drivers/ssb/embedded.c

   1 /*
   2  * Sonics Silicon Backplane
   3  * Embedded systems support code
   4  *
   5  * Copyright 2005-2008, Broadcom Corporation
   6  * Copyright 2006-2008, Michael Buesch <m@bues.ch>
   7  *
   8  * Licensed under the GNU/GPL. See COPYING for details.
   9  */
  10
  11 #include <linux/ssb/ssb.h>
  12 #include <linux/ssb/ssb_embedded.h>
  13 #include <linux/ssb/ssb_driver_pci.h>
  14 #include <linux/ssb/ssb_driver_gige.h>
  15 #include <linux/pci.h>
  16
  17 #include "ssb_private.h"
  18
  19
  20 int ssb_watchdog_timer_set(struct ssb_bus *bus, u32 ticks)
  21 {
  22         if (ssb_chipco_available(&bus->chipco)) {
  23                 ssb_chipco_watchdog_timer_set(&bus->chipco, ticks);
  24                 return 0;
  25         }
  26         if (ssb_extif_available(&bus->extif)) {
  27                 ssb_extif_watchdog_timer_set(&bus->extif, ticks);
  28                 return 0;
  29         }
  30         return -ENODEV;
  31 }
  32 EXPORT_SYMBOL(ssb_watchdog_timer_set);
  33
  34 u32 ssb_gpio_in(struct ssb_bus *bus, u32 mask)
  35 {
  36         unsigned long flags;
  37         u32 res = 0;
  38
  39         spin_lock_irqsave(&bus->gpio_lock, flags);
  40         if (ssb_chipco_available(&bus->chipco))
  41                 res = ssb_chipco_gpio_in(&bus->chipco, mask);
  42         else if (ssb_extif_available(&bus->extif))
  43                 res = ssb_extif_gpio_in(&bus->extif, mask);
  44         else
  45                 SSB_WARN_ON(1);
  46         spin_unlock_irqrestore(&bus->gpio_lock, flags);
  47
  48         return res;
  49 }
  50 EXPORT_SYMBOL(ssb_gpio_in);
  51
  52 u32 ssb_gpio_out(struct ssb_bus *bus, u32 mask, u32 value)
  53 {
  54         unsigned long flags;
  55         u32 res = 0;
  56
  57         spin_lock_irqsave(&bus->gpio_lock, flags);
  58         if (ssb_chipco_available(&bus->chipco))
  59                 res = ssb_chipco_gpio_out(&bus->chipco, mask, value);
  60         else if (ssb_extif_available(&bus->extif))
  61                 res = ssb_extif_gpio_out(&bus->extif, mask, value);
  62         else
  63                 SSB_WARN_ON(1);
  64         spin_unlock_irqrestore(&bus->gpio_lock, flags);
  65
  66         return res;
  67 }
  68 EXPORT_SYMBOL(ssb_gpio_out);
  69
  70 u32 ssb_gpio_outen(struct ssb_bus *bus, u32 mask, u32 value)
  71 {
  72         unsigned long flags;
  73         u32 res = 0;
  74
  75         spin_lock_irqsave(&bus->gpio_lock, flags);
  76         if (ssb_chipco_available(&bus->chipco))
  77                 res = ssb_chipco_gpio_outen(&bus->chipco, mask, value);
  78         else if (ssb_extif_available(&bus->extif))
  79                 res = ssb_extif_gpio_outen(&bus->extif, mask, value);
  80         else
  81                 SSB_WARN_ON(1);
  82         spin_unlock_irqrestore(&bus->gpio_lock, flags);
  83
  84         return res;
  85 }
  86 EXPORT_SYMBOL(ssb_gpio_outen);
  87
  88 u32 ssb_gpio_control(struct ssb_bus *bus, u32 mask, u32 value)
  89 {
  90         unsigned long flags;
  91         u32 res = 0;
  92
  93         spin_lock_irqsave(&bus->gpio_lock, flags);
  94         if (ssb_chipco_available(&bus->chipco))
  95                 res = ssb_chipco_gpio_control(&bus->chipco, mask, value);
  96         spin_unlock_irqrestore(&bus->gpio_lock, flags);
  97
  98         return res;
  99 }
 100 EXPORT_SYMBOL(ssb_gpio_control);
 101
 102 u32 ssb_gpio_intmask(struct ssb_bus *bus, u32 mask, u32 value)
 103 {
 104         unsigned long flags;
 105         u32 res = 0;
 106
 107         spin_lock_irqsave(&bus->gpio_lock, flags);
 108         if (ssb_chipco_available(&bus->chipco))
 109                 res = ssb_chipco_gpio_intmask(&bus->chipco, mask, value);
 110         else if (ssb_extif_available(&bus->extif))
 111                 res = ssb_extif_gpio_intmask(&bus->extif, mask, value);
