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 "1.20"
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 */
125 /* SoC integrated controllers, no PCI interface */
126 MV_FLAG_SOC = (1 << 28),
128 MV_COMMON_FLAGS = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
129 ATA_FLAG_MMIO | ATA_FLAG_NO_ATAPI |
130 ATA_FLAG_PIO_POLLING,
132 MV_6XXX_FLAGS = MV_FLAG_IRQ_COALESCE,
134 MV_GENIIE_FLAGS = MV_COMMON_FLAGS | MV_6XXX_FLAGS |
135 ATA_FLAG_PMP | ATA_FLAG_ACPI_SATA |
136 ATA_FLAG_NCQ | ATA_FLAG_AN,
138 CRQB_FLAG_READ = (1 << 0),
140 CRQB_IOID_SHIFT = 6, /* CRQB Gen-II/IIE IO Id shift */
141 CRQB_PMP_SHIFT = 12, /* CRQB Gen-II/IIE PMP shift */
142 CRQB_HOSTQ_SHIFT = 17, /* CRQB Gen-II/IIE HostQueTag shift */
143 CRQB_CMD_ADDR_SHIFT = 8,
144 CRQB_CMD_CS = (0x2 << 11),
145 CRQB_CMD_LAST = (1 << 15),
147 CRPB_FLAG_STATUS_SHIFT = 8,
148 CRPB_IOID_SHIFT_6 = 5, /* CRPB Gen-II IO Id shift */
149 CRPB_IOID_SHIFT_7 = 7, /* CRPB Gen-IIE IO Id shift */
151 EPRD_FLAG_END_OF_TBL = (1 << 31),
153 /* PCI interface registers */
155 PCI_COMMAND_OFS = 0xc00,
156 PCI_COMMAND_MRDTRIG = (1 << 7), /* PCI Master Read Trigger */
158 PCI_MAIN_CMD_STS_OFS = 0xd30,
159 STOP_PCI_MASTER = (1 << 2),
160 PCI_MASTER_EMPTY = (1 << 3),
161 GLOB_SFT_RST = (1 << 4),
163 MV_PCI_MODE_OFS = 0xd00,
164 MV_PCI_MODE_MASK = 0x30,
166 MV_PCI_EXP_ROM_BAR_CTL = 0xd2c,
167 MV_PCI_DISC_TIMER = 0xd04,
168 MV_PCI_MSI_TRIGGER = 0xc38,
169 MV_PCI_SERR_MASK = 0xc28,
170 MV_PCI_XBAR_TMOUT_OFS = 0x1d04,
171 MV_PCI_ERR_LOW_ADDRESS = 0x1d40,
172 MV_PCI_ERR_HIGH_ADDRESS = 0x1d44,
173 MV_PCI_ERR_ATTRIBUTE = 0x1d48,
174 MV_PCI_ERR_COMMAND = 0x1d50,
176 PCI_IRQ_CAUSE_OFS = 0x1d58,
177 PCI_IRQ_MASK_OFS = 0x1d5c,
178 PCI_UNMASK_ALL_IRQS = 0x7fffff, /* bits 22-0 */
180 PCIE_IRQ_CAUSE_OFS = 0x1900,
181 PCIE_IRQ_MASK_OFS = 0x1910,
182 PCIE_UNMASK_ALL_IRQS = 0x40a, /* assorted bits */
184 /* Host Controller Main Interrupt Cause/Mask registers (1 per-chip) */
185 PCI_HC_MAIN_IRQ_CAUSE_OFS = 0x1d60,
186 PCI_HC_MAIN_IRQ_MASK_OFS = 0x1d64,
187 SOC_HC_MAIN_IRQ_CAUSE_OFS = 0x20020,
188 SOC_HC_MAIN_IRQ_MASK_OFS = 0x20024,
189 ERR_IRQ = (1 << 0), /* shift by port # */
190 DONE_IRQ = (1 << 1), /* shift by port # */
191 HC0_IRQ_PEND = 0x1ff, /* bits 0-8 = HC0's ports */
192 HC_SHIFT = 9, /* bits 9-17 = HC1's ports */
194 TRAN_LO_DONE = (1 << 19), /* 6xxx: IRQ coalescing */
195 TRAN_HI_DONE = (1 << 20), /* 6xxx: IRQ coalescing */
196 PORTS_0_3_COAL_DONE = (1 << 8),
197 PORTS_4_7_COAL_DONE = (1 << 17),
198 PORTS_0_7_COAL_DONE = (1 << 21), /* 6xxx: IRQ coalescing */
199 GPIO_INT = (1 << 22),
200 SELF_INT = (1 << 23),
201 TWSI_INT = (1 << 24),
202 HC_MAIN_RSVD = (0x7f << 25), /* bits 31-25 */
203 HC_MAIN_RSVD_5 = (0x1fff << 19), /* bits 31-19 */
204 HC_MAIN_RSVD_SOC = (0x3fffffb << 6), /* bits 31-9, 7-6 */
206 /* SATAHC registers */
209 HC_IRQ_CAUSE_OFS = 0x14,
210 DMA_IRQ = (1 << 0), /* shift by port # */
211 HC_COAL_IRQ = (1 << 4), /* IRQ coalescing */
212 DEV_IRQ = (1 << 8), /* shift by port # */
214 /* Shadow block registers */
216 SHD_CTL_AST_OFS = 0x20, /* ofs from SHD_BLK_OFS */
219 SATA_STATUS_OFS = 0x300, /* ctrl, err regs follow status */
220 SATA_ACTIVE_OFS = 0x350,
221 SATA_FIS_IRQ_CAUSE_OFS = 0x364,
222 SATA_FIS_IRQ_AN = (1 << 9), /* async notification */
225 LTMODE_BIT8 = (1 << 8), /* unknown, but necessary */
230 SATA_IFCTL_OFS = 0x344,
231 SATA_TESTCTL_OFS = 0x348,
232 SATA_IFSTAT_OFS = 0x34c,
233 VENDOR_UNIQUE_FIS_OFS = 0x35c,
236 FISCFG_WAIT_DEV_ERR = (1 << 8), /* wait for host on DevErr */
237 FISCFG_SINGLE_SYNC = (1 << 16), /* SYNC on DMA activation */
240 MV5_LTMODE_OFS = 0x30,
241 MV5_PHY_CTL_OFS = 0x0C,
242 SATA_INTERFACE_CFG_OFS = 0x050,
244 MV_M2_PREAMP_MASK = 0x7e0,
248 EDMA_CFG_Q_DEPTH = 0x1f, /* max device queue depth */
249 EDMA_CFG_NCQ = (1 << 5), /* for R/W FPDMA queued */
250 EDMA_CFG_NCQ_GO_ON_ERR = (1 << 14), /* continue on error */
251 EDMA_CFG_RD_BRST_EXT = (1 << 11), /* read burst 512B */
252 EDMA_CFG_WR_BUFF_LEN = (1 << 13), /* write buffer 512B */
253 EDMA_CFG_EDMA_FBS = (1 << 16), /* EDMA FIS-Based Switching */
254 EDMA_CFG_FBS = (1 << 26), /* FIS-Based Switching */
256 EDMA_ERR_IRQ_CAUSE_OFS = 0x8,
257 EDMA_ERR_IRQ_MASK_OFS = 0xc,
258 EDMA_ERR_D_PAR = (1 << 0), /* UDMA data parity err */
259 EDMA_ERR_PRD_PAR = (1 << 1), /* UDMA PRD parity err */
260 EDMA_ERR_DEV = (1 << 2), /* device error */
261 EDMA_ERR_DEV_DCON = (1 << 3), /* device disconnect */
262 EDMA_ERR_DEV_CON = (1 << 4), /* device connected */
263 EDMA_ERR_SERR = (1 << 5), /* SError bits [WBDST] raised */
264 EDMA_ERR_SELF_DIS = (1 << 7), /* Gen II/IIE self-disable */
265 EDMA_ERR_SELF_DIS_5 = (1 << 8), /* Gen I self-disable */
266 EDMA_ERR_BIST_ASYNC = (1 << 8), /* BIST FIS or Async Notify */
267 EDMA_ERR_TRANS_IRQ_7 = (1 << 8), /* Gen IIE transprt layer irq */
268 EDMA_ERR_CRQB_PAR = (1 << 9), /* CRQB parity error */
269 EDMA_ERR_CRPB_PAR = (1 << 10), /* CRPB parity error */
270 EDMA_ERR_INTRL_PAR = (1 << 11), /* internal parity error */
271 EDMA_ERR_IORDY = (1 << 12), /* IORdy timeout */
273 EDMA_ERR_LNK_CTRL_RX = (0xf << 13), /* link ctrl rx error */
274 EDMA_ERR_LNK_CTRL_RX_0 = (1 << 13), /* transient: CRC err */
275 EDMA_ERR_LNK_CTRL_RX_1 = (1 << 14), /* transient: FIFO err */
276 EDMA_ERR_LNK_CTRL_RX_2 = (1 << 15), /* fatal: caught SYNC */
277 EDMA_ERR_LNK_CTRL_RX_3 = (1 << 16), /* transient: FIS rx err */
279 EDMA_ERR_LNK_DATA_RX = (0xf << 17), /* link data rx error */
281 EDMA_ERR_LNK_CTRL_TX = (0x1f << 21), /* link ctrl tx error */
282 EDMA_ERR_LNK_CTRL_TX_0 = (1 << 21), /* transient: CRC err */
283 EDMA_ERR_LNK_CTRL_TX_1 = (1 << 22), /* transient: FIFO err */
284 EDMA_ERR_LNK_CTRL_TX_2 = (1 << 23), /* transient: caught SYNC */
285 EDMA_ERR_LNK_CTRL_TX_3 = (1 << 24), /* transient: caught DMAT */
286 EDMA_ERR_LNK_CTRL_TX_4 = (1 << 25), /* transient: FIS collision */
288 EDMA_ERR_LNK_DATA_TX = (0x1f << 26), /* link data tx error */
290 EDMA_ERR_TRANS_PROTO = (1 << 31), /* transport protocol error */
291 EDMA_ERR_OVERRUN_5 = (1 << 5),
292 EDMA_ERR_UNDERRUN_5 = (1 << 6),
294 EDMA_ERR_IRQ_TRANSIENT = EDMA_ERR_LNK_CTRL_RX_0 |
295 EDMA_ERR_LNK_CTRL_RX_1 |
296 EDMA_ERR_LNK_CTRL_RX_3 |
297 EDMA_ERR_LNK_CTRL_TX,
299 EDMA_EH_FREEZE = EDMA_ERR_D_PAR |
309 EDMA_ERR_LNK_CTRL_RX_2 |
310 EDMA_ERR_LNK_DATA_RX |
311 EDMA_ERR_LNK_DATA_TX |
312 EDMA_ERR_TRANS_PROTO,
314 EDMA_EH_FREEZE_5 = EDMA_ERR_D_PAR |
319 EDMA_ERR_UNDERRUN_5 |
320 EDMA_ERR_SELF_DIS_5 |
326 EDMA_REQ_Q_BASE_HI_OFS = 0x10,
327 EDMA_REQ_Q_IN_PTR_OFS = 0x14, /* also contains BASE_LO */
329 EDMA_REQ_Q_OUT_PTR_OFS = 0x18,
330 EDMA_REQ_Q_PTR_SHIFT = 5,
332 EDMA_RSP_Q_BASE_HI_OFS = 0x1c,
333 EDMA_RSP_Q_IN_PTR_OFS = 0x20,
334 EDMA_RSP_Q_OUT_PTR_OFS = 0x24, /* also contains BASE_LO */
335 EDMA_RSP_Q_PTR_SHIFT = 3,
337 EDMA_CMD_OFS = 0x28, /* EDMA command register */
338 EDMA_EN = (1 << 0), /* enable EDMA */
339 EDMA_DS = (1 << 1), /* disable EDMA; self-negated */
340 EDMA_RESET = (1 << 2), /* reset eng/trans/link/phy */
342 EDMA_STATUS_OFS = 0x30, /* EDMA engine status */
343 EDMA_STATUS_CACHE_EMPTY = (1 << 6), /* GenIIe command cache empty */
344 EDMA_STATUS_IDLE = (1 << 7), /* GenIIe EDMA enabled/idle */
346 EDMA_IORDY_TMOUT_OFS = 0x34,
347 EDMA_ARB_CFG_OFS = 0x38,
349 EDMA_HALTCOND_OFS = 0x60, /* GenIIe halt conditions */
351 GEN_II_NCQ_MAX_SECTORS = 256, /* max sects/io on Gen2 w/NCQ */
353 /* Host private flags (hp_flags) */
354 MV_HP_FLAG_MSI = (1 << 0),
355 MV_HP_ERRATA_50XXB0 = (1 << 1),
356 MV_HP_ERRATA_50XXB2 = (1 << 2),
357 MV_HP_ERRATA_60X1B2 = (1 << 3),
358 MV_HP_ERRATA_60X1C0 = (1 << 4),
359 MV_HP_ERRATA_XX42A0 = (1 << 5),
360 MV_HP_GEN_I = (1 << 6), /* Generation I: 50xx */
361 MV_HP_GEN_II = (1 << 7), /* Generation II: 60xx */
362 MV_HP_GEN_IIE = (1 << 8), /* Generation IIE: 6042/7042 */
363 MV_HP_PCIE = (1 << 9), /* PCIe bus/regs: 7042 */
364 MV_HP_CUT_THROUGH = (1 << 10), /* can use EDMA cut-through */
366 /* Port private flags (pp_flags) */
367 MV_PP_FLAG_EDMA_EN = (1 << 0), /* is EDMA engine enabled? */
368 MV_PP_FLAG_NCQ_EN = (1 << 1), /* is EDMA set up for NCQ? */
369 MV_PP_FLAG_FBS_EN = (1 << 2), /* is EDMA set up for FBS? */
370 MV_PP_FLAG_DELAYED_EH = (1 << 3), /* delayed dev err handling */
373 #define IS_GEN_I(hpriv) ((hpriv)->hp_flags & MV_HP_GEN_I)
374 #define IS_GEN_II(hpriv) ((hpriv)->hp_flags & MV_HP_GEN_II)
375 #define IS_GEN_IIE(hpriv) ((hpriv)->hp_flags & MV_HP_GEN_IIE)
376 #define IS_PCIE(hpriv) ((hpriv)->hp_flags & MV_HP_PCIE)
377 #define HAS_PCI(host) (!((host)->ports[0]->flags & MV_FLAG_SOC))
379 #define WINDOW_CTRL(i) (0x20030 + ((i) << 4))
380 #define WINDOW_BASE(i) (0x20034 + ((i) << 4))
383 /* DMA boundary 0xffff is required by the s/g splitting
384 * we need on /length/ in mv_fill-sg().
