2 * sata_promise.c - Promise SATA
4 * Maintained by: Jeff Garzik <jgarzik@pobox.com>
5 * Mikael Pettersson <mikpe@it.uu.se>
6 * Please ALWAYS copy linux-ide@vger.kernel.org
9 * Copyright 2003-2004 Red Hat, Inc.
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of the GNU General Public License as published by
14 * the Free Software Foundation; either version 2, or (at your option)
17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
22 * You should have received a copy of the GNU General Public License
23 * along with this program; see the file COPYING. If not, write to
24 * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
27 * libata documentation is available via 'make {ps|pdf}docs',
28 * as Documentation/DocBook/libata.*
30 * Hardware information only available under NDA.
34 #include <linux/kernel.h>
35 #include <linux/module.h>
36 #include <linux/pci.h>
37 #include <linux/init.h>
38 #include <linux/blkdev.h>
39 #include <linux/delay.h>
40 #include <linux/interrupt.h>
41 #include <linux/device.h>
42 #include <scsi/scsi.h>
43 #include <scsi/scsi_host.h>
44 #include <scsi/scsi_cmnd.h>
45 #include <linux/libata.h>
46 #include "sata_promise.h"
48 #define DRV_NAME "sata_promise"
49 #define DRV_VERSION "2.11"
54 PDC_MAX_PRD = LIBATA_MAX_PRD - 1, /* -1 for ASIC PRD bug workaround */
56 /* register offsets */
57 PDC_FEATURE = 0x04, /* Feature/Error reg (per port) */
58 PDC_SECTOR_COUNT = 0x08, /* Sector count reg (per port) */
59 PDC_SECTOR_NUMBER = 0x0C, /* Sector number reg (per port) */
60 PDC_CYLINDER_LOW = 0x10, /* Cylinder low reg (per port) */
61 PDC_CYLINDER_HIGH = 0x14, /* Cylinder high reg (per port) */
62 PDC_DEVICE = 0x18, /* Device/Head reg (per port) */
63 PDC_COMMAND = 0x1C, /* Command/status reg (per port) */
64 PDC_ALTSTATUS = 0x38, /* Alternate-status/device-control reg (per port) */
65 PDC_PKT_SUBMIT = 0x40, /* Command packet pointer addr */
66 PDC_INT_SEQMASK = 0x40, /* Mask of asserted SEQ INTs */
67 PDC_FLASH_CTL = 0x44, /* Flash control register */
68 PDC_GLOBAL_CTL = 0x48, /* Global control/status (per port) */
69 PDC_CTLSTAT = 0x60, /* IDE control and status (per port) */
70 PDC_SATA_PLUG_CSR = 0x6C, /* SATA Plug control/status reg */
71 PDC2_SATA_PLUG_CSR = 0x60, /* SATAII Plug control/status reg */
72 PDC_TBG_MODE = 0x41C, /* TBG mode (not SATAII) */
73 PDC_SLEW_CTL = 0x470, /* slew rate control reg (not SATAII) */
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_NO_LEGACY |
122 ATA_FLAG_PIO_POLLING,
125 PDC_FLAG_GEN_II = (1 << 24),
126 PDC_FLAG_SATA_PATA = (1 << 25), /* supports SATA + PATA */
127 PDC_FLAG_4_PORTS = (1 << 26), /* 4 ports */
130 struct pdc_port_priv {
135 static int pdc_sata_scr_read(struct ata_port *ap, unsigned int sc_reg, u32 *val);
136 static int pdc_sata_scr_write(struct ata_port *ap, unsigned int sc_reg, u32 val);
137 static int pdc_ata_init_one (struct pci_dev *pdev, const struct pci_device_id *ent);
138 static int pdc_common_port_start(struct ata_port *ap);
139 static int pdc_sata_port_start(struct ata_port *ap);
140 static void pdc_qc_prep(struct ata_queued_cmd *qc);
141 static void pdc_tf_load_mmio(struct ata_port *ap, const struct ata_taskfile *tf);
142 static void pdc_exec_command_mmio(struct ata_port *ap, const struct ata_taskfile *tf);
143 static int pdc_check_atapi_dma(struct ata_queued_cmd *qc);
