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Jaya Kumarf5b2d8b2005-11-09 23:58:16 +01001/*
Jaya Kumarf5b2d8b2005-11-09 23:58:16 +01002 * Copyright (C) 2004-2005 Advanced Micro Devices, Inc.
Bartlomiej Zolnierkiewiczbc0b0b52007-08-01 23:46:45 +02003 * Copyright (C) 2007 Bartlomiej Zolnierkiewicz
Jaya Kumarf5b2d8b2005-11-09 23:58:16 +01004 *
5 * History:
6 * 09/20/2005 - Jaya Kumar <jayakumar.ide@gmail.com>
7 * - Reworked tuneproc, set_drive, misc mods to prep for mainline
8 * - Work was sponsored by CIS (M) Sdn Bhd.
9 * Ported to Kernel 2.6.11 on June 26, 2005 by
10 * Wolfgang Zuleger <wolfgang.zuleger@gmx.de>
11 * Alexander Kiausch <alex.kiausch@t-online.de>
12 * Originally developed by AMD for 2.4/2.6
13 *
14 * Development of this chipset driver was funded
15 * by the nice folks at National Semiconductor/AMD.
16 *
17 * This program is free software; you can redistribute it and/or modify it
18 * under the terms of the GNU General Public License version 2 as published by
19 * the Free Software Foundation.
20 *
21 * Documentation:
22 * CS5535 documentation available from AMD
23 */
24
Jaya Kumarf5b2d8b2005-11-09 23:58:16 +010025#include <linux/module.h>
26#include <linux/pci.h>
27#include <linux/ide.h>
28
Bartlomiej Zolnierkiewiczced3ec82008-07-24 22:53:32 +020029#define DRV_NAME "cs5535"
30
Jaya Kumarf5b2d8b2005-11-09 23:58:16 +010031#define MSR_ATAC_BASE 0x51300000
32#define ATAC_GLD_MSR_CAP (MSR_ATAC_BASE+0)
33#define ATAC_GLD_MSR_CONFIG (MSR_ATAC_BASE+0x01)
34#define ATAC_GLD_MSR_SMI (MSR_ATAC_BASE+0x02)
35#define ATAC_GLD_MSR_ERROR (MSR_ATAC_BASE+0x03)
36#define ATAC_GLD_MSR_PM (MSR_ATAC_BASE+0x04)
37#define ATAC_GLD_MSR_DIAG (MSR_ATAC_BASE+0x05)
38#define ATAC_IO_BAR (MSR_ATAC_BASE+0x08)
39#define ATAC_RESET (MSR_ATAC_BASE+0x10)
40#define ATAC_CH0D0_PIO (MSR_ATAC_BASE+0x20)
41#define ATAC_CH0D0_DMA (MSR_ATAC_BASE+0x21)
42#define ATAC_CH0D1_PIO (MSR_ATAC_BASE+0x22)
43#define ATAC_CH0D1_DMA (MSR_ATAC_BASE+0x23)
44#define ATAC_PCI_ABRTERR (MSR_ATAC_BASE+0x24)
45#define ATAC_BM0_CMD_PRIM 0x00
46#define ATAC_BM0_STS_PRIM 0x02
47#define ATAC_BM0_PRD 0x04
48#define CS5535_CABLE_DETECT 0x48
49
Joe Perchesa1c6d282007-12-24 15:23:42 +010050/* Format I PIO settings. We separate out cmd and data for safer timings */
Jaya Kumarf5b2d8b2005-11-09 23:58:16 +010051
52static unsigned int cs5535_pio_cmd_timings[5] =
53{ 0xF7F4, 0x53F3, 0x13F1, 0x5131, 0x1131 };
54static unsigned int cs5535_pio_dta_timings[5] =
55{ 0xF7F4, 0xF173, 0x8141, 0x5131, 0x1131 };
56
57static unsigned int cs5535_mwdma_timings[3] =
58{ 0x7F0FFFF3, 0x7F035352, 0x7f024241 };
59
60static unsigned int cs5535_udma_timings[5] =
61{ 0x7F7436A1, 0x7F733481, 0x7F723261, 0x7F713161, 0x7F703061 };
62
63/* Macros to check if the register is the reset value - reset value is an
64 invalid timing and indicates the register has not been set previously */
65
66#define CS5535_BAD_PIO(timings) ( (timings&~0x80000000UL) == 0x00009172 )
67#define CS5535_BAD_DMA(timings) ( (timings & 0x000FFFFF) == 0x00077771 )
68
69/****
70 * cs5535_set_speed - Configure the chipset to the new speed
71 * @drive: Drive to set up
72 * @speed: desired speed
73 *
74 * cs5535_set_speed() configures the chipset to a new speed.
