } |
| 3293 | |
Mark Lord | 616d4a9 | 2008-05-02 02:08:32 -0400 | [diff] [blame] | 3294 | static unsigned int mv_in_pcix_mode(struct ata_host *host) |
| 3295 | { |
| 3296 | struct mv_host_priv *hpriv = host->private_data; |
| 3297 | void __iomem *mmio = hpriv->base; |
| 3298 | u32 reg; |
| 3299 | |
Mark Lord | 1f39847 | 2008-05-27 17:54:48 -0400 | [diff] [blame] | 3300 | if (IS_SOC(hpriv) || !IS_PCIE(hpriv)) |
Mark Lord | 616d4a9 | 2008-05-02 02:08:32 -0400 | [diff] [blame] | 3301 | return 0; /* not PCI-X capable */ |
| 3302 | reg = readl(mmio + MV_PCI_MODE_OFS); |
| 3303 | if ((reg & MV_PCI_MODE_MASK) == 0) |
| 3304 | return 0; /* conventional PCI mode */ |
| 3305 | return 1; /* chip is in PCI-X mode */ |
| 3306 | } |
| 3307 | |
| 3308 | static int mv_pci_cut_through_okay(struct ata_host *host) |
| 3309 | { |
| 3310 | struct mv_host_priv *hpriv = host->private_data; |
| 3311 | void __iomem *mmio = hpriv->base; |
| 3312 | u32 reg; |
| 3313 | |
| 3314 | if (!mv_in_pcix_mode(host)) { |
| 3315 | reg = readl(mmio + PCI_COMMAND_OFS); |
| 3316 | if (reg & PCI_COMMAND_MRDTRIG) |
| 3317 | return 0; /* not okay */ |
| 3318 | } |
| 3319 | return 1; /* okay */ |
| 3320 | } |
| 3321 | |
Tejun Heo | 4447d35 | 2007-04-17 23:44:08 +0900 | [diff] [blame] | 3322 | 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] | 3323 | { |
Tejun Heo | 4447d35 | 2007-04-17 23:44:08 +0900 | [diff] [blame] | 3324 | struct pci_dev *pdev = to_pci_dev(host->dev); |
| 3325 | struct mv_host_priv *hpriv = host->private_data; |
Jeff Garzik | bca1c4e | 2005-11-12 12:48:15 -0500 | [diff] [blame] | 3326 | u32 hp_flags = hpriv->hp_flags; |
| 3327 | |
Jeff Garzik | 5796d1c | 2007-10-26 00:03:37 -0400 | [diff] [blame] | 3328 | switch (board_idx) { |
Jeff Garzik | 47c2b67 | 2005-11-12 21:13:17 -0500 | [diff] [blame] | 3329 | case chip_5080: |
| 3330 | hpriv->ops = &mv5xxx_ops; |
Jeff Garzik | ee9ccdf | 2007-07-12 15:51:22 -0400 | [diff] [blame] | 3331 | hp_flags |= MV_HP_GEN_I; |
Jeff Garzik | bca1c4e | 2005-11-12 12:48:15 -0500 | [diff] [blame] | 3332 | |
Auke Kok | 44c1013 | 2007-06-08 15:46:36 -0700 | [diff] [blame] | 3333 | switch (pdev->revision) { |
Jeff Garzik | 47c2b67 | 2005-11-12 21:13:17 -0500 | [diff] [blame] | 3334 | case 0x1: |
| 3335 | hp_flags |= MV_HP_ERRATA_50XXB0; |
| 3336 | break; |
| 3337 | case 0x3: |
| 3338 | hp_flags |= MV_HP_ERRATA_50XXB2; |
| 3339 | break; |
| 3340 | default: |
| 3341 | dev_printk(KERN_WARNING, &pdev->dev, |
| 3342 | "Applying 50XXB2 workarounds to unknown rev\n"); |
| 3343 | hp_flags |= MV_HP_ERRATA_50XXB2; |
| 3344 | break; |
| 3345 | } |
| 3346 | break; |
| 3347 | |
| 3348 | case chip_504x: |
| 3349 | case chip_508x: |
| 3350 | hpriv->ops = &mv5xxx_ops; |
Jeff Garzik | ee9ccdf | 2007-07-12 15:51:22 -0400 | [diff] [blame] | 3351 | hp_flags |= MV_HP_GEN_I; |
Jeff Garzik | 47c2b67 | 2005-11-12 21:13:17 -0500 | [diff] [blame] | 3352 | |
Auke Kok | 44c1013 | 2007-06-08 15:46:36 -0700 | [diff] [blame] | 3353 | switch (pdev->revision) { |
Jeff Garzik | 47c2b67 | 2005-11-12 21:13:17 -0500 | [diff] [blame] | 3354 | case 0x0: |
| 3355 | hp_flags |= MV_HP_ERRATA_50XXB0; |
| 3356 | break; |
| 3357 | case 0x3: |
| 3358 | hp_flags |= MV_HP_ERRATA_50XXB2; |
| 3359 | break; |
| 3360 | default: |
| 3361 | dev_printk(KERN_WARNING, &pdev->dev, |
| 3362 | "Applying B2 workarounds to unknown rev\n"); |
| 3363 | hp_flags |= MV_HP_ERRATA_50XXB2; |
| 3364 | break; |
Jeff Garzik | bca1c4e | 2005-11-12 12:48:15 -0500 | [diff] [blame] | 3365 | } |
| 3366 | break; |
| 3367 | |
| 3368 | case chip_604x: |
| 3369 | case chip_608x: |
Jeff Garzik | 47c2b67 | 2005-11-12 21:13:17 -0500 | [diff] [blame] | 3370 | hpriv->ops = &mv6xxx_ops; |
Jeff Garzik | ee9ccdf | 2007-07-12 15:51:22 -0400 | [diff] [blame] | 3371 | hp_flags |= MV_HP_GEN_II; |
Jeff Garzik | 47c2b67 | 2005-11-12 21:13:17 -0500 | [diff] [blame] | 3372 | |
Auke Kok | 44c1013 | 2007-06-08 15:46:36 -0700 | [diff] [blame] | 3373 | switch (pdev->revision) { |
Jeff Garzik | 47c2b67 | 2005-11-12 21:13:17 -0500 | [diff] [blame] | 3374 | case 0x7: |
