2 * sata_mv.c - Marvell SATA support
4 * Copyright 2008-2009: Marvell Corporation, all rights reserved.
5 * Copyright 2005: EMC Corporation, all rights reserved.
6 * Copyright 2005 Red Hat, Inc. All rights reserved.
8 * Originally written by Brett Russ.
9 * Extensive overhaul and enhancement by Mark Lord <mlord@pobox.com>.
11 * Please ALWAYS copy linux-ide@vger.kernel.org on emails.
13 * This program is free software; you can redistribute it and/or modify
14 * it under the terms of the GNU General Public License as published by
15 * the Free Software Foundation; version 2 of the License.
17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, write to the Free Software
24 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
31 * --> Develop a low-power-consumption strategy, and implement it.
33 * --> Add sysfs attributes for per-chip / per-HC IRQ coalescing thresholds.
35 * --> [Experiment, Marvell value added] Is it possible to use target
36 * mode to cross-connect two Linux boxes with Marvell cards? If so,
37 * creating LibATA target mode support would be very interesting.
39 * Target mode, for those without docs, is the ability to directly
40 * connect two SATA ports.
44 * 80x1-B2 errata PCI#11:
46 * Users of the 6041/6081 Rev.B2 chips (current is C0)
47 * should be careful to insert those cards only onto PCI-X bus #0,
48 * and only in device slots 0..7, not higher. The chips may not
49 * work correctly otherwise (note: this is a pretty rare condition).
52 #include <linux/kernel.h>
53 #include <linux/module.h>
54 #include <linux/pci.h>
55 #include <linux/init.h>
56 #include <linux/blkdev.h>
57 #include <linux/delay.h>
58 #include <linux/interrupt.h>
59 #include <linux/dmapool.h>
60 #include <linux/dma-mapping.h>
61 #include <linux/device.h>
62 #include <linux/clk.h>
63 #include <linux/platform_device.h>
64 #include <linux/ata_platform.h>
65 #include <linux/mbus.h>
66 #include <linux/bitops.h>
67 #include <scsi/scsi_host.h>
68 #include <scsi/scsi_cmnd.h>
69 #include <scsi/scsi_device.h>
70 #include <linux/libata.h>
72 #define DRV_NAME "sata_mv"
73 #define DRV_VERSION "1.28"
81 module_param(msi, int, S_IRUGO);
82 MODULE_PARM_DESC(msi, "Enable use of PCI MSI (0=off, 1=on)");
85 static int irq_coalescing_io_count;
86 module_param(irq_coalescing_io_count, int, S_IRUGO);
87 MODULE_PARM_DESC(irq_coalescing_io_count,
88 "IRQ coalescing I/O count threshold (0..255)");
90 static int irq_coalescing_usecs;
91 module_param(irq_coalescing_usecs, int, S_IRUGO);
92 MODULE_PARM_DESC(irq_coalescing_usecs,
93 "IRQ coalescing time threshold in usecs");
96 /* BAR's are enumerated in terms of pci_resource_start() terms */
97 MV_PRIMARY_BAR = 0, /* offset 0x10: memory space */
98 MV_IO_BAR = 2, /* offset 0x18: IO space */
99 MV_MISC_BAR = 3, /* offset 0x1c: FLASH, NVRAM, SRAM */
101 MV_MAJOR_REG_AREA_SZ = 0x10000, /* 64KB */
102 MV_MINOR_REG_AREA_SZ = 0x2000, /* 8KB */
104 /* For use with both IRQ coalescing methods ("all ports" or "per-HC" */
105 COAL_CLOCKS_PER_USEC = 150, /* for calculating COAL_TIMEs */
106 MAX_COAL_TIME_THRESHOLD = ((1 << 24) - 1), /* internal clocks count */
107 MAX_COAL_IO_COUNT = 255, /* completed I/O count */
112 * Per-chip ("all ports") interrupt coalescing feature.
113 * This is only for GEN_II / GEN_IIE hardware.
115 * Coalescing defers the interrupt until either the IO_THRESHOLD
116 * (count of completed I/Os) is met, or the TIME_THRESHOLD is met.
118 COAL_REG_BASE = 0x18000,
119 IRQ_COAL_CAUSE = (COAL_REG_BASE + 0x08),
120 ALL_PORTS_COAL_IRQ = (1 << 4), /* all ports irq event */
122 IRQ_COAL_IO_THRESHOLD = (COAL_REG_BASE + 0xcc),
123 IRQ_COAL_TIME_THRESHOLD = (COAL_REG_BASE + 0xd0),
126 * Registers for the (unused here) transaction coalescing feature:
128 TRAN_COAL_CAUSE_LO = (COAL_REG_BASE + 0x88),
129 TRAN_COAL_CAUSE_HI = (COAL_REG_BASE + 0x8c),
131 SATAHC0_REG_BASE = 0x20000,
133 GPIO_PORT_CTL = 0x104f0,
136 MV_PCI_REG_SZ = MV_MAJOR_REG_AREA_SZ,
137 MV_SATAHC_REG_SZ = MV_MAJOR_REG_AREA_SZ,
138 MV_SATAHC_ARBTR_REG_SZ = MV_MINOR_REG_AREA_SZ, /* arbiter */
139 MV_PORT_REG_SZ = MV_MINOR_REG_AREA_SZ,
142 MV_MAX_Q_DEPTH_MASK = MV_MAX_Q_DEPTH - 1,
144 /* CRQB needs alignment on a 1KB boundary. Size == 1KB
145 * CRPB needs alignment on a 256B boundary. Size == 256B
146 * ePRD (SG) entries need alignment on a 16B boundary. Size == 16B
148 MV_CRQB_Q_SZ = (32 * MV_MAX_Q_DEPTH),
149 MV_CRPB_Q_SZ = (8 * MV_MAX_Q_DEPTH),
151 MV_SG_TBL_SZ = (16 * MV_MAX_SG_CT),
153 /* Determine hc from 0-7 port: hc = port >> MV_PORT_HC_SHIFT */
154 MV_PORT_HC_SHIFT = 2,
155 MV_PORTS_PER_HC = (1 << MV_PORT_HC_SHIFT), /* 4 */
156 /* Determine hc port from 0-7 port: hardport = port & MV_PORT_MASK */
157 MV_PORT_MASK = (MV_PORTS_PER_HC - 1), /* 3 */
160 MV_FLAG_DUAL_HC = (1 << 30), /* two SATA Host Controllers */
162 MV_COMMON_FLAGS = ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
163 ATA_FLAG_MMIO | ATA_FLAG_PIO_POLLING,
165 MV_GEN_I_FLAGS = MV_COMMON_FLAGS | ATA_FLAG_NO_ATAPI,
167 MV_GEN_II_FLAGS = MV_COMMON_FLAGS | ATA_FLAG_NCQ |
168 ATA_FLAG_PMP | ATA_FLAG_ACPI_SATA,
170 MV_GEN_IIE_FLAGS = MV_GEN_II_FLAGS | ATA_FLAG_AN,
172 CRQB_FLAG_READ = (1 << 0),
174 CRQB_IOID_SHIFT = 6, /* CRQB Gen-II/IIE IO Id shift */
175 CRQB_PMP_SHIFT = 12, /* CRQB Gen-II/IIE PMP shift */
176 CRQB_HOSTQ_SHIFT = 17, /* CRQB Gen-II/IIE HostQueTag shift */
177 CRQB_CMD_ADDR_SHIFT = 8,
178 CRQB_CMD_CS = (0x2 << 11),
179 CRQB_CMD_LAST = (1 << 15),
181 CRPB_FLAG_STATUS_SHIFT = 8,
182 CRPB_IOID_SHIFT_6 = 5, /* CRPB Gen-II IO Id shift */
183 CRPB_IOID_SHIFT_7 = 7, /* CRPB Gen-IIE IO Id shift */
185 EPRD_FLAG_END_OF_TBL = (1 << 31),
187 /* PCI interface registers */
189 MV_PCI_COMMAND = 0xc00,
190 MV_PCI_COMMAND_MWRCOM = (1 << 4), /* PCI Master Write Combining */
191 MV_PCI_COMMAND_MRDTRIG = (1 << 7), /* PCI Master Read Trigger */
193 PCI_MAIN_CMD_STS = 0xd30,
194 STOP_PCI_MASTER = (1 << 2),
195 PCI_MASTER_EMPTY = (1 << 3),
196 GLOB_SFT_RST = (1 << 4),
199 MV_PCI_MODE_MASK = 0x30,
201 MV_PCI_EXP_ROM_BAR_CTL = 0xd2c,
202 MV_PCI_DISC_TIMER = 0xd04,
203 MV_PCI_MSI_TRIGGER = 0xc38,
204 MV_PCI_SERR_MASK = 0xc28,
205 MV_PCI_XBAR_TMOUT = 0x1d04,
206 MV_PCI_ERR_LOW_ADDRESS = 0x1d40,
207 MV_PCI_ERR_HIGH_ADDRESS = 0x1d44,
208 MV_PCI_ERR_ATTRIBUTE = 0x1d48,
209 MV_PCI_ERR_COMMAND = 0x1d50,
211 PCI_IRQ_CAUSE = 0x1d58,
212 PCI_IRQ_MASK = 0x1d5c,
213 PCI_UNMASK_ALL_IRQS = 0x7fffff, /* bits 22-0 */
215 PCIE_IRQ_CAUSE = 0x1900,
216 PCIE_IRQ_MASK = 0x1910,
217 PCIE_UNMASK_ALL_IRQS = 0x40a, /* assorted bits */
219 /* Host Controller Main Interrupt Cause/Mask registers (1 per-chip) */
220 PCI_HC_MAIN_IRQ_CAUSE = 0x1d60,
221 PCI_HC_MAIN_IRQ_MASK = 0x1d64,
222 SOC_HC_MAIN_IRQ_CAUSE = 0x20020,
223 SOC_HC_MAIN_IRQ_MASK = 0x20024,
224 ERR_IRQ = (1 << 0), /* shift by (2 * port #) */
225 DONE_IRQ = (1 << 1), /* shift by (2 * port #) */
226 HC0_IRQ_PEND = 0x1ff, /* bits 0-8 = HC0's ports */
227 HC_SHIFT = 9, /* bits 9-17 = HC1's ports */
228 DONE_IRQ_0_3 = 0x000000aa, /* DONE_IRQ ports 0,1,2,3 */
229 DONE_IRQ_4_7 = (DONE_IRQ_0_3 << HC_SHIFT), /* 4,5,6,7 */
231 TRAN_COAL_LO_DONE = (1 << 19), /* transaction coalescing */
232 TRAN_COAL_HI_DONE = (1 << 20), /* transaction coalescing */
233 PORTS_0_3_COAL_DONE = (1 << 8), /* HC0 IRQ coalescing */
234 PORTS_4_7_COAL_DONE = (1 << 17), /* HC1 IRQ coalescing */
235 ALL_PORTS_COAL_DONE = (1 << 21), /* GEN_II(E) IRQ coalescing */
236 GPIO_INT = (1 << 22),
237 SELF_INT = (1 << 23),
238 TWSI_INT = (1 << 24),
239 HC_MAIN_RSVD = (0x7f << 25), /* bits 31-25 */
240 HC_MAIN_RSVD_5 = (0x1fff << 19), /* bits 31-19 */
241 HC_MAIN_RSVD_SOC = (0x3fffffb << 6), /* bits 31-9, 7-6 */
243 /* SATAHC registers */
247 DMA_IRQ = (1 << 0), /* shift by port # */
248 HC_COAL_IRQ = (1 << 4), /* IRQ coalescing */
249 DEV_IRQ = (1 << 8), /* shift by port # */
252 * Per-HC (Host-Controller) interrupt coalescing feature.
253 * This is present on all chip generations.
255 * Coalescing defers the interrupt until either the IO_THRESHOLD
256 * (count of completed I/Os) is met, or the TIME_THRESHOLD is met.
258 HC_IRQ_COAL_IO_THRESHOLD = 0x000c,
259 HC_IRQ_COAL_TIME_THRESHOLD = 0x0010,
262 SOC_LED_CTRL_BLINK = (1 << 0), /* Active LED blink */
263 SOC_LED_CTRL_ACT_PRESENCE = (1 << 2), /* Multiplex dev presence */
264 /* with dev activity LED */
266 /* Shadow block registers */
268 SHD_CTL_AST = 0x20, /* ofs from SHD_BLK */
271 SATA_STATUS = 0x300, /* ctrl, err regs follow status */
273 FIS_IRQ_CAUSE = 0x364,
274 FIS_IRQ_CAUSE_AN = (1 << 9), /* async notification */
276 LTMODE = 0x30c, /* requires read-after-write */
277 LTMODE_BIT8 = (1 << 8), /* unknown, but necessary */
282 PHY_MODE4 = 0x314, /* requires read-after-write */
283 PHY_MODE4_CFG_MASK = 0x00000003, /* phy internal config field */
284 PHY_MODE4_CFG_VALUE = 0x00000001, /* phy internal config field */
285 PHY_MODE4_RSVD_ZEROS = 0x5de3fffa, /* Gen2e always write zeros */
286 PHY_MODE4_RSVD_ONES = 0x00000005, /* Gen2e always write ones */
289 SATA_TESTCTL = 0x348,
291 VENDOR_UNIQUE_FIS = 0x35c,
294 FISCFG_WAIT_DEV_ERR = (1 << 8), /* wait for host on DevErr */
295 FISCFG_SINGLE_SYNC = (1 << 16), /* SYNC on DMA activation */
297 PHY_MODE9_GEN2 = 0x398,
298 PHY_MODE9_GEN1 = 0x39c,
299 PHYCFG_OFS = 0x3a0, /* only in 65n devices */
306 MV_M2_PREAMP_MASK = 0x7e0,
310 EDMA_CFG_Q_DEPTH = 0x1f, /* max device queue depth */
311 EDMA_CFG_NCQ = (1 << 5), /* for R/W FPDMA queued */
312 EDMA_CFG_NCQ_GO_ON_ERR = (1 << 14), /* continue on error */
313 EDMA_CFG_RD_BRST_EXT = (1 << 11), /* read burst 512B */
314 EDMA_CFG_WR_BUFF_LEN = (1 << 13), /* write buffer 512B */
315 EDMA_CFG_EDMA_FBS = (1 << 16), /* EDMA FIS-Based Switching */
316 EDMA_CFG_FBS = (1 << 26), /* FIS-Based Switching */
318 EDMA_ERR_IRQ_CAUSE = 0x8,
319 EDMA_ERR_IRQ_MASK = 0xc,
320 EDMA_ERR_D_PAR = (1 << 0), /* UDMA data parity err */
321 EDMA_ERR_PRD_PAR = (1 << 1), /* UDMA PRD parity err */
322 EDMA_ERR_DEV = (1 << 2), /* device error */
323 EDMA_ERR_DEV_DCON = (1 << 3), /* device disconnect */
324 EDMA_ERR_DEV_CON = (1 << 4), /* device connected */
325 EDMA_ERR_SERR = (1 << 5), /* SError bits [WBDST] raised */
326 EDMA_ERR_SELF_DIS = (1 << 7), /* Gen II/IIE self-disable */
327 EDMA_ERR_SELF_DIS_5 = (1 << 8), /* Gen I self-disable */
328 EDMA_ERR_BIST_ASYNC = (1 << 8), /* BIST FIS or Async Notify */
329 EDMA_ERR_TRANS_IRQ_7 = (1 << 8), /* Gen IIE transprt layer irq */
330 EDMA_ERR_CRQB_PAR = (1 << 9), /* CRQB parity error */
331 EDMA_ERR_CRPB_PAR = (1 << 10), /* CRPB parity error */
332 EDMA_ERR_INTRL_PAR = (1 << 11), /* internal parity error */
333 EDMA_ERR_IORDY = (1 << 12), /* IORdy timeout */
335 EDMA_ERR_LNK_CTRL_RX = (0xf << 13), /* link ctrl rx error */
336 EDMA_ERR_LNK_CTRL_RX_0 = (1 << 13), /* transient: CRC err */
337 EDMA_ERR_LNK_CTRL_RX_1 = (1 << 14), /* transient: FIFO err */
338 EDMA_ERR_LNK_CTRL_RX_2 = (1 << 15), /* fatal: caught SYNC */
339 EDMA_ERR_LNK_CTRL_RX_3 = (1 << 16), /* transient: FIS rx err */
341 EDMA_ERR_LNK_DATA_RX = (0xf << 17), /* link data rx error */
343 EDMA_ERR_LNK_CTRL_TX = (0x1f << 21), /* link ctrl tx error */
344 EDMA_ERR_LNK_CTRL_TX_0 = (1 << 21), /* transient: CRC err */
345 EDMA_ERR_LNK_CTRL_TX_1 = (1 << 22), /* transient: FIFO err */
346 EDMA_ERR_LNK_CTRL_TX_2 = (1 << 23), /* transient: caught SYNC */
347 EDMA_ERR_LNK_CTRL_TX_3 = (1 << 24), /* transient: caught DMAT */
348 EDMA_ERR_LNK_CTRL_TX_4 = (1 << 25), /* transient: FIS collision */
350 EDMA_ERR_LNK_DATA_TX = (0x1f << 26), /* link data tx error */
352 EDMA_ERR_TRANS_PROTO = (1 << 31), /* transport protocol error */
353 EDMA_ERR_OVERRUN_5 = (1 << 5),
354 EDMA_ERR_UNDERRUN_5 = (1 << 6),
356 EDMA_ERR_IRQ_TRANSIENT = EDMA_ERR_LNK_CTRL_RX_0 |
357 EDMA_ERR_LNK_CTRL_RX_1 |
358 EDMA_ERR_LNK_CTRL_RX_3 |
359 EDMA_ERR_LNK_CTRL_TX,
361 EDMA_EH_FREEZE = EDMA_ERR_D_PAR |
371 EDMA_ERR_LNK_CTRL_RX_2 |
372 EDMA_ERR_LNK_DATA_RX |
373 EDMA_ERR_LNK_DATA_TX |
374 EDMA_ERR_TRANS_PROTO,
376 EDMA_EH_FREEZE_5 = EDMA_ERR_D_PAR |
381 EDMA_ERR_UNDERRUN_5 |
382 EDMA_ERR_SELF_DIS_5 |
388 EDMA_REQ_Q_BASE_HI = 0x10,
389 EDMA_REQ_Q_IN_PTR = 0x14, /* also contains BASE_LO */
391 EDMA_REQ_Q_OUT_PTR = 0x18,
392 EDMA_REQ_Q_PTR_SHIFT = 5,
394 EDMA_RSP_Q_BASE_HI = 0x1c,
395 EDMA_RSP_Q_IN_PTR = 0x20,
396 EDMA_RSP_Q_OUT_PTR = 0x24, /* also contains BASE_LO */
397 EDMA_RSP_Q_PTR_SHIFT = 3,
399 EDMA_CMD = 0x28, /* EDMA command register */
400 EDMA_EN = (1 << 0), /* enable EDMA */
401 EDMA_DS = (1 << 1), /* disable EDMA; self-negated */
402 EDMA_RESET = (1 << 2), /* reset eng/trans/link/phy */
404 EDMA_STATUS = 0x30, /* EDMA engine status */
405 EDMA_STATUS_CACHE_EMPTY = (1 << 6), /* GenIIe command cache empty */
406 EDMA_STATUS_IDLE = (1 << 7), /* GenIIe EDMA enabled/idle */
408 EDMA_IORDY_TMOUT = 0x34,
411 EDMA_HALTCOND = 0x60, /* GenIIe halt conditions */
412 EDMA_UNKNOWN_RSVD = 0x6C, /* GenIIe unknown/reserved */
414 BMDMA_CMD = 0x224, /* bmdma command register */
415 BMDMA_STATUS = 0x228, /* bmdma status register */
416 BMDMA_PRD_LOW = 0x22c, /* bmdma PRD addr 31:0 */
417 BMDMA_PRD_HIGH = 0x230, /* bmdma PRD addr 63:32 */
419 /* Host private flags (hp_flags) */
420 MV_HP_FLAG_MSI = (1 << 0),
421 MV_HP_ERRATA_50XXB0 = (1 << 1),
422 MV_HP_ERRATA_50XXB2 = (1 << 2),
423 MV_HP_ERRATA_60X1B2 = (1 << 3),
424 MV_HP_ERRATA_60X1C0 = (1 << 4),
425 MV_HP_GEN_I = (1 << 6), /* Generation I: 50xx */
426 MV_HP_GEN_II = (1 << 7), /* Generation II: 60xx */
427 MV_HP_GEN_IIE = (1 << 8), /* Generation IIE: 6042/7042 */
428 MV_HP_PCIE = (1 << 9), /* PCIe bus/regs: 7042 */
429 MV_HP_CUT_THROUGH = (1 << 10), /* can use EDMA cut-through */
430 MV_HP_FLAG_SOC = (1 << 11), /* SystemOnChip, no PCI */
431 MV_HP_QUIRK_LED_BLINK_EN = (1 << 12), /* is led blinking enabled? */
433 /* Port private flags (pp_flags) */
434 MV_PP_FLAG_EDMA_EN = (1 << 0), /* is EDMA engine enabled? */
435 MV_PP_FLAG_NCQ_EN = (1 << 1), /* is EDMA set up for NCQ? */
436 MV_PP_FLAG_FBS_EN = (1 << 2), /* is EDMA set up for FBS? */
437 MV_PP_FLAG_DELAYED_EH = (1 << 3), /* delayed dev err handling */
438 MV_PP_FLAG_FAKE_ATA_BUSY = (1 << 4), /* ignore initial ATA_DRDY */
441 #define IS_GEN_I(hpriv) ((hpriv)->hp_flags & MV_HP_GEN_I)
442 #define IS_GEN_II(hpriv) ((hpriv)->hp_flags & MV_HP_GEN_II)
443 #define IS_GEN_IIE(hpriv) ((hpriv)->hp_flags & MV_HP_GEN_IIE)
444 #define IS_PCIE(hpriv) ((hpriv)->hp_flags & MV_HP_PCIE)
445 #define IS_SOC(hpriv) ((hpriv)->hp_flags & MV_HP_FLAG_SOC)
447 #define WINDOW_CTRL(i) (0x20030 + ((i) << 4))
448 #define WINDOW_BASE(i) (0x20034 + ((i) << 4))
451 /* DMA boundary 0xffff is required by the s/g splitting
452 * we need on /length/ in mv_fill-sg().
