2 * sata_mv.c - Marvell SATA support
4 * Copyright 2005: EMC Corporation, all rights reserved.
5 * Copyright 2005 Red Hat, Inc. All rights reserved.
7 * Please ALWAYS copy linux-ide@vger.kernel.org on emails.
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; version 2 of the License.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
24 #include <linux/kernel.h>
25 #include <linux/module.h>
26 #include <linux/pci.h>
27 #include <linux/init.h>
28 #include <linux/blkdev.h>
29 #include <linux/delay.h>
30 #include <linux/interrupt.h>
31 #include <linux/sched.h>
32 #include <linux/dma-mapping.h>
33 #include <linux/device.h>
34 #include <scsi/scsi_host.h>
35 #include <scsi/scsi_cmnd.h>
36 #include <linux/libata.h>
39 #define DRV_NAME "sata_mv"
40 #define DRV_VERSION "0.7"
43 /* BAR's are enumerated in terms of pci_resource_start() terms */
44 MV_PRIMARY_BAR = 0, /* offset 0x10: memory space */
45 MV_IO_BAR = 2, /* offset 0x18: IO space */
46 MV_MISC_BAR = 3, /* offset 0x1c: FLASH, NVRAM, SRAM */
48 MV_MAJOR_REG_AREA_SZ = 0x10000, /* 64KB */
49 MV_MINOR_REG_AREA_SZ = 0x2000, /* 8KB */
52 MV_IRQ_COAL_REG_BASE = 0x18000, /* 6xxx part only */
53 MV_IRQ_COAL_CAUSE = (MV_IRQ_COAL_REG_BASE + 0x08),
54 MV_IRQ_COAL_CAUSE_LO = (MV_IRQ_COAL_REG_BASE + 0x88),
55 MV_IRQ_COAL_CAUSE_HI = (MV_IRQ_COAL_REG_BASE + 0x8c),
56 MV_IRQ_COAL_THRESHOLD = (MV_IRQ_COAL_REG_BASE + 0xcc),
57 MV_IRQ_COAL_TIME_THRESHOLD = (MV_IRQ_COAL_REG_BASE + 0xd0),
59 MV_SATAHC0_REG_BASE = 0x20000,
60 MV_FLASH_CTL = 0x1046c,
61 MV_GPIO_PORT_CTL = 0x104f0,
62 MV_RESET_CFG = 0x180d8,
64 MV_PCI_REG_SZ = MV_MAJOR_REG_AREA_SZ,
65 MV_SATAHC_REG_SZ = MV_MAJOR_REG_AREA_SZ,
66 MV_SATAHC_ARBTR_REG_SZ = MV_MINOR_REG_AREA_SZ, /* arbiter */
67 MV_PORT_REG_SZ = MV_MINOR_REG_AREA_SZ,
69 MV_USE_Q_DEPTH = ATA_DEF_QUEUE,
72 MV_MAX_Q_DEPTH_MASK = MV_MAX_Q_DEPTH - 1,
74 /* CRQB needs alignment on a 1KB boundary. Size == 1KB
75 * CRPB needs alignment on a 256B boundary. Size == 256B
76 * SG count of 176 leads to MV_PORT_PRIV_DMA_SZ == 4KB
77 * ePRD (SG) entries need alignment on a 16B boundary. Size == 16B
79 MV_CRQB_Q_SZ = (32 * MV_MAX_Q_DEPTH),
80 MV_CRPB_Q_SZ = (8 * MV_MAX_Q_DEPTH),
82 MV_SG_TBL_SZ = (16 * MV_MAX_SG_CT),
83 MV_PORT_PRIV_DMA_SZ = (MV_CRQB_Q_SZ + MV_CRPB_Q_SZ + MV_SG_TBL_SZ),
86 /* == (port / MV_PORTS_PER_HC) to determine HC from 0-7 port */
88 /* == (port % MV_PORTS_PER_HC) to determine hard port from 0-7 port */
92 MV_FLAG_DUAL_HC = (1 << 30), /* two SATA Host Controllers */
93 MV_FLAG_IRQ_COALESCE = (1 << 29), /* IRQ coalescing capability */
94 MV_COMMON_FLAGS = (ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
95 ATA_FLAG_SATA_RESET | ATA_FLAG_MMIO |
97 MV_6XXX_FLAGS = MV_FLAG_IRQ_COALESCE,
99 CRQB_FLAG_READ = (1 << 0),
101 CRQB_CMD_ADDR_SHIFT = 8,
102 CRQB_CMD_CS = (0x2 << 11),
103 CRQB_CMD_LAST = (1 << 15),
105 CRPB_FLAG_STATUS_SHIFT = 8,
107 EPRD_FLAG_END_OF_TBL = (1 << 31),
109 /* PCI interface registers */
111 PCI_COMMAND_OFS = 0xc00,
113 PCI_MAIN_CMD_STS_OFS = 0xd30,
114 STOP_PCI_MASTER = (1 << 2),
115 PCI_MASTER_EMPTY = (1 << 3),
116 GLOB_SFT_RST = (1 << 4),
119 MV_PCI_EXP_ROM_BAR_CTL = 0xd2c,
120 MV_PCI_DISC_TIMER = 0xd04,
121 MV_PCI_MSI_TRIGGER = 0xc38,
122 MV_PCI_SERR_MASK = 0xc28,
123 MV_PCI_XBAR_TMOUT = 0x1d04,
124 MV_PCI_ERR_LOW_ADDRESS = 0x1d40,
125 MV_PCI_ERR_HIGH_ADDRESS = 0x1d44,
126 MV_PCI_ERR_ATTRIBUTE = 0x1d48,
127 MV_PCI_ERR_COMMAND = 0x1d50,
129 PCI_IRQ_CAUSE_OFS = 0x1d58,
130 PCI_IRQ_MASK_OFS = 0x1d5c,
131 PCI_UNMASK_ALL_IRQS = 0x7fffff, /* bits 22-0 */
133 HC_MAIN_IRQ_CAUSE_OFS = 0x1d60,
134 HC_MAIN_IRQ_MASK_OFS = 0x1d64,
135 PORT0_ERR = (1 << 0), /* shift by port # */
136 PORT0_DONE = (1 << 1), /* shift by port # */
137 HC0_IRQ_PEND = 0x1ff, /* bits 0-8 = HC0's ports */
138 HC_SHIFT = 9, /* bits 9-17 = HC1's ports */
140 TRAN_LO_DONE = (1 << 19), /* 6xxx: IRQ coalescing */
141 TRAN_HI_DONE = (1 << 20), /* 6xxx: IRQ coalescing */
142 PORTS_0_7_COAL_DONE = (1 << 21), /* 6xxx: IRQ coalescing */
143 GPIO_INT = (1 << 22),
144 SELF_INT = (1 << 23),
145 TWSI_INT = (1 << 24),
146 HC_MAIN_RSVD = (0x7f << 25), /* bits 31-25 */
147 HC_MAIN_MASKED_IRQS = (TRAN_LO_DONE | TRAN_HI_DONE |
148 PORTS_0_7_COAL_DONE | GPIO_INT | TWSI_INT |
151 /* SATAHC registers */
154 HC_IRQ_CAUSE_OFS = 0x14,
155 CRPB_DMA_DONE = (1 << 0), /* shift by port # */
156 HC_IRQ_COAL = (1 << 4), /* IRQ coalescing */
157 DEV_IRQ = (1 << 8), /* shift by port # */
159 /* Shadow block registers */
161 SHD_CTL_AST_OFS = 0x20, /* ofs from SHD_BLK_OFS */
164 SATA_STATUS_OFS = 0x300, /* ctrl, err regs follow status */
165 SATA_ACTIVE_OFS = 0x350,
172 SATA_INTERFACE_CTL = 0x050,
174 MV_M2_PREAMP_MASK = 0x7e0,
178 EDMA_CFG_Q_DEPTH = 0, /* queueing disabled */
179 EDMA_CFG_NCQ = (1 << 5),
180 EDMA_CFG_NCQ_GO_ON_ERR = (1 << 14), /* continue on error */
181 EDMA_CFG_RD_BRST_EXT = (1 << 11), /* read burst 512B */
182 EDMA_CFG_WR_BUFF_LEN = (1 << 13), /* write buffer 512B */
184 EDMA_ERR_IRQ_CAUSE_OFS = 0x8,
185 EDMA_ERR_IRQ_MASK_OFS = 0xc,
186 EDMA_ERR_D_PAR = (1 << 0),
187 EDMA_ERR_PRD_PAR = (1 << 1),
188 EDMA_ERR_DEV = (1 << 2),
189 EDMA_ERR_DEV_DCON = (1 << 3),
190 EDMA_ERR_DEV_CON = (1 << 4),
191 EDMA_ERR_SERR = (1 << 5),
192 EDMA_ERR_SELF_DIS = (1 << 7),
193 EDMA_ERR_BIST_ASYNC = (1 << 8),
194 EDMA_ERR_CRBQ_PAR = (1 << 9),
195 EDMA_ERR_CRPB_PAR = (1 << 10),
196 EDMA_ERR_INTRL_PAR = (1 << 11),
197 EDMA_ERR_IORDY = (1 << 12),
198 EDMA_ERR_LNK_CTRL_RX = (0xf << 13),
199 EDMA_ERR_LNK_CTRL_RX_2 = (1 << 15),
200 EDMA_ERR_LNK_DATA_RX = (0xf << 17),
201 EDMA_ERR_LNK_CTRL_TX = (0x1f << 21),
202 EDMA_ERR_LNK_DATA_TX = (0x1f << 26),
203 EDMA_ERR_TRANS_PROTO = (1 << 31),
204 EDMA_ERR_FATAL = (EDMA_ERR_D_PAR | EDMA_ERR_PRD_PAR |
205 EDMA_ERR_DEV_DCON | EDMA_ERR_CRBQ_PAR |
206 EDMA_ERR_CRPB_PAR | EDMA_ERR_INTRL_PAR |
207 EDMA_ERR_IORDY | EDMA_ERR_LNK_CTRL_RX_2 |
208 EDMA_ERR_LNK_DATA_RX |
209 EDMA_ERR_LNK_DATA_TX |
210 EDMA_ERR_TRANS_PROTO),
212 EDMA_REQ_Q_BASE_HI_OFS = 0x10,
213 EDMA_REQ_Q_IN_PTR_OFS = 0x14, /* also contains BASE_LO */
215 EDMA_REQ_Q_OUT_PTR_OFS = 0x18,
216 EDMA_REQ_Q_PTR_SHIFT = 5,
218 EDMA_RSP_Q_BASE_HI_OFS = 0x1c,
219 EDMA_RSP_Q_IN_PTR_OFS = 0x20,
220 EDMA_RSP_Q_OUT_PTR_OFS = 0x24, /* also contains BASE_LO */
221 EDMA_RSP_Q_PTR_SHIFT = 3,
228 EDMA_IORDY_TMOUT = 0x34,
231 /* Host private flags (hp_flags) */
232 MV_HP_FLAG_MSI = (1 << 0),
233 MV_HP_ERRATA_50XXB0 = (1 << 1),
234 MV_HP_ERRATA_50XXB2 = (1 << 2),
235 MV_HP_ERRATA_60X1B2 = (1 << 3),
236 MV_HP_ERRATA_60X1C0 = (1 << 4),
237 MV_HP_ERRATA_XX42A0 = (1 << 5),
238 MV_HP_50XX = (1 << 6),
239 MV_HP_GEN_IIE = (1 << 7),
241 /* Port private flags (pp_flags) */
242 MV_PP_FLAG_EDMA_EN = (1 << 0),
243 MV_PP_FLAG_EDMA_DS_ACT = (1 << 1),
246 #define IS_50XX(hpriv) ((hpriv)->hp_flags & MV_HP_50XX)
247 #define IS_60XX(hpriv) (((hpriv)->hp_flags & MV_HP_50XX) == 0)
248 #define IS_GEN_I(hpriv) IS_50XX(hpriv)
249 #define IS_GEN_II(hpriv) IS_60XX(hpriv)
250 #define IS_GEN_IIE(hpriv) ((hpriv)->hp_flags & MV_HP_GEN_IIE)
253 /* Our DMA boundary is determined by an ePRD being unable to handle
254 * anything larger than 64KB
256 MV_DMA_BOUNDARY = 0xffffU,
258 EDMA_REQ_Q_BASE_LO_MASK = 0xfffffc00U,
260 EDMA_RSP_Q_BASE_LO_MASK = 0xffffff00U,
273 /* Command ReQuest Block: 32B */
289 /* Command ResPonse Block: 8B */
296 /* EDMA Physical Region Descriptor (ePRD); A.K.A. SG */
304 struct mv_port_priv {
305 struct mv_crqb *crqb;
307 struct mv_crpb *crpb;
309 struct mv_sg *sg_tbl;
310 dma_addr_t sg_tbl_dma;
314 struct mv_port_signal {
321 void (*phy_errata)(struct mv_host_priv *hpriv, void __iomem *mmio,
323 void (*enable_leds)(struct mv_host_priv *hpriv, void __iomem *mmio);
324 void (*read_preamp)(struct mv_host_priv *hpriv, int idx,
326 int (*reset_hc)(struct mv_host_priv *hpriv, void __iomem *mmio,
328 void (*reset_flash)(struct mv_host_priv *hpriv, void __iomem *mmio);
329 void (*reset_bus)(struct pci_dev *pdev, void __iomem *mmio);
332 struct mv_host_priv {
334 struct mv_port_signal signal[8];
335 const struct mv_hw_ops *ops;
338 static void mv_irq_clear(struct ata_port *ap);
339 static u32 mv_scr_read(struct ata_port *ap, unsigned int sc_reg_in);
340 static void mv_scr_write(struct ata_port *ap, unsigned int sc_reg_in, u32 val);
341 static u32 mv5_scr_read(struct ata_port *ap, unsigned int sc_reg_in);
