1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * sata_promise.c - Promise SATA
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 void 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);
160 static int pdc_sata_cable_detect(struct ata_port *ap);
162 static struct scsi_host_template pdc_ata_sht = {
163 ATA_BASE_SHT(DRV_NAME),
164 .sg_tablesize = PDC_MAX_PRD,
165 .dma_boundary = ATA_DMA_BOUNDARY,
168 static const struct ata_port_operations pdc_common_ops = {
169 .inherits = &ata_sff_port_ops,
171 .sff_tf_load = pdc_tf_load_mmio,
172 .sff_exec_command = pdc_exec_command_mmio,
173 .check_atapi_dma = pdc_check_atapi_dma,
174 .qc_prep = pdc_qc_prep,
175 .qc_issue = pdc_qc_issue,
177 .sff_irq_clear = pdc_irq_clear,
178 .lost_interrupt = ATA_OP_NULL,
180 .post_internal_cmd = pdc_post_internal_cmd,
181 .error_handler = pdc_error_handler,
184 static struct ata_port_operations pdc_sata_ops = {
185 .inherits = &pdc_common_ops,
186 .cable_detect = pdc_sata_cable_detect,
187 .freeze = pdc_sata_freeze,
188 .thaw = pdc_sata_thaw,
189 .scr_read = pdc_sata_scr_read,
190 .scr_write = pdc_sata_scr_write,
191 .port_start = pdc_sata_port_start,
192 .hardreset = pdc_sata_hardreset,
195 /* First-generation chips need a more restrictive ->check_atapi_dma op,
196 and ->freeze/thaw that ignore the hotplug controls. */
197 static struct ata_port_operations pdc_old_sata_ops = {
198 .inherits = &pdc_sata_ops,
199 .freeze = pdc_freeze,
201 .check_atapi_dma = pdc_old_sata_check_atapi_dma,
204 static struct ata_port_operations pdc_pata_ops = {
205 .inherits = &pdc_common_ops,
206 .cable_detect = pdc_pata_cable_detect,
207 .freeze = pdc_freeze,
209 .port_start = pdc_common_port_start,
210 .softreset = pdc_pata_softreset,
213 static const struct ata_port_info pdc_port_info[] = {
216 .flags = PDC_COMMON_FLAGS | ATA_FLAG_SATA |
218 .pio_mask = ATA_PIO4,
219 .mwdma_mask = ATA_MWDMA2,
220 .udma_mask = ATA_UDMA6,
221 .port_ops = &pdc_old_sata_ops,
226 .flags = PDC_COMMON_FLAGS | ATA_FLAG_SLAVE_POSS,
227 .pio_mask = ATA_PIO4,
228 .mwdma_mask = ATA_MWDMA2,
229 .udma_mask = ATA_UDMA6,
230 .port_ops = &pdc_pata_ops,
235 .flags = PDC_COMMON_FLAGS | ATA_FLAG_SATA |
237 .pio_mask = ATA_PIO4,
238 .mwdma_mask = ATA_MWDMA2,
239 .udma_mask = ATA_UDMA6,
240 .port_ops = &pdc_old_sata_ops,
245 .flags = PDC_COMMON_FLAGS | ATA_FLAG_SLAVE_POSS |
247 .pio_mask = ATA_PIO4,
248 .mwdma_mask = ATA_MWDMA2,
249 .udma_mask = ATA_UDMA6,
250 .port_ops = &pdc_pata_ops,
255 .flags = PDC_COMMON_FLAGS | ATA_FLAG_SATA |
256 PDC_FLAG_GEN_II | PDC_FLAG_SATA_PATA,
257 .pio_mask = ATA_PIO4,
258 .mwdma_mask = ATA_MWDMA2,
259 .udma_mask = ATA_UDMA6,
260 .port_ops = &pdc_sata_ops,
265 .flags = PDC_COMMON_FLAGS | ATA_FLAG_SLAVE_POSS |
267 .pio_mask = ATA_PIO4,
268 .mwdma_mask = ATA_MWDMA2,
269 .udma_mask = ATA_UDMA6,
270 .port_ops = &pdc_pata_ops,
275 .flags = PDC_COMMON_FLAGS | ATA_FLAG_SATA |
276 PDC_FLAG_GEN_II | PDC_FLAG_4_PORTS,
277 .pio_mask = ATA_PIO4,
278 .mwdma_mask = ATA_MWDMA2,
279 .udma_mask = ATA_UDMA6,
280 .port_ops = &pdc_sata_ops,
284 static const struct pci_device_id pdc_ata_pci_tbl[] = {
285 { PCI_VDEVICE(PROMISE, 0x3371), board_2037x },
286 { PCI_VDEVICE(PROMISE, 0x3373), board_2037x },
287 { PCI_VDEVICE(PROMISE, 0x3375), board_2037x },