| 3375 | hp_flags |= MV_HP_ERRATA_60X1B2; |
| 3376 | break; |
| 3377 | case 0x9: |
| 3378 | hp_flags |= MV_HP_ERRATA_60X1C0; |
Jeff Garzik | bca1c4e | 2005-11-12 12:48:15 -0500 | [diff] [blame] | 3379 | break; |
| 3380 | default: |
| 3381 | dev_printk(KERN_WARNING, &pdev->dev, |
Jeff Garzik | 47c2b67 | 2005-11-12 21:13:17 -0500 | [diff] [blame] | 3382 | "Applying B2 workarounds to unknown rev\n"); |
| 3383 | hp_flags |= MV_HP_ERRATA_60X1B2; |
Jeff Garzik | bca1c4e | 2005-11-12 12:48:15 -0500 | [diff] [blame] | 3384 | break; |
| 3385 | } |
| 3386 | break; |
| 3387 | |
Jeff Garzik | e4e7b89 | 2006-01-31 12:18:41 -0500 | [diff] [blame] | 3388 | case chip_7042: |
Mark Lord | 616d4a9 | 2008-05-02 02:08:32 -0400 | [diff] [blame] | 3389 | hp_flags |= MV_HP_PCIE | MV_HP_CUT_THROUGH; |
Mark Lord | 306b30f | 2007-12-04 14:07:52 -0500 | [diff] [blame] | 3390 | if (pdev->vendor == PCI_VENDOR_ID_TTI && |
| 3391 | (pdev->device == 0x2300 || pdev->device == 0x2310)) |
| 3392 | { |
Mark Lord | 4e52003 | 2007-12-11 12:58:05 -0500 | [diff] [blame] | 3393 | /* |
| 3394 | * Highpoint RocketRAID PCIe 23xx series cards: |
| 3395 | * |
| 3396 | * Unconfigured drives are treated as "Legacy" |
| 3397 | * by the BIOS, and it overwrites sector 8 with |
| 3398 | * a "Lgcy" metadata block prior to Linux boot. |
| 3399 | * |
| 3400 | * Configured drives (RAID or JBOD) leave sector 8 |
| 3401 | * alone, but instead overwrite a high numbered |
| 3402 | * sector for the RAID metadata. This sector can |
| 3403 | * be determined exactly, by truncating the physical |
| 3404 | * drive capacity to a nice even GB value. |
| 3405 | * |
| 3406 | * RAID metadata is at: (dev->n_sectors & ~0xfffff) |
| 3407 | * |
| 3408 | * Warn the user, lest they think we're just buggy. |
| 3409 | */ |
| 3410 | printk(KERN_WARNING DRV_NAME ": Highpoint RocketRAID" |
| 3411 | " BIOS CORRUPTS DATA on all attached drives," |
| 3412 | " regardless of if/how they are configured." |
| 3413 | " BEWARE!\n"); |
| 3414 | printk(KERN_WARNING DRV_NAME ": For data safety, do not" |
| 3415 | " use sectors 8-9 on \"Legacy\" drives," |
| 3416 | " and avoid the final two gigabytes on" |
| 3417 | " all RocketRAID BIOS initialized drives.\n"); |
Mark Lord | 306b30f | 2007-12-04 14:07:52 -0500 | [diff] [blame] | 3418 | } |
Mark Lord | 8e7decd | 2008-05-02 02:07:51 -0400 | [diff] [blame] | 3419 | /* drop through */ |
Jeff Garzik | e4e7b89 | 2006-01-31 12:18:41 -0500 | [diff] [blame] | 3420 | case chip_6042: |
| 3421 | hpriv->ops = &mv6xxx_ops; |
Jeff Garzik | e4e7b89 | 2006-01-31 12:18:41 -0500 | [diff] [blame] | 3422 | hp_flags |= MV_HP_GEN_IIE; |
Mark Lord | 616d4a9 | 2008-05-02 02:08:32 -0400 | [diff] [blame] | 3423 | if (board_idx == chip_6042 && mv_pci_cut_through_okay(host)) |
| 3424 | hp_flags |= MV_HP_CUT_THROUGH; |
Jeff Garzik | e4e7b89 | 2006-01-31 12:18:41 -0500 | [diff] [blame] | 3425 | |
Auke Kok | 44c1013 | 2007-06-08 15:46:36 -0700 | [diff] [blame] | 3426 | switch (pdev->revision) { |
Mark Lord | 5cf73bf | 2008-05-27 17:58:56 -0400 | [diff] [blame] | 3427 | case 0x2: /* Rev.B0: the first/only public release */ |
Jeff Garzik | e4e7b89 | 2006-01-31 12:18:41 -0500 | [diff] [blame] | 3428 | hp_flags |= MV_HP_ERRATA_60X1C0; |
| 3429 | break; |
| 3430 | default: |
| 3431 | dev_printk(KERN_WARNING, &pdev->dev, |
| 3432 | "Applying 60X1C0 workarounds to unknown rev\n"); |
| 3433 | hp_flags |= MV_HP_ERRATA_60X1C0; |
| 3434 | break; |
| 3435 | } |
| 3436 | break; |
Saeed Bishara | f351b2d | 2008-02-01 18:08:03 -0500 | [diff] [blame] | 3437 | case chip_soc: |
| 3438 | hpriv->ops = &mv_soc_ops; |
Saeed Bishara | eb3a55a | 2008-08-04 00:52:55 -1100 | [diff] [blame] | 3439 | hp_flags |= MV_HP_FLAG_SOC | MV_HP_GEN_IIE | |
| 3440 | MV_HP_ERRATA_60X1C0; |
Saeed Bishara | f351b2d | 2008-02-01 18:08:03 -0500 | [diff] [blame] | 3441 | break; |
Jeff Garzik | e4e7b89 | 2006-01-31 12:18:41 -0500 | [diff] [blame] | 3442 | |
Jeff Garzik | bca1c4e | 2005-11-12 12:48:15 -0500 | [diff] [blame] | 3443 | default: |
Saeed Bishara | f351b2d | 2008-02-01 18:08:03 -0500 | [diff] [blame] | 3444 | dev_printk(KERN_ERR, host->dev, |
