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");
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)
139 struct resource fir, sir, irq;
141 pnp_activate_dev(dev);
142 if (quirk_smc_fir_enabled(dev))
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.
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.
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));
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));
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.
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));
182 * Clear IORESOURCE_AUTO so pnp_activate_dev() doesn't reassign
183 * these resources any more.
185 fir = dev->res.port_resource[0];
186 sir = dev->res.port_resource[1];
187 fir.flags &= ~IORESOURCE_AUTO;
188 sir.flags &= ~IORESOURCE_AUTO;
190 irq = dev->res.irq_resource[0];
191 irq.flags &= ~IORESOURCE_AUTO;
192 irq.flags &= ~IORESOURCE_BITS;
193 irq.flags |= IORESOURCE_IRQ_LOWEDGE;
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);
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));
208 dev_err(&dev->dev, "giving up; try \"smsc-ircc2.nopnp\" and "
209 "email bjorn.helgaas@hp.com\n");
214 * Cards or devices that need some tweaking due to incomplete resource info
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},
236 void pnp_fixup_device(struct pnp_dev *dev)
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);