2 * sata_mv.c - Marvell SATA support
4 * Copyright 2008: Marvell Corporation, all rights reserved.
5 * Copyright 2005: EMC Corporation, all rights reserved.
6 * Copyright 2005 Red Hat, Inc. All rights reserved.
8 * Please ALWAYS copy linux-ide@vger.kernel.org on emails.
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; version 2 of the License.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
28 * --> Errata workaround for NCQ device errors.
30 * --> More errata workarounds for PCI-X.
32 * --> Complete a full errata audit for all chipsets to identify others.
34 * --> ATAPI support (Marvell claims the 60xx/70xx chips can do it).
36 * --> Investigate problems with PCI Message Signalled Interrupts (MSI).
38 * --> Cache frequently-accessed registers in mv_port_priv to reduce overhead.
40 * --> Develop a low-power-consumption strategy, and implement it.
42 * --> [Experiment, low priority] Investigate interrupt coalescing.
43 * Quite often, especially with PCI Message Signalled Interrupts (MSI),
44 * the overhead reduced by interrupt mitigation is quite often not
45 * worth the latency cost.
47 * --> [Experiment, Marvell value added] Is it possible to use target
48 * mode to cross-connect two Linux boxes with Marvell cards? If so,
49 * creating LibATA target mode support would be very interesting.
51 * Target mode, for those without docs, is the ability to directly
52 * connect two SATA ports.
55 #include <linux/kernel.h>
56 #include <linux/module.h>
57 #include <linux/pci.h>
58 #include <linux/init.h>
59 #include <linux/blkdev.h>
60 #include <linux/delay.h>
61 #include <linux/interrupt.h>
62 #include <linux/dmapool.h>
63 #include <linux/dma-mapping.h>
64 #include <linux/device.h>
65 #include <linux/platform_device.h>
66 #include <linux/ata_platform.h>
67 #include <linux/mbus.h>
68 #include <linux/bitops.h>
69 #include <scsi/scsi_host.h>
70 #include <scsi/scsi_cmnd.h>
71 #include <scsi/scsi_device.h>
72 #include <linux/libata.h>
74 #define DRV_NAME "sata_mv"
75 #define DRV_VERSION "1.24"
78 /* BAR's are enumerated in terms of pci_resource_start() terms */
79 MV_PRIMARY_BAR = 0, /* offset 0x10: memory space */
80 MV_IO_BAR = 2, /* offset 0x18: IO space */
81 MV_MISC_BAR = 3, /* offset 0x1c: FLASH, NVRAM, SRAM */
83 MV_MAJOR_REG_AREA_SZ = 0x10000, /* 64KB */
84 MV_MINOR_REG_AREA_SZ = 0x2000, /* 8KB */
87 MV_IRQ_COAL_REG_BASE = 0x18000, /* 6xxx part only */
88 MV_IRQ_COAL_CAUSE = (MV_IRQ_COAL_REG_BASE + 0x08),
89 MV_IRQ_COAL_CAUSE_LO = (MV_IRQ_COAL_REG_BASE + 0x88),
90 MV_IRQ_COAL_CAUSE_HI = (MV_IRQ_COAL_REG_BASE + 0x8c),
91 MV_IRQ_COAL_THRESHOLD = (MV_IRQ_COAL_REG_BASE + 0xcc),
92 MV_IRQ_COAL_TIME_THRESHOLD = (MV_IRQ_COAL_REG_BASE + 0xd0),
94 MV_SATAHC0_REG_BASE = 0x20000,
95 MV_FLASH_CTL_OFS = 0x1046c,
96 MV_GPIO_PORT_CTL_OFS = 0x104f0,
97 MV_RESET_CFG_OFS = 0x180d8,
99 MV_PCI_REG_SZ = MV_MAJOR_REG_AREA_SZ,
100 MV_SATAHC_REG_SZ = MV_MAJOR_REG_AREA_SZ,
101 MV_SATAHC_ARBTR_REG_SZ = MV_MINOR_REG_AREA_SZ, /* arbiter */
102 MV_PORT_REG_SZ = MV_MINOR_REG_AREA_SZ,
105 MV_MAX_Q_DEPTH_MASK = MV_MAX_Q_DEPTH - 1,
107 /* CRQB needs alignment on a 1KB boundary. Size == 1KB
108 * CRPB needs alignment on a 256B boundary. Size == 256B
109 * ePRD (SG) entries need alignment on a 16B boundary. Size == 16B
111 MV_CRQB_Q_SZ = (32 * MV_MAX_Q_DEPTH),
112 MV_CRPB_Q_SZ = (8 * MV_MAX_Q_DEPTH),
114 MV_SG_TBL_SZ = (16 * MV_MAX_SG_CT),
116 /* Determine hc from 0-7 port: hc = port >> MV_PORT_HC_SHIFT */
117 MV_PORT_HC_SHIFT = 2,
118 MV_PORTS_PER_HC = (1 << MV_PORT_HC_SHIFT), /* 4 */
119 /* Determine hc port from 0-7 port: hardport = port & MV_PORT_MASK */
120 MV_PORT_MASK = (MV_PORTS_PER_HC - 1), /* 3 */
123 MV_FLAG_DUAL_HC = (1 << 30), /* two SATA Host Controllers */
124 MV_FLAG_IRQ_COALESCE = (1 << 29), /* IRQ coalescing capability */
126 MV_COMMON_FLAGS = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
127 ATA_FLAG_MMIO | ATA_FLAG_NO_ATAPI |
128 ATA_FLAG_PIO_POLLING,
130 MV_6XXX_FLAGS = MV_FLAG_IRQ_COALESCE,
132 MV_GENIIE_FLAGS = MV_COMMON_FLAGS | MV_6XXX_FLAGS |
133 ATA_FLAG_PMP | ATA_FLAG_ACPI_SATA |
134 ATA_FLAG_NCQ | ATA_FLAG_AN,
136 CRQB_FLAG_READ = (1 << 0),
138 CRQB_IOID_SHIFT = 6, /* CRQB Gen-II/IIE IO Id shift */
139 CRQB_PMP_SHIFT = 12, /* CRQB Gen-II/IIE PMP shift */
140 CRQB_HOSTQ_SHIFT = 17, /* CRQB Gen-II/IIE HostQueTag shift */
141 CRQB_CMD_ADDR_SHIFT = 8,
142 CRQB_CMD_CS = (0x2 << 11),
143 CRQB_CMD_LAST = (1 << 15),
145 CRPB_FLAG_STATUS_SHIFT = 8,
146 CRPB_IOID_SHIFT_6 = 5, /* CRPB Gen-II IO Id shift */
147 CRPB_IOID_SHIFT_7 = 7, /* CRPB Gen-IIE IO Id shift */
149 EPRD_FLAG_END_OF_TBL = (1 << 31),
151 /* PCI interface registers */
153 PCI_COMMAND_OFS = 0xc00,
154 PCI_COMMAND_MRDTRIG = (1 << 7), /* PCI Master Read Trigger */
156 PCI_MAIN_CMD_STS_OFS = 0xd30,
157 STOP_PCI_MASTER = (1 << 2),
158 PCI_MASTER_EMPTY = (1 << 3),
159 GLOB_SFT_RST = (1 << 4),
161 MV_PCI_MODE_OFS = 0xd00,
162 MV_PCI_MODE_MASK = 0x30,
164 MV_PCI_EXP_ROM_BAR_CTL = 0xd2c,
165 MV_PCI_DISC_TIMER = 0xd04,
166 MV_PCI_MSI_TRIGGER = 0xc38,
167 MV_PCI_SERR_MASK = 0xc28,
168 MV_PCI_XBAR_TMOUT_OFS = 0x1d04,
169 MV_PCI_ERR_LOW_ADDRESS = 0x1d40,
170 MV_PCI_ERR_HIGH_ADDRESS = 0x1d44,
171 MV_PCI_ERR_ATTRIBUTE = 0x1d48,
172 MV_PCI_ERR_COMMAND = 0x1d50,
174 PCI_IRQ_CAUSE_OFS = 0x1d58,
175 PCI_IRQ_MASK_OFS = 0x1d5c,
176 PCI_UNMASK_ALL_IRQS = 0x7fffff, /* bits 22-0 */
178 PCIE_IRQ_CAUSE_OFS = 0x1900,
179 PCIE_IRQ_MASK_OFS = 0x1910,
180 PCIE_UNMASK_ALL_IRQS = 0x40a, /* assorted bits */
182 /* Host Controller Main Interrupt Cause/Mask registers (1 per-chip) */
183 PCI_HC_MAIN_IRQ_CAUSE_OFS = 0x1d60,
184 PCI_HC_MAIN_IRQ_MASK_OFS = 0x1d64,
185 SOC_HC_MAIN_IRQ_CAUSE_OFS = 0x20020,
186 SOC_HC_MAIN_IRQ_MASK_OFS = 0x20024,
187 ERR_IRQ = (1 << 0), /* shift by port # */
188 DONE_IRQ = (1 << 1), /* shift by port # */
189 HC0_IRQ_PEND = 0x1ff, /* bits 0-8 = HC0's ports */
190 HC_SHIFT = 9, /* bits 9-17 = HC1's ports */
192 TRAN_LO_DONE = (1 << 19), /* 6xxx: IRQ coalescing */
193 TRAN_HI_DONE = (1 << 20), /* 6xxx: IRQ coalescing */
194 PORTS_0_3_COAL_DONE = (1 << 8),
195 PORTS_4_7_COAL_DONE = (1 << 17),
196 PORTS_0_7_COAL_DONE = (1 << 21), /* 6xxx: IRQ coalescing */
197 GPIO_INT = (1 << 22),
198 SELF_INT = (1 << 23),
199 TWSI_INT = (1 << 24),
200 HC_MAIN_RSVD = (0x7f << 25), /* bits 31-25 */
201 HC_MAIN_RSVD_5 = (0x1fff << 19), /* bits 31-19 */
202 HC_MAIN_RSVD_SOC = (0x3fffffb << 6), /* bits 31-9, 7-6 */
204 /* SATAHC registers */
207 HC_IRQ_CAUSE_OFS = 0x14,
208 DMA_IRQ = (1 << 0), /* shift by port # */
209 HC_COAL_IRQ = (1 << 4), /* IRQ coalescing */
210 DEV_IRQ = (1 << 8), /* shift by port # */
212 /* Shadow block registers */
214 SHD_CTL_AST_OFS = 0x20, /* ofs from SHD_BLK_OFS */
217 SATA_STATUS_OFS = 0x300, /* ctrl, err regs follow status */
218 SATA_ACTIVE_OFS = 0x350,
219 SATA_FIS_IRQ_CAUSE_OFS = 0x364,
220 SATA_FIS_IRQ_AN = (1 << 9), /* async notification */
223 LTMODE_BIT8 = (1 << 8), /* unknown, but necessary */
227 PHY_MODE4_CFG_MASK = 0x00000003, /* phy internal config field */
228 PHY_MODE4_CFG_VALUE = 0x00000001, /* phy internal config field */
229 PHY_MODE4_RSVD_ZEROS = 0x5de3fffa, /* Gen2e always write zeros */
230 PHY_MODE4_RSVD_ONES = 0x00000005, /* Gen2e always write ones */
233 SATA_IFCTL_OFS = 0x344,
234 SATA_TESTCTL_OFS = 0x348,
235 SATA_IFSTAT_OFS = 0x34c,
236 VENDOR_UNIQUE_FIS_OFS = 0x35c,
239 FISCFG_WAIT_DEV_ERR = (1 << 8), /* wait for host on DevErr */
240 FISCFG_SINGLE_SYNC = (1 << 16), /* SYNC on DMA activation */
243 MV5_LTMODE_OFS = 0x30,
244 MV5_PHY_CTL_OFS = 0x0C,
245 SATA_INTERFACE_CFG_OFS = 0x050,
247 MV_M2_PREAMP_MASK = 0x7e0,
251 EDMA_CFG_Q_DEPTH = 0x1f, /* max device queue depth */
252 EDMA_CFG_NCQ = (1 << 5), /* for R/W FPDMA queued */
253 EDMA_CFG_NCQ_GO_ON_ERR = (1 << 14), /* continue on error */
254 EDMA_CFG_RD_BRST_EXT = (1 << 11), /* read burst 512B */
255 EDMA_CFG_WR_BUFF_LEN = (1 << 13), /* write buffer 512B */
256 EDMA_CFG_EDMA_FBS = (1 << 16), /* EDMA FIS-Based Switching */
257 EDMA_CFG_FBS = (1 << 26), /* FIS-Based Switching */
259 EDMA_ERR_IRQ_CAUSE_OFS = 0x8,
260 EDMA_ERR_IRQ_MASK_OFS = 0xc,
261 EDMA_ERR_D_PAR = (1 << 0), /* UDMA data parity err */
262 EDMA_ERR_PRD_PAR = (1 << 1), /* UDMA PRD parity err */
263 EDMA_ERR_DEV = (1 << 2), /* device error */
264 EDMA_ERR_DEV_DCON = (1 << 3), /* device disconnect */
265 EDMA_ERR_DEV_CON = (1 << 4), /* device connected */
266 EDMA_ERR_SERR = (1 << 5), /* SError bits [WBDST] raised */
267 EDMA_ERR_SELF_DIS = (1 << 7), /* Gen II/IIE self-disable */
268 EDMA_ERR_SELF_DIS_5 = (1 << 8), /* Gen I self-disable */
269 EDMA_ERR_BIST_ASYNC = (1 << 8), /* BIST FIS or Async Notify */
270 EDMA_ERR_TRANS_IRQ_7 = (1 << 8), /* Gen IIE transprt layer irq */
271 EDMA_ERR_CRQB_PAR = (1 << 9), /* CRQB parity error */
272 EDMA_ERR_CRPB_PAR = (1 << 10), /* CRPB parity error */
273 EDMA_ERR_INTRL_PAR = (1 << 11), /* internal parity error */
274 EDMA_ERR_IORDY = (1 << 12), /* IORdy timeout */
276 EDMA_ERR_LNK_CTRL_RX = (0xf << 13), /* link ctrl rx error */
277 EDMA_ERR_LNK_CTRL_RX_0 = (1 << 13), /* transient: CRC err */
278 EDMA_ERR_LNK_CTRL_RX_1 = (1 << 14), /* transient: FIFO err */
279 EDMA_ERR_LNK_CTRL_RX_2 = (1 << 15), /* fatal: caught SYNC */
280 EDMA_ERR_LNK_CTRL_RX_3 = (1 << 16), /* transient: FIS rx err */
282 EDMA_ERR_LNK_DATA_RX = (0xf << 17), /* link data rx error */
284 EDMA_ERR_LNK_CTRL_TX = (0x1f << 21), /* link ctrl tx error */
285 EDMA_ERR_LNK_CTRL_TX_0 = (1 << 21), /* transient: CRC err */
286 EDMA_ERR_LNK_CTRL_TX_1 = (1 << 22), /* transient: FIFO err */
287 EDMA_ERR_LNK_CTRL_TX_2 = (1 << 23), /* transient: caught SYNC */
288 EDMA_ERR_LNK_CTRL_TX_3 = (1 << 24), /* transient: caught DMAT */
289 EDMA_ERR_LNK_CTRL_TX_4 = (1 << 25), /* transient: FIS collision */
291 EDMA_ERR_LNK_DATA_TX = (0x1f << 26), /* link data tx error */
293 EDMA_ERR_TRANS_PROTO = (1 << 31), /* transport protocol error */
294 EDMA_ERR_OVERRUN_5 = (1 << 5),
295 EDMA_ERR_UNDERRUN_5 = (1 << 6),
297 EDMA_ERR_IRQ_TRANSIENT = EDMA_ERR_LNK_CTRL_RX_0 |
298 EDMA_ERR_LNK_CTRL_RX_1 |
299 EDMA_ERR_LNK_CTRL_RX_3 |
300 EDMA_ERR_LNK_CTRL_TX,
302 EDMA_EH_FREEZE = EDMA_ERR_D_PAR |
312 EDMA_ERR_LNK_CTRL_RX_2 |
313 EDMA_ERR_LNK_DATA_RX |
314 EDMA_ERR_LNK_DATA_TX |
315 EDMA_ERR_TRANS_PROTO,
317 EDMA_EH_FREEZE_5 = EDMA_ERR_D_PAR |
322 EDMA_ERR_UNDERRUN_5 |
323 EDMA_ERR_SELF_DIS_5 |
329 EDMA_REQ_Q_BASE_HI_OFS = 0x10,
330 EDMA_REQ_Q_IN_PTR_OFS = 0x14, /* also contains BASE_LO */
332 EDMA_REQ_Q_OUT_PTR_OFS = 0x18,
333 EDMA_REQ_Q_PTR_SHIFT = 5,
335 EDMA_RSP_Q_BASE_HI_OFS = 0x1c,
336 EDMA_RSP_Q_IN_PTR_OFS = 0x20,
337 EDMA_RSP_Q_OUT_PTR_OFS = 0x24, /* also contains BASE_LO */
338 EDMA_RSP_Q_PTR_SHIFT = 3,
340 EDMA_CMD_OFS = 0x28, /* EDMA command register */
341 EDMA_EN = (1 << 0), /* enable EDMA */
342 EDMA_DS = (1 << 1), /* disable EDMA; self-negated */
343 EDMA_RESET = (1 << 2), /* reset eng/trans/link/phy */
345 EDMA_STATUS_OFS = 0x30, /* EDMA engine status */
346 EDMA_STATUS_CACHE_EMPTY = (1 << 6), /* GenIIe command cache empty */
347 EDMA_STATUS_IDLE = (1 << 7), /* GenIIe EDMA enabled/idle */
349 EDMA_IORDY_TMOUT_OFS = 0x34,
350 EDMA_ARB_CFG_OFS = 0x38,
352 EDMA_HALTCOND_OFS = 0x60, /* GenIIe halt conditions */
354 GEN_II_NCQ_MAX_SECTORS = 256, /* max sects/io on Gen2 w/NCQ */
356 /* Host private flags (hp_flags) */
357 MV_HP_FLAG_MSI = (1 << 0),
358 MV_HP_ERRATA_50XXB0 = (1 << 1),
359 MV_HP_ERRATA_50XXB2 = (1 << 2),
360 MV_HP_ERRATA_60X1B2 = (1 << 3),
361 MV_HP_ERRATA_60X1C0 = (1 << 4),
362 MV_HP_GEN_I = (1 << 6), /* Generation I: 50xx */
363 MV_HP_GEN_II = (1 << 7), /* Generation II: 60xx */
364 MV_HP_GEN_IIE = (1 << 8), /* Generation IIE: 6042/7042 */
365 MV_HP_PCIE = (1 << 9), /* PCIe bus/regs: 7042 */
366 MV_HP_CUT_THROUGH = (1 << 10), /* can use EDMA cut-through */
367 MV_HP_FLAG_SOC = (1 << 11), /* SystemOnChip, no PCI */
369 /* Port private flags (pp_flags) */
370 MV_PP_FLAG_EDMA_EN = (1 << 0), /* is EDMA engine enabled? */
371 MV_PP_FLAG_NCQ_EN = (1 << 1), /* is EDMA set up for NCQ? */
372 MV_PP_FLAG_FBS_EN = (1 << 2), /* is EDMA set up for FBS? */
373 MV_PP_FLAG_DELAYED_EH = (1 << 3), /* delayed dev err handling */
376 #define IS_GEN_I(hpriv) ((hpriv)->hp_flags & MV_HP_GEN_I)
377 #define IS_GEN_II(hpriv) ((hpriv)->hp_flags & MV_HP_GEN_II)
378 #define IS_GEN_IIE(hpriv) ((hpriv)->hp_flags & MV_HP_GEN_IIE)
379 #define IS_PCIE(hpriv) ((hpriv)->hp_flags & MV_HP_PCIE)
380 #define IS_SOC(hpriv) ((hpriv)->hp_flags & MV_HP_FLAG_SOC)
382 #define WINDOW_CTRL(i) (0x20030 + ((i) << 4))
383 #define WINDOW_BASE(i) (0x20034 + ((i) << 4))
386 /* DMA boundary 0xffff is required by the s/g splitting
387 * we need on /length/ in mv_fill-sg().