144 static int pdc_old_sata_check_atapi_dma(struct ata_queued_cmd *qc);
145 static void pdc_irq_clear(struct ata_port *ap);
146 static unsigned int pdc_qc_issue_prot(struct ata_queued_cmd *qc);
147 static void pdc_freeze(struct ata_port *ap);
148 static void pdc_thaw(struct ata_port *ap);
149 static void pdc_pata_error_handler(struct ata_port *ap);
150 static void pdc_sata_error_handler(struct ata_port *ap);
151 static void pdc_post_internal_cmd(struct ata_queued_cmd *qc);
152 static int pdc_pata_cable_detect(struct ata_port *ap);
153 static int pdc_sata_cable_detect(struct ata_port *ap);
155 static struct scsi_host_template pdc_ata_sht = {
156 .module = THIS_MODULE,
158 .ioctl = ata_scsi_ioctl,
159 .queuecommand = ata_scsi_queuecmd,
160 .can_queue = ATA_DEF_QUEUE,
161 .this_id = ATA_SHT_THIS_ID,
162 .sg_tablesize = PDC_MAX_PRD,
163 .cmd_per_lun = ATA_SHT_CMD_PER_LUN,
164 .emulated = ATA_SHT_EMULATED,
165 .use_clustering = ATA_SHT_USE_CLUSTERING,
166 .proc_name = DRV_NAME,
167 .dma_boundary = ATA_DMA_BOUNDARY,
168 .slave_configure = ata_scsi_slave_config,
169 .slave_destroy = ata_scsi_slave_destroy,
170 .bios_param = ata_std_bios_param,
173 static const struct ata_port_operations pdc_sata_ops = {
174 .tf_load = pdc_tf_load_mmio,
175 .tf_read = ata_tf_read,
176 .check_status = ata_check_status,
177 .exec_command = pdc_exec_command_mmio,
178 .dev_select = ata_std_dev_select,
179 .check_atapi_dma = pdc_check_atapi_dma,
181 .qc_prep = pdc_qc_prep,
182 .qc_issue = pdc_qc_issue_prot,
183 .freeze = pdc_freeze,
185 .error_handler = pdc_sata_error_handler,
186 .post_internal_cmd = pdc_post_internal_cmd,
187 .cable_detect = pdc_sata_cable_detect,
188 .data_xfer = ata_data_xfer,
189 .irq_clear = pdc_irq_clear,
190 .irq_on = ata_irq_on,
192 .scr_read = pdc_sata_scr_read,
193 .scr_write = pdc_sata_scr_write,
194 .port_start = pdc_sata_port_start,
197 /* First-generation chips need a more restrictive ->check_atapi_dma op */
198 static const struct ata_port_operations pdc_old_sata_ops = {
199 .tf_load = pdc_tf_load_mmio,
200 .tf_read = ata_tf_read,
201 .check_status = ata_check_status,
202 .exec_command = pdc_exec_command_mmio,
203 .dev_select = ata_std_dev_select,
204 .check_atapi_dma = pdc_old_sata_check_atapi_dma,
206 .qc_prep = pdc_qc_prep,
207 .qc_issue = pdc_qc_issue_prot,
208 .freeze = pdc_freeze,
210 .error_handler = pdc_sata_error_handler,
211 .post_internal_cmd = pdc_post_internal_cmd,
212 .cable_detect = pdc_sata_cable_detect,
213 .data_xfer = ata_data_xfer,
214 .irq_clear = pdc_irq_clear,
215 .irq_on = ata_irq_on,
217 .scr_read = pdc_sata_scr_read,
218 .scr_write = pdc_sata_scr_write,
219 .port_start = pdc_sata_port_start,
222 static const struct ata_port_operations pdc_pata_ops = {
223 .tf_load = pdc_tf_load_mmio,
224 .tf_read = ata_tf_read,
225 .check_status = ata_check_status,
226 .exec_command = pdc_exec_command_mmio,
227 .dev_select = ata_std_dev_select,
228 .check_atapi_dma = pdc_check_atapi_dma,
230 .qc_prep = pdc_qc_prep,
231 .qc_issue = pdc_qc_issue_prot,
232 .freeze = pdc_freeze,
234 .error_handler = pdc_pata_error_handler,
235 .post_internal_cmd = pdc_post_internal_cmd,
236 .cable_detect = pdc_pata_cable_detect,
237 .data_xfer = ata_data_xfer,
238 .irq_clear = pdc_irq_clear,
239 .irq_on = ata_irq_on,
241 .port_start = pdc_common_port_start,