342 static void mv5_scr_write(struct ata_port *ap, unsigned int sc_reg_in, u32 val);
343 static void mv_phy_reset(struct ata_port *ap);
344 static void __mv_phy_reset(struct ata_port *ap, int can_sleep);
345 static void mv_host_stop(struct ata_host_set *host_set);
346 static int mv_port_start(struct ata_port *ap);
347 static void mv_port_stop(struct ata_port *ap);
348 static void mv_qc_prep(struct ata_queued_cmd *qc);
349 static void mv_qc_prep_iie(struct ata_queued_cmd *qc);
350 static unsigned int mv_qc_issue(struct ata_queued_cmd *qc);
351 static irqreturn_t mv_interrupt(int irq, void *dev_instance,
352 struct pt_regs *regs);
353 static void mv_eng_timeout(struct ata_port *ap);
354 static int mv_init_one(struct pci_dev *pdev, const struct pci_device_id *ent);
356 static void mv5_phy_errata(struct mv_host_priv *hpriv, void __iomem *mmio,
358 static void mv5_enable_leds(struct mv_host_priv *hpriv, void __iomem *mmio);
359 static void mv5_read_preamp(struct mv_host_priv *hpriv, int idx,
361 static int mv5_reset_hc(struct mv_host_priv *hpriv, void __iomem *mmio,
363 static void mv5_reset_flash(struct mv_host_priv *hpriv, void __iomem *mmio);
364 static void mv5_reset_bus(struct pci_dev *pdev, void __iomem *mmio);
366 static void mv6_phy_errata(struct mv_host_priv *hpriv, void __iomem *mmio,
368 static void mv6_enable_leds(struct mv_host_priv *hpriv, void __iomem *mmio);
369 static void mv6_read_preamp(struct mv_host_priv *hpriv, int idx,
371 static int mv6_reset_hc(struct mv_host_priv *hpriv, void __iomem *mmio,
373 static void mv6_reset_flash(struct mv_host_priv *hpriv, void __iomem *mmio);
374 static void mv_reset_pci_bus(struct pci_dev *pdev, void __iomem *mmio);
375 static void mv_channel_reset(struct mv_host_priv *hpriv, void __iomem *mmio,
376 unsigned int port_no);
377 static void mv_stop_and_reset(struct ata_port *ap);
379 static struct scsi_host_template mv_sht = {
380 .module = THIS_MODULE,
382 .ioctl = ata_scsi_ioctl,
383 .queuecommand = ata_scsi_queuecmd,
384 .can_queue = MV_USE_Q_DEPTH,
385 .this_id = ATA_SHT_THIS_ID,
386 .sg_tablesize = MV_MAX_SG_CT / 2,
387 .cmd_per_lun = ATA_SHT_CMD_PER_LUN,
388 .emulated = ATA_SHT_EMULATED,
389 .use_clustering = ATA_SHT_USE_CLUSTERING,
390 .proc_name = DRV_NAME,
391 .dma_boundary = MV_DMA_BOUNDARY,
392 .slave_configure = ata_scsi_slave_config,
393 .bios_param = ata_std_bios_param,
396 static const struct ata_port_operations mv5_ops = {
397 .port_disable = ata_port_disable,
399 .tf_load = ata_tf_load,
400 .tf_read = ata_tf_read,
401 .check_status = ata_check_status,
402 .exec_command = ata_exec_command,
403 .dev_select = ata_std_dev_select,
405 .phy_reset = mv_phy_reset,
407 .qc_prep = mv_qc_prep,
408 .qc_issue = mv_qc_issue,
410 .eng_timeout = mv_eng_timeout,
412 .irq_handler = mv_interrupt,
413 .irq_clear = mv_irq_clear,
415 .scr_read = mv5_scr_read,
416 .scr_write = mv5_scr_write,
418 .port_start = mv_port_start,
419 .port_stop = mv_port_stop,
420 .host_stop = mv_host_stop,
423 static const struct ata_port_operations mv6_ops = {
424 .port_disable = ata_port_disable,
426 .tf_load = ata_tf_load,
427 .tf_read = ata_tf_read,
428 .check_status = ata_check_status,
429 .exec_command = ata_exec_command,
430 .dev_select = ata_std_dev_select,
432 .phy_reset = mv_phy_reset,
434 .qc_prep = mv_qc_prep,
435 .qc_issue = mv_qc_issue,
437 .eng_timeout = mv_eng_timeout,
439 .irq_handler = mv_interrupt,
440 .irq_clear = mv_irq_clear,
442 .scr_read = mv_scr_read,
443 .scr_write = mv_scr_write,
445 .port_start = mv_port_start,
446 .port_stop = mv_port_stop,
447 .host_stop = mv_host_stop,
450 static const struct ata_port_operations mv_iie_ops = {
451 .port_disable = ata_port_disable,
453 .tf_load = ata_tf_load,
454 .tf_read = ata_tf_read,
455 .check_status = ata_check_status,
456 .exec_command = ata_exec_command,
457 .dev_select = ata_std_dev_select,
459 .phy_reset = mv_phy_reset,
461 .qc_prep = mv_qc_prep_iie,
462 .qc_issue = mv_qc_issue,
464 .eng_timeout = mv_eng_timeout,
466 .irq_handler = mv_interrupt,
467 .irq_clear = mv_irq_clear,
469 .scr_read = mv_scr_read,
470 .scr_write = mv_scr_write,
472 .port_start = mv_port_start,
473 .port_stop = mv_port_stop,
474 .host_stop = mv_host_stop,
477 static const struct ata_port_info mv_port_info[] = {
480 .host_flags = MV_COMMON_FLAGS,
481 .pio_mask = 0x1f, /* pio0-4 */
482 .udma_mask = 0x7f, /* udma0-6 */
483 .port_ops = &mv5_ops,
487 .host_flags = (MV_COMMON_FLAGS | MV_FLAG_DUAL_HC),
488 .pio_mask = 0x1f, /* pio0-4 */
489 .udma_mask = 0x7f, /* udma0-6 */
490 .port_ops = &mv5_ops,
494 .host_flags = (MV_COMMON_FLAGS | MV_FLAG_DUAL_HC),
495 .pio_mask = 0x1f, /* pio0-4 */
496 .udma_mask = 0x7f, /* udma0-6 */
497 .port_ops = &mv5_ops,
501 .host_flags = (MV_COMMON_FLAGS | MV_6XXX_FLAGS),
502 .pio_mask = 0x1f, /* pio0-4 */
503 .udma_mask = 0x7f, /* udma0-6 */
504 .port_ops = &mv6_ops,
508 .host_flags = (MV_COMMON_FLAGS | MV_6XXX_FLAGS |
510 .pio_mask = 0x1f, /* pio0-4 */
511 .udma_mask = 0x7f, /* udma0-6 */
512 .port_ops = &mv6_ops,
516 .host_flags = (MV_COMMON_FLAGS | MV_6XXX_FLAGS),
517 .pio_mask = 0x1f, /* pio0-4 */
518 .udma_mask = 0x7f, /* udma0-6 */
519 .port_ops = &mv_iie_ops,
523 .host_flags = (MV_COMMON_FLAGS | MV_6XXX_FLAGS |
525 .pio_mask = 0x1f, /* pio0-4 */
526 .udma_mask = 0x7f, /* udma0-6 */
527 .port_ops = &mv_iie_ops,
531 static const struct pci_device_id mv_pci_tbl[] = {
532 {PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x5040), 0, 0, chip_504x},
533 {PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x5041), 0, 0, chip_504x},
534 {PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x5080), 0, 0, chip_5080},
535 {PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x5081), 0, 0, chip_508x},
537 {PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x6040), 0, 0, chip_604x},
538 {PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x6041), 0, 0, chip_604x},
539 {PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x6042), 0, 0, chip_6042},
540 {PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x6080), 0, 0, chip_608x},
541 {PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x6081), 0, 0, chip_608x},
543 {PCI_DEVICE(PCI_VENDOR_ID_ADAPTEC2, 0x0241), 0, 0, chip_604x},
544 {} /* terminate list */
547 static struct pci_driver mv_pci_driver = {
549 .id_table = mv_pci_tbl,
550 .probe = mv_init_one,
551 .remove = ata_pci_remove_one,
554 static const struct mv_hw_ops mv5xxx_ops = {
555 .phy_errata = mv5_phy_errata,
556 .enable_leds = mv5_enable_leds,
557 .read_preamp = mv5_read_preamp,
558 .reset_hc = mv5_reset_hc,
559 .reset_flash = mv5_reset_flash,
560 .reset_bus = mv5_reset_bus,
563 static const struct mv_hw_ops mv6xxx_ops = {
564 .phy_errata = mv6_phy_errata,
565 .enable_leds = mv6_enable_leds,
566 .read_preamp = mv6_read_preamp,
567 .reset_hc = mv6_reset_hc,
568 .reset_flash = mv6_reset_flash,
569 .reset_bus = mv_reset_pci_bus,
575 static int msi; /* Use PCI msi; either zero (off, default) or non-zero */
582 static inline void writelfl(unsigned long data, void __iomem *addr)
585 (void) readl(addr); /* flush to avoid PCI posted write */
588 static inline void __iomem *mv_hc_base(void __iomem *base, unsigned int hc)
590 return (base + MV_SATAHC0_REG_BASE + (hc * MV_SATAHC_REG_SZ));
593 static inline unsigned int mv_hc_from_port(unsigned int port)
595 return port >> MV_PORT_HC_SHIFT;
598 static inline unsigned int mv_hardport_from_port(unsigned int port)
600 return port & MV_PORT_MASK;
603 static inline void __iomem *mv_hc_base_from_port(void __iomem *base,
606 return mv_hc_base(base, mv_hc_from_port(port));
609 static inline void __iomem *mv_port_base(void __iomem *base, unsigned int port)
611 return mv_hc_base_from_port(base, port) +
612 MV_SATAHC_ARBTR_REG_SZ +
613 (mv_hardport_from_port(port) * MV_PORT_REG_SZ);
616 static inline void __iomem *mv_ap_base(struct ata_port *ap)
618 return mv_port_base(ap->host_set->mmio_base, ap->port_no);
621 static inline int mv_get_hc_count(unsigned long host_flags)
623 return ((host_flags & MV_FLAG_DUAL_HC) ? 2 : 1);
626 static void mv_irq_clear(struct ata_port *ap)
631 * mv_start_dma - Enable eDMA engine
632 * @base: port base address
633 * @pp: port private data
635 * Verify the local cache of the eDMA state is accurate with a
639 * Inherited from caller.
