2 * sata_mv.c - Marvell SATA support
4 * Copyright 2005: EMC Corporation, all rights reserved.
6 * Please ALWAYS copy linux-ide@vger.kernel.org on emails.
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; version 2 of the License.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23 #include <linux/kernel.h>
24 #include <linux/module.h>
25 #include <linux/pci.h>
26 #include <linux/init.h>
27 #include <linux/blkdev.h>
28 #include <linux/delay.h>
29 #include <linux/interrupt.h>
30 #include <linux/sched.h>
31 #include <linux/dma-mapping.h>
32 #include <linux/device.h>
33 #include <scsi/scsi_host.h>
34 #include <scsi/scsi_cmnd.h>
35 #include <linux/libata.h>
38 #define DRV_NAME "sata_mv"
39 #define DRV_VERSION "0.25"
42 /* BAR's are enumerated in terms of pci_resource_start() terms */
43 MV_PRIMARY_BAR = 0, /* offset 0x10: memory space */
44 MV_IO_BAR = 2, /* offset 0x18: IO space */
45 MV_MISC_BAR = 3, /* offset 0x1c: FLASH, NVRAM, SRAM */
47 MV_MAJOR_REG_AREA_SZ = 0x10000, /* 64KB */
48 MV_MINOR_REG_AREA_SZ = 0x2000, /* 8KB */
51 MV_IRQ_COAL_REG_BASE = 0x18000, /* 6xxx part only */
52 MV_SATAHC0_REG_BASE = 0x20000,
53 MV_FLASH_CTL = 0x1046c,
54 MV_GPIO_PORT_CTL = 0x104f0,
55 MV_RESET_CFG = 0x180d8,
57 MV_PCI_REG_SZ = MV_MAJOR_REG_AREA_SZ,
58 MV_SATAHC_REG_SZ = MV_MAJOR_REG_AREA_SZ,
59 MV_SATAHC_ARBTR_REG_SZ = MV_MINOR_REG_AREA_SZ, /* arbiter */
60 MV_PORT_REG_SZ = MV_MINOR_REG_AREA_SZ,
62 MV_USE_Q_DEPTH = ATA_DEF_QUEUE,
65 MV_MAX_Q_DEPTH_MASK = MV_MAX_Q_DEPTH - 1,
67 /* CRQB needs alignment on a 1KB boundary. Size == 1KB
68 * CRPB needs alignment on a 256B boundary. Size == 256B
69 * SG count of 176 leads to MV_PORT_PRIV_DMA_SZ == 4KB
70 * ePRD (SG) entries need alignment on a 16B boundary. Size == 16B
72 MV_CRQB_Q_SZ = (32 * MV_MAX_Q_DEPTH),
73 MV_CRPB_Q_SZ = (8 * MV_MAX_Q_DEPTH),
75 MV_SG_TBL_SZ = (16 * MV_MAX_SG_CT),
76 MV_PORT_PRIV_DMA_SZ = (MV_CRQB_Q_SZ + MV_CRPB_Q_SZ + MV_SG_TBL_SZ),
79 /* == (port / MV_PORTS_PER_HC) to determine HC from 0-7 port */
81 /* == (port % MV_PORTS_PER_HC) to determine hard port from 0-7 port */
85 MV_FLAG_DUAL_HC = (1 << 30), /* two SATA Host Controllers */
86 MV_FLAG_IRQ_COALESCE = (1 << 29), /* IRQ coalescing capability */
87 MV_COMMON_FLAGS = (ATA_FLAG_SATA | ATA_FLAG_NO_LEGACY |
88 ATA_FLAG_SATA_RESET | ATA_FLAG_MMIO),
89 MV_6XXX_FLAGS = MV_FLAG_IRQ_COALESCE,
91 CRQB_FLAG_READ = (1 << 0),
93 CRQB_CMD_ADDR_SHIFT = 8,
94 CRQB_CMD_CS = (0x2 << 11),
95 CRQB_CMD_LAST = (1 << 15),
97 CRPB_FLAG_STATUS_SHIFT = 8,
99 EPRD_FLAG_END_OF_TBL = (1 << 31),
101 /* PCI interface registers */
103 PCI_COMMAND_OFS = 0xc00,
105 PCI_MAIN_CMD_STS_OFS = 0xd30,
106 STOP_PCI_MASTER = (1 << 2),
107 PCI_MASTER_EMPTY = (1 << 3),
108 GLOB_SFT_RST = (1 << 4),
111 MV_PCI_EXP_ROM_BAR_CTL = 0xd2c,
112 MV_PCI_DISC_TIMER = 0xd04,
113 MV_PCI_MSI_TRIGGER = 0xc38,
114 MV_PCI_SERR_MASK = 0xc28,
115 MV_PCI_XBAR_TMOUT = 0x1d04,
116 MV_PCI_ERR_LOW_ADDRESS = 0x1d40,
117 MV_PCI_ERR_HIGH_ADDRESS = 0x1d44,
118 MV_PCI_ERR_ATTRIBUTE = 0x1d48,
119 MV_PCI_ERR_COMMAND = 0x1d50,
121 PCI_IRQ_CAUSE_OFS = 0x1d58,
122 PCI_IRQ_MASK_OFS = 0x1d5c,
123 PCI_UNMASK_ALL_IRQS = 0x7fffff, /* bits 22-0 */
125 HC_MAIN_IRQ_CAUSE_OFS = 0x1d60,
126 HC_MAIN_IRQ_MASK_OFS = 0x1d64,
127 PORT0_ERR = (1 << 0), /* shift by port # */
128 PORT0_DONE = (1 << 1), /* shift by port # */
129 HC0_IRQ_PEND = 0x1ff, /* bits 0-8 = HC0's ports */
130 HC_SHIFT = 9, /* bits 9-17 = HC1's ports */
132 TRAN_LO_DONE = (1 << 19), /* 6xxx: IRQ coalescing */
133 TRAN_HI_DONE = (1 << 20), /* 6xxx: IRQ coalescing */
134 PORTS_0_7_COAL_DONE = (1 << 21), /* 6xxx: IRQ coalescing */
135 GPIO_INT = (1 << 22),
136 SELF_INT = (1 << 23),
137 TWSI_INT = (1 << 24),
138 HC_MAIN_RSVD = (0x7f << 25), /* bits 31-25 */
139 HC_MAIN_MASKED_IRQS = (TRAN_LO_DONE | TRAN_HI_DONE |
140 PORTS_0_7_COAL_DONE | GPIO_INT | TWSI_INT |
143 /* SATAHC registers */
146 HC_IRQ_CAUSE_OFS = 0x14,
147 CRPB_DMA_DONE = (1 << 0), /* shift by port # */
148 HC_IRQ_COAL = (1 << 4), /* IRQ coalescing */
149 DEV_IRQ = (1 << 8), /* shift by port # */
151 /* Shadow block registers */
153 SHD_CTL_AST_OFS = 0x20, /* ofs from SHD_BLK_OFS */
156 SATA_STATUS_OFS = 0x300, /* ctrl, err regs follow status */
157 SATA_ACTIVE_OFS = 0x350,
161 SATA_INTERFACE_CTL = 0x050,
163 MV_M2_PREAMP_MASK = 0x7e0,
167 EDMA_CFG_Q_DEPTH = 0, /* queueing disabled */
168 EDMA_CFG_NCQ = (1 << 5),
169 EDMA_CFG_NCQ_GO_ON_ERR = (1 << 14), /* continue on error */
170 EDMA_CFG_RD_BRST_EXT = (1 << 11), /* read burst 512B */
171 EDMA_CFG_WR_BUFF_LEN = (1 << 13), /* write buffer 512B */
173 EDMA_ERR_IRQ_CAUSE_OFS = 0x8,
174 EDMA_ERR_IRQ_MASK_OFS = 0xc,
175 EDMA_ERR_D_PAR = (1 << 0),
176 EDMA_ERR_PRD_PAR = (1 << 1),
177 EDMA_ERR_DEV = (1 << 2),
178 EDMA_ERR_DEV_DCON = (1 << 3),
179 EDMA_ERR_DEV_CON = (1 << 4),
180 EDMA_ERR_SERR = (1 << 5),
181 EDMA_ERR_SELF_DIS = (1 << 7),
182 EDMA_ERR_BIST_ASYNC = (1 << 8),
183 EDMA_ERR_CRBQ_PAR = (1 << 9),
184 EDMA_ERR_CRPB_PAR = (1 << 10),
185 EDMA_ERR_INTRL_PAR = (1 << 11),
186 EDMA_ERR_IORDY = (1 << 12),
187 EDMA_ERR_LNK_CTRL_RX = (0xf << 13),
188 EDMA_ERR_LNK_CTRL_RX_2 = (1 << 15),
189 EDMA_ERR_LNK_DATA_RX = (0xf << 17),
190 EDMA_ERR_LNK_CTRL_TX = (0x1f << 21),
191 EDMA_ERR_LNK_DATA_TX = (0x1f << 26),
192 EDMA_ERR_TRANS_PROTO = (1 << 31),
193 EDMA_ERR_FATAL = (EDMA_ERR_D_PAR | EDMA_ERR_PRD_PAR |
194 EDMA_ERR_DEV_DCON | EDMA_ERR_CRBQ_PAR |
195 EDMA_ERR_CRPB_PAR | EDMA_ERR_INTRL_PAR |
196 EDMA_ERR_IORDY | EDMA_ERR_LNK_CTRL_RX_2 |
197 EDMA_ERR_LNK_DATA_RX |
198 EDMA_ERR_LNK_DATA_TX |
199 EDMA_ERR_TRANS_PROTO),
201 EDMA_REQ_Q_BASE_HI_OFS = 0x10,
202 EDMA_REQ_Q_IN_PTR_OFS = 0x14, /* also contains BASE_LO */
204 EDMA_REQ_Q_OUT_PTR_OFS = 0x18,
205 EDMA_REQ_Q_PTR_SHIFT = 5,
207 EDMA_RSP_Q_BASE_HI_OFS = 0x1c,
208 EDMA_RSP_Q_IN_PTR_OFS = 0x20,
209 EDMA_RSP_Q_OUT_PTR_OFS = 0x24, /* also contains BASE_LO */
210 EDMA_RSP_Q_PTR_SHIFT = 3,
219 /* Host private flags (hp_flags) */