244 static const struct ata_port_info pdc_port_info[] = {
247 .flags = PDC_COMMON_FLAGS | ATA_FLAG_SATA |
249 .pio_mask = 0x1f, /* pio0-4 */
250 .mwdma_mask = 0x07, /* mwdma0-2 */
251 .udma_mask = ATA_UDMA6,
252 .port_ops = &pdc_old_sata_ops,
257 .flags = PDC_COMMON_FLAGS | ATA_FLAG_SLAVE_POSS,
258 .pio_mask = 0x1f, /* pio0-4 */
259 .mwdma_mask = 0x07, /* mwdma0-2 */
260 .udma_mask = ATA_UDMA6,
261 .port_ops = &pdc_pata_ops,
266 .flags = PDC_COMMON_FLAGS | ATA_FLAG_SATA |
268 .pio_mask = 0x1f, /* pio0-4 */
269 .mwdma_mask = 0x07, /* mwdma0-2 */
270 .udma_mask = ATA_UDMA6,
271 .port_ops = &pdc_old_sata_ops,
276 .flags = PDC_COMMON_FLAGS | ATA_FLAG_SLAVE_POSS |
278 .pio_mask = 0x1f, /* pio0-4 */
279 .mwdma_mask = 0x07, /* mwdma0-2 */
280 .udma_mask = ATA_UDMA6,
281 .port_ops = &pdc_pata_ops,
286 .flags = PDC_COMMON_FLAGS | ATA_FLAG_SATA |
287 PDC_FLAG_GEN_II | PDC_FLAG_SATA_PATA,
288 .pio_mask = 0x1f, /* pio0-4 */
289 .mwdma_mask = 0x07, /* mwdma0-2 */
290 .udma_mask = ATA_UDMA6,
291 .port_ops = &pdc_sata_ops,
296 .flags = PDC_COMMON_FLAGS | ATA_FLAG_SLAVE_POSS |
298 .pio_mask = 0x1f, /* pio0-4 */
299 .mwdma_mask = 0x07, /* mwdma0-2 */
300 .udma_mask = ATA_UDMA6,
301 .port_ops = &pdc_pata_ops,
306 .flags = PDC_COMMON_FLAGS | ATA_FLAG_SATA |
307 PDC_FLAG_GEN_II | PDC_FLAG_4_PORTS,
308 .pio_mask = 0x1f, /* pio0-4 */
309 .mwdma_mask = 0x07, /* mwdma0-2 */
310 .udma_mask = ATA_UDMA6,
311 .port_ops = &pdc_sata_ops,
315 static const struct pci_device_id pdc_ata_pci_tbl[] = {
316 { PCI_VDEVICE(PROMISE, 0x3371), board_2037x },
317 { PCI_VDEVICE(PROMISE, 0x3373), board_2037x },
318 { PCI_VDEVICE(PROMISE, 0x3375), board_2037x },
319 { PCI_VDEVICE(PROMISE, 0x3376), board_2037x },
320 { PCI_VDEVICE(PROMISE, 0x3570), board_2057x },
321 { PCI_VDEVICE(PROMISE, 0x3571), board_2057x },
322 { PCI_VDEVICE(PROMISE, 0x3574), board_2057x },
323 { PCI_VDEVICE(PROMISE, 0x3577), board_2057x },
324 { PCI_VDEVICE(PROMISE, 0x3d73), board_2057x },
325 { PCI_VDEVICE(PROMISE, 0x3d75), board_2057x },
327 { PCI_VDEVICE(PROMISE, 0x3318), board_20319 },
328 { PCI_VDEVICE(PROMISE, 0x3319), board_20319 },
329 { PCI_VDEVICE(PROMISE, 0x3515), board_40518 },
330 { PCI_VDEVICE(PROMISE, 0x3519), board_40518 },
331 { PCI_VDEVICE(PROMISE, 0x3d17), board_40518 },
332 { PCI_VDEVICE(PROMISE, 0x3d18), board_40518 },
334 { PCI_VDEVICE(PROMISE, 0x6629), board_20619 },
336 { } /* terminate list */
339 static struct pci_driver pdc_ata_pci_driver = {
341 .id_table = pdc_ata_pci_tbl,
342 .probe = pdc_ata_init_one,
343 .remove = ata_pci_remove_one,
346 static int pdc_common_port_start(struct ata_port *ap)
348 struct device *dev = ap->host->dev;
349 struct pdc_port_priv *pp;
352 rc = ata_port_start(ap);
356 pp = devm_kzalloc(dev, sizeof(*pp), GFP_KERNEL);
360 pp->pkt = dmam_alloc_coherent(dev, 128, &pp->pkt_dma, GFP_KERNEL);
364 ap->private_data = pp;
369 static int pdc_sata_port_start(struct ata_port *ap)
373 rc = pdc_common_port_start(ap);
377 /* fix up PHYMODE4 align timing */
378 if (ap->flags & PDC_FLAG_GEN_II) {
379 void __iomem *mmio = ap->ioaddr.scr_addr;
382 tmp = readl(mmio + 0x014);
383 tmp = (tmp & ~3) | 1; /* set bits 1:0 = 0:1 */
384 writel(tmp, mmio + 0x014);
390 static void pdc_reset_port(struct ata_port *ap)
392 void __iomem *mmio = ap->ioaddr.cmd_addr + PDC_CTLSTAT;
396 for (i = 11; i > 0; i--) {
409 readl(mmio); /* flush */