389 MV_DMA_BOUNDARY = 0xffffU,
391 /* mask of register bits containing lower 32 bits
392 * of EDMA request queue DMA address
394 EDMA_REQ_Q_BASE_LO_MASK = 0xfffffc00U,
396 /* ditto, for response queue */
397 EDMA_RSP_Q_BASE_LO_MASK = 0xffffff00U,
411 /* Command ReQuest Block: 32B */
427 /* Command ResPonse Block: 8B */
434 /* EDMA Physical Region Descriptor (ePRD); A.K.A. SG */
442 struct mv_port_priv {
443 struct mv_crqb *crqb;
445 struct mv_crpb *crpb;
447 struct mv_sg *sg_tbl[MV_MAX_Q_DEPTH];
448 dma_addr_t sg_tbl_dma[MV_MAX_Q_DEPTH];
450 unsigned int req_idx;
451 unsigned int resp_idx;
454 unsigned int delayed_eh_pmp_map;
457 struct mv_port_signal {
462 struct mv_host_priv {
465 struct mv_port_signal signal[8];
466 const struct mv_hw_ops *ops;
469 void __iomem *main_irq_cause_addr;
470 void __iomem *main_irq_mask_addr;
475 * These consistent DMA memory pools give us guaranteed
476 * alignment for hardware-accessed data structures,
477 * and less memory waste in accomplishing the alignment.
479 struct dma_pool *crqb_pool;
480 struct dma_pool *crpb_pool;
481 struct dma_pool *sg_tbl_pool;
485 void (*phy_errata)(struct mv_host_priv *hpriv, void __iomem *mmio,
487 void (*enable_leds)(struct mv_host_priv *hpriv, void __iomem *mmio);
488 void (*read_preamp)(struct mv_host_priv *hpriv, int idx,
490 int (*reset_hc)(struct mv_host_priv *hpriv, void __iomem *mmio,
492 void (*reset_flash)(struct mv_host_priv *hpriv, void __iomem *mmio);
493 void (*reset_bus)(struct ata_host *host, void __iomem *mmio);
496 static int mv_scr_read(struct ata_port *ap, unsigned int sc_reg_in, u32 *val);
497 static int mv_scr_write(struct ata_port *ap, unsigned int sc_reg_in, u32 val);
498 static int mv5_scr_read(struct ata_port *ap, unsigned int sc_reg_in, u32 *val);
499 static int mv5_scr_write(struct ata_port *ap, unsigned int sc_reg_in, u32 val);
500 static int mv_port_start(struct ata_port *ap);
501 static void mv_port_stop(struct ata_port *ap);
502 static int mv_qc_defer(struct ata_queued_cmd *qc);
503 static void mv_qc_prep(struct ata_queued_cmd *qc);
504 static void mv_qc_prep_iie(struct ata_queued_cmd *qc);
505 static unsigned int mv_qc_issue(struct ata_queued_cmd *qc);
506 static int mv_hardreset(struct ata_link *link, unsigned int *class,
507 unsigned long deadline);
508 static void mv_eh_freeze(struct ata_port *ap);
509 static void mv_eh_thaw(struct ata_port *ap);
510 static void mv6_dev_config(struct ata_device *dev);
512 static void mv5_phy_errata(struct mv_host_priv *hpriv, void __iomem *mmio,
514 static void mv5_enable_leds(struct mv_host_priv *hpriv, void __iomem *mmio);
515 static void mv5_read_preamp(struct mv_host_priv *hpriv, int idx,
517 static int mv5_reset_hc(struct mv_host_priv *hpriv, void __iomem *mmio,
519 static void mv5_reset_flash(struct mv_host_priv *hpriv, void __iomem *mmio);
520 static void mv5_reset_bus(struct ata_host *host, void __iomem *mmio);
522 static void mv6_phy_errata(struct mv_host_priv *hpriv, void __iomem *mmio,
524 static void mv6_enable_leds(struct mv_host_priv *hpriv, void __iomem *mmio);
525 static void mv6_read_preamp(struct mv_host_priv *hpriv, int idx,
527 static int mv6_reset_hc(struct mv_host_priv *hpriv, void __iomem *mmio,
529 static void mv6_reset_flash(struct mv_host_priv *hpriv, void __iomem *mmio);
530 static void mv_soc_enable_leds(struct mv_host_priv *hpriv,
532 static void mv_soc_read_preamp(struct mv_host_priv *hpriv, int idx,
534 static int mv_soc_reset_hc(struct mv_host_priv *hpriv,
535 void __iomem *mmio, unsigned int n_hc);
536 static void mv_soc_reset_flash(struct mv_host_priv *hpriv,
538 static void mv_soc_reset_bus(struct ata_host *host, void __iomem *mmio);
539 static void mv_reset_pci_bus(struct ata_host *host, void __iomem *mmio);
540 static void mv_reset_channel(struct mv_host_priv *hpriv, void __iomem *mmio,
541 unsigned int port_no);
542 static int mv_stop_edma(struct ata_port *ap);
543 static int mv_stop_edma_engine(void __iomem *port_mmio);
544 static void mv_edma_cfg(struct ata_port *ap, int want_ncq);
546 static void mv_pmp_select(struct ata_port *ap, int pmp);
547 static int mv_pmp_hardreset(struct ata_link *link, unsigned int *class,
548 unsigned long deadline);
549 static int mv_softreset(struct ata_link *link, unsigned int *class,
550 unsigned long deadline);
551 static void mv_pmp_error_handler(struct ata_port *ap);
552 static void mv_process_crpb_entries(struct ata_port *ap,
553 struct mv_port_priv *pp);
555 /* .sg_tablesize is (MV_MAX_SG_CT / 2) in the structures below
556 * because we have to allow room for worst case splitting of
557 * PRDs for 64K boundaries in mv_fill_sg().
559 static struct scsi_host_template mv5_sht = {
560 ATA_BASE_SHT(DRV_NAME),
561 .sg_tablesize = MV_MAX_SG_CT / 2,
562 .dma_boundary = MV_DMA_BOUNDARY,
565 static struct scsi_host_template mv6_sht = {
566 ATA_NCQ_SHT(DRV_NAME),
567 .can_queue = MV_MAX_Q_DEPTH - 1,
568 .sg_tablesize = MV_MAX_SG_CT / 2,
569 .dma_boundary = MV_DMA_BOUNDARY,
572 static struct ata_port_operations mv5_ops = {
573 .inherits = &ata_sff_port_ops,
575 .qc_defer = mv_qc_defer,
576 .qc_prep = mv_qc_prep,
577 .qc_issue = mv_qc_issue,
579 .freeze = mv_eh_freeze,
581 .hardreset = mv_hardreset,
582 .error_handler = ata_std_error_handler, /* avoid SFF EH */
583 .post_internal_cmd = ATA_OP_NULL,
585 .scr_read = mv5_scr_read,
586 .scr_write = mv5_scr_write,
588 .port_start = mv_port_start,
589 .port_stop = mv_port_stop,
592 static struct ata_port_operations mv6_ops = {
593 .inherits = &mv5_ops,
594 .dev_config = mv6_dev_config,
595 .scr_read = mv_scr_read,
596 .scr_write = mv_scr_write,
598 .pmp_hardreset = mv_pmp_hardreset,
599 .pmp_softreset = mv_softreset,
600 .softreset = mv_softreset,
601 .error_handler = mv_pmp_error_handler,
604 static struct ata_port_operations mv_iie_ops = {
605 .inherits = &mv6_ops,
606 .dev_config = ATA_OP_NULL,
607 .qc_prep = mv_qc_prep_iie,
610 static const struct ata_port_info mv_port_info[] = {
612 .flags = MV_COMMON_FLAGS,
613 .pio_mask = 0x1f, /* pio0-4 */
614 .udma_mask = ATA_UDMA6,
615 .port_ops = &mv5_ops,
618 .flags = MV_COMMON_FLAGS | MV_FLAG_DUAL_HC,
619 .pio_mask = 0x1f, /* pio0-4 */
620 .udma_mask = ATA_UDMA6,
621 .port_ops = &mv5_ops,
624 .flags = MV_COMMON_FLAGS | MV_FLAG_DUAL_HC,
625 .pio_mask = 0x1f, /* pio0-4 */
626 .udma_mask = ATA_UDMA6,
627 .port_ops = &mv5_ops,
630 .flags = MV_COMMON_FLAGS | MV_6XXX_FLAGS |
631 ATA_FLAG_PMP | ATA_FLAG_ACPI_SATA |
633 .pio_mask = 0x1f, /* pio0-4 */
634 .udma_mask = ATA_UDMA6,
635 .port_ops = &mv6_ops,
638 .flags = MV_COMMON_FLAGS | MV_6XXX_FLAGS |
639 ATA_FLAG_PMP | ATA_FLAG_ACPI_SATA |
640 ATA_FLAG_NCQ | MV_FLAG_DUAL_HC,
641 .pio_mask = 0x1f, /* pio0-4 */
642 .udma_mask = ATA_UDMA6,
643 .port_ops = &mv6_ops,
646 .flags = MV_GENIIE_FLAGS,
647 .pio_mask = 0x1f, /* pio0-4 */
648 .udma_mask = ATA_UDMA6,
649 .port_ops = &mv_iie_ops,
652 .flags = MV_GENIIE_FLAGS,
653 .pio_mask = 0x1f, /* pio0-4 */
654 .udma_mask = ATA_UDMA6,
655 .port_ops = &mv_iie_ops,
658 .flags = MV_GENIIE_FLAGS,
659 .pio_mask = 0x1f, /* pio0-4 */
660 .udma_mask = ATA_UDMA6,
661 .port_ops = &mv_iie_ops,
665 static const struct pci_device_id mv_pci_tbl[] = {
666 { PCI_VDEVICE(MARVELL, 0x5040), chip_504x },
667 { PCI_VDEVICE(MARVELL, 0x5041), chip_504x },
668 { PCI_VDEVICE(MARVELL, 0x5080), chip_5080 },
669 { PCI_VDEVICE(MARVELL, 0x5081), chip_508x },
670 /* RocketRAID 1740/174x have different identifiers */
671 { PCI_VDEVICE(TTI, 0x1740), chip_508x },
672 { PCI_VDEVICE(TTI, 0x1742), chip_508x },
674 { PCI_VDEVICE(MARVELL, 0x6040), chip_604x },
675 { PCI_VDEVICE(MARVELL, 0x6041), chip_604x },
676 { PCI_VDEVICE(MARVELL, 0x6042), chip_6042 },
677 { PCI_VDEVICE(MARVELL, 0x6080), chip_608x },
678 { PCI_VDEVICE(MARVELL, 0x6081), chip_608x },
680 { PCI_VDEVICE(ADAPTEC2, 0x0241), chip_604x },
683 { PCI_VDEVICE(ADAPTEC2, 0x0243), chip_7042 },
685 /* Marvell 7042 support */
686 { PCI_VDEVICE(MARVELL, 0x7042), chip_7042 },
688 /* Highpoint RocketRAID PCIe series */
689 { PCI_VDEVICE(TTI, 0x2300), chip_7042 },
690 { PCI_VDEVICE(TTI, 0x2310), chip_7042 },
692 { } /* terminate list */
695 static const struct mv_hw_ops mv5xxx_ops = {
696 .phy_errata = mv5_phy_errata,
697 .enable_leds = mv5_enable_leds,
698 .read_preamp = mv5_read_preamp,
699 .reset_hc = mv5_reset_hc,
700 .reset_flash = mv5_reset_flash,
701 .reset_bus = mv5_reset_bus,
704 static const struct mv_hw_ops mv6xxx_ops = {
705 .phy_errata = mv6_phy_errata,
706 .enable_leds = mv6_enable_leds,
707 .read_preamp = mv6_read_preamp,
708 .reset_hc = mv6_reset_hc,
709 .reset_flash = mv6_reset_flash,
710 .reset_bus = mv_reset_pci_bus,
713 static const struct mv_hw_ops mv_soc_ops = {
714 .phy_errata = mv6_phy_errata,
715 .enable_leds = mv_soc_enable_leds,
716 .read_preamp = mv_soc_read_preamp,
717 .reset_hc = mv_soc_reset_hc,
718 .reset_flash = mv_soc_reset_flash,
719 .reset_bus = mv_soc_reset_bus,
726 static inline void writelfl(unsigned long data, void __iomem *addr)
729 (void) readl(addr); /* flush to avoid PCI posted write */
732 static inline unsigned int mv_hc_from_port(unsigned int port)
734 return port >> MV_PORT_HC_SHIFT;
737 static inline unsigned int mv_hardport_from_port(unsigned int port)
739 return port & MV_PORT_MASK;
743 * Consolidate some rather tricky bit shift calculations.
