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-rw-r--r--src/devices/device.c98
1 files changed, 48 insertions, 50 deletions
diff --git a/src/devices/device.c b/src/devices/device.c
index 06d32ea1f8..4a2ef12450 100644
--- a/src/devices/device.c
+++ b/src/devices/device.c
@@ -17,10 +17,10 @@
/*
* (c) 1999--2000 Martin Mares <mj@suse.cz>
*/
-/* lots of mods by ron minnich (rminnich@lanl.gov), with
+/* lots of mods by ron minnich (rminnich@lanl.gov), with
* the final architecture guidance from Tom Merritt (tjm@codegen.com)
- * In particular, we changed from the one-pass original version to
- * Tom's recommended multiple-pass version. I wasn't sure about doing
+ * In particular, we changed from the one-pass original version to
+ * Tom's recommended multiple-pass version. I wasn't sure about doing
* it with multiple passes, until I actually started doing it and saw
* the wisdom of Tom's recommendations ...
*
@@ -52,7 +52,7 @@ extern struct device **last_dev_p;
/**
* @brief Allocate a new device structure.
- *
+ *
* Allocte a new device structure and attached it to the device tree as a
* child of the parent bus.
*
@@ -69,7 +69,7 @@ device_t alloc_dev(struct bus *parent, struct device_path *path)
device_t dev, child;
int link;
- spin_lock(&dev_lock);
+ spin_lock(&dev_lock);
/* Find the last child of our parent */
for(child = parent->children; child && child->sibling; ) {
@@ -111,7 +111,7 @@ device_t alloc_dev(struct bus *parent, struct device_path *path)
}
/**
- * @brief round a number up to an alignment.
+ * @brief round a number up to an alignment.
* @param val the starting value
* @param roundup Alignment as a power of two
* @returns rounded up number
@@ -158,7 +158,7 @@ static void read_resources(struct bus *bus)
struct resource *resource;
unsigned link;
resource = &curdev->resource[i];
- if (!(resource->flags & IORESOURCE_SUBTRACTIVE))
+ if (!(resource->flags & IORESOURCE_SUBTRACTIVE))
continue;
link = IOINDEX_SUBTRACTIVE_LINK(resource->index);
if (link > MAX_LINKS) {
@@ -194,24 +194,23 @@ static void pick_largest_resource(void *gp,
state->seen_last = 1;
return;
}
- if (resource->flags & IORESOURCE_FIXED ) return; //skip it
- if (last && (
- (last->align < resource->align) ||
- ((last->align == resource->align) &&
- (last->size < resource->size)) ||
- ((last->align == resource->align) &&
- (last->size == resource->size) &&
- (!state->seen_last)))) {
+ if (resource->flags & IORESOURCE_FIXED)
+ return; // Skip it.
+ if (last && ((last->align < resource->align) ||
+ ((last->align == resource->align) &&
+ (last->size < resource->size)) ||
+ ((last->align == resource->align) &&
+ (last->size == resource->size) && (!state->seen_last)))) {
return;
}
- if (!state->result ||
- (state->result->align < resource->align) ||
- ((state->result->align == resource->align) &&
- (state->result->size < resource->size)))
+ if (!state->result ||
+ (state->result->align < resource->align) ||
+ ((state->result->align == resource->align) &&
+ (state->result->size < resource->size)))
{
state->result_dev = dev;
state->result = resource;
- }
+ }
}
static struct device *largest_resource(struct bus *bus, struct resource **result_res,
@@ -224,14 +223,15 @@ static struct device *largest_resource(struct bus *bus, struct resource **result
state.result = 0;
state.seen_last = 0;
- search_bus_resources(bus, type_mask, type, pick_largest_resource, &state);
+ search_bus_resources(bus, type_mask, type, pick_largest_resource,
+ &state);
*result_res = state.result;
return state.result_dev;
}
/* Compute allocate resources is the guts of the resource allocator.
- *
+ *
* The problem.
* - Allocate resources locations for every device.
* - Don't overlap, and follow the rules of bridges.
@@ -253,7 +253,7 @@ static struct device *largest_resource(struct bus *bus, struct resource **result
* bridges. The first to see how large the resources are behind
* the bridge, and what their alignment requirements are. The
* second to assign a safe address to the devices behind the
- * bridge. This allows me to treat a bridge as just a device with
+ * bridge. This allows me to treat a bridge as just a device with
* a couple of resources, and not need to special case it in the
* allocator. Also this allows handling of other types of bridges.
*
@@ -272,7 +272,7 @@ void compute_allocate_resource(
min_align = 0;
base = bridge->base;
- printk_spew("%s compute_allocate_resource %s: base: %08Lx size: %08Lx align: %d gran: %d\n",
+ printk_spew("%s compute_allocate_resource %s: base: %08Lx size: %08Lx align: %d gran: %d\n",
dev_path(bus->dev),
(bridge->flags & IORESOURCE_IO)? "io":
(bridge->flags & IORESOURCE_PREFETCH)? "prefmem" : "mem",
@@ -295,7 +295,7 @@ void compute_allocate_resource(
/* Remember I haven't found anything yet. */
resource = 0;
- /* Walk through all the devices on the current bus and
+ /* Walk through all the devices on the current bus and
* compute the addresses.