 112         else
 113                 SSB_WARN_ON(1);
 114         spin_unlock_irqrestore(&bus->gpio_lock, flags);
 115
 116         return res;
 117 }
 118 EXPORT_SYMBOL(ssb_gpio_intmask);
 119
 120 u32 ssb_gpio_polarity(struct ssb_bus *bus, u32 mask, u32 value)
 121 {
 122         unsigned long flags;
 123         u32 res = 0;
 124
 125         spin_lock_irqsave(&bus->gpio_lock, flags);
 126         if (ssb_chipco_available(&bus->chipco))
 127                 res = ssb_chipco_gpio_polarity(&bus->chipco, mask, value);
 128         else if (ssb_extif_available(&bus->extif))
 129                 res = ssb_extif_gpio_polarity(&bus->extif, mask, value);
 130         else
 131                 SSB_WARN_ON(1);
 132         spin_unlock_irqrestore(&bus->gpio_lock, flags);
 133
 134         return res;
 135 }
 136 EXPORT_SYMBOL(ssb_gpio_polarity);
 137
 138 #ifdef CONFIG_SSB_DRIVER_GIGE
 139 static int gige_pci_init_callback(struct ssb_bus *bus, unsigned long data)
 140 {
 141         struct pci_dev *pdev = (struct pci_dev *)data;
 142         struct ssb_device *dev;
 143         unsigned int i;
 144         int res;
 145
 146         for (i = 0; i < bus->nr_devices; i++) {
 147                 dev = &(bus->devices[i]);
 148                 if (dev->id.coreid != SSB_DEV_ETHERNET_GBIT)
 149                         continue;
 150                 if (!dev->dev ||
 151                     !dev->dev->driver ||
 152                     !device_is_registered(dev->dev))
 153                         continue;
 154                 res = ssb_gige_pcibios_plat_dev_init(dev, pdev);
 155                 if (res >= 0)
 156                         return res;
 157         }
 158
 159         return -ENODEV;
 160 }
 161 #endif /* CONFIG_SSB_DRIVER_GIGE */
 162
 163 int ssb_pcibios_plat_dev_init(struct pci_dev *dev)
 164 {
 165         int err;
 166
 167         err = ssb_pcicore_plat_dev_init(dev);
 168         if (!err)
 169                 return 0;
 170 #ifdef CONFIG_SSB_DRIVER_GIGE
 171         err = ssb_for_each_bus_call((unsigned long)dev, gige_pci_init_callback);
 172         if (err >= 0)
 173                 return err;
 174 #endif
 175         /* This is not a PCI device on any SSB device. */
 176
 177         return -ENODEV;
 178 }
 179
 180 #ifdef CONFIG_SSB_DRIVER_GIGE
 181 static int gige_map_irq_callback(struct ssb_bus *bus, unsigned long data)
 182 {
 183         const struct pci_dev *pdev = (const struct pci_dev *)data;
 184         struct ssb_device *dev;
 185         unsigned int i;
 186         int res;
 187
 188         for (i = 0; i < bus->nr_devices; i++) {
 189                 dev = &(bus->devices[i]);
 190                 if (dev->id.coreid != SSB_DEV_ETHERNET_GBIT)
 191                         continue;
 192                 if (!dev->dev ||
 193                     !dev->dev->driver ||
 194                     !device_is_registered(dev->dev))
 195                         continue;
 196                 res = ssb_gige_map_irq(dev, pdev);
 197                 if (res >= 0)
 198                         return res;
 199         }
 200
 201         return -ENODEV;
 202 }
 203 #endif /* CONFIG_SSB_DRIVER_GIGE */
 204
 205 int ssb_pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 206 {
 207         int res;
 208
 209         /* Check if this PCI device is a device on a SSB bus or device
 210          * and return the IRQ number for it. */
 211
 212         res = ssb_pcicore_pcibios_map_irq(dev, slot, pin);
 213         if (res >= 0)
 214                 return res;
 215 #ifdef CONFIG_SSB_DRIVER_GIGE
 216         res = ssb_for_each_bus_call((unsigned long)dev, gige_map_irq_callback);
 217         if (res >= 0)
 218                 return res;
 219 #endif
 220         /* This is not a PCI device on any SSB device. */
 221
 222         return -ENODEV;
 223 }