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 |
96 ATA_FLAG_NO_ATAPI | ATA_FLAG_PIO_POLLING),
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 *host);
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 static void mv_eng_timeout(struct ata_port *ap);
353 static int mv_init_one(struct pci_dev *pdev, const struct pci_device_id *ent);
355 static void mv5_phy_errata(struct mv_host_priv *hpriv, void __iomem *mmio,
357 static void mv5_enable_leds(struct mv_host_priv *hpriv, void __iomem *mmio);
358 static void mv5_read_preamp(struct mv_host_priv *hpriv, int idx,
360 static int mv5_reset_hc(struct mv_host_priv *hpriv, void __iomem *mmio,
362 static void mv5_reset_flash(struct mv_host_priv *hpriv, void __iomem *mmio);
363 static void mv5_reset_bus(struct pci_dev *pdev, void __iomem *mmio);
365 static void mv6_phy_errata(struct mv_host_priv *hpriv, void __iomem *mmio,
367 static void mv6_enable_leds(struct mv_host_priv *hpriv, void __iomem *mmio);
368 static void mv6_read_preamp(struct mv_host_priv *hpriv, int idx,
370 static int mv6_reset_hc(struct mv_host_priv *hpriv, void __iomem *mmio,
372 static void mv6_reset_flash(struct mv_host_priv *hpriv, void __iomem *mmio);
373 static void mv_reset_pci_bus(struct pci_dev *pdev, void __iomem *mmio);
374 static void mv_channel_reset(struct mv_host_priv *hpriv, void __iomem *mmio,
375 unsigned int port_no);
376 static void mv_stop_and_reset(struct ata_port *ap);
378 static struct scsi_host_template mv_sht = {
379 .module = THIS_MODULE,
381 .ioctl = ata_scsi_ioctl,
382 .queuecommand = ata_scsi_queuecmd,
383 .can_queue = MV_USE_Q_DEPTH,
384 .this_id = ATA_SHT_THIS_ID,
385 .sg_tablesize = MV_MAX_SG_CT / 2,
386 .cmd_per_lun = ATA_SHT_CMD_PER_LUN,
387 .emulated = ATA_SHT_EMULATED,
388 .use_clustering = ATA_SHT_USE_CLUSTERING,
389 .proc_name = DRV_NAME,
390 .dma_boundary = MV_DMA_BOUNDARY,
391 .slave_configure = ata_scsi_slave_config,
392 .slave_destroy = ata_scsi_slave_destroy,
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,
409 .data_xfer = ata_mmio_data_xfer,
411 .eng_timeout = mv_eng_timeout,
413 .irq_handler = mv_interrupt,
414 .irq_clear = mv_irq_clear,
416 .scr_read = mv5_scr_read,
417 .scr_write = mv5_scr_write,
419 .port_start = mv_port_start,
420 .port_stop = mv_port_stop,
421 .host_stop = mv_host_stop,
424 static const struct ata_port_operations mv6_ops = {
425 .port_disable = ata_port_disable,
427 .tf_load = ata_tf_load,
428 .tf_read = ata_tf_read,
429 .check_status = ata_check_status,
430 .exec_command = ata_exec_command,
431 .dev_select = ata_std_dev_select,
433 .phy_reset = mv_phy_reset,
435 .qc_prep = mv_qc_prep,
436 .qc_issue = mv_qc_issue,
437 .data_xfer = ata_mmio_data_xfer,
439 .eng_timeout = mv_eng_timeout,
441 .irq_handler = mv_interrupt,
442 .irq_clear = mv_irq_clear,
444 .scr_read = mv_scr_read,
445 .scr_write = mv_scr_write,
447 .port_start = mv_port_start,
448 .port_stop = mv_port_stop,
449 .host_stop = mv_host_stop,
452 static const struct ata_port_operations mv_iie_ops = {
453 .port_disable = ata_port_disable,
455 .tf_load = ata_tf_load,
456 .tf_read = ata_tf_read,
457 .check_status = ata_check_status,
458 .exec_command = ata_exec_command,
459 .dev_select = ata_std_dev_select,
461 .phy_reset = mv_phy_reset,
463 .qc_prep = mv_qc_prep_iie,
464 .qc_issue = mv_qc_issue,
465 .data_xfer = ata_mmio_data_xfer,
467 .eng_timeout = mv_eng_timeout,
469 .irq_handler = mv_interrupt,
470 .irq_clear = mv_irq_clear,
472 .scr_read = mv_scr_read,
473 .scr_write = mv_scr_write,
475 .port_start = mv_port_start,
476 .port_stop = mv_port_stop,
477 .host_stop = mv_host_stop,
480 static const struct ata_port_info mv_port_info[] = {
483 .flags = MV_COMMON_FLAGS,
484 .pio_mask = 0x1f, /* pio0-4 */
485 .udma_mask = 0x7f, /* udma0-6 */
486 .port_ops = &mv5_ops,
490 .flags = (MV_COMMON_FLAGS | MV_FLAG_DUAL_HC),
491 .pio_mask = 0x1f, /* pio0-4 */
492 .udma_mask = 0x7f, /* udma0-6 */
493 .port_ops = &mv5_ops,
497 .flags = (MV_COMMON_FLAGS | MV_FLAG_DUAL_HC),
498 .pio_mask = 0x1f, /* pio0-4 */
499 .udma_mask = 0x7f, /* udma0-6 */
500 .port_ops = &mv5_ops,
504 .flags = (MV_COMMON_FLAGS | MV_6XXX_FLAGS),
505 .pio_mask = 0x1f, /* pio0-4 */
506 .udma_mask = 0x7f, /* udma0-6 */
507 .port_ops = &mv6_ops,
511 .flags = (MV_COMMON_FLAGS | MV_6XXX_FLAGS |
513 .pio_mask = 0x1f, /* pio0-4 */
514 .udma_mask = 0x7f, /* udma0-6 */
515 .port_ops = &mv6_ops,
519 .flags = (MV_COMMON_FLAGS | MV_6XXX_FLAGS),
520 .pio_mask = 0x1f, /* pio0-4 */
521 .udma_mask = 0x7f, /* udma0-6 */
522 .port_ops = &mv_iie_ops,
526 .flags = (MV_COMMON_FLAGS | MV_6XXX_FLAGS |
528 .pio_mask = 0x1f, /* pio0-4 */
529 .udma_mask = 0x7f, /* udma0-6 */
530 .port_ops = &mv_iie_ops,
534 static const struct pci_device_id mv_pci_tbl[] = {
535 { PCI_VDEVICE(MARVELL, 0x5040), chip_504x },
536 { PCI_VDEVICE(MARVELL, 0x5041), chip_504x },
537 { PCI_VDEVICE(MARVELL, 0x5080), chip_5080 },
538 { PCI_VDEVICE(MARVELL, 0x5081), chip_508x },
540 { PCI_VDEVICE(MARVELL, 0x6040), chip_604x },
541 { PCI_VDEVICE(MARVELL, 0x6041), chip_604x },
542 { PCI_VDEVICE(MARVELL, 0x6042), chip_6042 },
543 { PCI_VDEVICE(MARVELL, 0x6080), chip_608x },
544 { PCI_VDEVICE(MARVELL, 0x6081), chip_608x },
546 { PCI_VDEVICE(ADAPTEC2, 0x0241), chip_604x },
548 { } /* terminate list */
551 static struct pci_driver mv_pci_driver = {
553 .id_table = mv_pci_tbl,
554 .probe = mv_init_one,
555 .remove = ata_pci_remove_one,
558 static const struct mv_hw_ops mv5xxx_ops = {
559 .phy_errata = mv5_phy_errata,
560 .enable_leds = mv5_enable_leds,
561 .read_preamp = mv5_read_preamp,
562 .reset_hc = mv5_reset_hc,
563 .reset_flash = mv5_reset_flash,
564 .reset_bus = mv5_reset_bus,
567 static const struct mv_hw_ops mv6xxx_ops = {
568 .phy_errata = mv6_phy_errata,
569 .enable_leds = mv6_enable_leds,
570 .read_preamp = mv6_read_preamp,
571 .reset_hc = mv6_reset_hc,
572 .reset_flash = mv6_reset_flash,
573 .reset_bus = mv_reset_pci_bus,
579 static int msi; /* Use PCI msi; either zero (off, default) or non-zero */
586 static inline void writelfl(unsigned long data, void __iomem *addr)
589 (void) readl(addr); /* flush to avoid PCI posted write */
592 static inline void __iomem *mv_hc_base(void __iomem *base, unsigned int hc)
594 return (base + MV_SATAHC0_REG_BASE + (hc * MV_SATAHC_REG_SZ));
597 static inline unsigned int mv_hc_from_port(unsigned int port)
599 return port >> MV_PORT_HC_SHIFT;
602 static inline unsigned int mv_hardport_from_port(unsigned int port)
604 return port & MV_PORT_MASK;
607 static inline void __iomem *mv_hc_base_from_port(void __iomem *base,
610 return mv_hc_base(base, mv_hc_from_port(port));
613 static inline void __iomem *mv_port_base(void __iomem *base, unsigned int port)
615 return mv_hc_base_from_port(base, port) +
616 MV_SATAHC_ARBTR_REG_SZ +
617 (mv_hardport_from_port(port) * MV_PORT_REG_SZ);
620 static inline void __iomem *mv_ap_base(struct ata_port *ap)
622 return mv_port_base(ap->host->mmio_base, ap->port_no);
625 static inline int mv_get_hc_count(unsigned long port_flags)
627 return ((port_flags & MV_FLAG_DUAL_HC) ? 2 : 1);
630 static void mv_irq_clear(struct ata_port *ap)
635 * mv_start_dma - Enable eDMA engine
636 * @base: port base address
637 * @pp: port private data
639 * Verify the local cache of the eDMA state is accurate with a
643 * Inherited from caller.