641 static void mv_start_dma(void __iomem *base, struct mv_port_priv *pp)
643 if (!(MV_PP_FLAG_EDMA_EN & pp->pp_flags)) {
644 writelfl(EDMA_EN, base + EDMA_CMD_OFS);
645 pp->pp_flags |= MV_PP_FLAG_EDMA_EN;
647 WARN_ON(!(EDMA_EN & readl(base + EDMA_CMD_OFS)));
651 * mv_stop_dma - Disable eDMA engine
652 * @ap: ATA channel to manipulate
654 * Verify the local cache of the eDMA state is accurate with a
658 * Inherited from caller.
660 static void mv_stop_dma(struct ata_port *ap)
662 void __iomem *port_mmio = mv_ap_base(ap);
663 struct mv_port_priv *pp = ap->private_data;
667 if (MV_PP_FLAG_EDMA_EN & pp->pp_flags) {
668 /* Disable EDMA if active. The disable bit auto clears.
670 writelfl(EDMA_DS, port_mmio + EDMA_CMD_OFS);
671 pp->pp_flags &= ~MV_PP_FLAG_EDMA_EN;
673 WARN_ON(EDMA_EN & readl(port_mmio + EDMA_CMD_OFS));
676 /* now properly wait for the eDMA to stop */
677 for (i = 1000; i > 0; i--) {
678 reg = readl(port_mmio + EDMA_CMD_OFS);
679 if (!(EDMA_EN & reg)) {
686 printk(KERN_ERR "ata%u: Unable to stop eDMA\n", ap->id);
687 /* FIXME: Consider doing a reset here to recover */
692 static void mv_dump_mem(void __iomem *start, unsigned bytes)
695 for (b = 0; b < bytes; ) {
696 DPRINTK("%p: ", start + b);
697 for (w = 0; b < bytes && w < 4; w++) {
698 printk("%08x ",readl(start + b));
706 static void mv_dump_pci_cfg(struct pci_dev *pdev, unsigned bytes)
711 for (b = 0; b < bytes; ) {
712 DPRINTK("%02x: ", b);
713 for (w = 0; b < bytes && w < 4; w++) {
714 (void) pci_read_config_dword(pdev,b,&dw);
722 static void mv_dump_all_regs(void __iomem *mmio_base, int port,
723 struct pci_dev *pdev)
726 void __iomem *hc_base = mv_hc_base(mmio_base,
727 port >> MV_PORT_HC_SHIFT);
728 void __iomem *port_base;
729 int start_port, num_ports, p, start_hc, num_hcs, hc;
732 start_hc = start_port = 0;
733 num_ports = 8; /* shld be benign for 4 port devs */
736 start_hc = port >> MV_PORT_HC_SHIFT;
738 num_ports = num_hcs = 1;
740 DPRINTK("All registers for port(s) %u-%u:\n", start_port,
741 num_ports > 1 ? num_ports - 1 : start_port);
744 DPRINTK("PCI config space regs:\n");
745 mv_dump_pci_cfg(pdev, 0x68);
747 DPRINTK("PCI regs:\n");
748 mv_dump_mem(mmio_base+0xc00, 0x3c);
749 mv_dump_mem(mmio_base+0xd00, 0x34);
750 mv_dump_mem(mmio_base+0xf00, 0x4);
751 mv_dump_mem(mmio_base+0x1d00, 0x6c);
752 for (hc = start_hc; hc < start_hc + num_hcs; hc++) {
753 hc_base = mv_hc_base(mmio_base, hc);
754 DPRINTK("HC regs (HC %i):\n", hc);
755 mv_dump_mem(hc_base, 0x1c);
757 for (p = start_port; p < start_port + num_ports; p++) {
758 port_base = mv_port_base(mmio_base, p);
759 DPRINTK("EDMA regs (port %i):\n",p);
760 mv_dump_mem(port_base, 0x54);
761 DPRINTK("SATA regs (port %i):\n",p);
762 mv_dump_mem(port_base+0x300, 0x60);
767 static unsigned int mv_scr_offset(unsigned int sc_reg_in)
775 ofs = SATA_STATUS_OFS + (sc_reg_in * sizeof(u32));
778 ofs = SATA_ACTIVE_OFS; /* active is not with the others */
787 static u32 mv_scr_read(struct ata_port *ap, unsigned int sc_reg_in)
789 unsigned int ofs = mv_scr_offset(sc_reg_in);
791 if (0xffffffffU != ofs) {
792 return readl(mv_ap_base(ap) + ofs);
798 static void mv_scr_write(struct ata_port *ap, unsigned int sc_reg_in, u32 val)
800 unsigned int ofs = mv_scr_offset(sc_reg_in);
802 if (0xffffffffU != ofs) {
803 writelfl(val, mv_ap_base(ap) + ofs);
808 * mv_host_stop - Host specific cleanup/stop routine.
809 * @host_set: host data structure
811 * Disable ints, cleanup host memory, call general purpose
815 * Inherited from caller.
817 static void mv_host_stop(struct ata_host_set *host_set)
819 struct mv_host_priv *hpriv = host_set->private_data;
820 struct pci_dev *pdev = to_pci_dev(host_set->dev);
822 if (hpriv->hp_flags & MV_HP_FLAG_MSI) {
823 pci_disable_msi(pdev);
828 ata_host_stop(host_set);
831 static inline void mv_priv_free(struct mv_port_priv *pp, struct device *dev)
833 dma_free_coherent(dev, MV_PORT_PRIV_DMA_SZ, pp->crpb, pp->crpb_dma);
836 static void mv_edma_cfg(struct mv_host_priv *hpriv, void __iomem *port_mmio)
838 u32 cfg = readl(port_mmio + EDMA_CFG_OFS);
840 /* set up non-NCQ EDMA configuration */
841 cfg &= ~0x1f; /* clear queue depth */
842 cfg &= ~EDMA_CFG_NCQ; /* clear NCQ mode */
843 cfg &= ~(1 << 9); /* disable equeue */
846 cfg |= (1 << 8); /* enab config burst size mask */
848 else if (IS_GEN_II(hpriv))
849 cfg |= EDMA_CFG_RD_BRST_EXT | EDMA_CFG_WR_BUFF_LEN;
851 else if (IS_GEN_IIE(hpriv)) {
852 cfg |= (1 << 23); /* dis RX PM port mask */
853 cfg &= ~(1 << 16); /* dis FIS-based switching (for now) */
854 cfg &= ~(1 << 19); /* dis 128-entry queue (for now?) */
855 cfg |= (1 << 18); /* enab early completion */
856 cfg |= (1 << 17); /* enab host q cache */
857 cfg |= (1 << 22); /* enab cutthrough */
860 writelfl(cfg, port_mmio + EDMA_CFG_OFS);
864 * mv_port_start - Port specific init/start routine.
865 * @ap: ATA channel to manipulate
867 * Allocate and point to DMA memory, init port private memory,
871 * Inherited from caller.