744 * This is hot-path stuff, so not a function.
745 * Simple code, with two return values, so macro rather than inline.
747 * port is the sole input, in range 0..7.
748 * shift is one output, for use with main_irq_cause / main_irq_mask registers.
749 * hardport is the other output, in range 0..3.
751 * Note that port and hardport may be the same variable in some cases.
753 #define MV_PORT_TO_SHIFT_AND_HARDPORT(port, shift, hardport) \
755 shift = mv_hc_from_port(port) * HC_SHIFT; \
756 hardport = mv_hardport_from_port(port); \
757 shift += hardport * 2; \
760 static inline void __iomem *mv_hc_base(void __iomem *base, unsigned int hc)
762 return (base + MV_SATAHC0_REG_BASE + (hc * MV_SATAHC_REG_SZ));
765 static inline void __iomem *mv_hc_base_from_port(void __iomem *base,
768 return mv_hc_base(base, mv_hc_from_port(port));
771 static inline void __iomem *mv_port_base(void __iomem *base, unsigned int port)
773 return mv_hc_base_from_port(base, port) +
774 MV_SATAHC_ARBTR_REG_SZ +
775 (mv_hardport_from_port(port) * MV_PORT_REG_SZ);
778 static void __iomem *mv5_phy_base(void __iomem *mmio, unsigned int port)
780 void __iomem *hc_mmio = mv_hc_base_from_port(mmio, port);
781 unsigned long ofs = (mv_hardport_from_port(port) + 1) * 0x100UL;
783 return hc_mmio + ofs;
786 static inline void __iomem *mv_host_base(struct ata_host *host)
788 struct mv_host_priv *hpriv = host->private_data;
792 static inline void __iomem *mv_ap_base(struct ata_port *ap)
794 return mv_port_base(mv_host_base(ap->host), ap->port_no);
797 static inline int mv_get_hc_count(unsigned long port_flags)
799 return ((port_flags & MV_FLAG_DUAL_HC) ? 2 : 1);
802 static void mv_set_edma_ptrs(void __iomem *port_mmio,
803 struct mv_host_priv *hpriv,
804 struct mv_port_priv *pp)
809 * initialize request queue
811 pp->req_idx &= MV_MAX_Q_DEPTH_MASK; /* paranoia */
812 index = pp->req_idx << EDMA_REQ_Q_PTR_SHIFT;
814 WARN_ON(pp->crqb_dma & 0x3ff);
815 writel((pp->crqb_dma >> 16) >> 16, port_mmio + EDMA_REQ_Q_BASE_HI_OFS);
816 writelfl((pp->crqb_dma & EDMA_REQ_Q_BASE_LO_MASK) | index,
817 port_mmio + EDMA_REQ_Q_IN_PTR_OFS);
818 writelfl(index, port_mmio + EDMA_REQ_Q_OUT_PTR_OFS);
821 * initialize response queue
823 pp->resp_idx &= MV_MAX_Q_DEPTH_MASK; /* paranoia */
824 index = pp->resp_idx << EDMA_RSP_Q_PTR_SHIFT;
826 WARN_ON(pp->crpb_dma & 0xff);
827 writel((pp->crpb_dma >> 16) >> 16, port_mmio + EDMA_RSP_Q_BASE_HI_OFS);
828 writelfl(index, port_mmio + EDMA_RSP_Q_IN_PTR_OFS);
829 writelfl((pp->crpb_dma & EDMA_RSP_Q_BASE_LO_MASK) | index,
830 port_mmio + EDMA_RSP_Q_OUT_PTR_OFS);
833 static void mv_set_main_irq_mask(struct ata_host *host,
834 u32 disable_bits, u32 enable_bits)
836 struct mv_host_priv *hpriv = host->private_data;
837 u32 old_mask, new_mask;
839 old_mask = hpriv->main_irq_mask;
840 new_mask = (old_mask & ~disable_bits) | enable_bits;
841 if (new_mask != old_mask) {
842 hpriv->main_irq_mask = new_mask;
843 writelfl(new_mask, hpriv->main_irq_mask_addr);
847 static void mv_enable_port_irqs(struct ata_port *ap,
848 unsigned int port_bits)
850 unsigned int shift, hardport, port = ap->port_no;
851 u32 disable_bits, enable_bits;
853 MV_PORT_TO_SHIFT_AND_HARDPORT(port, shift, hardport);
855 disable_bits = (DONE_IRQ | ERR_IRQ) << shift;
856 enable_bits = port_bits << shift;
857 mv_set_main_irq_mask(ap->host, disable_bits, enable_bits);
861 * mv_start_dma - Enable eDMA engine
862 * @base: port base address
863 * @pp: port private data
865 * Verify the local cache of the eDMA state is accurate with a
869 * Inherited from caller.
871 static void mv_start_dma(struct ata_port *ap, void __iomem *port_mmio,
872 struct mv_port_priv *pp, u8 protocol)
874 int want_ncq = (protocol == ATA_PROT_NCQ);
876 if (pp->pp_flags & MV_PP_FLAG_EDMA_EN) {
877 int using_ncq = ((pp->pp_flags & MV_PP_FLAG_NCQ_EN) != 0);
878 if (want_ncq != using_ncq)
881 if (!(pp->pp_flags & MV_PP_FLAG_EDMA_EN)) {
882 struct mv_host_priv *hpriv = ap->host->private_data;
883 int hardport = mv_hardport_from_port(ap->port_no);
884 void __iomem *hc_mmio = mv_hc_base_from_port(
885 mv_host_base(ap->host), hardport);
886 u32 hc_irq_cause, ipending;
888 /* clear EDMA event indicators, if any */
889 writelfl(0, port_mmio + EDMA_ERR_IRQ_CAUSE_OFS);
891 /* clear EDMA interrupt indicator, if any */
892 hc_irq_cause = readl(hc_mmio + HC_IRQ_CAUSE_OFS);
893 ipending = (DEV_IRQ | DMA_IRQ) << hardport;
894 if (hc_irq_cause & ipending) {
895 writelfl(hc_irq_cause & ~ipending,
896 hc_mmio + HC_IRQ_CAUSE_OFS);
899 mv_edma_cfg(ap, want_ncq);
901 /* clear FIS IRQ Cause */
902 if (IS_GEN_IIE(hpriv))
903 writelfl(0, port_mmio + SATA_FIS_IRQ_CAUSE_OFS);
905 mv_set_edma_ptrs(port_mmio, hpriv, pp);
906 mv_enable_port_irqs(ap, DONE_IRQ|ERR_IRQ);
908 writelfl(EDMA_EN, port_mmio + EDMA_CMD_OFS);
909 pp->pp_flags |= MV_PP_FLAG_EDMA_EN;
913 static void mv_wait_for_edma_empty_idle(struct ata_port *ap)
915 void __iomem *port_mmio = mv_ap_base(ap);
916 const u32 empty_idle = (EDMA_STATUS_CACHE_EMPTY | EDMA_STATUS_IDLE);
917 const int per_loop = 5, timeout = (15 * 1000 / per_loop);
921 * Wait for the EDMA engine to finish transactions in progress.
922 * No idea what a good "timeout" value might be, but measurements
923 * indicate that it often requires hundreds of microseconds
924 * with two drives in-use. So we use the 15msec value above
925 * as a rough guess at what even more drives might require.
927 for (i = 0; i < timeout; ++i) {
928 u32 edma_stat = readl(port_mmio + EDMA_STATUS_OFS);
929 if ((edma_stat & empty_idle) == empty_idle)
933 /* ata_port_printk(ap, KERN_INFO, "%s: %u+ usecs\n", __func__, i); */
937 * mv_stop_edma_engine - Disable eDMA engine
938 * @port_mmio: io base address
941 * Inherited from caller.
943 static int mv_stop_edma_engine(void __iomem *port_mmio)
947 /* Disable eDMA. The disable bit auto clears. */
948 writelfl(EDMA_DS, port_mmio + EDMA_CMD_OFS);
950 /* Wait for the chip to confirm eDMA is off. */
951 for (i = 10000; i > 0; i--) {
952 u32 reg = readl(port_mmio + EDMA_CMD_OFS);
953 if (!(reg & EDMA_EN))
960 static int mv_stop_edma(struct ata_port *ap)
962 void __iomem *port_mmio = mv_ap_base(ap);
963 struct mv_port_priv *pp = ap->private_data;
965 if (!(pp->pp_flags & MV_PP_FLAG_EDMA_EN))
967 pp->pp_flags &= ~MV_PP_FLAG_EDMA_EN;
968 mv_wait_for_edma_empty_idle(ap);
969 if (mv_stop_edma_engine(port_mmio)) {
970 ata_port_printk(ap, KERN_ERR, "Unable to stop eDMA\n");
977 static void mv_dump_mem(void __iomem *start, unsigned bytes)
980 for (b = 0; b < bytes; ) {
981 DPRINTK("%p: ", start + b);
982 for (w = 0; b < bytes && w < 4; w++) {
983 printk("%08x ", readl(start + b));
991 static void mv_dump_pci_cfg(struct pci_dev *pdev, unsigned bytes)
996 for (b = 0; b < bytes; ) {
997 DPRINTK("%02x: ", b);
998 for (w = 0; b < bytes && w < 4; w++) {
999 (void) pci_read_config_dword(pdev, b, &dw);
1000 printk("%08x ", dw);
1007 static void mv_dump_all_regs(void __iomem *mmio_base, int port,
1008 struct pci_dev *pdev)
1011 void __iomem *hc_base = mv_hc_base(mmio_base,
1012 port >> MV_PORT_HC_SHIFT);
1013 void __iomem *port_base;
1014 int start_port, num_ports, p, start_hc, num_hcs, hc;
1017 start_hc = start_port = 0;
1018 num_ports = 8; /* shld be benign for 4 port devs */
1021 start_hc = port >> MV_PORT_HC_SHIFT;
1023 num_ports = num_hcs = 1;
1025 DPRINTK("All registers for port(s) %u-%u:\n", start_port,
1026 num_ports > 1 ? num_ports - 1 : start_port);
1029 DPRINTK("PCI config space regs:\n");
1030 mv_dump_pci_cfg(pdev, 0x68);
1032 DPRINTK("PCI regs:\n");
1033 mv_dump_mem(mmio_base+0xc00, 0x3c);
1034 mv_dump_mem(mmio_base+0xd00, 0x34);
1035 mv_dump_mem(mmio_base+0xf00, 0x4);
1036 mv_dump_mem(mmio_base+0x1d00, 0x6c);
1037 for (hc = start_hc; hc < start_hc + num_hcs; hc++) {
1038 hc_base = mv_hc_base(mmio_base, hc);
1039 DPRINTK("HC regs (HC %i):\n", hc);
1040 mv_dump_mem(hc_base, 0x1c);
1042 for (p = start_port; p < start_port + num_ports; p++) {
1043 port_base = mv_port_base(mmio_base, p);
1044 DPRINTK("EDMA regs (port %i):\n", p);
1045 mv_dump_mem(port_base, 0x54);
1046 DPRINTK("SATA regs (port %i):\n", p);
1047 mv_dump_mem(port_base+0x300, 0x60);
1052 static unsigned int mv_scr_offset(unsigned int sc_reg_in)
1056 switch (sc_reg_in) {
1060 ofs = SATA_STATUS_OFS + (sc_reg_in * sizeof(u32));
1063 ofs = SATA_ACTIVE_OFS; /* active is not with the others */
1072 static int mv_scr_read(struct ata_port *ap, unsigned int sc_reg_in, u32 *val)
1074 unsigned int ofs = mv_scr_offset(sc_reg_in);
1076 if (ofs != 0xffffffffU) {
1077 *val = readl(mv_ap_base(ap) + ofs);
1083 static int mv_scr_write(struct ata_port *ap, unsigned int sc_reg_in, u32 val)
1085 unsigned int ofs = mv_scr_offset(sc_reg_in);
1087 if (ofs != 0xffffffffU) {
1088 writelfl(val, mv_ap_base(ap) + ofs);
1094 static void mv6_dev_config(struct ata_device *adev)
1097 * Deal with Gen-II ("mv6") hardware quirks/restrictions:
1099 * Gen-II does not support NCQ over a port multiplier
1100 * (no FIS-based switching).
1102 * We don't have hob_nsect when doing NCQ commands on Gen-II.
1103 * See mv_qc_prep() for more info.
1105 if (adev->flags & ATA_DFLAG_NCQ) {
1106 if (sata_pmp_attached(adev->link->ap)) {
1107 adev->flags &= ~ATA_DFLAG_NCQ;
1108 ata_dev_printk(adev, KERN_INFO,
1109 "NCQ disabled for command-based switching\n");
1110 } else if (adev->max_sectors > GEN_II_NCQ_MAX_SECTORS) {
1111 adev->max_sectors = GEN_II_NCQ_MAX_SECTORS;
1112 ata_dev_printk(adev, KERN_INFO,
1113 "max_sectors limited to %u for NCQ\n",
1119 static int mv_qc_defer(struct ata_queued_cmd *qc)
1121 struct ata_link *link = qc->dev->link;
1122 struct ata_port *ap = link->ap;
1123 struct mv_port_priv *pp = ap->private_data;
1126 * Don't allow new commands if we're in a delayed EH state
1127 * for NCQ and/or FIS-based switching.
1129 if (pp->pp_flags & MV_PP_FLAG_DELAYED_EH)
1130 return ATA_DEFER_PORT;
1132 * If the port is completely idle, then allow the new qc.
1134 if (ap->nr_active_links == 0)
1137 if (pp->pp_flags & MV_PP_FLAG_EDMA_EN) {
1139 * The port is operating in host queuing mode (EDMA).
1140 * It can accomodate a new qc if the qc protocol
1141 * is compatible with the current host queue mode.
1143 if (pp->pp_flags & MV_PP_FLAG_NCQ_EN) {
1145 * The host queue (EDMA) is in NCQ mode.
1146 * If the new qc is also an NCQ command,
1147 * then allow the new qc.
1149 if (qc->tf.protocol == ATA_PROT_NCQ)
1153 * The host queue (EDMA) is in non-NCQ, DMA mode.
1154 * If the new qc is also a non-NCQ, DMA command,
1155 * then allow the new qc.