645 static void mv_start_dma(void __iomem *base, struct mv_port_priv *pp)
647 if (!(MV_PP_FLAG_EDMA_EN & pp->pp_flags)) {
648 writelfl(EDMA_EN, base + EDMA_CMD_OFS);
649 pp->pp_flags |= MV_PP_FLAG_EDMA_EN;
651 WARN_ON(!(EDMA_EN & readl(base + EDMA_CMD_OFS)));
655 * mv_stop_dma - Disable eDMA engine
656 * @ap: ATA channel to manipulate
658 * Verify the local cache of the eDMA state is accurate with a
662 * Inherited from caller.
664 static void mv_stop_dma(struct ata_port *ap)
666 void __iomem *port_mmio = mv_ap_base(ap);
667 struct mv_port_priv *pp = ap->private_data;
671 if (MV_PP_FLAG_EDMA_EN & pp->pp_flags) {
672 /* Disable EDMA if active. The disable bit auto clears.
674 writelfl(EDMA_DS, port_mmio + EDMA_CMD_OFS);
675 pp->pp_flags &= ~MV_PP_FLAG_EDMA_EN;
677 WARN_ON(EDMA_EN & readl(port_mmio + EDMA_CMD_OFS));
680 /* now properly wait for the eDMA to stop */
681 for (i = 1000; i > 0; i--) {
682 reg = readl(port_mmio + EDMA_CMD_OFS);
683 if (!(EDMA_EN & reg)) {
690 ata_port_printk(ap, KERN_ERR, "Unable to stop eDMA\n");
691 /* FIXME: Consider doing a reset here to recover */
696 static void mv_dump_mem(void __iomem *start, unsigned bytes)
699 for (b = 0; b < bytes; ) {
700 DPRINTK("%p: ", start + b);
701 for (w = 0; b < bytes && w < 4; w++) {
702 printk("%08x ",readl(start + b));
710 static void mv_dump_pci_cfg(struct pci_dev *pdev, unsigned bytes)
715 for (b = 0; b < bytes; ) {
716 DPRINTK("%02x: ", b);
717 for (w = 0; b < bytes && w < 4; w++) {
718 (void) pci_read_config_dword(pdev,b,&dw);
726 static void mv_dump_all_regs(void __iomem *mmio_base, int port,
727 struct pci_dev *pdev)
730 void __iomem *hc_base = mv_hc_base(mmio_base,
731 port >> MV_PORT_HC_SHIFT);
732 void __iomem *port_base;
733 int start_port, num_ports, p, start_hc, num_hcs, hc;
736 start_hc = start_port = 0;
737 num_ports = 8; /* shld be benign for 4 port devs */
740 start_hc = port >> MV_PORT_HC_SHIFT;
742 num_ports = num_hcs = 1;
744 DPRINTK("All registers for port(s) %u-%u:\n", start_port,
745 num_ports > 1 ? num_ports - 1 : start_port);
748 DPRINTK("PCI config space regs:\n");
749 mv_dump_pci_cfg(pdev, 0x68);
751 DPRINTK("PCI regs:\n");
752 mv_dump_mem(mmio_base+0xc00, 0x3c);
753 mv_dump_mem(mmio_base+0xd00, 0x34);
754 mv_dump_mem(mmio_base+0xf00, 0x4);
755 mv_dump_mem(mmio_base+0x1d00, 0x6c);
756 for (hc = start_hc; hc < start_hc + num_hcs; hc++) {
757 hc_base = mv_hc_base(mmio_base, hc);
758 DPRINTK("HC regs (HC %i):\n", hc);
759 mv_dump_mem(hc_base, 0x1c);
761 for (p = start_port; p < start_port + num_ports; p++) {
762 port_base = mv_port_base(mmio_base, p);
763 DPRINTK("EDMA regs (port %i):\n",p);
764 mv_dump_mem(port_base, 0x54);
765 DPRINTK("SATA regs (port %i):\n",p);
766 mv_dump_mem(port_base+0x300, 0x60);
771 static unsigned int mv_scr_offset(unsigned int sc_reg_in)
779 ofs = SATA_STATUS_OFS + (sc_reg_in * sizeof(u32));
782 ofs = SATA_ACTIVE_OFS; /* active is not with the others */
791 static u32 mv_scr_read(struct ata_port *ap, unsigned int sc_reg_in)
793 unsigned int ofs = mv_scr_offset(sc_reg_in);
795 if (0xffffffffU != ofs) {
796 return readl(mv_ap_base(ap) + ofs);
802 static void mv_scr_write(struct ata_port *ap, unsigned int sc_reg_in, u32 val)
804 unsigned int ofs = mv_scr_offset(sc_reg_in);
806 if (0xffffffffU != ofs) {
807 writelfl(val, mv_ap_base(ap) + ofs);
812 * mv_host_stop - Host specific cleanup/stop routine.
813 * @host: host data structure
815 * Disable ints, cleanup host memory, call general purpose
819 * Inherited from caller.
821 static void mv_host_stop(struct ata_host *host)
823 struct mv_host_priv *hpriv = host->private_data;
824 struct pci_dev *pdev = to_pci_dev(host->dev);
826 if (hpriv->hp_flags & MV_HP_FLAG_MSI) {
827 pci_disable_msi(pdev);
835 static inline void mv_priv_free(struct mv_port_priv *pp, struct device *dev)
837 dma_free_coherent(dev, MV_PORT_PRIV_DMA_SZ, pp->crpb, pp->crpb_dma);
840 static void mv_edma_cfg(struct mv_host_priv *hpriv, void __iomem *port_mmio)
842 u32 cfg = readl(port_mmio + EDMA_CFG_OFS);
844 /* set up non-NCQ EDMA configuration */
845 cfg &= ~0x1f; /* clear queue depth */
846 cfg &= ~EDMA_CFG_NCQ; /* clear NCQ mode */
847 cfg &= ~(1 << 9); /* disable equeue */
850 cfg |= (1 << 8); /* enab config burst size mask */
852 else if (IS_GEN_II(hpriv))
853 cfg |= EDMA_CFG_RD_BRST_EXT | EDMA_CFG_WR_BUFF_LEN;
855 else if (IS_GEN_IIE(hpriv)) {
856 cfg |= (1 << 23); /* dis RX PM port mask */
857 cfg &= ~(1 << 16); /* dis FIS-based switching (for now) */
858 cfg &= ~(1 << 19); /* dis 128-entry queue (for now?) */
859 cfg |= (1 << 18); /* enab early completion */
860 cfg |= (1 << 17); /* enab host q cache */
861 cfg |= (1 << 22); /* enab cutthrough */
864 writelfl(cfg, port_mmio + EDMA_CFG_OFS);
868 * mv_port_start - Port specific init/start routine.
869 * @ap: ATA channel to manipulate
871 * Allocate and point to DMA memory, init port private memory,
875 * Inherited from caller.