220 MV_HP_FLAG_MSI = (1 << 0),
221 MV_HP_ERRATA_50XXB0 = (1 << 1),
222 MV_HP_ERRATA_50XXB2 = (1 << 2),
223 MV_HP_ERRATA_60X1B2 = (1 << 3),
224 MV_HP_ERRATA_60X1C0 = (1 << 4),
225 MV_HP_50XX = (1 << 5),
227 /* Port private flags (pp_flags) */
228 MV_PP_FLAG_EDMA_EN = (1 << 0),
229 MV_PP_FLAG_EDMA_DS_ACT = (1 << 1),
232 #define IS_60XX(hpriv) (((hpriv)->hp_flags & MV_HP_50XX) == 0)
235 /* Our DMA boundary is determined by an ePRD being unable to handle
236 * anything larger than 64KB
238 MV_DMA_BOUNDARY = 0xffffU,
240 EDMA_REQ_Q_BASE_LO_MASK = 0xfffffc00U,
242 EDMA_RSP_Q_BASE_LO_MASK = 0xffffff00U,
253 /* Command ReQuest Block: 32B */
261 /* Command ResPonse Block: 8B */
268 /* EDMA Physical Region Descriptor (ePRD); A.K.A. SG */
276 struct mv_port_priv {
277 struct mv_crqb *crqb;
279 struct mv_crpb *crpb;
281 struct mv_sg *sg_tbl;
282 dma_addr_t sg_tbl_dma;
284 unsigned req_producer; /* cp of req_in_ptr */
285 unsigned rsp_consumer; /* cp of rsp_out_ptr */
289 struct mv_port_signal {
296 void (*phy_errata)(struct mv_host_priv *hpriv, void __iomem *mmio,
298 void (*enable_leds)(struct mv_host_priv *hpriv, void __iomem *mmio);
299 void (*read_preamp)(struct mv_host_priv *hpriv, int idx,
301 int (*reset_hc)(struct mv_host_priv *hpriv, void __iomem *mmio);
302 void (*reset_flash)(struct mv_host_priv *hpriv, void __iomem *mmio);
303 void (*reset_bus)(struct pci_dev *pdev, void __iomem *mmio);
306 struct mv_host_priv {
308 struct mv_port_signal signal[8];
309 const struct mv_hw_ops *ops;
312 static void mv_irq_clear(struct ata_port *ap);
313 static u32 mv_scr_read(struct ata_port *ap, unsigned int sc_reg_in);
314 static void mv_scr_write(struct ata_port *ap, unsigned int sc_reg_in, u32 val);
315 static void mv_phy_reset(struct ata_port *ap);
316 static void mv_host_stop(struct ata_host_set *host_set);
317 static int mv_port_start(struct ata_port *ap);
318 static void mv_port_stop(struct ata_port *ap);
319 static void mv_qc_prep(struct ata_queued_cmd *qc);
320 static int mv_qc_issue(struct ata_queued_cmd *qc);
321 static irqreturn_t mv_interrupt(int irq, void *dev_instance,
322 struct pt_regs *regs);
323 static void mv_eng_timeout(struct ata_port *ap);
324 static int mv_init_one(struct pci_dev *pdev, const struct pci_device_id *ent);
326 static void mv5_phy_errata(struct mv_host_priv *hpriv, void __iomem *mmio,
328 static void mv5_enable_leds(struct mv_host_priv *hpriv, void __iomem *mmio);
329 static void mv5_read_preamp(struct mv_host_priv *hpriv, int idx,
331 static int mv5_reset_hc(struct mv_host_priv *hpriv, void __iomem *mmio);
332 static void mv5_reset_flash(struct mv_host_priv *hpriv, void __iomem *mmio);
333 static void mv5_reset_bus(struct pci_dev *pdev, void __iomem *mmio);
335 static void mv6_phy_errata(struct mv_host_priv *hpriv, void __iomem *mmio,
337 static void mv6_enable_leds(struct mv_host_priv *hpriv, void __iomem *mmio);
338 static void mv6_read_preamp(struct mv_host_priv *hpriv, int idx,
340 static int mv6_reset_hc(struct mv_host_priv *hpriv, void __iomem *mmio);
341 static void mv6_reset_flash(struct mv_host_priv *hpriv, void __iomem *mmio);
342 static void mv_reset_pci_bus(struct pci_dev *pdev, void __iomem *mmio);
344 static struct scsi_host_template mv_sht = {
345 .module = THIS_MODULE,
347 .ioctl = ata_scsi_ioctl,
348 .queuecommand = ata_scsi_queuecmd,
349 .eh_strategy_handler = ata_scsi_error,
350 .can_queue = MV_USE_Q_DEPTH,
351 .this_id = ATA_SHT_THIS_ID,
352 .sg_tablesize = MV_MAX_SG_CT,
353 .max_sectors = ATA_MAX_SECTORS,
354 .cmd_per_lun = ATA_SHT_CMD_PER_LUN,
355 .emulated = ATA_SHT_EMULATED,
356 .use_clustering = ATA_SHT_USE_CLUSTERING,
357 .proc_name = DRV_NAME,
358 .dma_boundary = MV_DMA_BOUNDARY,
359 .slave_configure = ata_scsi_slave_config,
360 .bios_param = ata_std_bios_param,
364 static const struct ata_port_operations mv_ops = {
365 .port_disable = ata_port_disable,
367 .tf_load = ata_tf_load,
368 .tf_read = ata_tf_read,
369 .check_status = ata_check_status,
370 .exec_command = ata_exec_command,
371 .dev_select = ata_std_dev_select,
373 .phy_reset = mv_phy_reset,
375 .qc_prep = mv_qc_prep,
376 .qc_issue = mv_qc_issue,
378 .eng_timeout = mv_eng_timeout,
380 .irq_handler = mv_interrupt,
381 .irq_clear = mv_irq_clear,
383 .scr_read = mv_scr_read,
384 .scr_write = mv_scr_write,
386 .port_start = mv_port_start,
387 .port_stop = mv_port_stop,
388 .host_stop = mv_host_stop,
391 static struct ata_port_info mv_port_info[] = {
394 .host_flags = MV_COMMON_FLAGS,
395 .pio_mask = 0x1f, /* pio0-4 */
396 .udma_mask = 0, /* 0x7f (udma0-6 disabled for now) */
401 .host_flags = (MV_COMMON_FLAGS | MV_FLAG_DUAL_HC),
402 .pio_mask = 0x1f, /* pio0-4 */
403 .udma_mask = 0, /* 0x7f (udma0-6 disabled for now) */
408 .host_flags = (MV_COMMON_FLAGS | MV_FLAG_DUAL_HC),
409 .pio_mask = 0x1f, /* pio0-4 */
410 .udma_mask = 0, /* 0x7f (udma0-6 disabled for now) */
415 .host_flags = (MV_COMMON_FLAGS | MV_6XXX_FLAGS),
416 .pio_mask = 0x1f, /* pio0-4 */
417 .udma_mask = 0x7f, /* udma0-6 */
422 .host_flags = (MV_COMMON_FLAGS | MV_6XXX_FLAGS |
424 .pio_mask = 0x1f, /* pio0-4 */
425 .udma_mask = 0x7f, /* udma0-6 */
430 static const struct pci_device_id mv_pci_tbl[] = {
431 #if 0 /* unusably broken right now */
432 {PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x5040), 0, 0, chip_504x},
433 {PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x5041), 0, 0, chip_504x},
434 {PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x5080), 0, 0, chip_5080},
435 {PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x5081), 0, 0, chip_508x},
438 {PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x6040), 0, 0, chip_604x},
439 {PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x6041), 0, 0, chip_604x},
440 {PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x6080), 0, 0, chip_608x},
441 {PCI_DEVICE(PCI_VENDOR_ID_MARVELL, 0x6081), 0, 0, chip_608x},