75 */
Bartlomiej Zolnierkiewiczf212ff22007-10-11 23:53:59 +020076static void cs5535_set_speed(ide_drive_t *drive, const u8 speed)
Jaya Kumarf5b2d8b2005-11-09 23:58:16 +010077{
Jaya Kumarf5b2d8b2005-11-09 23:58:16 +010078 u32 reg = 0, dummy;
Bartlomiej Zolnierkiewicz123995b2008-10-13 21:39:40 +020079 u8 unit = drive->dn & 1;
Jaya Kumarf5b2d8b2005-11-09 23:58:16 +010080
Jaya Kumarf5b2d8b2005-11-09 23:58:16 +010081 /* Set the PIO timings */
Bartlomiej Zolnierkiewiczbd887f72008-07-16 20:33:36 +020082 if (speed < XFER_SW_DMA_0) {
Bartlomiej Zolnierkiewicz7e59ea22008-10-10 22:39:26 +020083 ide_drive_t *pair = ide_get_pair_dev(drive);
Bartlomiej Zolnierkiewiczbc0b0b52007-08-01 23:46:45 +020084 u8 cmd, pioa;
Jaya Kumarf5b2d8b2005-11-09 23:58:16 +010085
Bartlomiej Zolnierkiewiczbc0b0b52007-08-01 23:46:45 +020086 cmd = pioa = speed - XFER_PIO_0;
87
Bartlomiej Zolnierkiewicz7e59ea22008-10-10 22:39:26 +020088 if (pair) {
Bartlomiej Zolnierkiewicza298dc02010-01-18 07:21:48 +000089 u8 piob = pair->pio_mode - XFER_PIO_0;
Bartlomiej Zolnierkiewiczbc0b0b52007-08-01 23:46:45 +020090
91 if (piob < cmd)
92 cmd = piob;
93 }
Jaya Kumarf5b2d8b2005-11-09 23:58:16 +010094
95 /* Write the speed of the current drive */
96 reg = (cs5535_pio_cmd_timings[cmd] << 16) |
97 cs5535_pio_dta_timings[pioa];
98 wrmsr(unit ? ATAC_CH0D1_PIO : ATAC_CH0D0_PIO, reg, 0);
99
100 /* And if nessesary - change the speed of the other drive */
101 rdmsr(unit ? ATAC_CH0D0_PIO : ATAC_CH0D1_PIO, reg, dummy);
102
103 if (((reg >> 16) & cs5535_pio_cmd_timings[cmd]) !=
104 cs5535_pio_cmd_timings[cmd]) {
105 reg &= 0x0000FFFF;
106 reg |= cs5535_pio_cmd_timings[cmd] << 16;
107 wrmsr(unit ? ATAC_CH0D0_PIO : ATAC_CH0D1_PIO, reg, 0);
108 }
109
110 /* Set bit 31 of the DMA register for PIO format 1 timings */
111 rdmsr(unit ? ATAC_CH0D1_DMA : ATAC_CH0D0_DMA, reg, dummy);
112 wrmsr(unit ? ATAC_CH0D1_DMA : ATAC_CH0D0_DMA,
113 reg | 0x80000000UL, 0);
114 } else {
115 rdmsr(unit ? ATAC_CH0D1_DMA : ATAC_CH0D0_DMA, reg, dummy);
116
117 reg &= 0x80000000UL; /* Preserve the PIO format bit */
118
Jordan Crouse32a70a82007-08-01 23:46:42 +0200119 if (speed >= XFER_UDMA_0 && speed <= XFER_UDMA_4)
Jaya Kumarf5b2d8b2005-11-09 23:58:16 +0100120 reg |= cs5535_udma_timings[speed - XFER_UDMA_0];
121 else if (speed >= XFER_MW_DMA_0 && speed <= XFER_MW_DMA_2)
122 reg |= cs5535_mwdma_timings[speed - XFER_MW_DMA_0];
123 else
124 return;
125
126 wrmsr(unit ? ATAC_CH0D1_DMA : ATAC_CH0D0_DMA, reg, 0);
127 }
128}
129
Bartlomiej Zolnierkiewicz88b2b322007-10-13 17:47:51 +0200130/**
131 * cs5535_set_dma_mode - set host controller for DMA mode
Bartlomiej Zolnierkiewicz87761682010-01-19 01:45:29 -0800132 * @hwif: port
Bartlomiej Zolnierkiewicz88b2b322007-10-13 17:47:51 +0200133 * @drive: drive
Jaya Kumarf5b2d8b2005-11-09 23:58:16 +0100134 *
Bartlomiej Zolnierkiewicz88b2b322007-10-13 17:47:51 +0200135 * Programs the chipset for DMA mode.
