1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * sata_promise.c - Promise SATA
5 * Maintained by: Tejun Heo <tj@kernel.org>
7 * Please ALWAYS copy linux-ide@vger.kernel.org
10 * Copyright 2003-2004 Red Hat, Inc.
12 * libata documentation is available via 'make {ps|pdf}docs',
13 * as Documentation/driver-api/libata.rst
15 * Hardware information only available under NDA.
18 #include <linux/kernel.h>
19 #include <linux/module.h>
20 #include <linux/gfp.h>
21 #include <linux/pci.h>
22 #include <linux/blkdev.h>
23 #include <linux/delay.h>
24 #include <linux/interrupt.h>
25 #include <linux/device.h>
26 #include <scsi/scsi.h>
27 #include <scsi/scsi_host.h>
28 #include <scsi/scsi_cmnd.h>
29 #include <linux/libata.h>
30 #include "sata_promise.h"
32 #define DRV_NAME "sata_promise"
33 #define DRV_VERSION "2.12"
38 PDC_MAX_PRD = LIBATA_MAX_PRD - 1, /* -1 for ASIC PRD bug workaround */
40 /* host register offsets (from host->iomap[PDC_MMIO_BAR]) */
41 PDC_INT_SEQMASK = 0x40, /* Mask of asserted SEQ INTs */
42 PDC_FLASH_CTL = 0x44, /* Flash control register */
43 PDC_PCI_CTL = 0x48, /* PCI control/status reg */
44 PDC_SATA_PLUG_CSR = 0x6C, /* SATA Plug control/status reg */
45 PDC2_SATA_PLUG_CSR = 0x60, /* SATAII Plug control/status reg */
46 PDC_TBG_MODE = 0x41C, /* TBG mode (not SATAII) */
47 PDC_SLEW_CTL = 0x470, /* slew rate control reg (not SATAII) */
49 /* per-port ATA register offsets (from ap->ioaddr.cmd_addr) */
50 PDC_FEATURE = 0x04, /* Feature/Error reg (per port) */
51 PDC_SECTOR_COUNT = 0x08, /* Sector count reg (per port) */
52 PDC_SECTOR_NUMBER = 0x0C, /* Sector number reg (per port) */
53 PDC_CYLINDER_LOW = 0x10, /* Cylinder low reg (per port) */
54 PDC_CYLINDER_HIGH = 0x14, /* Cylinder high reg (per port) */
55 PDC_DEVICE = 0x18, /* Device/Head reg (per port) */
56 PDC_COMMAND = 0x1C, /* Command/status reg (per port) */
57 PDC_ALTSTATUS = 0x38, /* Alternate-status/device-control reg (per port) */
58 PDC_PKT_SUBMIT = 0x40, /* Command packet pointer addr */
59 PDC_GLOBAL_CTL = 0x48, /* Global control/status (per port) */
60 PDC_CTLSTAT = 0x60, /* IDE control and status (per port) */
62 /* per-port SATA register offsets (from ap->ioaddr.scr_addr) */
63 PDC_SATA_ERROR = 0x04,
65 PDC_LINK_LAYER_ERRORS = 0x6C,
66 PDC_FPDMA_CTLSTAT = 0xD8,
67 PDC_INTERNAL_DEBUG_1 = 0xF8, /* also used for PATA */
68 PDC_INTERNAL_DEBUG_2 = 0xFC, /* also used for PATA */
70 /* PDC_FPDMA_CTLSTAT bit definitions */
71 PDC_FPDMA_CTLSTAT_RESET = 1 << 3,
72 PDC_FPDMA_CTLSTAT_DMASETUP_INT_FLAG = 1 << 10,
73 PDC_FPDMA_CTLSTAT_SETDB_INT_FLAG = 1 << 11,
75 /* PDC_GLOBAL_CTL bit definitions */
76 PDC_PH_ERR = (1 << 8), /* PCI error while loading packet */
77 PDC_SH_ERR = (1 << 9), /* PCI error while loading S/G table */
78 PDC_DH_ERR = (1 << 10), /* PCI error while loading data */
79 PDC2_HTO_ERR = (1 << 12), /* host bus timeout */
80 PDC2_ATA_HBA_ERR = (1 << 13), /* error during SATA DATA FIS transmission */
81 PDC2_ATA_DMA_CNT_ERR = (1 << 14), /* DMA DATA FIS size differs from S/G count */
82 PDC_OVERRUN_ERR = (1 << 19), /* S/G byte count larger than HD requires */
83 PDC_UNDERRUN_ERR = (1 << 20), /* S/G byte count less than HD requires */
84 PDC_DRIVE_ERR = (1 << 21), /* drive error */
85 PDC_PCI_SYS_ERR = (1 << 22), /* PCI system error */
86 PDC1_PCI_PARITY_ERR = (1 << 23), /* PCI parity error (from SATA150 driver) */
87 PDC1_ERR_MASK = PDC1_PCI_PARITY_ERR,
88 PDC2_ERR_MASK = PDC2_HTO_ERR | PDC2_ATA_HBA_ERR |
90 PDC_ERR_MASK = PDC_PH_ERR | PDC_SH_ERR | PDC_DH_ERR |
91 PDC_OVERRUN_ERR | PDC_UNDERRUN_ERR |
92 PDC_DRIVE_ERR | PDC_PCI_SYS_ERR |
93 PDC1_ERR_MASK | PDC2_ERR_MASK,
95 board_2037x = 0, /* FastTrak S150 TX2plus */
96 board_2037x_pata = 1, /* FastTrak S150 TX2plus PATA port */
97 board_20319 = 2, /* FastTrak S150 TX4 */
98 board_20619 = 3, /* FastTrak TX4000 */
99 board_2057x = 4, /* SATAII150 Tx2plus */
100 board_2057x_pata = 5, /* SATAII150 Tx2plus PATA port */