412 static int pdc_pata_cable_detect(struct ata_port *ap)
415 void __iomem *mmio = ap->ioaddr.cmd_addr + PDC_CTLSTAT + 0x03;
419 return ATA_CBL_PATA40;
420 return ATA_CBL_PATA80;
423 static int pdc_sata_cable_detect(struct ata_port *ap)
428 static int pdc_sata_scr_read(struct ata_port *ap, unsigned int sc_reg, u32 *val)
430 if (sc_reg > SCR_CONTROL)
432 *val = readl(ap->ioaddr.scr_addr + (sc_reg * 4));
436 static int pdc_sata_scr_write(struct ata_port *ap, unsigned int sc_reg, u32 val)
438 if (sc_reg > SCR_CONTROL)
440 writel(val, ap->ioaddr.scr_addr + (sc_reg * 4));
444 static void pdc_atapi_pkt(struct ata_queued_cmd *qc)
446 struct ata_port *ap = qc->ap;
447 dma_addr_t sg_table = ap->prd_dma;
448 unsigned int cdb_len = qc->dev->cdb_len;
450 struct pdc_port_priv *pp = ap->private_data;
452 u32 *buf32 = (u32 *) buf;
453 unsigned int dev_sel, feature, nbytes;
455 /* set control bits (byte 0), zero delay seq id (byte 3),
456 * and seq id (byte 2)
458 switch (qc->tf.protocol) {
459 case ATA_PROT_ATAPI_DMA:
460 if (!(qc->tf.flags & ATA_TFLAG_WRITE))
461 buf32[0] = cpu_to_le32(PDC_PKT_READ);
465 case ATA_PROT_ATAPI_NODATA:
466 buf32[0] = cpu_to_le32(PDC_PKT_NODATA);
472 buf32[1] = cpu_to_le32(sg_table); /* S/G table addr */
473 buf32[2] = 0; /* no next-packet */
476 if (sata_scr_valid(&ap->link)) {
477 dev_sel = PDC_DEVICE_SATA;
479 dev_sel = ATA_DEVICE_OBS;
480 if (qc->dev->devno != 0)
483 buf[12] = (1 << 5) | ATA_REG_DEVICE;
485 buf[14] = (1 << 5) | ATA_REG_DEVICE | PDC_PKT_CLEAR_BSY;
486 buf[15] = dev_sel; /* once more, waiting for BSY to clear */
488 buf[16] = (1 << 5) | ATA_REG_NSECT;
490 buf[18] = (1 << 5) | ATA_REG_LBAL;
493 /* set feature and byte counter registers */
494 if (qc->tf.protocol != ATA_PROT_ATAPI_DMA) {
495 feature = PDC_FEATURE_ATAPI_PIO;
496 /* set byte counter register to real transfer byte count */
501 feature = PDC_FEATURE_ATAPI_DMA;
502 /* set byte counter register to 0 */
505 buf[20] = (1 << 5) | ATA_REG_FEATURE;
507 buf[22] = (1 << 5) | ATA_REG_BYTEL;
508 buf[23] = nbytes & 0xFF;
509 buf[24] = (1 << 5) | ATA_REG_BYTEH;
510 buf[25] = (nbytes >> 8) & 0xFF;
512 /* send ATAPI packet command 0xA0 */
513 buf[26] = (1 << 5) | ATA_REG_CMD;
514 buf[27] = ATA_CMD_PACKET;
516 /* select drive and check DRQ */
517 buf[28] = (1 << 5) | ATA_REG_DEVICE | PDC_PKT_WAIT_DRDY;
520 /* we can represent cdb lengths 2/4/6/8/10/12/14/16 */
521 BUG_ON(cdb_len & ~0x1E);
523 /* append the CDB as the final part */
524 buf[30] = (((cdb_len >> 1) & 7) << 5) | ATA_REG_DATA | PDC_LAST_REG;
525 memcpy(buf+31, cdb, cdb_len);
529 * pdc_fill_sg - Fill PCI IDE PRD table
530 * @qc: Metadata associated with taskfile to be transferred
532 * Fill PCI IDE PRD (scatter-gather) table with segments
533 * associated with the current disk command.
534 * Make sure hardware does not choke on it.
537 * spin_lock_irqsave(host lock)
540 static void pdc_fill_sg(struct ata_queued_cmd *qc)
542 struct ata_port *ap = qc->ap;
543 struct scatterlist *sg;
545 const u32 SG_COUNT_ASIC_BUG = 41*4;
547 if (!(qc->flags & ATA_QCFLAG_DMAMAP))
550 WARN_ON(qc->__sg == NULL);
551 WARN_ON(qc->n_elem == 0 && qc->pad_len == 0);
554 ata_for_each_sg(sg, qc) {
558 /* determine if physical DMA addr spans 64K boundary.
559 * Note h/w doesn't support 64-bit, so we unconditionally
560 * truncate dma_addr_t to u32.