Jeff Garzik | 5796d1c | 2007-10-26 00:03:37 -0400 | [diff] [blame] | 3445 | "BUG: invalid board index %u\n", board_idx); |
Jeff Garzik | bca1c4e | 2005-11-12 12:48:15 -0500 | [diff] [blame] | 3446 | return 1; |
| 3447 | } |
| 3448 | |
| 3449 | hpriv->hp_flags = hp_flags; |
Mark Lord | 02a121d | 2007-12-01 13:07:22 -0500 | [diff] [blame] | 3450 | if (hp_flags & MV_HP_PCIE) { |
| 3451 | hpriv->irq_cause_ofs = PCIE_IRQ_CAUSE_OFS; |
| 3452 | hpriv->irq_mask_ofs = PCIE_IRQ_MASK_OFS; |
| 3453 | hpriv->unmask_all_irqs = PCIE_UNMASK_ALL_IRQS; |
| 3454 | } else { |
| 3455 | hpriv->irq_cause_ofs = PCI_IRQ_CAUSE_OFS; |
| 3456 | hpriv->irq_mask_ofs = PCI_IRQ_MASK_OFS; |
| 3457 | hpriv->unmask_all_irqs = PCI_UNMASK_ALL_IRQS; |
| 3458 | } |
Jeff Garzik | bca1c4e | 2005-11-12 12:48:15 -0500 | [diff] [blame] | 3459 | |
| 3460 | return 0; |
| 3461 | } |
| 3462 | |
Brett Russ | 05b308e | 2005-10-05 17:08:53 -0400 | [diff] [blame] | 3463 | /** |
Jeff Garzik | 47c2b67 | 2005-11-12 21:13:17 -0500 | [diff] [blame] | 3464 | * mv_init_host - Perform some early initialization of the host. |
Tejun Heo | 4447d35 | 2007-04-17 23:44:08 +0900 | [diff] [blame] | 3465 | * @host: ATA host to initialize |
| 3466 | * @board_idx: controller index |
Brett Russ | 05b308e | 2005-10-05 17:08:53 -0400 | [diff] [blame] | 3467 | * |
| 3468 | * If possible, do an early global reset of the host. Then do |
| 3469 | * our port init and clear/unmask all/relevant host interrupts. |
| 3470 | * |
| 3471 | * LOCKING: |
| 3472 | * Inherited from caller. |
| 3473 | */ |
Tejun Heo | 4447d35 | 2007-04-17 23:44:08 +0900 | [diff] [blame] | 3474 | 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] | 3475 | { |
| 3476 | int rc = 0, n_hc, port, hc; |
Tejun Heo | 4447d35 | 2007-04-17 23:44:08 +0900 | [diff] [blame] | 3477 | struct mv_host_priv *hpriv = host->private_data; |
Saeed Bishara | f351b2d | 2008-02-01 18:08:03 -0500 | [diff] [blame] | 3478 | void __iomem *mmio = hpriv->base; |
Jeff Garzik | 47c2b67 | 2005-11-12 21:13:17 -0500 | [diff] [blame] | 3479 | |
Tejun Heo | 4447d35 | 2007-04-17 23:44:08 +0900 | [diff] [blame] | 3480 | rc = mv_chip_id(host, board_idx); |
Jeff Garzik | bca1c4e | 2005-11-12 12:48:15 -0500 | [diff] [blame] | 3481 | if (rc) |
Mark Lord | 352fab7 | 2008-04-19 14:43:42 -0400 | [diff] [blame] | 3482 | goto done; |
Saeed Bishara | f351b2d | 2008-02-01 18:08:03 -0500 | [diff] [blame] | 3483 | |
Mark Lord | 1f39847 | 2008-05-27 17:54:48 -0400 | [diff] [blame] | 3484 | if (IS_SOC(hpriv)) { |
Mark Lord | 7368f91 | 2008-04-25 11:24:24 -0400 | [diff] [blame] | 3485 | hpriv->main_irq_cause_addr = mmio + SOC_HC_MAIN_IRQ_CAUSE_OFS; |
| 3486 | hpriv->main_irq_mask_addr = mmio + SOC_HC_MAIN_IRQ_MASK_OFS; |
Mark Lord | 1f39847 | 2008-05-27 17:54:48 -0400 | [diff] [blame] | 3487 | } else { |
| 3488 | hpriv->main_irq_cause_addr = mmio + PCI_HC_MAIN_IRQ_CAUSE_OFS; |
| 3489 | hpriv->main_irq_mask_addr = mmio + PCI_HC_MAIN_IRQ_MASK_OFS; |
Saeed Bishara | f351b2d | 2008-02-01 18:08:03 -0500 | [diff] [blame] | 3490 | } |
Mark Lord | 352fab7 | 2008-04-19 14:43:42 -0400 | [diff] [blame] | 3491 | |
Thomas Reitmayr | 5d0fb2e | 2009-01-24 20:24:58 +0100 | [diff] [blame] | 3492 | /* initialize shadow irq mask with register's value */ |
| 3493 | hpriv->main_irq_mask = readl(hpriv->main_irq_mask_addr); |
| 3494 | |
Mark Lord | 352fab7 | 2008-04-19 14:43:42 -0400 | [diff] [blame] | 3495 | /* global interrupt mask: 0 == mask everything */ |
Mark Lord | c4de573 | 2008-05-17 13:35:21 -0400 | [diff] [blame] | 3496 | mv_set_main_irq_mask(host, ~0, 0); |
Jeff Garzik | bca1c4e | 2005-11-12 12:48:15 -0500 | [diff] [blame] | 3497 | |
Tejun Heo | 4447d35 | 2007-04-17 23:44:08 +0900 | [diff] [blame] | 3498 | n_hc = mv_get_hc_count(host->ports[0]->flags); |
Jeff Garzik | bca1c4e | 2005-11-12 12:48:15 -0500 | [diff] [blame] | 3499 | |
Tejun Heo | 4447d35 | 2007-04-17 23:44:08 +0900 | [diff] [blame] | 3500 | for (port = 0; port < host->n_ports; port++) |