*/
while((dev = largest_resource(bus, &resource, type_mask, type))) {
@@ -356,11 +356,11 @@ void compute_allocate_resource(
resource->flags |= IORESOURCE_ASSIGNED;
resource->flags &= ~IORESOURCE_STORED;
base += size;
-
+
printk_spew("%s %02lx * [0x%08Lx - 0x%08Lx] %s\n",
dev_path(dev),
- resource->index,
- resource->base,
+ resource->index,
+ resource->base,
resource->base + resource->size - 1,
(resource->flags & IORESOURCE_IO)? "io":
(resource->flags & IORESOURCE_PREFETCH)? "prefmem": "mem");
@@ -380,13 +380,11 @@ void compute_allocate_resource(
*/
bridge->size = round(base, bridge->gran) - bridge->base;
- printk_spew("%s compute_allocate_resource %s: base: %08Lx size: %08Lx align: %d gran: %d done\n",
- dev_path(bus->dev),
- (bridge->flags & IORESOURCE_IO)? "io":
- (bridge->flags & IORESOURCE_PREFETCH)? "prefmem" : "mem",
- base, bridge->size, bridge->align, bridge->gran);
-
-
+ printk_spew("%s compute_allocate_resource %s: base: %08Lx size: %08Lx align: %d gran: %d done\n",
+ dev_path(bus->dev),
+ (bridge->flags & IORESOURCE_IO)? "io":
+ (bridge->flags & IORESOURCE_PREFETCH)? "prefmem" : "mem",
+ base, bridge->size, bridge->align, bridge->gran);
}
#if CONFIG_CONSOLE_VGA == 1
@@ -407,7 +405,7 @@ static void allocate_vga_resource(void)
for(dev = all_devices; dev; dev = dev->next) {
if (!dev->enabled) continue;
if (((dev->class >> 16) == PCI_BASE_CLASS_DISPLAY) &&
- ((dev->class >> 8) != PCI_CLASS_DISPLAY_OTHER))
+ ((dev->class >> 8) != PCI_CLASS_DISPLAY_OTHER))
{
if (!vga_first) {
if (dev->on_mainboard) {
@@ -427,7 +425,7 @@ static void allocate_vga_resource(void)
dev->command &= ~(PCI_COMMAND_MEMORY | PCI_COMMAND_IO);
}
}
-
+
vga = vga_last;
if(!vga) {
@@ -443,7 +441,7 @@ static void allocate_vga_resource(void)
vga = vga_onboard;
}
-
+
if (vga) {
/* vga is first add on card or the only onboard vga */
printk_debug("Allocating VGA resource %s\n", dev_path(vga));
@@ -458,7 +456,7 @@ static void allocate_vga_resource(void)
dev_path(bus->dev));
bus->bridge_ctrl |= PCI_BRIDGE_CTL_VGA;
bus = (bus == bus->dev->bus)? 0 : bus->dev->bus;
- }
+ }
}
#endif
@@ -481,7 +479,7 @@ void assign_resources(struct bus *bus)
{
struct device *curdev;
- printk_spew("%s assign_resources, bus %d link: %d\n",
+ printk_spew("%s assign_resources, bus %d link: %d\n",
dev_path(bus->dev), bus->secondary, bus->link);
for(curdev = bus->children; curdev; curdev = curdev->sibling) {
@@ -495,7 +493,7 @@ void assign_resources(struct bus *bus)
}
curdev->ops->set_resources(curdev);
}
- printk_spew("%s assign_resources, bus %d link: %d\n",
+ printk_spew("%s assign_resources, bus %d link: %d\n",
dev_path(bus->dev), bus->secondary, bus->link);
}
@@ -529,7 +527,7 @@ void enable_resources(struct device *dev)
dev->ops->enable_resources(dev);
}
-/**
+/**
* @brief Reset all of the devices a bus
*
* Reset all of the devices on a bus and clear the bus's reset_needed flag.
@@ -550,11 +548,11 @@ int reset_bus(struct bus *bus)
return 0;
}
-/**
+/**
* @brief Scan for devices on a bus.
*
* If there are bridges on the bus, recursively scan the buses behind the bridges.
- * If the setting up and tuning of the bus causes a reset to be required,
+ * If the setting up and tuning of the bus causes a reset to be required,
* reset the bus and scan it again.
*
* @param bus pointer to the bus device
@@ -612,7 +610,7 @@ unsigned int scan_bus(device_t bus, unsigned int max)
* This function has no idea how to scan and probe buses and devices at all.
* It depends on the bus/device specific scan_bus() method to do it. The
* scan_bus() method also has to create the device structure and attach
- * it to the device tree.
+ * it to the device tree.
*/
void dev_enumerate(void)
{
@@ -633,7 +631,7 @@ void dev_enumerate(void)
/**
* @brief Configure devices on the devices tree.
- *
+ *
* Starting at the root of the device tree, travel it recursively in two
* passes. In the first pass, we compute and allocate resources (ranges)
* requried by each device. In the second pass, the resources ranges are
@@ -643,7 +641,7 @@ void dev_enumerate(void)
* at DEVICE_MEM_HIGH and grow downward.
*
* Since the assignment is hierarchical we set the values into the dev_root
- * struct.
+ * struct.
*/
void dev_configure(void)
{
@@ -682,7 +680,7 @@ void dev_configure(void)
#if CONFIG_CONSOLE_VGA == 1
/* Allocate the VGA I/O resource.. */
- allocate_vga_resource();
+ allocate_vga_resource();
#endif
/* Store the computed resource allocations into device registers ... */
@@ -726,8 +724,8 @@ void dev_initialize(void)
printk_info("Initializing devices...\n");
for(dev = all_devices; dev; dev = dev->next) {
- if (dev->enabled && !dev->initialized &&
- dev->ops && dev->ops->init)
+ if (dev->enabled && !dev->initialized &&
+ dev->ops && dev->ops->init)
{
if (dev->path.type == DEVICE_PATH_I2C) {
printk_debug("smbus: %s[%d]->",
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-29 13:43:32 +0000