873 static int mv_port_start(struct ata_port *ap)
875 struct device *dev = ap->host_set->dev;
876 struct mv_host_priv *hpriv = ap->host_set->private_data;
877 struct mv_port_priv *pp;
878 void __iomem *port_mmio = mv_ap_base(ap);
883 pp = kmalloc(sizeof(*pp), GFP_KERNEL);
886 memset(pp, 0, sizeof(*pp));
888 mem = dma_alloc_coherent(dev, MV_PORT_PRIV_DMA_SZ, &mem_dma,
892 memset(mem, 0, MV_PORT_PRIV_DMA_SZ);
894 rc = ata_pad_alloc(ap, dev);
898 /* First item in chunk of DMA memory:
899 * 32-slot command request table (CRQB), 32 bytes each in size
902 pp->crqb_dma = mem_dma;
904 mem_dma += MV_CRQB_Q_SZ;
907 * 32-slot command response table (CRPB), 8 bytes each in size
910 pp->crpb_dma = mem_dma;
912 mem_dma += MV_CRPB_Q_SZ;
915 * Table of scatter-gather descriptors (ePRD), 16 bytes each
918 pp->sg_tbl_dma = mem_dma;
920 mv_edma_cfg(hpriv, port_mmio);
922 writel((pp->crqb_dma >> 16) >> 16, port_mmio + EDMA_REQ_Q_BASE_HI_OFS);
923 writelfl(pp->crqb_dma & EDMA_REQ_Q_BASE_LO_MASK,
924 port_mmio + EDMA_REQ_Q_IN_PTR_OFS);
926 if (hpriv->hp_flags & MV_HP_ERRATA_XX42A0)
927 writelfl(pp->crqb_dma & 0xffffffff,
928 port_mmio + EDMA_REQ_Q_OUT_PTR_OFS);
930 writelfl(0, port_mmio + EDMA_REQ_Q_OUT_PTR_OFS);
932 writel((pp->crpb_dma >> 16) >> 16, port_mmio + EDMA_RSP_Q_BASE_HI_OFS);
934 if (hpriv->hp_flags & MV_HP_ERRATA_XX42A0)
935 writelfl(pp->crpb_dma & 0xffffffff,
936 port_mmio + EDMA_RSP_Q_IN_PTR_OFS);
938 writelfl(0, port_mmio + EDMA_RSP_Q_IN_PTR_OFS);
940 writelfl(pp->crpb_dma & EDMA_RSP_Q_BASE_LO_MASK,
941 port_mmio + EDMA_RSP_Q_OUT_PTR_OFS);
943 /* Don't turn on EDMA here...do it before DMA commands only. Else
944 * we'll be unable to send non-data, PIO, etc due to restricted access
947 ap->private_data = pp;
951 mv_priv_free(pp, dev);
959 * mv_port_stop - Port specific cleanup/stop routine.
960 * @ap: ATA channel to manipulate
962 * Stop DMA, cleanup port memory.
965 * This routine uses the host_set lock to protect the DMA stop.
967 static void mv_port_stop(struct ata_port *ap)
969 struct device *dev = ap->host_set->dev;
970 struct mv_port_priv *pp = ap->private_data;
973 spin_lock_irqsave(&ap->host_set->lock, flags);
975 spin_unlock_irqrestore(&ap->host_set->lock, flags);
977 ap->private_data = NULL;
978 ata_pad_free(ap, dev);
979 mv_priv_free(pp, dev);
984 * mv_fill_sg - Fill out the Marvell ePRD (scatter gather) entries
985 * @qc: queued command whose SG list to source from
987 * Populate the SG list and mark the last entry.
990 * Inherited from caller.
992 static void mv_fill_sg(struct ata_queued_cmd *qc)
994 struct mv_port_priv *pp = qc->ap->private_data;
996 struct scatterlist *sg;
998 ata_for_each_sg(sg, qc) {
1000 u32 sg_len, len, offset;
1002 addr = sg_dma_address(sg);
1003 sg_len = sg_dma_len(sg);
1006 offset = addr & MV_DMA_BOUNDARY;
1008 if ((offset + sg_len) > 0x10000)
1009 len = 0x10000 - offset;
1011 pp->sg_tbl[i].addr = cpu_to_le32(addr & 0xffffffff);
1012 pp->sg_tbl[i].addr_hi = cpu_to_le32((addr >> 16) >> 16);
1013 pp->sg_tbl[i].flags_size = cpu_to_le32(len & 0xffff);
1018 if (!sg_len && ata_sg_is_last(sg, qc))
1019 pp->sg_tbl[i].flags_size |= cpu_to_le32(EPRD_FLAG_END_OF_TBL);
1026 static inline unsigned mv_inc_q_index(unsigned index)
1028 return (index + 1) & MV_MAX_Q_DEPTH_MASK;
1031 static inline void mv_crqb_pack_cmd(u16 *cmdw, u8 data, u8 addr, unsigned last)
1033 u16 tmp = data | (addr << CRQB_CMD_ADDR_SHIFT) | CRQB_CMD_CS |
1034 (last ? CRQB_CMD_LAST : 0);
1035 *cmdw = cpu_to_le16(tmp);
1039 * mv_qc_prep - Host specific command preparation.
1040 * @qc: queued command to prepare
1042 * This routine simply redirects to the general purpose routine
1043 * if command is not DMA. Else, it handles prep of the CRQB
1044 * (command request block), does some sanity checking, and calls
1045 * the SG load routine.
1048 * Inherited from caller.
1050 static void mv_qc_prep(struct ata_queued_cmd *qc)
1052 struct ata_port *ap = qc->ap;
1053 struct mv_port_priv *pp = ap->private_data;
1055 struct ata_taskfile *tf;
1059 if (ATA_PROT_DMA != qc->tf.protocol)
1062 /* Fill in command request block
1064 if (!(qc->tf.flags & ATA_TFLAG_WRITE))
1065 flags |= CRQB_FLAG_READ;
1066 WARN_ON(MV_MAX_Q_DEPTH <= qc->tag);
1067 flags |= qc->tag << CRQB_TAG_SHIFT;
1069 /* get current queue index from hardware */
1070 in_index = (readl(mv_ap_base(ap) + EDMA_REQ_Q_IN_PTR_OFS)
1071 >> EDMA_REQ_Q_PTR_SHIFT) & MV_MAX_Q_DEPTH_MASK;
1073 pp->crqb[in_index].sg_addr =
1074 cpu_to_le32(pp->sg_tbl_dma & 0xffffffff);
1075 pp->crqb[in_index].sg_addr_hi =
1076 cpu_to_le32((pp->sg_tbl_dma >> 16) >> 16);
1077 pp->crqb[in_index].ctrl_flags = cpu_to_le16(flags);
1079 cw = &pp->crqb[in_index].ata_cmd[0];
1082 /* Sadly, the CRQB cannot accomodate all registers--there are
1083 * only 11 bytes...so we must pick and choose required
1084 * registers based on the command. So, we drop feature and
1085 * hob_feature for [RW] DMA commands, but they are needed for
1086 * NCQ. NCQ will drop hob_nsect.
1088 switch (tf->command) {
1090 case ATA_CMD_READ_EXT:
1092 case ATA_CMD_WRITE_EXT:
1093 case ATA_CMD_WRITE_FUA_EXT:
1094 mv_crqb_pack_cmd(cw++, tf->hob_nsect, ATA_REG_NSECT, 0);
1096 #ifdef LIBATA_NCQ /* FIXME: remove this line when NCQ added */
1097 case ATA_CMD_FPDMA_READ:
1098 case ATA_CMD_FPDMA_WRITE:
1099 mv_crqb_pack_cmd(cw++, tf->hob_feature, ATA_REG_FEATURE, 0);
1100 mv_crqb_pack_cmd(cw++, tf->feature, ATA_REG_FEATURE, 0);
1102 #endif /* FIXME: remove this line when NCQ added */
1104 /* The only other commands EDMA supports in non-queued and
1105 * non-NCQ mode are: [RW] STREAM DMA and W DMA FUA EXT, none
1106 * of which are defined/used by Linux. If we get here, this
1107 * driver needs work.
1109 * FIXME: modify libata to give qc_prep a return value and
1110 * return error here.
1112 BUG_ON(tf->command);
1115 mv_crqb_pack_cmd(cw++, tf->nsect, ATA_REG_NSECT, 0);
1116 mv_crqb_pack_cmd(cw++, tf->hob_lbal, ATA_REG_LBAL, 0);
1117 mv_crqb_pack_cmd(cw++, tf->lbal, ATA_REG_LBAL, 0);
1118 mv_crqb_pack_cmd(cw++, tf->hob_lbam, ATA_REG_LBAM, 0);
1119 mv_crqb_pack_cmd(cw++, tf->lbam, ATA_REG_LBAM, 0);
1120 mv_crqb_pack_cmd(cw++, tf->hob_lbah, ATA_REG_LBAH, 0);
1121 mv_crqb_pack_cmd(cw++, tf->lbah, ATA_REG_LBAH, 0);
1122 mv_crqb_pack_cmd(cw++, tf->device, ATA_REG_DEVICE, 0);
1123 mv_crqb_pack_cmd(cw++, tf->command, ATA_REG_CMD, 1); /* last */
1125 if (!(qc->flags & ATA_QCFLAG_DMAMAP))
1131 * mv_qc_prep_iie - Host specific command preparation.
1132 * @qc: queued command to prepare
1134 * This routine simply redirects to the general purpose routine
1135 * if command is not DMA. Else, it handles prep of the CRQB
1136 * (command request block), does some sanity checking, and calls
1137 * the SG load routine.
1140 * Inherited from caller.
1142 static void mv_qc_prep_iie(struct ata_queued_cmd *qc)
1144 struct ata_port *ap = qc->ap;
1145 struct mv_port_priv *pp = ap->private_data;
1146 struct mv_crqb_iie *crqb;
1147 struct ata_taskfile *tf;
1151 if (ATA_PROT_DMA != qc->tf.protocol)
1154 /* Fill in Gen IIE command request block
1156 if (!(qc->tf.flags & ATA_TFLAG_WRITE))
1157 flags |= CRQB_FLAG_READ;
1159 WARN_ON(MV_MAX_Q_DEPTH <= qc->tag);
1160 flags |= qc->tag << CRQB_TAG_SHIFT;
1162 /* get current queue index from hardware */
1163 in_index = (readl(mv_ap_base(ap) + EDMA_REQ_Q_IN_PTR_OFS)
1164 >> EDMA_REQ_Q_PTR_SHIFT) & MV_MAX_Q_DEPTH_MASK;
1166 crqb = (struct mv_crqb_iie *) &pp->crqb[in_index];
1167 crqb->addr = cpu_to_le32(pp->sg_tbl_dma & 0xffffffff);
1168 crqb->addr_hi = cpu_to_le32((pp->sg_tbl_dma >> 16) >> 16);
1169 crqb->flags = cpu_to_le32(flags);
1172 crqb->ata_cmd[0] = cpu_to_le32(
1173 (tf->command << 16) |
1176 crqb->ata_cmd[1] = cpu_to_le32(
1182 crqb->ata_cmd[2] = cpu_to_le32(
1183 (tf->hob_lbal << 0) |
1184 (tf->hob_lbam << 8) |
1185 (tf->hob_lbah << 16) |
1186 (tf->hob_feature << 24)
1188 crqb->ata_cmd[3] = cpu_to_le32(
1190 (tf->hob_nsect << 8)
1193 if (!(qc->flags & ATA_QCFLAG_DMAMAP))
1199 * mv_qc_issue - Initiate a command to the host
1200 * @qc: queued command to start
1202 * This routine simply redirects to the general purpose routine
1203 * if command is not DMA. Else, it sanity checks our local
1204 * caches of the request producer/consumer indices then enables
1205 * DMA and bumps the request producer index.