386 MV_DMA_BOUNDARY = 0xffffU,
388 /* mask of register bits containing lower 32 bits
389 * of EDMA request queue DMA address
391 EDMA_REQ_Q_BASE_LO_MASK = 0xfffffc00U,
393 /* ditto, for response queue */
394 EDMA_RSP_Q_BASE_LO_MASK = 0xffffff00U,
408 /* Command ReQuest Block: 32B */
424 /* Command ResPonse Block: 8B */
431 /* EDMA Physical Region Descriptor (ePRD); A.K.A. SG */
439 struct mv_port_priv {
440 struct mv_crqb *crqb;
442 struct mv_crpb *crpb;
444 struct mv_sg *sg_tbl[MV_MAX_Q_DEPTH];
445 dma_addr_t sg_tbl_dma[MV_MAX_Q_DEPTH];
447 unsigned int req_idx;
448 unsigned int resp_idx;
451 unsigned int delayed_eh_pmp_map;
454 struct mv_port_signal {
459 struct mv_host_priv {
461 struct mv_port_signal signal[8];
462 const struct mv_hw_ops *ops;
465 void __iomem *main_irq_cause_addr;
466 void __iomem *main_irq_mask_addr;
471 * These consistent DMA memory pools give us guaranteed
472 * alignment for hardware-accessed data structures,
473 * and less memory waste in accomplishing the alignment.
475 struct dma_pool *crqb_pool;
476 struct dma_pool *crpb_pool;
477 struct dma_pool *sg_tbl_pool;
481 void (*phy_errata)(struct mv_host_priv *hpriv, void __iomem *mmio,
483 void (*enable_leds)(struct mv_host_priv *hpriv, void __iomem *mmio);
484 void (*read_preamp)(struct mv_host_priv *hpriv, int idx,
486 int (*reset_hc)(struct mv_host_priv *hpriv, void __iomem *mmio,
488 void (*reset_flash)(struct mv_host_priv *hpriv, void __iomem *mmio);
489 void (*reset_bus)(struct ata_host *host, void __iomem *mmio);
492 static int mv_scr_read(struct ata_port *ap, unsigned int sc_reg_in, u32 *val);
493 static int mv_scr_write(struct ata_port *ap, unsigned int sc_reg_in, u32 val);
494 static int mv5_scr_read(struct ata_port *ap, unsigned int sc_reg_in, u32 *val);
495 static int mv5_scr_write(struct ata_port *ap, unsigned int sc_reg_in, u32 val);
496 static int mv_port_start(struct ata_port *ap);
497 static void mv_port_stop(struct ata_port *ap);
498 static int mv_qc_defer(struct ata_queued_cmd *qc);
499 static void mv_qc_prep(struct ata_queued_cmd *qc);
500 static void mv_qc_prep_iie(struct ata_queued_cmd *qc);
501 static unsigned int mv_qc_issue(struct ata_queued_cmd *qc);
502 static int mv_hardreset(struct ata_link *link, unsigned int *class,
503 unsigned long deadline);
504 static void mv_eh_freeze(struct ata_port *ap);
505 static void mv_eh_thaw(struct ata_port *ap);
506 static void mv6_dev_config(struct ata_device *dev);
508 static void mv5_phy_errata(struct mv_host_priv *hpriv, void __iomem *mmio,
510 static void mv5_enable_leds(struct mv_host_priv *hpriv, void __iomem *mmio);
511 static void mv5_read_preamp(struct mv_host_priv *hpriv, int idx,
513 static int mv5_reset_hc(struct mv_host_priv *hpriv, void __iomem *mmio,
515 static void mv5_reset_flash(struct mv_host_priv *hpriv, void __iomem *mmio);
516 static void mv5_reset_bus(struct ata_host *host, void __iomem *mmio);
518 static void mv6_phy_errata(struct mv_host_priv *hpriv, void __iomem *mmio,
520 static void mv6_enable_leds(struct mv_host_priv *hpriv, void __iomem *mmio);
521 static void mv6_read_preamp(struct mv_host_priv *hpriv, int idx,
523 static int mv6_reset_hc(struct mv_host_priv *hpriv, void __iomem *mmio,
525 static void mv6_reset_flash(struct mv_host_priv *hpriv, void __iomem *mmio);
526 static void mv_soc_enable_leds(struct mv_host_priv *hpriv,
528 static void mv_soc_read_preamp(struct mv_host_priv *hpriv, int idx,
530 static int mv_soc_reset_hc(struct mv_host_priv *hpriv,
531 void __iomem *mmio, unsigned int n_hc);
532 static void mv_soc_reset_flash(struct mv_host_priv *hpriv,
534 static void mv_soc_reset_bus(struct ata_host *host, void __iomem *mmio);
535 static void mv_reset_pci_bus(struct ata_host *host, void __iomem *mmio);
536 static void mv_reset_channel(struct mv_host_priv *hpriv, void __iomem *mmio,
537 unsigned int port_no);
538 static int mv_stop_edma(struct ata_port *ap);
539 static int mv_stop_edma_engine(void __iomem *port_mmio);
540 static void mv_edma_cfg(struct ata_port *ap, int want_ncq);
542 static void mv_pmp_select(struct ata_port *ap, int pmp);
543 static int mv_pmp_hardreset(struct ata_link *link, unsigned int *class,
544 unsigned long deadline);
545 static int mv_softreset(struct ata_link *link, unsigned int *class,
546 unsigned long deadline);
547 static void mv_pmp_error_handler(struct ata_port *ap);
548 static void mv_process_crpb_entries(struct ata_port *ap,
549 struct mv_port_priv *pp);
551 /* .sg_tablesize is (MV_MAX_SG_CT / 2) in the structures below
552 * because we have to allow room for worst case splitting of
553 * PRDs for 64K boundaries in mv_fill_sg().
555 static struct scsi_host_template mv5_sht = {
556 ATA_BASE_SHT(DRV_NAME),
557 .sg_tablesize = MV_MAX_SG_CT / 2,
558 .dma_boundary = MV_DMA_BOUNDARY,
561 static struct scsi_host_template mv6_sht = {
562 ATA_NCQ_SHT(DRV_NAME),
563 .can_queue = MV_MAX_Q_DEPTH - 1,
564 .sg_tablesize = MV_MAX_SG_CT / 2,
565 .dma_boundary = MV_DMA_BOUNDARY,
568 static struct ata_port_operations mv5_ops = {
569 .inherits = &ata_sff_port_ops,
571 .qc_defer = mv_qc_defer,
572 .qc_prep = mv_qc_prep,
573 .qc_issue = mv_qc_issue,
575 .freeze = mv_eh_freeze,
577 .hardreset = mv_hardreset,
578 .error_handler = ata_std_error_handler, /* avoid SFF EH */
579 .post_internal_cmd = ATA_OP_NULL,
581 .scr_read = mv5_scr_read,
582 .scr_write = mv5_scr_write,
584 .port_start = mv_port_start,
585 .port_stop = mv_port_stop,
588 static struct ata_port_operations mv6_ops = {
589 .inherits = &mv5_ops,
590 .dev_config = mv6_dev_config,
591 .scr_read = mv_scr_read,
592 .scr_write = mv_scr_write,
594 .pmp_hardreset = mv_pmp_hardreset,
595 .pmp_softreset = mv_softreset,
596 .softreset = mv_softreset,
597 .error_handler = mv_pmp_error_handler,
600 static struct ata_port_operations mv_iie_ops = {
601 .inherits = &mv6_ops,
602 .dev_config = ATA_OP_NULL,
603 .qc_prep = mv_qc_prep_iie,
606 static const struct ata_port_info mv_port_info[] = {
608 .flags = MV_COMMON_FLAGS,
609 .pio_mask = 0x1f, /* pio0-4 */
610 .udma_mask = ATA_UDMA6,
611 .port_ops = &mv5_ops,
614 .flags = MV_COMMON_FLAGS | MV_FLAG_DUAL_HC,
615 .pio_mask = 0x1f, /* pio0-4 */
616 .udma_mask = ATA_UDMA6,
617 .port_ops = &mv5_ops,
620 .flags = MV_COMMON_FLAGS | MV_FLAG_DUAL_HC,
621 .pio_mask = 0x1f, /* pio0-4 */
622 .udma_mask = ATA_UDMA6,
623 .port_ops = &mv5_ops,
626 .flags = MV_COMMON_FLAGS | MV_6XXX_FLAGS |
627 ATA_FLAG_PMP | ATA_FLAG_ACPI_SATA |
629 .pio_mask = 0x1f, /* pio0-4 */
630 .udma_mask = ATA_UDMA6,
631 .port_ops = &mv6_ops,
634 .flags = MV_COMMON_FLAGS | MV_6XXX_FLAGS |
635 ATA_FLAG_PMP | ATA_FLAG_ACPI_SATA |
636 ATA_FLAG_NCQ | MV_FLAG_DUAL_HC,
637 .pio_mask = 0x1f, /* pio0-4 */
638 .udma_mask = ATA_UDMA6,
639 .port_ops = &mv6_ops,
642 .flags = MV_GENIIE_FLAGS,
643 .pio_mask = 0x1f, /* pio0-4 */
644 .udma_mask = ATA_UDMA6,
645 .port_ops = &mv_iie_ops,
648 .flags = MV_GENIIE_FLAGS,
649 .pio_mask = 0x1f, /* pio0-4 */
650 .udma_mask = ATA_UDMA6,
651 .port_ops = &mv_iie_ops,
654 .flags = MV_GENIIE_FLAGS | MV_FLAG_SOC,
655 .pio_mask = 0x1f, /* pio0-4 */
656 .udma_mask = ATA_UDMA6,
657 .port_ops = &mv_iie_ops,
661 static const struct pci_device_id mv_pci_tbl[] = {
662 { PCI_VDEVICE(MARVELL, 0x5040), chip_504x },
663 { PCI_VDEVICE(MARVELL, 0x5041), chip_504x },
664 { PCI_VDEVICE(MARVELL, 0x5080), chip_5080 },
665 { PCI_VDEVICE(MARVELL, 0x5081), chip_508x },
666 /* RocketRAID 1740/174x have different identifiers */
667 { PCI_VDEVICE(TTI, 0x1740), chip_508x },
668 { PCI_VDEVICE(TTI, 0x1742), chip_508x },
670 { PCI_VDEVICE(MARVELL, 0x6040), chip_604x },
671 { PCI_VDEVICE(MARVELL, 0x6041), chip_604x },
672 { PCI_VDEVICE(MARVELL, 0x6042), chip_6042 },
673 { PCI_VDEVICE(MARVELL, 0x6080), chip_608x },
674 { PCI_VDEVICE(MARVELL, 0x6081), chip_608x },
676 { PCI_VDEVICE(ADAPTEC2, 0x0241), chip_604x },
679 { PCI_VDEVICE(ADAPTEC2, 0x0243), chip_7042 },
681 /* Marvell 7042 support */
682 { PCI_VDEVICE(MARVELL, 0x7042), chip_7042 },
684 /* Highpoint RocketRAID PCIe series */
685 { PCI_VDEVICE(TTI, 0x2300), chip_7042 },
686 { PCI_VDEVICE(TTI, 0x2310), chip_7042 },
688 { } /* terminate list */
691 static const struct mv_hw_ops mv5xxx_ops = {
692 .phy_errata = mv5_phy_errata,
693 .enable_leds = mv5_enable_leds,
694 .read_preamp = mv5_read_preamp,
695 .reset_hc = mv5_reset_hc,
696 .reset_flash = mv5_reset_flash,
697 .reset_bus = mv5_reset_bus,
700 static const struct mv_hw_ops mv6xxx_ops = {
701 .phy_errata = mv6_phy_errata,
702 .enable_leds = mv6_enable_leds,
703 .read_preamp = mv6_read_preamp,
704 .reset_hc = mv6_reset_hc,
705 .reset_flash = mv6_reset_flash,
706 .reset_bus = mv_reset_pci_bus,
709 static const struct mv_hw_ops mv_soc_ops = {
710 .phy_errata = mv6_phy_errata,
711 .enable_leds = mv_soc_enable_leds,
712 .read_preamp = mv_soc_read_preamp,
713 .reset_hc = mv_soc_reset_hc,
714 .reset_flash = mv_soc_reset_flash,
715 .reset_bus = mv_soc_reset_bus,
722 static inline void writelfl(unsigned long data, void __iomem *addr)
725 (void) readl(addr); /* flush to avoid PCI posted write */
728 static inline unsigned int mv_hc_from_port(unsigned int port)
730 return port >> MV_PORT_HC_SHIFT;
733 static inline unsigned int mv_hardport_from_port(unsigned int port)
735 return port & MV_PORT_MASK;
739 * Consolidate some rather tricky bit shift calculations.
740 * This is hot-path stuff, so not a function.
741 * Simple code, with two return values, so macro rather than inline.
743 * port is the sole input, in range 0..7.
744 * shift is one output, for use with main_irq_cause / main_irq_mask registers.
745 * hardport is the other output, in range 0..3.
747 * Note that port and hardport may be the same variable in some cases.
749 #define MV_PORT_TO_SHIFT_AND_HARDPORT(port, shift, hardport) \
751 shift = mv_hc_from_port(port) * HC_SHIFT; \
752 hardport = mv_hardport_from_port(port); \
753 shift += hardport * 2; \
756 static inline void __iomem *mv_hc_base(void __iomem *base, unsigned int hc)
758 return (base + MV_SATAHC0_REG_BASE + (hc * MV_SATAHC_REG_SZ));
761 static inline void __iomem *mv_hc_base_from_port(void __iomem *base,
764 return mv_hc_base(base, mv_hc_from_port(port));
767 static inline void __iomem *mv_port_base(void __iomem *base, unsigned int port)
769 return mv_hc_base_from_port(base, port) +
770 MV_SATAHC_ARBTR_REG_SZ +
771 (mv_hardport_from_port(port) * MV_PORT_REG_SZ);
774 static void __iomem *mv5_phy_base(void __iomem *mmio, unsigned int port)
776 void __iomem *hc_mmio = mv_hc_base_from_port(mmio, port);
777 unsigned long ofs = (mv_hardport_from_port(port) + 1) * 0x100UL;
779 return hc_mmio + ofs;
782 static inline void __iomem *mv_host_base(struct ata_host *host)
784 struct mv_host_priv *hpriv = host->private_data;
788 static inline void __iomem *mv_ap_base(struct ata_port *ap)
790 return mv_port_base(mv_host_base(ap->host), ap->port_no);
793 static inline int mv_get_hc_count(unsigned long port_flags)
795 return ((port_flags & MV_FLAG_DUAL_HC) ? 2 : 1);
798 static void mv_set_edma_ptrs(void __iomem *port_mmio,
799 struct mv_host_priv *hpriv,
800 struct mv_port_priv *pp)
805 * initialize request queue
807 pp->req_idx &= MV_MAX_Q_DEPTH_MASK; /* paranoia */
808 index = pp->req_idx << EDMA_REQ_Q_PTR_SHIFT;
810 WARN_ON(pp->crqb_dma & 0x3ff);
811 writel((pp->crqb_dma >> 16) >> 16, port_mmio + EDMA_REQ_Q_BASE_HI_OFS);
812 writelfl((pp->crqb_dma & EDMA_REQ_Q_BASE_LO_MASK) | index,
813 port_mmio + EDMA_REQ_Q_IN_PTR_OFS);
815 if (hpriv->hp_flags & MV_HP_ERRATA_XX42A0)
816 writelfl((pp->crqb_dma & 0xffffffff) | index,
817 port_mmio + EDMA_REQ_Q_OUT_PTR_OFS);
819 writelfl(index, port_mmio + EDMA_REQ_Q_OUT_PTR_OFS);
822 * initialize response queue
824 pp->resp_idx &= MV_MAX_Q_DEPTH_MASK; /* paranoia */
825 index = pp->resp_idx << EDMA_RSP_Q_PTR_SHIFT;
827 WARN_ON(pp->crpb_dma & 0xff);
828 writel((pp->crpb_dma >> 16) >> 16, port_mmio + EDMA_RSP_Q_BASE_HI_OFS);
830 if (hpriv->hp_flags & MV_HP_ERRATA_XX42A0)
831 writelfl((pp->crpb_dma & 0xffffffff) | index,
832 port_mmio + EDMA_RSP_Q_IN_PTR_OFS);
834 writelfl(index, port_mmio + EDMA_RSP_Q_IN_PTR_OFS);
836 writelfl((pp->crpb_dma & EDMA_RSP_Q_BASE_LO_MASK) | index,
837 port_mmio + EDMA_RSP_Q_OUT_PTR_OFS);
841 * mv_start_dma - Enable eDMA engine
842 * @base: port base address
843 * @pp: port private data
845 * Verify the local cache of the eDMA state is accurate with a
849 * Inherited from caller.