288 { PCI_VDEVICE(PROMISE, 0x3376), board_2037x },
289 { PCI_VDEVICE(PROMISE, 0x3570), board_2057x },
290 { PCI_VDEVICE(PROMISE, 0x3571), board_2057x },
291 { PCI_VDEVICE(PROMISE, 0x3574), board_2057x },
292 { PCI_VDEVICE(PROMISE, 0x3577), board_2057x },
293 { PCI_VDEVICE(PROMISE, 0x3d73), board_2057x },
294 { PCI_VDEVICE(PROMISE, 0x3d75), board_2057x },
296 { PCI_VDEVICE(PROMISE, 0x3318), board_20319 },
297 { PCI_VDEVICE(PROMISE, 0x3319), board_20319 },
298 { PCI_VDEVICE(PROMISE, 0x3515), board_40518 },
299 { PCI_VDEVICE(PROMISE, 0x3519), board_40518 },
300 { PCI_VDEVICE(PROMISE, 0x3d17), board_40518 },
301 { PCI_VDEVICE(PROMISE, 0x3d18), board_40518 },
303 { PCI_VDEVICE(PROMISE, 0x6629), board_20619 },
305 { } /* terminate list */
308 static struct pci_driver pdc_ata_pci_driver = {
310 .id_table = pdc_ata_pci_tbl,
311 .probe = pdc_ata_init_one,
312 .remove = ata_pci_remove_one,
315 static int pdc_common_port_start(struct ata_port *ap)
317 struct device *dev = ap->host->dev;
318 struct pdc_port_priv *pp;
321 /* we use the same prd table as bmdma, allocate it */
322 rc = ata_bmdma_port_start(ap);
326 pp = devm_kzalloc(dev, sizeof(*pp), GFP_KERNEL);
330 pp->pkt = dmam_alloc_coherent(dev, 128, &pp->pkt_dma, GFP_KERNEL);
334 ap->private_data = pp;
339 static int pdc_sata_port_start(struct ata_port *ap)
343 rc = pdc_common_port_start(ap);
347 /* fix up PHYMODE4 align timing */
348 if (ap->flags & PDC_FLAG_GEN_II) {
349 void __iomem *sata_mmio = ap->ioaddr.scr_addr;
352 tmp = readl(sata_mmio + PDC_PHYMODE4);
353 tmp = (tmp & ~3) | 1; /* set bits 1:0 = 0:1 */
354 writel(tmp, sata_mmio + PDC_PHYMODE4);
360 static void pdc_fpdma_clear_interrupt_flag(struct ata_port *ap)
362 void __iomem *sata_mmio = ap->ioaddr.scr_addr;
365 tmp = readl(sata_mmio + PDC_FPDMA_CTLSTAT);
366 tmp |= PDC_FPDMA_CTLSTAT_DMASETUP_INT_FLAG;
367 tmp |= PDC_FPDMA_CTLSTAT_SETDB_INT_FLAG;
369 /* It's not allowed to write to the entire FPDMA_CTLSTAT register
370 when NCQ is running. So do a byte-sized write to bits 10 and 11. */
371 writeb(tmp >> 8, sata_mmio + PDC_FPDMA_CTLSTAT + 1);
372 readb(sata_mmio + PDC_FPDMA_CTLSTAT + 1); /* flush */
375 static void pdc_fpdma_reset(struct ata_port *ap)
377 void __iomem *sata_mmio = ap->ioaddr.scr_addr;
380 tmp = (u8)readl(sata_mmio + PDC_FPDMA_CTLSTAT);
382 tmp |= PDC_FPDMA_CTLSTAT_RESET;
383 writeb(tmp, sata_mmio + PDC_FPDMA_CTLSTAT);
384 readl(sata_mmio + PDC_FPDMA_CTLSTAT); /* flush */
386 tmp &= ~PDC_FPDMA_CTLSTAT_RESET;
387 writeb(tmp, sata_mmio + PDC_FPDMA_CTLSTAT);
388 readl(sata_mmio + PDC_FPDMA_CTLSTAT); /* flush */
390 pdc_fpdma_clear_interrupt_flag(ap);
393 static void pdc_not_at_command_packet_phase(struct ata_port *ap)
395 void __iomem *sata_mmio = ap->ioaddr.scr_addr;
399 /* check not at ASIC packet command phase */
400 for (i = 0; i < 100; ++i) {
401 writel(0, sata_mmio + PDC_INTERNAL_DEBUG_1);
402 tmp = readl(sata_mmio + PDC_INTERNAL_DEBUG_2);
403 if ((tmp & 0xF) != 1)
409 static void pdc_clear_internal_debug_record_error_register(struct ata_port *ap)
411 void __iomem *sata_mmio = ap->ioaddr.scr_addr;
413 writel(0xffffffff, sata_mmio + PDC_SATA_ERROR);
414 writel(0xffff0000, sata_mmio + PDC_LINK_LAYER_ERRORS);
417 static void pdc_reset_port(struct ata_port *ap)