562 addr = (u32) sg_dma_address(sg);
563 sg_len = sg_dma_len(sg);
566 offset = addr & 0xffff;
568 if ((offset + sg_len) > 0x10000)
569 len = 0x10000 - offset;
571 ap->prd[idx].addr = cpu_to_le32(addr);
572 ap->prd[idx].flags_len = cpu_to_le32(len & 0xffff);
573 VPRINTK("PRD[%u] = (0x%X, 0x%X)\n", idx, addr, len);
582 u32 len = le32_to_cpu(ap->prd[idx - 1].flags_len);
584 if (len > SG_COUNT_ASIC_BUG) {
587 VPRINTK("Splitting last PRD.\n");
589 addr = le32_to_cpu(ap->prd[idx - 1].addr);
590 ap->prd[idx - 1].flags_len = cpu_to_le32(len - SG_COUNT_ASIC_BUG);
591 VPRINTK("PRD[%u] = (0x%X, 0x%X)\n", idx - 1, addr, SG_COUNT_ASIC_BUG);
593 addr = addr + len - SG_COUNT_ASIC_BUG;
594 len = SG_COUNT_ASIC_BUG;
595 ap->prd[idx].addr = cpu_to_le32(addr);
596 ap->prd[idx].flags_len = cpu_to_le32(len);
597 VPRINTK("PRD[%u] = (0x%X, 0x%X)\n", idx, addr, len);
602 ap->prd[idx - 1].flags_len |= cpu_to_le32(ATA_PRD_EOT);
606 static void pdc_qc_prep(struct ata_queued_cmd *qc)
608 struct pdc_port_priv *pp = qc->ap->private_data;
613 switch (qc->tf.protocol) {
618 case ATA_PROT_NODATA:
619 i = pdc_pkt_header(&qc->tf, qc->ap->prd_dma,
620 qc->dev->devno, pp->pkt);
622 if (qc->tf.flags & ATA_TFLAG_LBA48)
623 i = pdc_prep_lba48(&qc->tf, pp->pkt, i);
625 i = pdc_prep_lba28(&qc->tf, pp->pkt, i);
627 pdc_pkt_footer(&qc->tf, pp->pkt, i);
634 case ATA_PROT_ATAPI_DMA:
637 case ATA_PROT_ATAPI_NODATA:
646 static void pdc_freeze(struct ata_port *ap)
648 void __iomem *mmio = ap->ioaddr.cmd_addr;
651 tmp = readl(mmio + PDC_CTLSTAT);
652 tmp |= PDC_IRQ_DISABLE;
653 tmp &= ~PDC_DMA_ENABLE;
654 writel(tmp, mmio + PDC_CTLSTAT);
655 readl(mmio + PDC_CTLSTAT); /* flush */
658 static void pdc_thaw(struct ata_port *ap)
660 void __iomem *mmio = ap->ioaddr.cmd_addr;
664 readl(mmio + PDC_INT_SEQMASK);
666 /* turn IRQ back on */
667 tmp = readl(mmio + PDC_CTLSTAT);
668 tmp &= ~PDC_IRQ_DISABLE;
669 writel(tmp, mmio + PDC_CTLSTAT);
670 readl(mmio + PDC_CTLSTAT); /* flush */
673 static void pdc_common_error_handler(struct ata_port *ap, ata_reset_fn_t hardreset)
675 if (!(ap->pflags & ATA_PFLAG_FROZEN))
678 /* perform recovery */
679 ata_do_eh(ap, ata_std_prereset, ata_std_softreset, hardreset,
683 static void pdc_pata_error_handler(struct ata_port *ap)
685 pdc_common_error_handler(ap, NULL);
688 static void pdc_sata_error_handler(struct ata_port *ap)
690 pdc_common_error_handler(ap, sata_std_hardreset);
693 static void pdc_post_internal_cmd(struct ata_queued_cmd *qc)
695 struct ata_port *ap = qc->ap;
697 /* make DMA engine forget about the failed command */
698 if (qc->flags & ATA_QCFLAG_FAILED)
702 static void pdc_error_intr(struct ata_port *ap, struct ata_queued_cmd *qc,
703 u32 port_status, u32 err_mask)
705 struct ata_eh_info *ehi = &ap->link.eh_info;
706 unsigned int ac_err_mask = 0;
708 ata_ehi_clear_desc(ehi);
709 ata_ehi_push_desc(ehi, "port_status 0x%08x", port_status);
710 port_status &= err_mask;
712 if (port_status & PDC_DRIVE_ERR)
713 ac_err_mask |= AC_ERR_DEV;
714 if (port_status & (PDC_OVERRUN_ERR | PDC_UNDERRUN_ERR))
715 ac_err_mask |= AC_ERR_HSM;
716 if (port_status & (PDC2_ATA_HBA_ERR | PDC2_ATA_DMA_CNT_ERR))
717 ac_err_mask |= AC_ERR_ATA_BUS;
718 if (port_status & (PDC_PH_ERR | PDC_SH_ERR | PDC_DH_ERR | PDC2_HTO_ERR