443 {PCI_DEVICE(PCI_VENDOR_ID_ADAPTEC2, 0x0241), 0, 0, chip_604x},
444 {} /* terminate list */
447 static struct pci_driver mv_pci_driver = {
449 .id_table = mv_pci_tbl,
450 .probe = mv_init_one,
451 .remove = ata_pci_remove_one,
454 static const struct mv_hw_ops mv5xxx_ops = {
455 .phy_errata = mv5_phy_errata,
456 .enable_leds = mv5_enable_leds,
457 .read_preamp = mv5_read_preamp,
458 .reset_hc = mv5_reset_hc,
459 .reset_flash = mv5_reset_flash,
460 .reset_bus = mv5_reset_bus,
463 static const struct mv_hw_ops mv6xxx_ops = {
464 .phy_errata = mv6_phy_errata,
465 .enable_leds = mv6_enable_leds,
466 .read_preamp = mv6_read_preamp,
467 .reset_hc = mv6_reset_hc,
468 .reset_flash = mv6_reset_flash,
469 .reset_bus = mv_reset_pci_bus,
476 static inline void writelfl(unsigned long data, void __iomem *addr)
479 (void) readl(addr); /* flush to avoid PCI posted write */
482 static inline void __iomem *mv_hc_base(void __iomem *base, unsigned int hc)
484 return (base + MV_SATAHC0_REG_BASE + (hc * MV_SATAHC_REG_SZ));
487 static inline void __iomem *mv_port_base(void __iomem *base, unsigned int port)
489 return (mv_hc_base(base, port >> MV_PORT_HC_SHIFT) +
490 MV_SATAHC_ARBTR_REG_SZ +
491 ((port & MV_PORT_MASK) * MV_PORT_REG_SZ));
494 static inline void __iomem *mv_ap_base(struct ata_port *ap)
496 return mv_port_base(ap->host_set->mmio_base, ap->port_no);
499 static inline int mv_get_hc_count(unsigned long host_flags)
501 return ((host_flags & MV_FLAG_DUAL_HC) ? 2 : 1);
504 static void mv_irq_clear(struct ata_port *ap)
509 * mv_start_dma - Enable eDMA engine
510 * @base: port base address
511 * @pp: port private data
513 * Verify the local cache of the eDMA state is accurate with an
517 * Inherited from caller.
519 static void mv_start_dma(void __iomem *base, struct mv_port_priv *pp)
521 if (!(MV_PP_FLAG_EDMA_EN & pp->pp_flags)) {
522 writelfl(EDMA_EN, base + EDMA_CMD_OFS);
523 pp->pp_flags |= MV_PP_FLAG_EDMA_EN;
525 assert(EDMA_EN & readl(base + EDMA_CMD_OFS));
529 * mv_stop_dma - Disable eDMA engine
530 * @ap: ATA channel to manipulate
532 * Verify the local cache of the eDMA state is accurate with an
536 * Inherited from caller.
538 static void mv_stop_dma(struct ata_port *ap)
540 void __iomem *port_mmio = mv_ap_base(ap);
541 struct mv_port_priv *pp = ap->private_data;
545 if (MV_PP_FLAG_EDMA_EN & pp->pp_flags) {
546 /* Disable EDMA if active. The disable bit auto clears.
548 writelfl(EDMA_DS, port_mmio + EDMA_CMD_OFS);
549 pp->pp_flags &= ~MV_PP_FLAG_EDMA_EN;
551 assert(!(EDMA_EN & readl(port_mmio + EDMA_CMD_OFS)));
554 /* now properly wait for the eDMA to stop */
555 for (i = 1000; i > 0; i--) {
556 reg = readl(port_mmio + EDMA_CMD_OFS);
557 if (!(EDMA_EN & reg)) {
564 printk(KERN_ERR "ata%u: Unable to stop eDMA\n", ap->id);
565 /* FIXME: Consider doing a reset here to recover */
570 static void mv_dump_mem(void __iomem *start, unsigned bytes)
573 for (b = 0; b < bytes; ) {
574 DPRINTK("%p: ", start + b);
575 for (w = 0; b < bytes && w < 4; w++) {
576 printk("%08x ",readl(start + b));
584 static void mv_dump_pci_cfg(struct pci_dev *pdev, unsigned bytes)
589 for (b = 0; b < bytes; ) {
590 DPRINTK("%02x: ", b);
591 for (w = 0; b < bytes && w < 4; w++) {
592 (void) pci_read_config_dword(pdev,b,&dw);
600 static void mv_dump_all_regs(void __iomem *mmio_base, int port,
601 struct pci_dev *pdev)
604 void __iomem *hc_base = mv_hc_base(mmio_base,
605 port >> MV_PORT_HC_SHIFT);
606 void __iomem *port_base;
607 int start_port, num_ports, p, start_hc, num_hcs, hc;
610 start_hc = start_port = 0;
611 num_ports = 8; /* shld be benign for 4 port devs */
614 start_hc = port >> MV_PORT_HC_SHIFT;
616 num_ports = num_hcs = 1;
618 DPRINTK("All registers for port(s) %u-%u:\n", start_port,
619 num_ports > 1 ? num_ports - 1 : start_port);
622 DPRINTK("PCI config space regs:\n");
623 mv_dump_pci_cfg(pdev, 0x68);
625 DPRINTK("PCI regs:\n");
626 mv_dump_mem(mmio_base+0xc00, 0x3c);
627 mv_dump_mem(mmio_base+0xd00, 0x34);
628 mv_dump_mem(mmio_base+0xf00, 0x4);
629 mv_dump_mem(mmio_base+0x1d00, 0x6c);
630 for (hc = start_hc; hc < start_hc + num_hcs; hc++) {
631 hc_base = mv_hc_base(mmio_base, port >> MV_PORT_HC_SHIFT);
632 DPRINTK("HC regs (HC %i):\n", hc);
633 mv_dump_mem(hc_base, 0x1c);
635 for (p = start_port; p < start_port + num_ports; p++) {
636 port_base = mv_port_base(mmio_base, p);
637 DPRINTK("EDMA regs (port %i):\n",p);
638 mv_dump_mem(port_base, 0x54);
639 DPRINTK("SATA regs (port %i):\n",p);
640 mv_dump_mem(port_base+0x300, 0x60);
645 static unsigned int mv_scr_offset(unsigned int sc_reg_in)
653 ofs = SATA_STATUS_OFS + (sc_reg_in * sizeof(u32));
656 ofs = SATA_ACTIVE_OFS; /* active is not with the others */
665 static u32 mv_scr_read(struct ata_port *ap, unsigned int sc_reg_in)
667 unsigned int ofs = mv_scr_offset(sc_reg_in);
669 if (0xffffffffU != ofs) {
670 return readl(mv_ap_base(ap) + ofs);
676 static void mv_scr_write(struct ata_port *ap, unsigned int sc_reg_in, u32 val)
678 unsigned int ofs = mv_scr_offset(sc_reg_in);
680 if (0xffffffffU != ofs) {
681 writelfl(val, mv_ap_base(ap) + ofs);
686 * mv_host_stop - Host specific cleanup/stop routine.
687 * @host_set: host data structure
689 * Disable ints, cleanup host memory, call general purpose
693 * Inherited from caller.
695 static void mv_host_stop(struct ata_host_set *host_set)
697 struct mv_host_priv *hpriv = host_set->private_data;
698 struct pci_dev *pdev = to_pci_dev(host_set->dev);
700 if (hpriv->hp_flags & MV_HP_FLAG_MSI) {
701 pci_disable_msi(pdev);
706 ata_host_stop(host_set);
709 static inline void mv_priv_free(struct mv_port_priv *pp, struct device *dev)
711 dma_free_coherent(dev, MV_PORT_PRIV_DMA_SZ, pp->crpb, pp->crpb_dma);
715 * mv_port_start - Port specific init/start routine.
716 * @ap: ATA channel to manipulate
718 * Allocate and point to DMA memory, init port private memory,
722 * Inherited from caller.