419 void __iomem *ata_ctlstat_mmio = ap->ioaddr.cmd_addr + PDC_CTLSTAT;
423 if (ap->flags & PDC_FLAG_GEN_II)
424 pdc_not_at_command_packet_phase(ap);
426 tmp = readl(ata_ctlstat_mmio);
428 writel(tmp, ata_ctlstat_mmio);
430 for (i = 11; i > 0; i--) {
431 tmp = readl(ata_ctlstat_mmio);
438 writel(tmp, ata_ctlstat_mmio);
442 writel(tmp, ata_ctlstat_mmio);
443 readl(ata_ctlstat_mmio); /* flush */
445 if (sata_scr_valid(&ap->link) && (ap->flags & PDC_FLAG_GEN_II)) {
447 pdc_clear_internal_debug_record_error_register(ap);
451 static int pdc_pata_cable_detect(struct ata_port *ap)
454 void __iomem *ata_mmio = ap->ioaddr.cmd_addr;
456 tmp = readb(ata_mmio + PDC_CTLSTAT + 3);
458 return ATA_CBL_PATA40;
459 return ATA_CBL_PATA80;
462 static int pdc_sata_cable_detect(struct ata_port *ap)
467 static int pdc_sata_scr_read(struct ata_link *link,
468 unsigned int sc_reg, u32 *val)
470 if (sc_reg > SCR_CONTROL)
472 *val = readl(link->ap->ioaddr.scr_addr + (sc_reg * 4));
476 static int pdc_sata_scr_write(struct ata_link *link,
477 unsigned int sc_reg, u32 val)
479 if (sc_reg > SCR_CONTROL)
481 writel(val, link->ap->ioaddr.scr_addr + (sc_reg * 4));
485 static void pdc_atapi_pkt(struct ata_queued_cmd *qc)
487 struct ata_port *ap = qc->ap;
488 dma_addr_t sg_table = ap->bmdma_prd_dma;
489 unsigned int cdb_len = qc->dev->cdb_len;
491 struct pdc_port_priv *pp = ap->private_data;
493 __le32 *buf32 = (__le32 *) buf;
494 unsigned int dev_sel, feature;
496 /* set control bits (byte 0), zero delay seq id (byte 3),
497 * and seq id (byte 2)
499 switch (qc->tf.protocol) {
501 if (!(qc->tf.flags & ATA_TFLAG_WRITE))
502 buf32[0] = cpu_to_le32(PDC_PKT_READ);
506 case ATAPI_PROT_NODATA:
507 buf32[0] = cpu_to_le32(PDC_PKT_NODATA);
513 buf32[1] = cpu_to_le32(sg_table); /* S/G table addr */
514 buf32[2] = 0; /* no next-packet */
517 if (sata_scr_valid(&ap->link))
518 dev_sel = PDC_DEVICE_SATA;
520 dev_sel = qc->tf.device;
522 buf[12] = (1 << 5) | ATA_REG_DEVICE;
524 buf[14] = (1 << 5) | ATA_REG_DEVICE | PDC_PKT_CLEAR_BSY;
525 buf[15] = dev_sel; /* once more, waiting for BSY to clear */
527 buf[16] = (1 << 5) | ATA_REG_NSECT;
528 buf[17] = qc->tf.nsect;
529 buf[18] = (1 << 5) | ATA_REG_LBAL;
530 buf[19] = qc->tf.lbal;
532 /* set feature and byte counter registers */
533 if (qc->tf.protocol != ATAPI_PROT_DMA)
534 feature = PDC_FEATURE_ATAPI_PIO;
536 feature = PDC_FEATURE_ATAPI_DMA;
538 buf[20] = (1 << 5) | ATA_REG_FEATURE;
540 buf[22] = (1 << 5) | ATA_REG_BYTEL;
541 buf[23] = qc->tf.lbam;
542 buf[24] = (1 << 5) | ATA_REG_BYTEH;
543 buf[25] = qc->tf.lbah;
545 /* send ATAPI packet command 0xA0 */
546 buf[26] = (1 << 5) | ATA_REG_CMD;
547 buf[27] = qc->tf.command;
549 /* select drive and check DRQ */
550 buf[28] = (1 << 5) | ATA_REG_DEVICE | PDC_PKT_WAIT_DRDY;
553 /* we can represent cdb lengths 2/4/6/8/10/12/14/16 */
554 BUG_ON(cdb_len & ~0x1E);
556 /* append the CDB as the final part */
557 buf[30] = (((cdb_len >> 1) & 7) << 5) | ATA_REG_DATA | PDC_LAST_REG;
558 memcpy(buf+31, cdb, cdb_len);
562 * pdc_fill_sg - Fill PCI IDE PRD table
563 * @qc: Metadata associated with taskfile to be transferred
565 * Fill PCI IDE PRD (scatter-gather) table with segments
566 * associated with the current disk command.