851 static void mv_start_dma(struct ata_port *ap, void __iomem *port_mmio,
852 struct mv_port_priv *pp, u8 protocol)
854 int want_ncq = (protocol == ATA_PROT_NCQ);
856 if (pp->pp_flags & MV_PP_FLAG_EDMA_EN) {
857 int using_ncq = ((pp->pp_flags & MV_PP_FLAG_NCQ_EN) != 0);
858 if (want_ncq != using_ncq)
861 if (!(pp->pp_flags & MV_PP_FLAG_EDMA_EN)) {
862 struct mv_host_priv *hpriv = ap->host->private_data;
863 int hardport = mv_hardport_from_port(ap->port_no);
864 void __iomem *hc_mmio = mv_hc_base_from_port(
865 mv_host_base(ap->host), hardport);
866 u32 hc_irq_cause, ipending;
868 /* clear EDMA event indicators, if any */
869 writelfl(0, port_mmio + EDMA_ERR_IRQ_CAUSE_OFS);
871 /* clear EDMA interrupt indicator, if any */
872 hc_irq_cause = readl(hc_mmio + HC_IRQ_CAUSE_OFS);
873 ipending = (DEV_IRQ | DMA_IRQ) << hardport;
874 if (hc_irq_cause & ipending) {
875 writelfl(hc_irq_cause & ~ipending,
876 hc_mmio + HC_IRQ_CAUSE_OFS);
879 mv_edma_cfg(ap, want_ncq);
881 /* clear FIS IRQ Cause */
882 if (IS_GEN_IIE(hpriv))
883 writelfl(0, port_mmio + SATA_FIS_IRQ_CAUSE_OFS);
885 mv_set_edma_ptrs(port_mmio, hpriv, pp);
887 writelfl(EDMA_EN, port_mmio + EDMA_CMD_OFS);
888 pp->pp_flags |= MV_PP_FLAG_EDMA_EN;
892 static void mv_wait_for_edma_empty_idle(struct ata_port *ap)
894 void __iomem *port_mmio = mv_ap_base(ap);
895 const u32 empty_idle = (EDMA_STATUS_CACHE_EMPTY | EDMA_STATUS_IDLE);
896 const int per_loop = 5, timeout = (15 * 1000 / per_loop);
900 * Wait for the EDMA engine to finish transactions in progress.
901 * No idea what a good "timeout" value might be, but measurements
902 * indicate that it often requires hundreds of microseconds
903 * with two drives in-use. So we use the 15msec value above
904 * as a rough guess at what even more drives might require.
906 for (i = 0; i < timeout; ++i) {
907 u32 edma_stat = readl(port_mmio + EDMA_STATUS_OFS);
908 if ((edma_stat & empty_idle) == empty_idle)
912 /* ata_port_printk(ap, KERN_INFO, "%s: %u+ usecs\n", __func__, i); */
916 * mv_stop_edma_engine - Disable eDMA engine
917 * @port_mmio: io base address
920 * Inherited from caller.
922 static int mv_stop_edma_engine(void __iomem *port_mmio)
926 /* Disable eDMA. The disable bit auto clears. */
927 writelfl(EDMA_DS, port_mmio + EDMA_CMD_OFS);
929 /* Wait for the chip to confirm eDMA is off. */
930 for (i = 10000; i > 0; i--) {
931 u32 reg = readl(port_mmio + EDMA_CMD_OFS);
932 if (!(reg & EDMA_EN))
939 static int mv_stop_edma(struct ata_port *ap)
941 void __iomem *port_mmio = mv_ap_base(ap);
942 struct mv_port_priv *pp = ap->private_data;
944 if (!(pp->pp_flags & MV_PP_FLAG_EDMA_EN))
946 pp->pp_flags &= ~MV_PP_FLAG_EDMA_EN;
947 mv_wait_for_edma_empty_idle(ap);
948 if (mv_stop_edma_engine(port_mmio)) {
949 ata_port_printk(ap, KERN_ERR, "Unable to stop eDMA\n");
956 static void mv_dump_mem(void __iomem *start, unsigned bytes)
959 for (b = 0; b < bytes; ) {
960 DPRINTK("%p: ", start + b);
961 for (w = 0; b < bytes && w < 4; w++) {
962 printk("%08x ", readl(start + b));
970 static void mv_dump_pci_cfg(struct pci_dev *pdev, unsigned bytes)
975 for (b = 0; b < bytes; ) {
976 DPRINTK("%02x: ", b);
977 for (w = 0; b < bytes && w < 4; w++) {
978 (void) pci_read_config_dword(pdev, b, &dw);
986 static void mv_dump_all_regs(void __iomem *mmio_base, int port,
987 struct pci_dev *pdev)
990 void __iomem *hc_base = mv_hc_base(mmio_base,
991 port >> MV_PORT_HC_SHIFT);
992 void __iomem *port_base;
993 int start_port, num_ports, p, start_hc, num_hcs, hc;
996 start_hc = start_port = 0;
997 num_ports = 8; /* shld be benign for 4 port devs */
1000 start_hc = port >> MV_PORT_HC_SHIFT;
1002 num_ports = num_hcs = 1;
1004 DPRINTK("All registers for port(s) %u-%u:\n", start_port,
1005 num_ports > 1 ? num_ports - 1 : start_port);
1008 DPRINTK("PCI config space regs:\n");
1009 mv_dump_pci_cfg(pdev, 0x68);
1011 DPRINTK("PCI regs:\n");
1012 mv_dump_mem(mmio_base+0xc00, 0x3c);
1013 mv_dump_mem(mmio_base+0xd00, 0x34);
1014 mv_dump_mem(mmio_base+0xf00, 0x4);
1015 mv_dump_mem(mmio_base+0x1d00, 0x6c);
1016 for (hc = start_hc; hc < start_hc + num_hcs; hc++) {
1017 hc_base = mv_hc_base(mmio_base, hc);
1018 DPRINTK("HC regs (HC %i):\n", hc);
1019 mv_dump_mem(hc_base, 0x1c);
1021 for (p = start_port; p < start_port + num_ports; p++) {
1022 port_base = mv_port_base(mmio_base, p);
1023 DPRINTK("EDMA regs (port %i):\n", p);
1024 mv_dump_mem(port_base, 0x54);
1025 DPRINTK("SATA regs (port %i):\n", p);
1026 mv_dump_mem(port_base+0x300, 0x60);
1031 static unsigned int mv_scr_offset(unsigned int sc_reg_in)
1035 switch (sc_reg_in) {
1039 ofs = SATA_STATUS_OFS + (sc_reg_in * sizeof(u32));
1042 ofs = SATA_ACTIVE_OFS; /* active is not with the others */
1051 static int mv_scr_read(struct ata_port *ap, unsigned int sc_reg_in, u32 *val)
1053 unsigned int ofs = mv_scr_offset(sc_reg_in);
1055 if (ofs != 0xffffffffU) {
1056 *val = readl(mv_ap_base(ap) + ofs);
1062 static int mv_scr_write(struct ata_port *ap, unsigned int sc_reg_in, u32 val)
1064 unsigned int ofs = mv_scr_offset(sc_reg_in);
1066 if (ofs != 0xffffffffU) {
1067 writelfl(val, mv_ap_base(ap) + ofs);
1073 static void mv6_dev_config(struct ata_device *adev)
1076 * Deal with Gen-II ("mv6") hardware quirks/restrictions:
1078 * Gen-II does not support NCQ over a port multiplier
1079 * (no FIS-based switching).
1081 * We don't have hob_nsect when doing NCQ commands on Gen-II.
1082 * See mv_qc_prep() for more info.
1084 if (adev->flags & ATA_DFLAG_NCQ) {
1085 if (sata_pmp_attached(adev->link->ap)) {
1086 adev->flags &= ~ATA_DFLAG_NCQ;
1087 ata_dev_printk(adev, KERN_INFO,
1088 "NCQ disabled for command-based switching\n");
1089 } else if (adev->max_sectors > GEN_II_NCQ_MAX_SECTORS) {
1090 adev->max_sectors = GEN_II_NCQ_MAX_SECTORS;
1091 ata_dev_printk(adev, KERN_INFO,
1092 "max_sectors limited to %u for NCQ\n",
1098 static int mv_qc_defer(struct ata_queued_cmd *qc)
1100 struct ata_link *link = qc->dev->link;
1101 struct ata_port *ap = link->ap;
1102 struct mv_port_priv *pp = ap->private_data;
1105 * Don't allow new commands if we're in a delayed EH state
1106 * for NCQ and/or FIS-based switching.
1108 if (pp->pp_flags & MV_PP_FLAG_DELAYED_EH)
1109 return ATA_DEFER_PORT;
1111 * If the port is completely idle, then allow the new qc.
1113 if (ap->nr_active_links == 0)
1116 if (pp->pp_flags & MV_PP_FLAG_EDMA_EN) {
1118 * The port is operating in host queuing mode (EDMA).
1119 * It can accomodate a new qc if the qc protocol
1120 * is compatible with the current host queue mode.
1122 if (pp->pp_flags & MV_PP_FLAG_NCQ_EN) {
1124 * The host queue (EDMA) is in NCQ mode.
1125 * If the new qc is also an NCQ command,
1126 * then allow the new qc.
1128 if (qc->tf.protocol == ATA_PROT_NCQ)
1132 * The host queue (EDMA) is in non-NCQ, DMA mode.
1133 * If the new qc is also a non-NCQ, DMA command,
1134 * then allow the new qc.
1136 if (qc->tf.protocol == ATA_PROT_DMA)
1140 return ATA_DEFER_PORT;
1143 static void mv_config_fbs(void __iomem *port_mmio, int want_ncq, int want_fbs)
1145 u32 new_fiscfg, old_fiscfg;
1146 u32 new_ltmode, old_ltmode;
1147 u32 new_haltcond, old_haltcond;
1149 old_fiscfg = readl(port_mmio + FISCFG_OFS);
1150 old_ltmode = readl(port_mmio + LTMODE_OFS);
1151 old_haltcond = readl(port_mmio + EDMA_HALTCOND_OFS);
1153 new_fiscfg = old_fiscfg & ~(FISCFG_SINGLE_SYNC | FISCFG_WAIT_DEV_ERR);
1154 new_ltmode = old_ltmode & ~LTMODE_BIT8;
1155 new_haltcond = old_haltcond | EDMA_ERR_DEV;
1158 new_fiscfg = old_fiscfg | FISCFG_SINGLE_SYNC;
1159 new_ltmode = old_ltmode | LTMODE_BIT8;
1161 new_haltcond &= ~EDMA_ERR_DEV;
1163 new_fiscfg |= FISCFG_WAIT_DEV_ERR;
1166 if (new_fiscfg != old_fiscfg)
1167 writelfl(new_fiscfg, port_mmio + FISCFG_OFS);
1168 if (new_ltmode != old_ltmode)
1169 writelfl(new_ltmode, port_mmio + LTMODE_OFS);
1170 if (new_haltcond != old_haltcond)
1171 writelfl(new_haltcond, port_mmio + EDMA_HALTCOND_OFS);
1174 static void mv_60x1_errata_sata25(struct ata_port *ap, int want_ncq)
1176 struct mv_host_priv *hpriv = ap->host->private_data;
1179 /* workaround for 88SX60x1 FEr SATA#25 (part 1) */
1180 old = readl(hpriv->base + MV_GPIO_PORT_CTL_OFS);
1182 new = old | (1 << 22);
1184 new = old & ~(1 << 22);
1186 writel(new, hpriv->base + MV_GPIO_PORT_CTL_OFS);
1189 static void mv_edma_cfg(struct ata_port *ap, int want_ncq)
1192 struct mv_port_priv *pp = ap->private_data;
1193 struct mv_host_priv *hpriv = ap->host->private_data;
1194 void __iomem *port_mmio = mv_ap_base(ap);
1196 /* set up non-NCQ EDMA configuration */
1197 cfg = EDMA_CFG_Q_DEPTH; /* always 0x1f for *all* chips */
1198 pp->pp_flags &= ~MV_PP_FLAG_FBS_EN;
1200 if (IS_GEN_I(hpriv))
1201 cfg |= (1 << 8); /* enab config burst size mask */
1203 else if (IS_GEN_II(hpriv)) {
1204 cfg |= EDMA_CFG_RD_BRST_EXT | EDMA_CFG_WR_BUFF_LEN;
1205 mv_60x1_errata_sata25(ap, want_ncq);
1207 } else if (IS_GEN_IIE(hpriv)) {
1208 int want_fbs = sata_pmp_attached(ap);
1210 * Possible future enhancement:
1212 * The chip can use FBS with non-NCQ, if we allow it,
1213 * But first we need to have the error handling in place
1214 * for this mode (datasheet section 7.3.15.4.2.3).
1215 * So disallow non-NCQ FBS for now.
1217 want_fbs &= want_ncq;
1219 mv_config_fbs(port_mmio, want_ncq, want_fbs);
1222 pp->pp_flags |= MV_PP_FLAG_FBS_EN;
1223 cfg |= EDMA_CFG_EDMA_FBS; /* FIS-based switching */
1226 cfg |= (1 << 23); /* do not mask PM field in rx'd FIS */
1227 cfg |= (1 << 22); /* enab 4-entry host queue cache */
1228 if (HAS_PCI(ap->host))
1229 cfg |= (1 << 18); /* enab early completion */
1230 if (hpriv->hp_flags & MV_HP_CUT_THROUGH)
1231 cfg |= (1 << 17); /* enab cut-thru (dis stor&forwrd) */
1235 cfg |= EDMA_CFG_NCQ;
1236 pp->pp_flags |= MV_PP_FLAG_NCQ_EN;
1238 pp->pp_flags &= ~MV_PP_FLAG_NCQ_EN;
1240 writelfl(cfg, port_mmio + EDMA_CFG_OFS);
1243 static void mv_port_free_dma_mem(struct ata_port *ap)
1245 struct mv_host_priv *hpriv = ap->host->private_data;
1246 struct mv_port_priv *pp = ap->private_data;
1250 dma_pool_free(hpriv->crqb_pool, pp->crqb, pp->crqb_dma);
1254 dma_pool_free(hpriv->crpb_pool, pp->crpb, pp->crpb_dma);
1258 * For GEN_I, there's no NCQ, so we have only a single sg_tbl.
