git.oblomov.eu Git - linux-2.6/blob - 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 <linux/dmi.h>
  21 #include <linux/kallsyms.h>
  22 #include "base.h"
  23
  24 static void quirk_awe32_resources(struct pnp_dev *dev)
  25 {
  26         struct pnp_port *port, *port2, *port3;
  27         struct pnp_option *res = dev->dependent;
  28
  29         /*
  30          * Unfortunately the isapnp_add_port_resource is too tightly bound
  31          * into the PnP discovery sequence, and cannot be used. Link in the
  32          * two extra ports (at offset 0x400 and 0x800 from the one given) by
  33          * hand.
  34          */
  35         for (; res; res = res->next) {
  36                 port2 = pnp_alloc(sizeof(struct pnp_port));
  37                 if (!port2)
  38                         return;
  39                 port3 = pnp_alloc(sizeof(struct pnp_port));
  40                 if (!port3) {
  41                         kfree(port2);
  42                         return;
  43                 }
  44                 port = res->port;
  45                 memcpy(port2, port, sizeof(struct pnp_port));
  46                 memcpy(port3, port, sizeof(struct pnp_port));
  47                 port->next = port2;
  48                 port2->next = port3;
  49                 port2->min += 0x400;
  50                 port2->max += 0x400;
  51                 port3->min += 0x800;
  52                 port3->max += 0x800;
  53         }
  54         printk(KERN_INFO "pnp: AWE32 quirk - adding two ports\n");
  55 }
  56
  57 static void quirk_cmi8330_resources(struct pnp_dev *dev)
  58 {
  59         struct pnp_option *res = dev->dependent;
  60         unsigned long tmp;
  61
  62         for (; res; res = res->next) {
  63
  64                 struct pnp_irq *irq;
  65                 struct pnp_dma *dma;
  66
  67                 for (irq = res->irq; irq; irq = irq->next) {    // Valid irqs are 5, 7, 10
  68                         tmp = 0x04A0;
  69                         bitmap_copy(irq->map, &tmp, 16);        // 0000 0100 1010 0000
  70                 }
  71
  72                 for (dma = res->dma; dma; dma = dma->next)      // Valid 8bit dma channels are 1,3
  73                         if ((dma->flags & IORESOURCE_DMA_TYPE_MASK) ==
  74                             IORESOURCE_DMA_8BIT)
  75                                 dma->map = 0x000A;
  76         }
  77         printk(KERN_INFO "pnp: CMI8330 quirk - fixing interrupts and dma\n");
  78 }
  79
  80 static void quirk_sb16audio_resources(struct pnp_dev *dev)
  81 {
  82         struct pnp_port *port;
  83         struct pnp_option *res = dev->dependent;
  84         int changed = 0;
  85
  86         /*
  87          * The default range on the mpu port for these devices is 0x388-0x388.
  88          * Here we increase that range so that two such cards can be
  89          * auto-configured.
  90          */
  91
  92         for (; res; res = res->next) {
  93                 port = res->port;
  94                 if (!port)
  95                         continue;
  96                 port = port->next;
  97                 if (!port)
  98                         continue;
  99                 port = port->next;
 100                 if (!port)
 101                         continue;
 102                 if (port->min != port->max)
 103                         continue;
 104                 port->max += 0x70;
 105                 changed = 1;
 106         }
 107         if (changed)
 108                 printk(KERN_INFO
 109                        "pnp: SB audio device quirk - increasing port range\n");
 110 }
 111
 112 static void quirk_supermicro_h8dce_system(struct pnp_dev *dev)
 113 {
 114         int i;
 115         static struct dmi_system_id supermicro_h8dce[] = {
 116                 {
 117                         .ident = "Supermicro H8DCE",
 118                         .matches = {
 119                                 DMI_MATCH(DMI_SYS_VENDOR, "Supermicro"),
 120                                 DMI_MATCH(DMI_PRODUCT_NAME, "H8DCE"),
 121                         },
 122                 },
 123                 { }
 124         };
 125
 126         if (!dmi_check_system(supermicro_h8dce))
 127                 return;
 128
 129         /*
 130          * On the Supermicro H8DCE, there's a system device with resources
 131          * that overlap BAR 6 of the built-in SATA PCI adapter.  If the PNP
 132          * system device claims them, the sata_nv driver won't be able to.
 133          * More details at:
 134          *     https://bugzilla.redhat.com/show_bug.cgi?id=280641
 135          *     https://bugzilla.redhat.com/show_bug.cgi?id=313491
 136          *     http://lkml.org/lkml/2008/1/9/449
 137          *     http://thread.gmane.org/gmane.linux.acpi.devel/27312
 138          */
 139         for (i = 0; i < PNP_MAX_MEM; i++) {
 140                 if (pnp_mem_valid(dev, i) && pnp_mem_len(dev, i) &&
 141                     (pnp_mem_start(dev, i) & 0xdfef0000) == 0xdfef0000) {
 142                         dev_warn(&dev->dev, "disabling 0x%llx-0x%llx to prevent"
 143                                 " conflict with sata_nv PCI device\n",
 144                                 (unsigned long long) pnp_mem_start(dev, i),
 145                                 (unsigned long long) (pnp_mem_start(dev, i) +
 146                                         pnp_mem_len(dev, i) - 1));
 147                         pnp_mem_flags(dev, i) = 0;
 148                 }
 149         }
 150 }
 151
 152 /*
 153  *  PnP Quirks
 154  *  Cards or devices that need some tweaking due to incomplete resource info
 155  */
 156
 157 static struct pnp_fixup pnp_fixups[] = {
 158         /* Soundblaster awe io port quirk */
 159         {"CTL0021", quirk_awe32_resources},
 160         {"CTL0022", quirk_awe32_resources},
 161         {"CTL0023", quirk_awe32_resources},
 162         /* CMI 8330 interrupt and dma fix */
 163         {"@X@0001", quirk_cmi8330_resources},
 164         /* Soundblaster audio device io port range quirk */
 165         {"CTL0001", quirk_sb16audio_resources},
 166         {"CTL0031", quirk_sb16audio_resources},
 167         {"CTL0041", quirk_sb16audio_resources},
 168         {"CTL0042", quirk_sb16audio_resources},
 169         {"CTL0043", quirk_sb16audio_resources},
 170         {"CTL0044", quirk_sb16audio_resources},
 171         {"CTL0045", quirk_sb16audio_resources},
 172         {"PNP0c01", quirk_supermicro_h8dce_system},
 173         {"PNP0c02", quirk_supermicro_h8dce_system},
 174         {""}
 175 };
 176
 177 void pnp_fixup_device(struct pnp_dev *dev)
 178 {
 179         int i = 0;
 180         void (*quirk)(struct pnp_dev *);
 181
 182         while (*pnp_fixups[i].id) {
 183                 if (compare_pnp_id(dev->id, pnp_fixups[i].id)) {
 184                         quirk = pnp_fixups[i].quirk_function;
 185
 186 #ifdef DEBUG
 187                         dev_dbg(&dev->dev, "calling quirk 0x%p", quirk);
 188                         print_fn_descriptor_symbol(": %s()\n",
 189                                 (unsigned long) *quirk);
 190 #endif
 191                         (*quirk)(dev);
 192                 }
 193                 i++;
 194         }
 195 }