454 MV_DMA_BOUNDARY = 0xffffU,
456 /* mask of register bits containing lower 32 bits
457 * of EDMA request queue DMA address
459 EDMA_REQ_Q_BASE_LO_MASK = 0xfffffc00U,
461 /* ditto, for response queue */
462 EDMA_RSP_Q_BASE_LO_MASK = 0xffffff00U,
476 /* Command ReQuest Block: 32B */
492 /* Command ResPonse Block: 8B */
499 /* EDMA Physical Region Descriptor (ePRD); A.K.A. SG */
508 * We keep a local cache of a few frequently accessed port
509 * registers here, to avoid having to read them (very slow)
510 * when switching between EDMA and non-EDMA modes.
512 struct mv_cached_regs {
519 struct mv_port_priv {
520 struct mv_crqb *crqb;
522 struct mv_crpb *crpb;
524 struct mv_sg *sg_tbl[MV_MAX_Q_DEPTH];
525 dma_addr_t sg_tbl_dma[MV_MAX_Q_DEPTH];
527 unsigned int req_idx;
528 unsigned int resp_idx;
531 struct mv_cached_regs cached;
532 unsigned int delayed_eh_pmp_map;
535 struct mv_port_signal {
540 struct mv_host_priv {
543 struct mv_port_signal signal[8];
544 const struct mv_hw_ops *ops;
547 void __iomem *main_irq_cause_addr;
548 void __iomem *main_irq_mask_addr;
549 u32 irq_cause_offset;
553 #if defined(CONFIG_HAVE_CLK)
557 * These consistent DMA memory pools give us guaranteed
558 * alignment for hardware-accessed data structures,
559 * and less memory waste in accomplishing the alignment.
561 struct dma_pool *crqb_pool;
562 struct dma_pool *crpb_pool;
563 struct dma_pool *sg_tbl_pool;
567 void (*phy_errata)(struct mv_host_priv *hpriv, void __iomem *mmio,
569 void (*enable_leds)(struct mv_host_priv *hpriv, void __iomem *mmio);
570 void (*read_preamp)(struct mv_host_priv *hpriv, int idx,
572 int (*reset_hc)(struct mv_host_priv *hpriv, void __iomem *mmio,
574 void (*reset_flash)(struct mv_host_priv *hpriv, void __iomem *mmio);
575 void (*reset_bus)(struct ata_host *host, void __iomem *mmio);
578 static int mv_scr_read(struct ata_link *link, unsigned int sc_reg_in, u32 *val);
579 static int mv_scr_write(struct ata_link *link, unsigned int sc_reg_in, u32 val);
580 static int mv5_scr_read(struct ata_link *link, unsigned int sc_reg_in, u32 *val);
581 static int mv5_scr_write(struct ata_link *link, unsigned int sc_reg_in, u32 val);
582 static int mv_port_start(struct ata_port *ap);
583 static void mv_port_stop(struct ata_port *ap);
584 static int mv_qc_defer(struct ata_queued_cmd *qc);
585 static void mv_qc_prep(struct ata_queued_cmd *qc);
586 static void mv_qc_prep_iie(struct ata_queued_cmd *qc);
587 static unsigned int mv_qc_issue(struct ata_queued_cmd *qc);
588 static int mv_hardreset(struct ata_link *link, unsigned int *class,
589 unsigned long deadline);
590 static void mv_eh_freeze(struct ata_port *ap);
591 static void mv_eh_thaw(struct ata_port *ap);
592 static void mv6_dev_config(struct ata_device *dev);
594 static void mv5_phy_errata(struct mv_host_priv *hpriv, void __iomem *mmio,
596 static void mv5_enable_leds(struct mv_host_priv *hpriv, void __iomem *mmio);
597 static void mv5_read_preamp(struct mv_host_priv *hpriv, int idx,
599 static int mv5_reset_hc(struct mv_host_priv *hpriv, void __iomem *mmio,
601 static void mv5_reset_flash(struct mv_host_priv *hpriv, void __iomem *mmio);
602 static void mv5_reset_bus(struct ata_host *host, void __iomem *mmio);
604 static void mv6_phy_errata(struct mv_host_priv *hpriv, void __iomem *mmio,
606 static void mv6_enable_leds(struct mv_host_priv *hpriv, void __iomem *mmio);
607 static void mv6_read_preamp(struct mv_host_priv *hpriv, int idx,
609 static int mv6_reset_hc(struct mv_host_priv *hpriv, void __iomem *mmio,
611 static void mv6_reset_flash(struct mv_host_priv *hpriv, void __iomem *mmio);
612 static void mv_soc_enable_leds(struct mv_host_priv *hpriv,
614 static void mv_soc_read_preamp(struct mv_host_priv *hpriv, int idx,
616 static int mv_soc_reset_hc(struct mv_host_priv *hpriv,
617 void __iomem *mmio, unsigned int n_hc);
618 static void mv_soc_reset_flash(struct mv_host_priv *hpriv,
620 static void mv_soc_reset_bus(struct ata_host *host, void __iomem *mmio);
621 static void mv_soc_65n_phy_errata(struct mv_host_priv *hpriv,
622 void __iomem *mmio, unsigned int port);
623 static void mv_reset_pci_bus(struct ata_host *host, void __iomem *mmio);
624 static void mv_reset_channel(struct mv_host_priv *hpriv, void __iomem *mmio,
625 unsigned int port_no);
626 static int mv_stop_edma(struct ata_port *ap);
627 static int mv_stop_edma_engine(void __iomem *port_mmio);
628 static void mv_edma_cfg(struct ata_port *ap, int want_ncq, int want_edma);
630 static void mv_pmp_select(struct ata_port *ap, int pmp);
631 static int mv_pmp_hardreset(struct ata_link *link, unsigned int *class,
632 unsigned long deadline);
633 static int mv_softreset(struct ata_link *link, unsigned int *class,
634 unsigned long deadline);
635 static void mv_pmp_error_handler(struct ata_port *ap);
636 static void mv_process_crpb_entries(struct ata_port *ap,
637 struct mv_port_priv *pp);
639 static void mv_sff_irq_clear(struct ata_port *ap);
640 static int mv_check_atapi_dma(struct ata_queued_cmd *qc);
641 static void mv_bmdma_setup(struct ata_queued_cmd *qc);
642 static void mv_bmdma_start(struct ata_queued_cmd *qc);
643 static void mv_bmdma_stop(struct ata_queued_cmd *qc);
644 static u8 mv_bmdma_status(struct ata_port *ap);
645 static u8 mv_sff_check_status(struct ata_port *ap);
647 /* .sg_tablesize is (MV_MAX_SG_CT / 2) in the structures below
648 * because we have to allow room for worst case splitting of
649 * PRDs for 64K boundaries in mv_fill_sg().
651 static struct scsi_host_template mv5_sht = {
652 ATA_BASE_SHT(DRV_NAME),
653 .sg_tablesize = MV_MAX_SG_CT / 2,
654 .dma_boundary = MV_DMA_BOUNDARY,
657 static struct scsi_host_template mv6_sht = {
658 ATA_NCQ_SHT(DRV_NAME),
659 .can_queue = MV_MAX_Q_DEPTH - 1,
660 .sg_tablesize = MV_MAX_SG_CT / 2,
661 .dma_boundary = MV_DMA_BOUNDARY,
664 static struct ata_port_operations mv5_ops = {
665 .inherits = &ata_sff_port_ops,
667 .lost_interrupt = ATA_OP_NULL,
669 .qc_defer = mv_qc_defer,
670 .qc_prep = mv_qc_prep,
671 .qc_issue = mv_qc_issue,
673 .freeze = mv_eh_freeze,
675 .hardreset = mv_hardreset,
676 .error_handler = ata_std_error_handler, /* avoid SFF EH */
677 .post_internal_cmd = ATA_OP_NULL,
679 .scr_read = mv5_scr_read,
680 .scr_write = mv5_scr_write,
682 .port_start = mv_port_start,
683 .port_stop = mv_port_stop,
686 static struct ata_port_operations mv6_ops = {
687 .inherits = &mv5_ops,
688 .dev_config = mv6_dev_config,
689 .scr_read = mv_scr_read,
690 .scr_write = mv_scr_write,
692 .pmp_hardreset = mv_pmp_hardreset,
693 .pmp_softreset = mv_softreset,
694 .softreset = mv_softreset,
695 .error_handler = mv_pmp_error_handler,
697 .sff_check_status = mv_sff_check_status,
698 .sff_irq_clear = mv_sff_irq_clear,
699 .check_atapi_dma = mv_check_atapi_dma,
700 .bmdma_setup = mv_bmdma_setup,
701 .bmdma_start = mv_bmdma_start,
702 .bmdma_stop = mv_bmdma_stop,
703 .bmdma_status = mv_bmdma_status,
706 static struct ata_port_operations mv_iie_ops = {
707 .inherits = &mv6_ops,
708 .dev_config = ATA_OP_NULL,
709 .qc_prep = mv_qc_prep_iie,
712 static const struct ata_port_info mv_port_info[] = {
714 .flags = MV_GEN_I_FLAGS,
715 .pio_mask = ATA_PIO4,
716 .udma_mask = ATA_UDMA6,
717 .port_ops = &mv5_ops,
720 .flags = MV_GEN_I_FLAGS | MV_FLAG_DUAL_HC,
721 .pio_mask = ATA_PIO4,
722 .udma_mask = ATA_UDMA6,
723 .port_ops = &mv5_ops,
726 .flags = MV_GEN_I_FLAGS | MV_FLAG_DUAL_HC,
727 .pio_mask = ATA_PIO4,
728 .udma_mask = ATA_UDMA6,
729 .port_ops = &mv5_ops,
732 .flags = MV_GEN_II_FLAGS,
733 .pio_mask = ATA_PIO4,
734 .udma_mask = ATA_UDMA6,
735 .port_ops = &mv6_ops,
738 .flags = MV_GEN_II_FLAGS | MV_FLAG_DUAL_HC,
739 .pio_mask = ATA_PIO4,
740 .udma_mask = ATA_UDMA6,
741 .port_ops = &mv6_ops,
744 .flags = MV_GEN_IIE_FLAGS,
745 .pio_mask = ATA_PIO4,
746 .udma_mask = ATA_UDMA6,
747 .port_ops = &mv_iie_ops,
750 .flags = MV_GEN_IIE_FLAGS,
751 .pio_mask = ATA_PIO4,
752 .udma_mask = ATA_UDMA6,
753 .port_ops = &mv_iie_ops,
756 .flags = MV_GEN_IIE_FLAGS,
757 .pio_mask = ATA_PIO4,
758 .udma_mask = ATA_UDMA6,
759 .port_ops = &mv_iie_ops,
763 static const struct pci_device_id mv_pci_tbl[] = {
764 { PCI_VDEVICE(MARVELL, 0x5040), chip_504x },
765 { PCI_VDEVICE(MARVELL, 0x5041), chip_504x },
766 { PCI_VDEVICE(MARVELL, 0x5080), chip_5080 },
767 { PCI_VDEVICE(MARVELL, 0x5081), chip_508x },
768 /* RocketRAID 1720/174x have different identifiers */
769 { PCI_VDEVICE(TTI, 0x1720), chip_6042 },
770 { PCI_VDEVICE(TTI, 0x1740), chip_6042 },
771 { PCI_VDEVICE(TTI, 0x1742), chip_6042 },
773 { PCI_VDEVICE(MARVELL, 0x6040), chip_604x },
774 { PCI_VDEVICE(MARVELL, 0x6041), chip_604x },
775 { PCI_VDEVICE(MARVELL, 0x6042), chip_6042 },
776 { PCI_VDEVICE(MARVELL, 0x6080), chip_608x },
777 { PCI_VDEVICE(MARVELL, 0x6081), chip_608x },
779 { PCI_VDEVICE(ADAPTEC2, 0x0241), chip_604x },
782 { PCI_VDEVICE(ADAPTEC2, 0x0243), chip_7042 },
784 /* Marvell 7042 support */
785 { PCI_VDEVICE(MARVELL, 0x7042), chip_7042 },
787 /* Highpoint RocketRAID PCIe series */
788 { PCI_VDEVICE(TTI, 0x2300), chip_7042 },
789 { PCI_VDEVICE(TTI, 0x2310), chip_7042 },
791 { } /* terminate list */
794 static const struct mv_hw_ops mv5xxx_ops = {
795 .phy_errata = mv5_phy_errata,
796 .enable_leds = mv5_enable_leds,
797 .read_preamp = mv5_read_preamp,
798 .reset_hc = mv5_reset_hc,
799 .reset_flash = mv5_reset_flash,
800 .reset_bus = mv5_reset_bus,
803 static const struct mv_hw_ops mv6xxx_ops = {
804 .phy_errata = mv6_phy_errata,
805 .enable_leds = mv6_enable_leds,
806 .read_preamp = mv6_read_preamp,
807 .reset_hc = mv6_reset_hc,
808 .reset_flash = mv6_reset_flash,
809 .reset_bus = mv_reset_pci_bus,
812 static const struct mv_hw_ops mv_soc_ops = {
813 .phy_errata = mv6_phy_errata,
814 .enable_leds = mv_soc_enable_leds,
815 .read_preamp = mv_soc_read_preamp,
816 .reset_hc = mv_soc_reset_hc,
817 .reset_flash = mv_soc_reset_flash,
818 .reset_bus = mv_soc_reset_bus,
821 static const struct mv_hw_ops mv_soc_65n_ops = {
822 .phy_errata = mv_soc_65n_phy_errata,
823 .enable_leds = mv_soc_enable_leds,
824 .reset_hc = mv_soc_reset_hc,
825 .reset_flash = mv_soc_reset_flash,
826 .reset_bus = mv_soc_reset_bus,
833 static inline void writelfl(unsigned long data, void __iomem *addr)
836 (void) readl(addr); /* flush to avoid PCI posted write */
839 static inline unsigned int mv_hc_from_port(unsigned int port)
841 return port >> MV_PORT_HC_SHIFT;
844 static inline unsigned int mv_hardport_from_port(unsigned int port)
846 return port & MV_PORT_MASK;
850 * Consolidate some rather tricky bit shift calculations.
851 * This is hot-path stuff, so not a function.
852 * Simple code, with two return values, so macro rather than inline.
854 * port is the sole input, in range 0..7.
855 * shift is one output, for use with main_irq_cause / main_irq_mask registers.
856 * hardport is the other output, in range 0..3.
858 * Note that port and hardport may be the same variable in some cases.
860 #define MV_PORT_TO_SHIFT_AND_HARDPORT(port, shift, hardport) \
862 shift = mv_hc_from_port(port) * HC_SHIFT; \
863 hardport = mv_hardport_from_port(port); \
864 shift += hardport * 2; \
867 static inline void __iomem *mv_hc_base(void __iomem *base, unsigned int hc)
869 return (base + SATAHC0_REG_BASE + (hc * MV_SATAHC_REG_SZ));
872 static inline void __iomem *mv_hc_base_from_port(void __iomem *base,
875 return mv_hc_base(base, mv_hc_from_port(port));
878 static inline void __iomem *mv_port_base(void __iomem *base, unsigned int port)
880 return mv_hc_base_from_port(base, port) +
881 MV_SATAHC_ARBTR_REG_SZ +
882 (mv_hardport_from_port(port) * MV_PORT_REG_SZ);
885 static void __iomem *mv5_phy_base(void __iomem *mmio, unsigned int port)
887 void __iomem *hc_mmio = mv_hc_base_from_port(mmio, port);
888 unsigned long ofs = (mv_hardport_from_port(port) + 1) * 0x100UL;
890 return hc_mmio + ofs;
893 static inline void __iomem *mv_host_base(struct ata_host *host)
895 struct mv_host_priv *hpriv = host->private_data;
899 static inline void __iomem *mv_ap_base(struct ata_port *ap)
901 return mv_port_base(mv_host_base(ap->host), ap->port_no);
904 static inline int mv_get_hc_count(unsigned long port_flags)
906 return ((port_flags & MV_FLAG_DUAL_HC) ? 2 : 1);
910 * mv_save_cached_regs - (re-)initialize cached port registers
911 * @ap: the port whose registers we are caching
913 * Initialize the local cache of port registers,
914 * so that reading them over and over again can
915 * be avoided on the hotter paths of this driver.
916 * This saves a few microseconds each time we switch
917 * to/from EDMA mode to perform (eg.) a drive cache flush.
919 static void mv_save_cached_regs(struct ata_port *ap)
921 void __iomem *port_mmio = mv_ap_base(ap);
922 struct mv_port_priv *pp = ap->private_data;
924 pp->cached.fiscfg = readl(port_mmio + FISCFG);
925 pp->cached.ltmode = readl(port_mmio + LTMODE);
926 pp->cached.haltcond = readl(port_mmio + EDMA_HALTCOND);
927 pp->cached.unknown_rsvd = readl(port_mmio + EDMA_UNKNOWN_RSVD);
931 * mv_write_cached_reg - write to a cached port register
932 * @addr: hardware address of the register
933 * @old: pointer to cached value of the register
934 * @new: new value for the register
936 * Write a new value to a cached register,
937 * but only if the value is different from before.