1259 * For later hardware, we have one unique sg_tbl per NCQ tag.
1261 for (tag = 0; tag < MV_MAX_Q_DEPTH; ++tag) {
1262 if (pp->sg_tbl[tag]) {
1263 if (tag == 0 || !IS_GEN_I(hpriv))
1264 dma_pool_free(hpriv->sg_tbl_pool,
1266 pp->sg_tbl_dma[tag]);
1267 pp->sg_tbl[tag] = NULL;
1273 * mv_port_start - Port specific init/start routine.
1274 * @ap: ATA channel to manipulate
1276 * Allocate and point to DMA memory, init port private memory,
1280 * Inherited from caller.
1282 static int mv_port_start(struct ata_port *ap)
1284 struct device *dev = ap->host->dev;
1285 struct mv_host_priv *hpriv = ap->host->private_data;
1286 struct mv_port_priv *pp;
1289 pp = devm_kzalloc(dev, sizeof(*pp), GFP_KERNEL);
1292 ap->private_data = pp;
1294 pp->crqb = dma_pool_alloc(hpriv->crqb_pool, GFP_KERNEL, &pp->crqb_dma);
1297 memset(pp->crqb, 0, MV_CRQB_Q_SZ);
1299 pp->crpb = dma_pool_alloc(hpriv->crpb_pool, GFP_KERNEL, &pp->crpb_dma);
1301 goto out_port_free_dma_mem;
1302 memset(pp->crpb, 0, MV_CRPB_Q_SZ);
1305 * For GEN_I, there's no NCQ, so we only allocate a single sg_tbl.
1306 * For later hardware, we need one unique sg_tbl per NCQ tag.
1308 for (tag = 0; tag < MV_MAX_Q_DEPTH; ++tag) {
1309 if (tag == 0 || !IS_GEN_I(hpriv)) {
1310 pp->sg_tbl[tag] = dma_pool_alloc(hpriv->sg_tbl_pool,
1311 GFP_KERNEL, &pp->sg_tbl_dma[tag]);
1312 if (!pp->sg_tbl[tag])
1313 goto out_port_free_dma_mem;
1315 pp->sg_tbl[tag] = pp->sg_tbl[0];
1316 pp->sg_tbl_dma[tag] = pp->sg_tbl_dma[0];
1321 out_port_free_dma_mem:
1322 mv_port_free_dma_mem(ap);
1327 * mv_port_stop - Port specific cleanup/stop routine.
1328 * @ap: ATA channel to manipulate
1330 * Stop DMA, cleanup port memory.
1333 * This routine uses the host lock to protect the DMA stop.
1335 static void mv_port_stop(struct ata_port *ap)
1338 mv_port_free_dma_mem(ap);
1342 * mv_fill_sg - Fill out the Marvell ePRD (scatter gather) entries
1343 * @qc: queued command whose SG list to source from
1345 * Populate the SG list and mark the last entry.
1348 * Inherited from caller.
1350 static void mv_fill_sg(struct ata_queued_cmd *qc)
1352 struct mv_port_priv *pp = qc->ap->private_data;
1353 struct scatterlist *sg;
1354 struct mv_sg *mv_sg, *last_sg = NULL;
1357 mv_sg = pp->sg_tbl[qc->tag];
1358 for_each_sg(qc->sg, sg, qc->n_elem, si) {
1359 dma_addr_t addr = sg_dma_address(sg);
1360 u32 sg_len = sg_dma_len(sg);
1363 u32 offset = addr & 0xffff;
1366 if ((offset + sg_len > 0x10000))
1367 len = 0x10000 - offset;
1369 mv_sg->addr = cpu_to_le32(addr & 0xffffffff);
1370 mv_sg->addr_hi = cpu_to_le32((addr >> 16) >> 16);
1371 mv_sg->flags_size = cpu_to_le32(len & 0xffff);
1381 if (likely(last_sg))
1382 last_sg->flags_size |= cpu_to_le32(EPRD_FLAG_END_OF_TBL);
1385 static void mv_crqb_pack_cmd(__le16 *cmdw, u8 data, u8 addr, unsigned last)
1387 u16 tmp = data | (addr << CRQB_CMD_ADDR_SHIFT) | CRQB_CMD_CS |
1388 (last ? CRQB_CMD_LAST : 0);
1389 *cmdw = cpu_to_le16(tmp);
1393 * mv_qc_prep - Host specific command preparation.
1394 * @qc: queued command to prepare
1396 * This routine simply redirects to the general purpose routine
1397 * if command is not DMA. Else, it handles prep of the CRQB
1398 * (command request block), does some sanity checking, and calls
1399 * the SG load routine.
1402 * Inherited from caller.
1404 static void mv_qc_prep(struct ata_queued_cmd *qc)
1406 struct ata_port *ap = qc->ap;
1407 struct mv_port_priv *pp = ap->private_data;
1409 struct ata_taskfile *tf;
1413 if ((qc->tf.protocol != ATA_PROT_DMA) &&
1414 (qc->tf.protocol != ATA_PROT_NCQ))
1417 /* Fill in command request block
1419 if (!(qc->tf.flags & ATA_TFLAG_WRITE))
1420 flags |= CRQB_FLAG_READ;
1421 WARN_ON(MV_MAX_Q_DEPTH <= qc->tag);
1422 flags |= qc->tag << CRQB_TAG_SHIFT;
1423 flags |= (qc->dev->link->pmp & 0xf) << CRQB_PMP_SHIFT;
1425 /* get current queue index from software */
1426 in_index = pp->req_idx;
1428 pp->crqb[in_index].sg_addr =
1429 cpu_to_le32(pp->sg_tbl_dma[qc->tag] & 0xffffffff);
1430 pp->crqb[in_index].sg_addr_hi =
1431 cpu_to_le32((pp->sg_tbl_dma[qc->tag] >> 16) >> 16);
1432 pp->crqb[in_index].ctrl_flags = cpu_to_le16(flags);
1434 cw = &pp->crqb[in_index].ata_cmd[0];
1437 /* Sadly, the CRQB cannot accomodate all registers--there are
1438 * only 11 bytes...so we must pick and choose required
1439 * registers based on the command. So, we drop feature and
1440 * hob_feature for [RW] DMA commands, but they are needed for
1441 * NCQ. NCQ will drop hob_nsect.
1443 switch (tf->command) {
1445 case ATA_CMD_READ_EXT:
1447 case ATA_CMD_WRITE_EXT:
1448 case ATA_CMD_WRITE_FUA_EXT:
1449 mv_crqb_pack_cmd(cw++, tf->hob_nsect, ATA_REG_NSECT, 0);
1451 case ATA_CMD_FPDMA_READ:
1452 case ATA_CMD_FPDMA_WRITE:
1453 mv_crqb_pack_cmd(cw++, tf->hob_feature, ATA_REG_FEATURE, 0);
1454 mv_crqb_pack_cmd(cw++, tf->feature, ATA_REG_FEATURE, 0);
1457 /* The only other commands EDMA supports in non-queued and
1458 * non-NCQ mode are: [RW] STREAM DMA and W DMA FUA EXT, none
1459 * of which are defined/used by Linux. If we get here, this
1460 * driver needs work.
1462 * FIXME: modify libata to give qc_prep a return value and
1463 * return error here.
1465 BUG_ON(tf->command);
1468 mv_crqb_pack_cmd(cw++, tf->nsect, ATA_REG_NSECT, 0);
1469 mv_crqb_pack_cmd(cw++, tf->hob_lbal, ATA_REG_LBAL, 0);
1470 mv_crqb_pack_cmd(cw++, tf->lbal, ATA_REG_LBAL, 0);
1471 mv_crqb_pack_cmd(cw++, tf->hob_lbam, ATA_REG_LBAM, 0);
1472 mv_crqb_pack_cmd(cw++, tf->lbam, ATA_REG_LBAM, 0);
1473 mv_crqb_pack_cmd(cw++, tf->hob_lbah, ATA_REG_LBAH, 0);
1474 mv_crqb_pack_cmd(cw++, tf->lbah, ATA_REG_LBAH, 0);
1475 mv_crqb_pack_cmd(cw++, tf->device, ATA_REG_DEVICE, 0);
1476 mv_crqb_pack_cmd(cw++, tf->command, ATA_REG_CMD, 1); /* last */
1478 if (!(qc->flags & ATA_QCFLAG_DMAMAP))
1484 * mv_qc_prep_iie - Host specific command preparation.
1485 * @qc: queued command to prepare
1487 * This routine simply redirects to the general purpose routine
1488 * if command is not DMA. Else, it handles prep of the CRQB
1489 * (command request block), does some sanity checking, and calls
1490 * the SG load routine.
1493 * Inherited from caller.
1495 static void mv_qc_prep_iie(struct ata_queued_cmd *qc)
1497 struct ata_port *ap = qc->ap;
1498 struct mv_port_priv *pp = ap->private_data;
1499 struct mv_crqb_iie *crqb;
1500 struct ata_taskfile *tf;
1504 if ((qc->tf.protocol != ATA_PROT_DMA) &&
1505 (qc->tf.protocol != ATA_PROT_NCQ))
1508 /* Fill in Gen IIE command request block */
1509 if (!(qc->tf.flags & ATA_TFLAG_WRITE))
1510 flags |= CRQB_FLAG_READ;
1512 WARN_ON(MV_MAX_Q_DEPTH <= qc->tag);
1513 flags |= qc->tag << CRQB_TAG_SHIFT;
1514 flags |= qc->tag << CRQB_HOSTQ_SHIFT;
1515 flags |= (qc->dev->link->pmp & 0xf) << CRQB_PMP_SHIFT;
1517 /* get current queue index from software */
1518 in_index = pp->req_idx;
1520 crqb = (struct mv_crqb_iie *) &pp->crqb[in_index];
1521 crqb->addr = cpu_to_le32(pp->sg_tbl_dma[qc->tag] & 0xffffffff);
1522 crqb->addr_hi = cpu_to_le32((pp->sg_tbl_dma[qc->tag] >> 16) >> 16);
1523 crqb->flags = cpu_to_le32(flags);
1526 crqb->ata_cmd[0] = cpu_to_le32(
1527 (tf->command << 16) |
1530 crqb->ata_cmd[1] = cpu_to_le32(
1536 crqb->ata_cmd[2] = cpu_to_le32(
1537 (tf->hob_lbal << 0) |
1538 (tf->hob_lbam << 8) |
1539 (tf->hob_lbah << 16) |
1540 (tf->hob_feature << 24)
1542 crqb->ata_cmd[3] = cpu_to_le32(
1544 (tf->hob_nsect << 8)
1547 if (!(qc->flags & ATA_QCFLAG_DMAMAP))
1553 * mv_qc_issue - Initiate a command to the host
1554 * @qc: queued command to start
1556 * This routine simply redirects to the general purpose routine
1557 * if command is not DMA. Else, it sanity checks our local
1558 * caches of the request producer/consumer indices then enables
1559 * DMA and bumps the request producer index.
1562 * Inherited from caller.
1564 static unsigned int mv_qc_issue(struct ata_queued_cmd *qc)
1566 struct ata_port *ap = qc->ap;
1567 void __iomem *port_mmio = mv_ap_base(ap);
1568 struct mv_port_priv *pp = ap->private_data;
1571 if ((qc->tf.protocol != ATA_PROT_DMA) &&
1572 (qc->tf.protocol != ATA_PROT_NCQ)) {
1574 * We're about to send a non-EDMA capable command to the
1575 * port. Turn off EDMA so there won't be problems accessing
1576 * shadow block, etc registers.
1579 mv_pmp_select(ap, qc->dev->link->pmp);
1580 return ata_sff_qc_issue(qc);
1583 mv_start_dma(ap, port_mmio, pp, qc->tf.protocol);
1585 pp->req_idx = (pp->req_idx + 1) & MV_MAX_Q_DEPTH_MASK;
1586 in_index = pp->req_idx << EDMA_REQ_Q_PTR_SHIFT;
1588 /* and write the request in pointer to kick the EDMA to life */
1589 writelfl((pp->crqb_dma & EDMA_REQ_Q_BASE_LO_MASK) | in_index,
1590 port_mmio + EDMA_REQ_Q_IN_PTR_OFS);
1595 static struct ata_queued_cmd *mv_get_active_qc(struct ata_port *ap)
1597 struct mv_port_priv *pp = ap->private_data;
1598 struct ata_queued_cmd *qc;
1600 if (pp->pp_flags & MV_PP_FLAG_NCQ_EN)
1602 qc = ata_qc_from_tag(ap, ap->link.active_tag);
1603 if (qc && (qc->tf.flags & ATA_TFLAG_POLLING))
1608 static void mv_pmp_error_handler(struct ata_port *ap)
1610 unsigned int pmp, pmp_map;
1611 struct mv_port_priv *pp = ap->private_data;
1613 if (pp->pp_flags & MV_PP_FLAG_DELAYED_EH) {
1615 * Perform NCQ error analysis on failed PMPs
1616 * before we freeze the port entirely.
1618 * The failed PMPs are marked earlier by mv_pmp_eh_prep().
1620 pmp_map = pp->delayed_eh_pmp_map;
1621 pp->pp_flags &= ~MV_PP_FLAG_DELAYED_EH;
1622 for (pmp = 0; pmp_map != 0; pmp++) {
1623 unsigned int this_pmp = (1 << pmp);
1624 if (pmp_map & this_pmp) {
1625 struct ata_link *link = &ap->pmp_link[pmp];
1626 pmp_map &= ~this_pmp;
1627 ata_eh_analyze_ncq_error(link);
1630 ata_port_freeze(ap);
1632 sata_pmp_error_handler(ap);
1635 static unsigned int mv_get_err_pmp_map(struct ata_port *ap)
1637 void __iomem *port_mmio = mv_ap_base(ap);
1639 return readl(port_mmio + SATA_TESTCTL_OFS) >> 16;
1642 static void mv_pmp_eh_prep(struct ata_port *ap, unsigned int pmp_map)
1644 struct ata_eh_info *ehi;
1648 * Initialize EH info for PMPs which saw device errors
1650 ehi = &ap->link.eh_info;
1651 for (pmp = 0; pmp_map != 0; pmp++) {
1652 unsigned int this_pmp = (1 << pmp);
1653 if (pmp_map & this_pmp) {
1654 struct ata_link *link = &ap->pmp_link[pmp];
1656 pmp_map &= ~this_pmp;
1657 ehi = &link->eh_info;
1658 ata_ehi_clear_desc(ehi);
1659 ata_ehi_push_desc(ehi, "dev err");
1660 ehi->err_mask |= AC_ERR_DEV;
1661 ehi->action |= ATA_EH_RESET;
1662 ata_link_abort(link);
1667 static int mv_handle_fbs_ncq_dev_err(struct ata_port *ap)
1669 struct mv_port_priv *pp = ap->private_data;
1671 unsigned int old_map, new_map;
1674 * Device error during FBS+NCQ operation:
1676 * Set a port flag to prevent further I/O being enqueued.