1208 * Inherited from caller.
1210 static unsigned int mv_qc_issue(struct ata_queued_cmd *qc)
1212 void __iomem *port_mmio = mv_ap_base(qc->ap);
1213 struct mv_port_priv *pp = qc->ap->private_data;
1217 if (ATA_PROT_DMA != qc->tf.protocol) {
1218 /* We're about to send a non-EDMA capable command to the
1219 * port. Turn off EDMA so there won't be problems accessing
1220 * shadow block, etc registers.
1222 mv_stop_dma(qc->ap);
1223 return ata_qc_issue_prot(qc);
1226 in_ptr = readl(port_mmio + EDMA_REQ_Q_IN_PTR_OFS);
1227 in_index = (in_ptr >> EDMA_REQ_Q_PTR_SHIFT) & MV_MAX_Q_DEPTH_MASK;
1229 /* until we do queuing, the queue should be empty at this point */
1230 WARN_ON(in_index != ((readl(port_mmio + EDMA_REQ_Q_OUT_PTR_OFS)
1231 >> EDMA_REQ_Q_PTR_SHIFT) & MV_MAX_Q_DEPTH_MASK));
1233 in_index = mv_inc_q_index(in_index); /* now incr producer index */
1235 mv_start_dma(port_mmio, pp);
1237 /* and write the request in pointer to kick the EDMA to life */
1238 in_ptr &= EDMA_REQ_Q_BASE_LO_MASK;
1239 in_ptr |= in_index << EDMA_REQ_Q_PTR_SHIFT;
1240 writelfl(in_ptr, port_mmio + EDMA_REQ_Q_IN_PTR_OFS);
1246 * mv_get_crpb_status - get status from most recently completed cmd
1247 * @ap: ATA channel to manipulate
1249 * This routine is for use when the port is in DMA mode, when it
1250 * will be using the CRPB (command response block) method of
1251 * returning command completion information. We check indices
1252 * are good, grab status, and bump the response consumer index to
1253 * prove that we're up to date.
1256 * Inherited from caller.
1258 static u8 mv_get_crpb_status(struct ata_port *ap)
1260 void __iomem *port_mmio = mv_ap_base(ap);
1261 struct mv_port_priv *pp = ap->private_data;
1266 out_ptr = readl(port_mmio + EDMA_RSP_Q_OUT_PTR_OFS);
1267 out_index = (out_ptr >> EDMA_RSP_Q_PTR_SHIFT) & MV_MAX_Q_DEPTH_MASK;
1269 ata_status = le16_to_cpu(pp->crpb[out_index].flags)
1270 >> CRPB_FLAG_STATUS_SHIFT;
1272 /* increment our consumer index... */
1273 out_index = mv_inc_q_index(out_index);
1275 /* and, until we do NCQ, there should only be 1 CRPB waiting */
1276 WARN_ON(out_index != ((readl(port_mmio + EDMA_RSP_Q_IN_PTR_OFS)
1277 >> EDMA_RSP_Q_PTR_SHIFT) & MV_MAX_Q_DEPTH_MASK));
1279 /* write out our inc'd consumer index so EDMA knows we're caught up */
1280 out_ptr &= EDMA_RSP_Q_BASE_LO_MASK;
1281 out_ptr |= out_index << EDMA_RSP_Q_PTR_SHIFT;
1282 writelfl(out_ptr, port_mmio + EDMA_RSP_Q_OUT_PTR_OFS);
1284 /* Return ATA status register for completed CRPB */
1289 * mv_err_intr - Handle error interrupts on the port
1290 * @ap: ATA channel to manipulate
1291 * @reset_allowed: bool: 0 == don't trigger from reset here
1293 * In most cases, just clear the interrupt and move on. However,
1294 * some cases require an eDMA reset, which is done right before
1295 * the COMRESET in mv_phy_reset(). The SERR case requires a
1296 * clear of pending errors in the SATA SERROR register. Finally,
1297 * if the port disabled DMA, update our cached copy to match.
1300 * Inherited from caller.
1302 static void mv_err_intr(struct ata_port *ap, int reset_allowed)
1304 void __iomem *port_mmio = mv_ap_base(ap);
1305 u32 edma_err_cause, serr = 0;
1307 edma_err_cause = readl(port_mmio + EDMA_ERR_IRQ_CAUSE_OFS);
1309 if (EDMA_ERR_SERR & edma_err_cause) {
1310 serr = scr_read(ap, SCR_ERROR);
1311 scr_write_flush(ap, SCR_ERROR, serr);
1313 if (EDMA_ERR_SELF_DIS & edma_err_cause) {
1314 struct mv_port_priv *pp = ap->private_data;
1315 pp->pp_flags &= ~MV_PP_FLAG_EDMA_EN;
1317 DPRINTK(KERN_ERR "ata%u: port error; EDMA err cause: 0x%08x "
1318 "SERR: 0x%08x\n", ap->id, edma_err_cause, serr);
1320 /* Clear EDMA now that SERR cleanup done */
1321 writelfl(0, port_mmio + EDMA_ERR_IRQ_CAUSE_OFS);
1323 /* check for fatal here and recover if needed */
1324 if (reset_allowed && (EDMA_ERR_FATAL & edma_err_cause))
1325 mv_stop_and_reset(ap);
1329 * mv_host_intr - Handle all interrupts on the given host controller
1330 * @host_set: host specific structure
1331 * @relevant: port error bits relevant to this host controller
1332 * @hc: which host controller we're to look at
1334 * Read then write clear the HC interrupt status then walk each
1335 * port connected to the HC and see if it needs servicing. Port
1336 * success ints are reported in the HC interrupt status reg, the
1337 * port error ints are reported in the higher level main
1338 * interrupt status register and thus are passed in via the
1339 * 'relevant' argument.
1342 * Inherited from caller.
1344 static void mv_host_intr(struct ata_host_set *host_set, u32 relevant,
1347 void __iomem *mmio = host_set->mmio_base;
1348 void __iomem *hc_mmio = mv_hc_base(mmio, hc);
1349 struct ata_queued_cmd *qc;
1351 int shift, port, port0, hard_port, handled;
1352 unsigned int err_mask;
1357 port0 = MV_PORTS_PER_HC;
1360 /* we'll need the HC success int register in most cases */
1361 hc_irq_cause = readl(hc_mmio + HC_IRQ_CAUSE_OFS);
1363 writelfl(~hc_irq_cause, hc_mmio + HC_IRQ_CAUSE_OFS);
1366 VPRINTK("ENTER, hc%u relevant=0x%08x HC IRQ cause=0x%08x\n",
1367 hc,relevant,hc_irq_cause);
1369 for (port = port0; port < port0 + MV_PORTS_PER_HC; port++) {
1371 struct ata_port *ap = host_set->ports[port];
1372 struct mv_port_priv *pp = ap->private_data;
1374 hard_port = mv_hardport_from_port(port); /* range 0..3 */
1375 handled = 0; /* ensure ata_status is set if handled++ */
1377 /* Note that DEV_IRQ might happen spuriously during EDMA,
1378 * and should be ignored in such cases.
1379 * The cause of this is still under investigation.