939 static inline void mv_write_cached_reg(void __iomem *addr, u32 *old, u32 new)
945 * Workaround for 88SX60x1-B2 FEr SATA#13:
946 * Read-after-write is needed to prevent generating 64-bit
947 * write cycles on the PCI bus for SATA interface registers
948 * at offsets ending in 0x4 or 0xc.
950 * Looks like a lot of fuss, but it avoids an unnecessary
951 * +1 usec read-after-write delay for unaffected registers.
953 laddr = (long)addr & 0xffff;
954 if (laddr >= 0x300 && laddr <= 0x33c) {
956 if (laddr == 0x4 || laddr == 0xc) {
957 writelfl(new, addr); /* read after write */
961 writel(new, addr); /* unaffected by the errata */
965 static void mv_set_edma_ptrs(void __iomem *port_mmio,
966 struct mv_host_priv *hpriv,
967 struct mv_port_priv *pp)
972 * initialize request queue
974 pp->req_idx &= MV_MAX_Q_DEPTH_MASK; /* paranoia */
975 index = pp->req_idx << EDMA_REQ_Q_PTR_SHIFT;
977 WARN_ON(pp->crqb_dma & 0x3ff);
978 writel((pp->crqb_dma >> 16) >> 16, port_mmio + EDMA_REQ_Q_BASE_HI);
979 writelfl((pp->crqb_dma & EDMA_REQ_Q_BASE_LO_MASK) | index,
980 port_mmio + EDMA_REQ_Q_IN_PTR);
981 writelfl(index, port_mmio + EDMA_REQ_Q_OUT_PTR);
984 * initialize response queue
986 pp->resp_idx &= MV_MAX_Q_DEPTH_MASK; /* paranoia */
987 index = pp->resp_idx << EDMA_RSP_Q_PTR_SHIFT;
989 WARN_ON(pp->crpb_dma & 0xff);
990 writel((pp->crpb_dma >> 16) >> 16, port_mmio + EDMA_RSP_Q_BASE_HI);
991 writelfl(index, port_mmio + EDMA_RSP_Q_IN_PTR);
992 writelfl((pp->crpb_dma & EDMA_RSP_Q_BASE_LO_MASK) | index,
993 port_mmio + EDMA_RSP_Q_OUT_PTR);
996 static void mv_write_main_irq_mask(u32 mask, struct mv_host_priv *hpriv)
999 * When writing to the main_irq_mask in hardware,
1000 * we must ensure exclusivity between the interrupt coalescing bits
1001 * and the corresponding individual port DONE_IRQ bits.
1003 * Note that this register is really an "IRQ enable" register,
1004 * not an "IRQ mask" register as Marvell's naming might suggest.
1006 if (mask & (ALL_PORTS_COAL_DONE | PORTS_0_3_COAL_DONE))
1007 mask &= ~DONE_IRQ_0_3;
1008 if (mask & (ALL_PORTS_COAL_DONE | PORTS_4_7_COAL_DONE))
1009 mask &= ~DONE_IRQ_4_7;
1010 writelfl(mask, hpriv->main_irq_mask_addr);
1013 static void mv_set_main_irq_mask(struct ata_host *host,
1014 u32 disable_bits, u32 enable_bits)
1016 struct mv_host_priv *hpriv = host->private_data;
1017 u32 old_mask, new_mask;
1019 old_mask = hpriv->main_irq_mask;
1020 new_mask = (old_mask & ~disable_bits) | enable_bits;
1021 if (new_mask != old_mask) {
1022 hpriv->main_irq_mask = new_mask;
1023 mv_write_main_irq_mask(new_mask, hpriv);
1027 static void mv_enable_port_irqs(struct ata_port *ap,
1028 unsigned int port_bits)
1030 unsigned int shift, hardport, port = ap->port_no;
1031 u32 disable_bits, enable_bits;
1033 MV_PORT_TO_SHIFT_AND_HARDPORT(port, shift, hardport);
1035 disable_bits = (DONE_IRQ | ERR_IRQ) << shift;
1036 enable_bits = port_bits << shift;
1037 mv_set_main_irq_mask(ap->host, disable_bits, enable_bits);
1040 static void mv_clear_and_enable_port_irqs(struct ata_port *ap,
1041 void __iomem *port_mmio,
1042 unsigned int port_irqs)
1044 struct mv_host_priv *hpriv = ap->host->private_data;
1045 int hardport = mv_hardport_from_port(ap->port_no);
1046 void __iomem *hc_mmio = mv_hc_base_from_port(
1047 mv_host_base(ap->host), ap->port_no);
1050 /* clear EDMA event indicators, if any */
1051 writelfl(0, port_mmio + EDMA_ERR_IRQ_CAUSE);
1053 /* clear pending irq events */
1054 hc_irq_cause = ~((DEV_IRQ | DMA_IRQ) << hardport);
1055 writelfl(hc_irq_cause, hc_mmio + HC_IRQ_CAUSE);
1057 /* clear FIS IRQ Cause */
1058 if (IS_GEN_IIE(hpriv))
1059 writelfl(0, port_mmio + FIS_IRQ_CAUSE);
1061 mv_enable_port_irqs(ap, port_irqs);
1064 static void mv_set_irq_coalescing(struct ata_host *host,
1065 unsigned int count, unsigned int usecs)
1067 struct mv_host_priv *hpriv = host->private_data;
1068 void __iomem *mmio = hpriv->base, *hc_mmio;
1069 u32 coal_enable = 0;
1070 unsigned long flags;
1071 unsigned int clks, is_dual_hc = hpriv->n_ports > MV_PORTS_PER_HC;
1072 const u32 coal_disable = PORTS_0_3_COAL_DONE | PORTS_4_7_COAL_DONE |
1073 ALL_PORTS_COAL_DONE;
1075 /* Disable IRQ coalescing if either threshold is zero */
1076 if (!usecs || !count) {
1079 /* Respect maximum limits of the hardware */
1080 clks = usecs * COAL_CLOCKS_PER_USEC;
1081 if (clks > MAX_COAL_TIME_THRESHOLD)
1082 clks = MAX_COAL_TIME_THRESHOLD;
1083 if (count > MAX_COAL_IO_COUNT)
1084 count = MAX_COAL_IO_COUNT;
1087 spin_lock_irqsave(&host->lock, flags);
1088 mv_set_main_irq_mask(host, coal_disable, 0);
1090 if (is_dual_hc && !IS_GEN_I(hpriv)) {
1092 * GEN_II/GEN_IIE with dual host controllers:
1093 * one set of global thresholds for the entire chip.
1095 writel(clks, mmio + IRQ_COAL_TIME_THRESHOLD);
1096 writel(count, mmio + IRQ_COAL_IO_THRESHOLD);
1097 /* clear leftover coal IRQ bit */
1098 writel(~ALL_PORTS_COAL_IRQ, mmio + IRQ_COAL_CAUSE);
1100 coal_enable = ALL_PORTS_COAL_DONE;
1101 clks = count = 0; /* force clearing of regular regs below */
1105 * All chips: independent thresholds for each HC on the chip.
1107 hc_mmio = mv_hc_base_from_port(mmio, 0);
1108 writel(clks, hc_mmio + HC_IRQ_COAL_TIME_THRESHOLD);
1109 writel(count, hc_mmio + HC_IRQ_COAL_IO_THRESHOLD);
1110 writel(~HC_COAL_IRQ, hc_mmio + HC_IRQ_CAUSE);
1112 coal_enable |= PORTS_0_3_COAL_DONE;
1114 hc_mmio = mv_hc_base_from_port(mmio, MV_PORTS_PER_HC);
1115 writel(clks, hc_mmio + HC_IRQ_COAL_TIME_THRESHOLD);
1116 writel(count, hc_mmio + HC_IRQ_COAL_IO_THRESHOLD);
1117 writel(~HC_COAL_IRQ, hc_mmio + HC_IRQ_CAUSE);
1119 coal_enable |= PORTS_4_7_COAL_DONE;
1122 mv_set_main_irq_mask(host, 0, coal_enable);
1123 spin_unlock_irqrestore(&host->lock, flags);
1127 * mv_start_edma - Enable eDMA engine
1128 * @base: port base address
1129 * @pp: port private data
1131 * Verify the local cache of the eDMA state is accurate with a
1135 * Inherited from caller.
1137 static void mv_start_edma(struct ata_port *ap, void __iomem *port_mmio,
1138 struct mv_port_priv *pp, u8 protocol)
1140 int want_ncq = (protocol == ATA_PROT_NCQ);
1142 if (pp->pp_flags & MV_PP_FLAG_EDMA_EN) {
1143 int using_ncq = ((pp->pp_flags & MV_PP_FLAG_NCQ_EN) != 0);
1144 if (want_ncq != using_ncq)
1147 if (!(pp->pp_flags & MV_PP_FLAG_EDMA_EN)) {
1148 struct mv_host_priv *hpriv = ap->host->private_data;
1150 mv_edma_cfg(ap, want_ncq, 1);
1152 mv_set_edma_ptrs(port_mmio, hpriv, pp);
1153 mv_clear_and_enable_port_irqs(ap, port_mmio, DONE_IRQ|ERR_IRQ);
1155 writelfl(EDMA_EN, port_mmio + EDMA_CMD);
1156 pp->pp_flags |= MV_PP_FLAG_EDMA_EN;
1160 static void mv_wait_for_edma_empty_idle(struct ata_port *ap)
1162 void __iomem *port_mmio = mv_ap_base(ap);
1163 const u32 empty_idle = (EDMA_STATUS_CACHE_EMPTY | EDMA_STATUS_IDLE);
1164 const int per_loop = 5, timeout = (15 * 1000 / per_loop);
1168 * Wait for the EDMA engine to finish transactions in progress.
1169 * No idea what a good "timeout" value might be, but measurements
1170 * indicate that it often requires hundreds of microseconds
1171 * with two drives in-use. So we use the 15msec value above
1172 * as a rough guess at what even more drives might require.
1174 for (i = 0; i < timeout; ++i) {
1175 u32 edma_stat = readl(port_mmio + EDMA_STATUS);
1176 if ((edma_stat & empty_idle) == empty_idle)
1180 /* ata_port_printk(ap, KERN_INFO, "%s: %u+ usecs\n", __func__, i); */
1184 * mv_stop_edma_engine - Disable eDMA engine
1185 * @port_mmio: io base address
1188 * Inherited from caller.
1190 static int mv_stop_edma_engine(void __iomem *port_mmio)
1194 /* Disable eDMA. The disable bit auto clears. */
1195 writelfl(EDMA_DS, port_mmio + EDMA_CMD);
1197 /* Wait for the chip to confirm eDMA is off. */
1198 for (i = 10000; i > 0; i--) {
1199 u32 reg = readl(port_mmio + EDMA_CMD);
1200 if (!(reg & EDMA_EN))
1207 static int mv_stop_edma(struct ata_port *ap)
1209 void __iomem *port_mmio = mv_ap_base(ap);
1210 struct mv_port_priv *pp = ap->private_data;
1213 if (!(pp->pp_flags & MV_PP_FLAG_EDMA_EN))
1215 pp->pp_flags &= ~MV_PP_FLAG_EDMA_EN;
1216 mv_wait_for_edma_empty_idle(ap);
1217 if (mv_stop_edma_engine(port_mmio)) {
1218 ata_port_printk(ap, KERN_ERR, "Unable to stop eDMA\n");
1221 mv_edma_cfg(ap, 0, 0);
1226 static void mv_dump_mem(void __iomem *start, unsigned bytes)
1229 for (b = 0; b < bytes; ) {
1230 DPRINTK("%p: ", start + b);
1231 for (w = 0; b < bytes && w < 4; w++) {
1232 printk("%08x ", readl(start + b));
1240 static void mv_dump_pci_cfg(struct pci_dev *pdev, unsigned bytes)
1245 for (b = 0; b < bytes; ) {
1246 DPRINTK("%02x: ", b);
1247 for (w = 0; b < bytes && w < 4; w++) {
1248 (void) pci_read_config_dword(pdev, b, &dw);
1249 printk("%08x ", dw);
1256 static void mv_dump_all_regs(void __iomem *mmio_base, int port,
1257 struct pci_dev *pdev)
1260 void __iomem *hc_base = mv_hc_base(mmio_base,
1261 port >> MV_PORT_HC_SHIFT);
1262 void __iomem *port_base;
1263 int start_port, num_ports, p, start_hc, num_hcs, hc;
1266 start_hc = start_port = 0;
1267 num_ports = 8; /* shld be benign for 4 port devs */
1270 start_hc = port >> MV_PORT_HC_SHIFT;
1272 num_ports = num_hcs = 1;
1274 DPRINTK("All registers for port(s) %u-%u:\n", start_port,
1275 num_ports > 1 ? num_ports - 1 : start_port);
1278 DPRINTK("PCI config space regs:\n");
1279 mv_dump_pci_cfg(pdev, 0x68);
1281 DPRINTK("PCI regs:\n");
1282 mv_dump_mem(mmio_base+0xc00, 0x3c);
1283 mv_dump_mem(mmio_base+0xd00, 0x34);
1284 mv_dump_mem(mmio_base+0xf00, 0x4);
1285 mv_dump_mem(mmio_base+0x1d00, 0x6c);
1286 for (hc = start_hc; hc < start_hc + num_hcs; hc++) {
1287 hc_base = mv_hc_base(mmio_base, hc);
1288 DPRINTK("HC regs (HC %i):\n", hc);
1289 mv_dump_mem(hc_base, 0x1c);
1291 for (p = start_port; p < start_port + num_ports; p++) {
1292 port_base = mv_port_base(mmio_base, p);
1293 DPRINTK("EDMA regs (port %i):\n", p);
1294 mv_dump_mem(port_base, 0x54);
1295 DPRINTK("SATA regs (port %i):\n", p);
1296 mv_dump_mem(port_base+0x300, 0x60);
1301 static unsigned int mv_scr_offset(unsigned int sc_reg_in)
1305 switch (sc_reg_in) {
1309 ofs = SATA_STATUS + (sc_reg_in * sizeof(u32));
1312 ofs = SATA_ACTIVE; /* active is not with the others */
1321 static int mv_scr_read(struct ata_link *link, unsigned int sc_reg_in, u32 *val)
1323 unsigned int ofs = mv_scr_offset(sc_reg_in);
1325 if (ofs != 0xffffffffU) {
1326 *val = readl(mv_ap_base(link->ap) + ofs);
1332 static int mv_scr_write(struct ata_link *link, unsigned int sc_reg_in, u32 val)
1334 unsigned int ofs = mv_scr_offset(sc_reg_in);
1336 if (ofs != 0xffffffffU) {
1337 void __iomem *addr = mv_ap_base(link->ap) + ofs;
1338 if (sc_reg_in == SCR_CONTROL) {
1340 * Workaround for 88SX60x1 FEr SATA#26:
1342 * COMRESETs have to take care not to accidently
1343 * put the drive to sleep when writing SCR_CONTROL.
1344 * Setting bits 12..15 prevents this problem.
1346 * So if we see an outbound COMMRESET, set those bits.
1347 * Ditto for the followup write that clears the reset.
1349 * The proprietary driver does this for
1350 * all chip versions, and so do we.
1352 if ((val & 0xf) == 1 || (readl(addr) & 0xf) == 1)
1355 writelfl(val, addr);
1361 static void mv6_dev_config(struct ata_device *adev)
1364 * Deal with Gen-II ("mv6") hardware quirks/restrictions:
1366 * Gen-II does not support NCQ over a port multiplier
1367 * (no FIS-based switching).
1369 if (adev->flags & ATA_DFLAG_NCQ) {
1370 if (sata_pmp_attached(adev->link->ap)) {
1371 adev->flags &= ~ATA_DFLAG_NCQ;
1372 ata_dev_printk(adev, KERN_INFO,
1373 "NCQ disabled for command-based switching\n");
1378 static int mv_qc_defer(struct ata_queued_cmd *qc)
1380 struct ata_link *link = qc->dev->link;
1381 struct ata_port *ap = link->ap;
1382 struct mv_port_priv *pp = ap->private_data;
1385 * Don't allow new commands if we're in a delayed EH state
1386 * for NCQ and/or FIS-based switching.
1388 if (pp->pp_flags & MV_PP_FLAG_DELAYED_EH)
1389 return ATA_DEFER_PORT;
1391 /* PIO commands need exclusive link: no other commands [DMA or PIO]
1392 * can run concurrently.
1393 * set excl_link when we want to send a PIO command in DMA mode
1394 * or a non-NCQ command in NCQ mode.
1395 * When we receive a command from that link, and there are no
1396 * outstanding commands, mark a flag to clear excl_link and let
1397 * the command go through.
1399 if (unlikely(ap->excl_link)) {
1400 if (link == ap->excl_link) {
1401 if (ap->nr_active_links)
1402 return ATA_DEFER_PORT;
1403 qc->flags |= ATA_QCFLAG_CLEAR_EXCL;
1406 return ATA_DEFER_PORT;
1410 * If the port is completely idle, then allow the new qc.
1412 if (ap->nr_active_links == 0)
1416 * The port is operating in host queuing mode (EDMA) with NCQ
1417 * enabled, allow multiple NCQ commands. EDMA also allows
1418 * queueing multiple DMA commands but libata core currently
1421 if ((pp->pp_flags & MV_PP_FLAG_EDMA_EN) &&
1422 (pp->pp_flags & MV_PP_FLAG_NCQ_EN)) {
1423 if (ata_is_ncq(qc->tf.protocol))
1426 ap->excl_link = link;
1427 return ATA_DEFER_PORT;
1431 return ATA_DEFER_PORT;
1434 static void mv_config_fbs(struct ata_port *ap, int want_ncq, int want_fbs)
1436 struct mv_port_priv *pp = ap->private_data;
1437 void __iomem *port_mmio;
1439 u32 fiscfg, *old_fiscfg = &pp->cached.fiscfg;
1440 u32 ltmode, *old_ltmode = &pp->cached.ltmode;
1441 u32 haltcond, *old_haltcond = &pp->cached.haltcond;
1443 ltmode = *old_ltmode & ~LTMODE_BIT8;
1444 haltcond = *old_haltcond | EDMA_ERR_DEV;
1447 fiscfg = *old_fiscfg | FISCFG_SINGLE_SYNC;
1448 ltmode = *old_ltmode | LTMODE_BIT8;
1450 haltcond &= ~EDMA_ERR_DEV;
1452 fiscfg |= FISCFG_WAIT_DEV_ERR;
1454 fiscfg = *old_fiscfg & ~(FISCFG_SINGLE_SYNC | FISCFG_WAIT_DEV_ERR);
1457 port_mmio = mv_ap_base(ap);
1458 mv_write_cached_reg(port_mmio + FISCFG, old_fiscfg, fiscfg);
1459 mv_write_cached_reg(port_mmio + LTMODE, old_ltmode, ltmode);
1460 mv_write_cached_reg(port_mmio + EDMA_HALTCOND, old_haltcond, haltcond);
1463 static void mv_60x1_errata_sata25(struct ata_port *ap, int want_ncq)
1465 struct mv_host_priv *hpriv = ap->host->private_data;
1468 /* workaround for 88SX60x1 FEr SATA#25 (part 1) */
1469 old = readl(hpriv->base + GPIO_PORT_CTL);
1471 new = old | (1 << 22);
1473 new = old & ~(1 << 22);
1475 writel(new, hpriv->base + GPIO_PORT_CTL);
1479 * mv_bmdma_enable - set a magic bit on GEN_IIE to allow bmdma
1480 * @ap: Port being initialized
1482 * There are two DMA modes on these chips: basic DMA, and EDMA.
1484 * Bit-0 of the "EDMA RESERVED" register enables/disables use
1485 * of basic DMA on the GEN_IIE versions of the chips.
1487 * This bit survives EDMA resets, and must be set for basic DMA
1488 * to function, and should be cleared when EDMA is active.