1677 * Leave the EDMA running to drain outstanding commands from this port.
1678 * Perform the post-mortem/EH only when all responses are complete.
1679 * Follow recovery sequence from 6042/7042 datasheet (7.3.15.4.2.2).
1681 if (!(pp->pp_flags & MV_PP_FLAG_DELAYED_EH)) {
1682 pp->pp_flags |= MV_PP_FLAG_DELAYED_EH;
1683 pp->delayed_eh_pmp_map = 0;
1685 old_map = pp->delayed_eh_pmp_map;
1686 new_map = old_map | mv_get_err_pmp_map(ap);
1688 if (old_map != new_map) {
1689 pp->delayed_eh_pmp_map = new_map;
1690 mv_pmp_eh_prep(ap, new_map & ~old_map);
1692 failed_links = hweight16(new_map);
1694 ata_port_printk(ap, KERN_INFO, "%s: pmp_map=%04x qc_map=%04x "
1695 "failed_links=%d nr_active_links=%d\n",
1696 __func__, pp->delayed_eh_pmp_map,
1697 ap->qc_active, failed_links,
1698 ap->nr_active_links);
1700 if (ap->nr_active_links <= failed_links) {
1701 mv_process_crpb_entries(ap, pp);
1704 ata_port_printk(ap, KERN_INFO, "%s: done\n", __func__);
1705 return 1; /* handled */
1707 ata_port_printk(ap, KERN_INFO, "%s: waiting\n", __func__);
1708 return 1; /* handled */
1711 static int mv_handle_fbs_non_ncq_dev_err(struct ata_port *ap)
1714 * Possible future enhancement:
1716 * FBS+non-NCQ operation is not yet implemented.
1717 * See related notes in mv_edma_cfg().
1719 * Device error during FBS+non-NCQ operation:
1721 * We need to snapshot the shadow registers for each failed command.
1722 * Follow recovery sequence from 6042/7042 datasheet (7.3.15.4.2.3).
1724 return 0; /* not handled */
1727 static int mv_handle_dev_err(struct ata_port *ap, u32 edma_err_cause)
1729 struct mv_port_priv *pp = ap->private_data;
1731 if (!(pp->pp_flags & MV_PP_FLAG_EDMA_EN))
1732 return 0; /* EDMA was not active: not handled */
1733 if (!(pp->pp_flags & MV_PP_FLAG_FBS_EN))
1734 return 0; /* FBS was not active: not handled */
1736 if (!(edma_err_cause & EDMA_ERR_DEV))
1737 return 0; /* non DEV error: not handled */
1738 edma_err_cause &= ~EDMA_ERR_IRQ_TRANSIENT;
1739 if (edma_err_cause & ~(EDMA_ERR_DEV | EDMA_ERR_SELF_DIS))
1740 return 0; /* other problems: not handled */
1742 if (pp->pp_flags & MV_PP_FLAG_NCQ_EN) {
1744 * EDMA should NOT have self-disabled for this case.
1745 * If it did, then something is wrong elsewhere,
1746 * and we cannot handle it here.
1748 if (edma_err_cause & EDMA_ERR_SELF_DIS) {
1749 ata_port_printk(ap, KERN_WARNING,
1750 "%s: err_cause=0x%x pp_flags=0x%x\n",
1751 __func__, edma_err_cause, pp->pp_flags);
1752 return 0; /* not handled */
1754 return mv_handle_fbs_ncq_dev_err(ap);
1757 * EDMA should have self-disabled for this case.
1758 * If it did not, then something is wrong elsewhere,
1759 * and we cannot handle it here.
1761 if (!(edma_err_cause & EDMA_ERR_SELF_DIS)) {
1762 ata_port_printk(ap, KERN_WARNING,
1763 "%s: err_cause=0x%x pp_flags=0x%x\n",
1764 __func__, edma_err_cause, pp->pp_flags);
1765 return 0; /* not handled */
1767 return mv_handle_fbs_non_ncq_dev_err(ap);
1769 return 0; /* not handled */
1772 static void mv_unexpected_intr(struct ata_port *ap, int edma_was_enabled)
1774 struct ata_eh_info *ehi = &ap->link.eh_info;
1775 char *when = "idle";
1777 ata_ehi_clear_desc(ehi);
1778 if (!ap || (ap->flags & ATA_FLAG_DISABLED)) {
1780 } else if (edma_was_enabled) {
1781 when = "EDMA enabled";
1783 struct ata_queued_cmd *qc = ata_qc_from_tag(ap, ap->link.active_tag);
1784 if (qc && (qc->tf.flags & ATA_TFLAG_POLLING))
1787 ata_ehi_push_desc(ehi, "unexpected device interrupt while %s", when);
1788 ehi->err_mask |= AC_ERR_OTHER;
1789 ehi->action |= ATA_EH_RESET;
1790 ata_port_freeze(ap);
1794 * mv_err_intr - Handle error interrupts on the port
1795 * @ap: ATA channel to manipulate
1796 * @qc: affected command (non-NCQ), or NULL
1798 * Most cases require a full reset of the chip's state machine,
1799 * which also performs a COMRESET.
1800 * Also, if the port disabled DMA, update our cached copy to match.
1803 * Inherited from caller.
1805 static void mv_err_intr(struct ata_port *ap)
1807 void __iomem *port_mmio = mv_ap_base(ap);
1808 u32 edma_err_cause, eh_freeze_mask, serr = 0;
1810 struct mv_port_priv *pp = ap->private_data;
1811 struct mv_host_priv *hpriv = ap->host->private_data;
1812 unsigned int action = 0, err_mask = 0;
1813 struct ata_eh_info *ehi = &ap->link.eh_info;
1814 struct ata_queued_cmd *qc;
1818 * Read and clear the SError and err_cause bits.
1819 * For GenIIe, if EDMA_ERR_TRANS_IRQ_7 is set, we also must read/clear
1820 * the FIS_IRQ_CAUSE register before clearing edma_err_cause.
1822 sata_scr_read(&ap->link, SCR_ERROR, &serr);
1823 sata_scr_write_flush(&ap->link, SCR_ERROR, serr);
1825 edma_err_cause = readl(port_mmio + EDMA_ERR_IRQ_CAUSE_OFS);
1826 if (IS_GEN_IIE(hpriv) && (edma_err_cause & EDMA_ERR_TRANS_IRQ_7)) {
1827 fis_cause = readl(port_mmio + SATA_FIS_IRQ_CAUSE_OFS);
1828 writelfl(~fis_cause, port_mmio + SATA_FIS_IRQ_CAUSE_OFS);
1830 writelfl(~edma_err_cause, port_mmio + EDMA_ERR_IRQ_CAUSE_OFS);
1832 if (edma_err_cause & EDMA_ERR_DEV) {
1834 * Device errors during FIS-based switching operation
1835 * require special handling.
1837 if (mv_handle_dev_err(ap, edma_err_cause))
1841 qc = mv_get_active_qc(ap);
1842 ata_ehi_clear_desc(ehi);
1843 ata_ehi_push_desc(ehi, "edma_err_cause=%08x pp_flags=%08x",
1844 edma_err_cause, pp->pp_flags);
1846 if (IS_GEN_IIE(hpriv) && (edma_err_cause & EDMA_ERR_TRANS_IRQ_7)) {
1847 ata_ehi_push_desc(ehi, "fis_cause=%08x", fis_cause);
1848 if (fis_cause & SATA_FIS_IRQ_AN) {
1849 u32 ec = edma_err_cause &
1850 ~(EDMA_ERR_TRANS_IRQ_7 | EDMA_ERR_IRQ_TRANSIENT);
1851 sata_async_notification(ap);
1853 return; /* Just an AN; no need for the nukes */
1854 ata_ehi_push_desc(ehi, "SDB notify");
1858 * All generations share these EDMA error cause bits:
1860 if (edma_err_cause & EDMA_ERR_DEV) {
1861 err_mask |= AC_ERR_DEV;
1862 action |= ATA_EH_RESET;
1863 ata_ehi_push_desc(ehi, "dev error");
1865 if (edma_err_cause & (EDMA_ERR_D_PAR | EDMA_ERR_PRD_PAR |
1866 EDMA_ERR_CRQB_PAR | EDMA_ERR_CRPB_PAR |
1867 EDMA_ERR_INTRL_PAR)) {
1868 err_mask |= AC_ERR_ATA_BUS;
1869 action |= ATA_EH_RESET;
1870 ata_ehi_push_desc(ehi, "parity error");
1872 if (edma_err_cause & (EDMA_ERR_DEV_DCON | EDMA_ERR_DEV_CON)) {
1873 ata_ehi_hotplugged(ehi);
1874 ata_ehi_push_desc(ehi, edma_err_cause & EDMA_ERR_DEV_DCON ?
1875 "dev disconnect" : "dev connect");
1876 action |= ATA_EH_RESET;
1880 * Gen-I has a different SELF_DIS bit,
1881 * different FREEZE bits, and no SERR bit:
1883 if (IS_GEN_I(hpriv)) {
1884 eh_freeze_mask = EDMA_EH_FREEZE_5;
1885 if (edma_err_cause & EDMA_ERR_SELF_DIS_5) {
1886 pp->pp_flags &= ~MV_PP_FLAG_EDMA_EN;
1887 ata_ehi_push_desc(ehi, "EDMA self-disable");
1890 eh_freeze_mask = EDMA_EH_FREEZE;
1891 if (edma_err_cause & EDMA_ERR_SELF_DIS) {
1892 pp->pp_flags &= ~MV_PP_FLAG_EDMA_EN;
1893 ata_ehi_push_desc(ehi, "EDMA self-disable");
1895 if (edma_err_cause & EDMA_ERR_SERR) {
1896 ata_ehi_push_desc(ehi, "SError=%08x", serr);
1897 err_mask |= AC_ERR_ATA_BUS;
1898 action |= ATA_EH_RESET;
1903 err_mask = AC_ERR_OTHER;
1904 action |= ATA_EH_RESET;
1907 ehi->serror |= serr;
1908 ehi->action |= action;
1911 qc->err_mask |= err_mask;
1913 ehi->err_mask |= err_mask;
1915 if (err_mask == AC_ERR_DEV) {
1917 * Cannot do ata_port_freeze() here,
1918 * because it would kill PIO access,
1919 * which is needed for further diagnosis.
1923 } else if (edma_err_cause & eh_freeze_mask) {
1925 * Note to self: ata_port_freeze() calls ata_port_abort()
1927 ata_port_freeze(ap);
1934 ata_link_abort(qc->dev->link);
1940 static void mv_process_crpb_response(struct ata_port *ap,
1941 struct mv_crpb *response, unsigned int tag, int ncq_enabled)
1943 struct ata_queued_cmd *qc = ata_qc_from_tag(ap, tag);
1947 u16 edma_status = le16_to_cpu(response->flags);
1949 * edma_status from a response queue entry:
1950 * LSB is from EDMA_ERR_IRQ_CAUSE_OFS (non-NCQ only).
1951 * MSB is saved ATA status from command completion.
1954 u8 err_cause = edma_status & 0xff & ~EDMA_ERR_DEV;
1957 * Error will be seen/handled by mv_err_intr().
1958 * So do nothing at all here.
1963 ata_status = edma_status >> CRPB_FLAG_STATUS_SHIFT;
1964 if (!ac_err_mask(ata_status))
1965 ata_qc_complete(qc);
1966 /* else: leave it for mv_err_intr() */
1968 ata_port_printk(ap, KERN_ERR, "%s: no qc for tag=%d\n",
1973 static void mv_process_crpb_entries(struct ata_port *ap, struct mv_port_priv *pp)
1975 void __iomem *port_mmio = mv_ap_base(ap);
1976 struct mv_host_priv *hpriv = ap->host->private_data;
1978 bool work_done = false;
1979 int ncq_enabled = (pp->pp_flags & MV_PP_FLAG_NCQ_EN);
1981 /* Get the hardware queue position index */
1982 in_index = (readl(port_mmio + EDMA_RSP_Q_IN_PTR_OFS)
1983 >> EDMA_RSP_Q_PTR_SHIFT) & MV_MAX_Q_DEPTH_MASK;
1985 /* Process new responses from since the last time we looked */
1986 while (in_index != pp->resp_idx) {
1988 struct mv_crpb *response = &pp->crpb[pp->resp_idx];
1990 pp->resp_idx = (pp->resp_idx + 1) & MV_MAX_Q_DEPTH_MASK;
1992 if (IS_GEN_I(hpriv)) {
1993 /* 50xx: no NCQ, only one command active at a time */
1994 tag = ap->link.active_tag;
1996 /* Gen II/IIE: get command tag from CRPB entry */
1997 tag = le16_to_cpu(response->id) & 0x1f;
1999 mv_process_crpb_response(ap, response, tag, ncq_enabled);
2003 /* Update the software queue position index in hardware */
2005 writelfl((pp->crpb_dma & EDMA_RSP_Q_BASE_LO_MASK) |
2006 (pp->resp_idx << EDMA_RSP_Q_PTR_SHIFT),
2007 port_mmio + EDMA_RSP_Q_OUT_PTR_OFS);
2010 static void mv_port_intr(struct ata_port *ap, u32 port_cause)
2012 struct mv_port_priv *pp;
2013 int edma_was_enabled;
2015 if (!ap || (ap->flags & ATA_FLAG_DISABLED)) {
2016 mv_unexpected_intr(ap, 0);
2020 * Grab a snapshot of the EDMA_EN flag setting,
2021 * so that we have a consistent view for this port,
2022 * even if something we call of our routines changes it.
2024 pp = ap->private_data;
2025 edma_was_enabled = (pp->pp_flags & MV_PP_FLAG_EDMA_EN);
2027 * Process completed CRPB response(s) before other events.
2029 if (edma_was_enabled && (port_cause & DONE_IRQ)) {
2030 mv_process_crpb_entries(ap, pp);
2031 if (pp->pp_flags & MV_PP_FLAG_DELAYED_EH)
2032 mv_handle_fbs_ncq_dev_err(ap);
2035 * Handle chip-reported errors, or continue on to handle PIO.
2037 if (unlikely(port_cause & ERR_IRQ)) {
2039 } else if (!edma_was_enabled) {
2040 struct ata_queued_cmd *qc = mv_get_active_qc(ap);
2042 ata_sff_host_intr(ap, qc);
2044 mv_unexpected_intr(ap, edma_was_enabled);
2049 * mv_host_intr - Handle all interrupts on the given host controller
2050 * @host: host specific structure
2051 * @main_irq_cause: Main interrupt cause register for the chip.
2054 * Inherited from caller.
2056 static int mv_host_intr(struct ata_host *host, u32 main_irq_cause)
2058 struct mv_host_priv *hpriv = host->private_data;
2059 void __iomem *mmio = hpriv->base, *hc_mmio;
2060 unsigned int handled = 0, port;
2062 for (port = 0; port < hpriv->n_ports; port++) {
2063 struct ata_port *ap = host->ports[port];
2064 unsigned int p, shift, hardport, port_cause;
2066 MV_PORT_TO_SHIFT_AND_HARDPORT(port, shift, hardport);
2068 * Each hc within the host has its own hc_irq_cause register,
2069 * where the interrupting ports bits get ack'd.