101 board_40518 = 6, /* SATAII150 Tx4 */
103 PDC_HAS_PATA = (1 << 1), /* PDC20375/20575 has PATA */
105 /* Sequence counter control registers bit definitions */
106 PDC_SEQCNTRL_INT_MASK = (1 << 5), /* Sequence Interrupt Mask */
108 /* Feature register values */
109 PDC_FEATURE_ATAPI_PIO = 0x00, /* ATAPI data xfer by PIO */
110 PDC_FEATURE_ATAPI_DMA = 0x01, /* ATAPI data xfer by DMA */
112 /* Device/Head register values */
113 PDC_DEVICE_SATA = 0xE0, /* Device/Head value for SATA devices */
115 /* PDC_CTLSTAT bit definitions */
116 PDC_DMA_ENABLE = (1 << 7),
117 PDC_IRQ_DISABLE = (1 << 10),
118 PDC_RESET = (1 << 11), /* HDMA reset */
120 PDC_COMMON_FLAGS = ATA_FLAG_PIO_POLLING,
123 PDC_FLAG_GEN_II = (1 << 24),
124 PDC_FLAG_SATA_PATA = (1 << 25), /* supports SATA + PATA */
125 PDC_FLAG_4_PORTS = (1 << 26), /* 4 ports */
128 struct pdc_port_priv {
133 struct pdc_host_priv {
134 spinlock_t hard_reset_lock;
137 static int pdc_sata_scr_read(struct ata_link *link, unsigned int sc_reg, u32 *val);
138 static int pdc_sata_scr_write(struct ata_link *link, unsigned int sc_reg, u32 val);
139 static int pdc_ata_init_one(struct pci_dev *pdev, const struct pci_device_id *ent);
140 static int pdc_common_port_start(struct ata_port *ap);
141 static int pdc_sata_port_start(struct ata_port *ap);
142 static enum ata_completion_errors pdc_qc_prep(struct ata_queued_cmd *qc);
143 static void pdc_tf_load_mmio(struct ata_port *ap, const struct ata_taskfile *tf);
144 static void pdc_exec_command_mmio(struct ata_port *ap, const struct ata_taskfile *tf);
145 static int pdc_check_atapi_dma(struct ata_queued_cmd *qc);
146 static int pdc_old_sata_check_atapi_dma(struct ata_queued_cmd *qc);
147 static void pdc_irq_clear(struct ata_port *ap);
148 static unsigned int pdc_qc_issue(struct ata_queued_cmd *qc);
149 static void pdc_freeze(struct ata_port *ap);
150 static void pdc_sata_freeze(struct ata_port *ap);
151 static void pdc_thaw(struct ata_port *ap);
152 static void pdc_sata_thaw(struct ata_port *ap);
153 static int pdc_pata_softreset(struct ata_link *link, unsigned int *class,
154 unsigned long deadline);
155 static int pdc_sata_hardreset(struct ata_link *link, unsigned int *class,
156 unsigned long deadline);
157 static void pdc_error_handler(struct ata_port *ap);
158 static void pdc_post_internal_cmd(struct ata_queued_cmd *qc);
159 static int pdc_pata_cable_detect(struct ata_port *ap);
161 static struct scsi_host_template pdc_ata_sht = {
162 ATA_BASE_SHT(DRV_NAME),
163 .sg_tablesize = PDC_MAX_PRD,
164 .dma_boundary = ATA_DMA_BOUNDARY,
167 static const struct ata_port_operations pdc_common_ops = {
168 .inherits = &ata_sff_port_ops,
170 .sff_tf_load = pdc_tf_load_mmio,
171 .sff_exec_command = pdc_exec_command_mmio,
172 .check_atapi_dma = pdc_check_atapi_dma,
173 .qc_prep = pdc_qc_prep,
174 .qc_issue = pdc_qc_issue,
176 .sff_irq_clear = pdc_irq_clear,
177 .lost_interrupt = ATA_OP_NULL,
179 .post_internal_cmd = pdc_post_internal_cmd,
180 .error_handler = pdc_error_handler,
183 static struct ata_port_operations pdc_sata_ops = {
184 .inherits = &pdc_common_ops,
185 .cable_detect = ata_cable_sata,
186 .freeze = pdc_sata_freeze,
187 .thaw = pdc_sata_thaw,
188 .scr_read = pdc_sata_scr_read,
189 .scr_write = pdc_sata_scr_write,
190 .port_start = pdc_sata_port_start,
191 .hardreset = pdc_sata_hardreset,
194 /* First-generation chips need a more restrictive ->check_atapi_dma op,
195 and ->freeze/thaw that ignore the hotplug controls. */
196 static struct ata_port_operations pdc_old_sata_ops = {
197 .inherits = &pdc_sata_ops,
198 .freeze = pdc_freeze,
200 .check_atapi_dma = pdc_old_sata_check_atapi_dma,
203 static struct ata_port_operations pdc_pata_ops = {
204 .inherits = &pdc_common_ops,
205 .cable_detect = pdc_pata_cable_detect,
206 .freeze = pdc_freeze,
208 .port_start = pdc_common_port_start,
209 .softreset = pdc_pata_softreset,
212 static const struct ata_port_info pdc_port_info[] = {
215 .flags = PDC_COMMON_FLAGS | ATA_FLAG_SATA |