724 static int mv_port_start(struct ata_port *ap)
726 struct device *dev = ap->host_set->dev;
727 struct mv_port_priv *pp;
728 void __iomem *port_mmio = mv_ap_base(ap);
733 pp = kmalloc(sizeof(*pp), GFP_KERNEL);
736 memset(pp, 0, sizeof(*pp));
738 mem = dma_alloc_coherent(dev, MV_PORT_PRIV_DMA_SZ, &mem_dma,
742 memset(mem, 0, MV_PORT_PRIV_DMA_SZ);
744 rc = ata_pad_alloc(ap, dev);
748 /* First item in chunk of DMA memory:
749 * 32-slot command request table (CRQB), 32 bytes each in size
752 pp->crqb_dma = mem_dma;
754 mem_dma += MV_CRQB_Q_SZ;
757 * 32-slot command response table (CRPB), 8 bytes each in size
760 pp->crpb_dma = mem_dma;
762 mem_dma += MV_CRPB_Q_SZ;
765 * Table of scatter-gather descriptors (ePRD), 16 bytes each
768 pp->sg_tbl_dma = mem_dma;
770 writelfl(EDMA_CFG_Q_DEPTH | EDMA_CFG_RD_BRST_EXT |
771 EDMA_CFG_WR_BUFF_LEN, port_mmio + EDMA_CFG_OFS);
773 writel((pp->crqb_dma >> 16) >> 16, port_mmio + EDMA_REQ_Q_BASE_HI_OFS);
774 writelfl(pp->crqb_dma & EDMA_REQ_Q_BASE_LO_MASK,
775 port_mmio + EDMA_REQ_Q_IN_PTR_OFS);
777 writelfl(0, port_mmio + EDMA_REQ_Q_OUT_PTR_OFS);
778 writelfl(0, port_mmio + EDMA_RSP_Q_IN_PTR_OFS);
780 writel((pp->crpb_dma >> 16) >> 16, port_mmio + EDMA_RSP_Q_BASE_HI_OFS);
781 writelfl(pp->crpb_dma & EDMA_RSP_Q_BASE_LO_MASK,
782 port_mmio + EDMA_RSP_Q_OUT_PTR_OFS);
784 pp->req_producer = pp->rsp_consumer = 0;
786 /* Don't turn on EDMA here...do it before DMA commands only. Else
787 * we'll be unable to send non-data, PIO, etc due to restricted access
790 ap->private_data = pp;
794 mv_priv_free(pp, dev);
802 * mv_port_stop - Port specific cleanup/stop routine.
803 * @ap: ATA channel to manipulate
805 * Stop DMA, cleanup port memory.
808 * This routine uses the host_set lock to protect the DMA stop.
810 static void mv_port_stop(struct ata_port *ap)
812 struct device *dev = ap->host_set->dev;
813 struct mv_port_priv *pp = ap->private_data;
816 spin_lock_irqsave(&ap->host_set->lock, flags);
818 spin_unlock_irqrestore(&ap->host_set->lock, flags);
820 ap->private_data = NULL;
821 ata_pad_free(ap, dev);
822 mv_priv_free(pp, dev);
827 * mv_fill_sg - Fill out the Marvell ePRD (scatter gather) entries
828 * @qc: queued command whose SG list to source from
830 * Populate the SG list and mark the last entry.
833 * Inherited from caller.
835 static void mv_fill_sg(struct ata_queued_cmd *qc)
837 struct mv_port_priv *pp = qc->ap->private_data;
839 struct scatterlist *sg;
841 ata_for_each_sg(sg, qc) {
845 addr = sg_dma_address(sg);
846 sg_len = sg_dma_len(sg);
848 pp->sg_tbl[i].addr = cpu_to_le32(addr & 0xffffffff);
849 pp->sg_tbl[i].addr_hi = cpu_to_le32((addr >> 16) >> 16);
850 assert(0 == (sg_len & ~MV_DMA_BOUNDARY));
851 pp->sg_tbl[i].flags_size = cpu_to_le32(sg_len);
852 if (ata_sg_is_last(sg, qc))
853 pp->sg_tbl[i].flags_size |= cpu_to_le32(EPRD_FLAG_END_OF_TBL);
859 static inline unsigned mv_inc_q_index(unsigned *index)
861 *index = (*index + 1) & MV_MAX_Q_DEPTH_MASK;
865 static inline void mv_crqb_pack_cmd(u16 *cmdw, u8 data, u8 addr, unsigned last)
867 *cmdw = data | (addr << CRQB_CMD_ADDR_SHIFT) | CRQB_CMD_CS |
868 (last ? CRQB_CMD_LAST : 0);
872 * mv_qc_prep - Host specific command preparation.
873 * @qc: queued command to prepare
875 * This routine simply redirects to the general purpose routine
876 * if command is not DMA. Else, it handles prep of the CRQB
877 * (command request block), does some sanity checking, and calls
878 * the SG load routine.
881 * Inherited from caller.
883 static void mv_qc_prep(struct ata_queued_cmd *qc)
885 struct ata_port *ap = qc->ap;
886 struct mv_port_priv *pp = ap->private_data;
888 struct ata_taskfile *tf;
891 if (ATA_PROT_DMA != qc->tf.protocol) {
895 /* the req producer index should be the same as we remember it */
896 assert(((readl(mv_ap_base(qc->ap) + EDMA_REQ_Q_IN_PTR_OFS) >>
897 EDMA_REQ_Q_PTR_SHIFT) & MV_MAX_Q_DEPTH_MASK) ==
900 /* Fill in command request block
902 if (!(qc->tf.flags & ATA_TFLAG_WRITE)) {
903 flags |= CRQB_FLAG_READ;
905 assert(MV_MAX_Q_DEPTH > qc->tag);
906 flags |= qc->tag << CRQB_TAG_SHIFT;
908 pp->crqb[pp->req_producer].sg_addr =
909 cpu_to_le32(pp->sg_tbl_dma & 0xffffffff);
910 pp->crqb[pp->req_producer].sg_addr_hi =
911 cpu_to_le32((pp->sg_tbl_dma >> 16) >> 16);
912 pp->crqb[pp->req_producer].ctrl_flags = cpu_to_le16(flags);
914 cw = &pp->crqb[pp->req_producer].ata_cmd[0];
917 /* Sadly, the CRQB cannot accomodate all registers--there are
918 * only 11 bytes...so we must pick and choose required
919 * registers based on the command. So, we drop feature and
920 * hob_feature for [RW] DMA commands, but they are needed for
921 * NCQ. NCQ will drop hob_nsect.
923 switch (tf->command) {
925 case ATA_CMD_READ_EXT:
927 case ATA_CMD_WRITE_EXT:
928 mv_crqb_pack_cmd(cw++, tf->hob_nsect, ATA_REG_NSECT, 0);
930 #ifdef LIBATA_NCQ /* FIXME: remove this line when NCQ added */
931 case ATA_CMD_FPDMA_READ:
932 case ATA_CMD_FPDMA_WRITE:
933 mv_crqb_pack_cmd(cw++, tf->hob_feature, ATA_REG_FEATURE, 0);
934 mv_crqb_pack_cmd(cw++, tf->feature, ATA_REG_FEATURE, 0);
936 #endif /* FIXME: remove this line when NCQ added */
938 /* The only other commands EDMA supports in non-queued and
939 * non-NCQ mode are: [RW] STREAM DMA and W DMA FUA EXT, none
940 * of which are defined/used by Linux. If we get here, this
943 * FIXME: modify libata to give qc_prep a return value and
949 mv_crqb_pack_cmd(cw++, tf->nsect, ATA_REG_NSECT, 0);
950 mv_crqb_pack_cmd(cw++, tf->hob_lbal, ATA_REG_LBAL, 0);
951 mv_crqb_pack_cmd(cw++, tf->lbal, ATA_REG_LBAL, 0);
952 mv_crqb_pack_cmd(cw++, tf->hob_lbam, ATA_REG_LBAM, 0);
953 mv_crqb_pack_cmd(cw++, tf->lbam, ATA_REG_LBAM, 0);
954 mv_crqb_pack_cmd(cw++, tf->hob_lbah, ATA_REG_LBAH, 0);
955 mv_crqb_pack_cmd(cw++, tf->lbah, ATA_REG_LBAH, 0);
956 mv_crqb_pack_cmd(cw++, tf->device, ATA_REG_DEVICE, 0);
957 mv_crqb_pack_cmd(cw++, tf->command, ATA_REG_CMD, 1); /* last */
959 if (!(qc->flags & ATA_QCFLAG_DMAMAP)) {
966 * mv_qc_issue - Initiate a command to the host
967 * @qc: queued command to start
969 * This routine simply redirects to the general purpose routine
970 * if command is not DMA. Else, it sanity checks our local
971 * caches of the request producer/consumer indices then enables
972 * DMA and bumps the request producer index.