1157 if (qc->tf.protocol == ATA_PROT_DMA)
1161 return ATA_DEFER_PORT;
1164 static void mv_config_fbs(void __iomem *port_mmio, int want_ncq, int want_fbs)
1166 u32 new_fiscfg, old_fiscfg;
1167 u32 new_ltmode, old_ltmode;
1168 u32 new_haltcond, old_haltcond;
1170 old_fiscfg = readl(port_mmio + FISCFG_OFS);
1171 old_ltmode = readl(port_mmio + LTMODE_OFS);
1172 old_haltcond = readl(port_mmio + EDMA_HALTCOND_OFS);
1174 new_fiscfg = old_fiscfg & ~(FISCFG_SINGLE_SYNC | FISCFG_WAIT_DEV_ERR);
1175 new_ltmode = old_ltmode & ~LTMODE_BIT8;
1176 new_haltcond = old_haltcond | EDMA_ERR_DEV;
1179 new_fiscfg = old_fiscfg | FISCFG_SINGLE_SYNC;
1180 new_ltmode = old_ltmode | LTMODE_BIT8;
1182 new_haltcond &= ~EDMA_ERR_DEV;
1184 new_fiscfg |= FISCFG_WAIT_DEV_ERR;
1187 if (new_fiscfg != old_fiscfg)
1188 writelfl(new_fiscfg, port_mmio + FISCFG_OFS);
1189 if (new_ltmode != old_ltmode)
1190 writelfl(new_ltmode, port_mmio + LTMODE_OFS);
1191 if (new_haltcond != old_haltcond)
1192 writelfl(new_haltcond, port_mmio + EDMA_HALTCOND_OFS);
1195 static void mv_60x1_errata_sata25(struct ata_port *ap, int want_ncq)
1197 struct mv_host_priv *hpriv = ap->host->private_data;
1200 /* workaround for 88SX60x1 FEr SATA#25 (part 1) */
1201 old = readl(hpriv->base + MV_GPIO_PORT_CTL_OFS);
1203 new = old | (1 << 22);
1205 new = old & ~(1 << 22);
1207 writel(new, hpriv->base + MV_GPIO_PORT_CTL_OFS);
1210 static void mv_edma_cfg(struct ata_port *ap, int want_ncq)
1213 struct mv_port_priv *pp = ap->private_data;
1214 struct mv_host_priv *hpriv = ap->host->private_data;
1215 void __iomem *port_mmio = mv_ap_base(ap);
1217 /* set up non-NCQ EDMA configuration */
1218 cfg = EDMA_CFG_Q_DEPTH; /* always 0x1f for *all* chips */
1219 pp->pp_flags &= ~MV_PP_FLAG_FBS_EN;
1221 if (IS_GEN_I(hpriv))
1222 cfg |= (1 << 8); /* enab config burst size mask */
1224 else if (IS_GEN_II(hpriv)) {
1225 cfg |= EDMA_CFG_RD_BRST_EXT | EDMA_CFG_WR_BUFF_LEN;
1226 mv_60x1_errata_sata25(ap, want_ncq);
1228 } else if (IS_GEN_IIE(hpriv)) {
1229 int want_fbs = sata_pmp_attached(ap);
1231 * Possible future enhancement:
1233 * The chip can use FBS with non-NCQ, if we allow it,
1234 * But first we need to have the error handling in place
1235 * for this mode (datasheet section 7.3.15.4.2.3).
1236 * So disallow non-NCQ FBS for now.
1238 want_fbs &= want_ncq;
1240 mv_config_fbs(port_mmio, want_ncq, want_fbs);
1243 pp->pp_flags |= MV_PP_FLAG_FBS_EN;
1244 cfg |= EDMA_CFG_EDMA_FBS; /* FIS-based switching */
1247 cfg |= (1 << 23); /* do not mask PM field in rx'd FIS */
1248 cfg |= (1 << 22); /* enab 4-entry host queue cache */
1250 cfg |= (1 << 18); /* enab early completion */
1251 if (hpriv->hp_flags & MV_HP_CUT_THROUGH)
1252 cfg |= (1 << 17); /* enab cut-thru (dis stor&forwrd) */
1256 cfg |= EDMA_CFG_NCQ;
1257 pp->pp_flags |= MV_PP_FLAG_NCQ_EN;
1259 pp->pp_flags &= ~MV_PP_FLAG_NCQ_EN;
1261 writelfl(cfg, port_mmio + EDMA_CFG_OFS);
1264 static void mv_port_free_dma_mem(struct ata_port *ap)
1266 struct mv_host_priv *hpriv = ap->host->private_data;
1267 struct mv_port_priv *pp = ap->private_data;
1271 dma_pool_free(hpriv->crqb_pool, pp->crqb, pp->crqb_dma);
1275 dma_pool_free(hpriv->crpb_pool, pp->crpb, pp->crpb_dma);
1279 * For GEN_I, there's no NCQ, so we have only a single sg_tbl.
1280 * For later hardware, we have one unique sg_tbl per NCQ tag.
1282 for (tag = 0; tag < MV_MAX_Q_DEPTH; ++tag) {
1283 if (pp->sg_tbl[tag]) {
1284 if (tag == 0 || !IS_GEN_I(hpriv))
1285 dma_pool_free(hpriv->sg_tbl_pool,
1287 pp->sg_tbl_dma[tag]);
1288 pp->sg_tbl[tag] = NULL;
1294 * mv_port_start - Port specific init/start routine.
1295 * @ap: ATA channel to manipulate
1297 * Allocate and point to DMA memory, init port private memory,
1301 * Inherited from caller.
1303 static int mv_port_start(struct ata_port *ap)
1305 struct device *dev = ap->host->dev;
1306 struct mv_host_priv *hpriv = ap->host->private_data;
1307 struct mv_port_priv *pp;
1310 pp = devm_kzalloc(dev, sizeof(*pp), GFP_KERNEL);
1313 ap->private_data = pp;
1315 pp->crqb = dma_pool_alloc(hpriv->crqb_pool, GFP_KERNEL, &pp->crqb_dma);
1318 memset(pp->crqb, 0, MV_CRQB_Q_SZ);
1320 pp->crpb = dma_pool_alloc(hpriv->crpb_pool, GFP_KERNEL, &pp->crpb_dma);
1322 goto out_port_free_dma_mem;
1323 memset(pp->crpb, 0, MV_CRPB_Q_SZ);
1325 /* 6041/6081 Rev. "C0" (and newer) are okay with async notify */
1326 if (hpriv->hp_flags & MV_HP_ERRATA_60X1C0)
1327 ap->flags |= ATA_FLAG_AN;
1329 * For GEN_I, there's no NCQ, so we only allocate a single sg_tbl.
1330 * For later hardware, we need one unique sg_tbl per NCQ tag.
1332 for (tag = 0; tag < MV_MAX_Q_DEPTH; ++tag) {
1333 if (tag == 0 || !IS_GEN_I(hpriv)) {
1334 pp->sg_tbl[tag] = dma_pool_alloc(hpriv->sg_tbl_pool,
1335 GFP_KERNEL, &pp->sg_tbl_dma[tag]);
1336 if (!pp->sg_tbl[tag])
1337 goto out_port_free_dma_mem;
1339 pp->sg_tbl[tag] = pp->sg_tbl[0];
1340 pp->sg_tbl_dma[tag] = pp->sg_tbl_dma[0];
1345 out_port_free_dma_mem:
1346 mv_port_free_dma_mem(ap);
1351 * mv_port_stop - Port specific cleanup/stop routine.
1352 * @ap: ATA channel to manipulate
1354 * Stop DMA, cleanup port memory.
1357 * This routine uses the host lock to protect the DMA stop.
1359 static void mv_port_stop(struct ata_port *ap)
1362 mv_enable_port_irqs(ap, 0);
1363 mv_port_free_dma_mem(ap);
1367 * mv_fill_sg - Fill out the Marvell ePRD (scatter gather) entries
1368 * @qc: queued command whose SG list to source from
1370 * Populate the SG list and mark the last entry.
1373 * Inherited from caller.
1375 static void mv_fill_sg(struct ata_queued_cmd *qc)
1377 struct mv_port_priv *pp = qc->ap->private_data;
1378 struct scatterlist *sg;
1379 struct mv_sg *mv_sg, *last_sg = NULL;
1382 mv_sg = pp->sg_tbl[qc->tag];
1383 for_each_sg(qc->sg, sg, qc->n_elem, si) {
1384 dma_addr_t addr = sg_dma_address(sg);
1385 u32 sg_len = sg_dma_len(sg);
1388 u32 offset = addr & 0xffff;
1391 if ((offset + sg_len > 0x10000))
1392 len = 0x10000 - offset;
1394 mv_sg->addr = cpu_to_le32(addr & 0xffffffff);
1395 mv_sg->addr_hi = cpu_to_le32((addr >> 16) >> 16);
1396 mv_sg->flags_size = cpu_to_le32(len & 0xffff);
1406 if (likely(last_sg))
1407 last_sg->flags_size |= cpu_to_le32(EPRD_FLAG_END_OF_TBL);
1410 static void mv_crqb_pack_cmd(__le16 *cmdw, u8 data, u8 addr, unsigned last)
1412 u16 tmp = data | (addr << CRQB_CMD_ADDR_SHIFT) | CRQB_CMD_CS |
1413 (last ? CRQB_CMD_LAST : 0);
1414 *cmdw = cpu_to_le16(tmp);
1418 * mv_qc_prep - Host specific command preparation.
1419 * @qc: queued command to prepare
1421 * This routine simply redirects to the general purpose routine
1422 * if command is not DMA. Else, it handles prep of the CRQB
1423 * (command request block), does some sanity checking, and calls
1424 * the SG load routine.
1427 * Inherited from caller.
1429 static void mv_qc_prep(struct ata_queued_cmd *qc)
1431 struct ata_port *ap = qc->ap;
1432 struct mv_port_priv *pp = ap->private_data;
1434 struct ata_taskfile *tf;
1438 if ((qc->tf.protocol != ATA_PROT_DMA) &&
1439 (qc->tf.protocol != ATA_PROT_NCQ))
1442 /* Fill in command request block
1444 if (!(qc->tf.flags & ATA_TFLAG_WRITE))
1445 flags |= CRQB_FLAG_READ;
1446 WARN_ON(MV_MAX_Q_DEPTH <= qc->tag);
1447 flags |= qc->tag << CRQB_TAG_SHIFT;
1448 flags |= (qc->dev->link->pmp & 0xf) << CRQB_PMP_SHIFT;
1450 /* get current queue index from software */
1451 in_index = pp->req_idx;
1453 pp->crqb[in_index].sg_addr =
1454 cpu_to_le32(pp->sg_tbl_dma[qc->tag] & 0xffffffff);
1455 pp->crqb[in_index].sg_addr_hi =
1456 cpu_to_le32((pp->sg_tbl_dma[qc->tag] >> 16) >> 16);
1457 pp->crqb[in_index].ctrl_flags = cpu_to_le16(flags);
1459 cw = &pp->crqb[in_index].ata_cmd[0];
1462 /* Sadly, the CRQB cannot accomodate all registers--there are
1463 * only 11 bytes...so we must pick and choose required
1464 * registers based on the command. So, we drop feature and
1465 * hob_feature for [RW] DMA commands, but they are needed for
1466 * NCQ. NCQ will drop hob_nsect.
1468 switch (tf->command) {
1470 case ATA_CMD_READ_EXT:
1472 case ATA_CMD_WRITE_EXT:
1473 case ATA_CMD_WRITE_FUA_EXT:
1474 mv_crqb_pack_cmd(cw++, tf->hob_nsect, ATA_REG_NSECT, 0);
1476 case ATA_CMD_FPDMA_READ:
1477 case ATA_CMD_FPDMA_WRITE:
1478 mv_crqb_pack_cmd(cw++, tf->hob_feature, ATA_REG_FEATURE, 0);
1479 mv_crqb_pack_cmd(cw++, tf->feature, ATA_REG_FEATURE, 0);
1482 /* The only other commands EDMA supports in non-queued and
1483 * non-NCQ mode are: [RW] STREAM DMA and W DMA FUA EXT, none
1484 * of which are defined/used by Linux. If we get here, this
1485 * driver needs work.
1487 * FIXME: modify libata to give qc_prep a return value and
1488 * return error here.
1490 BUG_ON(tf->command);
1493 mv_crqb_pack_cmd(cw++, tf->nsect, ATA_REG_NSECT, 0);
1494 mv_crqb_pack_cmd(cw++, tf->hob_lbal, ATA_REG_LBAL, 0);
1495 mv_crqb_pack_cmd(cw++, tf->lbal, ATA_REG_LBAL, 0);
1496 mv_crqb_pack_cmd(cw++, tf->hob_lbam, ATA_REG_LBAM, 0);
1497 mv_crqb_pack_cmd(cw++, tf->lbam, ATA_REG_LBAM, 0);
1498 mv_crqb_pack_cmd(cw++, tf->hob_lbah, ATA_REG_LBAH, 0);
1499 mv_crqb_pack_cmd(cw++, tf->lbah, ATA_REG_LBAH, 0);
1500 mv_crqb_pack_cmd(cw++, tf->device, ATA_REG_DEVICE, 0);
1501 mv_crqb_pack_cmd(cw++, tf->command, ATA_REG_CMD, 1); /* last */
1503 if (!(qc->flags & ATA_QCFLAG_DMAMAP))
1509 * mv_qc_prep_iie - Host specific command preparation.
1510 * @qc: queued command to prepare
1512 * This routine simply redirects to the general purpose routine
1513 * if command is not DMA. Else, it handles prep of the CRQB
1514 * (command request block), does some sanity checking, and calls
1515 * the SG load routine.
1518 * Inherited from caller.
1520 static void mv_qc_prep_iie(struct ata_queued_cmd *qc)
1522 struct ata_port *ap = qc->ap;
1523 struct mv_port_priv *pp = ap->private_data;
1524 struct mv_crqb_iie *crqb;
1525 struct ata_taskfile *tf;
1529 if ((qc->tf.protocol != ATA_PROT_DMA) &&
1530 (qc->tf.protocol != ATA_PROT_NCQ))
1533 /* Fill in Gen IIE command request block */
1534 if (!(qc->tf.flags & ATA_TFLAG_WRITE))
1535 flags |= CRQB_FLAG_READ;
1537 WARN_ON(MV_MAX_Q_DEPTH <= qc->tag);
1538 flags |= qc->tag << CRQB_TAG_SHIFT;
1539 flags |= qc->tag << CRQB_HOSTQ_SHIFT;
1540 flags |= (qc->dev->link->pmp & 0xf) << CRQB_PMP_SHIFT;
1542 /* get current queue index from software */
1543 in_index = pp->req_idx;
1545 crqb = (struct mv_crqb_iie *) &pp->crqb[in_index];
1546 crqb->addr = cpu_to_le32(pp->sg_tbl_dma[qc->tag] & 0xffffffff);
1547 crqb->addr_hi = cpu_to_le32((pp->sg_tbl_dma[qc->tag] >> 16) >> 16);
1548 crqb->flags = cpu_to_le32(flags);
1551 crqb->ata_cmd[0] = cpu_to_le32(
1552 (tf->command << 16) |
1555 crqb->ata_cmd[1] = cpu_to_le32(
1561 crqb->ata_cmd[2] = cpu_to_le32(
1562 (tf->hob_lbal << 0) |
1563 (tf->hob_lbam << 8) |
1564 (tf->hob_lbah << 16) |
1565 (tf->hob_feature << 24)
1567 crqb->ata_cmd[3] = cpu_to_le32(
1569 (tf->hob_nsect << 8)
1572 if (!(qc->flags & ATA_QCFLAG_DMAMAP))
1578 * mv_qc_issue - Initiate a command to the host
1579 * @qc: queued command to start
1581 * This routine simply redirects to the general purpose routine
1582 * if command is not DMA. Else, it sanity checks our local
1583 * caches of the request producer/consumer indices then enables
1584 * DMA and bumps the request producer index.
1587 * Inherited from caller.
1589 static unsigned int mv_qc_issue(struct ata_queued_cmd *qc)
1591 struct ata_port *ap = qc->ap;
1592 void __iomem *port_mmio = mv_ap_base(ap);
1593 struct mv_port_priv *pp = ap->private_data;
1596 if ((qc->tf.protocol != ATA_PROT_DMA) &&
1597 (qc->tf.protocol != ATA_PROT_NCQ)) {
1599 * We're about to send a non-EDMA capable command to the
1600 * port. Turn off EDMA so there won't be problems accessing
1601 * shadow block, etc registers.