Jeff Garzik | 47c2b67 | 2005-11-12 21:13:17 -0500 | [diff] [blame] | 3501 | hpriv->ops->read_preamp(hpriv, port, mmio); |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 3502 | |
Jeff Garzik | c9d3913 | 2005-11-13 17:47:51 -0500 | [diff] [blame] | 3503 | rc = hpriv->ops->reset_hc(hpriv, mmio, n_hc); |
Jeff Garzik | 47c2b67 | 2005-11-12 21:13:17 -0500 | [diff] [blame] | 3504 | if (rc) |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 3505 | goto done; |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 3506 | |
Jeff Garzik | 522479f | 2005-11-12 22:14:02 -0500 | [diff] [blame] | 3507 | hpriv->ops->reset_flash(hpriv, mmio); |
Saeed Bishara | 7bb3c52 | 2008-01-30 11:50:45 -1100 | [diff] [blame] | 3508 | hpriv->ops->reset_bus(host, mmio); |
Jeff Garzik | 47c2b67 | 2005-11-12 21:13:17 -0500 | [diff] [blame] | 3509 | hpriv->ops->enable_leds(hpriv, mmio); |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 3510 | |
Tejun Heo | 4447d35 | 2007-04-17 23:44:08 +0900 | [diff] [blame] | 3511 | for (port = 0; port < host->n_ports; port++) { |
Tejun Heo | cbcdd87 | 2007-08-18 13:14:55 +0900 | [diff] [blame] | 3512 | struct ata_port *ap = host->ports[port]; |
Jeff Garzik | 2a47ce0 | 2005-11-12 23:05:14 -0500 | [diff] [blame] | 3513 | void __iomem *port_mmio = mv_port_base(mmio, port); |
Tejun Heo | cbcdd87 | 2007-08-18 13:14:55 +0900 | [diff] [blame] | 3514 | |
| 3515 | mv_port_init(&ap->ioaddr, port_mmio); |
| 3516 | |
Saeed Bishara | 7bb3c52 | 2008-01-30 11:50:45 -1100 | [diff] [blame] | 3517 | #ifdef CONFIG_PCI |
Mark Lord | 1f39847 | 2008-05-27 17:54:48 -0400 | [diff] [blame] | 3518 | if (!IS_SOC(hpriv)) { |
Saeed Bishara | f351b2d | 2008-02-01 18:08:03 -0500 | [diff] [blame] | 3519 | unsigned int offset = port_mmio - mmio; |
| 3520 | ata_port_pbar_desc(ap, MV_PRIMARY_BAR, -1, "mmio"); |
| 3521 | ata_port_pbar_desc(ap, MV_PRIMARY_BAR, offset, "port"); |
| 3522 | } |
Saeed Bishara | 7bb3c52 | 2008-01-30 11:50:45 -1100 | [diff] [blame] | 3523 | #endif |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 3524 | } |
| 3525 | |
| 3526 | for (hc = 0; hc < n_hc; hc++) { |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 3527 | void __iomem *hc_mmio = mv_hc_base(mmio, hc); |
| 3528 | |
| 3529 | VPRINTK("HC%i: HC config=0x%08x HC IRQ cause " |
| 3530 | "(before clear)=0x%08x\n", hc, |
| 3531 | readl(hc_mmio + HC_CFG_OFS), |
| 3532 | readl(hc_mmio + HC_IRQ_CAUSE_OFS)); |
| 3533 | |
| 3534 | /* Clear any currently outstanding hc interrupt conditions */ |
| 3535 | writelfl(0, hc_mmio + HC_IRQ_CAUSE_OFS); |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 3536 | } |
| 3537 | |
Mark Lord | 6be96ac | 2009-02-19 10:38:04 -0500 | [diff] [blame] | 3538 | /* Clear any currently outstanding host interrupt conditions */ |
| 3539 | writelfl(0, mmio + hpriv->irq_cause_ofs); |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 3540 | |
Mark Lord | 6be96ac | 2009-02-19 10:38:04 -0500 | [diff] [blame] | 3541 | /* and unmask interrupt generation for host regs */ |
| 3542 | writelfl(hpriv->unmask_all_irqs, mmio + hpriv->irq_mask_ofs); |
Jeff Garzik | fb621e2 | 2007-02-25 04:19:45 -0500 | [diff] [blame] | 3543 | |
Mark Lord | 6be96ac | 2009-02-19 10:38:04 -0500 | [diff] [blame] | 3544 | /* |
| 3545 | * enable only global host interrupts for now. |
| 3546 | * The per-port interrupts get done later as ports are set up. |
| 3547 | */ |
| 3548 | mv_set_main_irq_mask(host, 0, PCI_ERR); |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 3549 | done: |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 3550 | return rc; |
| 3551 | } |
| 3552 | |
Byron Bradley | fbf14e2 | 2008-02-10 21:17:30 +0000 | [diff] [blame] | 3553 | static int mv_create_dma_pools(struct mv_host_priv *hpriv, struct device *dev) |
| 3554 | { |
| 3555 | hpriv->crqb_pool = dmam_pool_create("crqb_q", dev, MV_CRQB_Q_SZ, |
| 3556 | MV_CRQB_Q_SZ, 0); |
| 3557 | if (!hpriv->crqb_pool) |
| 3558 | return -ENOMEM; |
| 3559 | |
| 3560 | hpriv->crpb_pool = dmam_pool_create("crpb_q", dev, MV_CRPB_Q_SZ, |
| 3561 | MV_CRPB_Q_SZ, 0); |
| 3562 | if (!hpriv->crpb_pool) |
| 3563 | return -ENOMEM; |