877 static int mv_port_start(struct ata_port *ap)
879 struct device *dev = ap->host->dev;
880 struct mv_host_priv *hpriv = ap->host->private_data;
881 struct mv_port_priv *pp;
882 void __iomem *port_mmio = mv_ap_base(ap);
887 pp = kmalloc(sizeof(*pp), GFP_KERNEL);
890 memset(pp, 0, sizeof(*pp));
892 mem = dma_alloc_coherent(dev, MV_PORT_PRIV_DMA_SZ, &mem_dma,
896 memset(mem, 0, MV_PORT_PRIV_DMA_SZ);
898 rc = ata_pad_alloc(ap, dev);
902 /* First item in chunk of DMA memory:
903 * 32-slot command request table (CRQB), 32 bytes each in size
906 pp->crqb_dma = mem_dma;
908 mem_dma += MV_CRQB_Q_SZ;
911 * 32-slot command response table (CRPB), 8 bytes each in size
914 pp->crpb_dma = mem_dma;
916 mem_dma += MV_CRPB_Q_SZ;
919 * Table of scatter-gather descriptors (ePRD), 16 bytes each
922 pp->sg_tbl_dma = mem_dma;
924 mv_edma_cfg(hpriv, port_mmio);
926 writel((pp->crqb_dma >> 16) >> 16, port_mmio + EDMA_REQ_Q_BASE_HI_OFS);
927 writelfl(pp->crqb_dma & EDMA_REQ_Q_BASE_LO_MASK,
928 port_mmio + EDMA_REQ_Q_IN_PTR_OFS);
930 if (hpriv->hp_flags & MV_HP_ERRATA_XX42A0)
931 writelfl(pp->crqb_dma & 0xffffffff,
932 port_mmio + EDMA_REQ_Q_OUT_PTR_OFS);
934 writelfl(0, port_mmio + EDMA_REQ_Q_OUT_PTR_OFS);
936 writel((pp->crpb_dma >> 16) >> 16, port_mmio + EDMA_RSP_Q_BASE_HI_OFS);
938 if (hpriv->hp_flags & MV_HP_ERRATA_XX42A0)
939 writelfl(pp->crpb_dma & 0xffffffff,
940 port_mmio + EDMA_RSP_Q_IN_PTR_OFS);
942 writelfl(0, port_mmio + EDMA_RSP_Q_IN_PTR_OFS);
944 writelfl(pp->crpb_dma & EDMA_RSP_Q_BASE_LO_MASK,
945 port_mmio + EDMA_RSP_Q_OUT_PTR_OFS);
947 /* Don't turn on EDMA here...do it before DMA commands only. Else
948 * we'll be unable to send non-data, PIO, etc due to restricted access
951 ap->private_data = pp;
955 mv_priv_free(pp, dev);
963 * mv_port_stop - Port specific cleanup/stop routine.
964 * @ap: ATA channel to manipulate
966 * Stop DMA, cleanup port memory.
969 * This routine uses the host lock to protect the DMA stop.
971 static void mv_port_stop(struct ata_port *ap)
973 struct device *dev = ap->host->dev;
974 struct mv_port_priv *pp = ap->private_data;
977 spin_lock_irqsave(&ap->host->lock, flags);
979 spin_unlock_irqrestore(&ap->host->lock, flags);
981 ap->private_data = NULL;
982 ata_pad_free(ap, dev);
983 mv_priv_free(pp, dev);
988 * mv_fill_sg - Fill out the Marvell ePRD (scatter gather) entries
989 * @qc: queued command whose SG list to source from
991 * Populate the SG list and mark the last entry.
994 * Inherited from caller.
996 static void mv_fill_sg(struct ata_queued_cmd *qc)
998 struct mv_port_priv *pp = qc->ap->private_data;
1000 struct scatterlist *sg;
1002 ata_for_each_sg(sg, qc) {
1004 u32 sg_len, len, offset;
1006 addr = sg_dma_address(sg);
1007 sg_len = sg_dma_len(sg);
1010 offset = addr & MV_DMA_BOUNDARY;
1012 if ((offset + sg_len) > 0x10000)
1013 len = 0x10000 - offset;
1015 pp->sg_tbl[i].addr = cpu_to_le32(addr & 0xffffffff);
1016 pp->sg_tbl[i].addr_hi = cpu_to_le32((addr >> 16) >> 16);
1017 pp->sg_tbl[i].flags_size = cpu_to_le32(len & 0xffff);
1022 if (!sg_len && ata_sg_is_last(sg, qc))
1023 pp->sg_tbl[i].flags_size |= cpu_to_le32(EPRD_FLAG_END_OF_TBL);
1030 static inline unsigned mv_inc_q_index(unsigned index)
1032 return (index + 1) & MV_MAX_Q_DEPTH_MASK;
1035 static inline void mv_crqb_pack_cmd(__le16 *cmdw, u8 data, u8 addr, unsigned last)
1037 u16 tmp = data | (addr << CRQB_CMD_ADDR_SHIFT) | CRQB_CMD_CS |
1038 (last ? CRQB_CMD_LAST : 0);
1039 *cmdw = cpu_to_le16(tmp);
1043 * mv_qc_prep - Host specific command preparation.
1044 * @qc: queued command to prepare
1046 * This routine simply redirects to the general purpose routine
1047 * if command is not DMA. Else, it handles prep of the CRQB
1048 * (command request block), does some sanity checking, and calls
1049 * the SG load routine.
1052 * Inherited from caller.
1054 static void mv_qc_prep(struct ata_queued_cmd *qc)
1056 struct ata_port *ap = qc->ap;
1057 struct mv_port_priv *pp = ap->private_data;
1059 struct ata_taskfile *tf;
1063 if (ATA_PROT_DMA != qc->tf.protocol)
1066 /* Fill in command request block
1068 if (!(qc->tf.flags & ATA_TFLAG_WRITE))
1069 flags |= CRQB_FLAG_READ;
1070 WARN_ON(MV_MAX_Q_DEPTH <= qc->tag);
1071 flags |= qc->tag << CRQB_TAG_SHIFT;
1073 /* get current queue index from hardware */
1074 in_index = (readl(mv_ap_base(ap) + EDMA_REQ_Q_IN_PTR_OFS)
1075 >> EDMA_REQ_Q_PTR_SHIFT) & MV_MAX_Q_DEPTH_MASK;
1077 pp->crqb[in_index].sg_addr =
1078 cpu_to_le32(pp->sg_tbl_dma & 0xffffffff);
1079 pp->crqb[in_index].sg_addr_hi =
1080 cpu_to_le32((pp->sg_tbl_dma >> 16) >> 16);
1081 pp->crqb[in_index].ctrl_flags = cpu_to_le16(flags);
1083 cw = &pp->crqb[in_index].ata_cmd[0];
1086 /* Sadly, the CRQB cannot accomodate all registers--there are
1087 * only 11 bytes...so we must pick and choose required
1088 * registers based on the command. So, we drop feature and
1089 * hob_feature for [RW] DMA commands, but they are needed for
1090 * NCQ. NCQ will drop hob_nsect.
1092 switch (tf->command) {
1094 case ATA_CMD_READ_EXT:
1096 case ATA_CMD_WRITE_EXT:
1097 case ATA_CMD_WRITE_FUA_EXT:
1098 mv_crqb_pack_cmd(cw++, tf->hob_nsect, ATA_REG_NSECT, 0);
1100 #ifdef LIBATA_NCQ /* FIXME: remove this line when NCQ added */
1101 case ATA_CMD_FPDMA_READ:
1102 case ATA_CMD_FPDMA_WRITE:
1103 mv_crqb_pack_cmd(cw++, tf->hob_feature, ATA_REG_FEATURE, 0);
1104 mv_crqb_pack_cmd(cw++, tf->feature, ATA_REG_FEATURE, 0);
1106 #endif /* FIXME: remove this line when NCQ added */
1108 /* The only other commands EDMA supports in non-queued and
1109 * non-NCQ mode are: [RW] STREAM DMA and W DMA FUA EXT, none
1110 * of which are defined/used by Linux. If we get here, this
1111 * driver needs work.
1113 * FIXME: modify libata to give qc_prep a return value and
1114 * return error here.
1116 BUG_ON(tf->command);
1119 mv_crqb_pack_cmd(cw++, tf->nsect, ATA_REG_NSECT, 0);
1120 mv_crqb_pack_cmd(cw++, tf->hob_lbal, ATA_REG_LBAL, 0);
1121 mv_crqb_pack_cmd(cw++, tf->lbal, ATA_REG_LBAL, 0);
1122 mv_crqb_pack_cmd(cw++, tf->hob_lbam, ATA_REG_LBAM, 0);
1123 mv_crqb_pack_cmd(cw++, tf->lbam, ATA_REG_LBAM, 0);
1124 mv_crqb_pack_cmd(cw++, tf->hob_lbah, ATA_REG_LBAH, 0);
1125 mv_crqb_pack_cmd(cw++, tf->lbah, ATA_REG_LBAH, 0);
1126 mv_crqb_pack_cmd(cw++, tf->device, ATA_REG_DEVICE, 0);
1127 mv_crqb_pack_cmd(cw++, tf->command, ATA_REG_CMD, 1); /* last */
1129 if (!(qc->flags & ATA_QCFLAG_DMAMAP))
1135 * mv_qc_prep_iie - Host specific command preparation.
1136 * @qc: queued command to prepare
1138 * This routine simply redirects to the general purpose routine
1139 * if command is not DMA. Else, it handles prep of the CRQB
1140 * (command request block), does some sanity checking, and calls
1141 * the SG load routine.
1144 * Inherited from caller.