217 .pio_mask = ATA_PIO4,
218 .mwdma_mask = ATA_MWDMA2,
219 .udma_mask = ATA_UDMA6,
220 .port_ops = &pdc_old_sata_ops,
225 .flags = PDC_COMMON_FLAGS | ATA_FLAG_SLAVE_POSS,
226 .pio_mask = ATA_PIO4,
227 .mwdma_mask = ATA_MWDMA2,
228 .udma_mask = ATA_UDMA6,
229 .port_ops = &pdc_pata_ops,
234 .flags = PDC_COMMON_FLAGS | ATA_FLAG_SATA |
236 .pio_mask = ATA_PIO4,
237 .mwdma_mask = ATA_MWDMA2,
238 .udma_mask = ATA_UDMA6,
239 .port_ops = &pdc_old_sata_ops,
244 .flags = PDC_COMMON_FLAGS | ATA_FLAG_SLAVE_POSS |
246 .pio_mask = ATA_PIO4,
247 .mwdma_mask = ATA_MWDMA2,
248 .udma_mask = ATA_UDMA6,
249 .port_ops = &pdc_pata_ops,
254 .flags = PDC_COMMON_FLAGS | ATA_FLAG_SATA |
255 PDC_FLAG_GEN_II | PDC_FLAG_SATA_PATA,
256 .pio_mask = ATA_PIO4,
257 .mwdma_mask = ATA_MWDMA2,
258 .udma_mask = ATA_UDMA6,
259 .port_ops = &pdc_sata_ops,
264 .flags = PDC_COMMON_FLAGS | ATA_FLAG_SLAVE_POSS |
266 .pio_mask = ATA_PIO4,
267 .mwdma_mask = ATA_MWDMA2,
268 .udma_mask = ATA_UDMA6,
269 .port_ops = &pdc_pata_ops,
274 .flags = PDC_COMMON_FLAGS | ATA_FLAG_SATA |
275 PDC_FLAG_GEN_II | PDC_FLAG_4_PORTS,
276 .pio_mask = ATA_PIO4,
277 .mwdma_mask = ATA_MWDMA2,
278 .udma_mask = ATA_UDMA6,
279 .port_ops = &pdc_sata_ops,
283 static const struct pci_device_id pdc_ata_pci_tbl[] = {
284 { PCI_VDEVICE(PROMISE, 0x3371), board_2037x },
285 { PCI_VDEVICE(PROMISE, 0x3373), board_2037x },
286 { PCI_VDEVICE(PROMISE, 0x3375), board_2037x },
287 { PCI_VDEVICE(PROMISE, 0x3376), board_2037x },
288 { PCI_VDEVICE(PROMISE, 0x3570), board_2057x },
289 { PCI_VDEVICE(PROMISE, 0x3571), board_2057x },
290 { PCI_VDEVICE(PROMISE, 0x3574), board_2057x },
291 { PCI_VDEVICE(PROMISE, 0x3577), board_2057x },
292 { PCI_VDEVICE(PROMISE, 0x3d73), board_2057x },
293 { PCI_VDEVICE(PROMISE, 0x3d75), board_2057x },
295 { PCI_VDEVICE(PROMISE, 0x3318), board_20319 },
296 { PCI_VDEVICE(PROMISE, 0x3319), board_20319 },
297 { PCI_VDEVICE(PROMISE, 0x3515), board_40518 },
298 { PCI_VDEVICE(PROMISE, 0x3519), board_40518 },
299 { PCI_VDEVICE(PROMISE, 0x3d17), board_40518 },
300 { PCI_VDEVICE(PROMISE, 0x3d18), board_40518 },
302 { PCI_VDEVICE(PROMISE, 0x6629), board_20619 },
304 { } /* terminate list */
307 static struct pci_driver pdc_ata_pci_driver = {
309 .id_table = pdc_ata_pci_tbl,
310 .probe = pdc_ata_init_one,
311 .remove = ata_pci_remove_one,
314 static int pdc_common_port_start(struct ata_port *ap)
316 struct device *dev = ap->host->dev;
317 struct pdc_port_priv *pp;
320 /* we use the same prd table as bmdma, allocate it */
321 rc = ata_bmdma_port_start(ap);
325 pp = devm_kzalloc(dev, sizeof(*pp), GFP_KERNEL);
329 pp->pkt = dmam_alloc_coherent(dev, 128, &pp->pkt_dma, GFP_KERNEL);
333 ap->private_data = pp;
338 static int pdc_sata_port_start(struct ata_port *ap)
342 rc = pdc_common_port_start(ap);
346 /* fix up PHYMODE4 align timing */
347 if (ap->flags & PDC_FLAG_GEN_II) {
348 void __iomem *sata_mmio = ap->ioaddr.scr_addr;
351 tmp = readl(sata_mmio + PDC_PHYMODE4);
352 tmp = (tmp & ~3) | 1; /* set bits 1:0 = 0:1 */
353 writel(tmp, sata_mmio + PDC_PHYMODE4);
359 static void pdc_fpdma_clear_interrupt_flag(struct ata_port *ap)
361 void __iomem *sata_mmio = ap->ioaddr.scr_addr;
364 tmp = readl(sata_mmio + PDC_FPDMA_CTLSTAT);
365 tmp |= PDC_FPDMA_CTLSTAT_DMASETUP_INT_FLAG;
366 tmp |= PDC_FPDMA_CTLSTAT_SETDB_INT_FLAG;
368 /* It's not allowed to write to the entire FPDMA_CTLSTAT register
369 when NCQ is running. So do a byte-sized write to bits 10 and 11. */
370 writeb(tmp >> 8, sata_mmio + PDC_FPDMA_CTLSTAT + 1);
371 readb(sata_mmio + PDC_FPDMA_CTLSTAT + 1); /* flush */
374 static void pdc_fpdma_reset(struct ata_port *ap)
376 void __iomem *sata_mmio = ap->ioaddr.scr_addr;
379 tmp = (u8)readl(sata_mmio + PDC_FPDMA_CTLSTAT);
381 tmp |= PDC_FPDMA_CTLSTAT_RESET;
382 writeb(tmp, sata_mmio + PDC_FPDMA_CTLSTAT);
383 readl(sata_mmio + PDC_FPDMA_CTLSTAT); /* flush */
385 tmp &= ~PDC_FPDMA_CTLSTAT_RESET;
386 writeb(tmp, sata_mmio + PDC_FPDMA_CTLSTAT);