| 3564 | |
| 3565 | hpriv->sg_tbl_pool = dmam_pool_create("sg_tbl", dev, MV_SG_TBL_SZ, |
| 3566 | MV_SG_TBL_SZ, 0); |
| 3567 | if (!hpriv->sg_tbl_pool) |
| 3568 | return -ENOMEM; |
| 3569 | |
| 3570 | return 0; |
| 3571 | } |
| 3572 | |
Lennert Buytenhek | 15a3263 | 2008-03-27 14:51:39 -0400 | [diff] [blame] | 3573 | static void mv_conf_mbus_windows(struct mv_host_priv *hpriv, |
| 3574 | struct mbus_dram_target_info *dram) |
| 3575 | { |
| 3576 | int i; |
| 3577 | |
| 3578 | for (i = 0; i < 4; i++) { |
| 3579 | writel(0, hpriv->base + WINDOW_CTRL(i)); |
| 3580 | writel(0, hpriv->base + WINDOW_BASE(i)); |
| 3581 | } |
| 3582 | |
| 3583 | for (i = 0; i < dram->num_cs; i++) { |
| 3584 | struct mbus_dram_window *cs = dram->cs + i; |
| 3585 | |
| 3586 | writel(((cs->size - 1) & 0xffff0000) | |
| 3587 | (cs->mbus_attr << 8) | |
| 3588 | (dram->mbus_dram_target_id << 4) | 1, |
| 3589 | hpriv->base + WINDOW_CTRL(i)); |
| 3590 | writel(cs->base, hpriv->base + WINDOW_BASE(i)); |
| 3591 | } |
| 3592 | } |
| 3593 | |
Saeed Bishara | f351b2d | 2008-02-01 18:08:03 -0500 | [diff] [blame] | 3594 | /** |
| 3595 | * mv_platform_probe - handle a positive probe of an soc Marvell |
| 3596 | * host |
| 3597 | * @pdev: platform device found |
| 3598 | * |
| 3599 | * LOCKING: |
| 3600 | * Inherited from caller. |
| 3601 | */ |
| 3602 | static int mv_platform_probe(struct platform_device *pdev) |
| 3603 | { |
| 3604 | static int printed_version; |
| 3605 | const struct mv_sata_platform_data *mv_platform_data; |
| 3606 | const struct ata_port_info *ppi[] = |
| 3607 | { &mv_port_info[chip_soc], NULL }; |
| 3608 | struct ata_host *host; |
| 3609 | struct mv_host_priv *hpriv; |
| 3610 | struct resource *res; |
| 3611 | int n_ports, rc; |
| 3612 | |
| 3613 | if (!printed_version++) |
| 3614 | dev_printk(KERN_INFO, &pdev->dev, "version " DRV_VERSION "\n"); |
| 3615 | |
| 3616 | /* |
| 3617 | * Simple resource validation .. |
| 3618 | */ |
| 3619 | if (unlikely(pdev->num_resources != 2)) { |
| 3620 | dev_err(&pdev->dev, "invalid number of resources\n"); |
| 3621 | return -EINVAL; |
| 3622 | } |
| 3623 | |
| 3624 | /* |
| 3625 | * Get the register base first |
| 3626 | */ |
| 3627 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
| 3628 | if (res == NULL) |
| 3629 | return -EINVAL; |
| 3630 | |
| 3631 | /* allocate host */ |
| 3632 | mv_platform_data = pdev->dev.platform_data; |
| 3633 | n_ports = mv_platform_data->n_ports; |
| 3634 | |
| 3635 | host = ata_host_alloc_pinfo(&pdev->dev, ppi, n_ports); |
| 3636 | hpriv = devm_kzalloc(&pdev->dev, sizeof(*hpriv), GFP_KERNEL); |
| 3637 | |
| 3638 | if (!host || !hpriv) |
| 3639 | return -ENOMEM; |
| 3640 | host->private_data = hpriv; |
| 3641 | hpriv->n_ports = n_ports; |
| 3642 | |
| 3643 | host->iomap = NULL; |
Saeed Bishara | f1cb0ea | 2008-02-18 07:42:28 -1100 | [diff] [blame] | 3644 | hpriv->base = devm_ioremap(&pdev->dev, res->start, |
| 3645 | res->end - res->start + 1); |
Saeed Bishara | f351b2d | 2008-02-01 18:08:03 -0500 | [diff] [blame] | 3646 | hpriv->base -= MV_SATAHC0_REG_BASE; |
| 3647 | |
Lennert Buytenhek | 15a3263 | 2008-03-27 14:51:39 -0400 | [diff] [blame] | 3648 | /* |
| 3649 | * (Re-)program MBUS remapping windows if we are asked to. |
| 3650 | */ |
| 3651 | if (mv_platform_data->dram != NULL) |
| 3652 | mv_conf_mbus_windows(hpriv, mv_platform_data->dram); |
| 3653 | |
Byron Bradley | fbf14e2 | 2008-02-10 21:17:30 +0000 | [diff] [blame] | 3654 | rc = mv_create_dma_pools(hpriv, &pdev->dev); |
| 3655 | if (rc) |
| 3656 | return rc; |
| 3657 | |
Saeed Bishara | f351b2d | 2008-02-01 18:08:03 -0500 | [diff] [blame] | 3658 | /* initialize adapter */ |
| 3659 | rc = mv_init_host(host, chip_soc); |
| 3660 | if (rc) |
| 3661 | return rc; |
| 3662 | |
| 3663 | dev_printk(KERN_INFO, &pdev->dev, |
| 3664 | "slots %u ports %d\n", (unsigned)MV_MAX_Q_DEPTH, |
| 3665 | host->n_ports); |
| 3666 | |
| 3667 | return ata_host_activate(host, platform_get_irq(pdev, 0), mv_interrupt, |
| 3668 | IRQF_SHARED, &mv6_sht); |
| 3669 | } |
| 3670 | |
| 3671 | /* |
| 3672 | * |
