summaryrefslogtreecommitdiffstats
path: root/drivers/pnp/quirks.c
blob: 8e7d7738f296d66161c2d655b95869e8612fa60f (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
/*
 *  This file contains quirk handling code for PnP devices
 *  Some devices do not report all their resources, and need to have extra
 *  resources added. This is most easily accomplished at initialisation time
 *  when building up the resource structure for the first time.
 *
 *  Copyright (c) 2000 Peter Denison <peterd@pnd-pc.demon.co.uk>
 *
 *  Heavily based on PCI quirks handling which is
 *
 *  Copyright (c) 1999 Martin Mares <mj@ucw.cz>
 */

#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/string.h>
#include <linux/slab.h>
#include <linux/pnp.h>
#include <linux/io.h>
#include "base.h"

static void quirk_awe32_resources(struct pnp_dev *dev)
{
	struct pnp_port *port, *port2, *port3;
	struct pnp_option *res = dev->dependent;

	/*
	 * Unfortunately the isapnp_add_port_resource is too tightly bound
	 * into the PnP discovery sequence, and cannot be used. Link in the
	 * two extra ports (at offset 0x400 and 0x800 from the one given) by
	 * hand.
	 */
	for (; res; res = res->next) {
		port2 = pnp_alloc(sizeof(struct pnp_port));
		if (!port2)
			return;
		port3 = pnp_alloc(sizeof(struct pnp_port));
		if (!port3) {
			kfree(port2);
			return;
		}
		port = res->port;
		memcpy(port2, port, sizeof(struct pnp_port));
		memcpy(port3, port, sizeof(struct pnp_port));
		port->next = port2;
		port2->next = port3;
		port2->min += 0x400;
		port2->max += 0x400;
		port3->min += 0x800;
		port3->max += 0x800;
	}
	printk(KERN_INFO "pnp: AWE32 quirk - adding two ports\n");
}

static void quirk_cmi8330_resources(struct pnp_dev *dev)
{
	struct pnp_option *res = dev->dependent;
	unsigned long tmp;

	for (; res; res = res->next) {

		struct pnp_irq *irq;
		struct pnp_dma *dma;

		for (irq = res->irq; irq; irq = irq->next) {	// Valid irqs are 5, 7, 10
			tmp = 0x04A0;
			bitmap_copy(irq->map, &tmp, 16);	// 0000 0100 1010 0000
		}

		for (dma = res->dma; dma; dma = dma->next)	// Valid 8bit dma channels are 1,3
			if ((dma->flags & IORESOURCE_DMA_TYPE_MASK) ==
			    IORESOURCE_DMA_8BIT)
				dma->map = 0x000A;
	}
	printk(KERN_INFO "pnp: CMI8330 quirk - fixing interrupts and dma\n");
}

static void quirk_sb16audio_resources(struct pnp_dev *dev)
{
	struct pnp_port *port;
	struct pnp_option *res = dev->dependent;
	int changed = 0;

	/*
	 * The default range on the mpu port for these devices is 0x388-0x388.
	 * Here we increase that range so that two such cards can be
	 * auto-configured.
	 */

	for (; res; res = res->next) {
		port = res->port;
		if (!port)
			continue;
		port = port->next;
		if (!port)
			continue;
		port = port->next;
		if (!port)
			continue;
		if (port->min != port->max)
			continue;
		port->max += 0x70;
		changed = 1;
	}
	if (changed)
		printk(KERN_INFO
		       "pnp: SB audio device quirk - increasing port range\n");
	return;
}

static int quirk_smc_fir_enabled(struct pnp_dev *dev)
{
	unsigned long firbase;
	u8 bank, high, low, chip;

	if (!pnp_port_valid(dev, 1))
		return 0;

	firbase = pnp_port_start(dev, 1);

	/* Select register bank 3 */
	bank = inb(firbase + 7);
	bank &= 0xf0;
	bank |= 3;
	outb(bank, firbase + 7);

	high = inb(firbase + 0);
	low = inb(firbase + 1);
	chip = inb(firbase + 2);

	/* This corresponds to the check in smsc_ircc_present() */
	if (high == 0x10 && low == 0xb8 && (chip == 0xf1 || chip == 0xf2))
		return 1;

	return 0;
}

static void quirk_smc_enable(struct pnp_dev *dev)
{
	struct resource fir, sir, irq;

	pnp_activate_dev(dev);
	if (quirk_smc_fir_enabled(dev))
		return;

