#include <common.h>
#include <dm.h>
#include <errno.h>
+#include <log.h>
#include <pci.h>
void pciauto_region_init(struct pci_region *res)
/*
* Avoid allocating PCI resources from address 0 -- this is illegal
* according to PCI 2.1 and moreover, this is known to cause Linux IDE
- * drivers to fail. Use a reasonable starting value of 0x1000 instead.
+ * drivers to fail. Use a reasonable starting value of 0x1000 instead
+ * if the bus start address is below 0x1000.
*/
- res->bus_lower = res->bus_start ? res->bus_start : 0x1000;
+ res->bus_lower = res->bus_start < 0x1000 ? 0x1000 : res->bus_start;
}
void pciauto_region_align(struct pci_region *res, pci_size_t size)
addr = ((res->bus_lower - 1) | (size - 1)) + 1;
if (addr - res->bus_start + size > res->size) {
- debug("No room in resource");
+ debug("No room in resource, avail start=%llx / size=%llx, "
+ "need=%llx\n", (unsigned long long)res->bus_lower,
+ (unsigned long long)res->size, (unsigned long long)size);
goto error;
}