| 3673 | * mv_platform_remove - unplug a platform interface |
| 3674 | * @pdev: platform device |
| 3675 | * |
| 3676 | * A platform bus SATA device has been unplugged. Perform the needed |
| 3677 | * cleanup. Also called on module unload for any active devices. |
| 3678 | */ |
| 3679 | static int __devexit mv_platform_remove(struct platform_device *pdev) |
| 3680 | { |
| 3681 | struct device *dev = &pdev->dev; |
| 3682 | struct ata_host *host = dev_get_drvdata(dev); |
Saeed Bishara | f351b2d | 2008-02-01 18:08:03 -0500 | [diff] [blame] | 3683 | |
| 3684 | ata_host_detach(host); |
Saeed Bishara | f351b2d | 2008-02-01 18:08:03 -0500 | [diff] [blame] | 3685 | return 0; |
| 3686 | } |
| 3687 | |
| 3688 | static struct platform_driver mv_platform_driver = { |
| 3689 | .probe = mv_platform_probe, |
| 3690 | .remove = __devexit_p(mv_platform_remove), |
| 3691 | .driver = { |
| 3692 | .name = DRV_NAME, |
| 3693 | .owner = THIS_MODULE, |
| 3694 | }, |
| 3695 | }; |
| 3696 | |
| 3697 | |
Saeed Bishara | 7bb3c52 | 2008-01-30 11:50:45 -1100 | [diff] [blame] | 3698 | #ifdef CONFIG_PCI |
Saeed Bishara | f351b2d | 2008-02-01 18:08:03 -0500 | [diff] [blame] | 3699 | static int mv_pci_init_one(struct pci_dev *pdev, |
| 3700 | const struct pci_device_id *ent); |
| 3701 | |
Saeed Bishara | 7bb3c52 | 2008-01-30 11:50:45 -1100 | [diff] [blame] | 3702 | |
| 3703 | static struct pci_driver mv_pci_driver = { |
| 3704 | .name = DRV_NAME, |
| 3705 | .id_table = mv_pci_tbl, |
Saeed Bishara | f351b2d | 2008-02-01 18:08:03 -0500 | [diff] [blame] | 3706 | .probe = mv_pci_init_one, |
Saeed Bishara | 7bb3c52 | 2008-01-30 11:50:45 -1100 | [diff] [blame] | 3707 | .remove = ata_pci_remove_one, |
| 3708 | }; |
| 3709 | |
Saeed Bishara | 7bb3c52 | 2008-01-30 11:50:45 -1100 | [diff] [blame] | 3710 | /* move to PCI layer or libata core? */ |
| 3711 | static int pci_go_64(struct pci_dev *pdev) |
| 3712 | { |
| 3713 | int rc; |
| 3714 | |
| 3715 | if (!pci_set_dma_mask(pdev, DMA_64BIT_MASK)) { |
| 3716 | rc = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK); |
| 3717 | if (rc) { |
| 3718 | rc = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK); |
| 3719 | if (rc) { |
| 3720 | dev_printk(KERN_ERR, &pdev->dev, |
| 3721 | "64-bit DMA enable failed\n"); |
| 3722 | return rc; |
| 3723 | } |
| 3724 | } |
| 3725 | } else { |
| 3726 | rc = pci_set_dma_mask(pdev, DMA_32BIT_MASK); |
| 3727 | if (rc) { |
| 3728 | dev_printk(KERN_ERR, &pdev->dev, |
| 3729 | "32-bit DMA enable failed\n"); |
| 3730 | return rc; |
| 3731 | } |
| 3732 | rc = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK); |
| 3733 | if (rc) { |
| 3734 | dev_printk(KERN_ERR, &pdev->dev, |
| 3735 | "32-bit consistent DMA enable failed\n"); |
| 3736 | return rc; |
| 3737 | } |
| 3738 | } |
| 3739 | |
| 3740 | return rc; |
| 3741 | } |
| 3742 | |
Brett Russ | 05b308e | 2005-10-05 17:08:53 -0400 | [diff] [blame] | 3743 | /** |
| 3744 | * mv_print_info - Dump key info to kernel log for perusal. |
Tejun Heo | 4447d35 | 2007-04-17 23:44:08 +0900 | [diff] [blame] | 3745 | * @host: ATA host to print info about |
Brett Russ | 05b308e | 2005-10-05 17:08:53 -0400 | [diff] [blame] | 3746 | * |
| 3747 | * FIXME: complete this. |
| 3748 | * |
| 3749 | * LOCKING: |
| 3750 | * Inherited from caller. |
| 3751 | */ |
Tejun Heo | 4447d35 | 2007-04-17 23:44:08 +0900 | [diff] [blame] | 3752 | static void mv_print_info(struct ata_host *host) |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 3753 | { |
Tejun Heo | 4447d35 | 2007-04-17 23:44:08 +0900 | [diff] [blame] | 3754 | struct pci_dev *pdev = to_pci_dev(host->dev); |
| 3755 | struct mv_host_priv *hpriv = host->private_data; |
Auke Kok | 44c1013 | 2007-06-08 15:46:36 -0700 | [diff] [blame] | 3756 | u8 scc; |
Jeff Garzik | c1e4fe7 | 2007-07-09 12:29:31 -0400 | [diff] [blame] | 3757 | const char *scc_s, *gen; |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 3758 | |
| 3759 | /* Use this to determine the HW stepping of the chip so we know |
| 3760 | * what errata to workaround |