567 * Make sure hardware does not choke on it.
570 * spin_lock_irqsave(host lock)
573 static void pdc_fill_sg(struct ata_queued_cmd *qc)
575 struct ata_port *ap = qc->ap;
576 struct ata_bmdma_prd *prd = ap->bmdma_prd;
577 struct scatterlist *sg;
578 const u32 SG_COUNT_ASIC_BUG = 41*4;
579 unsigned int si, idx;
582 if (!(qc->flags & ATA_QCFLAG_DMAMAP))
586 for_each_sg(qc->sg, sg, qc->n_elem, si) {
590 /* determine if physical DMA addr spans 64K boundary.
591 * Note h/w doesn't support 64-bit, so we unconditionally
592 * truncate dma_addr_t to u32.
594 addr = (u32) sg_dma_address(sg);
595 sg_len = sg_dma_len(sg);
598 offset = addr & 0xffff;
600 if ((offset + sg_len) > 0x10000)
601 len = 0x10000 - offset;
603 prd[idx].addr = cpu_to_le32(addr);
604 prd[idx].flags_len = cpu_to_le32(len & 0xffff);
605 VPRINTK("PRD[%u] = (0x%X, 0x%X)\n", idx, addr, len);
613 len = le32_to_cpu(prd[idx - 1].flags_len);
615 if (len > SG_COUNT_ASIC_BUG) {
618 VPRINTK("Splitting last PRD.\n");
620 addr = le32_to_cpu(prd[idx - 1].addr);
621 prd[idx - 1].flags_len = cpu_to_le32(len - SG_COUNT_ASIC_BUG);
622 VPRINTK("PRD[%u] = (0x%X, 0x%X)\n", idx - 1, addr, SG_COUNT_ASIC_BUG);
624 addr = addr + len - SG_COUNT_ASIC_BUG;
625 len = SG_COUNT_ASIC_BUG;
626 prd[idx].addr = cpu_to_le32(addr);
627 prd[idx].flags_len = cpu_to_le32(len);
628 VPRINTK("PRD[%u] = (0x%X, 0x%X)\n", idx, addr, len);
633 prd[idx - 1].flags_len |= cpu_to_le32(ATA_PRD_EOT);
636 static void pdc_qc_prep(struct ata_queued_cmd *qc)
638 struct pdc_port_priv *pp = qc->ap->private_data;
643 switch (qc->tf.protocol) {
647 case ATA_PROT_NODATA:
648 i = pdc_pkt_header(&qc->tf, qc->ap->bmdma_prd_dma,
649 qc->dev->devno, pp->pkt);
650 if (qc->tf.flags & ATA_TFLAG_LBA48)
651 i = pdc_prep_lba48(&qc->tf, pp->pkt, i);
653 i = pdc_prep_lba28(&qc->tf, pp->pkt, i);
654 pdc_pkt_footer(&qc->tf, pp->pkt, i);
662 case ATAPI_PROT_NODATA:
670 static int pdc_is_sataii_tx4(unsigned long flags)
672 const unsigned long mask = PDC_FLAG_GEN_II | PDC_FLAG_4_PORTS;
673 return (flags & mask) == mask;
676 static unsigned int pdc_port_no_to_ata_no(unsigned int port_no,
679 static const unsigned char sataii_tx4_port_remap[4] = { 3, 1, 0, 2};
680 return is_sataii_tx4 ? sataii_tx4_port_remap[port_no] : port_no;
683 static unsigned int pdc_sata_nr_ports(const struct ata_port *ap)
685 return (ap->flags & PDC_FLAG_4_PORTS) ? 4 : 2;
688 static unsigned int pdc_sata_ata_port_to_ata_no(const struct ata_port *ap)
690 const struct ata_host *host = ap->host;
691 unsigned int nr_ports = pdc_sata_nr_ports(ap);
694 for (i = 0; i < nr_ports && host->ports[i] != ap; ++i)
696 BUG_ON(i >= nr_ports);
697 return pdc_port_no_to_ata_no(i, pdc_is_sataii_tx4(ap->flags));
700 static void pdc_freeze(struct ata_port *ap)
702 void __iomem *ata_mmio = ap->ioaddr.cmd_addr;
705 tmp = readl(ata_mmio + PDC_CTLSTAT);
706 tmp |= PDC_IRQ_DISABLE;
707 tmp &= ~PDC_DMA_ENABLE;
708 writel(tmp, ata_mmio + PDC_CTLSTAT);
709 readl(ata_mmio + PDC_CTLSTAT); /* flush */
712 static void pdc_sata_freeze(struct ata_port *ap)
714 struct ata_host *host = ap->host;
715 void __iomem *host_mmio = host->iomap[PDC_MMIO_BAR];
716 unsigned int hotplug_offset = PDC2_SATA_PLUG_CSR;
717 unsigned int ata_no = pdc_sata_ata_port_to_ata_no(ap);
720 /* Disable hotplug events on this port.