2071 if (hardport == 0) { /* first port on this hc ? */
2072 u32 hc_cause = (main_irq_cause >> shift) & HC0_IRQ_PEND;
2073 u32 port_mask, ack_irqs;
2075 * Skip this entire hc if nothing pending for any ports
2078 port += MV_PORTS_PER_HC - 1;
2082 * We don't need/want to read the hc_irq_cause register,
2083 * because doing so hurts performance, and
2084 * main_irq_cause already gives us everything we need.
2086 * But we do have to *write* to the hc_irq_cause to ack
2087 * the ports that we are handling this time through.
2089 * This requires that we create a bitmap for those
2090 * ports which interrupted us, and use that bitmap
2091 * to ack (only) those ports via hc_irq_cause.
2094 for (p = 0; p < MV_PORTS_PER_HC; ++p) {
2095 if ((port + p) >= hpriv->n_ports)
2097 port_mask = (DONE_IRQ | ERR_IRQ) << (p * 2);
2098 if (hc_cause & port_mask)
2099 ack_irqs |= (DMA_IRQ | DEV_IRQ) << p;
2101 hc_mmio = mv_hc_base_from_port(mmio, port);
2102 writelfl(~ack_irqs, hc_mmio + HC_IRQ_CAUSE_OFS);
2106 * Handle interrupts signalled for this port:
2108 port_cause = (main_irq_cause >> shift) & (DONE_IRQ | ERR_IRQ);
2110 mv_port_intr(ap, port_cause);
2115 static int mv_pci_error(struct ata_host *host, void __iomem *mmio)
2117 struct mv_host_priv *hpriv = host->private_data;
2118 struct ata_port *ap;
2119 struct ata_queued_cmd *qc;
2120 struct ata_eh_info *ehi;
2121 unsigned int i, err_mask, printed = 0;
2124 err_cause = readl(mmio + hpriv->irq_cause_ofs);
2126 dev_printk(KERN_ERR, host->dev, "PCI ERROR; PCI IRQ cause=0x%08x\n",
2129 DPRINTK("All regs @ PCI error\n");
2130 mv_dump_all_regs(mmio, -1, to_pci_dev(host->dev));
2132 writelfl(0, mmio + hpriv->irq_cause_ofs);
2134 for (i = 0; i < host->n_ports; i++) {
2135 ap = host->ports[i];
2136 if (!ata_link_offline(&ap->link)) {
2137 ehi = &ap->link.eh_info;
2138 ata_ehi_clear_desc(ehi);
2140 ata_ehi_push_desc(ehi,
2141 "PCI err cause 0x%08x", err_cause);
2142 err_mask = AC_ERR_HOST_BUS;
2143 ehi->action = ATA_EH_RESET;
2144 qc = ata_qc_from_tag(ap, ap->link.active_tag);
2146 qc->err_mask |= err_mask;
2148 ehi->err_mask |= err_mask;
2150 ata_port_freeze(ap);
2153 return 1; /* handled */
2157 * mv_interrupt - Main interrupt event handler
2159 * @dev_instance: private data; in this case the host structure
2161 * Read the read only register to determine if any host
2162 * controllers have pending interrupts. If so, call lower level
2163 * routine to handle. Also check for PCI errors which are only
2167 * This routine holds the host lock while processing pending
2170 static irqreturn_t mv_interrupt(int irq, void *dev_instance)
2172 struct ata_host *host = dev_instance;
2173 struct mv_host_priv *hpriv = host->private_data;
2174 unsigned int handled = 0;
2175 u32 main_irq_cause, main_irq_mask;
2177 spin_lock(&host->lock);
2178 main_irq_cause = readl(hpriv->main_irq_cause_addr);
2179 main_irq_mask = readl(hpriv->main_irq_mask_addr);
2181 * Deal with cases where we either have nothing pending, or have read
2182 * a bogus register value which can indicate HW removal or PCI fault.
2184 if ((main_irq_cause & main_irq_mask) && (main_irq_cause != 0xffffffffU)) {
2185 if (unlikely((main_irq_cause & PCI_ERR) && HAS_PCI(host)))
2186 handled = mv_pci_error(host, hpriv->base);
2188 handled = mv_host_intr(host, main_irq_cause);
2190 spin_unlock(&host->lock);
2191 return IRQ_RETVAL(handled);
2194 static unsigned int mv5_scr_offset(unsigned int sc_reg_in)
2198 switch (sc_reg_in) {
2202 ofs = sc_reg_in * sizeof(u32);
2211 static int mv5_scr_read(struct ata_port *ap, unsigned int sc_reg_in, u32 *val)
2213 struct mv_host_priv *hpriv = ap->host->private_data;
2214 void __iomem *mmio = hpriv->base;
2215 void __iomem *addr = mv5_phy_base(mmio, ap->port_no);
2216 unsigned int ofs = mv5_scr_offset(sc_reg_in);
2218 if (ofs != 0xffffffffU) {
2219 *val = readl(addr + ofs);
2225 static int mv5_scr_write(struct ata_port *ap, unsigned int sc_reg_in, u32 val)
2227 struct mv_host_priv *hpriv = ap->host->private_data;
2228 void __iomem *mmio = hpriv->base;
2229 void __iomem *addr = mv5_phy_base(mmio, ap->port_no);
2230 unsigned int ofs = mv5_scr_offset(sc_reg_in);
2232 if (ofs != 0xffffffffU) {
2233 writelfl(val, addr + ofs);
2239 static void mv5_reset_bus(struct ata_host *host, void __iomem *mmio)
2241 struct pci_dev *pdev = to_pci_dev(host->dev);
2244 early_5080 = (pdev->device == 0x5080) && (pdev->revision == 0);
2247 u32 tmp = readl(mmio + MV_PCI_EXP_ROM_BAR_CTL);
2249 writel(tmp, mmio + MV_PCI_EXP_ROM_BAR_CTL);
2252 mv_reset_pci_bus(host, mmio);
2255 static void mv5_reset_flash(struct mv_host_priv *hpriv, void __iomem *mmio)
2257 writel(0x0fcfffff, mmio + MV_FLASH_CTL_OFS);
2260 static void mv5_read_preamp(struct mv_host_priv *hpriv, int idx,
2263 void __iomem *phy_mmio = mv5_phy_base(mmio, idx);
2266 tmp = readl(phy_mmio + MV5_PHY_MODE);
2268 hpriv->signal[idx].pre = tmp & 0x1800; /* bits 12:11 */
2269 hpriv->signal[idx].amps = tmp & 0xe0; /* bits 7:5 */
2272 static void mv5_enable_leds(struct mv_host_priv *hpriv, void __iomem *mmio)
2276 writel(0, mmio + MV_GPIO_PORT_CTL_OFS);
2278 /* FIXME: handle MV_HP_ERRATA_50XXB2 errata */
2280 tmp = readl(mmio + MV_PCI_EXP_ROM_BAR_CTL);
2282 writel(tmp, mmio + MV_PCI_EXP_ROM_BAR_CTL);
2285 static void mv5_phy_errata(struct mv_host_priv *hpriv, void __iomem *mmio,
2288 void __iomem *phy_mmio = mv5_phy_base(mmio, port);
2289 const u32 mask = (1<<12) | (1<<11) | (1<<7) | (1<<6) | (1<<5);
2291 int fix_apm_sq = (hpriv->hp_flags & MV_HP_ERRATA_50XXB0);
2294 tmp = readl(phy_mmio + MV5_LTMODE_OFS);
2296 writel(tmp, phy_mmio + MV5_LTMODE_OFS);
2298 tmp = readl(phy_mmio + MV5_PHY_CTL_OFS);
2301 writel(tmp, phy_mmio + MV5_PHY_CTL_OFS);
2304 tmp = readl(phy_mmio + MV5_PHY_MODE);
2306 tmp |= hpriv->signal[port].pre;
2307 tmp |= hpriv->signal[port].amps;
2308 writel(tmp, phy_mmio + MV5_PHY_MODE);
2313 #define ZERO(reg) writel(0, port_mmio + (reg))
2314 static void mv5_reset_hc_port(struct mv_host_priv *hpriv, void __iomem *mmio,
2317 void __iomem *port_mmio = mv_port_base(mmio, port);
2319 mv_reset_channel(hpriv, mmio, port);
2321 ZERO(0x028); /* command */
2322 writel(0x11f, port_mmio + EDMA_CFG_OFS);
2323 ZERO(0x004); /* timer */
2324 ZERO(0x008); /* irq err cause */
2325 ZERO(0x00c); /* irq err mask */
2326 ZERO(0x010); /* rq bah */
2327 ZERO(0x014); /* rq inp */
2328 ZERO(0x018); /* rq outp */
2329 ZERO(0x01c); /* respq bah */
2330 ZERO(0x024); /* respq outp */
2331 ZERO(0x020); /* respq inp */
2332 ZERO(0x02c); /* test control */
2333 writel(0xbc, port_mmio + EDMA_IORDY_TMOUT_OFS);
2337 #define ZERO(reg) writel(0, hc_mmio + (reg))
2338 static void mv5_reset_one_hc(struct mv_host_priv *hpriv, void __iomem *mmio,
2341 void __iomem *hc_mmio = mv_hc_base(mmio, hc);
2349 tmp = readl(hc_mmio + 0x20);
2352 writel(tmp, hc_mmio + 0x20);
2356 static int mv5_reset_hc(struct mv_host_priv *hpriv, void __iomem *mmio,
2359 unsigned int hc, port;
2361 for (hc = 0; hc < n_hc; hc++) {
2362 for (port = 0; port < MV_PORTS_PER_HC; port++)
2363 mv5_reset_hc_port(hpriv, mmio,
2364 (hc * MV_PORTS_PER_HC) + port);
2366 mv5_reset_one_hc(hpriv, mmio, hc);
2373 #define ZERO(reg) writel(0, mmio + (reg))
2374 static void mv_reset_pci_bus(struct ata_host *host, void __iomem *mmio)
2376 struct mv_host_priv *hpriv = host->private_data;
2379 tmp = readl(mmio + MV_PCI_MODE_OFS);
2381 writel(tmp, mmio + MV_PCI_MODE_OFS);
2383 ZERO(MV_PCI_DISC_TIMER);
2384 ZERO(MV_PCI_MSI_TRIGGER);
2385 writel(0x000100ff, mmio + MV_PCI_XBAR_TMOUT_OFS);
2386 ZERO(PCI_HC_MAIN_IRQ_MASK_OFS);
2387 ZERO(MV_PCI_SERR_MASK);
2388 ZERO(hpriv->irq_cause_ofs);
2389 ZERO(hpriv->irq_mask_ofs);
2390 ZERO(MV_PCI_ERR_LOW_ADDRESS);
2391 ZERO(MV_PCI_ERR_HIGH_ADDRESS);
2392 ZERO(MV_PCI_ERR_ATTRIBUTE);
2393 ZERO(MV_PCI_ERR_COMMAND);
2397 static void mv6_reset_flash(struct mv_host_priv *hpriv, void __iomem *mmio)
2401 mv5_reset_flash(hpriv, mmio);
2403 tmp = readl(mmio + MV_GPIO_PORT_CTL_OFS);
2405 tmp |= (1 << 5) | (1 << 6);
2406 writel(tmp, mmio + MV_GPIO_PORT_CTL_OFS);
2410 * mv6_reset_hc - Perform the 6xxx global soft reset
2411 * @mmio: base address of the HBA
2413 * This routine only applies to 6xxx parts.
2416 * Inherited from caller.