1604 mv_enable_port_irqs(ap, ERR_IRQ);
1605 mv_pmp_select(ap, qc->dev->link->pmp);
1606 return ata_sff_qc_issue(qc);
1609 mv_start_dma(ap, port_mmio, pp, qc->tf.protocol);
1611 pp->req_idx = (pp->req_idx + 1) & MV_MAX_Q_DEPTH_MASK;
1612 in_index = pp->req_idx << EDMA_REQ_Q_PTR_SHIFT;
1614 /* and write the request in pointer to kick the EDMA to life */
1615 writelfl((pp->crqb_dma & EDMA_REQ_Q_BASE_LO_MASK) | in_index,
1616 port_mmio + EDMA_REQ_Q_IN_PTR_OFS);
1621 static struct ata_queued_cmd *mv_get_active_qc(struct ata_port *ap)
1623 struct mv_port_priv *pp = ap->private_data;
1624 struct ata_queued_cmd *qc;
1626 if (pp->pp_flags & MV_PP_FLAG_NCQ_EN)
1628 qc = ata_qc_from_tag(ap, ap->link.active_tag);
1629 if (qc && (qc->tf.flags & ATA_TFLAG_POLLING))
1634 static void mv_pmp_error_handler(struct ata_port *ap)
1636 unsigned int pmp, pmp_map;
1637 struct mv_port_priv *pp = ap->private_data;
1639 if (pp->pp_flags & MV_PP_FLAG_DELAYED_EH) {
1641 * Perform NCQ error analysis on failed PMPs
1642 * before we freeze the port entirely.
1644 * The failed PMPs are marked earlier by mv_pmp_eh_prep().
1646 pmp_map = pp->delayed_eh_pmp_map;
1647 pp->pp_flags &= ~MV_PP_FLAG_DELAYED_EH;
1648 for (pmp = 0; pmp_map != 0; pmp++) {
1649 unsigned int this_pmp = (1 << pmp);
1650 if (pmp_map & this_pmp) {
1651 struct ata_link *link = &ap->pmp_link[pmp];
1652 pmp_map &= ~this_pmp;
1653 ata_eh_analyze_ncq_error(link);
1656 ata_port_freeze(ap);
1658 sata_pmp_error_handler(ap);
1661 static unsigned int mv_get_err_pmp_map(struct ata_port *ap)
1663 void __iomem *port_mmio = mv_ap_base(ap);
1665 return readl(port_mmio + SATA_TESTCTL_OFS) >> 16;
1668 static void mv_pmp_eh_prep(struct ata_port *ap, unsigned int pmp_map)
1670 struct ata_eh_info *ehi;
1674 * Initialize EH info for PMPs which saw device errors
1676 ehi = &ap->link.eh_info;
1677 for (pmp = 0; pmp_map != 0; pmp++) {
1678 unsigned int this_pmp = (1 << pmp);
1679 if (pmp_map & this_pmp) {
1680 struct ata_link *link = &ap->pmp_link[pmp];
1682 pmp_map &= ~this_pmp;
1683 ehi = &link->eh_info;
1684 ata_ehi_clear_desc(ehi);
1685 ata_ehi_push_desc(ehi, "dev err");
1686 ehi->err_mask |= AC_ERR_DEV;
1687 ehi->action |= ATA_EH_RESET;
1688 ata_link_abort(link);
1693 static int mv_req_q_empty(struct ata_port *ap)
1695 void __iomem *port_mmio = mv_ap_base(ap);
1696 u32 in_ptr, out_ptr;
1698 in_ptr = (readl(port_mmio + EDMA_REQ_Q_IN_PTR_OFS)
1699 >> EDMA_REQ_Q_PTR_SHIFT) & MV_MAX_Q_DEPTH_MASK;
1700 out_ptr = (readl(port_mmio + EDMA_REQ_Q_OUT_PTR_OFS)
1701 >> EDMA_REQ_Q_PTR_SHIFT) & MV_MAX_Q_DEPTH_MASK;
1702 return (in_ptr == out_ptr); /* 1 == queue_is_empty */
1705 static int mv_handle_fbs_ncq_dev_err(struct ata_port *ap)
1707 struct mv_port_priv *pp = ap->private_data;
1709 unsigned int old_map, new_map;
1712 * Device error during FBS+NCQ operation:
1714 * Set a port flag to prevent further I/O being enqueued.
1715 * Leave the EDMA running to drain outstanding commands from this port.
1716 * Perform the post-mortem/EH only when all responses are complete.
1717 * Follow recovery sequence from 6042/7042 datasheet (7.3.15.4.2.2).
1719 if (!(pp->pp_flags & MV_PP_FLAG_DELAYED_EH)) {
1720 pp->pp_flags |= MV_PP_FLAG_DELAYED_EH;
1721 pp->delayed_eh_pmp_map = 0;
1723 old_map = pp->delayed_eh_pmp_map;
1724 new_map = old_map | mv_get_err_pmp_map(ap);
1726 if (old_map != new_map) {
1727 pp->delayed_eh_pmp_map = new_map;
1728 mv_pmp_eh_prep(ap, new_map & ~old_map);
1730 failed_links = hweight16(new_map);
1732 ata_port_printk(ap, KERN_INFO, "%s: pmp_map=%04x qc_map=%04x "
1733 "failed_links=%d nr_active_links=%d\n",
1734 __func__, pp->delayed_eh_pmp_map,
1735 ap->qc_active, failed_links,
1736 ap->nr_active_links);
1738 if (ap->nr_active_links <= failed_links && mv_req_q_empty(ap)) {
1739 mv_process_crpb_entries(ap, pp);
1742 ata_port_printk(ap, KERN_INFO, "%s: done\n", __func__);
1743 return 1; /* handled */
1745 ata_port_printk(ap, KERN_INFO, "%s: waiting\n", __func__);
1746 return 1; /* handled */
1749 static int mv_handle_fbs_non_ncq_dev_err(struct ata_port *ap)
1752 * Possible future enhancement:
1754 * FBS+non-NCQ operation is not yet implemented.
1755 * See related notes in mv_edma_cfg().
1757 * Device error during FBS+non-NCQ operation:
1759 * We need to snapshot the shadow registers for each failed command.
1760 * Follow recovery sequence from 6042/7042 datasheet (7.3.15.4.2.3).
1762 return 0; /* not handled */
1765 static int mv_handle_dev_err(struct ata_port *ap, u32 edma_err_cause)
1767 struct mv_port_priv *pp = ap->private_data;
1769 if (!(pp->pp_flags & MV_PP_FLAG_EDMA_EN))
1770 return 0; /* EDMA was not active: not handled */
1771 if (!(pp->pp_flags & MV_PP_FLAG_FBS_EN))
1772 return 0; /* FBS was not active: not handled */
1774 if (!(edma_err_cause & EDMA_ERR_DEV))
1775 return 0; /* non DEV error: not handled */
1776 edma_err_cause &= ~EDMA_ERR_IRQ_TRANSIENT;
1777 if (edma_err_cause & ~(EDMA_ERR_DEV | EDMA_ERR_SELF_DIS))
1778 return 0; /* other problems: not handled */
1780 if (pp->pp_flags & MV_PP_FLAG_NCQ_EN) {
1782 * EDMA should NOT have self-disabled for this case.
1783 * If it did, then something is wrong elsewhere,
1784 * and we cannot handle it here.
1786 if (edma_err_cause & EDMA_ERR_SELF_DIS) {
1787 ata_port_printk(ap, KERN_WARNING,
1788 "%s: err_cause=0x%x pp_flags=0x%x\n",
1789 __func__, edma_err_cause, pp->pp_flags);
1790 return 0; /* not handled */
1792 return mv_handle_fbs_ncq_dev_err(ap);
1795 * EDMA should have self-disabled for this case.
1796 * If it did not, then something is wrong elsewhere,
1797 * and we cannot handle it here.
1799 if (!(edma_err_cause & EDMA_ERR_SELF_DIS)) {
1800 ata_port_printk(ap, KERN_WARNING,
1801 "%s: err_cause=0x%x pp_flags=0x%x\n",
1802 __func__, edma_err_cause, pp->pp_flags);
1803 return 0; /* not handled */
1805 return mv_handle_fbs_non_ncq_dev_err(ap);
1807 return 0; /* not handled */
1810 static void mv_unexpected_intr(struct ata_port *ap, int edma_was_enabled)
1812 struct ata_eh_info *ehi = &ap->link.eh_info;
1813 char *when = "idle";
1815 ata_ehi_clear_desc(ehi);
1816 if (!ap || (ap->flags & ATA_FLAG_DISABLED)) {
1818 } else if (edma_was_enabled) {
1819 when = "EDMA enabled";
1821 struct ata_queued_cmd *qc = ata_qc_from_tag(ap, ap->link.active_tag);
1822 if (qc && (qc->tf.flags & ATA_TFLAG_POLLING))
1825 ata_ehi_push_desc(ehi, "unexpected device interrupt while %s", when);
1826 ehi->err_mask |= AC_ERR_OTHER;
1827 ehi->action |= ATA_EH_RESET;
1828 ata_port_freeze(ap);
1832 * mv_err_intr - Handle error interrupts on the port
1833 * @ap: ATA channel to manipulate
1834 * @qc: affected command (non-NCQ), or NULL
1836 * Most cases require a full reset of the chip's state machine,
1837 * which also performs a COMRESET.
1838 * Also, if the port disabled DMA, update our cached copy to match.
1841 * Inherited from caller.
1843 static void mv_err_intr(struct ata_port *ap)
1845 void __iomem *port_mmio = mv_ap_base(ap);
1846 u32 edma_err_cause, eh_freeze_mask, serr = 0;
1848 struct mv_port_priv *pp = ap->private_data;
1849 struct mv_host_priv *hpriv = ap->host->private_data;
1850 unsigned int action = 0, err_mask = 0;
1851 struct ata_eh_info *ehi = &ap->link.eh_info;
1852 struct ata_queued_cmd *qc;
1856 * Read and clear the SError and err_cause bits.
1857 * For GenIIe, if EDMA_ERR_TRANS_IRQ_7 is set, we also must read/clear
1858 * the FIS_IRQ_CAUSE register before clearing edma_err_cause.
1860 sata_scr_read(&ap->link, SCR_ERROR, &serr);
1861 sata_scr_write_flush(&ap->link, SCR_ERROR, serr);
1863 edma_err_cause = readl(port_mmio + EDMA_ERR_IRQ_CAUSE_OFS);
1864 if (IS_GEN_IIE(hpriv) && (edma_err_cause & EDMA_ERR_TRANS_IRQ_7)) {
1865 fis_cause = readl(port_mmio + SATA_FIS_IRQ_CAUSE_OFS);
1866 writelfl(~fis_cause, port_mmio + SATA_FIS_IRQ_CAUSE_OFS);
1868 writelfl(~edma_err_cause, port_mmio + EDMA_ERR_IRQ_CAUSE_OFS);
1870 if (edma_err_cause & EDMA_ERR_DEV) {
1872 * Device errors during FIS-based switching operation
1873 * require special handling.
1875 if (mv_handle_dev_err(ap, edma_err_cause))
1879 qc = mv_get_active_qc(ap);
1880 ata_ehi_clear_desc(ehi);
1881 ata_ehi_push_desc(ehi, "edma_err_cause=%08x pp_flags=%08x",
1882 edma_err_cause, pp->pp_flags);
1884 if (IS_GEN_IIE(hpriv) && (edma_err_cause & EDMA_ERR_TRANS_IRQ_7)) {
1885 ata_ehi_push_desc(ehi, "fis_cause=%08x", fis_cause);
1886 if (fis_cause & SATA_FIS_IRQ_AN) {
1887 u32 ec = edma_err_cause &
1888 ~(EDMA_ERR_TRANS_IRQ_7 | EDMA_ERR_IRQ_TRANSIENT);
1889 sata_async_notification(ap);
1891 return; /* Just an AN; no need for the nukes */
1892 ata_ehi_push_desc(ehi, "SDB notify");
1896 * All generations share these EDMA error cause bits:
1898 if (edma_err_cause & EDMA_ERR_DEV) {
1899 err_mask |= AC_ERR_DEV;
1900 action |= ATA_EH_RESET;
1901 ata_ehi_push_desc(ehi, "dev error");
1903 if (edma_err_cause & (EDMA_ERR_D_PAR | EDMA_ERR_PRD_PAR |
1904 EDMA_ERR_CRQB_PAR | EDMA_ERR_CRPB_PAR |
1905 EDMA_ERR_INTRL_PAR)) {
1906 err_mask |= AC_ERR_ATA_BUS;
1907 action |= ATA_EH_RESET;
1908 ata_ehi_push_desc(ehi, "parity error");
1910 if (edma_err_cause & (EDMA_ERR_DEV_DCON | EDMA_ERR_DEV_CON)) {
1911 ata_ehi_hotplugged(ehi);
1912 ata_ehi_push_desc(ehi, edma_err_cause & EDMA_ERR_DEV_DCON ?
1913 "dev disconnect" : "dev connect");
1914 action |= ATA_EH_RESET;
1918 * Gen-I has a different SELF_DIS bit,
1919 * different FREEZE bits, and no SERR bit:
1921 if (IS_GEN_I(hpriv)) {
1922 eh_freeze_mask = EDMA_EH_FREEZE_5;
1923 if (edma_err_cause & EDMA_ERR_SELF_DIS_5) {
1924 pp->pp_flags &= ~MV_PP_FLAG_EDMA_EN;
1925 ata_ehi_push_desc(ehi, "EDMA self-disable");
1928 eh_freeze_mask = EDMA_EH_FREEZE;
1929 if (edma_err_cause & EDMA_ERR_SELF_DIS) {
1930 pp->pp_flags &= ~MV_PP_FLAG_EDMA_EN;
1931 ata_ehi_push_desc(ehi, "EDMA self-disable");
1933 if (edma_err_cause & EDMA_ERR_SERR) {
1934 ata_ehi_push_desc(ehi, "SError=%08x", serr);
1935 err_mask |= AC_ERR_ATA_BUS;
1936 action |= ATA_EH_RESET;
1941 err_mask = AC_ERR_OTHER;
1942 action |= ATA_EH_RESET;
1945 ehi->serror |= serr;
1946 ehi->action |= action;
1949 qc->err_mask |= err_mask;
1951 ehi->err_mask |= err_mask;
1953 if (err_mask == AC_ERR_DEV) {
1955 * Cannot do ata_port_freeze() here,
1956 * because it would kill PIO access,
1957 * which is needed for further diagnosis.
1961 } else if (edma_err_cause & eh_freeze_mask) {
1963 * Note to self: ata_port_freeze() calls ata_port_abort()
1965 ata_port_freeze(ap);
1972 ata_link_abort(qc->dev->link);
1978 static void mv_process_crpb_response(struct ata_port *ap,
1979 struct mv_crpb *response, unsigned int tag, int ncq_enabled)
1981 struct ata_queued_cmd *qc = ata_qc_from_tag(ap, tag);
1985 u16 edma_status = le16_to_cpu(response->flags);
1987 * edma_status from a response queue entry:
1988 * LSB is from EDMA_ERR_IRQ_CAUSE_OFS (non-NCQ only).
1989 * MSB is saved ATA status from command completion.
1992 u8 err_cause = edma_status & 0xff & ~EDMA_ERR_DEV;
1995 * Error will be seen/handled by mv_err_intr().
1996 * So do nothing at all here.