1490 static void mv_bmdma_enable_iie(struct ata_port *ap, int enable_bmdma)
1492 struct mv_port_priv *pp = ap->private_data;
1493 u32 new, *old = &pp->cached.unknown_rsvd;
1499 mv_write_cached_reg(mv_ap_base(ap) + EDMA_UNKNOWN_RSVD, old, new);
1503 * SOC chips have an issue whereby the HDD LEDs don't always blink
1504 * during I/O when NCQ is enabled. Enabling a special "LED blink" mode
1505 * of the SOC takes care of it, generating a steady blink rate when
1506 * any drive on the chip is active.
1508 * Unfortunately, the blink mode is a global hardware setting for the SOC,
1509 * so we must use it whenever at least one port on the SOC has NCQ enabled.
1511 * We turn "LED blink" off when NCQ is not in use anywhere, because the normal
1512 * LED operation works then, and provides better (more accurate) feedback.
1514 * Note that this code assumes that an SOC never has more than one HC onboard.
1516 static void mv_soc_led_blink_enable(struct ata_port *ap)
1518 struct ata_host *host = ap->host;
1519 struct mv_host_priv *hpriv = host->private_data;
1520 void __iomem *hc_mmio;
1523 if (hpriv->hp_flags & MV_HP_QUIRK_LED_BLINK_EN)
1525 hpriv->hp_flags |= MV_HP_QUIRK_LED_BLINK_EN;
1526 hc_mmio = mv_hc_base_from_port(mv_host_base(host), ap->port_no);
1527 led_ctrl = readl(hc_mmio + SOC_LED_CTRL);
1528 writel(led_ctrl | SOC_LED_CTRL_BLINK, hc_mmio + SOC_LED_CTRL);
1531 static void mv_soc_led_blink_disable(struct ata_port *ap)
1533 struct ata_host *host = ap->host;
1534 struct mv_host_priv *hpriv = host->private_data;
1535 void __iomem *hc_mmio;
1539 if (!(hpriv->hp_flags & MV_HP_QUIRK_LED_BLINK_EN))
1542 /* disable led-blink only if no ports are using NCQ */
1543 for (port = 0; port < hpriv->n_ports; port++) {
1544 struct ata_port *this_ap = host->ports[port];
1545 struct mv_port_priv *pp = this_ap->private_data;
1547 if (pp->pp_flags & MV_PP_FLAG_NCQ_EN)
1551 hpriv->hp_flags &= ~MV_HP_QUIRK_LED_BLINK_EN;
1552 hc_mmio = mv_hc_base_from_port(mv_host_base(host), ap->port_no);
1553 led_ctrl = readl(hc_mmio + SOC_LED_CTRL);
1554 writel(led_ctrl & ~SOC_LED_CTRL_BLINK, hc_mmio + SOC_LED_CTRL);
1557 static void mv_edma_cfg(struct ata_port *ap, int want_ncq, int want_edma)
1560 struct mv_port_priv *pp = ap->private_data;
1561 struct mv_host_priv *hpriv = ap->host->private_data;
1562 void __iomem *port_mmio = mv_ap_base(ap);
1564 /* set up non-NCQ EDMA configuration */
1565 cfg = EDMA_CFG_Q_DEPTH; /* always 0x1f for *all* chips */
1567 ~(MV_PP_FLAG_FBS_EN | MV_PP_FLAG_NCQ_EN | MV_PP_FLAG_FAKE_ATA_BUSY);
1569 if (IS_GEN_I(hpriv))
1570 cfg |= (1 << 8); /* enab config burst size mask */
1572 else if (IS_GEN_II(hpriv)) {
1573 cfg |= EDMA_CFG_RD_BRST_EXT | EDMA_CFG_WR_BUFF_LEN;
1574 mv_60x1_errata_sata25(ap, want_ncq);
1576 } else if (IS_GEN_IIE(hpriv)) {
1577 int want_fbs = sata_pmp_attached(ap);
1579 * Possible future enhancement:
1581 * The chip can use FBS with non-NCQ, if we allow it,
1582 * But first we need to have the error handling in place
1583 * for this mode (datasheet section 7.3.15.4.2.3).
1584 * So disallow non-NCQ FBS for now.
1586 want_fbs &= want_ncq;
1588 mv_config_fbs(ap, want_ncq, want_fbs);
1591 pp->pp_flags |= MV_PP_FLAG_FBS_EN;
1592 cfg |= EDMA_CFG_EDMA_FBS; /* FIS-based switching */
1595 cfg |= (1 << 23); /* do not mask PM field in rx'd FIS */
1597 cfg |= (1 << 22); /* enab 4-entry host queue cache */
1599 cfg |= (1 << 18); /* enab early completion */
1601 if (hpriv->hp_flags & MV_HP_CUT_THROUGH)
1602 cfg |= (1 << 17); /* enab cut-thru (dis stor&forwrd) */
1603 mv_bmdma_enable_iie(ap, !want_edma);
1605 if (IS_SOC(hpriv)) {
1607 mv_soc_led_blink_enable(ap);
1609 mv_soc_led_blink_disable(ap);
1614 cfg |= EDMA_CFG_NCQ;
1615 pp->pp_flags |= MV_PP_FLAG_NCQ_EN;
1618 writelfl(cfg, port_mmio + EDMA_CFG);
1621 static void mv_port_free_dma_mem(struct ata_port *ap)
1623 struct mv_host_priv *hpriv = ap->host->private_data;
1624 struct mv_port_priv *pp = ap->private_data;
1628 dma_pool_free(hpriv->crqb_pool, pp->crqb, pp->crqb_dma);
1632 dma_pool_free(hpriv->crpb_pool, pp->crpb, pp->crpb_dma);
1636 * For GEN_I, there's no NCQ, so we have only a single sg_tbl.
1637 * For later hardware, we have one unique sg_tbl per NCQ tag.
1639 for (tag = 0; tag < MV_MAX_Q_DEPTH; ++tag) {
1640 if (pp->sg_tbl[tag]) {
1641 if (tag == 0 || !IS_GEN_I(hpriv))
1642 dma_pool_free(hpriv->sg_tbl_pool,
1644 pp->sg_tbl_dma[tag]);
1645 pp->sg_tbl[tag] = NULL;
1651 * mv_port_start - Port specific init/start routine.
1652 * @ap: ATA channel to manipulate
1654 * Allocate and point to DMA memory, init port private memory,
1658 * Inherited from caller.
1660 static int mv_port_start(struct ata_port *ap)
1662 struct device *dev = ap->host->dev;
1663 struct mv_host_priv *hpriv = ap->host->private_data;
1664 struct mv_port_priv *pp;
1665 unsigned long flags;
1668 pp = devm_kzalloc(dev, sizeof(*pp), GFP_KERNEL);
1671 ap->private_data = pp;
1673 pp->crqb = dma_pool_alloc(hpriv->crqb_pool, GFP_KERNEL, &pp->crqb_dma);
1676 memset(pp->crqb, 0, MV_CRQB_Q_SZ);
1678 pp->crpb = dma_pool_alloc(hpriv->crpb_pool, GFP_KERNEL, &pp->crpb_dma);
1680 goto out_port_free_dma_mem;
1681 memset(pp->crpb, 0, MV_CRPB_Q_SZ);
1683 /* 6041/6081 Rev. "C0" (and newer) are okay with async notify */
1684 if (hpriv->hp_flags & MV_HP_ERRATA_60X1C0)
1685 ap->flags |= ATA_FLAG_AN;
1687 * For GEN_I, there's no NCQ, so we only allocate a single sg_tbl.
1688 * For later hardware, we need one unique sg_tbl per NCQ tag.
1690 for (tag = 0; tag < MV_MAX_Q_DEPTH; ++tag) {
1691 if (tag == 0 || !IS_GEN_I(hpriv)) {
1692 pp->sg_tbl[tag] = dma_pool_alloc(hpriv->sg_tbl_pool,
1693 GFP_KERNEL, &pp->sg_tbl_dma[tag]);
1694 if (!pp->sg_tbl[tag])
1695 goto out_port_free_dma_mem;
1697 pp->sg_tbl[tag] = pp->sg_tbl[0];
1698 pp->sg_tbl_dma[tag] = pp->sg_tbl_dma[0];
1702 spin_lock_irqsave(ap->lock, flags);
1703 mv_save_cached_regs(ap);
1704 mv_edma_cfg(ap, 0, 0);
1705 spin_unlock_irqrestore(ap->lock, flags);
1709 out_port_free_dma_mem:
1710 mv_port_free_dma_mem(ap);
1715 * mv_port_stop - Port specific cleanup/stop routine.
1716 * @ap: ATA channel to manipulate
1718 * Stop DMA, cleanup port memory.
1721 * This routine uses the host lock to protect the DMA stop.
1723 static void mv_port_stop(struct ata_port *ap)
1725 unsigned long flags;
1727 spin_lock_irqsave(ap->lock, flags);
1729 mv_enable_port_irqs(ap, 0);
1730 spin_unlock_irqrestore(ap->lock, flags);
1731 mv_port_free_dma_mem(ap);
1735 * mv_fill_sg - Fill out the Marvell ePRD (scatter gather) entries
1736 * @qc: queued command whose SG list to source from
1738 * Populate the SG list and mark the last entry.
1741 * Inherited from caller.
1743 static void mv_fill_sg(struct ata_queued_cmd *qc)
1745 struct mv_port_priv *pp = qc->ap->private_data;
1746 struct scatterlist *sg;
1747 struct mv_sg *mv_sg, *last_sg = NULL;
1750 mv_sg = pp->sg_tbl[qc->tag];
1751 for_each_sg(qc->sg, sg, qc->n_elem, si) {
1752 dma_addr_t addr = sg_dma_address(sg);
1753 u32 sg_len = sg_dma_len(sg);
1756 u32 offset = addr & 0xffff;
1759 if (offset + len > 0x10000)
1760 len = 0x10000 - offset;
1762 mv_sg->addr = cpu_to_le32(addr & 0xffffffff);
1763 mv_sg->addr_hi = cpu_to_le32((addr >> 16) >> 16);
1764 mv_sg->flags_size = cpu_to_le32(len & 0xffff);
1765 mv_sg->reserved = 0;
1775 if (likely(last_sg))
1776 last_sg->flags_size |= cpu_to_le32(EPRD_FLAG_END_OF_TBL);
1777 mb(); /* ensure data structure is visible to the chipset */
1780 static void mv_crqb_pack_cmd(__le16 *cmdw, u8 data, u8 addr, unsigned last)
1782 u16 tmp = data | (addr << CRQB_CMD_ADDR_SHIFT) | CRQB_CMD_CS |
1783 (last ? CRQB_CMD_LAST : 0);
1784 *cmdw = cpu_to_le16(tmp);
1788 * mv_sff_irq_clear - Clear hardware interrupt after DMA.
1789 * @ap: Port associated with this ATA transaction.
1791 * We need this only for ATAPI bmdma transactions,
1792 * as otherwise we experience spurious interrupts
1793 * after libata-sff handles the bmdma interrupts.
1795 static void mv_sff_irq_clear(struct ata_port *ap)
1797 mv_clear_and_enable_port_irqs(ap, mv_ap_base(ap), ERR_IRQ);
1801 * mv_check_atapi_dma - Filter ATAPI cmds which are unsuitable for DMA.
1802 * @qc: queued command to check for chipset/DMA compatibility.
1804 * The bmdma engines cannot handle speculative data sizes
1805 * (bytecount under/over flow). So only allow DMA for
1806 * data transfer commands with known data sizes.
1809 * Inherited from caller.
1811 static int mv_check_atapi_dma(struct ata_queued_cmd *qc)
1813 struct scsi_cmnd *scmd = qc->scsicmd;
1816 switch (scmd->cmnd[0]) {
1824 case GPCMD_SEND_DVD_STRUCTURE:
1825 case GPCMD_SEND_CUE_SHEET:
1826 return 0; /* DMA is safe */
1829 return -EOPNOTSUPP; /* use PIO instead */
1833 * mv_bmdma_setup - Set up BMDMA transaction
1834 * @qc: queued command to prepare DMA for.
1837 * Inherited from caller.
1839 static void mv_bmdma_setup(struct ata_queued_cmd *qc)
1841 struct ata_port *ap = qc->ap;
1842 void __iomem *port_mmio = mv_ap_base(ap);
1843 struct mv_port_priv *pp = ap->private_data;
1847 /* clear all DMA cmd bits */
1848 writel(0, port_mmio + BMDMA_CMD);
1850 /* load PRD table addr. */
1851 writel((pp->sg_tbl_dma[qc->tag] >> 16) >> 16,
1852 port_mmio + BMDMA_PRD_HIGH);
1853 writelfl(pp->sg_tbl_dma[qc->tag],
1854 port_mmio + BMDMA_PRD_LOW);
1856 /* issue r/w command */
1857 ap->ops->sff_exec_command(ap, &qc->tf);
1861 * mv_bmdma_start - Start a BMDMA transaction
1862 * @qc: queued command to start DMA on.
1865 * Inherited from caller.
1867 static void mv_bmdma_start(struct ata_queued_cmd *qc)
1869 struct ata_port *ap = qc->ap;
1870 void __iomem *port_mmio = mv_ap_base(ap);
1871 unsigned int rw = (qc->tf.flags & ATA_TFLAG_WRITE);
1872 u32 cmd = (rw ? 0 : ATA_DMA_WR) | ATA_DMA_START;
1874 /* start host DMA transaction */
1875 writelfl(cmd, port_mmio + BMDMA_CMD);
1879 * mv_bmdma_stop - Stop BMDMA transfer
1880 * @qc: queued command to stop DMA on.
1882 * Clears the ATA_DMA_START flag in the bmdma control register
1885 * Inherited from caller.
1887 static void mv_bmdma_stop(struct ata_queued_cmd *qc)
1889 struct ata_port *ap = qc->ap;
1890 void __iomem *port_mmio = mv_ap_base(ap);
1893 /* clear start/stop bit */
1894 cmd = readl(port_mmio + BMDMA_CMD);
1895 cmd &= ~ATA_DMA_START;
1896 writelfl(cmd, port_mmio + BMDMA_CMD);
1898 /* one-PIO-cycle guaranteed wait, per spec, for HDMA1:0 transition */
1899 ata_sff_dma_pause(ap);
1903 * mv_bmdma_status - Read BMDMA status
1904 * @ap: port for which to retrieve DMA status.
1906 * Read and return equivalent of the sff BMDMA status register.
1909 * Inherited from caller.
1911 static u8 mv_bmdma_status(struct ata_port *ap)
1913 void __iomem *port_mmio = mv_ap_base(ap);
1917 * Other bits are valid only if ATA_DMA_ACTIVE==0,
1918 * and the ATA_DMA_INTR bit doesn't exist.
1920 reg = readl(port_mmio + BMDMA_STATUS);
1921 if (reg & ATA_DMA_ACTIVE)
1922 status = ATA_DMA_ACTIVE;
1924 status = (reg & ATA_DMA_ERR) | ATA_DMA_INTR;
1928 static void mv_rw_multi_errata_sata24(struct ata_queued_cmd *qc)
1930 struct ata_taskfile *tf = &qc->tf;
1932 * Workaround for 88SX60x1 FEr SATA#24.
1934 * Chip may corrupt WRITEs if multi_count >= 4kB.
1935 * Note that READs are unaffected.
1937 * It's not clear if this errata really means "4K bytes",
1938 * or if it always happens for multi_count > 7
1939 * regardless of device sector_size.
1941 * So, for safety, any write with multi_count > 7
1942 * gets converted here into a regular PIO write instead:
1944 if ((tf->flags & ATA_TFLAG_WRITE) && is_multi_taskfile(tf)) {
1945 if (qc->dev->multi_count > 7) {
1946 switch (tf->command) {
1947 case ATA_CMD_WRITE_MULTI:
1948 tf->command = ATA_CMD_PIO_WRITE;
1950 case ATA_CMD_WRITE_MULTI_FUA_EXT:
1951 tf->flags &= ~ATA_TFLAG_FUA; /* ugh */
1953 case ATA_CMD_WRITE_MULTI_EXT:
1954 tf->command = ATA_CMD_PIO_WRITE_EXT;
1962 * mv_qc_prep - Host specific command preparation.
1963 * @qc: queued command to prepare
1965 * This routine simply redirects to the general purpose routine
1966 * if command is not DMA. Else, it handles prep of the CRQB
1967 * (command request block), does some sanity checking, and calls
1968 * the SG load routine.
1971 * Inherited from caller.
1973 static void mv_qc_prep(struct ata_queued_cmd *qc)
1975 struct ata_port *ap = qc->ap;
1976 struct mv_port_priv *pp = ap->private_data;
1978 struct ata_taskfile *tf = &qc->tf;
1982 switch (tf->protocol) {
1985 break; /* continue below */
1987 mv_rw_multi_errata_sata24(qc);
1993 /* Fill in command request block
1995 if (!(tf->flags & ATA_TFLAG_WRITE))
1996 flags |= CRQB_FLAG_READ;
1997 WARN_ON(MV_MAX_Q_DEPTH <= qc->tag);
1998 flags |= qc->tag << CRQB_TAG_SHIFT;
1999 flags |= (qc->dev->link->pmp & 0xf) << CRQB_PMP_SHIFT;
2001 /* get current queue index from software */
2002 in_index = pp->req_idx;
2004 pp->crqb[in_index].sg_addr =
2005 cpu_to_le32(pp->sg_tbl_dma[qc->tag] & 0xffffffff);
2006 pp->crqb[in_index].sg_addr_hi =
2007 cpu_to_le32((pp->sg_tbl_dma[qc->tag] >> 16) >> 16);
2008 pp->crqb[in_index].ctrl_flags = cpu_to_le16(flags);
2010 cw = &pp->crqb[in_index].ata_cmd[0];
2012 /* Sadly, the CRQB cannot accomodate all registers--there are
2013 * only 11 bytes...so we must pick and choose required
2014 * registers based on the command. So, we drop feature and
2015 * hob_feature for [RW] DMA commands, but they are needed for
2016 * NCQ. NCQ will drop hob_nsect, which is not needed there
2017 * (nsect is used only for the tag; feat/hob_feat hold true nsect).
2019 switch (tf->command) {
2021 case ATA_CMD_READ_EXT:
2023 case ATA_CMD_WRITE_EXT:
2024 case ATA_CMD_WRITE_FUA_EXT:
2025 mv_crqb_pack_cmd(cw++, tf->hob_nsect, ATA_REG_NSECT, 0);
2027 case ATA_CMD_FPDMA_READ:
2028 case ATA_CMD_FPDMA_WRITE:
2029 mv_crqb_pack_cmd(cw++, tf->hob_feature, ATA_REG_FEATURE, 0);
2030 mv_crqb_pack_cmd(cw++, tf->feature, ATA_REG_FEATURE, 0);
2033 /* The only other commands EDMA supports in non-queued and
2034 * non-NCQ mode are: [RW] STREAM DMA and W DMA FUA EXT, none
2035 * of which are defined/used by Linux. If we get here, this
2036 * driver needs work.
2038 * FIXME: modify libata to give qc_prep a return value and
2039 * return error here.
2041 BUG_ON(tf->command);
2044 mv_crqb_pack_cmd(cw++, tf->nsect, ATA_REG_NSECT, 0);
2045 mv_crqb_pack_cmd(cw++, tf->hob_lbal, ATA_REG_LBAL, 0);
2046 mv_crqb_pack_cmd(cw++, tf->lbal, ATA_REG_LBAL, 0);
2047 mv_crqb_pack_cmd(cw++, tf->hob_lbam, ATA_REG_LBAM, 0);
2048 mv_crqb_pack_cmd(cw++, tf->lbam, ATA_REG_LBAM, 0);
2049 mv_crqb_pack_cmd(cw++, tf->hob_lbah, ATA_REG_LBAH, 0);
2050 mv_crqb_pack_cmd(cw++, tf->lbah, ATA_REG_LBAH, 0);
2051 mv_crqb_pack_cmd(cw++, tf->device, ATA_REG_DEVICE, 0);
2052 mv_crqb_pack_cmd(cw++, tf->command, ATA_REG_CMD, 1); /* last */
2054 if (!(qc->flags & ATA_QCFLAG_DMAMAP))
2060 * mv_qc_prep_iie - Host specific command preparation.