387 readl(sata_mmio + PDC_FPDMA_CTLSTAT); /* flush */
389 pdc_fpdma_clear_interrupt_flag(ap);
392 static void pdc_not_at_command_packet_phase(struct ata_port *ap)
394 void __iomem *sata_mmio = ap->ioaddr.scr_addr;
398 /* check not at ASIC packet command phase */
399 for (i = 0; i < 100; ++i) {
400 writel(0, sata_mmio + PDC_INTERNAL_DEBUG_1);
401 tmp = readl(sata_mmio + PDC_INTERNAL_DEBUG_2);
402 if ((tmp & 0xF) != 1)
408 static void pdc_clear_internal_debug_record_error_register(struct ata_port *ap)
410 void __iomem *sata_mmio = ap->ioaddr.scr_addr;
412 writel(0xffffffff, sata_mmio + PDC_SATA_ERROR);
413 writel(0xffff0000, sata_mmio + PDC_LINK_LAYER_ERRORS);
416 static void pdc_reset_port(struct ata_port *ap)
418 void __iomem *ata_ctlstat_mmio = ap->ioaddr.cmd_addr + PDC_CTLSTAT;
422 if (ap->flags & PDC_FLAG_GEN_II)
423 pdc_not_at_command_packet_phase(ap);
425 tmp = readl(ata_ctlstat_mmio);
427 writel(tmp, ata_ctlstat_mmio);
429 for (i = 11; i > 0; i--) {
430 tmp = readl(ata_ctlstat_mmio);
437 writel(tmp, ata_ctlstat_mmio);
441 writel(tmp, ata_ctlstat_mmio);
442 readl(ata_ctlstat_mmio); /* flush */
444 if (sata_scr_valid(&ap->link) && (ap->flags & PDC_FLAG_GEN_II)) {
446 pdc_clear_internal_debug_record_error_register(ap);
450 static int pdc_pata_cable_detect(struct ata_port *ap)
453 void __iomem *ata_mmio = ap->ioaddr.cmd_addr;
455 tmp = readb(ata_mmio + PDC_CTLSTAT + 3);
457 return ATA_CBL_PATA40;
458 return ATA_CBL_PATA80;
461 static int pdc_sata_scr_read(struct ata_link *link,
462 unsigned int sc_reg, u32 *val)
464 if (sc_reg > SCR_CONTROL)
466 *val = readl(link->ap->ioaddr.scr_addr + (sc_reg * 4));
470 static int pdc_sata_scr_write(struct ata_link *link,
471 unsigned int sc_reg, u32 val)
473 if (sc_reg > SCR_CONTROL)
475 writel(val, link->ap->ioaddr.scr_addr + (sc_reg * 4));
479 static void pdc_atapi_pkt(struct ata_queued_cmd *qc)
481 struct ata_port *ap = qc->ap;
482 dma_addr_t sg_table = ap->bmdma_prd_dma;
483 unsigned int cdb_len = qc->dev->cdb_len;
485 struct pdc_port_priv *pp = ap->private_data;
487 __le32 *buf32 = (__le32 *) buf;
488 unsigned int dev_sel, feature;
490 /* set control bits (byte 0), zero delay seq id (byte 3),
491 * and seq id (byte 2)
493 switch (qc->tf.protocol) {
495 if (!(qc->tf.flags & ATA_TFLAG_WRITE))
496 buf32[0] = cpu_to_le32(PDC_PKT_READ);
500 case ATAPI_PROT_NODATA:
501 buf32[0] = cpu_to_le32(PDC_PKT_NODATA);
507 buf32[1] = cpu_to_le32(sg_table); /* S/G table addr */
508 buf32[2] = 0; /* no next-packet */
511 if (sata_scr_valid(&ap->link))
512 dev_sel = PDC_DEVICE_SATA;
514 dev_sel = qc->tf.device;
516 buf[12] = (1 << 5) | ATA_REG_DEVICE;
518 buf[14] = (1 << 5) | ATA_REG_DEVICE | PDC_PKT_CLEAR_BSY;
519 buf[15] = dev_sel; /* once more, waiting for BSY to clear */
521 buf[16] = (1 << 5) | ATA_REG_NSECT;
522 buf[17] = qc->tf.nsect;
523 buf[18] = (1 << 5) | ATA_REG_LBAL;
524 buf[19] = qc->tf.lbal;
526 /* set feature and byte counter registers */
527 if (qc->tf.protocol != ATAPI_PROT_DMA)
528 feature = PDC_FEATURE_ATAPI_PIO;
530 feature = PDC_FEATURE_ATAPI_DMA;
532 buf[20] = (1 << 5) | ATA_REG_FEATURE;
534 buf[22] = (1 << 5) | ATA_REG_BYTEL;
535 buf[23] = qc->tf.lbam;
536 buf[24] = (1 << 5) | ATA_REG_BYTEH;
537 buf[25] = qc->tf.lbah;
539 /* send ATAPI packet command 0xA0 */
540 buf[26] = (1 << 5) | ATA_REG_CMD;
541 buf[27] = qc->tf.command;
543 /* select drive and check DRQ */
544 buf[28] = (1 << 5) | ATA_REG_DEVICE | PDC_PKT_WAIT_DRDY;
547 /* we can represent cdb lengths 2/4/6/8/10/12/14/16 */
548 BUG_ON(cdb_len & ~0x1E);
550 /* append the CDB as the final part */
551 buf[30] = (((cdb_len >> 1) & 7) << 5) | ATA_REG_DATA | PDC_LAST_REG;
552 memcpy(buf+31, cdb, cdb_len);
556 * pdc_fill_sg - Fill PCI IDE PRD table
557 * @qc: Metadata associated with taskfile to be transferred
559 * Fill PCI IDE PRD (scatter-gather) table with segments
560 * associated with the current disk command.
561 * Make sure hardware does not choke on it.