	/*
	 * Sometimes the BIOS claims the device is enabled, but it reports
	 * the wrong FIR resources or doesn't properly configure ISA or LPC
	 * bridges on the way to the device.
	 *
	 * HP nc6000 and nc8000/nw8000 laptops have known problems like
	 * this.  Fortunately, they do fix things up if we auto-configure
	 * the device using its _PRS and _SRS methods.
	 */
	dev_err(&dev->dev, "%s not responding at SIR 0x%lx, FIR 0x%lx; "
		"auto-configuring\n", dev->id->id,
		(unsigned long)pnp_port_start(dev, 0),
		(unsigned long)pnp_port_start(dev, 1));

	pnp_disable_dev(dev);
	pnp_init_resource_table(&dev->res);
	pnp_auto_config_dev(dev);
	pnp_activate_dev(dev);
	if (quirk_smc_fir_enabled(dev)) {
		dev_err(&dev->dev, "responds at SIR 0x%lx, FIR 0x%lx\n",
			(unsigned long)pnp_port_start(dev, 0),
			(unsigned long)pnp_port_start(dev, 1));
		return;
	}

	/*
	 * The Toshiba Portege 4000 _CRS reports the FIR region first,
	 * followed by the SIR region.  The BIOS will configure the bridge,
	 * but only if we call _SRS with SIR first, then FIR.  It also
	 * reports the IRQ as active high, when it is really active low.
	 */
	dev_err(&dev->dev, "not responding at SIR 0x%lx, FIR 0x%lx; "
		"swapping SIR/FIR and reconfiguring\n",
		(unsigned long)pnp_port_start(dev, 0),
		(unsigned long)pnp_port_start(dev, 1));

	/*
	 * Clear IORESOURCE_AUTO so pnp_activate_dev() doesn't reassign
	 * these resources any more.
	 */
	fir = dev->res.port_resource[0];
	sir = dev->res.port_resource[1];
	fir.flags &= ~IORESOURCE_AUTO;
	sir.flags &= ~IORESOURCE_AUTO;

	irq = dev->res.irq_resource[0];
	irq.flags &= ~IORESOURCE_AUTO;
	irq.flags &= ~IORESOURCE_BITS;
	irq.flags |= IORESOURCE_IRQ_LOWEDGE;

	pnp_disable_dev(dev);
	dev->res.port_resource[0] = sir;
	dev->res.port_resource[1] = fir;
	dev->res.irq_resource[0] = irq;
	pnp_activate_dev(dev);

	if (quirk_smc_fir_enabled(dev)) {
		dev_err(&dev->dev, "responds at SIR 0x%lx, FIR 0x%lx\n",
			(unsigned long)pnp_port_start(dev, 0),
			(unsigned long)pnp_port_start(dev, 1));
		return;
	}

	dev_err(&dev->dev, "giving up; try \"smsc-ircc2.nopnp\" and "
		"email bjorn.helgaas@hp.com\n");
}

/*
 *  PnP Quirks
 *  Cards or devices that need some tweaking due to incomplete resource info
 */

static struct pnp_fixup pnp_fixups[] = {
	/* Soundblaster awe io port quirk */
	{"CTL0021", quirk_awe32_resources},
	{"CTL0022", quirk_awe32_resources},
	{"CTL0023", quirk_awe32_resources},
	/* CMI 8330 interrupt and dma fix */
	{"@X@0001", quirk_cmi8330_resources},
	/* Soundblaster audio device io port range quirk */
	{"CTL0001", quirk_sb16audio_resources},
	{"CTL0031", quirk_sb16audio_resources},
	{"CTL0041", quirk_sb16audio_resources},
	{"CTL0042", quirk_sb16audio_resources},
	{"CTL0043", quirk_sb16audio_resources},
	{"CTL0044", quirk_sb16audio_resources},
	{"CTL0045", quirk_sb16audio_resources},
	{"SMCf010", quirk_smc_enable},
	{""}
};

void pnp_fixup_device(struct pnp_dev *dev)
{
	int i = 0;

	while (*pnp_fixups[i].id) {
		if (compare_pnp_id(dev->id, pnp_fixups[i].id)) {
			pnp_dbg("Calling quirk for %s", dev->dev.bus_id);
			pnp_fixups[i].quirk_function(dev);
		}
		i++;
	}
}
OpenPOWER on IntegriCloud