summaryrefslogtreecommitdiff
path: root/src/devices/pci_device.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/devices/pci_device.c')
-rw-r--r--src/devices/pci_device.c102
1 files changed, 42 insertions, 60 deletions
diff --git a/src/devices/pci_device.c b/src/devices/pci_device.c
index 6062fa6387..c024eb4757 100644
--- a/src/devices/pci_device.c
+++ b/src/devices/pci_device.c
@@ -53,6 +53,7 @@ static uint16_t pci_moving_config16(struct device *dev, unsigned reg)
return ones ^ zeroes;
}
+
static uint32_t pci_moving_config32(struct device *dev, unsigned reg)
{
uint32_t value, ones, zeroes;
@@ -92,7 +93,6 @@ unsigned pci_find_capability(device_t dev, unsigned cap)
return 0;
}
-
/** Given a device and register, read the size of the BAR for that register.
* @param dev Pointer to the device structure
* @param resource Pointer to the resource structure
@@ -134,7 +134,7 @@ struct resource *pci_get_resource(struct device *dev, unsigned long index)
if (moving) {
resource->size = 1;
resource->align = resource->gran = 0;
- while(!(moving & resource->size)) {
+ while (!(moving & resource->size)) {
resource->size <<= 1;
resource->align += 1;
resource->gran += 1;
@@ -158,15 +158,13 @@ struct resource *pci_get_resource(struct device *dev, unsigned long index)
dev_path(dev), index, value);
}
resource->flags = 0;
- }
- else if (attr & PCI_BASE_ADDRESS_SPACE_IO) {
+ } else if (attr & PCI_BASE_ADDRESS_SPACE_IO) {
/* An I/O mapped base address */
attr &= PCI_BASE_ADDRESS_IO_ATTR_MASK;
resource->flags |= IORESOURCE_IO;
/* I don't want to deal with 32bit I/O resources */
resource->limit = 0xffff;
- }
- else {
+ } else {
/* A Memory mapped base address */
attr &= PCI_BASE_ADDRESS_MEM_ATTR_MASK;
resource->flags |= IORESOURCE_MEM;
@@ -177,17 +175,14 @@ struct resource *pci_get_resource(struct device *dev, unsigned long index)
if (attr == PCI_BASE_ADDRESS_MEM_LIMIT_32) {
/* 32bit limit */
resource->limit = 0xffffffffUL;
- }
- else if (attr == PCI_BASE_ADDRESS_MEM_LIMIT_1M) {
+ } else if (attr == PCI_BASE_ADDRESS_MEM_LIMIT_1M) {
/* 1MB limit */
resource->limit = 0x000fffffUL;
- }
- else if (attr == PCI_BASE_ADDRESS_MEM_LIMIT_64) {
+ } else if (attr == PCI_BASE_ADDRESS_MEM_LIMIT_64) {
/* 64bit limit */
resource->limit = 0xffffffffffffffffULL;
resource->flags |= IORESOURCE_PCI64;
- }
- else {
+ } else {
/* Invalid value */
resource->flags = 0;
}
@@ -217,26 +212,10 @@ struct resource *pci_get_resource(struct device *dev, unsigned long index)
return resource;
}
-/** Read the base address registers for a given device.
- * @param dev Pointer to the dev structure
- * @param howmany How many registers to read (6 for device, 2 for bridge)
- */
-static void pci_read_bases(struct device *dev, unsigned int howmany)
-{
- unsigned long index;
-
- for (index = PCI_BASE_ADDRESS_0; (index < PCI_BASE_ADDRESS_0 + (howmany << 2)); ) {
- struct resource *resource;
- resource = pci_get_resource(dev, index);
- index += (resource->flags & IORESOURCE_PCI64)?8:4;
- }
- compact_resources(dev);
-}
-
-static void pci_read_rom_resource(struct device *dev, unsigned long index)
+static void pci_get_rom_resource(struct device *dev, unsigned long index)
{
struct resource *resource;
- unsigned long value, attr;
+ unsigned long value;
resource_t moving, limit;
/* Initialize the resources to nothing */
@@ -248,7 +227,7 @@ static void pci_read_rom_resource(struct device *dev, unsigned long index)
/* See which bits move */
moving = pci_moving_config32(dev, index);
/* clear the Enable bit */
- moving = moving & 0xffffffffe;
+ moving = moving & ~PCI_ROM_ADDRESS_ENABLE;
/* Find the resource constraints.
*
@@ -262,14 +241,12 @@ static void pci_read_rom_resource(struct device *dev, unsigned long index)
if (moving) {
resource->size = 1;
resource->align = resource->gran = 0;
- while(!(moving & resource->size)) {
+ while (!(moving & resource->size)) {
resource->size <<= 1;
resource->align += 1;
resource->gran += 1;
}
resource->limit = limit = moving | (resource->size - 1);
- printk_debug("%s, rom size: %x, limit: %x\n",
- dev_path(dev), resource->size, limit);
}
if (moving == 0) {
@@ -281,8 +258,25 @@ static void pci_read_rom_resource(struct device *dev, unsigned long index)
} else {
resource->flags |= IORESOURCE_MEM | IORESOURCE_READONLY;
}
- compact_resources(dev);
+}
+
+/** Read the base address registers for a given device.