2061 * @qc: queued command to prepare
2063 * This routine simply redirects to the general purpose routine
2064 * if command is not DMA. Else, it handles prep of the CRQB
2065 * (command request block), does some sanity checking, and calls
2066 * the SG load routine.
2069 * Inherited from caller.
2071 static void mv_qc_prep_iie(struct ata_queued_cmd *qc)
2073 struct ata_port *ap = qc->ap;
2074 struct mv_port_priv *pp = ap->private_data;
2075 struct mv_crqb_iie *crqb;
2076 struct ata_taskfile *tf = &qc->tf;
2080 if ((tf->protocol != ATA_PROT_DMA) &&
2081 (tf->protocol != ATA_PROT_NCQ))
2084 /* Fill in Gen IIE command request block */
2085 if (!(tf->flags & ATA_TFLAG_WRITE))
2086 flags |= CRQB_FLAG_READ;
2088 WARN_ON(MV_MAX_Q_DEPTH <= qc->tag);
2089 flags |= qc->tag << CRQB_TAG_SHIFT;
2090 flags |= qc->tag << CRQB_HOSTQ_SHIFT;
2091 flags |= (qc->dev->link->pmp & 0xf) << CRQB_PMP_SHIFT;
2093 /* get current queue index from software */
2094 in_index = pp->req_idx;
2096 crqb = (struct mv_crqb_iie *) &pp->crqb[in_index];
2097 crqb->addr = cpu_to_le32(pp->sg_tbl_dma[qc->tag] & 0xffffffff);
2098 crqb->addr_hi = cpu_to_le32((pp->sg_tbl_dma[qc->tag] >> 16) >> 16);
2099 crqb->flags = cpu_to_le32(flags);
2101 crqb->ata_cmd[0] = cpu_to_le32(
2102 (tf->command << 16) |
2105 crqb->ata_cmd[1] = cpu_to_le32(
2111 crqb->ata_cmd[2] = cpu_to_le32(
2112 (tf->hob_lbal << 0) |
2113 (tf->hob_lbam << 8) |
2114 (tf->hob_lbah << 16) |
2115 (tf->hob_feature << 24)
2117 crqb->ata_cmd[3] = cpu_to_le32(
2119 (tf->hob_nsect << 8)
2122 if (!(qc->flags & ATA_QCFLAG_DMAMAP))
2128 * mv_sff_check_status - fetch device status, if valid
2129 * @ap: ATA port to fetch status from
2131 * When using command issue via mv_qc_issue_fis(),
2132 * the initial ATA_BUSY state does not show up in the
2133 * ATA status (shadow) register. This can confuse libata!
2135 * So we have a hook here to fake ATA_BUSY for that situation,
2136 * until the first time a BUSY, DRQ, or ERR bit is seen.
2138 * The rest of the time, it simply returns the ATA status register.
2140 static u8 mv_sff_check_status(struct ata_port *ap)
2142 u8 stat = ioread8(ap->ioaddr.status_addr);
2143 struct mv_port_priv *pp = ap->private_data;
2145 if (pp->pp_flags & MV_PP_FLAG_FAKE_ATA_BUSY) {
2146 if (stat & (ATA_BUSY | ATA_DRQ | ATA_ERR))
2147 pp->pp_flags &= ~MV_PP_FLAG_FAKE_ATA_BUSY;
2155 * mv_send_fis - Send a FIS, using the "Vendor-Unique FIS" register
2156 * @fis: fis to be sent
2157 * @nwords: number of 32-bit words in the fis
2159 static unsigned int mv_send_fis(struct ata_port *ap, u32 *fis, int nwords)
2161 void __iomem *port_mmio = mv_ap_base(ap);
2162 u32 ifctl, old_ifctl, ifstat;
2163 int i, timeout = 200, final_word = nwords - 1;
2165 /* Initiate FIS transmission mode */
2166 old_ifctl = readl(port_mmio + SATA_IFCTL);
2167 ifctl = 0x100 | (old_ifctl & 0xf);
2168 writelfl(ifctl, port_mmio + SATA_IFCTL);
2170 /* Send all words of the FIS except for the final word */
2171 for (i = 0; i < final_word; ++i)
2172 writel(fis[i], port_mmio + VENDOR_UNIQUE_FIS);
2174 /* Flag end-of-transmission, and then send the final word */
2175 writelfl(ifctl | 0x200, port_mmio + SATA_IFCTL);
2176 writelfl(fis[final_word], port_mmio + VENDOR_UNIQUE_FIS);
2179 * Wait for FIS transmission to complete.
2180 * This typically takes just a single iteration.
2183 ifstat = readl(port_mmio + SATA_IFSTAT);
2184 } while (!(ifstat & 0x1000) && --timeout);
2186 /* Restore original port configuration */
2187 writelfl(old_ifctl, port_mmio + SATA_IFCTL);
2189 /* See if it worked */
2190 if ((ifstat & 0x3000) != 0x1000) {
2191 ata_port_printk(ap, KERN_WARNING,
2192 "%s transmission error, ifstat=%08x\n",
2194 return AC_ERR_OTHER;
2200 * mv_qc_issue_fis - Issue a command directly as a FIS
2201 * @qc: queued command to start
2203 * Note that the ATA shadow registers are not updated
2204 * after command issue, so the device will appear "READY"
2205 * if polled, even while it is BUSY processing the command.
2207 * So we use a status hook to fake ATA_BUSY until the drive changes state.
2209 * Note: we don't get updated shadow regs on *completion*
2210 * of non-data commands. So avoid sending them via this function,
2211 * as they will appear to have completed immediately.
2213 * GEN_IIE has special registers that we could get the result tf from,
2214 * but earlier chipsets do not. For now, we ignore those registers.
2216 static unsigned int mv_qc_issue_fis(struct ata_queued_cmd *qc)
2218 struct ata_port *ap = qc->ap;
2219 struct mv_port_priv *pp = ap->private_data;
2220 struct ata_link *link = qc->dev->link;
2224 ata_tf_to_fis(&qc->tf, link->pmp, 1, (void *)fis);
2225 err = mv_send_fis(ap, fis, ARRAY_SIZE(fis));
2229 switch (qc->tf.protocol) {
2230 case ATAPI_PROT_PIO:
2231 pp->pp_flags |= MV_PP_FLAG_FAKE_ATA_BUSY;
2233 case ATAPI_PROT_NODATA:
2234 ap->hsm_task_state = HSM_ST_FIRST;
2237 pp->pp_flags |= MV_PP_FLAG_FAKE_ATA_BUSY;
2238 if (qc->tf.flags & ATA_TFLAG_WRITE)
2239 ap->hsm_task_state = HSM_ST_FIRST;
2241 ap->hsm_task_state = HSM_ST;
2244 ap->hsm_task_state = HSM_ST_LAST;
2248 if (qc->tf.flags & ATA_TFLAG_POLLING)
2249 ata_pio_queue_task(ap, qc, 0);
2254 * mv_qc_issue - Initiate a command to the host
2255 * @qc: queued command to start
2257 * This routine simply redirects to the general purpose routine
2258 * if command is not DMA. Else, it sanity checks our local
2259 * caches of the request producer/consumer indices then enables
2260 * DMA and bumps the request producer index.
2263 * Inherited from caller.
2265 static unsigned int mv_qc_issue(struct ata_queued_cmd *qc)
2267 static int limit_warnings = 10;
2268 struct ata_port *ap = qc->ap;
2269 void __iomem *port_mmio = mv_ap_base(ap);
2270 struct mv_port_priv *pp = ap->private_data;
2272 unsigned int port_irqs;
2274 pp->pp_flags &= ~MV_PP_FLAG_FAKE_ATA_BUSY; /* paranoia */
2276 switch (qc->tf.protocol) {
2279 mv_start_edma(ap, port_mmio, pp, qc->tf.protocol);
2280 pp->req_idx = (pp->req_idx + 1) & MV_MAX_Q_DEPTH_MASK;
2281 in_index = pp->req_idx << EDMA_REQ_Q_PTR_SHIFT;
2283 /* Write the request in pointer to kick the EDMA to life */
2284 writelfl((pp->crqb_dma & EDMA_REQ_Q_BASE_LO_MASK) | in_index,
2285 port_mmio + EDMA_REQ_Q_IN_PTR);
2290 * Errata SATA#16, SATA#24: warn if multiple DRQs expected.
2292 * Someday, we might implement special polling workarounds
2293 * for these, but it all seems rather unnecessary since we
2294 * normally use only DMA for commands which transfer more
2295 * than a single block of data.
2297 * Much of the time, this could just work regardless.
2298 * So for now, just log the incident, and allow the attempt.
2300 if (limit_warnings > 0 && (qc->nbytes / qc->sect_size) > 1) {
2302 ata_link_printk(qc->dev->link, KERN_WARNING, DRV_NAME
2303 ": attempting PIO w/multiple DRQ: "
2304 "this may fail due to h/w errata\n");
2307 case ATA_PROT_NODATA:
2308 case ATAPI_PROT_PIO:
2309 case ATAPI_PROT_NODATA:
2310 if (ap->flags & ATA_FLAG_PIO_POLLING)
2311 qc->tf.flags |= ATA_TFLAG_POLLING;
2315 if (qc->tf.flags & ATA_TFLAG_POLLING)
2316 port_irqs = ERR_IRQ; /* mask device interrupt when polling */
2318 port_irqs = ERR_IRQ | DONE_IRQ; /* unmask all interrupts */
2321 * We're about to send a non-EDMA capable command to the
2322 * port. Turn off EDMA so there won't be problems accessing
2323 * shadow block, etc registers.
2326 mv_clear_and_enable_port_irqs(ap, mv_ap_base(ap), port_irqs);
2327 mv_pmp_select(ap, qc->dev->link->pmp);
2329 if (qc->tf.command == ATA_CMD_READ_LOG_EXT) {
2330 struct mv_host_priv *hpriv = ap->host->private_data;
2332 * Workaround for 88SX60x1 FEr SATA#25 (part 2).
2334 * After any NCQ error, the READ_LOG_EXT command
2335 * from libata-eh *must* use mv_qc_issue_fis().
2336 * Otherwise it might fail, due to chip errata.
2338 * Rather than special-case it, we'll just *always*
2339 * use this method here for READ_LOG_EXT, making for
2342 if (IS_GEN_II(hpriv))
2343 return mv_qc_issue_fis(qc);
2345 return ata_sff_qc_issue(qc);
2348 static struct ata_queued_cmd *mv_get_active_qc(struct ata_port *ap)
2350 struct mv_port_priv *pp = ap->private_data;
2351 struct ata_queued_cmd *qc;
2353 if (pp->pp_flags & MV_PP_FLAG_NCQ_EN)
2355 qc = ata_qc_from_tag(ap, ap->link.active_tag);
2357 if (qc->tf.flags & ATA_TFLAG_POLLING)
2359 else if (!(qc->flags & ATA_QCFLAG_ACTIVE))
2365 static void mv_pmp_error_handler(struct ata_port *ap)
2367 unsigned int pmp, pmp_map;
2368 struct mv_port_priv *pp = ap->private_data;
2370 if (pp->pp_flags & MV_PP_FLAG_DELAYED_EH) {
2372 * Perform NCQ error analysis on failed PMPs
2373 * before we freeze the port entirely.
2375 * The failed PMPs are marked earlier by mv_pmp_eh_prep().
2377 pmp_map = pp->delayed_eh_pmp_map;
2378 pp->pp_flags &= ~MV_PP_FLAG_DELAYED_EH;
2379 for (pmp = 0; pmp_map != 0; pmp++) {
2380 unsigned int this_pmp = (1 << pmp);
2381 if (pmp_map & this_pmp) {
2382 struct ata_link *link = &ap->pmp_link[pmp];
2383 pmp_map &= ~this_pmp;
2384 ata_eh_analyze_ncq_error(link);
2387 ata_port_freeze(ap);
2389 sata_pmp_error_handler(ap);
2392 static unsigned int mv_get_err_pmp_map(struct ata_port *ap)
2394 void __iomem *port_mmio = mv_ap_base(ap);
2396 return readl(port_mmio + SATA_TESTCTL) >> 16;
2399 static void mv_pmp_eh_prep(struct ata_port *ap, unsigned int pmp_map)
2401 struct ata_eh_info *ehi;
2405 * Initialize EH info for PMPs which saw device errors
2407 ehi = &ap->link.eh_info;
2408 for (pmp = 0; pmp_map != 0; pmp++) {
2409 unsigned int this_pmp = (1 << pmp);
2410 if (pmp_map & this_pmp) {
2411 struct ata_link *link = &ap->pmp_link[pmp];
2413 pmp_map &= ~this_pmp;
2414 ehi = &link->eh_info;
2415 ata_ehi_clear_desc(ehi);
2416 ata_ehi_push_desc(ehi, "dev err");
2417 ehi->err_mask |= AC_ERR_DEV;
2418 ehi->action |= ATA_EH_RESET;
2419 ata_link_abort(link);
2424 static int mv_req_q_empty(struct ata_port *ap)
2426 void __iomem *port_mmio = mv_ap_base(ap);
2427 u32 in_ptr, out_ptr;
2429 in_ptr = (readl(port_mmio + EDMA_REQ_Q_IN_PTR)
2430 >> EDMA_REQ_Q_PTR_SHIFT) & MV_MAX_Q_DEPTH_MASK;
2431 out_ptr = (readl(port_mmio + EDMA_REQ_Q_OUT_PTR)
2432 >> EDMA_REQ_Q_PTR_SHIFT) & MV_MAX_Q_DEPTH_MASK;
2433 return (in_ptr == out_ptr); /* 1 == queue_is_empty */
2436 static int mv_handle_fbs_ncq_dev_err(struct ata_port *ap)
2438 struct mv_port_priv *pp = ap->private_data;
2440 unsigned int old_map, new_map;
2443 * Device error during FBS+NCQ operation:
2445 * Set a port flag to prevent further I/O being enqueued.
2446 * Leave the EDMA running to drain outstanding commands from this port.
2447 * Perform the post-mortem/EH only when all responses are complete.
2448 * Follow recovery sequence from 6042/7042 datasheet (7.3.15.4.2.2).
2450 if (!(pp->pp_flags & MV_PP_FLAG_DELAYED_EH)) {
2451 pp->pp_flags |= MV_PP_FLAG_DELAYED_EH;
2452 pp->delayed_eh_pmp_map = 0;
2454 old_map = pp->delayed_eh_pmp_map;
2455 new_map = old_map | mv_get_err_pmp_map(ap);
2457 if (old_map != new_map) {
2458 pp->delayed_eh_pmp_map = new_map;
2459 mv_pmp_eh_prep(ap, new_map & ~old_map);
2461 failed_links = hweight16(new_map);
2463 ata_port_printk(ap, KERN_INFO, "%s: pmp_map=%04x qc_map=%04x "
2464 "failed_links=%d nr_active_links=%d\n",
2465 __func__, pp->delayed_eh_pmp_map,
2466 ap->qc_active, failed_links,
2467 ap->nr_active_links);
2469 if (ap->nr_active_links <= failed_links && mv_req_q_empty(ap)) {
2470 mv_process_crpb_entries(ap, pp);
2473 ata_port_printk(ap, KERN_INFO, "%s: done\n", __func__);
2474 return 1; /* handled */
2476 ata_port_printk(ap, KERN_INFO, "%s: waiting\n", __func__);
2477 return 1; /* handled */
2480 static int mv_handle_fbs_non_ncq_dev_err(struct ata_port *ap)
2483 * Possible future enhancement:
2485 * FBS+non-NCQ operation is not yet implemented.
2486 * See related notes in mv_edma_cfg().
2488 * Device error during FBS+non-NCQ operation:
2490 * We need to snapshot the shadow registers for each failed command.
2491 * Follow recovery sequence from 6042/7042 datasheet (7.3.15.4.2.3).
2493 return 0; /* not handled */
2496 static int mv_handle_dev_err(struct ata_port *ap, u32 edma_err_cause)
2498 struct mv_port_priv *pp = ap->private_data;
2500 if (!(pp->pp_flags & MV_PP_FLAG_EDMA_EN))
2501 return 0; /* EDMA was not active: not handled */
2502 if (!(pp->pp_flags & MV_PP_FLAG_FBS_EN))
2503 return 0; /* FBS was not active: not handled */
2505 if (!(edma_err_cause & EDMA_ERR_DEV))
2506 return 0; /* non DEV error: not handled */
2507 edma_err_cause &= ~EDMA_ERR_IRQ_TRANSIENT;
2508 if (edma_err_cause & ~(EDMA_ERR_DEV | EDMA_ERR_SELF_DIS))
2509 return 0; /* other problems: not handled */
2511 if (pp->pp_flags & MV_PP_FLAG_NCQ_EN) {
2513 * EDMA should NOT have self-disabled for this case.
2514 * If it did, then something is wrong elsewhere,
2515 * and we cannot handle it here.
2517 if (edma_err_cause & EDMA_ERR_SELF_DIS) {
2518 ata_port_printk(ap, KERN_WARNING,
2519 "%s: err_cause=0x%x pp_flags=0x%x\n",
2520 __func__, edma_err_cause, pp->pp_flags);
2521 return 0; /* not handled */
2523 return mv_handle_fbs_ncq_dev_err(ap);
2526 * EDMA should have self-disabled for this case.
2527 * If it did not, then something is wrong elsewhere,
2528 * and we cannot handle it here.
2530 if (!(edma_err_cause & EDMA_ERR_SELF_DIS)) {
2531 ata_port_printk(ap, KERN_WARNING,
2532 "%s: err_cause=0x%x pp_flags=0x%x\n",
2533 __func__, edma_err_cause, pp->pp_flags);
2534 return 0; /* not handled */
2536 return mv_handle_fbs_non_ncq_dev_err(ap);
2538 return 0; /* not handled */
2541 static void mv_unexpected_intr(struct ata_port *ap, int edma_was_enabled)
2543 struct ata_eh_info *ehi = &ap->link.eh_info;
2544 char *when = "idle";
2546 ata_ehi_clear_desc(ehi);
2547 if (ap->flags & ATA_FLAG_DISABLED) {
2549 } else if (edma_was_enabled) {
2550 when = "EDMA enabled";
2552 struct ata_queued_cmd *qc = ata_qc_from_tag(ap, ap->link.active_tag);
2553 if (qc && (qc->tf.flags & ATA_TFLAG_POLLING))
2556 ata_ehi_push_desc(ehi, "unexpected device interrupt while %s", when);
2557 ehi->err_mask |= AC_ERR_OTHER;
2558 ehi->action |= ATA_EH_RESET;
2559 ata_port_freeze(ap);
2563 * mv_err_intr - Handle error interrupts on the port
2564 * @ap: ATA channel to manipulate
2566 * Most cases require a full reset of the chip's state machine,
2567 * which also performs a COMRESET.
2568 * Also, if the port disabled DMA, update our cached copy to match.
2571 * Inherited from caller.
2573 static void mv_err_intr(struct ata_port *ap)
2575 void __iomem *port_mmio = mv_ap_base(ap);
2576 u32 edma_err_cause, eh_freeze_mask, serr = 0;
2578 struct mv_port_priv *pp = ap->private_data;
2579 struct mv_host_priv *hpriv = ap->host->private_data;
2580 unsigned int action = 0, err_mask = 0;
2581 struct ata_eh_info *ehi = &ap->link.eh_info;
2582 struct ata_queued_cmd *qc;
2586 * Read and clear the SError and err_cause bits.