975 * Inherited from caller.
977 static int mv_qc_issue(struct ata_queued_cmd *qc)
979 void __iomem *port_mmio = mv_ap_base(qc->ap);
980 struct mv_port_priv *pp = qc->ap->private_data;
983 if (ATA_PROT_DMA != qc->tf.protocol) {
984 /* We're about to send a non-EDMA capable command to the
985 * port. Turn off EDMA so there won't be problems accessing
986 * shadow block, etc registers.
989 return ata_qc_issue_prot(qc);
992 in_ptr = readl(port_mmio + EDMA_REQ_Q_IN_PTR_OFS);
994 /* the req producer index should be the same as we remember it */
995 assert(((in_ptr >> EDMA_REQ_Q_PTR_SHIFT) & MV_MAX_Q_DEPTH_MASK) ==
997 /* until we do queuing, the queue should be empty at this point */
998 assert(((in_ptr >> EDMA_REQ_Q_PTR_SHIFT) & MV_MAX_Q_DEPTH_MASK) ==
999 ((readl(port_mmio + EDMA_REQ_Q_OUT_PTR_OFS) >>
1000 EDMA_REQ_Q_PTR_SHIFT) & MV_MAX_Q_DEPTH_MASK));
1002 mv_inc_q_index(&pp->req_producer); /* now incr producer index */
1004 mv_start_dma(port_mmio, pp);
1006 /* and write the request in pointer to kick the EDMA to life */
1007 in_ptr &= EDMA_REQ_Q_BASE_LO_MASK;
1008 in_ptr |= pp->req_producer << EDMA_REQ_Q_PTR_SHIFT;
1009 writelfl(in_ptr, port_mmio + EDMA_REQ_Q_IN_PTR_OFS);
1015 * mv_get_crpb_status - get status from most recently completed cmd
1016 * @ap: ATA channel to manipulate
1018 * This routine is for use when the port is in DMA mode, when it
1019 * will be using the CRPB (command response block) method of
1020 * returning command completion information. We assert indices
1021 * are good, grab status, and bump the response consumer index to
1022 * prove that we're up to date.
1025 * Inherited from caller.
1027 static u8 mv_get_crpb_status(struct ata_port *ap)
1029 void __iomem *port_mmio = mv_ap_base(ap);
1030 struct mv_port_priv *pp = ap->private_data;
1033 out_ptr = readl(port_mmio + EDMA_RSP_Q_OUT_PTR_OFS);
1035 /* the response consumer index should be the same as we remember it */
1036 assert(((out_ptr >> EDMA_RSP_Q_PTR_SHIFT) & MV_MAX_Q_DEPTH_MASK) ==
1039 /* increment our consumer index... */
1040 pp->rsp_consumer = mv_inc_q_index(&pp->rsp_consumer);
1042 /* and, until we do NCQ, there should only be 1 CRPB waiting */
1043 assert(((readl(port_mmio + EDMA_RSP_Q_IN_PTR_OFS) >>
1044 EDMA_RSP_Q_PTR_SHIFT) & MV_MAX_Q_DEPTH_MASK) ==
1047 /* write out our inc'd consumer index so EDMA knows we're caught up */
1048 out_ptr &= EDMA_RSP_Q_BASE_LO_MASK;
1049 out_ptr |= pp->rsp_consumer << EDMA_RSP_Q_PTR_SHIFT;
1050 writelfl(out_ptr, port_mmio + EDMA_RSP_Q_OUT_PTR_OFS);
1052 /* Return ATA status register for completed CRPB */
1053 return (pp->crpb[pp->rsp_consumer].flags >> CRPB_FLAG_STATUS_SHIFT);
1057 * mv_err_intr - Handle error interrupts on the port
1058 * @ap: ATA channel to manipulate
1060 * In most cases, just clear the interrupt and move on. However,
1061 * some cases require an eDMA reset, which is done right before
1062 * the COMRESET in mv_phy_reset(). The SERR case requires a
1063 * clear of pending errors in the SATA SERROR register. Finally,
1064 * if the port disabled DMA, update our cached copy to match.
1067 * Inherited from caller.
1069 static void mv_err_intr(struct ata_port *ap)
1071 void __iomem *port_mmio = mv_ap_base(ap);
1072 u32 edma_err_cause, serr = 0;
1074 edma_err_cause = readl(port_mmio + EDMA_ERR_IRQ_CAUSE_OFS);
1076 if (EDMA_ERR_SERR & edma_err_cause) {
1077 serr = scr_read(ap, SCR_ERROR);
1078 scr_write_flush(ap, SCR_ERROR, serr);
1080 if (EDMA_ERR_SELF_DIS & edma_err_cause) {
1081 struct mv_port_priv *pp = ap->private_data;
1082 pp->pp_flags &= ~MV_PP_FLAG_EDMA_EN;
1084 DPRINTK(KERN_ERR "ata%u: port error; EDMA err cause: 0x%08x "
1085 "SERR: 0x%08x\n", ap->id, edma_err_cause, serr);
1087 /* Clear EDMA now that SERR cleanup done */
1088 writelfl(0, port_mmio + EDMA_ERR_IRQ_CAUSE_OFS);
1090 /* check for fatal here and recover if needed */
1091 if (EDMA_ERR_FATAL & edma_err_cause) {
1097 * mv_host_intr - Handle all interrupts on the given host controller
1098 * @host_set: host specific structure
1099 * @relevant: port error bits relevant to this host controller
1100 * @hc: which host controller we're to look at
1102 * Read then write clear the HC interrupt status then walk each
1103 * port connected to the HC and see if it needs servicing. Port
1104 * success ints are reported in the HC interrupt status reg, the
1105 * port error ints are reported in the higher level main
1106 * interrupt status register and thus are passed in via the
1107 * 'relevant' argument.
1110 * Inherited from caller.
1112 static void mv_host_intr(struct ata_host_set *host_set, u32 relevant,
1115 void __iomem *mmio = host_set->mmio_base;
1116 void __iomem *hc_mmio = mv_hc_base(mmio, hc);
1117 struct ata_port *ap;
1118 struct ata_queued_cmd *qc;
1120 int shift, port, port0, hard_port, handled;
1121 unsigned int err_mask;
1127 port0 = MV_PORTS_PER_HC;
1130 /* we'll need the HC success int register in most cases */
1131 hc_irq_cause = readl(hc_mmio + HC_IRQ_CAUSE_OFS);
1133 writelfl(~hc_irq_cause, hc_mmio + HC_IRQ_CAUSE_OFS);
1136 VPRINTK("ENTER, hc%u relevant=0x%08x HC IRQ cause=0x%08x\n",
1137 hc,relevant,hc_irq_cause);
1139 for (port = port0; port < port0 + MV_PORTS_PER_HC; port++) {
1140 ap = host_set->ports[port];
1141 hard_port = port & MV_PORT_MASK; /* range 0-3 */
1142 handled = 0; /* ensure ata_status is set if handled++ */
1144 if ((CRPB_DMA_DONE << hard_port) & hc_irq_cause) {
1145 /* new CRPB on the queue; just one at a time until NCQ
1147 ata_status = mv_get_crpb_status(ap);
1149 } else if ((DEV_IRQ << hard_port) & hc_irq_cause) {
1150 /* received ATA IRQ; read the status reg to clear INTRQ
1152 ata_status = readb((void __iomem *)
1153 ap->ioaddr.status_addr);
1157 err_mask = ac_err_mask(ata_status);
1159 shift = port << 1; /* (port * 2) */
1160 if (port >= MV_PORTS_PER_HC) {
1161 shift++; /* skip bit 8 in the HC Main IRQ reg */
1163 if ((PORT0_ERR << shift) & relevant) {
1165 err_mask |= AC_ERR_OTHER;
1169 if (handled && ap) {
1170 qc = ata_qc_from_tag(ap, ap->active_tag);
1172 VPRINTK("port %u IRQ found for qc, "
1173 "ata_status 0x%x\n", port,ata_status);
1174 /* mark qc status appropriately */
1175 ata_qc_complete(qc, err_mask);
1185 * @dev_instance: private data; in this case the host structure
