From 3a81285409cf09091b1704d126a38a5126030d2b Mon Sep 17 00:00:00 2001 From: Li-Ta Lo Date: Fri, 3 Dec 2004 22:39:34 +0000 Subject: allocating resource for legacy VGA frame buffer, it is not 100% correct but it works anyway. git-svn-id: svn://svn.coreboot.org/coreboot/trunk@1811 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1 --- src/devices/device.c | 72 +++++++++++++++++++++++----------------------------- 1 file changed, 32 insertions(+), 40 deletions(-) (limited to 'src/devices/device.c') diff --git a/src/devices/device.c b/src/devices/device.c index 87e627d52c..d974a1930d 100644 --- a/src/devices/device.c +++ b/src/devices/device.c @@ -56,10 +56,12 @@ device_t alloc_dev(struct bus *parent, struct device_path *path) int link; spin_lock(&dev_lock); + /* Find the last child of our parent */ - for(child = parent->children; child && child->sibling; ) { + for (child = parent->children; child && child->sibling; ) { child = child->sibling; } + dev = malloc(sizeof(*dev)); if (dev == 0) { die("DEV: out of memory.\n"); @@ -67,13 +69,12 @@ device_t alloc_dev(struct bus *parent, struct device_path *path) memset(dev, 0, sizeof(*dev)); memcpy(&dev->path, path, sizeof(*path)); - /* Initialize the back pointers in the link fields */ - for(link = 0; link < MAX_LINKS; link++) { + for (link = 0; link < MAX_LINKS; link++) { dev->link[link].dev = dev; dev->link[link].link = link; } - + /* By default devices are enabled */ dev->enabled = 1; @@ -118,10 +119,10 @@ static void read_resources(struct bus *bus) struct device *curdev; printk_spew("%s read_resources bus %d link: %d\n", - dev_path(bus->dev), bus->secondary, bus->link); + dev_path(bus->dev), bus->secondary, bus->link); /* Walk through all of the devices and find which resources they need. */ - for(curdev = bus->children; curdev; curdev = curdev->sibling) { + for (curdev = bus->children; curdev; curdev = curdev->sibling) { unsigned links; int i; if (curdev->have_resources) { @@ -139,7 +140,7 @@ static void read_resources(struct bus *bus) curdev->have_resources = 1; /* Read in subtractive resources behind the current device */ links = 0; - for(i = 0; i < curdev->resources; i++) { + for (i = 0; i < curdev->resources; i++) { struct resource *resource; unsigned link; resource = &curdev->resource[i]; @@ -148,7 +149,7 @@ static void read_resources(struct bus *bus) link = IOINDEX_SUBTRACTIVE_LINK(resource->index); if (link > MAX_LINKS) { printk_err("%s subtractive index on link: %d\n", - dev_path(curdev), link); + dev_path(curdev), link); continue; } if (!(links & (1 << link))) { @@ -159,7 +160,7 @@ static void read_resources(struct bus *bus) } } printk_spew("%s read_resources bus %d link: %d done\n", - dev_path(bus->dev), bus->secondary, bus->link); + dev_path(bus->dev), bus->secondary, bus->link); } struct pick_largest_state { @@ -190,9 +191,9 @@ static void pick_largest_resource(void *gp, return; } if (!state->result || - (state->result->align < resource->align) || - ((state->result->align == resource->align) && - (state->result->size < resource->size))) { + (state->result->align < resource->align) || + ((state->result->align == resource->align) && + (state->result->size < resource->size))) { state->result_dev = dev; state->result = resource; } @@ -257,11 +258,10 @@ void compute_allocate_resource( base = bridge->base; printk_spew("%s compute_allocate_%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", - base, bridge->size, bridge->align, bridge->gran); - + dev_path(bus->dev), + (bridge->flags & IORESOURCE_IO)? "io": + (bridge->flags & IORESOURCE_PREFETCH)? "prefmem" : "mem", + base, bridge->size, bridge->align, bridge->gran); /* We want different minimum alignments for different kinds of * resources. These minimums are not device type specific @@ -283,14 +283,13 @@ void compute_allocate_resource( /* Walk through all the devices on the current bus and * compute the addresses. */ - while((dev = largest_resource(bus, &resource, type_mask, type))) { + while ((dev = largest_resource(bus, &resource, type_mask, type))) { resource_t size; /* Do NOT I repeat do not ignore resources which have zero size. * If they need to be ignored dev->read_resources should not even * return them. Some resources must be set even when they have * no size. PCI bridge resources are a good example of this. */ - /* Propogate the resource alignment to the bridge register */ if (resource->align > bridge->align) { bridge->align = resource->align; @@ -339,14 +338,13 @@ void compute_allocate_resource( resource->flags &= ~IORESOURCE_STORED; base += size; - printk_spew( - "%s %02x * [0x%08Lx - 0x%08Lx] %s\n", - dev_path(dev), - resource->index, - resource->base, - resource->base + resource->size - 1, - (resource->flags & IORESOURCE_IO)? "io": - (resource->flags & IORESOURCE_PREFETCH)? "prefmem": "mem"); + printk_spew("%s %02x * [0x%08Lx - 0x%08Lx] %s\n", + dev_path(dev), + resource->index, + resource->base, + resource->base + resource->size - 1, + (resource->flags & IORESOURCE_IO)? "io": + (resource->flags & IORESOURCE_PREFETCH)? "prefmem": "mem"); } } /* A pci bridge resource does not need to be a power @@ -358,10 +356,10 @@ void compute_allocate_resource( bridge->size = round(base, bridge->gran) - bridge->base; printk_spew("%s compute_allocate_%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); + dev_path(bus->dev), + (bridge->flags & IORESOURCE_IO)? "io": + (bridge->flags & IORESOURCE_PREFETCH)? "prefmem" : "mem", + base, bridge->size, bridge->align, bridge->gran); } @@ -380,10 +378,6 @@ static void allocate_vga_resource(void) if (((dev->class >> 16) == PCI_BASE_CLASS_DISPLAY) && ((dev->class >> 8) != PCI_CLASS_DISPLAY_OTHER)) { if (!vga) { - printk_debug("Allocating VGA resource %s\n", - dev_path(dev)); - printk_debug("parent of the vga device %s\n", - dev_path(dev->bus->dev)); vga = dev; } if (vga == dev) { @@ -400,8 +394,6 @@ static void allocate_vga_resource(void) } /* Now walk up the bridges setting the VGA enable */ while (bus) { - printk_info("Enabling VGA forward on bus connect to %s\n", - dev_path(bus->dev)); bus->bridge_ctrl |= PCI_BRIDGE_CTL_VGA; bus = (bus == bus->dev->bus)? 0 : bus->dev->bus; } @@ -545,7 +537,7 @@ void dev_configure(void) printk_info("Reading resources...\n"); root->ops->read_resources(root); - printk_info("Done\n"); + printk_info("Done reading resources.\n"); /* Get the resources */ io = &root->resource[0]; @@ -567,13 +559,13 @@ void dev_configure(void) /* Store the computed resource allocations into device registers ... */ printk_info("Setting resources...\n"); root->ops->set_resources(root); - printk_info("Done\n"); + printk_info("Done setting resources.\n"); #if 0 mem->flags |= IORESOURCE_STORED; report_resource_stored(root, mem, ""); #endif - printk_info("done.\n"); + printk_info("Done allocating resources.\n"); } /** -- cgit v1.2.3