1146 static void mv_qc_prep_iie(struct ata_queued_cmd *qc)
1148 struct ata_port *ap = qc->ap;
1149 struct mv_port_priv *pp = ap->private_data;
1150 struct mv_crqb_iie *crqb;
1151 struct ata_taskfile *tf;
1155 if (ATA_PROT_DMA != qc->tf.protocol)
1158 /* Fill in Gen IIE command request block
1160 if (!(qc->tf.flags & ATA_TFLAG_WRITE))
1161 flags |= CRQB_FLAG_READ;
1163 WARN_ON(MV_MAX_Q_DEPTH <= qc->tag);
1164 flags |= qc->tag << CRQB_TAG_SHIFT;
1166 /* get current queue index from hardware */
1167 in_index = (readl(mv_ap_base(ap) + EDMA_REQ_Q_IN_PTR_OFS)
1168 >> EDMA_REQ_Q_PTR_SHIFT) & MV_MAX_Q_DEPTH_MASK;
1170 crqb = (struct mv_crqb_iie *) &pp->crqb[in_index];
1171 crqb->addr = cpu_to_le32(pp->sg_tbl_dma & 0xffffffff);
1172 crqb->addr_hi = cpu_to_le32((pp->sg_tbl_dma >> 16) >> 16);
1173 crqb->flags = cpu_to_le32(flags);
1176 crqb->ata_cmd[0] = cpu_to_le32(
1177 (tf->command << 16) |
1180 crqb->ata_cmd[1] = cpu_to_le32(
1186 crqb->ata_cmd[2] = cpu_to_le32(
1187 (tf->hob_lbal << 0) |
1188 (tf->hob_lbam << 8) |
1189 (tf->hob_lbah << 16) |
1190 (tf->hob_feature << 24)
1192 crqb->ata_cmd[3] = cpu_to_le32(
1194 (tf->hob_nsect << 8)
1197 if (!(qc->flags & ATA_QCFLAG_DMAMAP))
1203 * mv_qc_issue - Initiate a command to the host
1204 * @qc: queued command to start
1206 * This routine simply redirects to the general purpose routine
1207 * if command is not DMA. Else, it sanity checks our local
1208 * caches of the request producer/consumer indices then enables
1209 * DMA and bumps the request producer index.
1212 * Inherited from caller.
1214 static unsigned int mv_qc_issue(struct ata_queued_cmd *qc)
1216 void __iomem *port_mmio = mv_ap_base(qc->ap);
1217 struct mv_port_priv *pp = qc->ap->private_data;
1221 if (ATA_PROT_DMA != qc->tf.protocol) {
1222 /* We're about to send a non-EDMA capable command to the
1223 * port. Turn off EDMA so there won't be problems accessing
1224 * shadow block, etc registers.
1226 mv_stop_dma(qc->ap);
1227 return ata_qc_issue_prot(qc);
1230 in_ptr = readl(port_mmio + EDMA_REQ_Q_IN_PTR_OFS);
1231 in_index = (in_ptr >> EDMA_REQ_Q_PTR_SHIFT) & MV_MAX_Q_DEPTH_MASK;
1233 /* until we do queuing, the queue should be empty at this point */
1234 WARN_ON(in_index != ((readl(port_mmio + EDMA_REQ_Q_OUT_PTR_OFS)
1235 >> EDMA_REQ_Q_PTR_SHIFT) & MV_MAX_Q_DEPTH_MASK));
1237 in_index = mv_inc_q_index(in_index); /* now incr producer index */
1239 mv_start_dma(port_mmio, pp);
1241 /* and write the request in pointer to kick the EDMA to life */
1242 in_ptr &= EDMA_REQ_Q_BASE_LO_MASK;
1243 in_ptr |= in_index << EDMA_REQ_Q_PTR_SHIFT;
1244 writelfl(in_ptr, port_mmio + EDMA_REQ_Q_IN_PTR_OFS);
1250 * mv_get_crpb_status - get status from most recently completed cmd
1251 * @ap: ATA channel to manipulate
1253 * This routine is for use when the port is in DMA mode, when it
1254 * will be using the CRPB (command response block) method of
1255 * returning command completion information. We check indices
1256 * are good, grab status, and bump the response consumer index to
1257 * prove that we're up to date.
1260 * Inherited from caller.
1262 static u8 mv_get_crpb_status(struct ata_port *ap)
1264 void __iomem *port_mmio = mv_ap_base(ap);
1265 struct mv_port_priv *pp = ap->private_data;
1270 out_ptr = readl(port_mmio + EDMA_RSP_Q_OUT_PTR_OFS);
1271 out_index = (out_ptr >> EDMA_RSP_Q_PTR_SHIFT) & MV_MAX_Q_DEPTH_MASK;
1273 ata_status = le16_to_cpu(pp->crpb[out_index].flags)
1274 >> CRPB_FLAG_STATUS_SHIFT;
1276 /* increment our consumer index... */
1277 out_index = mv_inc_q_index(out_index);
1279 /* and, until we do NCQ, there should only be 1 CRPB waiting */
1280 WARN_ON(out_index != ((readl(port_mmio + EDMA_RSP_Q_IN_PTR_OFS)
1281 >> EDMA_RSP_Q_PTR_SHIFT) & MV_MAX_Q_DEPTH_MASK));
1283 /* write out our inc'd consumer index so EDMA knows we're caught up */
1284 out_ptr &= EDMA_RSP_Q_BASE_LO_MASK;
1285 out_ptr |= out_index << EDMA_RSP_Q_PTR_SHIFT;
1286 writelfl(out_ptr, port_mmio + EDMA_RSP_Q_OUT_PTR_OFS);
1288 /* Return ATA status register for completed CRPB */
1293 * mv_err_intr - Handle error interrupts on the port
1294 * @ap: ATA channel to manipulate
1295 * @reset_allowed: bool: 0 == don't trigger from reset here
1297 * In most cases, just clear the interrupt and move on. However,
1298 * some cases require an eDMA reset, which is done right before
1299 * the COMRESET in mv_phy_reset(). The SERR case requires a
1300 * clear of pending errors in the SATA SERROR register. Finally,
1301 * if the port disabled DMA, update our cached copy to match.
1304 * Inherited from caller.
1306 static void mv_err_intr(struct ata_port *ap, int reset_allowed)
1308 void __iomem *port_mmio = mv_ap_base(ap);
1309 u32 edma_err_cause, serr = 0;
1311 edma_err_cause = readl(port_mmio + EDMA_ERR_IRQ_CAUSE_OFS);
1313 if (EDMA_ERR_SERR & edma_err_cause) {
1314 sata_scr_read(ap, SCR_ERROR, &serr);
1315 sata_scr_write_flush(ap, SCR_ERROR, serr);
1317 if (EDMA_ERR_SELF_DIS & edma_err_cause) {
1318 struct mv_port_priv *pp = ap->private_data;
1319 pp->pp_flags &= ~MV_PP_FLAG_EDMA_EN;
1321 DPRINTK(KERN_ERR "ata%u: port error; EDMA err cause: 0x%08x "
1322 "SERR: 0x%08x\n", ap->id, edma_err_cause, serr);
1324 /* Clear EDMA now that SERR cleanup done */
1325 writelfl(0, port_mmio + EDMA_ERR_IRQ_CAUSE_OFS);
1327 /* check for fatal here and recover if needed */
1328 if (reset_allowed && (EDMA_ERR_FATAL & edma_err_cause))
1329 mv_stop_and_reset(ap);
1333 * mv_host_intr - Handle all interrupts on the given host controller
1334 * @host: host specific structure
1335 * @relevant: port error bits relevant to this host controller
1336 * @hc: which host controller we're to look at
1338 * Read then write clear the HC interrupt status then walk each
1339 * port connected to the HC and see if it needs servicing. Port
1340 * success ints are reported in the HC interrupt status reg, the
1341 * port error ints are reported in the higher level main
1342 * interrupt status register and thus are passed in via the
1343 * 'relevant' argument.
1346 * Inherited from caller.
1348 static void mv_host_intr(struct ata_host *host, u32 relevant, unsigned int hc)
1350 void __iomem *mmio = host->mmio_base;
1351 void __iomem *hc_mmio = mv_hc_base(mmio, hc);
1352 struct ata_queued_cmd *qc;
1354 int shift, port, port0, hard_port, handled;
1355 unsigned int err_mask;
1360 port0 = MV_PORTS_PER_HC;
1363 /* we'll need the HC success int register in most cases */
1364 hc_irq_cause = readl(hc_mmio + HC_IRQ_CAUSE_OFS);
1366 writelfl(~hc_irq_cause, hc_mmio + HC_IRQ_CAUSE_OFS);
1369 VPRINTK("ENTER, hc%u relevant=0x%08x HC IRQ cause=0x%08x\n",
1370 hc,relevant,hc_irq_cause);
1372 for (port = port0; port < port0 + MV_PORTS_PER_HC; port++) {
1374 struct ata_port *ap = host->ports[port];
1375 struct mv_port_priv *pp = ap->private_data;
1377 hard_port = mv_hardport_from_port(port); /* range 0..3 */
1378 handled = 0; /* ensure ata_status is set if handled++ */
1380 /* Note that DEV_IRQ might happen spuriously during EDMA,
1381 * and should be ignored in such cases.