2418 static int mv6_reset_hc(struct mv_host_priv *hpriv, void __iomem *mmio,
2421 void __iomem *reg = mmio + PCI_MAIN_CMD_STS_OFS;
2425 /* Following procedure defined in PCI "main command and status
2429 writel(t | STOP_PCI_MASTER, reg);
2431 for (i = 0; i < 1000; i++) {
2434 if (PCI_MASTER_EMPTY & t)
2437 if (!(PCI_MASTER_EMPTY & t)) {
2438 printk(KERN_ERR DRV_NAME ": PCI master won't flush\n");
2446 writel(t | GLOB_SFT_RST, reg);
2449 } while (!(GLOB_SFT_RST & t) && (i-- > 0));
2451 if (!(GLOB_SFT_RST & t)) {
2452 printk(KERN_ERR DRV_NAME ": can't set global reset\n");
2457 /* clear reset and *reenable the PCI master* (not mentioned in spec) */
2460 writel(t & ~(GLOB_SFT_RST | STOP_PCI_MASTER), reg);
2463 } while ((GLOB_SFT_RST & t) && (i-- > 0));
2465 if (GLOB_SFT_RST & t) {
2466 printk(KERN_ERR DRV_NAME ": can't clear global reset\n");
2473 static void mv6_read_preamp(struct mv_host_priv *hpriv, int idx,
2476 void __iomem *port_mmio;
2479 tmp = readl(mmio + MV_RESET_CFG_OFS);
2480 if ((tmp & (1 << 0)) == 0) {
2481 hpriv->signal[idx].amps = 0x7 << 8;
2482 hpriv->signal[idx].pre = 0x1 << 5;
2486 port_mmio = mv_port_base(mmio, idx);
2487 tmp = readl(port_mmio + PHY_MODE2);
2489 hpriv->signal[idx].amps = tmp & 0x700; /* bits 10:8 */
2490 hpriv->signal[idx].pre = tmp & 0xe0; /* bits 7:5 */
2493 static void mv6_enable_leds(struct mv_host_priv *hpriv, void __iomem *mmio)
2495 writel(0x00000060, mmio + MV_GPIO_PORT_CTL_OFS);
2498 static void mv6_phy_errata(struct mv_host_priv *hpriv, void __iomem *mmio,
2501 void __iomem *port_mmio = mv_port_base(mmio, port);
2503 u32 hp_flags = hpriv->hp_flags;
2505 hp_flags & (MV_HP_ERRATA_60X1B2 | MV_HP_ERRATA_60X1C0);
2507 hp_flags & (MV_HP_ERRATA_60X1B2 | MV_HP_ERRATA_60X1C0);
2510 if (fix_phy_mode2) {
2511 m2 = readl(port_mmio + PHY_MODE2);
2514 writel(m2, port_mmio + PHY_MODE2);
2518 m2 = readl(port_mmio + PHY_MODE2);
2519 m2 &= ~((1 << 16) | (1 << 31));
2520 writel(m2, port_mmio + PHY_MODE2);
2525 /* who knows what this magic does */
2526 tmp = readl(port_mmio + PHY_MODE3);
2529 writel(tmp, port_mmio + PHY_MODE3);
2531 if (fix_phy_mode4) {
2534 m4 = readl(port_mmio + PHY_MODE4);
2536 if (hp_flags & MV_HP_ERRATA_60X1B2)
2537 tmp = readl(port_mmio + PHY_MODE3);
2539 /* workaround for errata FEr SATA#10 (part 1) */
2540 m4 = (m4 & ~(1 << 1)) | (1 << 0);
2542 writel(m4, port_mmio + PHY_MODE4);
2544 if (hp_flags & MV_HP_ERRATA_60X1B2)
2545 writel(tmp, port_mmio + PHY_MODE3);
2548 /* Revert values of pre-emphasis and signal amps to the saved ones */
2549 m2 = readl(port_mmio + PHY_MODE2);
2551 m2 &= ~MV_M2_PREAMP_MASK;
2552 m2 |= hpriv->signal[port].amps;
2553 m2 |= hpriv->signal[port].pre;
2556 /* according to mvSata 3.6.1, some IIE values are fixed */
2557 if (IS_GEN_IIE(hpriv)) {
2562 writel(m2, port_mmio + PHY_MODE2);
2565 /* TODO: use the generic LED interface to configure the SATA Presence */
2566 /* & Acitivy LEDs on the board */
2567 static void mv_soc_enable_leds(struct mv_host_priv *hpriv,
2573 static void mv_soc_read_preamp(struct mv_host_priv *hpriv, int idx,
2576 void __iomem *port_mmio;
2579 port_mmio = mv_port_base(mmio, idx);
2580 tmp = readl(port_mmio + PHY_MODE2);
2582 hpriv->signal[idx].amps = tmp & 0x700; /* bits 10:8 */
2583 hpriv->signal[idx].pre = tmp & 0xe0; /* bits 7:5 */
2587 #define ZERO(reg) writel(0, port_mmio + (reg))
2588 static void mv_soc_reset_hc_port(struct mv_host_priv *hpriv,
2589 void __iomem *mmio, unsigned int port)
2591 void __iomem *port_mmio = mv_port_base(mmio, port);
2593 mv_reset_channel(hpriv, mmio, port);
2595 ZERO(0x028); /* command */
2596 writel(0x101f, port_mmio + EDMA_CFG_OFS);
2597 ZERO(0x004); /* timer */
2598 ZERO(0x008); /* irq err cause */
2599 ZERO(0x00c); /* irq err mask */
2600 ZERO(0x010); /* rq bah */
2601 ZERO(0x014); /* rq inp */
2602 ZERO(0x018); /* rq outp */
2603 ZERO(0x01c); /* respq bah */
2604 ZERO(0x024); /* respq outp */
2605 ZERO(0x020); /* respq inp */
2606 ZERO(0x02c); /* test control */
2607 writel(0xbc, port_mmio + EDMA_IORDY_TMOUT_OFS);
2612 #define ZERO(reg) writel(0, hc_mmio + (reg))
2613 static void mv_soc_reset_one_hc(struct mv_host_priv *hpriv,
2616 void __iomem *hc_mmio = mv_hc_base(mmio, 0);
2626 static int mv_soc_reset_hc(struct mv_host_priv *hpriv,
2627 void __iomem *mmio, unsigned int n_hc)
2631 for (port = 0; port < hpriv->n_ports; port++)
2632 mv_soc_reset_hc_port(hpriv, mmio, port);
2634 mv_soc_reset_one_hc(hpriv, mmio);
2639 static void mv_soc_reset_flash(struct mv_host_priv *hpriv,
2645 static void mv_soc_reset_bus(struct ata_host *host, void __iomem *mmio)
2650 static void mv_setup_ifcfg(void __iomem *port_mmio, int want_gen2i)
2652 u32 ifcfg = readl(port_mmio + SATA_INTERFACE_CFG_OFS);
2654 ifcfg = (ifcfg & 0xf7f) | 0x9b1000; /* from chip spec */
2656 ifcfg |= (1 << 7); /* enable gen2i speed */
2657 writelfl(ifcfg, port_mmio + SATA_INTERFACE_CFG_OFS);
2660 static void mv_reset_channel(struct mv_host_priv *hpriv, void __iomem *mmio,
2661 unsigned int port_no)
2663 void __iomem *port_mmio = mv_port_base(mmio, port_no);
2666 * The datasheet warns against setting EDMA_RESET when EDMA is active
2667 * (but doesn't say what the problem might be). So we first try
2668 * to disable the EDMA engine before doing the EDMA_RESET operation.
2670 mv_stop_edma_engine(port_mmio);
2671 writelfl(EDMA_RESET, port_mmio + EDMA_CMD_OFS);
2673 if (!IS_GEN_I(hpriv)) {
2674 /* Enable 3.0gb/s link speed: this survives EDMA_RESET */
2675 mv_setup_ifcfg(port_mmio, 1);
2678 * Strobing EDMA_RESET here causes a hard reset of the SATA transport,
2679 * link, and physical layers. It resets all SATA interface registers
2680 * (except for SATA_INTERFACE_CFG), and issues a COMRESET to the dev.
2682 writelfl(EDMA_RESET, port_mmio + EDMA_CMD_OFS);
2683 udelay(25); /* allow reset propagation */
2684 writelfl(0, port_mmio + EDMA_CMD_OFS);
2686 hpriv->ops->phy_errata(hpriv, mmio, port_no);
2688 if (IS_GEN_I(hpriv))
2692 static void mv_pmp_select(struct ata_port *ap, int pmp)
2694 if (sata_pmp_supported(ap)) {
2695 void __iomem *port_mmio = mv_ap_base(ap);
2696 u32 reg = readl(port_mmio + SATA_IFCTL_OFS);
2697 int old = reg & 0xf;
2700 reg = (reg & ~0xf) | pmp;
2701 writelfl(reg, port_mmio + SATA_IFCTL_OFS);
2706 static int mv_pmp_hardreset(struct ata_link *link, unsigned int *class,
2707 unsigned long deadline)
2709 mv_pmp_select(link->ap, sata_srst_pmp(link));
2710 return sata_std_hardreset(link, class, deadline);
2713 static int mv_softreset(struct ata_link *link, unsigned int *class,
2714 unsigned long deadline)
2716 mv_pmp_select(link->ap, sata_srst_pmp(link));
2717 return ata_sff_softreset(link, class, deadline);
2720 static int mv_hardreset(struct ata_link *link, unsigned int *class,
2721 unsigned long deadline)
2723 struct ata_port *ap = link->ap;
2724 struct mv_host_priv *hpriv = ap->host->private_data;
2725 struct mv_port_priv *pp = ap->private_data;
2726 void __iomem *mmio = hpriv->base;
2727 int rc, attempts = 0, extra = 0;
2731 mv_reset_channel(hpriv, mmio, ap->port_no);
2732 pp->pp_flags &= ~MV_PP_FLAG_EDMA_EN;
2734 /* Workaround for errata FEr SATA#10 (part 2) */
2736 const unsigned long *timing =
2737 sata_ehc_deb_timing(&link->eh_context);
2739 rc = sata_link_hardreset(link, timing, deadline + extra,
2741 rc = online ? -EAGAIN : rc;
2744 sata_scr_read(link, SCR_STATUS, &sstatus);
2745 if (!IS_GEN_I(hpriv) && ++attempts >= 5 && sstatus == 0x121) {
2746 /* Force 1.5gb/s link speed and try again */
2747 mv_setup_ifcfg(mv_ap_base(ap), 0);
2748 if (time_after(jiffies + HZ, deadline))
2749 extra = HZ; /* only extend it once, max */
2751 } while (sstatus != 0x0 && sstatus != 0x113 && sstatus != 0x123);
2756 static void mv_eh_freeze(struct ata_port *ap)
2758 struct mv_host_priv *hpriv = ap->host->private_data;
2759 unsigned int shift, hardport, port = ap->port_no;
2762 /* FIXME: handle coalescing completion events properly */
2765 MV_PORT_TO_SHIFT_AND_HARDPORT(port, shift, hardport);
2767 /* disable assertion of portN err, done events */
2768 main_irq_mask = readl(hpriv->main_irq_mask_addr);
2769 main_irq_mask &= ~((DONE_IRQ | ERR_IRQ) << shift);
2770 writelfl(main_irq_mask, hpriv->main_irq_mask_addr);
2773 static void mv_eh_thaw(struct ata_port *ap)
2775 struct mv_host_priv *hpriv = ap->host->private_data;
2776 unsigned int shift, hardport, port = ap->port_no;
2777 void __iomem *hc_mmio = mv_hc_base_from_port(hpriv->base, port);
2778 void __iomem *port_mmio = mv_ap_base(ap);
2779 u32 main_irq_mask, hc_irq_cause;
2781 /* FIXME: handle coalescing completion events properly */
2783 MV_PORT_TO_SHIFT_AND_HARDPORT(port, shift, hardport);
2785 /* clear EDMA errors on this port */
2786 writel(0, port_mmio + EDMA_ERR_IRQ_CAUSE_OFS);
2788 /* clear pending irq events */
2789 hc_irq_cause = readl(hc_mmio + HC_IRQ_CAUSE_OFS);
2790 hc_irq_cause &= ~((DEV_IRQ | DMA_IRQ) << hardport);
2791 writelfl(hc_irq_cause, hc_mmio + HC_IRQ_CAUSE_OFS);
2793 /* enable assertion of portN err, done events */
2794 main_irq_mask = readl(hpriv->main_irq_mask_addr);
2795 main_irq_mask |= ((DONE_IRQ | ERR_IRQ) << shift);
2796 writelfl(main_irq_mask, hpriv->main_irq_mask_addr);
2800 * mv_port_init - Perform some early initialization on a single port.
2801 * @port: libata data structure storing shadow register addresses
2802 * @port_mmio: base address of the port
2804 * Initialize shadow register mmio addresses, clear outstanding
2805 * interrupts on the port, and unmask interrupts for the future
2806 * start of the port.
2809 * Inherited from caller.
2811 static void mv_port_init(struct ata_ioports *port, void __iomem *port_mmio)
2813 void __iomem *shd_base = port_mmio + SHD_BLK_OFS;
2816 /* PIO related setup
2818 port->data_addr = shd_base + (sizeof(u32) * ATA_REG_DATA);
2820 port->feature_addr = shd_base + (sizeof(u32) * ATA_REG_ERR);
2821 port->nsect_addr = shd_base + (sizeof(u32) * ATA_REG_NSECT);
2822 port->lbal_addr = shd_base + (sizeof(u32) * ATA_REG_LBAL);
2823 port->lbam_addr = shd_base + (sizeof(u32) * ATA_REG_LBAM);
2824 port->lbah_addr = shd_base + (sizeof(u32) * ATA_REG_LBAH);
2825 port->device_addr = shd_base + (sizeof(u32) * ATA_REG_DEVICE);
2827 port->command_addr = shd_base + (sizeof(u32) * ATA_REG_STATUS);
2828 /* special case: control/altstatus doesn't have ATA_REG_ address */
2829 port->altstatus_addr = port->ctl_addr = shd_base + SHD_CTL_AST_OFS;
2832 port->cmd_addr = port->bmdma_addr = port->scr_addr = NULL;
2834 /* Clear any currently outstanding port interrupt conditions */
2835 serr_ofs = mv_scr_offset(SCR_ERROR);
2836 writelfl(readl(port_mmio + serr_ofs), port_mmio + serr_ofs);
2837 writelfl(0, port_mmio + EDMA_ERR_IRQ_CAUSE_OFS);
2839 /* unmask all non-transient EDMA error interrupts */
2840 writelfl(~EDMA_ERR_IRQ_TRANSIENT, port_mmio + EDMA_ERR_IRQ_MASK_OFS);
2842 VPRINTK("EDMA cfg=0x%08x EDMA IRQ err cause/mask=0x%08x/0x%08x\n",
2843 readl(port_mmio + EDMA_CFG_OFS),
2844 readl(port_mmio + EDMA_ERR_IRQ_CAUSE_OFS),
2845 readl(port_mmio + EDMA_ERR_IRQ_MASK_OFS));
2848 static unsigned int mv_in_pcix_mode(struct ata_host *host)
2850 struct mv_host_priv *hpriv = host->private_data;
2851 void __iomem *mmio = hpriv->base;
2854 if (!HAS_PCI(host) || !IS_PCIE(hpriv))
2855 return 0; /* not PCI-X capable */
2856 reg = readl(mmio + MV_PCI_MODE_OFS);
2857 if ((reg & MV_PCI_MODE_MASK) == 0)
2858 return 0; /* conventional PCI mode */
2859 return 1; /* chip is in PCI-X mode */
2862 static int mv_pci_cut_through_okay(struct ata_host *host)
2864 struct mv_host_priv *hpriv = host->private_data;
2865 void __iomem *mmio = hpriv->base;
2868 if (!mv_in_pcix_mode(host)) {
2869 reg = readl(mmio + PCI_COMMAND_OFS);
2870 if (reg & PCI_COMMAND_MRDTRIG)
2871 return 0; /* not okay */
2873 return 1; /* okay */
2876 static int mv_chip_id(struct ata_host *host, unsigned int board_idx)
2878 struct pci_dev *pdev = to_pci_dev(host->dev);
2879 struct mv_host_priv *hpriv = host->private_data;
2880 u32 hp_flags = hpriv->hp_flags;
2882 switch (board_idx) {
2884 hpriv->ops = &mv5xxx_ops;
2885 hp_flags |= MV_HP_GEN_I;
2887 switch (pdev->revision) {
2889 hp_flags |= MV_HP_ERRATA_50XXB0;
2892 hp_flags |= MV_HP_ERRATA_50XXB2;
2895 dev_printk(KERN_WARNING, &pdev->dev,
2896 "Applying 50XXB2 workarounds to unknown rev\n");
2897 hp_flags |= MV_HP_ERRATA_50XXB2;
2904 hpriv->ops = &mv5xxx_ops;
2905 hp_flags |= MV_HP_GEN_I;
2907 switch (pdev->revision) {
2909 hp_flags |= MV_HP_ERRATA_50XXB0;
2912 hp_flags |= MV_HP_ERRATA_50XXB2;
2915 dev_printk(KERN_WARNING, &pdev->dev,
2916 "Applying B2 workarounds to unknown rev\n");
2917 hp_flags |= MV_HP_ERRATA_50XXB2;
2924 hpriv->ops = &mv6xxx_ops;
2925 hp_flags |= MV_HP_GEN_II;
2927 switch (pdev->revision) {
2929 hp_flags |= MV_HP_ERRATA_60X1B2;
2932 hp_flags |= MV_HP_ERRATA_60X1C0;
2935 dev_printk(KERN_WARNING, &pdev->dev,
2936 "Applying B2 workarounds to unknown rev\n");
2937 hp_flags |= MV_HP_ERRATA_60X1B2;
2943 hp_flags |= MV_HP_PCIE | MV_HP_CUT_THROUGH;
2944 if (pdev->vendor == PCI_VENDOR_ID_TTI &&
2945 (pdev->device == 0x2300 || pdev->device == 0x2310))
2948 * Highpoint RocketRAID PCIe 23xx series cards:
2950 * Unconfigured drives are treated as "Legacy"
2951 * by the BIOS, and it overwrites sector 8 with
2952 * a "Lgcy" metadata block prior to Linux boot.
2954 * Configured drives (RAID or JBOD) leave sector 8
2955 * alone, but instead overwrite a high numbered
2956 * sector for the RAID metadata. This sector can
2957 * be determined exactly, by truncating the physical
2958 * drive capacity to a nice even GB value.
