Merge branch 'for-linus' of master.kernel.org:/pub/scm/linux/kernel/git/cooloney...
[linux-2.6] / drivers / pnp / quirks.c
1 /*
2  *  This file contains quirk handling code for PnP devices
3  *  Some devices do not report all their resources, and need to have extra
4  *  resources added. This is most easily accomplished at initialisation time
5  *  when building up the resource structure for the first time.
6  *
7  *  Copyright (c) 2000 Peter Denison <peterd@pnd-pc.demon.co.uk>
8  *
9  *  Heavily based on PCI quirks handling which is
10  *
11  *  Copyright (c) 1999 Martin Mares <mj@ucw.cz>
12  */
13
14 #include <linux/types.h>
15 #include <linux/kernel.h>
16 #include <linux/string.h>
17 #include <linux/slab.h>
18 #include <linux/pnp.h>
19 #include <linux/io.h>
20 #include "base.h"
21
22 static void quirk_awe32_resources(struct pnp_dev *dev)
23 {
24         struct pnp_port *port, *port2, *port3;
25         struct pnp_option *res = dev->dependent;
26
27         /*
28          * Unfortunately the isapnp_add_port_resource is too tightly bound
29          * into the PnP discovery sequence, and cannot be used. Link in the
30          * two extra ports (at offset 0x400 and 0x800 from the one given) by
31          * hand.
32          */
33         for (; res; res = res->next) {
34                 port2 = pnp_alloc(sizeof(struct pnp_port));
35                 if (!port2)
36                         return;
37                 port3 = pnp_alloc(sizeof(struct pnp_port));
38                 if (!port3) {
39                         kfree(port2);
40                         return;
41                 }
42                 port = res->port;
43                 memcpy(port2, port, sizeof(struct pnp_port));
44                 memcpy(port3, port, sizeof(struct pnp_port));
45                 port->next = port2;
46                 port2->next = port3;
47                 port2->min += 0x400;
48                 port2->max += 0x400;
49                 port3->min += 0x800;
50                 port3->max += 0x800;
51         }
52         printk(KERN_INFO "pnp: AWE32 quirk - adding two ports\n");
53 }
54
55 static void quirk_cmi8330_resources(struct pnp_dev *dev)
56 {
57         struct pnp_option *res = dev->dependent;
58         unsigned long tmp;
59
60         for (; res; res = res->next) {
61
62                 struct pnp_irq *irq;
63                 struct pnp_dma *dma;
64
65                 for (irq = res->irq; irq; irq = irq->next) {    // Valid irqs are 5, 7, 10
66                         tmp = 0x04A0;
67                         bitmap_copy(irq->map, &tmp, 16);        // 0000 0100 1010 0000
68                 }
69
70                 for (dma = res->dma; dma; dma = dma->next)      // Valid 8bit dma channels are 1,3
71                         if ((dma->flags & IORESOURCE_DMA_TYPE_MASK) ==
72                             IORESOURCE_DMA_8BIT)
73                                 dma->map = 0x000A;
74         }
75         printk(KERN_INFO "pnp: CMI8330 quirk - fixing interrupts and dma\n");
76 }
77
78 static void quirk_sb16audio_resources(struct pnp_dev *dev)
79 {
80         struct pnp_port *port;
81         struct pnp_option *res = dev->dependent;
82         int changed = 0;
83
84         /*
85          * The default range on the mpu port for these devices is 0x388-0x388.
86          * Here we increase that range so that two such cards can be
87          * auto-configured.
88          */
89
90         for (; res; res = res->next) {
91                 port = res->port;
92                 if (!port)
93                         continue;
94                 port = port->next;
95                 if (!port)
96                         continue;
97                 port = port->next;
98                 if (!port)
99                         continue;
100                 if (port->min != port->max)
101                         continue;
102                 port->max += 0x70;
103                 changed = 1;
104         }
105         if (changed)
106                 printk(KERN_INFO
107                        "pnp: SB audio device quirk - increasing port range\n");
108 }
109
110 static int quirk_smc_fir_enabled(struct pnp_dev *dev)
111 {
112         unsigned long firbase;
113         u8 bank, high, low, chip;
114
115         if (!pnp_port_valid(dev, 1))
116                 return 0;
117
118         firbase = pnp_port_start(dev, 1);
119
120         /* Select register bank 3 */
121         bank = inb(firbase + 7);
122         bank &= 0xf0;
123         bank |= 3;
124         outb(bank, firbase + 7);
125
126         high = inb(firbase + 0);
127         low = inb(firbase + 1);
128         chip = inb(firbase + 2);
129
130         /* This corresponds to the check in smsc_ircc_present() */
131         if (high == 0x10 && low == 0xb8 && (chip == 0xf1 || chip == 0xf2))
132                 return 1;
133
134         return 0;
135 }
136
137 static void quirk_smc_enable(struct pnp_dev *dev)
138 {
139         struct resource fir, sir, irq;
140
141         pnp_activate_dev(dev);
142         if (quirk_smc_fir_enabled(dev))
143                 return;
144
145         /*
146          * Sometimes the BIOS claims the device is enabled, but it reports
147          * the wrong FIR resources or doesn't properly configure ISA or LPC
148          * bridges on the way to the device.