1382 * The cause of this is still under investigation.
1384 if (pp->pp_flags & MV_PP_FLAG_EDMA_EN) {
1385 /* EDMA: check for response queue interrupt */
1386 if ((CRPB_DMA_DONE << hard_port) & hc_irq_cause) {
1387 ata_status = mv_get_crpb_status(ap);
1391 /* PIO: check for device (drive) interrupt */
1392 if ((DEV_IRQ << hard_port) & hc_irq_cause) {
1393 ata_status = readb((void __iomem *)
1394 ap->ioaddr.status_addr);
1396 /* ignore spurious intr if drive still BUSY */
1397 if (ata_status & ATA_BUSY) {
1404 if (ap && (ap->flags & ATA_FLAG_DISABLED))
1407 err_mask = ac_err_mask(ata_status);
1409 shift = port << 1; /* (port * 2) */
1410 if (port >= MV_PORTS_PER_HC) {
1411 shift++; /* skip bit 8 in the HC Main IRQ reg */
1413 if ((PORT0_ERR << shift) & relevant) {
1415 err_mask |= AC_ERR_OTHER;
1420 qc = ata_qc_from_tag(ap, ap->active_tag);
1421 if (qc && (qc->flags & ATA_QCFLAG_ACTIVE)) {
1422 VPRINTK("port %u IRQ found for qc, "
1423 "ata_status 0x%x\n", port,ata_status);
1424 /* mark qc status appropriately */
1425 if (!(qc->tf.flags & ATA_TFLAG_POLLING)) {
1426 qc->err_mask |= err_mask;
1427 ata_qc_complete(qc);
1438 * @dev_instance: private data; in this case the host structure
1441 * Read the read only register to determine if any host
1442 * controllers have pending interrupts. If so, call lower level
1443 * routine to handle. Also check for PCI errors which are only
1447 * This routine holds the host lock while processing pending
1450 static irqreturn_t mv_interrupt(int irq, void *dev_instance)
1452 struct ata_host *host = dev_instance;
1453 unsigned int hc, handled = 0, n_hcs;
1454 void __iomem *mmio = host->mmio_base;
1455 struct mv_host_priv *hpriv;
1458 irq_stat = readl(mmio + HC_MAIN_IRQ_CAUSE_OFS);
1460 /* check the cases where we either have nothing pending or have read
1461 * a bogus register value which can indicate HW removal or PCI fault
1463 if (!irq_stat || (0xffffffffU == irq_stat)) {
1467 n_hcs = mv_get_hc_count(host->ports[0]->flags);
1468 spin_lock(&host->lock);
1470 for (hc = 0; hc < n_hcs; hc++) {
1471 u32 relevant = irq_stat & (HC0_IRQ_PEND << (hc * HC_SHIFT));
1473 mv_host_intr(host, relevant, hc);
1478 hpriv = host->private_data;
1479 if (IS_60XX(hpriv)) {
1480 /* deal with the interrupt coalescing bits */
1481 if (irq_stat & (TRAN_LO_DONE | TRAN_HI_DONE | PORTS_0_7_COAL_DONE)) {
1482 writelfl(0, mmio + MV_IRQ_COAL_CAUSE_LO);
1483 writelfl(0, mmio + MV_IRQ_COAL_CAUSE_HI);
1484 writelfl(0, mmio + MV_IRQ_COAL_CAUSE);
1488 if (PCI_ERR & irq_stat) {
1489 printk(KERN_ERR DRV_NAME ": PCI ERROR; PCI IRQ cause=0x%08x\n",
1490 readl(mmio + PCI_IRQ_CAUSE_OFS));
1492 DPRINTK("All regs @ PCI error\n");
1493 mv_dump_all_regs(mmio, -1, to_pci_dev(host->dev));
1495 writelfl(0, mmio + PCI_IRQ_CAUSE_OFS);
1498 spin_unlock(&host->lock);
1500 return IRQ_RETVAL(handled);
1503 static void __iomem *mv5_phy_base(void __iomem *mmio, unsigned int port)
1505 void __iomem *hc_mmio = mv_hc_base_from_port(mmio, port);
1506 unsigned long ofs = (mv_hardport_from_port(port) + 1) * 0x100UL;
1508 return hc_mmio + ofs;
1511 static unsigned int mv5_scr_offset(unsigned int sc_reg_in)
1515 switch (sc_reg_in) {
1519 ofs = sc_reg_in * sizeof(u32);
1528 static u32 mv5_scr_read(struct ata_port *ap, unsigned int sc_reg_in)
1530 void __iomem *mmio = mv5_phy_base(ap->host->mmio_base, ap->port_no);
1531 unsigned int ofs = mv5_scr_offset(sc_reg_in);
1533 if (ofs != 0xffffffffU)
1534 return readl(mmio + ofs);
1539 static void mv5_scr_write(struct ata_port *ap, unsigned int sc_reg_in, u32 val)
1541 void __iomem *mmio = mv5_phy_base(ap->host->mmio_base, ap->port_no);
1542 unsigned int ofs = mv5_scr_offset(sc_reg_in);
1544 if (ofs != 0xffffffffU)
1545 writelfl(val, mmio + ofs);
1548 static void mv5_reset_bus(struct pci_dev *pdev, void __iomem *mmio)
1553 pci_read_config_byte(pdev, PCI_REVISION_ID, &rev_id);
1555 early_5080 = (pdev->device == 0x5080) && (rev_id == 0);
1558 u32 tmp = readl(mmio + MV_PCI_EXP_ROM_BAR_CTL);
1560 writel(tmp, mmio + MV_PCI_EXP_ROM_BAR_CTL);
1563 mv_reset_pci_bus(pdev, mmio);
1566 static void mv5_reset_flash(struct mv_host_priv *hpriv, void __iomem *mmio)
1568 writel(0x0fcfffff, mmio + MV_FLASH_CTL);
1571 static void mv5_read_preamp(struct mv_host_priv *hpriv, int idx,
1574 void __iomem *phy_mmio = mv5_phy_base(mmio, idx);
1577 tmp = readl(phy_mmio + MV5_PHY_MODE);
1579 hpriv->signal[idx].pre = tmp & 0x1800; /* bits 12:11 */
1580 hpriv->signal[idx].amps = tmp & 0xe0; /* bits 7:5 */
1583 static void mv5_enable_leds(struct mv_host_priv *hpriv, void __iomem *mmio)
1587 writel(0, mmio + MV_GPIO_PORT_CTL);
1589 /* FIXME: handle MV_HP_ERRATA_50XXB2 errata */
1591 tmp = readl(mmio + MV_PCI_EXP_ROM_BAR_CTL);
1593 writel(tmp, mmio + MV_PCI_EXP_ROM_BAR_CTL);
1596 static void mv5_phy_errata(struct mv_host_priv *hpriv, void __iomem *mmio,
1599 void __iomem *phy_mmio = mv5_phy_base(mmio, port);
1600 const u32 mask = (1<<12) | (1<<11) | (1<<7) | (1<<6) | (1<<5);
1602 int fix_apm_sq = (hpriv->hp_flags & MV_HP_ERRATA_50XXB0);
1605 tmp = readl(phy_mmio + MV5_LT_MODE);
1607 writel(tmp, phy_mmio + MV5_LT_MODE);
1609 tmp = readl(phy_mmio + MV5_PHY_CTL);
1612 writel(tmp, phy_mmio + MV5_PHY_CTL);
1615 tmp = readl(phy_mmio + MV5_PHY_MODE);
1617 tmp |= hpriv->signal[port].pre;
1618 tmp |= hpriv->signal[port].amps;
1619 writel(tmp, phy_mmio + MV5_PHY_MODE);
1624 #define ZERO(reg) writel(0, port_mmio + (reg))
1625 static void mv5_reset_hc_port(struct mv_host_priv *hpriv, void __iomem *mmio,
1628 void __iomem *port_mmio = mv_port_base(mmio, port);
1630 writelfl(EDMA_DS, port_mmio + EDMA_CMD_OFS);
1632 mv_channel_reset(hpriv, mmio, port);
1634 ZERO(0x028); /* command */
1635 writel(0x11f, port_mmio + EDMA_CFG_OFS);
1636 ZERO(0x004); /* timer */
1637 ZERO(0x008); /* irq err cause */
1638 ZERO(0x00c); /* irq err mask */
1639 ZERO(0x010); /* rq bah */
1640 ZERO(0x014); /* rq inp */
1641 ZERO(0x018); /* rq outp */
1642 ZERO(0x01c); /* respq bah */
1643 ZERO(0x024); /* respq outp */
1644 ZERO(0x020); /* respq inp */
1645 ZERO(0x02c); /* test control */
1646 writel(0xbc, port_mmio + EDMA_IORDY_TMOUT);
1650 #define ZERO(reg) writel(0, hc_mmio + (reg))
1651 static void mv5_reset_one_hc(struct mv_host_priv *hpriv, void __iomem *mmio,
1654 void __iomem *hc_mmio = mv_hc_base(mmio, hc);
1662 tmp = readl(hc_mmio + 0x20);
1665 writel(tmp, hc_mmio + 0x20);
1669 static int mv5_reset_hc(struct mv_host_priv *hpriv, void __iomem *mmio,
1672 unsigned int hc, port;
1674 for (hc = 0; hc < n_hc; hc++) {
1675 for (port = 0; port < MV_PORTS_PER_HC; port++)
1676 mv5_reset_hc_port(hpriv, mmio,
1677 (hc * MV_PORTS_PER_HC) + port);
1679 mv5_reset_one_hc(hpriv, mmio, hc);
1686 #define ZERO(reg) writel(0, mmio + (reg))
1687 static void mv_reset_pci_bus(struct pci_dev *pdev, void __iomem *mmio)
1691 tmp = readl(mmio + MV_PCI_MODE);
1693 writel(tmp, mmio + MV_PCI_MODE);
1695 ZERO(MV_PCI_DISC_TIMER);
1696 ZERO(MV_PCI_MSI_TRIGGER);
1697 writel(0x000100ff, mmio + MV_PCI_XBAR_TMOUT);
1698 ZERO(HC_MAIN_IRQ_MASK_OFS);
1699 ZERO(MV_PCI_SERR_MASK);
1700 ZERO(PCI_IRQ_CAUSE_OFS);
1701 ZERO(PCI_IRQ_MASK_OFS);
1702 ZERO(MV_PCI_ERR_LOW_ADDRESS);
1703 ZERO(MV_PCI_ERR_HIGH_ADDRESS);
1704 ZERO(MV_PCI_ERR_ATTRIBUTE);
1705 ZERO(MV_PCI_ERR_COMMAND);
1709 static void mv6_reset_flash(struct mv_host_priv *hpriv, void __iomem *mmio)
1713 mv5_reset_flash(hpriv, mmio);
1715 tmp = readl(mmio + MV_GPIO_PORT_CTL);
1717 tmp |= (1 << 5) | (1 << 6);
1718 writel(tmp, mmio + MV_GPIO_PORT_CTL);
1722 * mv6_reset_hc - Perform the 6xxx global soft reset
1723 * @mmio: base address of the HBA
1725 * This routine only applies to 6xxx parts.