2001 ata_status = edma_status >> CRPB_FLAG_STATUS_SHIFT;
2002 if (!ac_err_mask(ata_status))
2003 ata_qc_complete(qc);
2004 /* else: leave it for mv_err_intr() */
2006 ata_port_printk(ap, KERN_ERR, "%s: no qc for tag=%d\n",
2011 static void mv_process_crpb_entries(struct ata_port *ap, struct mv_port_priv *pp)
2013 void __iomem *port_mmio = mv_ap_base(ap);
2014 struct mv_host_priv *hpriv = ap->host->private_data;
2016 bool work_done = false;
2017 int ncq_enabled = (pp->pp_flags & MV_PP_FLAG_NCQ_EN);
2019 /* Get the hardware queue position index */
2020 in_index = (readl(port_mmio + EDMA_RSP_Q_IN_PTR_OFS)
2021 >> EDMA_RSP_Q_PTR_SHIFT) & MV_MAX_Q_DEPTH_MASK;
2023 /* Process new responses from since the last time we looked */
2024 while (in_index != pp->resp_idx) {
2026 struct mv_crpb *response = &pp->crpb[pp->resp_idx];
2028 pp->resp_idx = (pp->resp_idx + 1) & MV_MAX_Q_DEPTH_MASK;
2030 if (IS_GEN_I(hpriv)) {
2031 /* 50xx: no NCQ, only one command active at a time */
2032 tag = ap->link.active_tag;
2034 /* Gen II/IIE: get command tag from CRPB entry */
2035 tag = le16_to_cpu(response->id) & 0x1f;
2037 mv_process_crpb_response(ap, response, tag, ncq_enabled);
2041 /* Update the software queue position index in hardware */
2043 writelfl((pp->crpb_dma & EDMA_RSP_Q_BASE_LO_MASK) |
2044 (pp->resp_idx << EDMA_RSP_Q_PTR_SHIFT),
2045 port_mmio + EDMA_RSP_Q_OUT_PTR_OFS);
2048 static void mv_port_intr(struct ata_port *ap, u32 port_cause)
2050 struct mv_port_priv *pp;
2051 int edma_was_enabled;
2053 if (!ap || (ap->flags & ATA_FLAG_DISABLED)) {
2054 mv_unexpected_intr(ap, 0);
2058 * Grab a snapshot of the EDMA_EN flag setting,
2059 * so that we have a consistent view for this port,
2060 * even if something we call of our routines changes it.
2062 pp = ap->private_data;
2063 edma_was_enabled = (pp->pp_flags & MV_PP_FLAG_EDMA_EN);
2065 * Process completed CRPB response(s) before other events.
2067 if (edma_was_enabled && (port_cause & DONE_IRQ)) {
2068 mv_process_crpb_entries(ap, pp);
2069 if (pp->pp_flags & MV_PP_FLAG_DELAYED_EH)
2070 mv_handle_fbs_ncq_dev_err(ap);
2073 * Handle chip-reported errors, or continue on to handle PIO.
2075 if (unlikely(port_cause & ERR_IRQ)) {
2077 } else if (!edma_was_enabled) {
2078 struct ata_queued_cmd *qc = mv_get_active_qc(ap);
2080 ata_sff_host_intr(ap, qc);
2082 mv_unexpected_intr(ap, edma_was_enabled);
2087 * mv_host_intr - Handle all interrupts on the given host controller
2088 * @host: host specific structure
2089 * @main_irq_cause: Main interrupt cause register for the chip.
2092 * Inherited from caller.
2094 static int mv_host_intr(struct ata_host *host, u32 main_irq_cause)
2096 struct mv_host_priv *hpriv = host->private_data;
2097 void __iomem *mmio = hpriv->base, *hc_mmio;
2098 unsigned int handled = 0, port;
2100 for (port = 0; port < hpriv->n_ports; port++) {
2101 struct ata_port *ap = host->ports[port];
2102 unsigned int p, shift, hardport, port_cause;
2104 MV_PORT_TO_SHIFT_AND_HARDPORT(port, shift, hardport);
2106 * Each hc within the host has its own hc_irq_cause register,
2107 * where the interrupting ports bits get ack'd.
2109 if (hardport == 0) { /* first port on this hc ? */
2110 u32 hc_cause = (main_irq_cause >> shift) & HC0_IRQ_PEND;
2111 u32 port_mask, ack_irqs;
2113 * Skip this entire hc if nothing pending for any ports
2116 port += MV_PORTS_PER_HC - 1;
2120 * We don't need/want to read the hc_irq_cause register,
2121 * because doing so hurts performance, and
2122 * main_irq_cause already gives us everything we need.
2124 * But we do have to *write* to the hc_irq_cause to ack
2125 * the ports that we are handling this time through.
2127 * This requires that we create a bitmap for those
2128 * ports which interrupted us, and use that bitmap
2129 * to ack (only) those ports via hc_irq_cause.
2132 for (p = 0; p < MV_PORTS_PER_HC; ++p) {
2133 if ((port + p) >= hpriv->n_ports)
2135 port_mask = (DONE_IRQ | ERR_IRQ) << (p * 2);
2136 if (hc_cause & port_mask)
2137 ack_irqs |= (DMA_IRQ | DEV_IRQ) << p;
2139 hc_mmio = mv_hc_base_from_port(mmio, port);
2140 writelfl(~ack_irqs, hc_mmio + HC_IRQ_CAUSE_OFS);
2144 * Handle interrupts signalled for this port:
2146 port_cause = (main_irq_cause >> shift) & (DONE_IRQ | ERR_IRQ);
2148 mv_port_intr(ap, port_cause);
2153 static int mv_pci_error(struct ata_host *host, void __iomem *mmio)
2155 struct mv_host_priv *hpriv = host->private_data;
2156 struct ata_port *ap;
2157 struct ata_queued_cmd *qc;
2158 struct ata_eh_info *ehi;
2159 unsigned int i, err_mask, printed = 0;
2162 err_cause = readl(mmio + hpriv->irq_cause_ofs);
2164 dev_printk(KERN_ERR, host->dev, "PCI ERROR; PCI IRQ cause=0x%08x\n",
2167 DPRINTK("All regs @ PCI error\n");
2168 mv_dump_all_regs(mmio, -1, to_pci_dev(host->dev));
2170 writelfl(0, mmio + hpriv->irq_cause_ofs);
2172 for (i = 0; i < host->n_ports; i++) {
2173 ap = host->ports[i];
2174 if (!ata_link_offline(&ap->link)) {
2175 ehi = &ap->link.eh_info;
2176 ata_ehi_clear_desc(ehi);
2178 ata_ehi_push_desc(ehi,
2179 "PCI err cause 0x%08x", err_cause);
2180 err_mask = AC_ERR_HOST_BUS;
2181 ehi->action = ATA_EH_RESET;
2182 qc = ata_qc_from_tag(ap, ap->link.active_tag);
2184 qc->err_mask |= err_mask;
2186 ehi->err_mask |= err_mask;
2188 ata_port_freeze(ap);
2191 return 1; /* handled */
2195 * mv_interrupt - Main interrupt event handler
2197 * @dev_instance: private data; in this case the host structure
2199 * Read the read only register to determine if any host
2200 * controllers have pending interrupts. If so, call lower level
2201 * routine to handle. Also check for PCI errors which are only
2205 * This routine holds the host lock while processing pending
2208 static irqreturn_t mv_interrupt(int irq, void *dev_instance)
2210 struct ata_host *host = dev_instance;
2211 struct mv_host_priv *hpriv = host->private_data;
2212 unsigned int handled = 0;
2213 u32 main_irq_cause, pending_irqs;
2215 spin_lock(&host->lock);
2216 main_irq_cause = readl(hpriv->main_irq_cause_addr);
2217 pending_irqs = main_irq_cause & hpriv->main_irq_mask;
2219 * Deal with cases where we either have nothing pending, or have read
2220 * a bogus register value which can indicate HW removal or PCI fault.
2222 if (pending_irqs && main_irq_cause != 0xffffffffU) {
2223 if (unlikely((pending_irqs & PCI_ERR) && !IS_SOC(hpriv)))
2224 handled = mv_pci_error(host, hpriv->base);
2226 handled = mv_host_intr(host, pending_irqs);
2228 spin_unlock(&host->lock);
2229 return IRQ_RETVAL(handled);
2232 static unsigned int mv5_scr_offset(unsigned int sc_reg_in)
2236 switch (sc_reg_in) {
2240 ofs = sc_reg_in * sizeof(u32);
2249 static int mv5_scr_read(struct ata_port *ap, unsigned int sc_reg_in, u32 *val)
2251 struct mv_host_priv *hpriv = ap->host->private_data;
2252 void __iomem *mmio = hpriv->base;
2253 void __iomem *addr = mv5_phy_base(mmio, ap->port_no);
2254 unsigned int ofs = mv5_scr_offset(sc_reg_in);
2256 if (ofs != 0xffffffffU) {
2257 *val = readl(addr + ofs);
2263 static int mv5_scr_write(struct ata_port *ap, unsigned int sc_reg_in, u32 val)
2265 struct mv_host_priv *hpriv = ap->host->private_data;
2266 void __iomem *mmio = hpriv->base;
2267 void __iomem *addr = mv5_phy_base(mmio, ap->port_no);
2268 unsigned int ofs = mv5_scr_offset(sc_reg_in);
2270 if (ofs != 0xffffffffU) {
2271 writelfl(val, addr + ofs);
2277 static void mv5_reset_bus(struct ata_host *host, void __iomem *mmio)
2279 struct pci_dev *pdev = to_pci_dev(host->dev);
2282 early_5080 = (pdev->device == 0x5080) && (pdev->revision == 0);
2285 u32 tmp = readl(mmio + MV_PCI_EXP_ROM_BAR_CTL);
2287 writel(tmp, mmio + MV_PCI_EXP_ROM_BAR_CTL);
2290 mv_reset_pci_bus(host, mmio);
2293 static void mv5_reset_flash(struct mv_host_priv *hpriv, void __iomem *mmio)
2295 writel(0x0fcfffff, mmio + MV_FLASH_CTL_OFS);
2298 static void mv5_read_preamp(struct mv_host_priv *hpriv, int idx,
2301 void __iomem *phy_mmio = mv5_phy_base(mmio, idx);
2304 tmp = readl(phy_mmio + MV5_PHY_MODE);
2306 hpriv->signal[idx].pre = tmp & 0x1800; /* bits 12:11 */
2307 hpriv->signal[idx].amps = tmp & 0xe0; /* bits 7:5 */
2310 static void mv5_enable_leds(struct mv_host_priv *hpriv, void __iomem *mmio)
2314 writel(0, mmio + MV_GPIO_PORT_CTL_OFS);
2316 /* FIXME: handle MV_HP_ERRATA_50XXB2 errata */
2318 tmp = readl(mmio + MV_PCI_EXP_ROM_BAR_CTL);
2320 writel(tmp, mmio + MV_PCI_EXP_ROM_BAR_CTL);
2323 static void mv5_phy_errata(struct mv_host_priv *hpriv, void __iomem *mmio,
2326 void __iomem *phy_mmio = mv5_phy_base(mmio, port);
2327 const u32 mask = (1<<12) | (1<<11) | (1<<7) | (1<<6) | (1<<5);
2329 int fix_apm_sq = (hpriv->hp_flags & MV_HP_ERRATA_50XXB0);
2332 tmp = readl(phy_mmio + MV5_LTMODE_OFS);
2334 writel(tmp, phy_mmio + MV5_LTMODE_OFS);
2336 tmp = readl(phy_mmio + MV5_PHY_CTL_OFS);
2339 writel(tmp, phy_mmio + MV5_PHY_CTL_OFS);
2342 tmp = readl(phy_mmio + MV5_PHY_MODE);
2344 tmp |= hpriv->signal[port].pre;
2345 tmp |= hpriv->signal[port].amps;
2346 writel(tmp, phy_mmio + MV5_PHY_MODE);
2351 #define ZERO(reg) writel(0, port_mmio + (reg))
2352 static void mv5_reset_hc_port(struct mv_host_priv *hpriv, void __iomem *mmio,
2355 void __iomem *port_mmio = mv_port_base(mmio, port);
2357 mv_reset_channel(hpriv, mmio, port);
2359 ZERO(0x028); /* command */
2360 writel(0x11f, port_mmio + EDMA_CFG_OFS);
2361 ZERO(0x004); /* timer */
2362 ZERO(0x008); /* irq err cause */
2363 ZERO(0x00c); /* irq err mask */
2364 ZERO(0x010); /* rq bah */
2365 ZERO(0x014); /* rq inp */
2366 ZERO(0x018); /* rq outp */
2367 ZERO(0x01c); /* respq bah */
2368 ZERO(0x024); /* respq outp */
2369 ZERO(0x020); /* respq inp */
2370 ZERO(0x02c); /* test control */
2371 writel(0xbc, port_mmio + EDMA_IORDY_TMOUT_OFS);
2375 #define ZERO(reg) writel(0, hc_mmio + (reg))
2376 static void mv5_reset_one_hc(struct mv_host_priv *hpriv, void __iomem *mmio,
2379 void __iomem *hc_mmio = mv_hc_base(mmio, hc);
2387 tmp = readl(hc_mmio + 0x20);
2390 writel(tmp, hc_mmio + 0x20);
2394 static int mv5_reset_hc(struct mv_host_priv *hpriv, void __iomem *mmio,
2397 unsigned int hc, port;
2399 for (hc = 0; hc < n_hc; hc++) {
2400 for (port = 0; port < MV_PORTS_PER_HC; port++)
2401 mv5_reset_hc_port(hpriv, mmio,
2402 (hc * MV_PORTS_PER_HC) + port);
2404 mv5_reset_one_hc(hpriv, mmio, hc);
2411 #define ZERO(reg) writel(0, mmio + (reg))
2412 static void mv_reset_pci_bus(struct ata_host *host, void __iomem *mmio)
2414 struct mv_host_priv *hpriv = host->private_data;
2417 tmp = readl(mmio + MV_PCI_MODE_OFS);
2419 writel(tmp, mmio + MV_PCI_MODE_OFS);
2421 ZERO(MV_PCI_DISC_TIMER);
2422 ZERO(MV_PCI_MSI_TRIGGER);
2423 writel(0x000100ff, mmio + MV_PCI_XBAR_TMOUT_OFS);
2424 ZERO(MV_PCI_SERR_MASK);
2425 ZERO(hpriv->irq_cause_ofs);
2426 ZERO(hpriv->irq_mask_ofs);
2427 ZERO(MV_PCI_ERR_LOW_ADDRESS);
2428 ZERO(MV_PCI_ERR_HIGH_ADDRESS);
2429 ZERO(MV_PCI_ERR_ATTRIBUTE);
2430 ZERO(MV_PCI_ERR_COMMAND);
2434 static void mv6_reset_flash(struct mv_host_priv *hpriv, void __iomem *mmio)
2438 mv5_reset_flash(hpriv, mmio);
2440 tmp = readl(mmio + MV_GPIO_PORT_CTL_OFS);
2442 tmp |= (1 << 5) | (1 << 6);
2443 writel(tmp, mmio + MV_GPIO_PORT_CTL_OFS);
2447 * mv6_reset_hc - Perform the 6xxx global soft reset
2448 * @mmio: base address of the HBA
2450 * This routine only applies to 6xxx parts.
2453 * Inherited from caller.