723 * 1) hotplug register accesses must be serialised via host->lock
724 * 2) ap->lock == &ap->host->lock
725 * 3) ->freeze() and ->thaw() are called with ap->lock held
727 hotplug_status = readl(host_mmio + hotplug_offset);
728 hotplug_status |= 0x11 << (ata_no + 16);
729 writel(hotplug_status, host_mmio + hotplug_offset);
730 readl(host_mmio + hotplug_offset); /* flush */
735 static void pdc_thaw(struct ata_port *ap)
737 void __iomem *ata_mmio = ap->ioaddr.cmd_addr;
741 readl(ata_mmio + PDC_COMMAND);
743 /* turn IRQ back on */
744 tmp = readl(ata_mmio + PDC_CTLSTAT);
745 tmp &= ~PDC_IRQ_DISABLE;
746 writel(tmp, ata_mmio + PDC_CTLSTAT);
747 readl(ata_mmio + PDC_CTLSTAT); /* flush */
750 static void pdc_sata_thaw(struct ata_port *ap)
752 struct ata_host *host = ap->host;
753 void __iomem *host_mmio = host->iomap[PDC_MMIO_BAR];
754 unsigned int hotplug_offset = PDC2_SATA_PLUG_CSR;
755 unsigned int ata_no = pdc_sata_ata_port_to_ata_no(ap);
760 /* Enable hotplug events on this port.
761 * Locking: see pdc_sata_freeze().
763 hotplug_status = readl(host_mmio + hotplug_offset);
764 hotplug_status |= 0x11 << ata_no;
765 hotplug_status &= ~(0x11 << (ata_no + 16));
766 writel(hotplug_status, host_mmio + hotplug_offset);
767 readl(host_mmio + hotplug_offset); /* flush */
770 static int pdc_pata_softreset(struct ata_link *link, unsigned int *class,
771 unsigned long deadline)
773 pdc_reset_port(link->ap);
774 return ata_sff_softreset(link, class, deadline);
777 static unsigned int pdc_ata_port_to_ata_no(const struct ata_port *ap)
779 void __iomem *ata_mmio = ap->ioaddr.cmd_addr;
780 void __iomem *host_mmio = ap->host->iomap[PDC_MMIO_BAR];
782 /* ata_mmio == host_mmio + 0x200 + ata_no * 0x80 */
783 return (ata_mmio - host_mmio - 0x200) / 0x80;
786 static void pdc_hard_reset_port(struct ata_port *ap)
788 void __iomem *host_mmio = ap->host->iomap[PDC_MMIO_BAR];
789 void __iomem *pcictl_b1_mmio = host_mmio + PDC_PCI_CTL + 1;
790 unsigned int ata_no = pdc_ata_port_to_ata_no(ap);
791 struct pdc_host_priv *hpriv = ap->host->private_data;
794 spin_lock(&hpriv->hard_reset_lock);
796 tmp = readb(pcictl_b1_mmio);
797 tmp &= ~(0x10 << ata_no);
798 writeb(tmp, pcictl_b1_mmio);
799 readb(pcictl_b1_mmio); /* flush */
801 tmp |= (0x10 << ata_no);
802 writeb(tmp, pcictl_b1_mmio);
803 readb(pcictl_b1_mmio); /* flush */
805 spin_unlock(&hpriv->hard_reset_lock);
808 static int pdc_sata_hardreset(struct ata_link *link, unsigned int *class,
809 unsigned long deadline)
811 if (link->ap->flags & PDC_FLAG_GEN_II)
812 pdc_not_at_command_packet_phase(link->ap);
813 /* hotplug IRQs should have been masked by pdc_sata_freeze() */
814 pdc_hard_reset_port(link->ap);
815 pdc_reset_port(link->ap);
817 /* sata_promise can't reliably acquire the first D2H Reg FIS
818 * after hardreset. Do non-waiting hardreset and request
821 return sata_std_hardreset(link, class, deadline);
824 static void pdc_error_handler(struct ata_port *ap)
826 if (!(ap->pflags & ATA_PFLAG_FROZEN))
829 ata_sff_error_handler(ap);
832 static void pdc_post_internal_cmd(struct ata_queued_cmd *qc)
834 struct ata_port *ap = qc->ap;
836 /* make DMA engine forget about the failed command */
837 if (qc->flags & ATA_QCFLAG_FAILED)
841 static void pdc_error_intr(struct ata_port *ap, struct ata_queued_cmd *qc,