1381 if (pp->pp_flags & MV_PP_FLAG_EDMA_EN) {
1382 /* EDMA: check for response queue interrupt */
1383 if ((CRPB_DMA_DONE << hard_port) & hc_irq_cause) {
1384 ata_status = mv_get_crpb_status(ap);
1388 /* PIO: check for device (drive) interrupt */
1389 if ((DEV_IRQ << hard_port) & hc_irq_cause) {
1390 ata_status = readb((void __iomem *)
1391 ap->ioaddr.status_addr);
1393 /* ignore spurious intr if drive still BUSY */
1394 if (ata_status & ATA_BUSY) {
1401 if (ap->flags & (ATA_FLAG_PORT_DISABLED | ATA_FLAG_NOINTR))
1404 err_mask = ac_err_mask(ata_status);
1406 shift = port << 1; /* (port * 2) */
1407 if (port >= MV_PORTS_PER_HC) {
1408 shift++; /* skip bit 8 in the HC Main IRQ reg */
1410 if ((PORT0_ERR << shift) & relevant) {
1412 err_mask |= AC_ERR_OTHER;
1417 qc = ata_qc_from_tag(ap, ap->active_tag);
1418 if (qc && (qc->flags & ATA_QCFLAG_ACTIVE)) {
1419 VPRINTK("port %u IRQ found for qc, "
1420 "ata_status 0x%x\n", port,ata_status);
1421 /* mark qc status appropriately */
1422 if (!(qc->tf.ctl & ATA_NIEN)) {
1423 qc->err_mask |= err_mask;
1424 ata_qc_complete(qc);
1435 * @dev_instance: private data; in this case the host structure
1438 * Read the read only register to determine if any host
1439 * controllers have pending interrupts. If so, call lower level
1440 * routine to handle. Also check for PCI errors which are only
1444 * This routine holds the host_set lock while processing pending
1447 static irqreturn_t mv_interrupt(int irq, void *dev_instance,
1448 struct pt_regs *regs)
1450 struct ata_host_set *host_set = dev_instance;
1451 unsigned int hc, handled = 0, n_hcs;
1452 void __iomem *mmio = host_set->mmio_base;
1453 struct mv_host_priv *hpriv;
1456 irq_stat = readl(mmio + HC_MAIN_IRQ_CAUSE_OFS);
1458 /* check the cases where we either have nothing pending or have read
1459 * a bogus register value which can indicate HW removal or PCI fault
1461 if (!irq_stat || (0xffffffffU == irq_stat)) {
1465 n_hcs = mv_get_hc_count(host_set->ports[0]->flags);
1466 spin_lock(&host_set->lock);
1468 for (hc = 0; hc < n_hcs; hc++) {
1469 u32 relevant = irq_stat & (HC0_IRQ_PEND << (hc * HC_SHIFT));
1471 mv_host_intr(host_set, relevant, hc);
1476 hpriv = host_set->private_data;
1477 if (IS_60XX(hpriv)) {
1478 /* deal with the interrupt coalescing bits */
1479 if (irq_stat & (TRAN_LO_DONE | TRAN_HI_DONE | PORTS_0_7_COAL_DONE)) {
1480 writelfl(0, mmio + MV_IRQ_COAL_CAUSE_LO);
1481 writelfl(0, mmio + MV_IRQ_COAL_CAUSE_HI);
1482 writelfl(0, mmio + MV_IRQ_COAL_CAUSE);
1486 if (PCI_ERR & irq_stat) {
1487 printk(KERN_ERR DRV_NAME ": PCI ERROR; PCI IRQ cause=0x%08x\n",
1488 readl(mmio + PCI_IRQ_CAUSE_OFS));
1490 DPRINTK("All regs @ PCI error\n");
1491 mv_dump_all_regs(mmio, -1, to_pci_dev(host_set->dev));
1493 writelfl(0, mmio + PCI_IRQ_CAUSE_OFS);
1496 spin_unlock(&host_set->lock);
1498 return IRQ_RETVAL(handled);
1501 static void __iomem *mv5_phy_base(void __iomem *mmio, unsigned int port)
1503 void __iomem *hc_mmio = mv_hc_base_from_port(mmio, port);
1504 unsigned long ofs = (mv_hardport_from_port(port) + 1) * 0x100UL;
1506 return hc_mmio + ofs;
1509 static unsigned int mv5_scr_offset(unsigned int sc_reg_in)
1513 switch (sc_reg_in) {
1517 ofs = sc_reg_in * sizeof(u32);
1526 static u32 mv5_scr_read(struct ata_port *ap, unsigned int sc_reg_in)
1528 void __iomem *mmio = mv5_phy_base(ap->host_set->mmio_base, ap->port_no);
1529 unsigned int ofs = mv5_scr_offset(sc_reg_in);
1531 if (ofs != 0xffffffffU)
1532 return readl(mmio + ofs);
1537 static void mv5_scr_write(struct ata_port *ap, unsigned int sc_reg_in, u32 val)
1539 void __iomem *mmio = mv5_phy_base(ap->host_set->mmio_base, ap->port_no);
1540 unsigned int ofs = mv5_scr_offset(sc_reg_in);
1542 if (ofs != 0xffffffffU)
1543 writelfl(val, mmio + ofs);
1546 static void mv5_reset_bus(struct pci_dev *pdev, void __iomem *mmio)
1551 pci_read_config_byte(pdev, PCI_REVISION_ID, &rev_id);
1553 early_5080 = (pdev->device == 0x5080) && (rev_id == 0);
1556 u32 tmp = readl(mmio + MV_PCI_EXP_ROM_BAR_CTL);
1558 writel(tmp, mmio + MV_PCI_EXP_ROM_BAR_CTL);
1561 mv_reset_pci_bus(pdev, mmio);
1564 static void mv5_reset_flash(struct mv_host_priv *hpriv, void __iomem *mmio)
1566 writel(0x0fcfffff, mmio + MV_FLASH_CTL);
1569 static void mv5_read_preamp(struct mv_host_priv *hpriv, int idx,
1572 void __iomem *phy_mmio = mv5_phy_base(mmio, idx);
1575 tmp = readl(phy_mmio + MV5_PHY_MODE);
1577 hpriv->signal[idx].pre = tmp & 0x1800; /* bits 12:11 */
1578 hpriv->signal[idx].amps = tmp & 0xe0; /* bits 7:5 */
1581 static void mv5_enable_leds(struct mv_host_priv *hpriv, void __iomem *mmio)
1585 writel(0, mmio + MV_GPIO_PORT_CTL);
1587 /* FIXME: handle MV_HP_ERRATA_50XXB2 errata */
1589 tmp = readl(mmio + MV_PCI_EXP_ROM_BAR_CTL);
1591 writel(tmp, mmio + MV_PCI_EXP_ROM_BAR_CTL);
1594 static void mv5_phy_errata(struct mv_host_priv *hpriv, void __iomem *mmio,
1597 void __iomem *phy_mmio = mv5_phy_base(mmio, port);
1598 const u32 mask = (1<<12) | (1<<11) | (1<<7) | (1<<6) | (1<<5);
1600 int fix_apm_sq = (hpriv->hp_flags & MV_HP_ERRATA_50XXB0);
1603 tmp = readl(phy_mmio + MV5_LT_MODE);
1605 writel(tmp, phy_mmio + MV5_LT_MODE);
1607 tmp = readl(phy_mmio + MV5_PHY_CTL);
1610 writel(tmp, phy_mmio + MV5_PHY_CTL);
1613 tmp = readl(phy_mmio + MV5_PHY_MODE);
1615 tmp |= hpriv->signal[port].pre;
1616 tmp |= hpriv->signal[port].amps;
1617 writel(tmp, phy_mmio + MV5_PHY_MODE);
1622 #define ZERO(reg) writel(0, port_mmio + (reg))
1623 static void mv5_reset_hc_port(struct mv_host_priv *hpriv, void __iomem *mmio,
1626 void __iomem *port_mmio = mv_port_base(mmio, port);
1628 writelfl(EDMA_DS, port_mmio + EDMA_CMD_OFS);
1630 mv_channel_reset(hpriv, mmio, port);
1632 ZERO(0x028); /* command */
1633 writel(0x11f, port_mmio + EDMA_CFG_OFS);
1634 ZERO(0x004); /* timer */
1635 ZERO(0x008); /* irq err cause */
1636 ZERO(0x00c); /* irq err mask */
1637 ZERO(0x010); /* rq bah */
1638 ZERO(0x014); /* rq inp */
1639 ZERO(0x018); /* rq outp */
1640 ZERO(0x01c); /* respq bah */
1641 ZERO(0x024); /* respq outp */
1642 ZERO(0x020); /* respq inp */
1643 ZERO(0x02c); /* test control */
1644 writel(0xbc, port_mmio + EDMA_IORDY_TMOUT);
1648 #define ZERO(reg) writel(0, hc_mmio + (reg))
1649 static void mv5_reset_one_hc(struct mv_host_priv *hpriv, void __iomem *mmio,
1652 void __iomem *hc_mmio = mv_hc_base(mmio, hc);
1660 tmp = readl(hc_mmio + 0x20);
1663 writel(tmp, hc_mmio + 0x20);
1667 static int mv5_reset_hc(struct mv_host_priv *hpriv, void __iomem *mmio,
1670 unsigned int hc, port;
1672 for (hc = 0; hc < n_hc; hc++) {
1673 for (port = 0; port < MV_PORTS_PER_HC; port++)
1674 mv5_reset_hc_port(hpriv, mmio,
1675 (hc * MV_PORTS_PER_HC) + port);
1677 mv5_reset_one_hc(hpriv, mmio, hc);
1684 #define ZERO(reg) writel(0, mmio + (reg))
1685 static void mv_reset_pci_bus(struct pci_dev *pdev, void __iomem *mmio)
1689 tmp = readl(mmio + MV_PCI_MODE);
1691 writel(tmp, mmio + MV_PCI_MODE);
1693 ZERO(MV_PCI_DISC_TIMER);
1694 ZERO(MV_PCI_MSI_TRIGGER);
1695 writel(0x000100ff, mmio + MV_PCI_XBAR_TMOUT);
1696 ZERO(HC_MAIN_IRQ_MASK_OFS);
1697 ZERO(MV_PCI_SERR_MASK);
1698 ZERO(PCI_IRQ_CAUSE_OFS);
1699 ZERO(PCI_IRQ_MASK_OFS);
1700 ZERO(MV_PCI_ERR_LOW_ADDRESS);
1701 ZERO(MV_PCI_ERR_HIGH_ADDRESS);
1702 ZERO(MV_PCI_ERR_ATTRIBUTE);
1703 ZERO(MV_PCI_ERR_COMMAND);
1707 static void mv6_reset_flash(struct mv_host_priv *hpriv, void __iomem *mmio)
1711 mv5_reset_flash(hpriv, mmio);
1713 tmp = readl(mmio + MV_GPIO_PORT_CTL);
1715 tmp |= (1 << 5) | (1 << 6);
1716 writel(tmp, mmio + MV_GPIO_PORT_CTL);
1720 * mv6_reset_hc - Perform the 6xxx global soft reset
1721 * @mmio: base address of the HBA
1723 * This routine only applies to 6xxx parts.
1726 * Inherited from caller.
1728 static int mv6_reset_hc(struct mv_host_priv *hpriv, void __iomem *mmio,
1731 void __iomem *reg = mmio + PCI_MAIN_CMD_STS_OFS;
1735 /* Following procedure defined in PCI "main command and status
1739 writel(t | STOP_PCI_MASTER, reg);
1741 for (i = 0; i < 1000; i++) {
1744 if (PCI_MASTER_EMPTY & t) {
1748 if (!(PCI_MASTER_EMPTY & t)) {
1749 printk(KERN_ERR DRV_NAME ": PCI master won't flush\n");
1757 writel(t | GLOB_SFT_RST, reg);
1760 } while (!(GLOB_SFT_RST & t) && (i-- > 0));
1762 if (!(GLOB_SFT_RST & t)) {
1763 printk(KERN_ERR DRV_NAME ": can't set global reset\n");
1768 /* clear reset and *reenable the PCI master* (not mentioned in spec) */
1771 writel(t & ~(GLOB_SFT_RST | STOP_PCI_MASTER), reg);
1774 } while ((GLOB_SFT_RST & t) && (i-- > 0));
1776 if (GLOB_SFT_RST & t) {
1777 printk(KERN_ERR DRV_NAME ": can't clear global reset\n");
1784 static void mv6_read_preamp(struct mv_host_priv *hpriv, int idx,
1787 void __iomem *port_mmio;
1790 tmp = readl(mmio + MV_RESET_CFG);
1791 if ((tmp & (1 << 0)) == 0) {
1792 hpriv->signal[idx].amps = 0x7 << 8;
1793 hpriv->signal[idx].pre = 0x1 << 5;
1797 port_mmio = mv_port_base(mmio, idx);
1798 tmp = readl(port_mmio + PHY_MODE2);
1800 hpriv->signal[idx].amps = tmp & 0x700; /* bits 10:8 */
1801 hpriv->signal[idx].pre = tmp & 0xe0; /* bits 7:5 */
1804 static void mv6_enable_leds(struct mv_host_priv *hpriv, void __iomem *mmio)
1806 writel(0x00000060, mmio + MV_GPIO_PORT_CTL);
1809 static void mv6_phy_errata(struct mv_host_priv *hpriv, void __iomem *mmio,
1812 void __iomem *port_mmio = mv_port_base(mmio, port);
1814 u32 hp_flags = hpriv->hp_flags;
1816 hp_flags & (MV_HP_ERRATA_60X1B2 | MV_HP_ERRATA_60X1C0);
1818 hp_flags & (MV_HP_ERRATA_60X1B2 | MV_HP_ERRATA_60X1C0);
1821 if (fix_phy_mode2) {
1822 m2 = readl(port_mmio + PHY_MODE2);
1825 writel(m2, port_mmio + PHY_MODE2);
1829 m2 = readl(port_mmio + PHY_MODE2);
1830 m2 &= ~((1 << 16) | (1 << 31));
1831 writel(m2, port_mmio + PHY_MODE2);
1836 /* who knows what this magic does */
1837 tmp = readl(port_mmio + PHY_MODE3);
1840 writel(tmp, port_mmio + PHY_MODE3);
1842 if (fix_phy_mode4) {
1845 m4 = readl(port_mmio + PHY_MODE4);
1847 if (hp_flags & MV_HP_ERRATA_60X1B2)
1848 tmp = readl(port_mmio + 0x310);
1850 m4 = (m4 & ~(1 << 1)) | (1 << 0);
1852 writel(m4, port_mmio + PHY_MODE4);
1854 if (hp_flags & MV_HP_ERRATA_60X1B2)
1855 writel(tmp, port_mmio + 0x310);
1858 /* Revert values of pre-emphasis and signal amps to the saved ones */
1859 m2 = readl(port_mmio + PHY_MODE2);
1861 m2 &= ~MV_M2_PREAMP_MASK;
1862 m2 |= hpriv->signal[port].amps;
1863 m2 |= hpriv->signal[port].pre;
1866 /* according to mvSata 3.6.1, some IIE values are fixed */
1867 if (IS_GEN_IIE(hpriv)) {
1872 writel(m2, port_mmio + PHY_MODE2);
1875 static void mv_channel_reset(struct mv_host_priv *hpriv, void __iomem *mmio,
1876 unsigned int port_no)
1878 void __iomem *port_mmio = mv_port_base(mmio, port_no);
1880 writelfl(ATA_RST, port_mmio + EDMA_CMD_OFS);
1882 if (IS_60XX(hpriv)) {
1883 u32 ifctl = readl(port_mmio + SATA_INTERFACE_CTL);
1884 ifctl |= (1 << 7); /* enable gen2i speed */
1885 ifctl = (ifctl & 0xfff) | 0x9b1000; /* from chip spec */
1886 writelfl(ifctl, port_mmio + SATA_INTERFACE_CTL);
1889 udelay(25); /* allow reset propagation */
1891 /* Spec never mentions clearing the bit. Marvell's driver does
1892 * clear the bit, however.