1188 * Read the read only register to determine if any host
1189 * controllers have pending interrupts. If so, call lower level
1190 * routine to handle. Also check for PCI errors which are only
1194 * This routine holds the host_set lock while processing pending
1197 static irqreturn_t mv_interrupt(int irq, void *dev_instance,
1198 struct pt_regs *regs)
1200 struct ata_host_set *host_set = dev_instance;
1201 unsigned int hc, handled = 0, n_hcs;
1202 void __iomem *mmio = host_set->mmio_base;
1205 irq_stat = readl(mmio + HC_MAIN_IRQ_CAUSE_OFS);
1207 /* check the cases where we either have nothing pending or have read
1208 * a bogus register value which can indicate HW removal or PCI fault
1210 if (!irq_stat || (0xffffffffU == irq_stat)) {
1214 n_hcs = mv_get_hc_count(host_set->ports[0]->flags);
1215 spin_lock(&host_set->lock);
1217 for (hc = 0; hc < n_hcs; hc++) {
1218 u32 relevant = irq_stat & (HC0_IRQ_PEND << (hc * HC_SHIFT));
1220 mv_host_intr(host_set, relevant, hc);
1224 if (PCI_ERR & irq_stat) {
1225 printk(KERN_ERR DRV_NAME ": PCI ERROR; PCI IRQ cause=0x%08x\n",
1226 readl(mmio + PCI_IRQ_CAUSE_OFS));
1228 DPRINTK("All regs @ PCI error\n");
1229 mv_dump_all_regs(mmio, -1, to_pci_dev(host_set->dev));
1231 writelfl(0, mmio + PCI_IRQ_CAUSE_OFS);
1234 spin_unlock(&host_set->lock);
1236 return IRQ_RETVAL(handled);
1239 static void mv5_reset_bus(struct pci_dev *pdev, void __iomem *mmio)
1244 pci_read_config_byte(pdev, PCI_REVISION_ID, &rev_id);
1246 early_5080 = (pdev->device == 0x5080) && (rev_id == 0);
1249 u32 tmp = readl(mmio + MV_PCI_EXP_ROM_BAR_CTL);
1251 writel(tmp, mmio + MV_PCI_EXP_ROM_BAR_CTL);
1254 mv_reset_pci_bus(pdev, mmio);
1257 static void mv5_reset_flash(struct mv_host_priv *hpriv, void __iomem *mmio)
1259 writel(0x0fcfffff, mmio + MV_FLASH_CTL);
1262 static void mv5_read_preamp(struct mv_host_priv *hpriv, int idx,
1268 static void mv5_enable_leds(struct mv_host_priv *hpriv, void __iomem *mmio)
1272 writel(0, mmio + MV_GPIO_PORT_CTL);
1274 /* FIXME: handle MV_HP_ERRATA_50XXB2 errata */
1276 tmp = readl(mmio + MV_PCI_EXP_ROM_BAR_CTL);
1278 writel(tmp, mmio + MV_PCI_EXP_ROM_BAR_CTL);
1281 static void mv5_phy_errata(struct mv_host_priv *hpriv, void __iomem *mmio,
1287 static int mv5_reset_hc(struct mv_host_priv *hpriv, void __iomem *mmio)
1294 #define ZERO(reg) writel(0, mmio + (reg))
1295 static void mv_reset_pci_bus(struct pci_dev *pdev, void __iomem *mmio)
1299 tmp = readl(mmio + MV_PCI_MODE);
1301 writel(tmp, mmio + MV_PCI_MODE);
1303 ZERO(MV_PCI_DISC_TIMER);
1304 ZERO(MV_PCI_MSI_TRIGGER);
1305 writel(0x000100ff, mmio + MV_PCI_XBAR_TMOUT);
1306 ZERO(HC_MAIN_IRQ_MASK_OFS);
1307 ZERO(MV_PCI_SERR_MASK);
1308 ZERO(PCI_IRQ_CAUSE_OFS);
1309 ZERO(PCI_IRQ_MASK_OFS);
1310 ZERO(MV_PCI_ERR_LOW_ADDRESS);
1311 ZERO(MV_PCI_ERR_HIGH_ADDRESS);
1312 ZERO(MV_PCI_ERR_ATTRIBUTE);
1313 ZERO(MV_PCI_ERR_COMMAND);
1317 static void mv6_reset_flash(struct mv_host_priv *hpriv, void __iomem *mmio)
1321 mv5_reset_flash(hpriv, mmio);
1323 tmp = readl(mmio + MV_GPIO_PORT_CTL);
1325 tmp |= (1 << 5) | (1 << 6);
1326 writel(tmp, mmio + MV_GPIO_PORT_CTL);
1330 * mv6_reset_hc - Perform the 6xxx global soft reset
1331 * @mmio: base address of the HBA
1333 * This routine only applies to 6xxx parts.
1336 * Inherited from caller.
1338 static int mv6_reset_hc(struct mv_host_priv *hpriv, void __iomem *mmio)
1340 void __iomem *reg = mmio + PCI_MAIN_CMD_STS_OFS;
1344 /* Following procedure defined in PCI "main command and status
1348 writel(t | STOP_PCI_MASTER, reg);
1350 for (i = 0; i < 1000; i++) {
1353 if (PCI_MASTER_EMPTY & t) {
1357 if (!(PCI_MASTER_EMPTY & t)) {
1358 printk(KERN_ERR DRV_NAME ": PCI master won't flush\n");
1366 writel(t | GLOB_SFT_RST, reg);
1369 } while (!(GLOB_SFT_RST & t) && (i-- > 0));
1371 if (!(GLOB_SFT_RST & t)) {
1372 printk(KERN_ERR DRV_NAME ": can't set global reset\n");
1377 /* clear reset and *reenable the PCI master* (not mentioned in spec) */
1380 writel(t & ~(GLOB_SFT_RST | STOP_PCI_MASTER), reg);
1383 } while ((GLOB_SFT_RST & t) && (i-- > 0));
1385 if (GLOB_SFT_RST & t) {
1386 printk(KERN_ERR DRV_NAME ": can't clear global reset\n");
1393 static void mv6_read_preamp(struct mv_host_priv *hpriv, int idx,
1396 void __iomem *port_mmio;
1399 tmp = readl(mmio + MV_RESET_CFG);
1400 if ((tmp & (1 << 0)) == 0) {
1401 hpriv->signal[idx].amps = 0x7 << 8;
1402 hpriv->signal[idx].pre = 0x1 << 5;
1406 port_mmio = mv_port_base(mmio, idx);
1407 tmp = readl(port_mmio + PHY_MODE2);
1409 hpriv->signal[idx].amps = tmp & 0x700; /* bits 10:8 */
1410 hpriv->signal[idx].pre = tmp & 0xe0; /* bits 7:5 */
1413 static void mv6_enable_leds(struct mv_host_priv *hpriv, void __iomem *mmio)
1415 writel(0x00000060, mmio + MV_GPIO_PORT_CTL);
1418 static void mv6_phy_errata(struct mv_host_priv *hpriv, void __iomem *port_mmio,
1421 u32 hp_flags = hpriv->hp_flags;
1423 hp_flags & (MV_HP_ERRATA_60X1B2 | MV_HP_ERRATA_60X1C0);
1425 hp_flags & (MV_HP_ERRATA_60X1B2 | MV_HP_ERRATA_60X1C0);
1428 if (fix_phy_mode2) {
1429 m2 = readl(port_mmio + PHY_MODE2);
1432 writel(m2, port_mmio + PHY_MODE2);
1436 m2 = readl(port_mmio + PHY_MODE2);
1437 m2 &= ~((1 << 16) | (1 << 31));
1438 writel(m2, port_mmio + PHY_MODE2);
1443 /* who knows what this magic does */
1444 tmp = readl(port_mmio + PHY_MODE3);
1447 writel(tmp, port_mmio + PHY_MODE3);
1449 if (fix_phy_mode4) {
1452 m4 = readl(port_mmio + PHY_MODE4);
1454 if (hp_flags & MV_HP_ERRATA_60X1B2)
1455 tmp = readl(port_mmio + 0x310);
1457 m4 = (m4 & ~(1 << 1)) | (1 << 0);
1459 writel(m4, port_mmio + PHY_MODE4);
1461 if (hp_flags & MV_HP_ERRATA_60X1B2)
1462 writel(tmp, port_mmio + 0x310);
1465 /* Revert values of pre-emphasis and signal amps to the saved ones */
1466 m2 = readl(port_mmio + PHY_MODE2);
1468 m2 &= ~MV_M2_PREAMP_MASK;
1469 m2 |= hpriv->signal[port].amps;
1470 m2 |= hpriv->signal[port].pre;
1473 writel(m2, port_mmio + PHY_MODE2);
1477 * mv_phy_reset - Perform eDMA reset followed by COMRESET
1478 * @ap: ATA channel to manipulate
1480 * Part of this is taken from __sata_phy_reset and modified to
1481 * not sleep since this routine gets called from interrupt level.
1484 * Inherited from caller. This is coded to safe to call at
1485 * interrupt level, i.e. it does not sleep.