Jaya Kumarf5b2d8b2005-11-09 23:58:16 +0100136 */
Bartlomiej Zolnierkiewicz88b2b322007-10-13 17:47:51 +0200137
Bartlomiej Zolnierkiewicz87761682010-01-19 01:45:29 -0800138static void cs5535_set_dma_mode(ide_hwif_t *hwif, ide_drive_t *drive)
Jaya Kumarf5b2d8b2005-11-09 23:58:16 +0100139{
Bartlomiej Zolnierkiewicz87761682010-01-19 01:45:29 -0800140 cs5535_set_speed(drive, drive->dma_mode);
Jaya Kumarf5b2d8b2005-11-09 23:58:16 +0100141}
142
Bartlomiej Zolnierkiewicz26bcb872007-10-11 23:54:00 +0200143/**
Bartlomiej Zolnierkiewicz88b2b322007-10-13 17:47:51 +0200144 * cs5535_set_pio_mode - set host controller for PIO mode
Bartlomiej Zolnierkiewicze085b3c2010-01-19 01:44:41 -0800145 * @hwif: port
Bartlomiej Zolnierkiewicz26bcb872007-10-11 23:54:00 +0200146 * @drive: drive
Jaya Kumarf5b2d8b2005-11-09 23:58:16 +0100147 *
148 * A callback from the upper layers for PIO-only tuning.
149 */
Bartlomiej Zolnierkiewicz26bcb872007-10-11 23:54:00 +0200150
Bartlomiej Zolnierkiewicze085b3c2010-01-19 01:44:41 -0800151static void cs5535_set_pio_mode(ide_hwif_t *hwif, ide_drive_t *drive)
Jaya Kumarf5b2d8b2005-11-09 23:58:16 +0100152{
Bartlomiej Zolnierkiewicze085b3c2010-01-19 01:44:41 -0800153 cs5535_set_speed(drive, drive->pio_mode);
Jaya Kumarf5b2d8b2005-11-09 23:58:16 +0100154}
155
Bartlomiej Zolnierkiewiczf454cbe2008-08-05 18:17:04 +0200156static u8 cs5535_cable_detect(ide_hwif_t *hwif)
Jaya Kumarf5b2d8b2005-11-09 23:58:16 +0100157{
Bartlomiej Zolnierkiewiczb4d1c732008-02-02 19:56:29 +0100158 struct pci_dev *dev = to_pci_dev(hwif->dev);
Jaya Kumarf5b2d8b2005-11-09 23:58:16 +0100159 u8 bit;
160
161 /* if a 80 wire cable was detected */
162 pci_read_config_byte(dev, CS5535_CABLE_DETECT, &bit);
Bartlomiej Zolnierkiewicz49521f92007-07-09 23:17:58 +0200163
164 return (bit & 1) ? ATA_CBL_PATA80 : ATA_CBL_PATA40;
Jaya Kumarf5b2d8b2005-11-09 23:58:16 +0100165}
166
Bartlomiej Zolnierkiewiczac95bee2008-04-26 22:25:14 +0200167static const struct ide_port_ops cs5535_port_ops = {
168 .set_pio_mode = cs5535_set_pio_mode,
169 .set_dma_mode = cs5535_set_dma_mode,
170 .cable_detect = cs5535_cable_detect,
171};
Jaya Kumarf5b2d8b2005-11-09 23:58:16 +0100172
Andi Kleene6b53702012-10-04 17:11:48 -0700173static const struct ide_port_info cs5535_chipset __devinitconst = {
Bartlomiej Zolnierkiewiczced3ec82008-07-24 22:53:32 +0200174 .name = DRV_NAME,