564 * spin_lock_irqsave(host lock)
567 static void pdc_fill_sg(struct ata_queued_cmd *qc)
569 struct ata_port *ap = qc->ap;
570 struct ata_bmdma_prd *prd = ap->bmdma_prd;
571 struct scatterlist *sg;
572 const u32 SG_COUNT_ASIC_BUG = 41*4;
573 unsigned int si, idx;
576 if (!(qc->flags & ATA_QCFLAG_DMAMAP))
580 for_each_sg(qc->sg, sg, qc->n_elem, si) {
584 /* determine if physical DMA addr spans 64K boundary.
585 * Note h/w doesn't support 64-bit, so we unconditionally
586 * truncate dma_addr_t to u32.
588 addr = (u32) sg_dma_address(sg);
589 sg_len = sg_dma_len(sg);
592 offset = addr & 0xffff;
594 if ((offset + sg_len) > 0x10000)
595 len = 0x10000 - offset;
597 prd[idx].addr = cpu_to_le32(addr);
598 prd[idx].flags_len = cpu_to_le32(len & 0xffff);
599 VPRINTK("PRD[%u] = (0x%X, 0x%X)\n", idx, addr, len);
607 len = le32_to_cpu(prd[idx - 1].flags_len);
609 if (len > SG_COUNT_ASIC_BUG) {
612 VPRINTK("Splitting last PRD.\n");
614 addr = le32_to_cpu(prd[idx - 1].addr);
615 prd[idx - 1].flags_len = cpu_to_le32(len - SG_COUNT_ASIC_BUG);
616 VPRINTK("PRD[%u] = (0x%X, 0x%X)\n", idx - 1, addr, SG_COUNT_ASIC_BUG);
618 addr = addr + len - SG_COUNT_ASIC_BUG;
619 len = SG_COUNT_ASIC_BUG;
620 prd[idx].addr = cpu_to_le32(addr);
621 prd[idx].flags_len = cpu_to_le32(len);
622 VPRINTK("PRD[%u] = (0x%X, 0x%X)\n", idx, addr, len);
627 prd[idx - 1].flags_len |= cpu_to_le32(ATA_PRD_EOT);
630 static enum ata_completion_errors pdc_qc_prep(struct ata_queued_cmd *qc)
632 struct pdc_port_priv *pp = qc->ap->private_data;
637 switch (qc->tf.protocol) {
641 case ATA_PROT_NODATA:
642 i = pdc_pkt_header(&qc->tf, qc->ap->bmdma_prd_dma,
643 qc->dev->devno, pp->pkt);
644 if (qc->tf.flags & ATA_TFLAG_LBA48)
645 i = pdc_prep_lba48(&qc->tf, pp->pkt, i);
647 i = pdc_prep_lba28(&qc->tf, pp->pkt, i);
648 pdc_pkt_footer(&qc->tf, pp->pkt, i);
656 case ATAPI_PROT_NODATA:
666 static int pdc_is_sataii_tx4(unsigned long flags)
668 const unsigned long mask = PDC_FLAG_GEN_II | PDC_FLAG_4_PORTS;
669 return (flags & mask) == mask;
672 static unsigned int pdc_port_no_to_ata_no(unsigned int port_no,
675 static const unsigned char sataii_tx4_port_remap[4] = { 3, 1, 0, 2};
676 return is_sataii_tx4 ? sataii_tx4_port_remap[port_no] : port_no;
679 static unsigned int pdc_sata_nr_ports(const struct ata_port *ap)
681 return (ap->flags & PDC_FLAG_4_PORTS) ? 4 : 2;
684 static unsigned int pdc_sata_ata_port_to_ata_no(const struct ata_port *ap)
686 const struct ata_host *host = ap->host;
687 unsigned int nr_ports = pdc_sata_nr_ports(ap);
690 for (i = 0; i < nr_ports && host->ports[i] != ap; ++i)
692 BUG_ON(i >= nr_ports);
693 return pdc_port_no_to_ata_no(i, pdc_is_sataii_tx4(ap->flags));
696 static void pdc_freeze(struct ata_port *ap)
698 void __iomem *ata_mmio = ap->ioaddr.cmd_addr;
701 tmp = readl(ata_mmio + PDC_CTLSTAT);
702 tmp |= PDC_IRQ_DISABLE;
703 tmp &= ~PDC_DMA_ENABLE;
704 writel(tmp, ata_mmio + PDC_CTLSTAT);
705 readl(ata_mmio + PDC_CTLSTAT); /* flush */
708 static void pdc_sata_freeze(struct ata_port *ap)
710 struct ata_host *host = ap->host;
711 void __iomem *host_mmio = host->iomap[PDC_MMIO_BAR];
712 unsigned int hotplug_offset = PDC2_SATA_PLUG_CSR;
713 unsigned int ata_no = pdc_sata_ata_port_to_ata_no(ap);
716 /* Disable hotplug events on this port.
719 * 1) hotplug register accesses must be serialised via host->lock
720 * 2) ap->lock == &ap->host->lock
721 * 3) ->freeze() and ->thaw() are called with ap->lock held
723 hotplug_status = readl(host_mmio + hotplug_offset);
724 hotplug_status |= 0x11 << (ata_no + 16);
725 writel(hotplug_status, host_mmio + hotplug_offset);
726 readl(host_mmio + hotplug_offset); /* flush */
731 static void pdc_thaw(struct ata_port *ap)
733 void __iomem *ata_mmio = ap->ioaddr.cmd_addr;
737 readl(ata_mmio + PDC_COMMAND);
739 /* turn IRQ back on */
740 tmp = readl(ata_mmio + PDC_CTLSTAT);
741 tmp &= ~PDC_IRQ_DISABLE;
742 writel(tmp, ata_mmio + PDC_CTLSTAT);
743 readl(ata_mmio + PDC_CTLSTAT); /* flush */
746 static void pdc_sata_thaw(struct ata_port *ap)
748 struct ata_host *host = ap->host;
749 void __iomem *host_mmio = host->iomap[PDC_MMIO_BAR];
750 unsigned int hotplug_offset = PDC2_SATA_PLUG_CSR;
751 unsigned int ata_no = pdc_sata_ata_port_to_ata_no(ap);
756 /* Enable hotplug events on this port.