2455 static int mv6_reset_hc(struct mv_host_priv *hpriv, void __iomem *mmio,
2458 void __iomem *reg = mmio + PCI_MAIN_CMD_STS_OFS;
2462 /* Following procedure defined in PCI "main command and status
2466 writel(t | STOP_PCI_MASTER, reg);
2468 for (i = 0; i < 1000; i++) {
2471 if (PCI_MASTER_EMPTY & t)
2474 if (!(PCI_MASTER_EMPTY & t)) {
2475 printk(KERN_ERR DRV_NAME ": PCI master won't flush\n");
2483 writel(t | GLOB_SFT_RST, reg);
2486 } while (!(GLOB_SFT_RST & t) && (i-- > 0));
2488 if (!(GLOB_SFT_RST & t)) {
2489 printk(KERN_ERR DRV_NAME ": can't set global reset\n");
2494 /* clear reset and *reenable the PCI master* (not mentioned in spec) */
2497 writel(t & ~(GLOB_SFT_RST | STOP_PCI_MASTER), reg);
2500 } while ((GLOB_SFT_RST & t) && (i-- > 0));
2502 if (GLOB_SFT_RST & t) {
2503 printk(KERN_ERR DRV_NAME ": can't clear global reset\n");
2510 static void mv6_read_preamp(struct mv_host_priv *hpriv, int idx,
2513 void __iomem *port_mmio;
2516 tmp = readl(mmio + MV_RESET_CFG_OFS);
2517 if ((tmp & (1 << 0)) == 0) {
2518 hpriv->signal[idx].amps = 0x7 << 8;
2519 hpriv->signal[idx].pre = 0x1 << 5;
2523 port_mmio = mv_port_base(mmio, idx);
2524 tmp = readl(port_mmio + PHY_MODE2);
2526 hpriv->signal[idx].amps = tmp & 0x700; /* bits 10:8 */
2527 hpriv->signal[idx].pre = tmp & 0xe0; /* bits 7:5 */
2530 static void mv6_enable_leds(struct mv_host_priv *hpriv, void __iomem *mmio)
2532 writel(0x00000060, mmio + MV_GPIO_PORT_CTL_OFS);
2535 static void mv6_phy_errata(struct mv_host_priv *hpriv, void __iomem *mmio,
2538 void __iomem *port_mmio = mv_port_base(mmio, port);
2540 u32 hp_flags = hpriv->hp_flags;
2542 hp_flags & (MV_HP_ERRATA_60X1B2 | MV_HP_ERRATA_60X1C0);
2544 hp_flags & (MV_HP_ERRATA_60X1B2 | MV_HP_ERRATA_60X1C0);
2547 if (fix_phy_mode2) {
2548 m2 = readl(port_mmio + PHY_MODE2);
2551 writel(m2, port_mmio + PHY_MODE2);
2555 m2 = readl(port_mmio + PHY_MODE2);
2556 m2 &= ~((1 << 16) | (1 << 31));
2557 writel(m2, port_mmio + PHY_MODE2);
2563 * Gen-II/IIe PHY_MODE3 errata RM#2:
2564 * Achieves better receiver noise performance than the h/w default:
2566 m3 = readl(port_mmio + PHY_MODE3);
2567 m3 = (m3 & 0x1f) | (0x5555601 << 5);
2569 /* Guideline 88F5182 (GL# SATA-S11) */
2573 if (fix_phy_mode4) {
2574 u32 m4 = readl(port_mmio + PHY_MODE4);
2576 * Enforce reserved-bit restrictions on GenIIe devices only.
2577 * For earlier chipsets, force only the internal config field
2578 * (workaround for errata FEr SATA#10 part 1).
2580 if (IS_GEN_IIE(hpriv))
2581 m4 = (m4 & ~PHY_MODE4_RSVD_ZEROS) | PHY_MODE4_RSVD_ONES;
2583 m4 = (m4 & ~PHY_MODE4_CFG_MASK) | PHY_MODE4_CFG_VALUE;
2584 writel(m4, port_mmio + PHY_MODE4);
2587 * Workaround for 60x1-B2 errata SATA#13:
2588 * Any write to PHY_MODE4 (above) may corrupt PHY_MODE3,
2589 * so we must always rewrite PHY_MODE3 after PHY_MODE4.
2591 writel(m3, port_mmio + PHY_MODE3);
2593 /* Revert values of pre-emphasis and signal amps to the saved ones */
2594 m2 = readl(port_mmio + PHY_MODE2);
2596 m2 &= ~MV_M2_PREAMP_MASK;
2597 m2 |= hpriv->signal[port].amps;
2598 m2 |= hpriv->signal[port].pre;
2601 /* according to mvSata 3.6.1, some IIE values are fixed */
2602 if (IS_GEN_IIE(hpriv)) {
2607 writel(m2, port_mmio + PHY_MODE2);
2610 /* TODO: use the generic LED interface to configure the SATA Presence */
2611 /* & Acitivy LEDs on the board */
2612 static void mv_soc_enable_leds(struct mv_host_priv *hpriv,
2618 static void mv_soc_read_preamp(struct mv_host_priv *hpriv, int idx,
2621 void __iomem *port_mmio;
2624 port_mmio = mv_port_base(mmio, idx);
2625 tmp = readl(port_mmio + PHY_MODE2);
2627 hpriv->signal[idx].amps = tmp & 0x700; /* bits 10:8 */
2628 hpriv->signal[idx].pre = tmp & 0xe0; /* bits 7:5 */
2632 #define ZERO(reg) writel(0, port_mmio + (reg))
2633 static void mv_soc_reset_hc_port(struct mv_host_priv *hpriv,
2634 void __iomem *mmio, unsigned int port)
2636 void __iomem *port_mmio = mv_port_base(mmio, port);
2638 mv_reset_channel(hpriv, mmio, port);
2640 ZERO(0x028); /* command */
2641 writel(0x101f, port_mmio + EDMA_CFG_OFS);
2642 ZERO(0x004); /* timer */
2643 ZERO(0x008); /* irq err cause */
2644 ZERO(0x00c); /* irq err mask */
2645 ZERO(0x010); /* rq bah */
2646 ZERO(0x014); /* rq inp */
2647 ZERO(0x018); /* rq outp */
2648 ZERO(0x01c); /* respq bah */
2649 ZERO(0x024); /* respq outp */
2650 ZERO(0x020); /* respq inp */
2651 ZERO(0x02c); /* test control */
2652 writel(0xbc, port_mmio + EDMA_IORDY_TMOUT_OFS);
2657 #define ZERO(reg) writel(0, hc_mmio + (reg))
2658 static void mv_soc_reset_one_hc(struct mv_host_priv *hpriv,
2661 void __iomem *hc_mmio = mv_hc_base(mmio, 0);
2671 static int mv_soc_reset_hc(struct mv_host_priv *hpriv,
2672 void __iomem *mmio, unsigned int n_hc)
2676 for (port = 0; port < hpriv->n_ports; port++)
2677 mv_soc_reset_hc_port(hpriv, mmio, port);
2679 mv_soc_reset_one_hc(hpriv, mmio);
2684 static void mv_soc_reset_flash(struct mv_host_priv *hpriv,
2690 static void mv_soc_reset_bus(struct ata_host *host, void __iomem *mmio)
2695 static void mv_setup_ifcfg(void __iomem *port_mmio, int want_gen2i)
2697 u32 ifcfg = readl(port_mmio + SATA_INTERFACE_CFG_OFS);
2699 ifcfg = (ifcfg & 0xf7f) | 0x9b1000; /* from chip spec */
2701 ifcfg |= (1 << 7); /* enable gen2i speed */
2702 writelfl(ifcfg, port_mmio + SATA_INTERFACE_CFG_OFS);
2705 static void mv_reset_channel(struct mv_host_priv *hpriv, void __iomem *mmio,
2706 unsigned int port_no)
2708 void __iomem *port_mmio = mv_port_base(mmio, port_no);
2711 * The datasheet warns against setting EDMA_RESET when EDMA is active
2712 * (but doesn't say what the problem might be). So we first try
2713 * to disable the EDMA engine before doing the EDMA_RESET operation.
2715 mv_stop_edma_engine(port_mmio);
2716 writelfl(EDMA_RESET, port_mmio + EDMA_CMD_OFS);
2718 if (!IS_GEN_I(hpriv)) {
2719 /* Enable 3.0gb/s link speed: this survives EDMA_RESET */
2720 mv_setup_ifcfg(port_mmio, 1);
2723 * Strobing EDMA_RESET here causes a hard reset of the SATA transport,
2724 * link, and physical layers. It resets all SATA interface registers
2725 * (except for SATA_INTERFACE_CFG), and issues a COMRESET to the dev.
2727 writelfl(EDMA_RESET, port_mmio + EDMA_CMD_OFS);
2728 udelay(25); /* allow reset propagation */
2729 writelfl(0, port_mmio + EDMA_CMD_OFS);
2731 hpriv->ops->phy_errata(hpriv, mmio, port_no);
2733 if (IS_GEN_I(hpriv))
2737 static void mv_pmp_select(struct ata_port *ap, int pmp)
2739 if (sata_pmp_supported(ap)) {
2740 void __iomem *port_mmio = mv_ap_base(ap);
2741 u32 reg = readl(port_mmio + SATA_IFCTL_OFS);
2742 int old = reg & 0xf;
2745 reg = (reg & ~0xf) | pmp;
2746 writelfl(reg, port_mmio + SATA_IFCTL_OFS);
2751 static int mv_pmp_hardreset(struct ata_link *link, unsigned int *class,
2752 unsigned long deadline)
2754 mv_pmp_select(link->ap, sata_srst_pmp(link));
2755 return sata_std_hardreset(link, class, deadline);
2758 static int mv_softreset(struct ata_link *link, unsigned int *class,
2759 unsigned long deadline)
2761 mv_pmp_select(link->ap, sata_srst_pmp(link));
2762 return ata_sff_softreset(link, class, deadline);
2765 static int mv_hardreset(struct ata_link *link, unsigned int *class,
2766 unsigned long deadline)
2768 struct ata_port *ap = link->ap;
2769 struct mv_host_priv *hpriv = ap->host->private_data;
2770 struct mv_port_priv *pp = ap->private_data;
2771 void __iomem *mmio = hpriv->base;
2772 int rc, attempts = 0, extra = 0;
2776 mv_reset_channel(hpriv, mmio, ap->port_no);
2777 pp->pp_flags &= ~MV_PP_FLAG_EDMA_EN;
2779 /* Workaround for errata FEr SATA#10 (part 2) */
2781 const unsigned long *timing =
2782 sata_ehc_deb_timing(&link->eh_context);
2784 rc = sata_link_hardreset(link, timing, deadline + extra,
2786 rc = online ? -EAGAIN : rc;
2789 sata_scr_read(link, SCR_STATUS, &sstatus);
2790 if (!IS_GEN_I(hpriv) && ++attempts >= 5 && sstatus == 0x121) {
2791 /* Force 1.5gb/s link speed and try again */
2792 mv_setup_ifcfg(mv_ap_base(ap), 0);
2793 if (time_after(jiffies + HZ, deadline))
2794 extra = HZ; /* only extend it once, max */
2796 } while (sstatus != 0x0 && sstatus != 0x113 && sstatus != 0x123);
2801 static void mv_eh_freeze(struct ata_port *ap)
2804 mv_enable_port_irqs(ap, 0);
2807 static void mv_eh_thaw(struct ata_port *ap)
2809 struct mv_host_priv *hpriv = ap->host->private_data;
2810 unsigned int port = ap->port_no;
2811 unsigned int hardport = mv_hardport_from_port(port);
2812 void __iomem *hc_mmio = mv_hc_base_from_port(hpriv->base, port);
2813 void __iomem *port_mmio = mv_ap_base(ap);
2816 /* clear EDMA errors on this port */
2817 writel(0, port_mmio + EDMA_ERR_IRQ_CAUSE_OFS);
2819 /* clear pending irq events */
2820 hc_irq_cause = readl(hc_mmio + HC_IRQ_CAUSE_OFS);
2821 hc_irq_cause &= ~((DEV_IRQ | DMA_IRQ) << hardport);
2822 writelfl(hc_irq_cause, hc_mmio + HC_IRQ_CAUSE_OFS);
2824 mv_enable_port_irqs(ap, ERR_IRQ);
2828 * mv_port_init - Perform some early initialization on a single port.
2829 * @port: libata data structure storing shadow register addresses
2830 * @port_mmio: base address of the port
2832 * Initialize shadow register mmio addresses, clear outstanding
2833 * interrupts on the port, and unmask interrupts for the future
2834 * start of the port.
2837 * Inherited from caller.
2839 static void mv_port_init(struct ata_ioports *port, void __iomem *port_mmio)
2841 void __iomem *shd_base = port_mmio + SHD_BLK_OFS;
2844 /* PIO related setup
2846 port->data_addr = shd_base + (sizeof(u32) * ATA_REG_DATA);
2848 port->feature_addr = shd_base + (sizeof(u32) * ATA_REG_ERR);
2849 port->nsect_addr = shd_base + (sizeof(u32) * ATA_REG_NSECT);
2850 port->lbal_addr = shd_base + (sizeof(u32) * ATA_REG_LBAL);
2851 port->lbam_addr = shd_base + (sizeof(u32) * ATA_REG_LBAM);
2852 port->lbah_addr = shd_base + (sizeof(u32) * ATA_REG_LBAH);
2853 port->device_addr = shd_base + (sizeof(u32) * ATA_REG_DEVICE);
2855 port->command_addr = shd_base + (sizeof(u32) * ATA_REG_STATUS);
2856 /* special case: control/altstatus doesn't have ATA_REG_ address */
2857 port->altstatus_addr = port->ctl_addr = shd_base + SHD_CTL_AST_OFS;
2860 port->cmd_addr = port->bmdma_addr = port->scr_addr = NULL;
2862 /* Clear any currently outstanding port interrupt conditions */
2863 serr_ofs = mv_scr_offset(SCR_ERROR);
2864 writelfl(readl(port_mmio + serr_ofs), port_mmio + serr_ofs);
2865 writelfl(0, port_mmio + EDMA_ERR_IRQ_CAUSE_OFS);
2867 /* unmask all non-transient EDMA error interrupts */
2868 writelfl(~EDMA_ERR_IRQ_TRANSIENT, port_mmio + EDMA_ERR_IRQ_MASK_OFS);
2870 VPRINTK("EDMA cfg=0x%08x EDMA IRQ err cause/mask=0x%08x/0x%08x\n",
2871 readl(port_mmio + EDMA_CFG_OFS),
2872 readl(port_mmio + EDMA_ERR_IRQ_CAUSE_OFS),
2873 readl(port_mmio + EDMA_ERR_IRQ_MASK_OFS));
2876 static unsigned int mv_in_pcix_mode(struct ata_host *host)
2878 struct mv_host_priv *hpriv = host->private_data;
2879 void __iomem *mmio = hpriv->base;
2882 if (IS_SOC(hpriv) || !IS_PCIE(hpriv))
2883 return 0; /* not PCI-X capable */
2884 reg = readl(mmio + MV_PCI_MODE_OFS);
2885 if ((reg & MV_PCI_MODE_MASK) == 0)
2886 return 0; /* conventional PCI mode */
2887 return 1; /* chip is in PCI-X mode */
2890 static int mv_pci_cut_through_okay(struct ata_host *host)
2892 struct mv_host_priv *hpriv = host->private_data;
2893 void __iomem *mmio = hpriv->base;
2896 if (!mv_in_pcix_mode(host)) {
2897 reg = readl(mmio + PCI_COMMAND_OFS);
2898 if (reg & PCI_COMMAND_MRDTRIG)
2899 return 0; /* not okay */
2901 return 1; /* okay */
2904 static int mv_chip_id(struct ata_host *host, unsigned int board_idx)
2906 struct pci_dev *pdev = to_pci_dev(host->dev);
2907 struct mv_host_priv *hpriv = host->private_data;
2908 u32 hp_flags = hpriv->hp_flags;
2910 switch (board_idx) {
2912 hpriv->ops = &mv5xxx_ops;
2913 hp_flags |= MV_HP_GEN_I;
2915 switch (pdev->revision) {
2917 hp_flags |= MV_HP_ERRATA_50XXB0;
2920 hp_flags |= MV_HP_ERRATA_50XXB2;
2923 dev_printk(KERN_WARNING, &pdev->dev,
2924 "Applying 50XXB2 workarounds to unknown rev\n");
2925 hp_flags |= MV_HP_ERRATA_50XXB2;
2932 hpriv->ops = &mv5xxx_ops;
2933 hp_flags |= MV_HP_GEN_I;
2935 switch (pdev->revision) {
2937 hp_flags |= MV_HP_ERRATA_50XXB0;
2940 hp_flags |= MV_HP_ERRATA_50XXB2;
2943 dev_printk(KERN_WARNING, &pdev->dev,
2944 "Applying B2 workarounds to unknown rev\n");
2945 hp_flags |= MV_HP_ERRATA_50XXB2;
2952 hpriv->ops = &mv6xxx_ops;
2953 hp_flags |= MV_HP_GEN_II;
2955 switch (pdev->revision) {
2957 hp_flags |= MV_HP_ERRATA_60X1B2;
2960 hp_flags |= MV_HP_ERRATA_60X1C0;
2963 dev_printk(KERN_WARNING, &pdev->dev,
2964 "Applying B2 workarounds to unknown rev\n");
2965 hp_flags |= MV_HP_ERRATA_60X1B2;
2971 hp_flags |= MV_HP_PCIE | MV_HP_CUT_THROUGH;
2972 if (pdev->vendor == PCI_VENDOR_ID_TTI &&
2973 (pdev->device == 0x2300 || pdev->device == 0x2310))
2976 * Highpoint RocketRAID PCIe 23xx series cards:
2978 * Unconfigured drives are treated as "Legacy"
2979 * by the BIOS, and it overwrites sector 8 with
2980 * a "Lgcy" metadata block prior to Linux boot.