Bartlomiej Zolnierkiewiczac95bee2008-04-26 22:25:14 +0200175 .port_ops = &cs5535_port_ops,
Bartlomiej Zolnierkiewicz3b2a5c72008-07-23 19:55:56 +0200176 .host_flags = IDE_HFLAG_SINGLE | IDE_HFLAG_POST_SET_MODE,
Bartlomiej Zolnierkiewicz4099d142007-07-20 01:11:59 +0200177 .pio_mask = ATA_PIO4,
Bartlomiej Zolnierkiewicz5f8b6c32007-10-19 00:30:07 +0200178 .mwdma_mask = ATA_MWDMA2,
179 .udma_mask = ATA_UDMA4,
Jaya Kumarf5b2d8b2005-11-09 23:58:16 +0100180};
181
182static int __devinit cs5535_init_one(struct pci_dev *dev,
183 const struct pci_device_id *id)
184{
Bartlomiej Zolnierkiewicz6cdf6eb2008-07-24 22:53:14 +0200185 return ide_pci_init_one(dev, &cs5535_chipset, NULL);
Jaya Kumarf5b2d8b2005-11-09 23:58:16 +0100186}
187
Bartlomiej Zolnierkiewicz9cbcc5e2007-10-16 22:29:56 +0200188static const struct pci_device_id cs5535_pci_tbl[] = {
189 { PCI_VDEVICE(NS, PCI_DEVICE_ID_NS_CS5535_IDE), 0 },
Bartlomiej Zolnierkiewicz10ca3022009-12-02 14:23:01 -0800190 { PCI_VDEVICE(AMD, PCI_DEVICE_ID_AMD_CS5535_IDE), },
Jaya Kumarf5b2d8b2005-11-09 23:58:16 +0100191 { 0, },
192};
193
194MODULE_DEVICE_TABLE(pci, cs5535_pci_tbl);
195
Bartlomiej Zolnierkiewicza9ab09e2008-10-13 21:39:41 +0200196static struct pci_driver cs5535_pci_driver = {
Bartlomiej Zolnierkiewiczfeb22b72008-10-10 22:39:32 +0200197 .name = "CS5535_IDE",
198 .id_table = cs5535_pci_tbl,
199 .probe = cs5535_init_one,
200 .remove = ide_pci_remove,
201 .suspend = ide_pci_suspend,
202 .resume = ide_pci_resume,
Jaya Kumarf5b2d8b2005-11-09 23:58:16 +0100203};
204
205static int __init cs5535_ide_init(void)
206{
Bartlomiej Zolnierkiewicza9ab09e2008-10-13 21:39:41 +0200207 return ide_pci_register_driver(&cs5535_pci_driver);
Jaya Kumarf5b2d8b2005-11-09 23:58:16 +0100208}
209
Bartlomiej Zolnierkiewicz40c8a7f2008-07-24 22:53:20 +0200210static void __exit cs5535_ide_exit(void)
211{
Bartlomiej Zolnierkiewicza9ab09e2008-10-13 21:39:41 +0200212 pci_unregister_driver(&cs5535_pci_driver);
Bartlomiej Zolnierkiewicz40c8a7f2008-07-24 22:53:20 +0200213}
214
Jaya Kumarf5b2d8b2005-11-09 23:58:16 +0100215module_init(cs5535_ide_init);
Bartlomiej Zolnierkiewicz40c8a7f2008-07-24 22:53:20 +0200216module_exit(cs5535_ide_exit);
Jaya Kumarf5b2d8b2005-11-09 23:58:16 +0100217
218MODULE_AUTHOR("AMD");
219MODULE_DESCRIPTION("PCI driver module for AMD/NS CS5535 IDE");
220MODULE_LICENSE("GPL");