842 u32 port_status, u32 err_mask)
844 struct ata_eh_info *ehi = &ap->link.eh_info;
845 unsigned int ac_err_mask = 0;
847 ata_ehi_clear_desc(ehi);
848 ata_ehi_push_desc(ehi, "port_status 0x%08x", port_status);
849 port_status &= err_mask;
851 if (port_status & PDC_DRIVE_ERR)
852 ac_err_mask |= AC_ERR_DEV;
853 if (port_status & (PDC_OVERRUN_ERR | PDC_UNDERRUN_ERR))
854 ac_err_mask |= AC_ERR_OTHER;
855 if (port_status & (PDC2_ATA_HBA_ERR | PDC2_ATA_DMA_CNT_ERR))
856 ac_err_mask |= AC_ERR_ATA_BUS;
857 if (port_status & (PDC_PH_ERR | PDC_SH_ERR | PDC_DH_ERR | PDC2_HTO_ERR
858 | PDC_PCI_SYS_ERR | PDC1_PCI_PARITY_ERR))
859 ac_err_mask |= AC_ERR_HOST_BUS;
861 if (sata_scr_valid(&ap->link)) {
864 pdc_sata_scr_read(&ap->link, SCR_ERROR, &serror);
865 ehi->serror |= serror;
868 qc->err_mask |= ac_err_mask;
875 static unsigned int pdc_host_intr(struct ata_port *ap,
876 struct ata_queued_cmd *qc)
878 unsigned int handled = 0;
879 void __iomem *ata_mmio = ap->ioaddr.cmd_addr;
880 u32 port_status, err_mask;
882 err_mask = PDC_ERR_MASK;
883 if (ap->flags & PDC_FLAG_GEN_II)
884 err_mask &= ~PDC1_ERR_MASK;
886 err_mask &= ~PDC2_ERR_MASK;
887 port_status = readl(ata_mmio + PDC_GLOBAL_CTL);
888 if (unlikely(port_status & err_mask)) {
889 pdc_error_intr(ap, qc, port_status, err_mask);
893 switch (qc->tf.protocol) {
895 case ATA_PROT_NODATA:
897 case ATAPI_PROT_NODATA:
898 qc->err_mask |= ac_err_mask(ata_wait_idle(ap));
903 ap->stats.idle_irq++;
910 static void pdc_irq_clear(struct ata_port *ap)
912 void __iomem *ata_mmio = ap->ioaddr.cmd_addr;
914 readl(ata_mmio + PDC_COMMAND);
917 static irqreturn_t pdc_interrupt(int irq, void *dev_instance)
919 struct ata_host *host = dev_instance;
923 unsigned int handled = 0;
924 void __iomem *host_mmio;
925 unsigned int hotplug_offset, ata_no;
931 if (!host || !host->iomap[PDC_MMIO_BAR]) {
932 VPRINTK("QUICK EXIT\n");
936 host_mmio = host->iomap[PDC_MMIO_BAR];
938 spin_lock(&host->lock);
940 /* read and clear hotplug flags for all ports */
941 if (host->ports[0]->flags & PDC_FLAG_GEN_II) {
942 hotplug_offset = PDC2_SATA_PLUG_CSR;
943 hotplug_status = readl(host_mmio + hotplug_offset);
944 if (hotplug_status & 0xff)
945 writel(hotplug_status | 0xff, host_mmio + hotplug_offset);
946 hotplug_status &= 0xff; /* clear uninteresting bits */
950 /* reading should also clear interrupts */
951 mask = readl(host_mmio + PDC_INT_SEQMASK);
953 if (mask == 0xffffffff && hotplug_status == 0) {
954 VPRINTK("QUICK EXIT 2\n");
958 mask &= 0xffff; /* only 16 SEQIDs possible */
959 if (mask == 0 && hotplug_status == 0) {
960 VPRINTK("QUICK EXIT 3\n");
964 writel(mask, host_mmio + PDC_INT_SEQMASK);
966 is_sataii_tx4 = pdc_is_sataii_tx4(host->ports[0]->flags);
968 for (i = 0; i < host->n_ports; i++) {
969 VPRINTK("port %u\n", i);
972 /* check for a plug or unplug event */
973 ata_no = pdc_port_no_to_ata_no(i, is_sataii_tx4);
974 tmp = hotplug_status & (0x11 << ata_no);
976 struct ata_eh_info *ehi = &ap->link.eh_info;
977 ata_ehi_clear_desc(ehi);
978 ata_ehi_hotplugged(ehi);
979 ata_ehi_push_desc(ehi, "hotplug_status %#x", tmp);
985 /* check for a packet interrupt */
986 tmp = mask & (1 << (i + 1));
988 struct ata_queued_cmd *qc;
990 qc = ata_qc_from_tag(ap, ap->link.active_tag);
991 if (qc && (!(qc->tf.flags & ATA_TFLAG_POLLING)))