| 3761 | */ |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 3762 | pci_read_config_byte(pdev, PCI_CLASS_DEVICE, &scc); |
| 3763 | if (scc == 0) |
| 3764 | scc_s = "SCSI"; |
| 3765 | else if (scc == 0x01) |
| 3766 | scc_s = "RAID"; |
| 3767 | else |
Jeff Garzik | c1e4fe7 | 2007-07-09 12:29:31 -0400 | [diff] [blame] | 3768 | scc_s = "?"; |
| 3769 | |
| 3770 | if (IS_GEN_I(hpriv)) |
| 3771 | gen = "I"; |
| 3772 | else if (IS_GEN_II(hpriv)) |
| 3773 | gen = "II"; |
| 3774 | else if (IS_GEN_IIE(hpriv)) |
| 3775 | gen = "IIE"; |
| 3776 | else |
| 3777 | gen = "?"; |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 3778 | |
Jeff Garzik | a9524a7 | 2005-10-30 14:39:11 -0500 | [diff] [blame] | 3779 | dev_printk(KERN_INFO, &pdev->dev, |
Jeff Garzik | c1e4fe7 | 2007-07-09 12:29:31 -0400 | [diff] [blame] | 3780 | "Gen-%s %u slots %u ports %s mode IRQ via %s\n", |
| 3781 | gen, (unsigned)MV_MAX_Q_DEPTH, host->n_ports, |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 3782 | scc_s, (MV_HP_FLAG_MSI & hpriv->hp_flags) ? "MSI" : "INTx"); |
| 3783 | } |
| 3784 | |
Brett Russ | 05b308e | 2005-10-05 17:08:53 -0400 | [diff] [blame] | 3785 | /** |
Saeed Bishara | f351b2d | 2008-02-01 18:08:03 -0500 | [diff] [blame] | 3786 | * 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] | 3787 | * @pdev: PCI device found |
| 3788 | * @ent: PCI device ID entry for the matched host |
| 3789 | * |
| 3790 | * LOCKING: |
| 3791 | * Inherited from caller. |
| 3792 | */ |
Saeed Bishara | f351b2d | 2008-02-01 18:08:03 -0500 | [diff] [blame] | 3793 | static int mv_pci_init_one(struct pci_dev *pdev, |
| 3794 | const struct pci_device_id *ent) |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 3795 | { |
Jeff Garzik | 2dcb407 | 2007-10-19 06:42:56 -0400 | [diff] [blame] | 3796 | static int printed_version; |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 3797 | unsigned int board_idx = (unsigned int)ent->driver_data; |
Tejun Heo | 4447d35 | 2007-04-17 23:44:08 +0900 | [diff] [blame] | 3798 | const struct ata_port_info *ppi[] = { &mv_port_info[board_idx], NULL }; |
| 3799 | struct ata_host *host; |
| 3800 | struct mv_host_priv *hpriv; |
| 3801 | int n_ports, rc; |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 3802 | |
Jeff Garzik | a9524a7 | 2005-10-30 14:39:11 -0500 | [diff] [blame] | 3803 | if (!printed_version++) |
| 3804 | dev_printk(KERN_INFO, &pdev->dev, "version " DRV_VERSION "\n"); |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 3805 | |
Tejun Heo | 4447d35 | 2007-04-17 23:44:08 +0900 | [diff] [blame] | 3806 | /* allocate host */ |
| 3807 | n_ports = mv_get_hc_count(ppi[0]->flags) * MV_PORTS_PER_HC; |
| 3808 | |
| 3809 | host = ata_host_alloc_pinfo(&pdev->dev, ppi, n_ports); |
| 3810 | hpriv = devm_kzalloc(&pdev->dev, sizeof(*hpriv), GFP_KERNEL); |
| 3811 | if (!host || !hpriv) |
| 3812 | return -ENOMEM; |
| 3813 | host->private_data = hpriv; |
Saeed Bishara | f351b2d | 2008-02-01 18:08:03 -0500 | [diff] [blame] | 3814 | hpriv->n_ports = n_ports; |
Tejun Heo | 4447d35 | 2007-04-17 23:44:08 +0900 | [diff] [blame] | 3815 | |
| 3816 | /* acquire resources */ |
Tejun Heo | 24dc5f3 | 2007-01-20 16:00:28 +0900 | [diff] [blame] | 3817 | rc = pcim_enable_device(pdev); |
| 3818 | if (rc) |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 3819 | return rc; |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 3820 | |
Tejun Heo | 0d5ff56 | 2007-02-01 15:06:36 +0900 | [diff] [blame] | 3821 | rc = pcim_iomap_regions(pdev, 1 << MV_PRIMARY_BAR, DRV_NAME); |
| 3822 | if (rc == -EBUSY) |
Tejun Heo | 24dc5f3 | 2007-01-20 16:00:28 +0900 | [diff] [blame] | 3823 | pcim_pin_device(pdev); |
Tejun Heo | 0d5ff56 | 2007-02-01 15:06:36 +0900 | [diff] [blame] | 3824 | if (rc) |
Tejun Heo | 24dc5f3 | 2007-01-20 16:00:28 +0900 | [diff] [blame] | 3825 | return rc; |
Tejun Heo | 4447d35 | 2007-04-17 23:44:08 +0900 | [diff] [blame] | 3826 | host->iomap = pcim_iomap_table(pdev); |
Saeed Bishara | f351b2d | 2008-02-01 18:08:03 -0500 | [diff] [blame] | 3827 | hpriv->base = host->iomap[MV_PRIMARY_BAR]; |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 3828 | |