1728 * Inherited from caller.
1730 static int mv6_reset_hc(struct mv_host_priv *hpriv, void __iomem *mmio,
1733 void __iomem *reg = mmio + PCI_MAIN_CMD_STS_OFS;
1737 /* Following procedure defined in PCI "main command and status
1741 writel(t | STOP_PCI_MASTER, reg);
1743 for (i = 0; i < 1000; i++) {
1746 if (PCI_MASTER_EMPTY & t) {
1750 if (!(PCI_MASTER_EMPTY & t)) {
1751 printk(KERN_ERR DRV_NAME ": PCI master won't flush\n");
1759 writel(t | GLOB_SFT_RST, reg);
1762 } while (!(GLOB_SFT_RST & t) && (i-- > 0));
1764 if (!(GLOB_SFT_RST & t)) {
1765 printk(KERN_ERR DRV_NAME ": can't set global reset\n");
1770 /* clear reset and *reenable the PCI master* (not mentioned in spec) */
1773 writel(t & ~(GLOB_SFT_RST | STOP_PCI_MASTER), reg);
1776 } while ((GLOB_SFT_RST & t) && (i-- > 0));
1778 if (GLOB_SFT_RST & t) {
1779 printk(KERN_ERR DRV_NAME ": can't clear global reset\n");
1786 static void mv6_read_preamp(struct mv_host_priv *hpriv, int idx,
1789 void __iomem *port_mmio;
1792 tmp = readl(mmio + MV_RESET_CFG);
1793 if ((tmp & (1 << 0)) == 0) {
1794 hpriv->signal[idx].amps = 0x7 << 8;
1795 hpriv->signal[idx].pre = 0x1 << 5;
1799 port_mmio = mv_port_base(mmio, idx);
1800 tmp = readl(port_mmio + PHY_MODE2);
1802 hpriv->signal[idx].amps = tmp & 0x700; /* bits 10:8 */
1803 hpriv->signal[idx].pre = tmp & 0xe0; /* bits 7:5 */
1806 static void mv6_enable_leds(struct mv_host_priv *hpriv, void __iomem *mmio)
1808 writel(0x00000060, mmio + MV_GPIO_PORT_CTL);
1811 static void mv6_phy_errata(struct mv_host_priv *hpriv, void __iomem *mmio,
1814 void __iomem *port_mmio = mv_port_base(mmio, port);
1816 u32 hp_flags = hpriv->hp_flags;
1818 hp_flags & (MV_HP_ERRATA_60X1B2 | MV_HP_ERRATA_60X1C0);
1820 hp_flags & (MV_HP_ERRATA_60X1B2 | MV_HP_ERRATA_60X1C0);
1823 if (fix_phy_mode2) {
1824 m2 = readl(port_mmio + PHY_MODE2);
1827 writel(m2, port_mmio + PHY_MODE2);
1831 m2 = readl(port_mmio + PHY_MODE2);
1832 m2 &= ~((1 << 16) | (1 << 31));
1833 writel(m2, port_mmio + PHY_MODE2);
1838 /* who knows what this magic does */
1839 tmp = readl(port_mmio + PHY_MODE3);
1842 writel(tmp, port_mmio + PHY_MODE3);
1844 if (fix_phy_mode4) {
1847 m4 = readl(port_mmio + PHY_MODE4);
1849 if (hp_flags & MV_HP_ERRATA_60X1B2)
1850 tmp = readl(port_mmio + 0x310);
1852 m4 = (m4 & ~(1 << 1)) | (1 << 0);
1854 writel(m4, port_mmio + PHY_MODE4);
1856 if (hp_flags & MV_HP_ERRATA_60X1B2)
1857 writel(tmp, port_mmio + 0x310);
1860 /* Revert values of pre-emphasis and signal amps to the saved ones */
1861 m2 = readl(port_mmio + PHY_MODE2);
1863 m2 &= ~MV_M2_PREAMP_MASK;
1864 m2 |= hpriv->signal[port].amps;
1865 m2 |= hpriv->signal[port].pre;
1868 /* according to mvSata 3.6.1, some IIE values are fixed */
1869 if (IS_GEN_IIE(hpriv)) {
1874 writel(m2, port_mmio + PHY_MODE2);
1877 static void mv_channel_reset(struct mv_host_priv *hpriv, void __iomem *mmio,
1878 unsigned int port_no)
1880 void __iomem *port_mmio = mv_port_base(mmio, port_no);
1882 writelfl(ATA_RST, port_mmio + EDMA_CMD_OFS);
1884 if (IS_60XX(hpriv)) {
1885 u32 ifctl = readl(port_mmio + SATA_INTERFACE_CTL);
1886 ifctl |= (1 << 7); /* enable gen2i speed */
1887 ifctl = (ifctl & 0xfff) | 0x9b1000; /* from chip spec */
1888 writelfl(ifctl, port_mmio + SATA_INTERFACE_CTL);
1891 udelay(25); /* allow reset propagation */
1893 /* Spec never mentions clearing the bit. Marvell's driver does
1894 * clear the bit, however.
1896 writelfl(0, port_mmio + EDMA_CMD_OFS);
1898 hpriv->ops->phy_errata(hpriv, mmio, port_no);
1904 static void mv_stop_and_reset(struct ata_port *ap)
1906 struct mv_host_priv *hpriv = ap->host->private_data;
1907 void __iomem *mmio = ap->host->mmio_base;
1911 mv_channel_reset(hpriv, mmio, ap->port_no);
1913 __mv_phy_reset(ap, 0);
1916 static inline void __msleep(unsigned int msec, int can_sleep)
1925 * __mv_phy_reset - Perform eDMA reset followed by COMRESET
1926 * @ap: ATA channel to manipulate
1928 * Part of this is taken from __sata_phy_reset and modified to
1929 * not sleep since this routine gets called from interrupt level.
1932 * Inherited from caller. This is coded to safe to call at
1933 * interrupt level, i.e. it does not sleep.