757 * Locking: see pdc_sata_freeze().
759 hotplug_status = readl(host_mmio + hotplug_offset);
760 hotplug_status |= 0x11 << ata_no;
761 hotplug_status &= ~(0x11 << (ata_no + 16));
762 writel(hotplug_status, host_mmio + hotplug_offset);
763 readl(host_mmio + hotplug_offset); /* flush */
766 static int pdc_pata_softreset(struct ata_link *link, unsigned int *class,
767 unsigned long deadline)
769 pdc_reset_port(link->ap);
770 return ata_sff_softreset(link, class, deadline);
773 static unsigned int pdc_ata_port_to_ata_no(const struct ata_port *ap)
775 void __iomem *ata_mmio = ap->ioaddr.cmd_addr;
776 void __iomem *host_mmio = ap->host->iomap[PDC_MMIO_BAR];
778 /* ata_mmio == host_mmio + 0x200 + ata_no * 0x80 */
779 return (ata_mmio - host_mmio - 0x200) / 0x80;
782 static void pdc_hard_reset_port(struct ata_port *ap)
784 void __iomem *host_mmio = ap->host->iomap[PDC_MMIO_BAR];
785 void __iomem *pcictl_b1_mmio = host_mmio + PDC_PCI_CTL + 1;
786 unsigned int ata_no = pdc_ata_port_to_ata_no(ap);
787 struct pdc_host_priv *hpriv = ap->host->private_data;
790 spin_lock(&hpriv->hard_reset_lock);
792 tmp = readb(pcictl_b1_mmio);
793 tmp &= ~(0x10 << ata_no);
794 writeb(tmp, pcictl_b1_mmio);
795 readb(pcictl_b1_mmio); /* flush */
797 tmp |= (0x10 << ata_no);
798 writeb(tmp, pcictl_b1_mmio);
799 readb(pcictl_b1_mmio); /* flush */
801 spin_unlock(&hpriv->hard_reset_lock);
804 static int pdc_sata_hardreset(struct ata_link *link, unsigned int *class,
805 unsigned long deadline)
807 if (link->ap->flags & PDC_FLAG_GEN_II)
808 pdc_not_at_command_packet_phase(link->ap);
809 /* hotplug IRQs should have been masked by pdc_sata_freeze() */
810 pdc_hard_reset_port(link->ap);
811 pdc_reset_port(link->ap);
813 /* sata_promise can't reliably acquire the first D2H Reg FIS
814 * after hardreset. Do non-waiting hardreset and request
817 return sata_std_hardreset(link, class, deadline);
820 static void pdc_error_handler(struct ata_port *ap)
822 if (!(ap->pflags & ATA_PFLAG_FROZEN))
825 ata_sff_error_handler(ap);
828 static void pdc_post_internal_cmd(struct ata_queued_cmd *qc)
830 struct ata_port *ap = qc->ap;
832 /* make DMA engine forget about the failed command */
833 if (qc->flags & ATA_QCFLAG_FAILED)
837 static void pdc_error_intr(struct ata_port *ap, struct ata_queued_cmd *qc,
838 u32 port_status, u32 err_mask)
840 struct ata_eh_info *ehi = &ap->link.eh_info;
841 unsigned int ac_err_mask = 0;
843 ata_ehi_clear_desc(ehi);
844 ata_ehi_push_desc(ehi, "port_status 0x%08x", port_status);
845 port_status &= err_mask;
847 if (port_status & PDC_DRIVE_ERR)
848 ac_err_mask |= AC_ERR_DEV;
849 if (port_status & (PDC_OVERRUN_ERR | PDC_UNDERRUN_ERR))
850 ac_err_mask |= AC_ERR_OTHER;
851 if (port_status & (PDC2_ATA_HBA_ERR | PDC2_ATA_DMA_CNT_ERR))
852 ac_err_mask |= AC_ERR_ATA_BUS;
853 if (port_status & (PDC_PH_ERR | PDC_SH_ERR | PDC_DH_ERR | PDC2_HTO_ERR
854 | PDC_PCI_SYS_ERR | PDC1_PCI_PARITY_ERR))
855 ac_err_mask |= AC_ERR_HOST_BUS;
857 if (sata_scr_valid(&ap->link)) {
860 pdc_sata_scr_read(&ap->link, SCR_ERROR, &serror);
861 ehi->serror |= serror;
864 qc->err_mask |= ac_err_mask;
871 static unsigned int pdc_host_intr(struct ata_port *ap,
872 struct ata_queued_cmd *qc)
874 unsigned int handled = 0;
875 void __iomem *ata_mmio = ap->ioaddr.cmd_addr;
876 u32 port_status, err_mask;
878 err_mask = PDC_ERR_MASK;
879 if (ap->flags & PDC_FLAG_GEN_II)
880 err_mask &= ~PDC1_ERR_MASK;
882 err_mask &= ~PDC2_ERR_MASK;
883 port_status = readl(ata_mmio + PDC_GLOBAL_CTL);
884 if (unlikely(port_status & err_mask)) {
885 pdc_error_intr(ap, qc, port_status, err_mask);
889 switch (qc->tf.protocol) {
891 case ATA_PROT_NODATA:
893 case ATAPI_PROT_NODATA:
894 qc->err_mask |= ac_err_mask(ata_wait_idle(ap));
899 ap->stats.idle_irq++;
906 static void pdc_irq_clear(struct ata_port *ap)
908 void __iomem *ata_mmio = ap->ioaddr.cmd_addr;
910 readl(ata_mmio + PDC_COMMAND);
913 static irqreturn_t pdc_interrupt(int irq, void *dev_instance)
915 struct ata_host *host = dev_instance;
919 unsigned int handled = 0;
920 void __iomem *host_mmio;