Jeff Garzik | d88184f | 2007-02-26 01:26:06 -0500 | [diff] [blame] | 3829 | rc = pci_go_64(pdev); |
| 3830 | if (rc) |
| 3831 | return rc; |
| 3832 | |
Mark Lord | da2fa9b | 2008-01-26 18:32:45 -0500 | [diff] [blame] | 3833 | rc = mv_create_dma_pools(hpriv, &pdev->dev); |
| 3834 | if (rc) |
| 3835 | return rc; |
| 3836 | |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 3837 | /* initialize adapter */ |
Tejun Heo | 4447d35 | 2007-04-17 23:44:08 +0900 | [diff] [blame] | 3838 | rc = mv_init_host(host, board_idx); |
Tejun Heo | 24dc5f3 | 2007-01-20 16:00:28 +0900 | [diff] [blame] | 3839 | if (rc) |
| 3840 | return rc; |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 3841 | |
Mark Lord | 6d3c30e | 2009-01-21 10:31:29 -0500 | [diff] [blame] | 3842 | /* Enable message-switched interrupts, if requested */ |
| 3843 | if (msi && pci_enable_msi(pdev) == 0) |
| 3844 | hpriv->hp_flags |= MV_HP_FLAG_MSI; |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 3845 | |
Brett Russ | 3196194 | 2005-09-30 01:36:00 -0400 | [diff] [blame] | 3846 | mv_dump_pci_cfg(pdev, 0x68); |
Tejun Heo | 4447d35 | 2007-04-17 23:44:08 +0900 | [diff] [blame] | 3847 | mv_print_info(host); |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 3848 | |
Tejun Heo | 4447d35 | 2007-04-17 23:44:08 +0900 | [diff] [blame] | 3849 | pci_set_master(pdev); |
Jeff Garzik | ea8b4db | 2007-07-17 02:21:50 -0400 | [diff] [blame] | 3850 | pci_try_set_mwi(pdev); |
Tejun Heo | 4447d35 | 2007-04-17 23:44:08 +0900 | [diff] [blame] | 3851 | return ata_host_activate(host, pdev->irq, mv_interrupt, IRQF_SHARED, |
Jeff Garzik | c5d3e45 | 2007-07-11 18:30:50 -0400 | [diff] [blame] | 3852 | IS_GEN_I(hpriv) ? &mv5_sht : &mv6_sht); |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 3853 | } |
Saeed Bishara | 7bb3c52 | 2008-01-30 11:50:45 -1100 | [diff] [blame] | 3854 | #endif |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 3855 | |
Saeed Bishara | f351b2d | 2008-02-01 18:08:03 -0500 | [diff] [blame] | 3856 | static int mv_platform_probe(struct platform_device *pdev); |
| 3857 | static int __devexit mv_platform_remove(struct platform_device *pdev); |
| 3858 | |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 3859 | static int __init mv_init(void) |
| 3860 | { |
Saeed Bishara | 7bb3c52 | 2008-01-30 11:50:45 -1100 | [diff] [blame] | 3861 | int rc = -ENODEV; |
| 3862 | #ifdef CONFIG_PCI |
| 3863 | rc = pci_register_driver(&mv_pci_driver); |
Saeed Bishara | f351b2d | 2008-02-01 18:08:03 -0500 | [diff] [blame] | 3864 | if (rc < 0) |
| 3865 | return rc; |
| 3866 | #endif |
| 3867 | rc = platform_driver_register(&mv_platform_driver); |
| 3868 | |
| 3869 | #ifdef CONFIG_PCI |
| 3870 | if (rc < 0) |
| 3871 | pci_unregister_driver(&mv_pci_driver); |
Saeed Bishara | 7bb3c52 | 2008-01-30 11:50:45 -1100 | [diff] [blame] | 3872 | #endif |
| 3873 | return rc; |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 3874 | } |
| 3875 | |
| 3876 | static void __exit mv_exit(void) |
| 3877 | { |
Saeed Bishara | 7bb3c52 | 2008-01-30 11:50:45 -1100 | [diff] [blame] | 3878 | #ifdef CONFIG_PCI |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 3879 | pci_unregister_driver(&mv_pci_driver); |
Saeed Bishara | 7bb3c52 | 2008-01-30 11:50:45 -1100 | [diff] [blame] | 3880 | #endif |
Saeed Bishara | f351b2d | 2008-02-01 18:08:03 -0500 | [diff] [blame] | 3881 | platform_driver_unregister(&mv_platform_driver); |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 3882 | } |
| 3883 | |
| 3884 | MODULE_AUTHOR("Brett Russ"); |
| 3885 | MODULE_DESCRIPTION("SCSI low-level driver for Marvell SATA controllers"); |
| 3886 | MODULE_LICENSE("GPL"); |
| 3887 | MODULE_DEVICE_TABLE(pci, mv_pci_tbl); |
| 3888 | MODULE_VERSION(DRV_VERSION); |
Mark Lord | 17c5aab | 2008-04-16 14:56:51 -0400 | [diff] [blame] | 3889 | MODULE_ALIAS("platform:" DRV_NAME); |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 3890 | |
Brett Russ | 20f733e | 2005-09-01 18:26:17 -0400 | [diff] [blame] | 3891 | module_init(mv_init); |
| 3892 | module_exit(mv_exit); |