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.
7 * Copyright (c) 2000 Peter Denison <peterd@pnd-pc.demon.co.uk>
9 * Heavily based on PCI quirks handling which is
11 * Copyright (c) 1999 Martin Mares <mj@ucw.cz>
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>
22 static void quirk_awe32_resources(struct pnp_dev
*dev
)
24 struct pnp_port
*port
, *port2
, *port3
;
25 struct pnp_option
*res
= dev
->dependent
;
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
33 for (; res
; res
= res
->next
) {
34 port2
= pnp_alloc(sizeof(struct pnp_port
));
37 port3
= pnp_alloc(sizeof(struct pnp_port
));
43 memcpy(port2
, port
, sizeof(struct pnp_port
));
44 memcpy(port3
, port
, sizeof(struct pnp_port
));
52 printk(KERN_INFO
"pnp: AWE32 quirk - adding two ports\n");
55 static void quirk_cmi8330_resources(struct pnp_dev
*dev
)
57 struct pnp_option
*res
= dev
->dependent
;
60 for (; res
; res
= res
->next
) {
65 for (irq
= res
->irq
; irq
; irq
= irq
->next
) { // Valid irqs are 5, 7, 10
67 bitmap_copy(irq
->map
, &tmp
, 16); // 0000 0100 1010 0000
70 for (dma
= res
->dma
; dma
; dma
= dma
->next
) // Valid 8bit dma channels are 1,3
71 if ((dma
->flags
& IORESOURCE_DMA_TYPE_MASK
) ==
75 printk(KERN_INFO
"pnp: CMI8330 quirk - fixing interrupts and dma\n");
78 static void quirk_sb16audio_resources(struct pnp_dev
*dev
)
80 struct pnp_port
*port
;
81 struct pnp_option
*res
= dev
->dependent
;
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
90 for (; res
; res
= res
->next
) {
100 if (port
->min
!= port
->max
)
107 "pnp: SB audio device quirk - increasing port range\n");
111 static int quirk_smc_fir_enabled(struct pnp_dev
*dev
)
113 unsigned long firbase
;
114 u8 bank
, high
, low
, chip
;
116 if (!pnp_port_valid(dev
, 1))
119 firbase
= pnp_port_start(dev
, 1);
121 /* Select register bank 3 */
122 bank
= inb(firbase
+ 7);
125 outb(bank
, firbase
+ 7);
127 high
= inb(firbase
+ 0);
128 low
= inb(firbase
+ 1);
129 chip
= inb(firbase
+ 2);
131 /* This corresponds to the check in smsc_ircc_present() */
132 if (high
== 0x10 && low
== 0xb8 && (chip
== 0xf1 || chip
== 0xf2))
138 static void quirk_smc_enable(struct pnp_dev
*dev
)
140 struct resource fir
, sir
, irq
;
142 pnp_activate_dev(dev
);
143 if (quirk_smc_fir_enabled(dev
))
147 * Sometimes the BIOS claims the device is enabled, but it reports
148 * the wrong FIR resources or doesn't properly configure ISA or LPC
149 * bridges on the way to the device.
151 * HP nc6000 and nc8000/nw8000 laptops have known problems like
152 * this. Fortunately, they do fix things up if we auto-configure
153 * the device using its _PRS and _SRS methods.
155 dev_err(&dev
->dev
, "%s not responding at SIR 0x%lx, FIR 0x%lx; "
156 "auto-configuring\n", dev
->id
->id
,
157 (unsigned long)pnp_port_start(dev
, 0),
158 (unsigned long)pnp_port_start(dev
, 1));
160 pnp_disable_dev(dev
);
161 pnp_init_resource_table(&dev
->res
);
162 pnp_auto_config_dev(dev
);
163 pnp_activate_dev(dev
);
164 if (quirk_smc_fir_enabled(dev
)) {
165 dev_err(&dev
->dev
, "responds at SIR 0x%lx, FIR 0x%lx\n",
166 (unsigned long)pnp_port_start(dev
, 0),
167 (unsigned long)pnp_port_start(dev
, 1));
172 * The Toshiba Portege 4000 _CRS reports the FIR region first,
173 * followed by the SIR region. The BIOS will configure the bridge,
174 * but only if we call _SRS with SIR first, then FIR. It also
175 * reports the IRQ as active high, when it is really active low.
177 dev_err(&dev
->dev
, "not responding at SIR 0x%lx, FIR 0x%lx; "
178 "swapping SIR/FIR and reconfiguring\n",
179 (unsigned long)pnp_port_start(dev
, 0),
180 (unsigned long)pnp_port_start(dev
, 1));
183 * Clear IORESOURCE_AUTO so pnp_activate_dev() doesn't reassign
184 * these resources any more.
186 fir
= dev
->res
.port_resource
[0];
187 sir
= dev
->res
.port_resource
[1];
188 fir
.flags
&= ~IORESOURCE_AUTO
;
189 sir
.flags
&= ~IORESOURCE_AUTO
;
191 irq
= dev
->res
.irq_resource
[0];
192 irq
.flags
&= ~IORESOURCE_AUTO
;
193 irq
.flags
&= ~IORESOURCE_BITS
;
194 irq
.flags
|= IORESOURCE_IRQ_LOWEDGE
;
196 pnp_disable_dev(dev
);
197 dev
->res
.port_resource
[0] = sir
;
198 dev
->res
.port_resource
[1] = fir
;
199 dev
->res
.irq_resource
[0] = irq
;
200 pnp_activate_dev(dev
);
202 if (quirk_smc_fir_enabled(dev
)) {
203 dev_err(&dev
->dev
, "responds at SIR 0x%lx, FIR 0x%lx\n",
204 (unsigned long)pnp_port_start(dev
, 0),
205 (unsigned long)pnp_port_start(dev
, 1));
209 dev_err(&dev
->dev
, "giving up; try \"smsc-ircc2.nopnp\" and "
210 "email bjorn.helgaas@hp.com\n");
215 * Cards or devices that need some tweaking due to incomplete resource info
218 static struct pnp_fixup pnp_fixups
[] = {
219 /* Soundblaster awe io port quirk */
220 {"CTL0021", quirk_awe32_resources
},
221 {"CTL0022", quirk_awe32_resources
},
222 {"CTL0023", quirk_awe32_resources
},
223 /* CMI 8330 interrupt and dma fix */
224 {"@X@0001", quirk_cmi8330_resources
},
225 /* Soundblaster audio device io port range quirk */
226 {"CTL0001", quirk_sb16audio_resources
},
227 {"CTL0031", quirk_sb16audio_resources
},
228 {"CTL0041", quirk_sb16audio_resources
},
229 {"CTL0042", quirk_sb16audio_resources
},
230 {"CTL0043", quirk_sb16audio_resources
},
231 {"CTL0044", quirk_sb16audio_resources
},
232 {"CTL0045", quirk_sb16audio_resources
},
233 {"SMCf010", quirk_smc_enable
},
237 void pnp_fixup_device(struct pnp_dev
*dev
)
241 while (*pnp_fixups
[i
].id
) {
242 if (compare_pnp_id(dev
->id
, pnp_fixups
[i
].id
)) {
243 pnp_dbg("Calling quirk for %s", dev
->dev
.bus_id
);
244 pnp_fixups
[i
].quirk_function(dev
);