1935 static void __mv_phy_reset(struct ata_port *ap, int can_sleep)
1937 struct mv_port_priv *pp = ap->private_data;
1938 struct mv_host_priv *hpriv = ap->host->private_data;
1939 void __iomem *port_mmio = mv_ap_base(ap);
1940 struct ata_taskfile tf;
1941 struct ata_device *dev = &ap->device[0];
1942 unsigned long timeout;
1946 VPRINTK("ENTER, port %u, mmio 0x%p\n", ap->port_no, port_mmio);
1948 DPRINTK("S-regs after ATA_RST: SStat 0x%08x SErr 0x%08x "
1949 "SCtrl 0x%08x\n", mv_scr_read(ap, SCR_STATUS),
1950 mv_scr_read(ap, SCR_ERROR), mv_scr_read(ap, SCR_CONTROL));
1952 /* Issue COMRESET via SControl */
1954 sata_scr_write_flush(ap, SCR_CONTROL, 0x301);
1955 __msleep(1, can_sleep);
1957 sata_scr_write_flush(ap, SCR_CONTROL, 0x300);
1958 __msleep(20, can_sleep);
1960 timeout = jiffies + msecs_to_jiffies(200);
1962 sata_scr_read(ap, SCR_STATUS, &sstatus);
1963 if (((sstatus & 0x3) == 3) || ((sstatus & 0x3) == 0))
1966 __msleep(1, can_sleep);
1967 } while (time_before(jiffies, timeout));
1969 /* work around errata */
1970 if (IS_60XX(hpriv) &&
1971 (sstatus != 0x0) && (sstatus != 0x113) && (sstatus != 0x123) &&
1973 goto comreset_retry;
1975 DPRINTK("S-regs after PHY wake: SStat 0x%08x SErr 0x%08x "
1976 "SCtrl 0x%08x\n", mv_scr_read(ap, SCR_STATUS),
1977 mv_scr_read(ap, SCR_ERROR), mv_scr_read(ap, SCR_CONTROL));
1979 if (ata_port_online(ap)) {
1982 sata_scr_read(ap, SCR_STATUS, &sstatus);
1983 ata_port_printk(ap, KERN_INFO,
1984 "no device found (phy stat %08x)\n", sstatus);
1985 ata_port_disable(ap);
1988 ap->cbl = ATA_CBL_SATA;
1990 /* even after SStatus reflects that device is ready,
1991 * it seems to take a while for link to be fully
1992 * established (and thus Status no longer 0x80/0x7F),
1993 * so we poll a bit for that, here.
1997 u8 drv_stat = ata_check_status(ap);
1998 if ((drv_stat != 0x80) && (drv_stat != 0x7f))
2000 __msleep(500, can_sleep);
2005 tf.lbah = readb((void __iomem *) ap->ioaddr.lbah_addr);
2006 tf.lbam = readb((void __iomem *) ap->ioaddr.lbam_addr);
2007 tf.lbal = readb((void __iomem *) ap->ioaddr.lbal_addr);
2008 tf.nsect = readb((void __iomem *) ap->ioaddr.nsect_addr);
2010 dev->class = ata_dev_classify(&tf);
2011 if (!ata_dev_enabled(dev)) {
2012 VPRINTK("Port disabled post-sig: No device present.\n");
2013 ata_port_disable(ap);
2016 writelfl(0, port_mmio + EDMA_ERR_IRQ_CAUSE_OFS);
2018 pp->pp_flags &= ~MV_PP_FLAG_EDMA_EN;
2023 static void mv_phy_reset(struct ata_port *ap)
2025 __mv_phy_reset(ap, 1);
2029 * mv_eng_timeout - Routine called by libata when SCSI times out I/O
2030 * @ap: ATA channel to manipulate
2032 * Intent is to clear all pending error conditions, reset the
2033 * chip/bus, fail the command, and move on.
2036 * This routine holds the host lock while failing the command.
2038 static void mv_eng_timeout(struct ata_port *ap)
2040 struct ata_queued_cmd *qc;
2041 unsigned long flags;
2043 ata_port_printk(ap, KERN_ERR, "Entering mv_eng_timeout\n");
2044 DPRINTK("All regs @ start of eng_timeout\n");
2045 mv_dump_all_regs(ap->host->mmio_base, ap->port_no,
2046 to_pci_dev(ap->host->dev));
2048 qc = ata_qc_from_tag(ap, ap->active_tag);
2049 printk(KERN_ERR "mmio_base %p ap %p qc %p scsi_cmnd %p &cmnd %p\n",
2050 ap->host->mmio_base, ap, qc, qc->scsicmd, &qc->scsicmd->cmnd);
2052 spin_lock_irqsave(&ap->host->lock, flags);
2054 mv_stop_and_reset(ap);
2055 spin_unlock_irqrestore(&ap->host->lock, flags);
2057 WARN_ON(!(qc->flags & ATA_QCFLAG_ACTIVE));
2058 if (qc->flags & ATA_QCFLAG_ACTIVE) {
2059 qc->err_mask |= AC_ERR_TIMEOUT;
2060 ata_eh_qc_complete(qc);
2065 * mv_port_init - Perform some early initialization on a single port.
2066 * @port: libata data structure storing shadow register addresses
2067 * @port_mmio: base address of the port
2069 * Initialize shadow register mmio addresses, clear outstanding
2070 * interrupts on the port, and unmask interrupts for the future
2071 * start of the port.
2074 * Inherited from caller.
2076 static void mv_port_init(struct ata_ioports *port, void __iomem *port_mmio)
2078 unsigned long shd_base = (unsigned long) port_mmio + SHD_BLK_OFS;
2081 /* PIO related setup
2083 port->data_addr = shd_base + (sizeof(u32) * ATA_REG_DATA);
2085 port->feature_addr = shd_base + (sizeof(u32) * ATA_REG_ERR);
2086 port->nsect_addr = shd_base + (sizeof(u32) * ATA_REG_NSECT);
2087 port->lbal_addr = shd_base + (sizeof(u32) * ATA_REG_LBAL);
2088 port->lbam_addr = shd_base + (sizeof(u32) * ATA_REG_LBAM);
2089 port->lbah_addr = shd_base + (sizeof(u32) * ATA_REG_LBAH);
2090 port->device_addr = shd_base + (sizeof(u32) * ATA_REG_DEVICE);
2092 port->command_addr = shd_base + (sizeof(u32) * ATA_REG_STATUS);
2093 /* special case: control/altstatus doesn't have ATA_REG_ address */
2094 port->altstatus_addr = port->ctl_addr = shd_base + SHD_CTL_AST_OFS;
2097 port->cmd_addr = port->bmdma_addr = port->scr_addr = 0;
2099 /* Clear any currently outstanding port interrupt conditions */
2100 serr_ofs = mv_scr_offset(SCR_ERROR);
2101 writelfl(readl(port_mmio + serr_ofs), port_mmio + serr_ofs);
2102 writelfl(0, port_mmio + EDMA_ERR_IRQ_CAUSE_OFS);
2104 /* unmask all EDMA error interrupts */
2105 writelfl(~0, port_mmio + EDMA_ERR_IRQ_MASK_OFS);
2107 VPRINTK("EDMA cfg=0x%08x EDMA IRQ err cause/mask=0x%08x/0x%08x\n",
2108 readl(port_mmio + EDMA_CFG_OFS),
2109 readl(port_mmio + EDMA_ERR_IRQ_CAUSE_OFS),
2110 readl(port_mmio + EDMA_ERR_IRQ_MASK_OFS));
2113 static int mv_chip_id(struct pci_dev *pdev, struct mv_host_priv *hpriv,
2114 unsigned int board_idx)
2117 u32 hp_flags = hpriv->hp_flags;
2119 pci_read_config_byte(pdev, PCI_REVISION_ID, &rev_id);
2123 hpriv->ops = &mv5xxx_ops;
2124 hp_flags |= MV_HP_50XX;
2128 hp_flags |= MV_HP_ERRATA_50XXB0;
2131 hp_flags |= MV_HP_ERRATA_50XXB2;
2134 dev_printk(KERN_WARNING, &pdev->dev,
2135 "Applying 50XXB2 workarounds to unknown rev\n");
2136 hp_flags |= MV_HP_ERRATA_50XXB2;
2143 hpriv->ops = &mv5xxx_ops;
2144 hp_flags |= MV_HP_50XX;
2148 hp_flags |= MV_HP_ERRATA_50XXB0;
2151 hp_flags |= MV_HP_ERRATA_50XXB2;
2154 dev_printk(KERN_WARNING, &pdev->dev,
2155 "Applying B2 workarounds to unknown rev\n");
2156 hp_flags |= MV_HP_ERRATA_50XXB2;
2163 hpriv->ops = &mv6xxx_ops;
2167 hp_flags |= MV_HP_ERRATA_60X1B2;
2170 hp_flags |= MV_HP_ERRATA_60X1C0;
2173 dev_printk(KERN_WARNING, &pdev->dev,
2174 "Applying B2 workarounds to unknown rev\n");
2175 hp_flags |= MV_HP_ERRATA_60X1B2;
2182 hpriv->ops = &mv6xxx_ops;
2184 hp_flags |= MV_HP_GEN_IIE;
2188 hp_flags |= MV_HP_ERRATA_XX42A0;
2191 hp_flags |= MV_HP_ERRATA_60X1C0;
2194 dev_printk(KERN_WARNING, &pdev->dev,
2195 "Applying 60X1C0 workarounds to unknown rev\n");
2196 hp_flags |= MV_HP_ERRATA_60X1C0;
2202 printk(KERN_ERR DRV_NAME ": BUG: invalid board index %u\n", board_idx);
2206 hpriv->hp_flags = hp_flags;
2212 * mv_init_host - Perform some early initialization of the host.