992 handled += pdc_host_intr(ap, qc);
999 spin_unlock(&host->lock);
1000 return IRQ_RETVAL(handled);
1003 static void pdc_packet_start(struct ata_queued_cmd *qc)
1005 struct ata_port *ap = qc->ap;
1006 struct pdc_port_priv *pp = ap->private_data;
1007 void __iomem *host_mmio = ap->host->iomap[PDC_MMIO_BAR];
1008 void __iomem *ata_mmio = ap->ioaddr.cmd_addr;
1009 unsigned int port_no = ap->port_no;
1010 u8 seq = (u8) (port_no + 1);
1012 VPRINTK("ENTER, ap %p\n", ap);
1014 writel(0x00000001, host_mmio + (seq * 4));
1015 readl(host_mmio + (seq * 4)); /* flush */
1018 wmb(); /* flush PRD, pkt writes */
1019 writel(pp->pkt_dma, ata_mmio + PDC_PKT_SUBMIT);
1020 readl(ata_mmio + PDC_PKT_SUBMIT); /* flush */
1023 static unsigned int pdc_qc_issue(struct ata_queued_cmd *qc)
1025 switch (qc->tf.protocol) {
1026 case ATAPI_PROT_NODATA:
1027 if (qc->dev->flags & ATA_DFLAG_CDB_INTR)
1030 case ATA_PROT_NODATA:
1031 if (qc->tf.flags & ATA_TFLAG_POLLING)
1034 case ATAPI_PROT_DMA:
1036 pdc_packet_start(qc);
1041 return ata_sff_qc_issue(qc);
1044 static void pdc_tf_load_mmio(struct ata_port *ap, const struct ata_taskfile *tf)
1046 WARN_ON(tf->protocol == ATA_PROT_DMA || tf->protocol == ATAPI_PROT_DMA);
1047 ata_sff_tf_load(ap, tf);
1050 static void pdc_exec_command_mmio(struct ata_port *ap,
1051 const struct ata_taskfile *tf)
1053 WARN_ON(tf->protocol == ATA_PROT_DMA || tf->protocol == ATAPI_PROT_DMA);
1054 ata_sff_exec_command(ap, tf);
1057 static int pdc_check_atapi_dma(struct ata_queued_cmd *qc)
1059 u8 *scsicmd = qc->scsicmd->cmnd;
1060 int pio = 1; /* atapi dma off by default */
1062 /* Whitelist commands that may use DMA. */
1063 switch (scsicmd[0]) {
1070 case 0xad: /* READ_DVD_STRUCTURE */
1071 case 0xbe: /* READ_CD */
1074 /* -45150 (FFFF4FA2) to -1 (FFFFFFFF) shall use PIO mode */
1075 if (scsicmd[0] == WRITE_10) {
1077 (scsicmd[2] << 24) |
1078 (scsicmd[3] << 16) |
1081 if (lba >= 0xFFFF4FA2)
1087 static int pdc_old_sata_check_atapi_dma(struct ata_queued_cmd *qc)
1089 /* First generation chips cannot use ATAPI DMA on SATA ports */
1093 static void pdc_ata_setup_port(struct ata_port *ap,
1094 void __iomem *base, void __iomem *scr_addr)
1096 ap->ioaddr.cmd_addr = base;
1097 ap->ioaddr.data_addr = base;
1098 ap->ioaddr.feature_addr =
1099 ap->ioaddr.error_addr = base + 0x4;
1100 ap->ioaddr.nsect_addr = base + 0x8;
1101 ap->ioaddr.lbal_addr = base + 0xc;
1102 ap->ioaddr.lbam_addr = base + 0x10;
1103 ap->ioaddr.lbah_addr = base + 0x14;
1104 ap->ioaddr.device_addr = base + 0x18;
1105 ap->ioaddr.command_addr =
1106 ap->ioaddr.status_addr = base + 0x1c;
1107 ap->ioaddr.altstatus_addr =
1108 ap->ioaddr.ctl_addr = base + 0x38;
1109 ap->ioaddr.scr_addr = scr_addr;
1112 static void pdc_host_init(struct ata_host *host)
1114 void __iomem *host_mmio = host->iomap[PDC_MMIO_BAR];
1115 int is_gen2 = host->ports[0]->flags & PDC_FLAG_GEN_II;
1120 hotplug_offset = PDC2_SATA_PLUG_CSR;
1122 hotplug_offset = PDC_SATA_PLUG_CSR;
1125 * Except for the hotplug stuff, this is voodoo from the
1126 * Promise driver. Label this entire section
1127 * "TODO: figure out why we do this"
1130 /* enable BMR_BURST, maybe change FIFO_SHD to 8 dwords */
1131 tmp = readl(host_mmio + PDC_FLASH_CTL);
1132 tmp |= 0x02000; /* bit 13 (enable bmr burst) */