719 | PDC_PCI_SYS_ERR | PDC1_PCI_PARITY_ERR))
720 ac_err_mask |= AC_ERR_HOST_BUS;
722 if (sata_scr_valid(&ap->link)) {
725 pdc_sata_scr_read(ap, SCR_ERROR, &serror);
726 ehi->serror |= serror;
729 qc->err_mask |= ac_err_mask;
736 static inline unsigned int pdc_host_intr(struct ata_port *ap,
737 struct ata_queued_cmd *qc)
739 unsigned int handled = 0;
740 void __iomem *port_mmio = ap->ioaddr.cmd_addr;
741 u32 port_status, err_mask;
743 err_mask = PDC_ERR_MASK;
744 if (ap->flags & PDC_FLAG_GEN_II)
745 err_mask &= ~PDC1_ERR_MASK;
747 err_mask &= ~PDC2_ERR_MASK;
748 port_status = readl(port_mmio + PDC_GLOBAL_CTL);
749 if (unlikely(port_status & err_mask)) {
750 pdc_error_intr(ap, qc, port_status, err_mask);
754 switch (qc->tf.protocol) {
756 case ATA_PROT_NODATA:
757 case ATA_PROT_ATAPI_DMA:
758 case ATA_PROT_ATAPI_NODATA:
759 qc->err_mask |= ac_err_mask(ata_wait_idle(ap));
765 ap->stats.idle_irq++;
772 static void pdc_irq_clear(struct ata_port *ap)
774 struct ata_host *host = ap->host;
775 void __iomem *mmio = host->iomap[PDC_MMIO_BAR];
777 readl(mmio + PDC_INT_SEQMASK);
780 static int pdc_is_sataii_tx4(unsigned long flags)
782 const unsigned long mask = PDC_FLAG_GEN_II | PDC_FLAG_4_PORTS;
783 return (flags & mask) == mask;
786 static unsigned int pdc_port_no_to_ata_no(unsigned int port_no,
789 static const unsigned char sataii_tx4_port_remap[4] = { 3, 1, 0, 2};
790 return is_sataii_tx4 ? sataii_tx4_port_remap[port_no] : port_no;
793 static irqreturn_t pdc_interrupt(int irq, void *dev_instance)
795 struct ata_host *host = dev_instance;
799 unsigned int handled = 0;
800 void __iomem *mmio_base;
801 unsigned int hotplug_offset, ata_no;
807 if (!host || !host->iomap[PDC_MMIO_BAR]) {
808 VPRINTK("QUICK EXIT\n");
812 mmio_base = host->iomap[PDC_MMIO_BAR];
814 /* read and clear hotplug flags for all ports */
815 if (host->ports[0]->flags & PDC_FLAG_GEN_II)
816 hotplug_offset = PDC2_SATA_PLUG_CSR;
818 hotplug_offset = PDC_SATA_PLUG_CSR;
819 hotplug_status = readl(mmio_base + hotplug_offset);
820 if (hotplug_status & 0xff)
821 writel(hotplug_status | 0xff, mmio_base + hotplug_offset);
822 hotplug_status &= 0xff; /* clear uninteresting bits */
824 /* reading should also clear interrupts */
825 mask = readl(mmio_base + PDC_INT_SEQMASK);
827 if (mask == 0xffffffff && hotplug_status == 0) {
828 VPRINTK("QUICK EXIT 2\n");
832 spin_lock(&host->lock);
834 mask &= 0xffff; /* only 16 tags possible */
835 if (mask == 0 && hotplug_status == 0) {
836 VPRINTK("QUICK EXIT 3\n");
840 writel(mask, mmio_base + PDC_INT_SEQMASK);
842 is_sataii_tx4 = pdc_is_sataii_tx4(host->ports[0]->flags);
844 for (i = 0; i < host->n_ports; i++) {
845 VPRINTK("port %u\n", i);
848 /* check for a plug or unplug event */
849 ata_no = pdc_port_no_to_ata_no(i, is_sataii_tx4);
850 tmp = hotplug_status & (0x11 << ata_no);
852 !(ap->flags & ATA_FLAG_DISABLED)) {
853 struct ata_eh_info *ehi = &ap->link.eh_info;
854 ata_ehi_clear_desc(ehi);
855 ata_ehi_hotplugged(ehi);
856 ata_ehi_push_desc(ehi, "hotplug_status %#x", tmp);
862 /* check for a packet interrupt */
863 tmp = mask & (1 << (i + 1));
865 !(ap->flags & ATA_FLAG_DISABLED)) {
866 struct ata_queued_cmd *qc;