2587 * For GenIIe, if EDMA_ERR_TRANS_IRQ_7 is set, we also must read/clear
2588 * the FIS_IRQ_CAUSE register before clearing edma_err_cause.
2590 sata_scr_read(&ap->link, SCR_ERROR, &serr);
2591 sata_scr_write_flush(&ap->link, SCR_ERROR, serr);
2593 edma_err_cause = readl(port_mmio + EDMA_ERR_IRQ_CAUSE);
2594 if (IS_GEN_IIE(hpriv) && (edma_err_cause & EDMA_ERR_TRANS_IRQ_7)) {
2595 fis_cause = readl(port_mmio + FIS_IRQ_CAUSE);
2596 writelfl(~fis_cause, port_mmio + FIS_IRQ_CAUSE);
2598 writelfl(~edma_err_cause, port_mmio + EDMA_ERR_IRQ_CAUSE);
2600 if (edma_err_cause & EDMA_ERR_DEV) {
2602 * Device errors during FIS-based switching operation
2603 * require special handling.
2605 if (mv_handle_dev_err(ap, edma_err_cause))
2609 qc = mv_get_active_qc(ap);
2610 ata_ehi_clear_desc(ehi);
2611 ata_ehi_push_desc(ehi, "edma_err_cause=%08x pp_flags=%08x",
2612 edma_err_cause, pp->pp_flags);
2614 if (IS_GEN_IIE(hpriv) && (edma_err_cause & EDMA_ERR_TRANS_IRQ_7)) {
2615 ata_ehi_push_desc(ehi, "fis_cause=%08x", fis_cause);
2616 if (fis_cause & FIS_IRQ_CAUSE_AN) {
2617 u32 ec = edma_err_cause &
2618 ~(EDMA_ERR_TRANS_IRQ_7 | EDMA_ERR_IRQ_TRANSIENT);
2619 sata_async_notification(ap);
2621 return; /* Just an AN; no need for the nukes */
2622 ata_ehi_push_desc(ehi, "SDB notify");
2626 * All generations share these EDMA error cause bits:
2628 if (edma_err_cause & EDMA_ERR_DEV) {
2629 err_mask |= AC_ERR_DEV;
2630 action |= ATA_EH_RESET;
2631 ata_ehi_push_desc(ehi, "dev error");
2633 if (edma_err_cause & (EDMA_ERR_D_PAR | EDMA_ERR_PRD_PAR |
2634 EDMA_ERR_CRQB_PAR | EDMA_ERR_CRPB_PAR |
2635 EDMA_ERR_INTRL_PAR)) {
2636 err_mask |= AC_ERR_ATA_BUS;
2637 action |= ATA_EH_RESET;
2638 ata_ehi_push_desc(ehi, "parity error");
2640 if (edma_err_cause & (EDMA_ERR_DEV_DCON | EDMA_ERR_DEV_CON)) {
2641 ata_ehi_hotplugged(ehi);
2642 ata_ehi_push_desc(ehi, edma_err_cause & EDMA_ERR_DEV_DCON ?
2643 "dev disconnect" : "dev connect");
2644 action |= ATA_EH_RESET;
2648 * Gen-I has a different SELF_DIS bit,
2649 * different FREEZE bits, and no SERR bit:
2651 if (IS_GEN_I(hpriv)) {
2652 eh_freeze_mask = EDMA_EH_FREEZE_5;
2653 if (edma_err_cause & EDMA_ERR_SELF_DIS_5) {
2654 pp->pp_flags &= ~MV_PP_FLAG_EDMA_EN;
2655 ata_ehi_push_desc(ehi, "EDMA self-disable");
2658 eh_freeze_mask = EDMA_EH_FREEZE;
2659 if (edma_err_cause & EDMA_ERR_SELF_DIS) {
2660 pp->pp_flags &= ~MV_PP_FLAG_EDMA_EN;
2661 ata_ehi_push_desc(ehi, "EDMA self-disable");
2663 if (edma_err_cause & EDMA_ERR_SERR) {
2664 ata_ehi_push_desc(ehi, "SError=%08x", serr);
2665 err_mask |= AC_ERR_ATA_BUS;
2666 action |= ATA_EH_RESET;
2671 err_mask = AC_ERR_OTHER;
2672 action |= ATA_EH_RESET;
2675 ehi->serror |= serr;
2676 ehi->action |= action;
2679 qc->err_mask |= err_mask;
2681 ehi->err_mask |= err_mask;
2683 if (err_mask == AC_ERR_DEV) {
2685 * Cannot do ata_port_freeze() here,
2686 * because it would kill PIO access,
2687 * which is needed for further diagnosis.
2691 } else if (edma_err_cause & eh_freeze_mask) {
2693 * Note to self: ata_port_freeze() calls ata_port_abort()
2695 ata_port_freeze(ap);
2702 ata_link_abort(qc->dev->link);
2708 static void mv_process_crpb_response(struct ata_port *ap,
2709 struct mv_crpb *response, unsigned int tag, int ncq_enabled)
2711 struct ata_queued_cmd *qc = ata_qc_from_tag(ap, tag);
2715 u16 edma_status = le16_to_cpu(response->flags);
2717 * edma_status from a response queue entry:
2718 * LSB is from EDMA_ERR_IRQ_CAUSE (non-NCQ only).
2719 * MSB is saved ATA status from command completion.
2722 u8 err_cause = edma_status & 0xff & ~EDMA_ERR_DEV;
2725 * Error will be seen/handled by mv_err_intr().
2726 * So do nothing at all here.
2731 ata_status = edma_status >> CRPB_FLAG_STATUS_SHIFT;
2732 if (!ac_err_mask(ata_status))
2733 ata_qc_complete(qc);
2734 /* else: leave it for mv_err_intr() */
2736 ata_port_printk(ap, KERN_ERR, "%s: no qc for tag=%d\n",
2741 static void mv_process_crpb_entries(struct ata_port *ap, struct mv_port_priv *pp)
2743 void __iomem *port_mmio = mv_ap_base(ap);
2744 struct mv_host_priv *hpriv = ap->host->private_data;
2746 bool work_done = false;
2747 int ncq_enabled = (pp->pp_flags & MV_PP_FLAG_NCQ_EN);
2749 /* Get the hardware queue position index */
2750 in_index = (readl(port_mmio + EDMA_RSP_Q_IN_PTR)
2751 >> EDMA_RSP_Q_PTR_SHIFT) & MV_MAX_Q_DEPTH_MASK;
2753 /* Process new responses from since the last time we looked */
2754 while (in_index != pp->resp_idx) {
2756 struct mv_crpb *response = &pp->crpb[pp->resp_idx];
2758 pp->resp_idx = (pp->resp_idx + 1) & MV_MAX_Q_DEPTH_MASK;
2760 if (IS_GEN_I(hpriv)) {
2761 /* 50xx: no NCQ, only one command active at a time */
2762 tag = ap->link.active_tag;
2764 /* Gen II/IIE: get command tag from CRPB entry */
2765 tag = le16_to_cpu(response->id) & 0x1f;
2767 mv_process_crpb_response(ap, response, tag, ncq_enabled);
2771 /* Update the software queue position index in hardware */
2773 writelfl((pp->crpb_dma & EDMA_RSP_Q_BASE_LO_MASK) |
2774 (pp->resp_idx << EDMA_RSP_Q_PTR_SHIFT),
2775 port_mmio + EDMA_RSP_Q_OUT_PTR);
2778 static void mv_port_intr(struct ata_port *ap, u32 port_cause)
2780 struct mv_port_priv *pp;
2781 int edma_was_enabled;
2783 if (!ap || (ap->flags & ATA_FLAG_DISABLED)) {
2784 mv_unexpected_intr(ap, 0);
2788 * Grab a snapshot of the EDMA_EN flag setting,
2789 * so that we have a consistent view for this port,
2790 * even if something we call of our routines changes it.
2792 pp = ap->private_data;
2793 edma_was_enabled = (pp->pp_flags & MV_PP_FLAG_EDMA_EN);
2795 * Process completed CRPB response(s) before other events.
2797 if (edma_was_enabled && (port_cause & DONE_IRQ)) {
2798 mv_process_crpb_entries(ap, pp);
2799 if (pp->pp_flags & MV_PP_FLAG_DELAYED_EH)
2800 mv_handle_fbs_ncq_dev_err(ap);
2803 * Handle chip-reported errors, or continue on to handle PIO.
2805 if (unlikely(port_cause & ERR_IRQ)) {
2807 } else if (!edma_was_enabled) {
2808 struct ata_queued_cmd *qc = mv_get_active_qc(ap);
2810 ata_sff_host_intr(ap, qc);
2812 mv_unexpected_intr(ap, edma_was_enabled);
2817 * mv_host_intr - Handle all interrupts on the given host controller
2818 * @host: host specific structure
2819 * @main_irq_cause: Main interrupt cause register for the chip.
2822 * Inherited from caller.
2824 static int mv_host_intr(struct ata_host *host, u32 main_irq_cause)
2826 struct mv_host_priv *hpriv = host->private_data;
2827 void __iomem *mmio = hpriv->base, *hc_mmio;
2828 unsigned int handled = 0, port;
2830 /* If asserted, clear the "all ports" IRQ coalescing bit */
2831 if (main_irq_cause & ALL_PORTS_COAL_DONE)
2832 writel(~ALL_PORTS_COAL_IRQ, mmio + IRQ_COAL_CAUSE);
2834 for (port = 0; port < hpriv->n_ports; port++) {
2835 struct ata_port *ap = host->ports[port];
2836 unsigned int p, shift, hardport, port_cause;
2838 MV_PORT_TO_SHIFT_AND_HARDPORT(port, shift, hardport);
2840 * Each hc within the host has its own hc_irq_cause register,
2841 * where the interrupting ports bits get ack'd.
2843 if (hardport == 0) { /* first port on this hc ? */
2844 u32 hc_cause = (main_irq_cause >> shift) & HC0_IRQ_PEND;
2845 u32 port_mask, ack_irqs;
2847 * Skip this entire hc if nothing pending for any ports
2850 port += MV_PORTS_PER_HC - 1;
2854 * We don't need/want to read the hc_irq_cause register,
2855 * because doing so hurts performance, and
2856 * main_irq_cause already gives us everything we need.
2858 * But we do have to *write* to the hc_irq_cause to ack
2859 * the ports that we are handling this time through.
2861 * This requires that we create a bitmap for those
2862 * ports which interrupted us, and use that bitmap
2863 * to ack (only) those ports via hc_irq_cause.
2866 if (hc_cause & PORTS_0_3_COAL_DONE)
2867 ack_irqs = HC_COAL_IRQ;
2868 for (p = 0; p < MV_PORTS_PER_HC; ++p) {
2869 if ((port + p) >= hpriv->n_ports)
2871 port_mask = (DONE_IRQ | ERR_IRQ) << (p * 2);
2872 if (hc_cause & port_mask)
2873 ack_irqs |= (DMA_IRQ | DEV_IRQ) << p;
2875 hc_mmio = mv_hc_base_from_port(mmio, port);
2876 writelfl(~ack_irqs, hc_mmio + HC_IRQ_CAUSE);
2880 * Handle interrupts signalled for this port:
2882 port_cause = (main_irq_cause >> shift) & (DONE_IRQ | ERR_IRQ);
2884 mv_port_intr(ap, port_cause);
2889 static int mv_pci_error(struct ata_host *host, void __iomem *mmio)
2891 struct mv_host_priv *hpriv = host->private_data;
2892 struct ata_port *ap;
2893 struct ata_queued_cmd *qc;
2894 struct ata_eh_info *ehi;
2895 unsigned int i, err_mask, printed = 0;
2898 err_cause = readl(mmio + hpriv->irq_cause_offset);
2900 dev_printk(KERN_ERR, host->dev, "PCI ERROR; PCI IRQ cause=0x%08x\n",
2903 DPRINTK("All regs @ PCI error\n");
2904 mv_dump_all_regs(mmio, -1, to_pci_dev(host->dev));
2906 writelfl(0, mmio + hpriv->irq_cause_offset);
2908 for (i = 0; i < host->n_ports; i++) {
2909 ap = host->ports[i];
2910 if (!ata_link_offline(&ap->link)) {
2911 ehi = &ap->link.eh_info;
2912 ata_ehi_clear_desc(ehi);
2914 ata_ehi_push_desc(ehi,
2915 "PCI err cause 0x%08x", err_cause);
2916 err_mask = AC_ERR_HOST_BUS;
2917 ehi->action = ATA_EH_RESET;
2918 qc = ata_qc_from_tag(ap, ap->link.active_tag);
2920 qc->err_mask |= err_mask;
2922 ehi->err_mask |= err_mask;
2924 ata_port_freeze(ap);
2927 return 1; /* handled */
2931 * mv_interrupt - Main interrupt event handler
2933 * @dev_instance: private data; in this case the host structure
2935 * Read the read only register to determine if any host
2936 * controllers have pending interrupts. If so, call lower level
2937 * routine to handle. Also check for PCI errors which are only
2941 * This routine holds the host lock while processing pending
2944 static irqreturn_t mv_interrupt(int irq, void *dev_instance)
2946 struct ata_host *host = dev_instance;
2947 struct mv_host_priv *hpriv = host->private_data;
2948 unsigned int handled = 0;
2949 int using_msi = hpriv->hp_flags & MV_HP_FLAG_MSI;
2950 u32 main_irq_cause, pending_irqs;
2952 spin_lock(&host->lock);
2954 /* for MSI: block new interrupts while in here */
2956 mv_write_main_irq_mask(0, hpriv);
2958 main_irq_cause = readl(hpriv->main_irq_cause_addr);
2959 pending_irqs = main_irq_cause & hpriv->main_irq_mask;
2961 * Deal with cases where we either have nothing pending, or have read
2962 * a bogus register value which can indicate HW removal or PCI fault.
2964 if (pending_irqs && main_irq_cause != 0xffffffffU) {
2965 if (unlikely((pending_irqs & PCI_ERR) && !IS_SOC(hpriv)))
2966 handled = mv_pci_error(host, hpriv->base);
2968 handled = mv_host_intr(host, pending_irqs);
2971 /* for MSI: unmask; interrupt cause bits will retrigger now */
2973 mv_write_main_irq_mask(hpriv->main_irq_mask, hpriv);
2975 spin_unlock(&host->lock);
2977 return IRQ_RETVAL(handled);
2980 static unsigned int mv5_scr_offset(unsigned int sc_reg_in)
2984 switch (sc_reg_in) {
2988 ofs = sc_reg_in * sizeof(u32);
2997 static int mv5_scr_read(struct ata_link *link, unsigned int sc_reg_in, u32 *val)
2999 struct mv_host_priv *hpriv = link->ap->host->private_data;
3000 void __iomem *mmio = hpriv->base;
3001 void __iomem *addr = mv5_phy_base(mmio, link->ap->port_no);
3002 unsigned int ofs = mv5_scr_offset(sc_reg_in);
3004 if (ofs != 0xffffffffU) {
3005 *val = readl(addr + ofs);
3011 static int mv5_scr_write(struct ata_link *link, unsigned int sc_reg_in, u32 val)
3013 struct mv_host_priv *hpriv = link->ap->host->private_data;
3014 void __iomem *mmio = hpriv->base;
3015 void __iomem *addr = mv5_phy_base(mmio, link->ap->port_no);
3016 unsigned int ofs = mv5_scr_offset(sc_reg_in);
3018 if (ofs != 0xffffffffU) {
3019 writelfl(val, addr + ofs);
3025 static void mv5_reset_bus(struct ata_host *host, void __iomem *mmio)
3027 struct pci_dev *pdev = to_pci_dev(host->dev);
3030 early_5080 = (pdev->device == 0x5080) && (pdev->revision == 0);
3033 u32 tmp = readl(mmio + MV_PCI_EXP_ROM_BAR_CTL);
3035 writel(tmp, mmio + MV_PCI_EXP_ROM_BAR_CTL);
3038 mv_reset_pci_bus(host, mmio);
3041 static void mv5_reset_flash(struct mv_host_priv *hpriv, void __iomem *mmio)
3043 writel(0x0fcfffff, mmio + FLASH_CTL);
3046 static void mv5_read_preamp(struct mv_host_priv *hpriv, int idx,
3049 void __iomem *phy_mmio = mv5_phy_base(mmio, idx);
3052 tmp = readl(phy_mmio + MV5_PHY_MODE);
3054 hpriv->signal[idx].pre = tmp & 0x1800; /* bits 12:11 */
3055 hpriv->signal[idx].amps = tmp & 0xe0; /* bits 7:5 */
3058 static void mv5_enable_leds(struct mv_host_priv *hpriv, void __iomem *mmio)
3062 writel(0, mmio + GPIO_PORT_CTL);
3064 /* FIXME: handle MV_HP_ERRATA_50XXB2 errata */
3066 tmp = readl(mmio + MV_PCI_EXP_ROM_BAR_CTL);
3068 writel(tmp, mmio + MV_PCI_EXP_ROM_BAR_CTL);
3071 static void mv5_phy_errata(struct mv_host_priv *hpriv, void __iomem *mmio,
3074 void __iomem *phy_mmio = mv5_phy_base(mmio, port);
3075 const u32 mask = (1<<12) | (1<<11) | (1<<7) | (1<<6) | (1<<5);
3077 int fix_apm_sq = (hpriv->hp_flags & MV_HP_ERRATA_50XXB0);
3080 tmp = readl(phy_mmio + MV5_LTMODE);
3082 writel(tmp, phy_mmio + MV5_LTMODE);
3084 tmp = readl(phy_mmio + MV5_PHY_CTL);
3087 writel(tmp, phy_mmio + MV5_PHY_CTL);
3090 tmp = readl(phy_mmio + MV5_PHY_MODE);
3092 tmp |= hpriv->signal[port].pre;
3093 tmp |= hpriv->signal[port].amps;
3094 writel(tmp, phy_mmio + MV5_PHY_MODE);
3099 #define ZERO(reg) writel(0, port_mmio + (reg))
3100 static void mv5_reset_hc_port(struct mv_host_priv *hpriv, void __iomem *mmio,
3103 void __iomem *port_mmio = mv_port_base(mmio, port);
3105 mv_reset_channel(hpriv, mmio, port);
3107 ZERO(0x028); /* command */
3108 writel(0x11f, port_mmio + EDMA_CFG);
3109 ZERO(0x004); /* timer */
3110 ZERO(0x008); /* irq err cause */
3111 ZERO(0x00c); /* irq err mask */
3112 ZERO(0x010); /* rq bah */
3113 ZERO(0x014); /* rq inp */
3114 ZERO(0x018); /* rq outp */
3115 ZERO(0x01c); /* respq bah */
3116 ZERO(0x024); /* respq outp */
3117 ZERO(0x020); /* respq inp */
3118 ZERO(0x02c); /* test control */
3119 writel(0xbc, port_mmio + EDMA_IORDY_TMOUT);
3123 #define ZERO(reg) writel(0, hc_mmio + (reg))
3124 static void mv5_reset_one_hc(struct mv_host_priv *hpriv, void __iomem *mmio,
3127 void __iomem *hc_mmio = mv_hc_base(mmio, hc);
3135 tmp = readl(hc_mmio + 0x20);
3138 writel(tmp, hc_mmio + 0x20);
3142 static int mv5_reset_hc(struct mv_host_priv *hpriv, void __iomem *mmio,
3145 unsigned int hc, port;
3147 for (hc = 0; hc < n_hc; hc++) {
3148 for (port = 0; port < MV_PORTS_PER_HC; port++)
3149 mv5_reset_hc_port(hpriv, mmio,
3150 (hc * MV_PORTS_PER_HC) + port);
3152 mv5_reset_one_hc(hpriv, mmio, hc);
3159 #define ZERO(reg) writel(0, mmio + (reg))
3160 static void mv_reset_pci_bus(struct ata_host *host, void __iomem *mmio)
3162 struct mv_host_priv *hpriv = host->private_data;
3165 tmp = readl(mmio + MV_PCI_MODE);
3167 writel(tmp, mmio + MV_PCI_MODE);
3169 ZERO(MV_PCI_DISC_TIMER);
3170 ZERO(MV_PCI_MSI_TRIGGER);
3171 writel(0x000100ff, mmio + MV_PCI_XBAR_TMOUT);
3172 ZERO(MV_PCI_SERR_MASK);
3173 ZERO(hpriv->irq_cause_offset);
3174 ZERO(hpriv->irq_mask_offset);
3175 ZERO(MV_PCI_ERR_LOW_ADDRESS);
3176 ZERO(MV_PCI_ERR_HIGH_ADDRESS);
3177 ZERO(MV_PCI_ERR_ATTRIBUTE);
3178 ZERO(MV_PCI_ERR_COMMAND);
3182 static void mv6_reset_flash(struct mv_host_priv *hpriv, void __iomem *mmio)
3186 mv5_reset_flash(hpriv, mmio);
3188 tmp = readl(mmio + GPIO_PORT_CTL);
3190 tmp |= (1 << 5) | (1 << 6);
3191 writel(tmp, mmio + GPIO_PORT_CTL);
3195 * mv6_reset_hc - Perform the 6xxx global soft reset
3196 * @mmio: base address of the HBA
3198 * This routine only applies to 6xxx parts.