+ * @param dev Pointer to the dev structure
+ * @param howmany How many registers to read (6 for device, 2 for bridge)
+ */
+static void pci_read_bases(struct device *dev, unsigned int howmany, unsigned long rom)
+{
+ unsigned long index;
+ for (index = PCI_BASE_ADDRESS_0; (index < PCI_BASE_ADDRESS_0 + (howmany << 2)); ) {
+ struct resource *resource;
+ resource = pci_get_resource(dev, index);
+ index += (resource->flags & IORESOURCE_PCI64)?8:4;
+ }
+ if (rom)
+ pci_get_rom_resource(dev, rom);
+
+ compact_resources(dev);
}
static void pci_set_resource(struct device *dev, struct resource *resource);
@@ -328,7 +322,6 @@ static void pci_bridge_read_bases(struct device *dev)
{
resource_t moving_base, moving_limit, moving;
-
/* See if the bridge I/O resources are implemented */
moving_base = ((uint32_t)pci_moving_config8(dev, PCI_IO_BASE)) << 8;
moving_base |= ((uint32_t)pci_moving_config16(dev, PCI_IO_BASE_UPPER16)) << 16;
@@ -339,10 +332,8 @@ static void pci_bridge_read_bases(struct device *dev)
moving = moving_base & moving_limit;
/* Initialize the io space constraints on the current bus */
- pci_record_bridge_resource(
- dev, moving, PCI_IO_BASE,
- IORESOURCE_IO, IORESOURCE_IO);
-
+ pci_record_bridge_resource(dev, moving, PCI_IO_BASE,
+ IORESOURCE_IO, IORESOURCE_IO);
/* See if the bridge prefmem resources are implemented */
moving_base = ((resource_t)pci_moving_config16(dev, PCI_PREF_MEMORY_BASE)) << 16;
@@ -353,11 +344,9 @@ static void pci_bridge_read_bases(struct device *dev)
moving = moving_base & moving_limit;
/* Initiliaze the prefetchable memory constraints on the current bus */
- pci_record_bridge_resource(
- dev, moving, PCI_PREF_MEMORY_BASE,
- IORESOURCE_MEM | IORESOURCE_PREFETCH,
- IORESOURCE_MEM | IORESOURCE_PREFETCH);
-
+ pci_record_bridge_resource(dev, moving, PCI_PREF_MEMORY_BASE,
+ IORESOURCE_MEM | IORESOURCE_PREFETCH,
+ IORESOURCE_MEM | IORESOURCE_PREFETCH);
/* See if the bridge mem resources are implemented */
moving_base = ((uint32_t)pci_moving_config16(dev, PCI_MEMORY_BASE)) << 16;
@@ -366,10 +355,9 @@ static void pci_bridge_read_bases(struct device *dev)
moving = moving_base & moving_limit;
/* Initialize the memory resources on the current bus */
- pci_record_bridge_resource(
- dev, moving, PCI_MEMORY_BASE,
- IORESOURCE_MEM | IORESOURCE_PREFETCH,
- IORESOURCE_MEM);
+ pci_record_bridge_resource(dev, moving, PCI_MEMORY_BASE,
+ IORESOURCE_MEM | IORESOURCE_PREFETCH,
+ IORESOURCE_MEM);
compact_resources(dev);
}
@@ -378,9 +366,7 @@ void pci_dev_read_resources(struct device *dev)
{
uint32_t addr;
- pci_read_bases(dev, 6);
-
- pci_read_rom_resource(dev, PCI_ROM_ADDRESS);
+ pci_read_bases(dev, 6, PCI_ROM_ADDRESS);
}
void pci_bus_read_resources(struct device *dev)
@@ -388,9 +374,7 @@ void pci_bus_read_resources(struct device *dev)
uint32_t addr;
pci_bridge_read_bases(dev);
- pci_read_bases(dev, 2);
-
- pci_read_rom_resource(dev, PCI_ROM_ADDRESS1);
+ pci_read_bases(dev, 2, PCI_ROM_ADDRESS1);
}
static void pci_set_resource(struct device *dev, struct resource *resource)
@@ -722,9 +706,8 @@ static struct device *pci_scan_get_dev(struct device **list, unsigned int devfn)
*
* @return The maximum bus number found, after scanning all subordinate busses
*/
-unsigned int pci_scan_bus(struct bus *bus,
- unsigned min_devfn, unsigned max_devfn,
- unsigned int max)
+unsigned int pci_scan_bus(struct bus *bus, unsigned min_devfn, unsigned max_devfn,
+ unsigned int max)
{
unsigned int devfn;
device_t dev;
@@ -1000,8 +983,7 @@ static void pci_level_irq(unsigned char intNum)
-kevinh@ispiri.com
*/
-void pci_assign_irqs(unsigned bus, unsigned slot,
- const unsigned char pIntAtoD[4])
+void pci_assign_irqs(unsigned bus, unsigned slot, const unsigned char pIntAtoD[4])
{
unsigned functNum;
device_t pdev;
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-09 23:43:22 +0000