868 qc = ata_qc_from_tag(ap, ap->link.active_tag);
869 if (qc && (!(qc->tf.flags & ATA_TFLAG_POLLING)))
870 handled += pdc_host_intr(ap, qc);
877 spin_unlock(&host->lock);
878 return IRQ_RETVAL(handled);
881 static inline void pdc_packet_start(struct ata_queued_cmd *qc)
883 struct ata_port *ap = qc->ap;
884 struct pdc_port_priv *pp = ap->private_data;
885 void __iomem *mmio = ap->host->iomap[PDC_MMIO_BAR];
886 unsigned int port_no = ap->port_no;
887 u8 seq = (u8) (port_no + 1);
889 VPRINTK("ENTER, ap %p\n", ap);
891 writel(0x00000001, mmio + (seq * 4));
892 readl(mmio + (seq * 4)); /* flush */
895 wmb(); /* flush PRD, pkt writes */
896 writel(pp->pkt_dma, ap->ioaddr.cmd_addr + PDC_PKT_SUBMIT);
897 readl(ap->ioaddr.cmd_addr + PDC_PKT_SUBMIT); /* flush */
900 static unsigned int pdc_qc_issue_prot(struct ata_queued_cmd *qc)
902 switch (qc->tf.protocol) {
903 case ATA_PROT_ATAPI_NODATA:
904 if (qc->dev->flags & ATA_DFLAG_CDB_INTR)
907 case ATA_PROT_NODATA:
908 if (qc->tf.flags & ATA_TFLAG_POLLING)
911 case ATA_PROT_ATAPI_DMA:
913 pdc_packet_start(qc);
920 return ata_qc_issue_prot(qc);
923 static void pdc_tf_load_mmio(struct ata_port *ap, const struct ata_taskfile *tf)
925 WARN_ON(tf->protocol == ATA_PROT_DMA ||
926 tf->protocol == ATA_PROT_ATAPI_DMA);
930 static void pdc_exec_command_mmio(struct ata_port *ap,
931 const struct ata_taskfile *tf)
933 WARN_ON(tf->protocol == ATA_PROT_DMA ||
934 tf->protocol == ATA_PROT_ATAPI_DMA);
935 ata_exec_command(ap, tf);
938 static int pdc_check_atapi_dma(struct ata_queued_cmd *qc)
940 u8 *scsicmd = qc->scsicmd->cmnd;
941 int pio = 1; /* atapi dma off by default */
943 /* Whitelist commands that may use DMA. */
944 switch (scsicmd[0]) {
951 case 0xad: /* READ_DVD_STRUCTURE */
952 case 0xbe: /* READ_CD */
955 /* -45150 (FFFF4FA2) to -1 (FFFFFFFF) shall use PIO mode */
956 if (scsicmd[0] == WRITE_10) {
962 if (lba >= 0xFFFF4FA2)
968 static int pdc_old_sata_check_atapi_dma(struct ata_queued_cmd *qc)
970 /* First generation chips cannot use ATAPI DMA on SATA ports */
974 static void pdc_ata_setup_port(struct ata_port *ap,
975 void __iomem *base, void __iomem *scr_addr)
977 ap->ioaddr.cmd_addr = base;
978 ap->ioaddr.data_addr = base;
979 ap->ioaddr.feature_addr =
980 ap->ioaddr.error_addr = base + 0x4;
981 ap->ioaddr.nsect_addr = base + 0x8;
982 ap->ioaddr.lbal_addr = base + 0xc;
983 ap->ioaddr.lbam_addr = base + 0x10;
984 ap->ioaddr.lbah_addr = base + 0x14;
985 ap->ioaddr.device_addr = base + 0x18;
986 ap->ioaddr.command_addr =
987 ap->ioaddr.status_addr = base + 0x1c;
988 ap->ioaddr.altstatus_addr =
989 ap->ioaddr.ctl_addr = base + 0x38;
990 ap->ioaddr.scr_addr = scr_addr;
993 static void pdc_host_init(struct ata_host *host)
995 void __iomem *mmio = host->iomap[PDC_MMIO_BAR];
996 int is_gen2 = host->ports[0]->flags & PDC_FLAG_GEN_II;
1001 hotplug_offset = PDC2_SATA_PLUG_CSR;
1003 hotplug_offset = PDC_SATA_PLUG_CSR;
1006 * Except for the hotplug stuff, this is voodoo from the
1007 * Promise driver. Label this entire section
1008 * "TODO: figure out why we do this"
1011 /* enable BMR_BURST, maybe change FIFO_SHD to 8 dwords */
1012 tmp = readl(mmio + PDC_FLASH_CTL);
1013 tmp |= 0x02000; /* bit 13 (enable bmr burst) */