149          *
150          * HP nc6000 and nc8000/nw8000 laptops have known problems like
151          * this.  Fortunately, they do fix things up if we auto-configure
152          * the device using its _PRS and _SRS methods.
153          */
154         dev_err(&dev->dev, "%s not responding at SIR 0x%lx, FIR 0x%lx; "
155                 "auto-configuring\n", dev->id->id,
156                 (unsigned long)pnp_port_start(dev, 0),
157                 (unsigned long)pnp_port_start(dev, 1));
158
159         pnp_disable_dev(dev);
160         pnp_init_resource_table(&dev->res);
161         pnp_auto_config_dev(dev);
162         pnp_activate_dev(dev);
163         if (quirk_smc_fir_enabled(dev)) {
164                 dev_err(&dev->dev, "responds at SIR 0x%lx, FIR 0x%lx\n",
165                         (unsigned long)pnp_port_start(dev, 0),
166                         (unsigned long)pnp_port_start(dev, 1));
167                 return;
168         }
169
170         /*
171          * The Toshiba Portege 4000 _CRS reports the FIR region first,
172          * followed by the SIR region.  The BIOS will configure the bridge,
173          * but only if we call _SRS with SIR first, then FIR.  It also
174          * reports the IRQ as active high, when it is really active low.
175          */
176         dev_err(&dev->dev, "not responding at SIR 0x%lx, FIR 0x%lx; "
177                 "swapping SIR/FIR and reconfiguring\n",
178                 (unsigned long)pnp_port_start(dev, 0),
179                 (unsigned long)pnp_port_start(dev, 1));
180
181         /*
182          * Clear IORESOURCE_AUTO so pnp_activate_dev() doesn't reassign
183          * these resources any more.
184          */
185         fir = dev->res.port_resource[0];
186         sir = dev->res.port_resource[1];
187         fir.flags &= ~IORESOURCE_AUTO;
188         sir.flags &= ~IORESOURCE_AUTO;
189
190         irq = dev->res.irq_resource[0];
191         irq.flags &= ~IORESOURCE_AUTO;
192         irq.flags &= ~IORESOURCE_BITS;
193         irq.flags |= IORESOURCE_IRQ_LOWEDGE;
194
195         pnp_disable_dev(dev);
196         dev->res.port_resource[0] = sir;
197         dev->res.port_resource[1] = fir;
198         dev->res.irq_resource[0] = irq;
199         pnp_activate_dev(dev);
200
201         if (quirk_smc_fir_enabled(dev)) {
202                 dev_err(&dev->dev, "responds at SIR 0x%lx, FIR 0x%lx\n",
203                         (unsigned long)pnp_port_start(dev, 0),
204                         (unsigned long)pnp_port_start(dev, 1));
205                 return;
206         }
207
208         dev_err(&dev->dev, "giving up; try \"smsc-ircc2.nopnp\" and "
209                 "email bjorn.helgaas@hp.com\n");
210 }
211
212 /*
213  *  PnP Quirks
214  *  Cards or devices that need some tweaking due to incomplete resource info
215  */
216
217 static struct pnp_fixup pnp_fixups[] = {
218         /* Soundblaster awe io port quirk */
219         {"CTL0021", quirk_awe32_resources},
220         {"CTL0022", quirk_awe32_resources},
221         {"CTL0023", quirk_awe32_resources},
222         /* CMI 8330 interrupt and dma fix */
223         {"@X@0001", quirk_cmi8330_resources},
224         /* Soundblaster audio device io port range quirk */
225         {"CTL0001", quirk_sb16audio_resources},
226         {"CTL0031", quirk_sb16audio_resources},
227         {"CTL0041", quirk_sb16audio_resources},
228         {"CTL0042", quirk_sb16audio_resources},
229         {"CTL0043", quirk_sb16audio_resources},
230         {"CTL0044", quirk_sb16audio_resources},
231         {"CTL0045", quirk_sb16audio_resources},
232         {"SMCf010", quirk_smc_enable},
233         {""}
234 };
235
236 void pnp_fixup_device(struct pnp_dev *dev)
237 {
238         int i = 0;
239
240         while (*pnp_fixups[i].id) {
241                 if (compare_pnp_id(dev->id, pnp_fixups[i].id)) {
242                         pnp_dbg("Calling quirk for %s", dev->dev.bus_id);
243                         pnp_fixups[i].quirk_function(dev);
244                 }
245                 i++;
246         }
247 }