1487 static void mv_phy_reset(struct ata_port *ap)
1489 struct mv_port_priv *pp = ap->private_data;
1490 struct mv_host_priv *hpriv = ap->host_set->private_data;
1491 void __iomem *port_mmio = mv_ap_base(ap);
1492 struct ata_taskfile tf;
1493 struct ata_device *dev = &ap->device[0];
1494 unsigned long timeout;
1496 VPRINTK("ENTER, port %u, mmio 0x%p\n", ap->port_no, port_mmio);
1500 writelfl(ATA_RST, port_mmio + EDMA_CMD_OFS);
1502 if (IS_60XX(hpriv)) {
1503 u32 ifctl = readl(port_mmio + SATA_INTERFACE_CTL);
1504 ifctl |= (1 << 12) | (1 << 7);
1505 writelfl(ifctl, port_mmio + SATA_INTERFACE_CTL);
1508 udelay(25); /* allow reset propagation */
1510 /* Spec never mentions clearing the bit. Marvell's driver does
1511 * clear the bit, however.
1513 writelfl(0, port_mmio + EDMA_CMD_OFS);
1515 hpriv->ops->phy_errata(hpriv, port_mmio, ap->port_no);
1517 DPRINTK("S-regs after ATA_RST: SStat 0x%08x SErr 0x%08x "
1518 "SCtrl 0x%08x\n", mv_scr_read(ap, SCR_STATUS),
1519 mv_scr_read(ap, SCR_ERROR), mv_scr_read(ap, SCR_CONTROL));
1521 /* proceed to init communications via the scr_control reg */
1522 scr_write_flush(ap, SCR_CONTROL, 0x301);
1524 scr_write_flush(ap, SCR_CONTROL, 0x300);
1525 timeout = jiffies + (HZ * 1);
1528 if ((scr_read(ap, SCR_STATUS) & 0xf) != 1)
1530 } while (time_before(jiffies, timeout));
1532 mv_scr_write(ap, SCR_ERROR, mv_scr_read(ap, SCR_ERROR));
1534 DPRINTK("S-regs after PHY wake: SStat 0x%08x SErr 0x%08x "
1535 "SCtrl 0x%08x\n", mv_scr_read(ap, SCR_STATUS),
1536 mv_scr_read(ap, SCR_ERROR), mv_scr_read(ap, SCR_CONTROL));
1538 if (sata_dev_present(ap)) {
1541 printk(KERN_INFO "ata%u: no device found (phy stat %08x)\n",
1542 ap->id, scr_read(ap, SCR_STATUS));
1543 ata_port_disable(ap);
1546 ap->cbl = ATA_CBL_SATA;
1548 tf.lbah = readb((void __iomem *) ap->ioaddr.lbah_addr);
1549 tf.lbam = readb((void __iomem *) ap->ioaddr.lbam_addr);
1550 tf.lbal = readb((void __iomem *) ap->ioaddr.lbal_addr);
1551 tf.nsect = readb((void __iomem *) ap->ioaddr.nsect_addr);
1553 dev->class = ata_dev_classify(&tf);
1554 if (!ata_dev_present(dev)) {
1555 VPRINTK("Port disabled post-sig: No device present.\n");
1556 ata_port_disable(ap);
1559 writelfl(0, port_mmio + EDMA_ERR_IRQ_CAUSE_OFS);
1561 pp->pp_flags &= ~MV_PP_FLAG_EDMA_EN;
1567 * mv_eng_timeout - Routine called by libata when SCSI times out I/O
1568 * @ap: ATA channel to manipulate
1570 * Intent is to clear all pending error conditions, reset the
1571 * chip/bus, fail the command, and move on.
1574 * This routine holds the host_set lock while failing the command.
1576 static void mv_eng_timeout(struct ata_port *ap)
1578 struct ata_queued_cmd *qc;
1579 unsigned long flags;
1581 printk(KERN_ERR "ata%u: Entering mv_eng_timeout\n",ap->id);
1582 DPRINTK("All regs @ start of eng_timeout\n");
1583 mv_dump_all_regs(ap->host_set->mmio_base, ap->port_no,
1584 to_pci_dev(ap->host_set->dev));
1586 qc = ata_qc_from_tag(ap, ap->active_tag);
1587 printk(KERN_ERR "mmio_base %p ap %p qc %p scsi_cmnd %p &cmnd %p\n",
1588 ap->host_set->mmio_base, ap, qc, qc->scsicmd,
1589 &qc->scsicmd->cmnd);
1595 printk(KERN_ERR "ata%u: BUG: timeout without command\n",
1598 /* hack alert! We cannot use the supplied completion
1599 * function from inside the ->eh_strategy_handler() thread.
1600 * libata is the only user of ->eh_strategy_handler() in
1601 * any kernel, so the default scsi_done() assumes it is
1602 * not being called from the SCSI EH.
1604 spin_lock_irqsave(&ap->host_set->lock, flags);
1605 qc->scsidone = scsi_finish_command;
1606 ata_qc_complete(qc, AC_ERR_OTHER);
1607 spin_unlock_irqrestore(&ap->host_set->lock, flags);
1612 * mv_port_init - Perform some early initialization on a single port.
1613 * @port: libata data structure storing shadow register addresses
1614 * @port_mmio: base address of the port
1616 * Initialize shadow register mmio addresses, clear outstanding
1617 * interrupts on the port, and unmask interrupts for the future
1618 * start of the port.
1621 * Inherited from caller.
1623 static void mv_port_init(struct ata_ioports *port, void __iomem *port_mmio)
1625 unsigned long shd_base = (unsigned long) port_mmio + SHD_BLK_OFS;
1628 /* PIO related setup
1630 port->data_addr = shd_base + (sizeof(u32) * ATA_REG_DATA);
1632 port->feature_addr = shd_base + (sizeof(u32) * ATA_REG_ERR);
1633 port->nsect_addr = shd_base + (sizeof(u32) * ATA_REG_NSECT);
1634 port->lbal_addr = shd_base + (sizeof(u32) * ATA_REG_LBAL);
1635 port->lbam_addr = shd_base + (sizeof(u32) * ATA_REG_LBAM);
1636 port->lbah_addr = shd_base + (sizeof(u32) * ATA_REG_LBAH);
1637 port->device_addr = shd_base + (sizeof(u32) * ATA_REG_DEVICE);
1639 port->command_addr = shd_base + (sizeof(u32) * ATA_REG_STATUS);
1640 /* special case: control/altstatus doesn't have ATA_REG_ address */
1641 port->altstatus_addr = port->ctl_addr = shd_base + SHD_CTL_AST_OFS;
1644 port->cmd_addr = port->bmdma_addr = port->scr_addr = 0;
1646 /* Clear any currently outstanding port interrupt conditions */
1647 serr_ofs = mv_scr_offset(SCR_ERROR);
1648 writelfl(readl(port_mmio + serr_ofs), port_mmio + serr_ofs);
1649 writelfl(0, port_mmio + EDMA_ERR_IRQ_CAUSE_OFS);
1651 /* unmask all EDMA error interrupts */
1652 writelfl(~0, port_mmio + EDMA_ERR_IRQ_MASK_OFS);
1654 VPRINTK("EDMA cfg=0x%08x EDMA IRQ err cause/mask=0x%08x/0x%08x\n",
1655 readl(port_mmio + EDMA_CFG_OFS),
1656 readl(port_mmio + EDMA_ERR_IRQ_CAUSE_OFS),
1657 readl(port_mmio + EDMA_ERR_IRQ_MASK_OFS));
1660 static int mv_chip_id(struct pci_dev *pdev, struct mv_host_priv *hpriv,
1661 unsigned int board_idx)
1664 u32 hp_flags = hpriv->hp_flags;
1666 pci_read_config_byte(pdev, PCI_REVISION_ID, &rev_id);
1670 hpriv->ops = &mv5xxx_ops;
1671 hp_flags |= MV_HP_50XX;
1675 hp_flags |= MV_HP_ERRATA_50XXB0;
1678 hp_flags |= MV_HP_ERRATA_50XXB2;
1681 dev_printk(KERN_WARNING, &pdev->dev,
1682 "Applying 50XXB2 workarounds to unknown rev\n");
1683 hp_flags |= MV_HP_ERRATA_50XXB2;
1690 hpriv->ops = &mv5xxx_ops;
1691 hp_flags |= MV_HP_50XX;
1695 hp_flags |= MV_HP_ERRATA_50XXB0;
1698 hp_flags |= MV_HP_ERRATA_50XXB2;
1701 dev_printk(KERN_WARNING, &pdev->dev,
1702 "Applying B2 workarounds to unknown rev\n");
1703 hp_flags |= MV_HP_ERRATA_50XXB2;
1710 hpriv->ops = &mv6xxx_ops;
1714 hp_flags |= MV_HP_ERRATA_60X1B2;
1717 hp_flags |= MV_HP_ERRATA_60X1C0;
1720 dev_printk(KERN_WARNING, &pdev->dev,
1721 "Applying B2 workarounds to unknown rev\n");
1722 hp_flags |= MV_HP_ERRATA_60X1B2;
1728 printk(KERN_ERR DRV_NAME ": BUG: invalid board index %u\n", board_idx);
1732 hpriv->hp_flags = hp_flags;
1738 * mv_init_host - Perform some early initialization of the host.