2982 * Configured drives (RAID or JBOD) leave sector 8
2983 * alone, but instead overwrite a high numbered
2984 * sector for the RAID metadata. This sector can
2985 * be determined exactly, by truncating the physical
2986 * drive capacity to a nice even GB value.
2988 * RAID metadata is at: (dev->n_sectors & ~0xfffff)
2990 * Warn the user, lest they think we're just buggy.
2992 printk(KERN_WARNING DRV_NAME ": Highpoint RocketRAID"
2993 " BIOS CORRUPTS DATA on all attached drives,"
2994 " regardless of if/how they are configured."
2996 printk(KERN_WARNING DRV_NAME ": For data safety, do not"
2997 " use sectors 8-9 on \"Legacy\" drives,"
2998 " and avoid the final two gigabytes on"
2999 " all RocketRAID BIOS initialized drives.\n");
3003 hpriv->ops = &mv6xxx_ops;
3004 hp_flags |= MV_HP_GEN_IIE;
3005 if (board_idx == chip_6042 && mv_pci_cut_through_okay(host))
3006 hp_flags |= MV_HP_CUT_THROUGH;
3008 switch (pdev->revision) {
3009 case 0x2: /* Rev.B0: the first/only public release */
3010 hp_flags |= MV_HP_ERRATA_60X1C0;
3013 dev_printk(KERN_WARNING, &pdev->dev,
3014 "Applying 60X1C0 workarounds to unknown rev\n");
3015 hp_flags |= MV_HP_ERRATA_60X1C0;
3020 hpriv->ops = &mv_soc_ops;
3021 hp_flags |= MV_HP_FLAG_SOC | MV_HP_ERRATA_60X1C0;
3025 dev_printk(KERN_ERR, host->dev,
3026 "BUG: invalid board index %u\n", board_idx);
3030 hpriv->hp_flags = hp_flags;
3031 if (hp_flags & MV_HP_PCIE) {
3032 hpriv->irq_cause_ofs = PCIE_IRQ_CAUSE_OFS;
3033 hpriv->irq_mask_ofs = PCIE_IRQ_MASK_OFS;
3034 hpriv->unmask_all_irqs = PCIE_UNMASK_ALL_IRQS;
3036 hpriv->irq_cause_ofs = PCI_IRQ_CAUSE_OFS;
3037 hpriv->irq_mask_ofs = PCI_IRQ_MASK_OFS;
3038 hpriv->unmask_all_irqs = PCI_UNMASK_ALL_IRQS;
3045 * mv_init_host - Perform some early initialization of the host.
3046 * @host: ATA host to initialize
3047 * @board_idx: controller index
3049 * If possible, do an early global reset of the host. Then do
3050 * our port init and clear/unmask all/relevant host interrupts.
3053 * Inherited from caller.
3055 static int mv_init_host(struct ata_host *host, unsigned int board_idx)
3057 int rc = 0, n_hc, port, hc;
3058 struct mv_host_priv *hpriv = host->private_data;
3059 void __iomem *mmio = hpriv->base;
3061 rc = mv_chip_id(host, board_idx);
3065 if (IS_SOC(hpriv)) {
3066 hpriv->main_irq_cause_addr = mmio + SOC_HC_MAIN_IRQ_CAUSE_OFS;
3067 hpriv->main_irq_mask_addr = mmio + SOC_HC_MAIN_IRQ_MASK_OFS;
3069 hpriv->main_irq_cause_addr = mmio + PCI_HC_MAIN_IRQ_CAUSE_OFS;
3070 hpriv->main_irq_mask_addr = mmio + PCI_HC_MAIN_IRQ_MASK_OFS;
3073 /* global interrupt mask: 0 == mask everything */
3074 mv_set_main_irq_mask(host, ~0, 0);
3076 n_hc = mv_get_hc_count(host->ports[0]->flags);
3078 for (port = 0; port < host->n_ports; port++)
3079 hpriv->ops->read_preamp(hpriv, port, mmio);
3081 rc = hpriv->ops->reset_hc(hpriv, mmio, n_hc);
3085 hpriv->ops->reset_flash(hpriv, mmio);
3086 hpriv->ops->reset_bus(host, mmio);
3087 hpriv->ops->enable_leds(hpriv, mmio);
3089 for (port = 0; port < host->n_ports; port++) {
3090 struct ata_port *ap = host->ports[port];
3091 void __iomem *port_mmio = mv_port_base(mmio, port);
3093 mv_port_init(&ap->ioaddr, port_mmio);
3096 if (!IS_SOC(hpriv)) {
3097 unsigned int offset = port_mmio - mmio;
3098 ata_port_pbar_desc(ap, MV_PRIMARY_BAR, -1, "mmio");
3099 ata_port_pbar_desc(ap, MV_PRIMARY_BAR, offset, "port");
3104 for (hc = 0; hc < n_hc; hc++) {
3105 void __iomem *hc_mmio = mv_hc_base(mmio, hc);
3107 VPRINTK("HC%i: HC config=0x%08x HC IRQ cause "
3108 "(before clear)=0x%08x\n", hc,
3109 readl(hc_mmio + HC_CFG_OFS),
3110 readl(hc_mmio + HC_IRQ_CAUSE_OFS));
3112 /* Clear any currently outstanding hc interrupt conditions */
3113 writelfl(0, hc_mmio + HC_IRQ_CAUSE_OFS);
3116 if (!IS_SOC(hpriv)) {
3117 /* Clear any currently outstanding host interrupt conditions */
3118 writelfl(0, mmio + hpriv->irq_cause_ofs);
3120 /* and unmask interrupt generation for host regs */
3121 writelfl(hpriv->unmask_all_irqs, mmio + hpriv->irq_mask_ofs);
3124 * enable only global host interrupts for now.
3125 * The per-port interrupts get done later as ports are set up.
3127 mv_set_main_irq_mask(host, 0, PCI_ERR);
3133 static int mv_create_dma_pools(struct mv_host_priv *hpriv, struct device *dev)
3135 hpriv->crqb_pool = dmam_pool_create("crqb_q", dev, MV_CRQB_Q_SZ,
3137 if (!hpriv->crqb_pool)
3140 hpriv->crpb_pool = dmam_pool_create("crpb_q", dev, MV_CRPB_Q_SZ,
3142 if (!hpriv->crpb_pool)
3145 hpriv->sg_tbl_pool = dmam_pool_create("sg_tbl", dev, MV_SG_TBL_SZ,
3147 if (!hpriv->sg_tbl_pool)
3153 static void mv_conf_mbus_windows(struct mv_host_priv *hpriv,
3154 struct mbus_dram_target_info *dram)
3158 for (i = 0; i < 4; i++) {
3159 writel(0, hpriv->base + WINDOW_CTRL(i));
3160 writel(0, hpriv->base + WINDOW_BASE(i));
3163 for (i = 0; i < dram->num_cs; i++) {
3164 struct mbus_dram_window *cs = dram->cs + i;
3166 writel(((cs->size - 1) & 0xffff0000) |
3167 (cs->mbus_attr << 8) |
3168 (dram->mbus_dram_target_id << 4) | 1,
3169 hpriv->base + WINDOW_CTRL(i));
3170 writel(cs->base, hpriv->base + WINDOW_BASE(i));
3175 * mv_platform_probe - handle a positive probe of an soc Marvell
3177 * @pdev: platform device found
3180 * Inherited from caller.
3182 static int mv_platform_probe(struct platform_device *pdev)
3184 static int printed_version;
3185 const struct mv_sata_platform_data *mv_platform_data;
3186 const struct ata_port_info *ppi[] =
3187 { &mv_port_info[chip_soc], NULL };
3188 struct ata_host *host;
3189 struct mv_host_priv *hpriv;
3190 struct resource *res;
3193 if (!printed_version++)
3194 dev_printk(KERN_INFO, &pdev->dev, "version " DRV_VERSION "\n");
3197 * Simple resource validation ..
3199 if (unlikely(pdev->num_resources != 2)) {
3200 dev_err(&pdev->dev, "invalid number of resources\n");
3205 * Get the register base first
3207 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
3212 mv_platform_data = pdev->dev.platform_data;
3213 n_ports = mv_platform_data->n_ports;
3215 host = ata_host_alloc_pinfo(&pdev->dev, ppi, n_ports);
3216 hpriv = devm_kzalloc(&pdev->dev, sizeof(*hpriv), GFP_KERNEL);
3218 if (!host || !hpriv)
3220 host->private_data = hpriv;
3221 hpriv->n_ports = n_ports;
3224 hpriv->base = devm_ioremap(&pdev->dev, res->start,
3225 res->end - res->start + 1);
3226 hpriv->base -= MV_SATAHC0_REG_BASE;
3229 * (Re-)program MBUS remapping windows if we are asked to.
3231 if (mv_platform_data->dram != NULL)
3232 mv_conf_mbus_windows(hpriv, mv_platform_data->dram);
3234 rc = mv_create_dma_pools(hpriv, &pdev->dev);
3238 /* initialize adapter */
3239 rc = mv_init_host(host, chip_soc);
3243 dev_printk(KERN_INFO, &pdev->dev,
3244 "slots %u ports %d\n", (unsigned)MV_MAX_Q_DEPTH,
3247 return ata_host_activate(host, platform_get_irq(pdev, 0), mv_interrupt,
3248 IRQF_SHARED, &mv6_sht);
3253 * mv_platform_remove - unplug a platform interface
3254 * @pdev: platform device
3256 * A platform bus SATA device has been unplugged. Perform the needed
3257 * cleanup. Also called on module unload for any active devices.
3259 static int __devexit mv_platform_remove(struct platform_device *pdev)
3261 struct device *dev = &pdev->dev;
3262 struct ata_host *host = dev_get_drvdata(dev);
3264 ata_host_detach(host);
3268 static struct platform_driver mv_platform_driver = {
3269 .probe = mv_platform_probe,
3270 .remove = __devexit_p(mv_platform_remove),
3273 .owner = THIS_MODULE,
3279 static int mv_pci_init_one(struct pci_dev *pdev,
3280 const struct pci_device_id *ent);
3283 static struct pci_driver mv_pci_driver = {
3285 .id_table = mv_pci_tbl,
3286 .probe = mv_pci_init_one,
3287 .remove = ata_pci_remove_one,
3293 static int msi; /* Use PCI msi; either zero (off, default) or non-zero */
3296 /* move to PCI layer or libata core? */
3297 static int pci_go_64(struct pci_dev *pdev)
3301 if (!pci_set_dma_mask(pdev, DMA_64BIT_MASK)) {
3302 rc = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK);
3304 rc = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
3306 dev_printk(KERN_ERR, &pdev->dev,
3307 "64-bit DMA enable failed\n");
3312 rc = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
3314 dev_printk(KERN_ERR, &pdev->dev,
3315 "32-bit DMA enable failed\n");
3318 rc = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
3320 dev_printk(KERN_ERR, &pdev->dev,
3321 "32-bit consistent DMA enable failed\n");
3330 * mv_print_info - Dump key info to kernel log for perusal.
3331 * @host: ATA host to print info about
3333 * FIXME: complete this.
3336 * Inherited from caller.
3338 static void mv_print_info(struct ata_host *host)
3340 struct pci_dev *pdev = to_pci_dev(host->dev);
3341 struct mv_host_priv *hpriv = host->private_data;
3343 const char *scc_s, *gen;
3345 /* Use this to determine the HW stepping of the chip so we know
3346 * what errata to workaround
3348 pci_read_config_byte(pdev, PCI_CLASS_DEVICE, &scc);
3351 else if (scc == 0x01)
3356 if (IS_GEN_I(hpriv))
3358 else if (IS_GEN_II(hpriv))
3360 else if (IS_GEN_IIE(hpriv))
3365 dev_printk(KERN_INFO, &pdev->dev,
3366 "Gen-%s %u slots %u ports %s mode IRQ via %s\n",
3367 gen, (unsigned)MV_MAX_Q_DEPTH, host->n_ports,
3368 scc_s, (MV_HP_FLAG_MSI & hpriv->hp_flags) ? "MSI" : "INTx");
3372 * mv_pci_init_one - handle a positive probe of a PCI Marvell host
3373 * @pdev: PCI device found
3374 * @ent: PCI device ID entry for the matched host
3377 * Inherited from caller.
3379 static int mv_pci_init_one(struct pci_dev *pdev,
3380 const struct pci_device_id *ent)
3382 static int printed_version;
3383 unsigned int board_idx = (unsigned int)ent->driver_data;
3384 const struct ata_port_info *ppi[] = { &mv_port_info[board_idx], NULL };
3385 struct ata_host *host;
3386 struct mv_host_priv *hpriv;
3389 if (!printed_version++)
3390 dev_printk(KERN_INFO, &pdev->dev, "version " DRV_VERSION "\n");
3393 n_ports = mv_get_hc_count(ppi[0]->flags) * MV_PORTS_PER_HC;
3395 host = ata_host_alloc_pinfo(&pdev->dev, ppi, n_ports);
3396 hpriv = devm_kzalloc(&pdev->dev, sizeof(*hpriv), GFP_KERNEL);
3397 if (!host || !hpriv)
3399 host->private_data = hpriv;
3400 hpriv->n_ports = n_ports;
3402 /* acquire resources */
3403 rc = pcim_enable_device(pdev);
3407 rc = pcim_iomap_regions(pdev, 1 << MV_PRIMARY_BAR, DRV_NAME);
3409 pcim_pin_device(pdev);
3412 host->iomap = pcim_iomap_table(pdev);
3413 hpriv->base = host->iomap[MV_PRIMARY_BAR];
3415 rc = pci_go_64(pdev);
3419 rc = mv_create_dma_pools(hpriv, &pdev->dev);
3423 /* initialize adapter */
3424 rc = mv_init_host(host, board_idx);
3428 /* Enable interrupts */
3429 if (msi && pci_enable_msi(pdev))
3432 mv_dump_pci_cfg(pdev, 0x68);
3433 mv_print_info(host);
3435 pci_set_master(pdev);
3436 pci_try_set_mwi(pdev);
3437 return ata_host_activate(host, pdev->irq, mv_interrupt, IRQF_SHARED,
3438 IS_GEN_I(hpriv) ? &mv5_sht : &mv6_sht);
3442 static int mv_platform_probe(struct platform_device *pdev);
3443 static int __devexit mv_platform_remove(struct platform_device *pdev);
3445 static int __init mv_init(void)
3449 rc = pci_register_driver(&mv_pci_driver);
3453 rc = platform_driver_register(&mv_platform_driver);
3457 pci_unregister_driver(&mv_pci_driver);
3462 static void __exit mv_exit(void)
3465 pci_unregister_driver(&mv_pci_driver);
3467 platform_driver_unregister(&mv_platform_driver);
3470 MODULE_AUTHOR("Brett Russ");
3471 MODULE_DESCRIPTION("SCSI low-level driver for Marvell SATA controllers");
3472 MODULE_LICENSE("GPL");
3473 MODULE_DEVICE_TABLE(pci, mv_pci_tbl);
3474 MODULE_VERSION(DRV_VERSION);
3475 MODULE_ALIAS("platform:" DRV_NAME);
3478 module_param(msi, int, 0444);
3479 MODULE_PARM_DESC(msi, "Enable use of PCI MSI (0=off, 1=on)");
3482 module_init(mv_init);
3483 module_exit(mv_exit);