1134 tmp |= 0x10000; /* bit 16 (fifo threshold at 8 dw) */
1135 writel(tmp, host_mmio + PDC_FLASH_CTL);
1137 /* clear plug/unplug flags for all ports */
1138 tmp = readl(host_mmio + hotplug_offset);
1139 writel(tmp | 0xff, host_mmio + hotplug_offset);
1141 tmp = readl(host_mmio + hotplug_offset);
1142 if (is_gen2) /* unmask plug/unplug ints */
1143 writel(tmp & ~0xff0000, host_mmio + hotplug_offset);
1144 else /* mask plug/unplug ints */
1145 writel(tmp | 0xff0000, host_mmio + hotplug_offset);
1147 /* don't initialise TBG or SLEW on 2nd generation chips */
1151 /* reduce TBG clock to 133 Mhz. */
1152 tmp = readl(host_mmio + PDC_TBG_MODE);
1153 tmp &= ~0x30000; /* clear bit 17, 16*/
1154 tmp |= 0x10000; /* set bit 17:16 = 0:1 */
1155 writel(tmp, host_mmio + PDC_TBG_MODE);
1157 readl(host_mmio + PDC_TBG_MODE); /* flush */
1160 /* adjust slew rate control register. */
1161 tmp = readl(host_mmio + PDC_SLEW_CTL);
1162 tmp &= 0xFFFFF03F; /* clear bit 11 ~ 6 */
1163 tmp |= 0x00000900; /* set bit 11-9 = 100b , bit 8-6 = 100 */
1164 writel(tmp, host_mmio + PDC_SLEW_CTL);
1167 static int pdc_ata_init_one(struct pci_dev *pdev,
1168 const struct pci_device_id *ent)
1170 const struct ata_port_info *pi = &pdc_port_info[ent->driver_data];
1171 const struct ata_port_info *ppi[PDC_MAX_PORTS];
1172 struct ata_host *host;
1173 struct pdc_host_priv *hpriv;
1174 void __iomem *host_mmio;
1178 ata_print_version_once(&pdev->dev, DRV_VERSION);
1180 /* enable and acquire resources */
1181 rc = pcim_enable_device(pdev);
1185 rc = pcim_iomap_regions(pdev, 1 << PDC_MMIO_BAR, DRV_NAME);
1187 pcim_pin_device(pdev);
1190 host_mmio = pcim_iomap_table(pdev)[PDC_MMIO_BAR];
1192 /* determine port configuration and setup host */
1194 if (pi->flags & PDC_FLAG_4_PORTS)
1196 for (i = 0; i < n_ports; i++)
1199 if (pi->flags & PDC_FLAG_SATA_PATA) {
1200 u8 tmp = readb(host_mmio + PDC_FLASH_CTL + 1);
1202 ppi[n_ports++] = pi + 1;
1205 host = ata_host_alloc_pinfo(&pdev->dev, ppi, n_ports);
1207 dev_err(&pdev->dev, "failed to allocate host\n");
1210 hpriv = devm_kzalloc(&pdev->dev, sizeof *hpriv, GFP_KERNEL);
1213 spin_lock_init(&hpriv->hard_reset_lock);
1214 host->private_data = hpriv;
1215 host->iomap = pcim_iomap_table(pdev);
1217 is_sataii_tx4 = pdc_is_sataii_tx4(pi->flags);
1218 for (i = 0; i < host->n_ports; i++) {
1219 struct ata_port *ap = host->ports[i];
1220 unsigned int ata_no = pdc_port_no_to_ata_no(i, is_sataii_tx4);
1221 unsigned int ata_offset = 0x200 + ata_no * 0x80;
1222 unsigned int scr_offset = 0x400 + ata_no * 0x100;
1224 pdc_ata_setup_port(ap, host_mmio + ata_offset, host_mmio + scr_offset);
1226 ata_port_pbar_desc(ap, PDC_MMIO_BAR, -1, "mmio");
1227 ata_port_pbar_desc(ap, PDC_MMIO_BAR, ata_offset, "ata");
1230 /* initialize adapter */
1231 pdc_host_init(host);
1233 rc = dma_set_mask(&pdev->dev, ATA_DMA_MASK);
1236 rc = dma_set_coherent_mask(&pdev->dev, ATA_DMA_MASK);
1240 /* start host, request IRQ and attach */
1241 pci_set_master(pdev);
1242 return ata_host_activate(host, pdev->irq, pdc_interrupt, IRQF_SHARED,
1246 module_pci_driver(pdc_ata_pci_driver);
1248 MODULE_AUTHOR("Jeff Garzik");
1249 MODULE_DESCRIPTION("Promise ATA TX2/TX4/TX4000 low-level driver");
1250 MODULE_LICENSE("GPL");
1251 MODULE_DEVICE_TABLE(pci, pdc_ata_pci_tbl);
1252 MODULE_VERSION(DRV_VERSION);