1894 writelfl(0, port_mmio + EDMA_CMD_OFS);
1896 hpriv->ops->phy_errata(hpriv, mmio, port_no);
1902 static void mv_stop_and_reset(struct ata_port *ap)
1904 struct mv_host_priv *hpriv = ap->host_set->private_data;
1905 void __iomem *mmio = ap->host_set->mmio_base;
1909 mv_channel_reset(hpriv, mmio, ap->port_no);
1911 __mv_phy_reset(ap, 0);
1914 static inline void __msleep(unsigned int msec, int can_sleep)
1923 * __mv_phy_reset - Perform eDMA reset followed by COMRESET
1924 * @ap: ATA channel to manipulate
1926 * Part of this is taken from __sata_phy_reset and modified to
1927 * not sleep since this routine gets called from interrupt level.
1930 * Inherited from caller. This is coded to safe to call at
1931 * interrupt level, i.e. it does not sleep.
1933 static void __mv_phy_reset(struct ata_port *ap, int can_sleep)
1935 struct mv_port_priv *pp = ap->private_data;
1936 struct mv_host_priv *hpriv = ap->host_set->private_data;
1937 void __iomem *port_mmio = mv_ap_base(ap);
1938 struct ata_taskfile tf;
1939 struct ata_device *dev = &ap->device[0];
1940 unsigned long timeout;
1944 VPRINTK("ENTER, port %u, mmio 0x%p\n", ap->port_no, port_mmio);
1946 DPRINTK("S-regs after ATA_RST: SStat 0x%08x SErr 0x%08x "
1947 "SCtrl 0x%08x\n", mv_scr_read(ap, SCR_STATUS),
1948 mv_scr_read(ap, SCR_ERROR), mv_scr_read(ap, SCR_CONTROL));
1950 /* Issue COMRESET via SControl */
1952 scr_write_flush(ap, SCR_CONTROL, 0x301);
1953 __msleep(1, can_sleep);
1955 scr_write_flush(ap, SCR_CONTROL, 0x300);
1956 __msleep(20, can_sleep);
1958 timeout = jiffies + msecs_to_jiffies(200);
1960 sstatus = scr_read(ap, SCR_STATUS) & 0x3;
1961 if ((sstatus == 3) || (sstatus == 0))
1964 __msleep(1, can_sleep);
1965 } while (time_before(jiffies, timeout));
1967 /* work around errata */
1968 if (IS_60XX(hpriv) &&
1969 (sstatus != 0x0) && (sstatus != 0x113) && (sstatus != 0x123) &&
1971 goto comreset_retry;
1973 DPRINTK("S-regs after PHY wake: SStat 0x%08x SErr 0x%08x "
1974 "SCtrl 0x%08x\n", mv_scr_read(ap, SCR_STATUS),
1975 mv_scr_read(ap, SCR_ERROR), mv_scr_read(ap, SCR_CONTROL));
1977 if (sata_dev_present(ap)) {
1980 printk(KERN_INFO "ata%u: no device found (phy stat %08x)\n",
1981 ap->id, scr_read(ap, SCR_STATUS));
1982 ata_port_disable(ap);
1985 ap->cbl = ATA_CBL_SATA;
1987 /* even after SStatus reflects that device is ready,
1988 * it seems to take a while for link to be fully
1989 * established (and thus Status no longer 0x80/0x7F),
1990 * so we poll a bit for that, here.
1994 u8 drv_stat = ata_check_status(ap);
1995 if ((drv_stat != 0x80) && (drv_stat != 0x7f))
1997 __msleep(500, can_sleep);
2002 tf.lbah = readb((void __iomem *) ap->ioaddr.lbah_addr);
2003 tf.lbam = readb((void __iomem *) ap->ioaddr.lbam_addr);
2004 tf.lbal = readb((void __iomem *) ap->ioaddr.lbal_addr);
2005 tf.nsect = readb((void __iomem *) ap->ioaddr.nsect_addr);
2007 dev->class = ata_dev_classify(&tf);
2008 if (!ata_dev_present(dev)) {
2009 VPRINTK("Port disabled post-sig: No device present.\n");
2010 ata_port_disable(ap);
2013 writelfl(0, port_mmio + EDMA_ERR_IRQ_CAUSE_OFS);
2015 pp->pp_flags &= ~MV_PP_FLAG_EDMA_EN;
2020 static void mv_phy_reset(struct ata_port *ap)
2022 __mv_phy_reset(ap, 1);
2026 * mv_eng_timeout - Routine called by libata when SCSI times out I/O
2027 * @ap: ATA channel to manipulate
2029 * Intent is to clear all pending error conditions, reset the
2030 * chip/bus, fail the command, and move on.
2033 * This routine holds the host_set lock while failing the command.
2035 static void mv_eng_timeout(struct ata_port *ap)
2037 struct ata_queued_cmd *qc;
2039 printk(KERN_ERR "ata%u: Entering mv_eng_timeout\n",ap->id);
2040 DPRINTK("All regs @ start of eng_timeout\n");
2041 mv_dump_all_regs(ap->host_set->mmio_base, ap->port_no,
2042 to_pci_dev(ap->host_set->dev));
2044 qc = ata_qc_from_tag(ap, ap->active_tag);
2045 printk(KERN_ERR "mmio_base %p ap %p qc %p scsi_cmnd %p &cmnd %p\n",
2046 ap->host_set->mmio_base, ap, qc, qc->scsicmd,
2047 &qc->scsicmd->cmnd);
2050 mv_stop_and_reset(ap);
2052 WARN_ON(!(qc->flags & ATA_QCFLAG_ACTIVE));
2053 if (qc->flags & ATA_QCFLAG_ACTIVE) {
2054 qc->err_mask |= AC_ERR_TIMEOUT;
2055 ata_eh_qc_complete(qc);
2060 * mv_port_init - Perform some early initialization on a single port.
2061 * @port: libata data structure storing shadow register addresses
2062 * @port_mmio: base address of the port
2064 * Initialize shadow register mmio addresses, clear outstanding
2065 * interrupts on the port, and unmask interrupts for the future
2066 * start of the port.
2069 * Inherited from caller.