921 unsigned int hotplug_offset, ata_no;
927 if (!host || !host->iomap[PDC_MMIO_BAR]) {
928 VPRINTK("QUICK EXIT\n");
932 host_mmio = host->iomap[PDC_MMIO_BAR];
934 spin_lock(&host->lock);
936 /* read and clear hotplug flags for all ports */
937 if (host->ports[0]->flags & PDC_FLAG_GEN_II) {
938 hotplug_offset = PDC2_SATA_PLUG_CSR;
939 hotplug_status = readl(host_mmio + hotplug_offset);
940 if (hotplug_status & 0xff)
941 writel(hotplug_status | 0xff, host_mmio + hotplug_offset);
942 hotplug_status &= 0xff; /* clear uninteresting bits */
946 /* reading should also clear interrupts */
947 mask = readl(host_mmio + PDC_INT_SEQMASK);
949 if (mask == 0xffffffff && hotplug_status == 0) {
950 VPRINTK("QUICK EXIT 2\n");
954 mask &= 0xffff; /* only 16 SEQIDs possible */
955 if (mask == 0 && hotplug_status == 0) {
956 VPRINTK("QUICK EXIT 3\n");
960 writel(mask, host_mmio + PDC_INT_SEQMASK);
962 is_sataii_tx4 = pdc_is_sataii_tx4(host->ports[0]->flags);
964 for (i = 0; i < host->n_ports; i++) {
965 VPRINTK("port %u\n", i);
968 /* check for a plug or unplug event */
969 ata_no = pdc_port_no_to_ata_no(i, is_sataii_tx4);
970 tmp = hotplug_status & (0x11 << ata_no);
972 struct ata_eh_info *ehi = &ap->link.eh_info;
973 ata_ehi_clear_desc(ehi);
974 ata_ehi_hotplugged(ehi);
975 ata_ehi_push_desc(ehi, "hotplug_status %#x", tmp);
981 /* check for a packet interrupt */
982 tmp = mask & (1 << (i + 1));
984 struct ata_queued_cmd *qc;
986 qc = ata_qc_from_tag(ap, ap->link.active_tag);
987 if (qc && (!(qc->tf.flags & ATA_TFLAG_POLLING)))
988 handled += pdc_host_intr(ap, qc);
995 spin_unlock(&host->lock);
996 return IRQ_RETVAL(handled);
999 static void pdc_packet_start(struct ata_queued_cmd *qc)
1001 struct ata_port *ap = qc->ap;
1002 struct pdc_port_priv *pp = ap->private_data;
1003 void __iomem *host_mmio = ap->host->iomap[PDC_MMIO_BAR];
1004 void __iomem *ata_mmio = ap->ioaddr.cmd_addr;
1005 unsigned int port_no = ap->port_no;
1006 u8 seq = (u8) (port_no + 1);
1008 VPRINTK("ENTER, ap %p\n", ap);
1010 writel(0x00000001, host_mmio + (seq * 4));
1011 readl(host_mmio + (seq * 4)); /* flush */
1014 wmb(); /* flush PRD, pkt writes */
1015 writel(pp->pkt_dma, ata_mmio + PDC_PKT_SUBMIT);
1016 readl(ata_mmio + PDC_PKT_SUBMIT); /* flush */
1019 static unsigned int pdc_qc_issue(struct ata_queued_cmd *qc)
1021 switch (qc->tf.protocol) {
1022 case ATAPI_PROT_NODATA:
1023 if (qc->dev->flags & ATA_DFLAG_CDB_INTR)
1026 case ATA_PROT_NODATA:
1027 if (qc->tf.flags & ATA_TFLAG_POLLING)
1030 case ATAPI_PROT_DMA:
1032 pdc_packet_start(qc);
1037 return ata_sff_qc_issue(qc);
1040 static void pdc_tf_load_mmio(struct ata_port *ap, const struct ata_taskfile *tf)
1042 WARN_ON(tf->protocol == ATA_PROT_DMA || tf->protocol == ATAPI_PROT_DMA);
1043 ata_sff_tf_load(ap, tf);
1046 static void pdc_exec_command_mmio(struct ata_port *ap,
1047 const struct ata_taskfile *tf)
1049 WARN_ON(tf->protocol == ATA_PROT_DMA || tf->protocol == ATAPI_PROT_DMA);
1050 ata_sff_exec_command(ap, tf);
1053 static int pdc_check_atapi_dma(struct ata_queued_cmd *qc)
1055 u8 *scsicmd = qc->scsicmd->cmnd;
1056 int pio = 1; /* atapi dma off by default */
1058 /* Whitelist commands that may use DMA. */
1059 switch (scsicmd[0]) {
1066 case 0xad: /* READ_DVD_STRUCTURE */
1067 case 0xbe: /* READ_CD */
1070 /* -45150 (FFFF4FA2) to -1 (FFFFFFFF) shall use PIO mode */
1071 if (scsicmd[0] == WRITE_10) {
1073 (scsicmd[2] << 24) |
1074 (scsicmd[3] << 16) |
1077 if (lba >= 0xFFFF4FA2)
1083 static int pdc_old_sata_check_atapi_dma(struct ata_queued_cmd *qc)
1085 /* First generation chips cannot use ATAPI DMA on SATA ports */
1089 static void pdc_ata_setup_port(struct ata_port *ap,
1090 void __iomem *base, void __iomem *scr_addr)
1092 ap->ioaddr.cmd_addr = base;
1093 ap->ioaddr.data_addr = base;
1094 ap->ioaddr.feature_addr =
1095 ap->ioaddr.error_addr = base + 0x4;
1096 ap->ioaddr.nsect_addr = base + 0x8;
1097 ap->ioaddr.lbal_addr = base + 0xc;
1098 ap->ioaddr.lbam_addr = base + 0x10;
1099 ap->ioaddr.lbah_addr = base + 0x14;