3201 * Inherited from caller.
3203 static int mv6_reset_hc(struct mv_host_priv *hpriv, void __iomem *mmio,
3206 void __iomem *reg = mmio + PCI_MAIN_CMD_STS;
3210 /* Following procedure defined in PCI "main command and status
3214 writel(t | STOP_PCI_MASTER, reg);
3216 for (i = 0; i < 1000; i++) {
3219 if (PCI_MASTER_EMPTY & t)
3222 if (!(PCI_MASTER_EMPTY & t)) {
3223 printk(KERN_ERR DRV_NAME ": PCI master won't flush\n");
3231 writel(t | GLOB_SFT_RST, reg);
3234 } while (!(GLOB_SFT_RST & t) && (i-- > 0));
3236 if (!(GLOB_SFT_RST & t)) {
3237 printk(KERN_ERR DRV_NAME ": can't set global reset\n");
3242 /* clear reset and *reenable the PCI master* (not mentioned in spec) */
3245 writel(t & ~(GLOB_SFT_RST | STOP_PCI_MASTER), reg);
3248 } while ((GLOB_SFT_RST & t) && (i-- > 0));
3250 if (GLOB_SFT_RST & t) {
3251 printk(KERN_ERR DRV_NAME ": can't clear global reset\n");
3258 static void mv6_read_preamp(struct mv_host_priv *hpriv, int idx,
3261 void __iomem *port_mmio;
3264 tmp = readl(mmio + RESET_CFG);
3265 if ((tmp & (1 << 0)) == 0) {
3266 hpriv->signal[idx].amps = 0x7 << 8;
3267 hpriv->signal[idx].pre = 0x1 << 5;
3271 port_mmio = mv_port_base(mmio, idx);
3272 tmp = readl(port_mmio + PHY_MODE2);
3274 hpriv->signal[idx].amps = tmp & 0x700; /* bits 10:8 */
3275 hpriv->signal[idx].pre = tmp & 0xe0; /* bits 7:5 */
3278 static void mv6_enable_leds(struct mv_host_priv *hpriv, void __iomem *mmio)
3280 writel(0x00000060, mmio + GPIO_PORT_CTL);
3283 static void mv6_phy_errata(struct mv_host_priv *hpriv, void __iomem *mmio,
3286 void __iomem *port_mmio = mv_port_base(mmio, port);
3288 u32 hp_flags = hpriv->hp_flags;
3290 hp_flags & (MV_HP_ERRATA_60X1B2 | MV_HP_ERRATA_60X1C0);
3292 hp_flags & (MV_HP_ERRATA_60X1B2 | MV_HP_ERRATA_60X1C0);
3295 if (fix_phy_mode2) {
3296 m2 = readl(port_mmio + PHY_MODE2);
3299 writel(m2, port_mmio + PHY_MODE2);
3303 m2 = readl(port_mmio + PHY_MODE2);
3304 m2 &= ~((1 << 16) | (1 << 31));
3305 writel(m2, port_mmio + PHY_MODE2);
3311 * Gen-II/IIe PHY_MODE3 errata RM#2:
3312 * Achieves better receiver noise performance than the h/w default:
3314 m3 = readl(port_mmio + PHY_MODE3);
3315 m3 = (m3 & 0x1f) | (0x5555601 << 5);
3317 /* Guideline 88F5182 (GL# SATA-S11) */
3321 if (fix_phy_mode4) {
3322 u32 m4 = readl(port_mmio + PHY_MODE4);
3324 * Enforce reserved-bit restrictions on GenIIe devices only.
3325 * For earlier chipsets, force only the internal config field
3326 * (workaround for errata FEr SATA#10 part 1).
3328 if (IS_GEN_IIE(hpriv))
3329 m4 = (m4 & ~PHY_MODE4_RSVD_ZEROS) | PHY_MODE4_RSVD_ONES;
3331 m4 = (m4 & ~PHY_MODE4_CFG_MASK) | PHY_MODE4_CFG_VALUE;
3332 writel(m4, port_mmio + PHY_MODE4);
3335 * Workaround for 60x1-B2 errata SATA#13:
3336 * Any write to PHY_MODE4 (above) may corrupt PHY_MODE3,
3337 * so we must always rewrite PHY_MODE3 after PHY_MODE4.
3338 * Or ensure we use writelfl() when writing PHY_MODE4.
3340 writel(m3, port_mmio + PHY_MODE3);
3342 /* Revert values of pre-emphasis and signal amps to the saved ones */
3343 m2 = readl(port_mmio + PHY_MODE2);
3345 m2 &= ~MV_M2_PREAMP_MASK;
3346 m2 |= hpriv->signal[port].amps;
3347 m2 |= hpriv->signal[port].pre;
3350 /* according to mvSata 3.6.1, some IIE values are fixed */
3351 if (IS_GEN_IIE(hpriv)) {
3356 writel(m2, port_mmio + PHY_MODE2);
3359 /* TODO: use the generic LED interface to configure the SATA Presence */
3360 /* & Acitivy LEDs on the board */
3361 static void mv_soc_enable_leds(struct mv_host_priv *hpriv,
3367 static void mv_soc_read_preamp(struct mv_host_priv *hpriv, int idx,
3370 void __iomem *port_mmio;
3373 port_mmio = mv_port_base(mmio, idx);
3374 tmp = readl(port_mmio + PHY_MODE2);
3376 hpriv->signal[idx].amps = tmp & 0x700; /* bits 10:8 */
3377 hpriv->signal[idx].pre = tmp & 0xe0; /* bits 7:5 */
3381 #define ZERO(reg) writel(0, port_mmio + (reg))
3382 static void mv_soc_reset_hc_port(struct mv_host_priv *hpriv,
3383 void __iomem *mmio, unsigned int port)
3385 void __iomem *port_mmio = mv_port_base(mmio, port);
3387 mv_reset_channel(hpriv, mmio, port);
3389 ZERO(0x028); /* command */
3390 writel(0x101f, port_mmio + EDMA_CFG);
3391 ZERO(0x004); /* timer */
3392 ZERO(0x008); /* irq err cause */
3393 ZERO(0x00c); /* irq err mask */
3394 ZERO(0x010); /* rq bah */
3395 ZERO(0x014); /* rq inp */
3396 ZERO(0x018); /* rq outp */
3397 ZERO(0x01c); /* respq bah */
3398 ZERO(0x024); /* respq outp */
3399 ZERO(0x020); /* respq inp */
3400 ZERO(0x02c); /* test control */
3401 writel(0x800, port_mmio + EDMA_IORDY_TMOUT);
3406 #define ZERO(reg) writel(0, hc_mmio + (reg))
3407 static void mv_soc_reset_one_hc(struct mv_host_priv *hpriv,
3410 void __iomem *hc_mmio = mv_hc_base(mmio, 0);
3420 static int mv_soc_reset_hc(struct mv_host_priv *hpriv,
3421 void __iomem *mmio, unsigned int n_hc)
3425 for (port = 0; port < hpriv->n_ports; port++)
3426 mv_soc_reset_hc_port(hpriv, mmio, port);
3428 mv_soc_reset_one_hc(hpriv, mmio);
3433 static void mv_soc_reset_flash(struct mv_host_priv *hpriv,
3439 static void mv_soc_reset_bus(struct ata_host *host, void __iomem *mmio)
3444 static void mv_soc_65n_phy_errata(struct mv_host_priv *hpriv,
3445 void __iomem *mmio, unsigned int port)
3447 void __iomem *port_mmio = mv_port_base(mmio, port);
3450 reg = readl(port_mmio + PHY_MODE3);
3451 reg &= ~(0x3 << 27); /* SELMUPF (bits 28:27) to 1 */
3453 reg &= ~(0x3 << 29); /* SELMUPI (bits 30:29) to 1 */
3455 writel(reg, port_mmio + PHY_MODE3);
3457 reg = readl(port_mmio + PHY_MODE4);
3458 reg &= ~0x1; /* SATU_OD8 (bit 0) to 0, reserved bit 16 must be set */
3460 writel(reg, port_mmio + PHY_MODE4);
3462 reg = readl(port_mmio + PHY_MODE9_GEN2);
3463 reg &= ~0xf; /* TXAMP[3:0] (bits 3:0) to 8 */
3465 reg &= ~(0x1 << 14); /* TXAMP[4] (bit 14) to 0 */
3466 writel(reg, port_mmio + PHY_MODE9_GEN2);
3468 reg = readl(port_mmio + PHY_MODE9_GEN1);
3469 reg &= ~0xf; /* TXAMP[3:0] (bits 3:0) to 8 */
3471 reg &= ~(0x1 << 14); /* TXAMP[4] (bit 14) to 0 */
3472 writel(reg, port_mmio + PHY_MODE9_GEN1);
3476 * soc_is_65 - check if the soc is 65 nano device
3478 * Detect the type of the SoC, this is done by reading the PHYCFG_OFS
3479 * register, this register should contain non-zero value and it exists only
3480 * in the 65 nano devices, when reading it from older devices we get 0.
3482 static bool soc_is_65n(struct mv_host_priv *hpriv)
3484 void __iomem *port0_mmio = mv_port_base(hpriv->base, 0);
3486 if (readl(port0_mmio + PHYCFG_OFS))
3491 static void mv_setup_ifcfg(void __iomem *port_mmio, int want_gen2i)
3493 u32 ifcfg = readl(port_mmio + SATA_IFCFG);
3495 ifcfg = (ifcfg & 0xf7f) | 0x9b1000; /* from chip spec */
3497 ifcfg |= (1 << 7); /* enable gen2i speed */
3498 writelfl(ifcfg, port_mmio + SATA_IFCFG);
3501 static void mv_reset_channel(struct mv_host_priv *hpriv, void __iomem *mmio,
3502 unsigned int port_no)
3504 void __iomem *port_mmio = mv_port_base(mmio, port_no);
3507 * The datasheet warns against setting EDMA_RESET when EDMA is active
3508 * (but doesn't say what the problem might be). So we first try
3509 * to disable the EDMA engine before doing the EDMA_RESET operation.
3511 mv_stop_edma_engine(port_mmio);
3512 writelfl(EDMA_RESET, port_mmio + EDMA_CMD);
3514 if (!IS_GEN_I(hpriv)) {
3515 /* Enable 3.0gb/s link speed: this survives EDMA_RESET */
3516 mv_setup_ifcfg(port_mmio, 1);
3519 * Strobing EDMA_RESET here causes a hard reset of the SATA transport,
3520 * link, and physical layers. It resets all SATA interface registers
3521 * (except for SATA_IFCFG), and issues a COMRESET to the dev.
3523 writelfl(EDMA_RESET, port_mmio + EDMA_CMD);
3524 udelay(25); /* allow reset propagation */
3525 writelfl(0, port_mmio + EDMA_CMD);
3527 hpriv->ops->phy_errata(hpriv, mmio, port_no);
3529 if (IS_GEN_I(hpriv))
3533 static void mv_pmp_select(struct ata_port *ap, int pmp)
3535 if (sata_pmp_supported(ap)) {
3536 void __iomem *port_mmio = mv_ap_base(ap);
3537 u32 reg = readl(port_mmio + SATA_IFCTL);
3538 int old = reg & 0xf;
3541 reg = (reg & ~0xf) | pmp;
3542 writelfl(reg, port_mmio + SATA_IFCTL);
3547 static int mv_pmp_hardreset(struct ata_link *link, unsigned int *class,
3548 unsigned long deadline)
3550 mv_pmp_select(link->ap, sata_srst_pmp(link));
3551 return sata_std_hardreset(link, class, deadline);
3554 static int mv_softreset(struct ata_link *link, unsigned int *class,
3555 unsigned long deadline)
3557 mv_pmp_select(link->ap, sata_srst_pmp(link));
3558 return ata_sff_softreset(link, class, deadline);
3561 static int mv_hardreset(struct ata_link *link, unsigned int *class,
3562 unsigned long deadline)
3564 struct ata_port *ap = link->ap;
3565 struct mv_host_priv *hpriv = ap->host->private_data;
3566 struct mv_port_priv *pp = ap->private_data;
3567 void __iomem *mmio = hpriv->base;
3568 int rc, attempts = 0, extra = 0;
3572 mv_reset_channel(hpriv, mmio, ap->port_no);
3573 pp->pp_flags &= ~MV_PP_FLAG_EDMA_EN;
3575 ~(MV_PP_FLAG_FBS_EN | MV_PP_FLAG_NCQ_EN | MV_PP_FLAG_FAKE_ATA_BUSY);
3577 /* Workaround for errata FEr SATA#10 (part 2) */
3579 const unsigned long *timing =
3580 sata_ehc_deb_timing(&link->eh_context);
3582 rc = sata_link_hardreset(link, timing, deadline + extra,
3584 rc = online ? -EAGAIN : rc;
3587 sata_scr_read(link, SCR_STATUS, &sstatus);
3588 if (!IS_GEN_I(hpriv) && ++attempts >= 5 && sstatus == 0x121) {
3589 /* Force 1.5gb/s link speed and try again */
3590 mv_setup_ifcfg(mv_ap_base(ap), 0);
3591 if (time_after(jiffies + HZ, deadline))
3592 extra = HZ; /* only extend it once, max */
3594 } while (sstatus != 0x0 && sstatus != 0x113 && sstatus != 0x123);
3595 mv_save_cached_regs(ap);
3596 mv_edma_cfg(ap, 0, 0);
3601 static void mv_eh_freeze(struct ata_port *ap)
3604 mv_enable_port_irqs(ap, 0);
3607 static void mv_eh_thaw(struct ata_port *ap)
3609 struct mv_host_priv *hpriv = ap->host->private_data;
3610 unsigned int port = ap->port_no;
3611 unsigned int hardport = mv_hardport_from_port(port);
3612 void __iomem *hc_mmio = mv_hc_base_from_port(hpriv->base, port);
3613 void __iomem *port_mmio = mv_ap_base(ap);
3616 /* clear EDMA errors on this port */
3617 writel(0, port_mmio + EDMA_ERR_IRQ_CAUSE);
3619 /* clear pending irq events */
3620 hc_irq_cause = ~((DEV_IRQ | DMA_IRQ) << hardport);
3621 writelfl(hc_irq_cause, hc_mmio + HC_IRQ_CAUSE);
3623 mv_enable_port_irqs(ap, ERR_IRQ);
3627 * mv_port_init - Perform some early initialization on a single port.
3628 * @port: libata data structure storing shadow register addresses
3629 * @port_mmio: base address of the port
3631 * Initialize shadow register mmio addresses, clear outstanding
3632 * interrupts on the port, and unmask interrupts for the future
3633 * start of the port.
3636 * Inherited from caller.
3638 static void mv_port_init(struct ata_ioports *port, void __iomem *port_mmio)
3640 void __iomem *serr, *shd_base = port_mmio + SHD_BLK;
3642 /* PIO related setup
3644 port->data_addr = shd_base + (sizeof(u32) * ATA_REG_DATA);
3646 port->feature_addr = shd_base + (sizeof(u32) * ATA_REG_ERR);
3647 port->nsect_addr = shd_base + (sizeof(u32) * ATA_REG_NSECT);
3648 port->lbal_addr = shd_base + (sizeof(u32) * ATA_REG_LBAL);
3649 port->lbam_addr = shd_base + (sizeof(u32) * ATA_REG_LBAM);
3650 port->lbah_addr = shd_base + (sizeof(u32) * ATA_REG_LBAH);
3651 port->device_addr = shd_base + (sizeof(u32) * ATA_REG_DEVICE);
3653 port->command_addr = shd_base + (sizeof(u32) * ATA_REG_STATUS);
3654 /* special case: control/altstatus doesn't have ATA_REG_ address */
3655 port->altstatus_addr = port->ctl_addr = shd_base + SHD_CTL_AST;
3658 port->cmd_addr = port->bmdma_addr = port->scr_addr = NULL;
3660 /* Clear any currently outstanding port interrupt conditions */
3661 serr = port_mmio + mv_scr_offset(SCR_ERROR);
3662 writelfl(readl(serr), serr);
3663 writelfl(0, port_mmio + EDMA_ERR_IRQ_CAUSE);
3665 /* unmask all non-transient EDMA error interrupts */
3666 writelfl(~EDMA_ERR_IRQ_TRANSIENT, port_mmio + EDMA_ERR_IRQ_MASK);
3668 VPRINTK("EDMA cfg=0x%08x EDMA IRQ err cause/mask=0x%08x/0x%08x\n",
3669 readl(port_mmio + EDMA_CFG),
3670 readl(port_mmio + EDMA_ERR_IRQ_CAUSE),
3671 readl(port_mmio + EDMA_ERR_IRQ_MASK));
3674 static unsigned int mv_in_pcix_mode(struct ata_host *host)
3676 struct mv_host_priv *hpriv = host->private_data;
3677 void __iomem *mmio = hpriv->base;
3680 if (IS_SOC(hpriv) || !IS_PCIE(hpriv))
3681 return 0; /* not PCI-X capable */
3682 reg = readl(mmio + MV_PCI_MODE);
3683 if ((reg & MV_PCI_MODE_MASK) == 0)
3684 return 0; /* conventional PCI mode */
3685 return 1; /* chip is in PCI-X mode */
3688 static int mv_pci_cut_through_okay(struct ata_host *host)
3690 struct mv_host_priv *hpriv = host->private_data;
3691 void __iomem *mmio = hpriv->base;
3694 if (!mv_in_pcix_mode(host)) {
3695 reg = readl(mmio + MV_PCI_COMMAND);
3696 if (reg & MV_PCI_COMMAND_MRDTRIG)
3697 return 0; /* not okay */
3699 return 1; /* okay */
3702 static void mv_60x1b2_errata_pci7(struct ata_host *host)
3704 struct mv_host_priv *hpriv = host->private_data;
3705 void __iomem *mmio = hpriv->base;
3707 /* workaround for 60x1-B2 errata PCI#7 */
3708 if (mv_in_pcix_mode(host)) {
3709 u32 reg = readl(mmio + MV_PCI_COMMAND);
3710 writelfl(reg & ~MV_PCI_COMMAND_MWRCOM, mmio + MV_PCI_COMMAND);
3714 static int mv_chip_id(struct ata_host *host, unsigned int board_idx)
3716 struct pci_dev *pdev = to_pci_dev(host->dev);
3717 struct mv_host_priv *hpriv = host->private_data;
3718 u32 hp_flags = hpriv->hp_flags;
3720 switch (board_idx) {
3722 hpriv->ops = &mv5xxx_ops;
3723 hp_flags |= MV_HP_GEN_I;
3725 switch (pdev->revision) {
3727 hp_flags |= MV_HP_ERRATA_50XXB0;
3730 hp_flags |= MV_HP_ERRATA_50XXB2;
3733 dev_printk(KERN_WARNING, &pdev->dev,
3734 "Applying 50XXB2 workarounds to unknown rev\n");
3735 hp_flags |= MV_HP_ERRATA_50XXB2;
3742 hpriv->ops = &mv5xxx_ops;
3743 hp_flags |= MV_HP_GEN_I;
3745 switch (pdev->revision) {
3747 hp_flags |= MV_HP_ERRATA_50XXB0;
3750 hp_flags |= MV_HP_ERRATA_50XXB2;
3753 dev_printk(KERN_WARNING, &pdev->dev,
3754 "Applying B2 workarounds to unknown rev\n");
3755 hp_flags |= MV_HP_ERRATA_50XXB2;
3762 hpriv->ops = &mv6xxx_ops;
3763 hp_flags |= MV_HP_GEN_II;
3765 switch (pdev->revision) {
3767 mv_60x1b2_errata_pci7(host);
3768 hp_flags |= MV_HP_ERRATA_60X1B2;
3771 hp_flags |= MV_HP_ERRATA_60X1C0;
3774 dev_printk(KERN_WARNING, &pdev->dev,
3775 "Applying B2 workarounds to unknown rev\n");
3776 hp_flags |= MV_HP_ERRATA_60X1B2;
3782 hp_flags |= MV_HP_PCIE | MV_HP_CUT_THROUGH;
3783 if (pdev->vendor == PCI_VENDOR_ID_TTI &&
3784 (pdev->device == 0x2300 || pdev->device == 0x2310))
3787 * Highpoint RocketRAID PCIe 23xx series cards:
3789 * Unconfigured drives are treated as "Legacy"
3790 * by the BIOS, and it overwrites sector 8 with
3791 * a "Lgcy" metadata block prior to Linux boot.