2071 static void mv_port_init(struct ata_ioports *port, void __iomem *port_mmio)
2073 unsigned long shd_base = (unsigned long) port_mmio + SHD_BLK_OFS;
2076 /* PIO related setup
2078 port->data_addr = shd_base + (sizeof(u32) * ATA_REG_DATA);
2080 port->feature_addr = shd_base + (sizeof(u32) * ATA_REG_ERR);
2081 port->nsect_addr = shd_base + (sizeof(u32) * ATA_REG_NSECT);
2082 port->lbal_addr = shd_base + (sizeof(u32) * ATA_REG_LBAL);
2083 port->lbam_addr = shd_base + (sizeof(u32) * ATA_REG_LBAM);
2084 port->lbah_addr = shd_base + (sizeof(u32) * ATA_REG_LBAH);
2085 port->device_addr = shd_base + (sizeof(u32) * ATA_REG_DEVICE);
2087 port->command_addr = shd_base + (sizeof(u32) * ATA_REG_STATUS);
2088 /* special case: control/altstatus doesn't have ATA_REG_ address */
2089 port->altstatus_addr = port->ctl_addr = shd_base + SHD_CTL_AST_OFS;
2092 port->cmd_addr = port->bmdma_addr = port->scr_addr = 0;
2094 /* Clear any currently outstanding port interrupt conditions */
2095 serr_ofs = mv_scr_offset(SCR_ERROR);
2096 writelfl(readl(port_mmio + serr_ofs), port_mmio + serr_ofs);
2097 writelfl(0, port_mmio + EDMA_ERR_IRQ_CAUSE_OFS);
2099 /* unmask all EDMA error interrupts */
2100 writelfl(~0, port_mmio + EDMA_ERR_IRQ_MASK_OFS);
2102 VPRINTK("EDMA cfg=0x%08x EDMA IRQ err cause/mask=0x%08x/0x%08x\n",
2103 readl(port_mmio + EDMA_CFG_OFS),
2104 readl(port_mmio + EDMA_ERR_IRQ_CAUSE_OFS),
2105 readl(port_mmio + EDMA_ERR_IRQ_MASK_OFS));
2108 static int mv_chip_id(struct pci_dev *pdev, struct mv_host_priv *hpriv,
2109 unsigned int board_idx)
2112 u32 hp_flags = hpriv->hp_flags;
2114 pci_read_config_byte(pdev, PCI_REVISION_ID, &rev_id);
2118 hpriv->ops = &mv5xxx_ops;
2119 hp_flags |= MV_HP_50XX;
2123 hp_flags |= MV_HP_ERRATA_50XXB0;
2126 hp_flags |= MV_HP_ERRATA_50XXB2;
2129 dev_printk(KERN_WARNING, &pdev->dev,
2130 "Applying 50XXB2 workarounds to unknown rev\n");
2131 hp_flags |= MV_HP_ERRATA_50XXB2;
2138 hpriv->ops = &mv5xxx_ops;
2139 hp_flags |= MV_HP_50XX;
2143 hp_flags |= MV_HP_ERRATA_50XXB0;
2146 hp_flags |= MV_HP_ERRATA_50XXB2;
2149 dev_printk(KERN_WARNING, &pdev->dev,
2150 "Applying B2 workarounds to unknown rev\n");
2151 hp_flags |= MV_HP_ERRATA_50XXB2;
2158 hpriv->ops = &mv6xxx_ops;
2162 hp_flags |= MV_HP_ERRATA_60X1B2;
2165 hp_flags |= MV_HP_ERRATA_60X1C0;
2168 dev_printk(KERN_WARNING, &pdev->dev,
2169 "Applying B2 workarounds to unknown rev\n");
2170 hp_flags |= MV_HP_ERRATA_60X1B2;
2177 hpriv->ops = &mv6xxx_ops;
2179 hp_flags |= MV_HP_GEN_IIE;
2183 hp_flags |= MV_HP_ERRATA_XX42A0;
2186 hp_flags |= MV_HP_ERRATA_60X1C0;
2189 dev_printk(KERN_WARNING, &pdev->dev,
2190 "Applying 60X1C0 workarounds to unknown rev\n");
2191 hp_flags |= MV_HP_ERRATA_60X1C0;
2197 printk(KERN_ERR DRV_NAME ": BUG: invalid board index %u\n", board_idx);
2201 hpriv->hp_flags = hp_flags;
2207 * mv_init_host - Perform some early initialization of the host.
2208 * @pdev: host PCI device
2209 * @probe_ent: early data struct representing the host
2211 * If possible, do an early global reset of the host. Then do
2212 * our port init and clear/unmask all/relevant host interrupts.
2215 * Inherited from caller.
2217 static int mv_init_host(struct pci_dev *pdev, struct ata_probe_ent *probe_ent,
2218 unsigned int board_idx)
2220 int rc = 0, n_hc, port, hc;
2221 void __iomem *mmio = probe_ent->mmio_base;
2222 struct mv_host_priv *hpriv = probe_ent->private_data;
2224 /* global interrupt mask */
2225 writel(0, mmio + HC_MAIN_IRQ_MASK_OFS);
2227 rc = mv_chip_id(pdev, hpriv, board_idx);
2231 n_hc = mv_get_hc_count(probe_ent->host_flags);
2232 probe_ent->n_ports = MV_PORTS_PER_HC * n_hc;
2234 for (port = 0; port < probe_ent->n_ports; port++)
2235 hpriv->ops->read_preamp(hpriv, port, mmio);
2237 rc = hpriv->ops->reset_hc(hpriv, mmio, n_hc);
2241 hpriv->ops->reset_flash(hpriv, mmio);
2242 hpriv->ops->reset_bus(pdev, mmio);
2243 hpriv->ops->enable_leds(hpriv, mmio);
2245 for (port = 0; port < probe_ent->n_ports; port++) {
2246 if (IS_60XX(hpriv)) {
2247 void __iomem *port_mmio = mv_port_base(mmio, port);
2249 u32 ifctl = readl(port_mmio + SATA_INTERFACE_CTL);
2250 ifctl |= (1 << 7); /* enable gen2i speed */
2251 ifctl = (ifctl & 0xfff) | 0x9b1000; /* from chip spec */
2252 writelfl(ifctl, port_mmio + SATA_INTERFACE_CTL);
2255 hpriv->ops->phy_errata(hpriv, mmio, port);
2258 for (port = 0; port < probe_ent->n_ports; port++) {
2259 void __iomem *port_mmio = mv_port_base(mmio, port);
2260 mv_port_init(&probe_ent->port[port], port_mmio);
2263 for (hc = 0; hc < n_hc; hc++) {
2264 void __iomem *hc_mmio = mv_hc_base(mmio, hc);
2266 VPRINTK("HC%i: HC config=0x%08x HC IRQ cause "
2267 "(before clear)=0x%08x\n", hc,
2268 readl(hc_mmio + HC_CFG_OFS),
2269 readl(hc_mmio + HC_IRQ_CAUSE_OFS));
2271 /* Clear any currently outstanding hc interrupt conditions */
2272 writelfl(0, hc_mmio + HC_IRQ_CAUSE_OFS);
2275 /* Clear any currently outstanding host interrupt conditions */
2276 writelfl(0, mmio + PCI_IRQ_CAUSE_OFS);
2278 /* and unmask interrupt generation for host regs */
2279 writelfl(PCI_UNMASK_ALL_IRQS, mmio + PCI_IRQ_MASK_OFS);
2280 writelfl(~HC_MAIN_MASKED_IRQS, mmio + HC_MAIN_IRQ_MASK_OFS);
2282 VPRINTK("HC MAIN IRQ cause/mask=0x%08x/0x%08x "
2283 "PCI int cause/mask=0x%08x/0x%08x\n",
2284 readl(mmio + HC_MAIN_IRQ_CAUSE_OFS),
2285 readl(mmio + HC_MAIN_IRQ_MASK_OFS),
2286 readl(mmio + PCI_IRQ_CAUSE_OFS),
2287 readl(mmio + PCI_IRQ_MASK_OFS));
2294 * mv_print_info - Dump key info to kernel log for perusal.
2295 * @probe_ent: early data struct representing the host
2297 * FIXME: complete this.
2300 * Inherited from caller.
2302 static void mv_print_info(struct ata_probe_ent *probe_ent)
2304 struct pci_dev *pdev = to_pci_dev(probe_ent->dev);
2305 struct mv_host_priv *hpriv = probe_ent->private_data;
2309 /* Use this to determine the HW stepping of the chip so we know
2310 * what errata to workaround
2312 pci_read_config_byte(pdev, PCI_REVISION_ID, &rev_id);
2314 pci_read_config_byte(pdev, PCI_CLASS_DEVICE, &scc);
2317 else if (scc == 0x01)
2322 dev_printk(KERN_INFO, &pdev->dev,
2323 "%u slots %u ports %s mode IRQ via %s\n",
2324 (unsigned)MV_MAX_Q_DEPTH, probe_ent->n_ports,
2325 scc_s, (MV_HP_FLAG_MSI & hpriv->hp_flags) ? "MSI" : "INTx");
2329 * mv_init_one - handle a positive probe of a Marvell host
2330 * @pdev: PCI device found
2331 * @ent: PCI device ID entry for the matched host
2334 * Inherited from caller.
2336 static int mv_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
2338 static int printed_version = 0;
2339 struct ata_probe_ent *probe_ent = NULL;
2340 struct mv_host_priv *hpriv;
2341 unsigned int board_idx = (unsigned int)ent->driver_data;
2342 void __iomem *mmio_base;
2343 int pci_dev_busy = 0, rc;
2345 if (!printed_version++)
2346 dev_printk(KERN_INFO, &pdev->dev, "version " DRV_VERSION "\n");
2348 rc = pci_enable_device(pdev);
2352 pci_set_master(pdev);
2354 rc = pci_request_regions(pdev, DRV_NAME);
2360 probe_ent = kmalloc(sizeof(*probe_ent), GFP_KERNEL);
2361 if (probe_ent == NULL) {
2363 goto err_out_regions;
2366 memset(probe_ent, 0, sizeof(*probe_ent));
2367 probe_ent->dev = pci_dev_to_dev(pdev);
2368 INIT_LIST_HEAD(&probe_ent->node);
2370 mmio_base = pci_iomap(pdev, MV_PRIMARY_BAR, 0);
2371 if (mmio_base == NULL) {
2373 goto err_out_free_ent;
2376 hpriv = kmalloc(sizeof(*hpriv), GFP_KERNEL);
2379 goto err_out_iounmap;
2381 memset(hpriv, 0, sizeof(*hpriv));
2383 probe_ent->sht = mv_port_info[board_idx].sht;
2384 probe_ent->host_flags = mv_port_info[board_idx].host_flags;
2385 probe_ent->pio_mask = mv_port_info[board_idx].pio_mask;
2386 probe_ent->udma_mask = mv_port_info[board_idx].udma_mask;
2387 probe_ent->port_ops = mv_port_info[board_idx].port_ops;
2389 probe_ent->irq = pdev->irq;
2390 probe_ent->irq_flags = SA_SHIRQ;
2391 probe_ent->mmio_base = mmio_base;
2392 probe_ent->private_data = hpriv;
2394 /* initialize adapter */
2395 rc = mv_init_host(pdev, probe_ent, board_idx);
2400 /* Enable interrupts */
2401 if (msi && pci_enable_msi(pdev) == 0) {
2402 hpriv->hp_flags |= MV_HP_FLAG_MSI;
2407 mv_dump_pci_cfg(pdev, 0x68);
2408 mv_print_info(probe_ent);
2410 if (ata_device_add(probe_ent) == 0) {
2411 rc = -ENODEV; /* No devices discovered */
2412 goto err_out_dev_add;
2419 if (MV_HP_FLAG_MSI & hpriv->hp_flags) {
2420 pci_disable_msi(pdev);
2427 pci_iounmap(pdev, mmio_base);
2431 pci_release_regions(pdev);
2433 if (!pci_dev_busy) {
2434 pci_disable_device(pdev);
2440 static int __init mv_init(void)
2442 return pci_module_init(&mv_pci_driver);
2445 static void __exit mv_exit(void)
2447 pci_unregister_driver(&mv_pci_driver);
2450 MODULE_AUTHOR("Brett Russ");
2451 MODULE_DESCRIPTION("SCSI low-level driver for Marvell SATA controllers");
2452 MODULE_LICENSE("GPL");
2453 MODULE_DEVICE_TABLE(pci, mv_pci_tbl);
2454 MODULE_VERSION(DRV_VERSION);
2456 module_param(msi, int, 0444);
2457 MODULE_PARM_DESC(msi, "Enable use of PCI MSI (0=off, 1=on)");
2459 module_init(mv_init);
2460 module_exit(mv_exit);