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>
23 static void quirk_awe32_resources(struct pnp_dev
*dev
)
25 struct pnp_port
*port
, *port2
, *port3
;
26 struct pnp_option
*res
= dev
->dependent
;
29 * Unfortunately the isapnp_add_port_resource is too tightly bound
30 * into the PnP discovery sequence, and cannot be used. Link in the
31 * two extra ports (at offset 0x400 and 0x800 from the one given) by
34 for ( ; res
; res
= res
->next
) {
35 port2
= pnp_alloc(sizeof(struct pnp_port
));
38 port3
= pnp_alloc(sizeof(struct pnp_port
));
44 memcpy(port2
, port
, sizeof(struct pnp_port
));
45 memcpy(port3
, port
, sizeof(struct pnp_port
));
53 printk(KERN_INFO
"pnp: AWE32 quirk - adding two ports\n");
56 static void quirk_cmi8330_resources(struct pnp_dev
*dev
)
58 struct pnp_option
*res
= dev
->dependent
;
61 for ( ; res
; res
= res
->next
) {
66 for( irq
= res
->irq
; irq
; irq
= irq
->next
) { // Valid irqs are 5, 7, 10
68 bitmap_copy(irq
->map
, &tmp
, 16); // 0000 0100 1010 0000
71 for( dma
= res
->dma
; dma
; dma
= dma
->next
) // Valid 8bit dma channels are 1,3
72 if( ( dma
->flags
& IORESOURCE_DMA_TYPE_MASK
) == IORESOURCE_DMA_8BIT
)
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
)
106 printk(KERN_INFO
"pnp: SB audio device quirk - increasing port range\n");
110 static int quirk_smc_fir_enabled(struct pnp_dev
*dev
)
112 unsigned long firbase
;
113 u8 bank
, high
, low
, chip
;
115 if (!pnp_port_valid(dev
, 1))
118 firbase
= pnp_port_start(dev
, 1);
120 /* Select register bank 3 */
121 bank
= inb(firbase
+ 7);
124 outb(bank
, firbase
+ 7);
126 high
= inb(firbase
+ 0);
127 low
= inb(firbase
+ 1);
128 chip
= inb(firbase
+ 2);
130 /* This corresponds to the check in smsc_ircc_present() */
131 if (high
== 0x10 && low
== 0xb8 && (chip
== 0xf1 || chip
== 0xf2))
137 static void quirk_smc_enable(struct pnp_dev
*dev
)
140 * If the BIOS left the device disabled, or it is enabled and
141 * responding correctly, we're in good shape.
143 if (!dev
->active
|| 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 device not responding, auto-configuring "
156 "resources\n", dev
->id
->id
);
158 pnp_disable_dev(dev
);
159 pnp_init_resource_table(&dev
->res
);
160 pnp_auto_config_dev(dev
);
161 pnp_activate_dev(dev
);
163 if (!quirk_smc_fir_enabled(dev
))
164 dev_err(&dev
->dev
, "giving up; try \"smsc-ircc2.nopnp\"\n");
170 * Cards or devices that need some tweaking due to incomplete resource info
173 static struct pnp_fixup pnp_fixups
[] = {
174 /* Soundblaster awe io port quirk */
175 { "CTL0021", quirk_awe32_resources
},
176 { "CTL0022", quirk_awe32_resources
},
177 { "CTL0023", quirk_awe32_resources
},
178 /* CMI 8330 interrupt and dma fix */
179 { "@X@0001", quirk_cmi8330_resources
},
180 /* Soundblaster audio device io port range quirk */
181 { "CTL0001", quirk_sb16audio_resources
},
182 { "CTL0031", quirk_sb16audio_resources
},
183 { "CTL0041", quirk_sb16audio_resources
},
184 { "CTL0042", quirk_sb16audio_resources
},
185 { "CTL0043", quirk_sb16audio_resources
},
186 { "CTL0044", quirk_sb16audio_resources
},
187 { "CTL0045", quirk_sb16audio_resources
},
188 { "SMCf010", quirk_smc_enable
},
192 void pnp_fixup_device(struct pnp_dev
*dev
)
196 while (*pnp_fixups
[i
].id
) {
197 if (compare_pnp_id(dev
->id
,pnp_fixups
[i
].id
)) {
198 pnp_dbg("Calling quirk for %s",
200 pnp_fixups
[i
].quirk_function(dev
);