3793 * Configured drives (RAID or JBOD) leave sector 8
3794 * alone, but instead overwrite a high numbered
3795 * sector for the RAID metadata. This sector can
3796 * be determined exactly, by truncating the physical
3797 * drive capacity to a nice even GB value.
3799 * RAID metadata is at: (dev->n_sectors & ~0xfffff)
3801 * Warn the user, lest they think we're just buggy.
3803 printk(KERN_WARNING DRV_NAME ": Highpoint RocketRAID"
3804 " BIOS CORRUPTS DATA on all attached drives,"
3805 " regardless of if/how they are configured."
3807 printk(KERN_WARNING DRV_NAME ": For data safety, do not"
3808 " use sectors 8-9 on \"Legacy\" drives,"
3809 " and avoid the final two gigabytes on"
3810 " all RocketRAID BIOS initialized drives.\n");
3814 hpriv->ops = &mv6xxx_ops;
3815 hp_flags |= MV_HP_GEN_IIE;
3816 if (board_idx == chip_6042 && mv_pci_cut_through_okay(host))
3817 hp_flags |= MV_HP_CUT_THROUGH;
3819 switch (pdev->revision) {
3820 case 0x2: /* Rev.B0: the first/only public release */
3821 hp_flags |= MV_HP_ERRATA_60X1C0;
3824 dev_printk(KERN_WARNING, &pdev->dev,
3825 "Applying 60X1C0 workarounds to unknown rev\n");
3826 hp_flags |= MV_HP_ERRATA_60X1C0;
3831 if (soc_is_65n(hpriv))
3832 hpriv->ops = &mv_soc_65n_ops;
3834 hpriv->ops = &mv_soc_ops;
3835 hp_flags |= MV_HP_FLAG_SOC | MV_HP_GEN_IIE |
3836 MV_HP_ERRATA_60X1C0;
3840 dev_printk(KERN_ERR, host->dev,
3841 "BUG: invalid board index %u\n", board_idx);
3845 hpriv->hp_flags = hp_flags;
3846 if (hp_flags & MV_HP_PCIE) {
3847 hpriv->irq_cause_offset = PCIE_IRQ_CAUSE;
3848 hpriv->irq_mask_offset = PCIE_IRQ_MASK;
3849 hpriv->unmask_all_irqs = PCIE_UNMASK_ALL_IRQS;
3851 hpriv->irq_cause_offset = PCI_IRQ_CAUSE;
3852 hpriv->irq_mask_offset = PCI_IRQ_MASK;
3853 hpriv->unmask_all_irqs = PCI_UNMASK_ALL_IRQS;
3860 * mv_init_host - Perform some early initialization of the host.
3861 * @host: ATA host to initialize
3862 * @board_idx: controller index
3864 * If possible, do an early global reset of the host. Then do
3865 * our port init and clear/unmask all/relevant host interrupts.
3868 * Inherited from caller.
3870 static int mv_init_host(struct ata_host *host, unsigned int board_idx)
3872 int rc = 0, n_hc, port, hc;
3873 struct mv_host_priv *hpriv = host->private_data;
3874 void __iomem *mmio = hpriv->base;
3876 rc = mv_chip_id(host, board_idx);
3880 if (IS_SOC(hpriv)) {
3881 hpriv->main_irq_cause_addr = mmio + SOC_HC_MAIN_IRQ_CAUSE;
3882 hpriv->main_irq_mask_addr = mmio + SOC_HC_MAIN_IRQ_MASK;
3884 hpriv->main_irq_cause_addr = mmio + PCI_HC_MAIN_IRQ_CAUSE;
3885 hpriv->main_irq_mask_addr = mmio + PCI_HC_MAIN_IRQ_MASK;
3888 /* initialize shadow irq mask with register's value */
3889 hpriv->main_irq_mask = readl(hpriv->main_irq_mask_addr);
3891 /* global interrupt mask: 0 == mask everything */
3892 mv_set_main_irq_mask(host, ~0, 0);
3894 n_hc = mv_get_hc_count(host->ports[0]->flags);
3896 for (port = 0; port < host->n_ports; port++)
3897 if (hpriv->ops->read_preamp)
3898 hpriv->ops->read_preamp(hpriv, port, mmio);
3900 rc = hpriv->ops->reset_hc(hpriv, mmio, n_hc);
3904 hpriv->ops->reset_flash(hpriv, mmio);
3905 hpriv->ops->reset_bus(host, mmio);
3906 hpriv->ops->enable_leds(hpriv, mmio);
3908 for (port = 0; port < host->n_ports; port++) {
3909 struct ata_port *ap = host->ports[port];
3910 void __iomem *port_mmio = mv_port_base(mmio, port);
3912 mv_port_init(&ap->ioaddr, port_mmio);
3915 for (hc = 0; hc < n_hc; hc++) {
3916 void __iomem *hc_mmio = mv_hc_base(mmio, hc);
3918 VPRINTK("HC%i: HC config=0x%08x HC IRQ cause "
3919 "(before clear)=0x%08x\n", hc,
3920 readl(hc_mmio + HC_CFG),
3921 readl(hc_mmio + HC_IRQ_CAUSE));
3923 /* Clear any currently outstanding hc interrupt conditions */
3924 writelfl(0, hc_mmio + HC_IRQ_CAUSE);
3927 if (!IS_SOC(hpriv)) {
3928 /* Clear any currently outstanding host interrupt conditions */
3929 writelfl(0, mmio + hpriv->irq_cause_offset);
3931 /* and unmask interrupt generation for host regs */
3932 writelfl(hpriv->unmask_all_irqs, mmio + hpriv->irq_mask_offset);
3936 * enable only global host interrupts for now.
3937 * The per-port interrupts get done later as ports are set up.
3939 mv_set_main_irq_mask(host, 0, PCI_ERR);
3940 mv_set_irq_coalescing(host, irq_coalescing_io_count,
3941 irq_coalescing_usecs);
3946 static int mv_create_dma_pools(struct mv_host_priv *hpriv, struct device *dev)
3948 hpriv->crqb_pool = dmam_pool_create("crqb_q", dev, MV_CRQB_Q_SZ,
3950 if (!hpriv->crqb_pool)
3953 hpriv->crpb_pool = dmam_pool_create("crpb_q", dev, MV_CRPB_Q_SZ,
3955 if (!hpriv->crpb_pool)
3958 hpriv->sg_tbl_pool = dmam_pool_create("sg_tbl", dev, MV_SG_TBL_SZ,
3960 if (!hpriv->sg_tbl_pool)
3966 static void mv_conf_mbus_windows(struct mv_host_priv *hpriv,
3967 struct mbus_dram_target_info *dram)
3971 for (i = 0; i < 4; i++) {
3972 writel(0, hpriv->base + WINDOW_CTRL(i));
3973 writel(0, hpriv->base + WINDOW_BASE(i));
3976 for (i = 0; i < dram->num_cs; i++) {
3977 struct mbus_dram_window *cs = dram->cs + i;
3979 writel(((cs->size - 1) & 0xffff0000) |
3980 (cs->mbus_attr << 8) |
3981 (dram->mbus_dram_target_id << 4) | 1,
3982 hpriv->base + WINDOW_CTRL(i));
3983 writel(cs->base, hpriv->base + WINDOW_BASE(i));
3988 * mv_platform_probe - handle a positive probe of an soc Marvell
3990 * @pdev: platform device found
3993 * Inherited from caller.
3995 static int mv_platform_probe(struct platform_device *pdev)
3997 static int printed_version;
3998 const struct mv_sata_platform_data *mv_platform_data;
3999 const struct ata_port_info *ppi[] =
4000 { &mv_port_info[chip_soc], NULL };
4001 struct ata_host *host;
4002 struct mv_host_priv *hpriv;
4003 struct resource *res;
4006 if (!printed_version++)
4007 dev_printk(KERN_INFO, &pdev->dev, "version " DRV_VERSION "\n");
4010 * Simple resource validation ..
4012 if (unlikely(pdev->num_resources != 2)) {
4013 dev_err(&pdev->dev, "invalid number of resources\n");
4018 * Get the register base first
4020 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
4025 mv_platform_data = pdev->dev.platform_data;
4026 n_ports = mv_platform_data->n_ports;
4028 host = ata_host_alloc_pinfo(&pdev->dev, ppi, n_ports);
4029 hpriv = devm_kzalloc(&pdev->dev, sizeof(*hpriv), GFP_KERNEL);
4031 if (!host || !hpriv)
4033 host->private_data = hpriv;
4034 hpriv->n_ports = n_ports;
4037 hpriv->base = devm_ioremap(&pdev->dev, res->start,
4038 resource_size(res));
4039 hpriv->base -= SATAHC0_REG_BASE;
4041 #if defined(CONFIG_HAVE_CLK)
4042 hpriv->clk = clk_get(&pdev->dev, NULL);
4043 if (IS_ERR(hpriv->clk))
4044 dev_notice(&pdev->dev, "cannot get clkdev\n");
4046 clk_enable(hpriv->clk);
4050 * (Re-)program MBUS remapping windows if we are asked to.
4052 if (mv_platform_data->dram != NULL)
4053 mv_conf_mbus_windows(hpriv, mv_platform_data->dram);
4055 rc = mv_create_dma_pools(hpriv, &pdev->dev);
4059 /* initialize adapter */
4060 rc = mv_init_host(host, chip_soc);
4064 dev_printk(KERN_INFO, &pdev->dev,
4065 "slots %u ports %d\n", (unsigned)MV_MAX_Q_DEPTH,
4068 return ata_host_activate(host, platform_get_irq(pdev, 0), mv_interrupt,
4069 IRQF_SHARED, &mv6_sht);
4071 #if defined(CONFIG_HAVE_CLK)
4072 if (!IS_ERR(hpriv->clk)) {
4073 clk_disable(hpriv->clk);
4074 clk_put(hpriv->clk);
4083 * mv_platform_remove - unplug a platform interface
4084 * @pdev: platform device
4086 * A platform bus SATA device has been unplugged. Perform the needed
4087 * cleanup. Also called on module unload for any active devices.
4089 static int __devexit mv_platform_remove(struct platform_device *pdev)
4091 struct device *dev = &pdev->dev;
4092 struct ata_host *host = dev_get_drvdata(dev);
4093 #if defined(CONFIG_HAVE_CLK)
4094 struct mv_host_priv *hpriv = host->private_data;
4096 ata_host_detach(host);
4098 #if defined(CONFIG_HAVE_CLK)
4099 if (!IS_ERR(hpriv->clk)) {
4100 clk_disable(hpriv->clk);
4101 clk_put(hpriv->clk);
4108 static int mv_platform_suspend(struct platform_device *pdev, pm_message_t state)
4110 struct ata_host *host = dev_get_drvdata(&pdev->dev);
4112 return ata_host_suspend(host, state);
4117 static int mv_platform_resume(struct platform_device *pdev)
4119 struct ata_host *host = dev_get_drvdata(&pdev->dev);
4123 struct mv_host_priv *hpriv = host->private_data;
4124 const struct mv_sata_platform_data *mv_platform_data = \
4125 pdev->dev.platform_data;
4127 * (Re-)program MBUS remapping windows if we are asked to.
4129 if (mv_platform_data->dram != NULL)
4130 mv_conf_mbus_windows(hpriv, mv_platform_data->dram);
4132 /* initialize adapter */
4133 ret = mv_init_host(host, chip_soc);
4135 printk(KERN_ERR DRV_NAME ": Error during HW init\n");
4138 ata_host_resume(host);
4144 #define mv_platform_suspend NULL
4145 #define mv_platform_resume NULL
4148 static struct platform_driver mv_platform_driver = {
4149 .probe = mv_platform_probe,
4150 .remove = __devexit_p(mv_platform_remove),
4151 .suspend = mv_platform_suspend,
4152 .resume = mv_platform_resume,
4155 .owner = THIS_MODULE,
4161 static int mv_pci_init_one(struct pci_dev *pdev,
4162 const struct pci_device_id *ent);
4165 static struct pci_driver mv_pci_driver = {
4167 .id_table = mv_pci_tbl,
4168 .probe = mv_pci_init_one,
4169 .remove = ata_pci_remove_one,
4172 /* move to PCI layer or libata core? */
4173 static int pci_go_64(struct pci_dev *pdev)
4177 if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) {
4178 rc = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
4180 rc = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
4182 dev_printk(KERN_ERR, &pdev->dev,
4183 "64-bit DMA enable failed\n");
4188 rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
4190 dev_printk(KERN_ERR, &pdev->dev,
4191 "32-bit DMA enable failed\n");
4194 rc = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
4196 dev_printk(KERN_ERR, &pdev->dev,
4197 "32-bit consistent DMA enable failed\n");
4206 * mv_print_info - Dump key info to kernel log for perusal.
4207 * @host: ATA host to print info about
4209 * FIXME: complete this.
4212 * Inherited from caller.
4214 static void mv_print_info(struct ata_host *host)
4216 struct pci_dev *pdev = to_pci_dev(host->dev);
4217 struct mv_host_priv *hpriv = host->private_data;
4219 const char *scc_s, *gen;
4221 /* Use this to determine the HW stepping of the chip so we know
4222 * what errata to workaround
4224 pci_read_config_byte(pdev, PCI_CLASS_DEVICE, &scc);
4227 else if (scc == 0x01)
4232 if (IS_GEN_I(hpriv))
4234 else if (IS_GEN_II(hpriv))
4236 else if (IS_GEN_IIE(hpriv))
4241 dev_printk(KERN_INFO, &pdev->dev,
4242 "Gen-%s %u slots %u ports %s mode IRQ via %s\n",
4243 gen, (unsigned)MV_MAX_Q_DEPTH, host->n_ports,
4244 scc_s, (MV_HP_FLAG_MSI & hpriv->hp_flags) ? "MSI" : "INTx");
4248 * mv_pci_init_one - handle a positive probe of a PCI Marvell host
4249 * @pdev: PCI device found
4250 * @ent: PCI device ID entry for the matched host
4253 * Inherited from caller.
4255 static int mv_pci_init_one(struct pci_dev *pdev,
4256 const struct pci_device_id *ent)
4258 static int printed_version;
4259 unsigned int board_idx = (unsigned int)ent->driver_data;
4260 const struct ata_port_info *ppi[] = { &mv_port_info[board_idx], NULL };
4261 struct ata_host *host;
4262 struct mv_host_priv *hpriv;
4263 int n_ports, port, rc;
4265 if (!printed_version++)
4266 dev_printk(KERN_INFO, &pdev->dev, "version " DRV_VERSION "\n");
4269 n_ports = mv_get_hc_count(ppi[0]->flags) * MV_PORTS_PER_HC;
4271 host = ata_host_alloc_pinfo(&pdev->dev, ppi, n_ports);
4272 hpriv = devm_kzalloc(&pdev->dev, sizeof(*hpriv), GFP_KERNEL);
4273 if (!host || !hpriv)
4275 host->private_data = hpriv;
4276 hpriv->n_ports = n_ports;
4278 /* acquire resources */
4279 rc = pcim_enable_device(pdev);
4283 rc = pcim_iomap_regions(pdev, 1 << MV_PRIMARY_BAR, DRV_NAME);
4285 pcim_pin_device(pdev);
4288 host->iomap = pcim_iomap_table(pdev);
4289 hpriv->base = host->iomap[MV_PRIMARY_BAR];
4291 rc = pci_go_64(pdev);
4295 rc = mv_create_dma_pools(hpriv, &pdev->dev);
4299 for (port = 0; port < host->n_ports; port++) {
4300 struct ata_port *ap = host->ports[port];
4301 void __iomem *port_mmio = mv_port_base(hpriv->base, port);
4302 unsigned int offset = port_mmio - hpriv->base;
4304 ata_port_pbar_desc(ap, MV_PRIMARY_BAR, -1, "mmio");
4305 ata_port_pbar_desc(ap, MV_PRIMARY_BAR, offset, "port");
4308 /* initialize adapter */
4309 rc = mv_init_host(host, board_idx);
4313 /* Enable message-switched interrupts, if requested */
4314 if (msi && pci_enable_msi(pdev) == 0)
4315 hpriv->hp_flags |= MV_HP_FLAG_MSI;
4317 mv_dump_pci_cfg(pdev, 0x68);
4318 mv_print_info(host);
4320 pci_set_master(pdev);
4321 pci_try_set_mwi(pdev);
4322 return ata_host_activate(host, pdev->irq, mv_interrupt, IRQF_SHARED,
4323 IS_GEN_I(hpriv) ? &mv5_sht : &mv6_sht);
4327 static int mv_platform_probe(struct platform_device *pdev);
4328 static int __devexit mv_platform_remove(struct platform_device *pdev);
4330 static int __init mv_init(void)
4334 rc = pci_register_driver(&mv_pci_driver);
4338 rc = platform_driver_register(&mv_platform_driver);
4342 pci_unregister_driver(&mv_pci_driver);
4347 static void __exit mv_exit(void)
4350 pci_unregister_driver(&mv_pci_driver);
4352 platform_driver_unregister(&mv_platform_driver);
4355 MODULE_AUTHOR("Brett Russ");
4356 MODULE_DESCRIPTION("SCSI low-level driver for Marvell SATA controllers");
4357 MODULE_LICENSE("GPL");
4358 MODULE_DEVICE_TABLE(pci, mv_pci_tbl);
4359 MODULE_VERSION(DRV_VERSION);
4360 MODULE_ALIAS("platform:" DRV_NAME);
4362 module_init(mv_init);
4363 module_exit(mv_exit);