1739 * @pdev: host PCI device
1740 * @probe_ent: early data struct representing the host
1742 * If possible, do an early global reset of the host. Then do
1743 * our port init and clear/unmask all/relevant host interrupts.
1746 * Inherited from caller.
1748 static int mv_init_host(struct pci_dev *pdev, struct ata_probe_ent *probe_ent,
1749 unsigned int board_idx)
1751 int rc = 0, n_hc, port, hc;
1752 void __iomem *mmio = probe_ent->mmio_base;
1753 struct mv_host_priv *hpriv = probe_ent->private_data;
1755 /* global interrupt mask */
1756 writel(0, mmio + HC_MAIN_IRQ_MASK_OFS);
1758 rc = mv_chip_id(pdev, hpriv, board_idx);
1762 n_hc = mv_get_hc_count(probe_ent->host_flags);
1763 probe_ent->n_ports = MV_PORTS_PER_HC * n_hc;
1765 for (port = 0; port < probe_ent->n_ports; port++)
1766 hpriv->ops->read_preamp(hpriv, port, mmio);
1768 rc = hpriv->ops->reset_hc(hpriv, mmio);
1772 hpriv->ops->reset_flash(hpriv, mmio);
1773 hpriv->ops->reset_bus(pdev, mmio);
1774 hpriv->ops->enable_leds(hpriv, mmio);
1776 for (port = 0; port < probe_ent->n_ports; port++) {
1777 void __iomem *port_mmio = mv_port_base(mmio, port);
1779 if (IS_60XX(hpriv)) {
1780 u32 ifctl = readl(port_mmio + SATA_INTERFACE_CTL);
1782 writelfl(ifctl, port_mmio + SATA_INTERFACE_CTL);
1785 hpriv->ops->phy_errata(hpriv, port_mmio, port);
1788 for (port = 0; port < probe_ent->n_ports; port++) {
1789 void __iomem *port_mmio = mv_port_base(mmio, port);
1790 mv_port_init(&probe_ent->port[port], port_mmio);
1793 for (hc = 0; hc < n_hc; hc++) {
1794 void __iomem *hc_mmio = mv_hc_base(mmio, hc);
1796 VPRINTK("HC%i: HC config=0x%08x HC IRQ cause "
1797 "(before clear)=0x%08x\n", hc,
1798 readl(hc_mmio + HC_CFG_OFS),
1799 readl(hc_mmio + HC_IRQ_CAUSE_OFS));
1801 /* Clear any currently outstanding hc interrupt conditions */
1802 writelfl(0, hc_mmio + HC_IRQ_CAUSE_OFS);
1805 /* Clear any currently outstanding host interrupt conditions */
1806 writelfl(0, mmio + PCI_IRQ_CAUSE_OFS);
1808 /* and unmask interrupt generation for host regs */
1809 writelfl(PCI_UNMASK_ALL_IRQS, mmio + PCI_IRQ_MASK_OFS);
1810 writelfl(~HC_MAIN_MASKED_IRQS, mmio + HC_MAIN_IRQ_MASK_OFS);
1812 VPRINTK("HC MAIN IRQ cause/mask=0x%08x/0x%08x "
1813 "PCI int cause/mask=0x%08x/0x%08x\n",
1814 readl(mmio + HC_MAIN_IRQ_CAUSE_OFS),
1815 readl(mmio + HC_MAIN_IRQ_MASK_OFS),
1816 readl(mmio + PCI_IRQ_CAUSE_OFS),
1817 readl(mmio + PCI_IRQ_MASK_OFS));
1824 * mv_print_info - Dump key info to kernel log for perusal.
1825 * @probe_ent: early data struct representing the host
1827 * FIXME: complete this.
1830 * Inherited from caller.
1832 static void mv_print_info(struct ata_probe_ent *probe_ent)
1834 struct pci_dev *pdev = to_pci_dev(probe_ent->dev);
1835 struct mv_host_priv *hpriv = probe_ent->private_data;
1839 /* Use this to determine the HW stepping of the chip so we know
1840 * what errata to workaround
1842 pci_read_config_byte(pdev, PCI_REVISION_ID, &rev_id);
1844 pci_read_config_byte(pdev, PCI_CLASS_DEVICE, &scc);
1847 else if (scc == 0x01)
1852 dev_printk(KERN_INFO, &pdev->dev,
1853 "%u slots %u ports %s mode IRQ via %s\n",
1854 (unsigned)MV_MAX_Q_DEPTH, probe_ent->n_ports,
1855 scc_s, (MV_HP_FLAG_MSI & hpriv->hp_flags) ? "MSI" : "INTx");
1859 * mv_init_one - handle a positive probe of a Marvell host
1860 * @pdev: PCI device found
1861 * @ent: PCI device ID entry for the matched host
1864 * Inherited from caller.
1866 static int mv_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
1868 static int printed_version = 0;
1869 struct ata_probe_ent *probe_ent = NULL;
1870 struct mv_host_priv *hpriv;
1871 unsigned int board_idx = (unsigned int)ent->driver_data;
1872 void __iomem *mmio_base;
1873 int pci_dev_busy = 0, rc;
1875 if (!printed_version++)
1876 dev_printk(KERN_INFO, &pdev->dev, "version " DRV_VERSION "\n");
1878 rc = pci_enable_device(pdev);
1883 rc = pci_request_regions(pdev, DRV_NAME);
1889 probe_ent = kmalloc(sizeof(*probe_ent), GFP_KERNEL);
1890 if (probe_ent == NULL) {
1892 goto err_out_regions;
1895 memset(probe_ent, 0, sizeof(*probe_ent));
1896 probe_ent->dev = pci_dev_to_dev(pdev);
1897 INIT_LIST_HEAD(&probe_ent->node);
1899 mmio_base = pci_iomap(pdev, MV_PRIMARY_BAR, 0);
1900 if (mmio_base == NULL) {
1902 goto err_out_free_ent;
1905 hpriv = kmalloc(sizeof(*hpriv), GFP_KERNEL);
1908 goto err_out_iounmap;
1910 memset(hpriv, 0, sizeof(*hpriv));
1912 probe_ent->sht = mv_port_info[board_idx].sht;
1913 probe_ent->host_flags = mv_port_info[board_idx].host_flags;
1914 probe_ent->pio_mask = mv_port_info[board_idx].pio_mask;
1915 probe_ent->udma_mask = mv_port_info[board_idx].udma_mask;
1916 probe_ent->port_ops = mv_port_info[board_idx].port_ops;
1918 probe_ent->irq = pdev->irq;
1919 probe_ent->irq_flags = SA_SHIRQ;
1920 probe_ent->mmio_base = mmio_base;
1921 probe_ent->private_data = hpriv;
1923 /* initialize adapter */
1924 rc = mv_init_host(pdev, probe_ent, board_idx);
1929 /* Enable interrupts */
1930 if (pci_enable_msi(pdev) == 0) {
1931 hpriv->hp_flags |= MV_HP_FLAG_MSI;
1936 mv_dump_pci_cfg(pdev, 0x68);
1937 mv_print_info(probe_ent);
1939 if (ata_device_add(probe_ent) == 0) {
1940 rc = -ENODEV; /* No devices discovered */
1941 goto err_out_dev_add;
1948 if (MV_HP_FLAG_MSI & hpriv->hp_flags) {
1949 pci_disable_msi(pdev);
1956 pci_iounmap(pdev, mmio_base);
1960 pci_release_regions(pdev);
1962 if (!pci_dev_busy) {
1963 pci_disable_device(pdev);
1969 static int __init mv_init(void)
1971 return pci_module_init(&mv_pci_driver);
1974 static void __exit mv_exit(void)
1976 pci_unregister_driver(&mv_pci_driver);
1979 MODULE_AUTHOR("Brett Russ");
1980 MODULE_DESCRIPTION("SCSI low-level driver for Marvell SATA controllers");
1981 MODULE_LICENSE("GPL");
1982 MODULE_DEVICE_TABLE(pci, mv_pci_tbl);
1983 MODULE_VERSION(DRV_VERSION);
1985 module_init(mv_init);
1986 module_exit(mv_exit);