1100 ap->ioaddr.device_addr = base + 0x18;
1101 ap->ioaddr.command_addr =
1102 ap->ioaddr.status_addr = base + 0x1c;
1103 ap->ioaddr.altstatus_addr =
1104 ap->ioaddr.ctl_addr = base + 0x38;
1105 ap->ioaddr.scr_addr = scr_addr;
1108 static void pdc_host_init(struct ata_host *host)
1110 void __iomem *host_mmio = host->iomap[PDC_MMIO_BAR];
1111 int is_gen2 = host->ports[0]->flags & PDC_FLAG_GEN_II;
1116 hotplug_offset = PDC2_SATA_PLUG_CSR;
1118 hotplug_offset = PDC_SATA_PLUG_CSR;
1121 * Except for the hotplug stuff, this is voodoo from the
1122 * Promise driver. Label this entire section
1123 * "TODO: figure out why we do this"
1126 /* enable BMR_BURST, maybe change FIFO_SHD to 8 dwords */
1127 tmp = readl(host_mmio + PDC_FLASH_CTL);
1128 tmp |= 0x02000; /* bit 13 (enable bmr burst) */
1130 tmp |= 0x10000; /* bit 16 (fifo threshold at 8 dw) */
1131 writel(tmp, host_mmio + PDC_FLASH_CTL);
1133 /* clear plug/unplug flags for all ports */
1134 tmp = readl(host_mmio + hotplug_offset);
1135 writel(tmp | 0xff, host_mmio + hotplug_offset);
1137 tmp = readl(host_mmio + hotplug_offset);
1138 if (is_gen2) /* unmask plug/unplug ints */
1139 writel(tmp & ~0xff0000, host_mmio + hotplug_offset);
1140 else /* mask plug/unplug ints */
1141 writel(tmp | 0xff0000, host_mmio + hotplug_offset);
1143 /* don't initialise TBG or SLEW on 2nd generation chips */
1147 /* reduce TBG clock to 133 Mhz. */
1148 tmp = readl(host_mmio + PDC_TBG_MODE);
1149 tmp &= ~0x30000; /* clear bit 17, 16*/
1150 tmp |= 0x10000; /* set bit 17:16 = 0:1 */
1151 writel(tmp, host_mmio + PDC_TBG_MODE);
1153 readl(host_mmio + PDC_TBG_MODE); /* flush */
1156 /* adjust slew rate control register. */
1157 tmp = readl(host_mmio + PDC_SLEW_CTL);
1158 tmp &= 0xFFFFF03F; /* clear bit 11 ~ 6 */
1159 tmp |= 0x00000900; /* set bit 11-9 = 100b , bit 8-6 = 100 */
1160 writel(tmp, host_mmio + PDC_SLEW_CTL);
1163 static int pdc_ata_init_one(struct pci_dev *pdev,
1164 const struct pci_device_id *ent)
1166 const struct ata_port_info *pi = &pdc_port_info[ent->driver_data];
1167 const struct ata_port_info *ppi[PDC_MAX_PORTS];
1168 struct ata_host *host;
1169 struct pdc_host_priv *hpriv;
1170 void __iomem *host_mmio;
1174 ata_print_version_once(&pdev->dev, DRV_VERSION);
1176 /* enable and acquire resources */
1177 rc = pcim_enable_device(pdev);
1181 rc = pcim_iomap_regions(pdev, 1 << PDC_MMIO_BAR, DRV_NAME);
1183 pcim_pin_device(pdev);
1186 host_mmio = pcim_iomap_table(pdev)[PDC_MMIO_BAR];
1188 /* determine port configuration and setup host */
1190 if (pi->flags & PDC_FLAG_4_PORTS)
1192 for (i = 0; i < n_ports; i++)
1195 if (pi->flags & PDC_FLAG_SATA_PATA) {
1196 u8 tmp = readb(host_mmio + PDC_FLASH_CTL + 1);
1198 ppi[n_ports++] = pi + 1;
1201 host = ata_host_alloc_pinfo(&pdev->dev, ppi, n_ports);
1203 dev_err(&pdev->dev, "failed to allocate host\n");
1206 hpriv = devm_kzalloc(&pdev->dev, sizeof *hpriv, GFP_KERNEL);
1209 spin_lock_init(&hpriv->hard_reset_lock);
1210 host->private_data = hpriv;
1211 host->iomap = pcim_iomap_table(pdev);
1213 is_sataii_tx4 = pdc_is_sataii_tx4(pi->flags);
1214 for (i = 0; i < host->n_ports; i++) {
1215 struct ata_port *ap = host->ports[i];
1216 unsigned int ata_no = pdc_port_no_to_ata_no(i, is_sataii_tx4);
1217 unsigned int ata_offset = 0x200 + ata_no * 0x80;
1218 unsigned int scr_offset = 0x400 + ata_no * 0x100;
1220 pdc_ata_setup_port(ap, host_mmio + ata_offset, host_mmio + scr_offset);
1222 ata_port_pbar_desc(ap, PDC_MMIO_BAR, -1, "mmio");
1223 ata_port_pbar_desc(ap, PDC_MMIO_BAR, ata_offset, "ata");
1226 /* initialize adapter */
1227 pdc_host_init(host);
1229 rc = dma_set_mask_and_coherent(&pdev->dev, ATA_DMA_MASK);
1233 /* start host, request IRQ and attach */
1234 pci_set_master(pdev);
1235 return ata_host_activate(host, pdev->irq, pdc_interrupt, IRQF_SHARED,
1239 module_pci_driver(pdc_ata_pci_driver);
1241 MODULE_AUTHOR("Jeff Garzik");
1242 MODULE_DESCRIPTION("Promise ATA TX2/TX4/TX4000 low-level driver");
1243 MODULE_LICENSE("GPL");
1244 MODULE_DEVICE_TABLE(pci, pdc_ata_pci_tbl);
1245 MODULE_VERSION(DRV_VERSION);