1015 tmp |= 0x10000; /* bit 16 (fifo threshold at 8 dw) */
1016 writel(tmp, mmio + PDC_FLASH_CTL);
1018 /* clear plug/unplug flags for all ports */
1019 tmp = readl(mmio + hotplug_offset);
1020 writel(tmp | 0xff, mmio + hotplug_offset);
1022 /* unmask plug/unplug ints */
1023 tmp = readl(mmio + hotplug_offset);
1024 writel(tmp & ~0xff0000, mmio + hotplug_offset);
1026 /* don't initialise TBG or SLEW on 2nd generation chips */
1030 /* reduce TBG clock to 133 Mhz. */
1031 tmp = readl(mmio + PDC_TBG_MODE);
1032 tmp &= ~0x30000; /* clear bit 17, 16*/
1033 tmp |= 0x10000; /* set bit 17:16 = 0:1 */
1034 writel(tmp, mmio + PDC_TBG_MODE);
1036 readl(mmio + PDC_TBG_MODE); /* flush */
1039 /* adjust slew rate control register. */
1040 tmp = readl(mmio + PDC_SLEW_CTL);
1041 tmp &= 0xFFFFF03F; /* clear bit 11 ~ 6 */
1042 tmp |= 0x00000900; /* set bit 11-9 = 100b , bit 8-6 = 100 */
1043 writel(tmp, mmio + PDC_SLEW_CTL);
1046 static int pdc_ata_init_one(struct pci_dev *pdev,
1047 const struct pci_device_id *ent)
1049 static int printed_version;
1050 const struct ata_port_info *pi = &pdc_port_info[ent->driver_data];
1051 const struct ata_port_info *ppi[PDC_MAX_PORTS];
1052 struct ata_host *host;
1057 if (!printed_version++)
1058 dev_printk(KERN_DEBUG, &pdev->dev, "version " DRV_VERSION "\n");
1060 /* enable and acquire resources */
1061 rc = pcim_enable_device(pdev);
1065 rc = pcim_iomap_regions(pdev, 1 << PDC_MMIO_BAR, DRV_NAME);
1067 pcim_pin_device(pdev);
1070 base = pcim_iomap_table(pdev)[PDC_MMIO_BAR];
1072 /* determine port configuration and setup host */
1074 if (pi->flags & PDC_FLAG_4_PORTS)
1076 for (i = 0; i < n_ports; i++)
1079 if (pi->flags & PDC_FLAG_SATA_PATA) {
1080 u8 tmp = readb(base + PDC_FLASH_CTL+1);
1082 ppi[n_ports++] = pi + 1;
1085 host = ata_host_alloc_pinfo(&pdev->dev, ppi, n_ports);
1087 dev_printk(KERN_ERR, &pdev->dev, "failed to allocate host\n");
1090 host->iomap = pcim_iomap_table(pdev);
1092 is_sataii_tx4 = pdc_is_sataii_tx4(pi->flags);
1093 for (i = 0; i < host->n_ports; i++) {
1094 struct ata_port *ap = host->ports[i];
1095 unsigned int ata_no = pdc_port_no_to_ata_no(i, is_sataii_tx4);
1096 unsigned int port_offset = 0x200 + ata_no * 0x80;
1097 unsigned int scr_offset = 0x400 + ata_no * 0x100;
1099 pdc_ata_setup_port(ap, base + port_offset, base + scr_offset);
1101 ata_port_pbar_desc(ap, PDC_MMIO_BAR, -1, "mmio");
1102 ata_port_pbar_desc(ap, PDC_MMIO_BAR, port_offset, "port");
1105 /* initialize adapter */
1106 pdc_host_init(host);
1108 rc = pci_set_dma_mask(pdev, ATA_DMA_MASK);
1111 rc = pci_set_consistent_dma_mask(pdev, ATA_DMA_MASK);
1115 /* start host, request IRQ and attach */
1116 pci_set_master(pdev);
1117 return ata_host_activate(host, pdev->irq, pdc_interrupt, IRQF_SHARED,
1121 static int __init pdc_ata_init(void)
1123 return pci_register_driver(&pdc_ata_pci_driver);
1126 static void __exit pdc_ata_exit(void)
1128 pci_unregister_driver(&pdc_ata_pci_driver);
1131 MODULE_AUTHOR("Jeff Garzik");
1132 MODULE_DESCRIPTION("Promise ATA TX2/TX4/TX4000 low-level driver");
1133 MODULE_LICENSE("GPL");
1134 MODULE_DEVICE_TABLE(pci, pdc_ata_pci_tbl);
1135 MODULE_VERSION(DRV_VERSION);
1137 module_init(pdc_ata_init);
1138 module_exit(pdc_ata_exit);