2960 * RAID metadata is at: (dev->n_sectors & ~0xfffff)
2962 * Warn the user, lest they think we're just buggy.
2964 printk(KERN_WARNING DRV_NAME ": Highpoint RocketRAID"
2965 " BIOS CORRUPTS DATA on all attached drives,"
2966 " regardless of if/how they are configured."
2968 printk(KERN_WARNING DRV_NAME ": For data safety, do not"
2969 " use sectors 8-9 on \"Legacy\" drives,"
2970 " and avoid the final two gigabytes on"
2971 " all RocketRAID BIOS initialized drives.\n");
2975 hpriv->ops = &mv6xxx_ops;
2976 hp_flags |= MV_HP_GEN_IIE;
2977 if (board_idx == chip_6042 && mv_pci_cut_through_okay(host))
2978 hp_flags |= MV_HP_CUT_THROUGH;
2980 switch (pdev->revision) {
2982 hp_flags |= MV_HP_ERRATA_XX42A0;
2985 hp_flags |= MV_HP_ERRATA_60X1C0;
2988 dev_printk(KERN_WARNING, &pdev->dev,
2989 "Applying 60X1C0 workarounds to unknown rev\n");
2990 hp_flags |= MV_HP_ERRATA_60X1C0;
2995 hpriv->ops = &mv_soc_ops;
2996 hp_flags |= MV_HP_ERRATA_60X1C0;
3000 dev_printk(KERN_ERR, host->dev,
3001 "BUG: invalid board index %u\n", board_idx);
3005 hpriv->hp_flags = hp_flags;
3006 if (hp_flags & MV_HP_PCIE) {
3007 hpriv->irq_cause_ofs = PCIE_IRQ_CAUSE_OFS;
3008 hpriv->irq_mask_ofs = PCIE_IRQ_MASK_OFS;
3009 hpriv->unmask_all_irqs = PCIE_UNMASK_ALL_IRQS;
3011 hpriv->irq_cause_ofs = PCI_IRQ_CAUSE_OFS;
3012 hpriv->irq_mask_ofs = PCI_IRQ_MASK_OFS;
3013 hpriv->unmask_all_irqs = PCI_UNMASK_ALL_IRQS;
3020 * mv_init_host - Perform some early initialization of the host.
3021 * @host: ATA host to initialize
3022 * @board_idx: controller index
3024 * If possible, do an early global reset of the host. Then do
3025 * our port init and clear/unmask all/relevant host interrupts.
3028 * Inherited from caller.
3030 static int mv_init_host(struct ata_host *host, unsigned int board_idx)
3032 int rc = 0, n_hc, port, hc;
3033 struct mv_host_priv *hpriv = host->private_data;
3034 void __iomem *mmio = hpriv->base;
3036 rc = mv_chip_id(host, board_idx);
3040 if (HAS_PCI(host)) {
3041 hpriv->main_irq_cause_addr = mmio + PCI_HC_MAIN_IRQ_CAUSE_OFS;
3042 hpriv->main_irq_mask_addr = mmio + PCI_HC_MAIN_IRQ_MASK_OFS;
3044 hpriv->main_irq_cause_addr = mmio + SOC_HC_MAIN_IRQ_CAUSE_OFS;
3045 hpriv->main_irq_mask_addr = mmio + SOC_HC_MAIN_IRQ_MASK_OFS;
3048 /* global interrupt mask: 0 == mask everything */
3049 writel(0, hpriv->main_irq_mask_addr);
3051 n_hc = mv_get_hc_count(host->ports[0]->flags);
3053 for (port = 0; port < host->n_ports; port++)
3054 hpriv->ops->read_preamp(hpriv, port, mmio);
3056 rc = hpriv->ops->reset_hc(hpriv, mmio, n_hc);
3060 hpriv->ops->reset_flash(hpriv, mmio);
3061 hpriv->ops->reset_bus(host, mmio);
3062 hpriv->ops->enable_leds(hpriv, mmio);
3064 for (port = 0; port < host->n_ports; port++) {
3065 struct ata_port *ap = host->ports[port];
3066 void __iomem *port_mmio = mv_port_base(mmio, port);
3068 mv_port_init(&ap->ioaddr, port_mmio);
3071 if (HAS_PCI(host)) {
3072 unsigned int offset = port_mmio - mmio;
3073 ata_port_pbar_desc(ap, MV_PRIMARY_BAR, -1, "mmio");
3074 ata_port_pbar_desc(ap, MV_PRIMARY_BAR, offset, "port");
3079 for (hc = 0; hc < n_hc; hc++) {
3080 void __iomem *hc_mmio = mv_hc_base(mmio, hc);
3082 VPRINTK("HC%i: HC config=0x%08x HC IRQ cause "
3083 "(before clear)=0x%08x\n", hc,
3084 readl(hc_mmio + HC_CFG_OFS),
3085 readl(hc_mmio + HC_IRQ_CAUSE_OFS));
3087 /* Clear any currently outstanding hc interrupt conditions */
3088 writelfl(0, hc_mmio + HC_IRQ_CAUSE_OFS);
3091 if (HAS_PCI(host)) {
3092 /* Clear any currently outstanding host interrupt conditions */
3093 writelfl(0, mmio + hpriv->irq_cause_ofs);
3095 /* and unmask interrupt generation for host regs */
3096 writelfl(hpriv->unmask_all_irqs, mmio + hpriv->irq_mask_ofs);
3099 * enable only global host interrupts for now.
3100 * The per-port interrupts get done later as ports are set up.
3102 writelfl(PCI_ERR, hpriv->main_irq_mask_addr);
3108 static int mv_create_dma_pools(struct mv_host_priv *hpriv, struct device *dev)
3110 hpriv->crqb_pool = dmam_pool_create("crqb_q", dev, MV_CRQB_Q_SZ,
3112 if (!hpriv->crqb_pool)
3115 hpriv->crpb_pool = dmam_pool_create("crpb_q", dev, MV_CRPB_Q_SZ,
3117 if (!hpriv->crpb_pool)
3120 hpriv->sg_tbl_pool = dmam_pool_create("sg_tbl", dev, MV_SG_TBL_SZ,
3122 if (!hpriv->sg_tbl_pool)
3128 static void mv_conf_mbus_windows(struct mv_host_priv *hpriv,
3129 struct mbus_dram_target_info *dram)
3133 for (i = 0; i < 4; i++) {
3134 writel(0, hpriv->base + WINDOW_CTRL(i));
3135 writel(0, hpriv->base + WINDOW_BASE(i));
3138 for (i = 0; i < dram->num_cs; i++) {
3139 struct mbus_dram_window *cs = dram->cs + i;
3141 writel(((cs->size - 1) & 0xffff0000) |
3142 (cs->mbus_attr << 8) |
3143 (dram->mbus_dram_target_id << 4) | 1,
3144 hpriv->base + WINDOW_CTRL(i));
3145 writel(cs->base, hpriv->base + WINDOW_BASE(i));
3150 * mv_platform_probe - handle a positive probe of an soc Marvell
3152 * @pdev: platform device found
3155 * Inherited from caller.
3157 static int mv_platform_probe(struct platform_device *pdev)
3159 static int printed_version;
3160 const struct mv_sata_platform_data *mv_platform_data;
3161 const struct ata_port_info *ppi[] =
3162 { &mv_port_info[chip_soc], NULL };
3163 struct ata_host *host;
3164 struct mv_host_priv *hpriv;
3165 struct resource *res;
3168 if (!printed_version++)
3169 dev_printk(KERN_INFO, &pdev->dev, "version " DRV_VERSION "\n");
3172 * Simple resource validation ..
3174 if (unlikely(pdev->num_resources != 2)) {
3175 dev_err(&pdev->dev, "invalid number of resources\n");
3180 * Get the register base first
3182 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
3187 mv_platform_data = pdev->dev.platform_data;
3188 n_ports = mv_platform_data->n_ports;
3190 host = ata_host_alloc_pinfo(&pdev->dev, ppi, n_ports);
3191 hpriv = devm_kzalloc(&pdev->dev, sizeof(*hpriv), GFP_KERNEL);
3193 if (!host || !hpriv)
3195 host->private_data = hpriv;
3196 hpriv->n_ports = n_ports;
3199 hpriv->base = devm_ioremap(&pdev->dev, res->start,
3200 res->end - res->start + 1);
3201 hpriv->base -= MV_SATAHC0_REG_BASE;
3204 * (Re-)program MBUS remapping windows if we are asked to.
3206 if (mv_platform_data->dram != NULL)
3207 mv_conf_mbus_windows(hpriv, mv_platform_data->dram);
3209 rc = mv_create_dma_pools(hpriv, &pdev->dev);
3213 /* initialize adapter */
3214 rc = mv_init_host(host, chip_soc);
3218 dev_printk(KERN_INFO, &pdev->dev,
3219 "slots %u ports %d\n", (unsigned)MV_MAX_Q_DEPTH,
3222 return ata_host_activate(host, platform_get_irq(pdev, 0), mv_interrupt,
3223 IRQF_SHARED, &mv6_sht);
3228 * mv_platform_remove - unplug a platform interface
3229 * @pdev: platform device
3231 * A platform bus SATA device has been unplugged. Perform the needed
3232 * cleanup. Also called on module unload for any active devices.
3234 static int __devexit mv_platform_remove(struct platform_device *pdev)
3236 struct device *dev = &pdev->dev;
3237 struct ata_host *host = dev_get_drvdata(dev);
3239 ata_host_detach(host);
3243 static struct platform_driver mv_platform_driver = {
3244 .probe = mv_platform_probe,
3245 .remove = __devexit_p(mv_platform_remove),
3248 .owner = THIS_MODULE,
3254 static int mv_pci_init_one(struct pci_dev *pdev,
3255 const struct pci_device_id *ent);
3258 static struct pci_driver mv_pci_driver = {
3260 .id_table = mv_pci_tbl,
3261 .probe = mv_pci_init_one,
3262 .remove = ata_pci_remove_one,
3268 static int msi; /* Use PCI msi; either zero (off, default) or non-zero */
3271 /* move to PCI layer or libata core? */
3272 static int pci_go_64(struct pci_dev *pdev)
3276 if (!pci_set_dma_mask(pdev, DMA_64BIT_MASK)) {
3277 rc = pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK);
3279 rc = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
3281 dev_printk(KERN_ERR, &pdev->dev,
3282 "64-bit DMA enable failed\n");
3287 rc = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
3289 dev_printk(KERN_ERR, &pdev->dev,
3290 "32-bit DMA enable failed\n");
3293 rc = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
3295 dev_printk(KERN_ERR, &pdev->dev,
3296 "32-bit consistent DMA enable failed\n");
3305 * mv_print_info - Dump key info to kernel log for perusal.
3306 * @host: ATA host to print info about
3308 * FIXME: complete this.
3311 * Inherited from caller.
3313 static void mv_print_info(struct ata_host *host)
3315 struct pci_dev *pdev = to_pci_dev(host->dev);
3316 struct mv_host_priv *hpriv = host->private_data;
3318 const char *scc_s, *gen;
3320 /* Use this to determine the HW stepping of the chip so we know
3321 * what errata to workaround
3323 pci_read_config_byte(pdev, PCI_CLASS_DEVICE, &scc);
3326 else if (scc == 0x01)
3331 if (IS_GEN_I(hpriv))
3333 else if (IS_GEN_II(hpriv))
3335 else if (IS_GEN_IIE(hpriv))
3340 dev_printk(KERN_INFO, &pdev->dev,
3341 "Gen-%s %u slots %u ports %s mode IRQ via %s\n",
3342 gen, (unsigned)MV_MAX_Q_DEPTH, host->n_ports,
3343 scc_s, (MV_HP_FLAG_MSI & hpriv->hp_flags) ? "MSI" : "INTx");
3347 * mv_pci_init_one - handle a positive probe of a PCI Marvell host
3348 * @pdev: PCI device found
3349 * @ent: PCI device ID entry for the matched host
3352 * Inherited from caller.
3354 static int mv_pci_init_one(struct pci_dev *pdev,
3355 const struct pci_device_id *ent)
3357 static int printed_version;
3358 unsigned int board_idx = (unsigned int)ent->driver_data;
3359 const struct ata_port_info *ppi[] = { &mv_port_info[board_idx], NULL };
3360 struct ata_host *host;
3361 struct mv_host_priv *hpriv;
3364 if (!printed_version++)
3365 dev_printk(KERN_INFO, &pdev->dev, "version " DRV_VERSION "\n");
3368 n_ports = mv_get_hc_count(ppi[0]->flags) * MV_PORTS_PER_HC;
3370 host = ata_host_alloc_pinfo(&pdev->dev, ppi, n_ports);
3371 hpriv = devm_kzalloc(&pdev->dev, sizeof(*hpriv), GFP_KERNEL);
3372 if (!host || !hpriv)
3374 host->private_data = hpriv;
3375 hpriv->n_ports = n_ports;
3377 /* acquire resources */
3378 rc = pcim_enable_device(pdev);
3382 rc = pcim_iomap_regions(pdev, 1 << MV_PRIMARY_BAR, DRV_NAME);
3384 pcim_pin_device(pdev);
3387 host->iomap = pcim_iomap_table(pdev);
3388 hpriv->base = host->iomap[MV_PRIMARY_BAR];
3390 rc = pci_go_64(pdev);
3394 rc = mv_create_dma_pools(hpriv, &pdev->dev);
3398 /* initialize adapter */
3399 rc = mv_init_host(host, board_idx);
3403 /* Enable interrupts */
3404 if (msi && pci_enable_msi(pdev))
3407 mv_dump_pci_cfg(pdev, 0x68);
3408 mv_print_info(host);
3410 pci_set_master(pdev);
3411 pci_try_set_mwi(pdev);
3412 return ata_host_activate(host, pdev->irq, mv_interrupt, IRQF_SHARED,
3413 IS_GEN_I(hpriv) ? &mv5_sht : &mv6_sht);
3417 static int mv_platform_probe(struct platform_device *pdev);
3418 static int __devexit mv_platform_remove(struct platform_device *pdev);
3420 static int __init mv_init(void)
3424 rc = pci_register_driver(&mv_pci_driver);
3428 rc = platform_driver_register(&mv_platform_driver);
3432 pci_unregister_driver(&mv_pci_driver);
3437 static void __exit mv_exit(void)
3440 pci_unregister_driver(&mv_pci_driver);
3442 platform_driver_unregister(&mv_platform_driver);
3445 MODULE_AUTHOR("Brett Russ");
3446 MODULE_DESCRIPTION("SCSI low-level driver for Marvell SATA controllers");
3447 MODULE_LICENSE("GPL");
3448 MODULE_DEVICE_TABLE(pci, mv_pci_tbl);
3449 MODULE_VERSION(DRV_VERSION);
3450 MODULE_ALIAS("platform:" DRV_NAME);
3453 module_param(msi, int, 0444);
3454 MODULE_PARM_DESC(msi, "Enable use of PCI MSI (0=off, 1=on)");
3457 module_init(mv_init);
3458 module_exit(mv_exit);