2213 * @pdev: host PCI device
2214 * @probe_ent: early data struct representing the host
2216 * If possible, do an early global reset of the host. Then do
2217 * our port init and clear/unmask all/relevant host interrupts.
2220 * Inherited from caller.
2222 static int mv_init_host(struct pci_dev *pdev, struct ata_probe_ent *probe_ent,
2223 unsigned int board_idx)
2225 int rc = 0, n_hc, port, hc;
2226 void __iomem *mmio = probe_ent->mmio_base;
2227 struct mv_host_priv *hpriv = probe_ent->private_data;
2229 /* global interrupt mask */
2230 writel(0, mmio + HC_MAIN_IRQ_MASK_OFS);
2232 rc = mv_chip_id(pdev, hpriv, board_idx);
2236 n_hc = mv_get_hc_count(probe_ent->port_flags);
2237 probe_ent->n_ports = MV_PORTS_PER_HC * n_hc;
2239 for (port = 0; port < probe_ent->n_ports; port++)
2240 hpriv->ops->read_preamp(hpriv, port, mmio);
2242 rc = hpriv->ops->reset_hc(hpriv, mmio, n_hc);
2246 hpriv->ops->reset_flash(hpriv, mmio);
2247 hpriv->ops->reset_bus(pdev, mmio);
2248 hpriv->ops->enable_leds(hpriv, mmio);
2250 for (port = 0; port < probe_ent->n_ports; port++) {
2251 if (IS_60XX(hpriv)) {
2252 void __iomem *port_mmio = mv_port_base(mmio, port);
2254 u32 ifctl = readl(port_mmio + SATA_INTERFACE_CTL);
2255 ifctl |= (1 << 7); /* enable gen2i speed */
2256 ifctl = (ifctl & 0xfff) | 0x9b1000; /* from chip spec */
2257 writelfl(ifctl, port_mmio + SATA_INTERFACE_CTL);
2260 hpriv->ops->phy_errata(hpriv, mmio, port);
2263 for (port = 0; port < probe_ent->n_ports; port++) {
2264 void __iomem *port_mmio = mv_port_base(mmio, port);
2265 mv_port_init(&probe_ent->port[port], port_mmio);
2268 for (hc = 0; hc < n_hc; hc++) {
2269 void __iomem *hc_mmio = mv_hc_base(mmio, hc);
2271 VPRINTK("HC%i: HC config=0x%08x HC IRQ cause "
2272 "(before clear)=0x%08x\n", hc,
2273 readl(hc_mmio + HC_CFG_OFS),
2274 readl(hc_mmio + HC_IRQ_CAUSE_OFS));
2276 /* Clear any currently outstanding hc interrupt conditions */
2277 writelfl(0, hc_mmio + HC_IRQ_CAUSE_OFS);
2280 /* Clear any currently outstanding host interrupt conditions */
2281 writelfl(0, mmio + PCI_IRQ_CAUSE_OFS);
2283 /* and unmask interrupt generation for host regs */
2284 writelfl(PCI_UNMASK_ALL_IRQS, mmio + PCI_IRQ_MASK_OFS);
2285 writelfl(~HC_MAIN_MASKED_IRQS, mmio + HC_MAIN_IRQ_MASK_OFS);
2287 VPRINTK("HC MAIN IRQ cause/mask=0x%08x/0x%08x "
2288 "PCI int cause/mask=0x%08x/0x%08x\n",
2289 readl(mmio + HC_MAIN_IRQ_CAUSE_OFS),
2290 readl(mmio + HC_MAIN_IRQ_MASK_OFS),
2291 readl(mmio + PCI_IRQ_CAUSE_OFS),
2292 readl(mmio + PCI_IRQ_MASK_OFS));
2299 * mv_print_info - Dump key info to kernel log for perusal.
2300 * @probe_ent: early data struct representing the host
2302 * FIXME: complete this.
2305 * Inherited from caller.
2307 static void mv_print_info(struct ata_probe_ent *probe_ent)
2309 struct pci_dev *pdev = to_pci_dev(probe_ent->dev);
2310 struct mv_host_priv *hpriv = probe_ent->private_data;
2314 /* Use this to determine the HW stepping of the chip so we know
2315 * what errata to workaround
2317 pci_read_config_byte(pdev, PCI_REVISION_ID, &rev_id);
2319 pci_read_config_byte(pdev, PCI_CLASS_DEVICE, &scc);
2322 else if (scc == 0x01)
2327 dev_printk(KERN_INFO, &pdev->dev,
2328 "%u slots %u ports %s mode IRQ via %s\n",
2329 (unsigned)MV_MAX_Q_DEPTH, probe_ent->n_ports,
2330 scc_s, (MV_HP_FLAG_MSI & hpriv->hp_flags) ? "MSI" : "INTx");
2334 * mv_init_one - handle a positive probe of a Marvell host
2335 * @pdev: PCI device found
2336 * @ent: PCI device ID entry for the matched host
2339 * Inherited from caller.
2341 static int mv_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
2343 static int printed_version = 0;
2344 struct ata_probe_ent *probe_ent = NULL;
2345 struct mv_host_priv *hpriv;
2346 unsigned int board_idx = (unsigned int)ent->driver_data;
2347 void __iomem *mmio_base;
2348 int pci_dev_busy = 0, rc;
2350 if (!printed_version++)
2351 dev_printk(KERN_INFO, &pdev->dev, "version " DRV_VERSION "\n");
2353 rc = pci_enable_device(pdev);
2357 pci_set_master(pdev);
2359 rc = pci_request_regions(pdev, DRV_NAME);
2365 probe_ent = kmalloc(sizeof(*probe_ent), GFP_KERNEL);
2366 if (probe_ent == NULL) {
2368 goto err_out_regions;
2371 memset(probe_ent, 0, sizeof(*probe_ent));
2372 probe_ent->dev = pci_dev_to_dev(pdev);
2373 INIT_LIST_HEAD(&probe_ent->node);
2375 mmio_base = pci_iomap(pdev, MV_PRIMARY_BAR, 0);
2376 if (mmio_base == NULL) {
2378 goto err_out_free_ent;
2381 hpriv = kmalloc(sizeof(*hpriv), GFP_KERNEL);
2384 goto err_out_iounmap;
2386 memset(hpriv, 0, sizeof(*hpriv));
2388 probe_ent->sht = mv_port_info[board_idx].sht;
2389 probe_ent->port_flags = mv_port_info[board_idx].flags;
2390 probe_ent->pio_mask = mv_port_info[board_idx].pio_mask;
2391 probe_ent->udma_mask = mv_port_info[board_idx].udma_mask;
2392 probe_ent->port_ops = mv_port_info[board_idx].port_ops;
2394 probe_ent->irq = pdev->irq;
2395 probe_ent->irq_flags = IRQF_SHARED;
2396 probe_ent->mmio_base = mmio_base;
2397 probe_ent->private_data = hpriv;
2399 /* initialize adapter */
2400 rc = mv_init_host(pdev, probe_ent, board_idx);
2405 /* Enable interrupts */
2406 if (msi && pci_enable_msi(pdev) == 0) {
2407 hpriv->hp_flags |= MV_HP_FLAG_MSI;
2412 mv_dump_pci_cfg(pdev, 0x68);
2413 mv_print_info(probe_ent);
2415 if (ata_device_add(probe_ent) == 0) {
2416 rc = -ENODEV; /* No devices discovered */
2417 goto err_out_dev_add;
2424 if (MV_HP_FLAG_MSI & hpriv->hp_flags) {
2425 pci_disable_msi(pdev);
2432 pci_iounmap(pdev, mmio_base);
2436 pci_release_regions(pdev);
2438 if (!pci_dev_busy) {
2439 pci_disable_device(pdev);
2445 static int __init mv_init(void)
2447 return pci_register_driver(&mv_pci_driver);
2450 static void __exit mv_exit(void)
2452 pci_unregister_driver(&mv_pci_driver);
2455 MODULE_AUTHOR("Brett Russ");
2456 MODULE_DESCRIPTION("SCSI low-level driver for Marvell SATA controllers");
2457 MODULE_LICENSE("GPL");
2458 MODULE_DEVICE_TABLE(pci, mv_pci_tbl);
2459 MODULE_VERSION(DRV_VERSION);
2461 module_param(msi, int, 0444);
2462 MODULE_PARM_DESC(msi, "Enable use of PCI MSI (0=off, 1=on)");
2464 module_init(mv_init);
2465 module_exit(mv_exit);