diff options
| -rw-r--r-- | src/device/device_util.c | 15 | ||||
| -rw-r--r-- | src/include/device/device.h | 56 |
2 files changed, 71 insertions, 0 deletions
diff --git a/src/device/device_util.c b/src/device/device_util.c index 383e17b0f6b0..7e31b43495c2 100644 --- a/src/device/device_util.c +++ b/src/device/device_util.c @@ -841,6 +841,21 @@ const struct resource *fixed_resource_range_idx(struct device *dev, unsigned lon return resource; } +const struct resource *lower_ram_end(struct device *dev, unsigned long index, uint64_t end) +{ + return ram_from_to(dev, index, 0, end); +} + +const struct resource *upper_ram_end(struct device *dev, unsigned long index, uint64_t end) +{ + if (end <= 4ull * GiB) + return NULL; + + printk(BIOS_INFO, "Available memory above 4GB: %lluM\n", (end - 4ull * GiB) / MiB); + + return ram_from_to(dev, index, 4ull * GiB, end); +} + void mmconf_resource(struct device *dev, unsigned long index) { struct resource *resource = new_resource(dev, index); diff --git a/src/include/device/device.h b/src/include/device/device.h index 8f5407dcfc63..536b77730ef7 100644 --- a/src/include/device/device.h +++ b/src/include/device/device.h @@ -334,6 +334,62 @@ const struct resource *fixed_mem_from_to_flags(struct device *dev, unsigned long } static inline +const struct resource *ram_range(struct device *dev, unsigned long index, uint64_t base, + uint64_t size) +{ + return fixed_mem_range_flags(dev, index, base, size, IORESOURCE_CACHEABLE | IORESOURCE_STORED); +} + +static inline +const struct resource *ram_from_to(struct device *dev, unsigned long index, uint64_t base, + uint64_t end) +{ + if (end <= base) + return NULL; + return ram_range(dev, index, base, end - base); +} + +static inline +const struct resource *reserved_ram_range(struct device *dev, unsigned long index, + uint64_t base, uint64_t size) +{ + return fixed_mem_range_flags(dev, index, base, size, IORESOURCE_CACHEABLE | + IORESOURCE_RESERVE | IORESOURCE_STORED); +} + +static inline +const struct resource *reserved_ram_from_to(struct device *dev, unsigned long index, + uint64_t base, uint64_t end) +{ + if (end <= base) + return NULL; + return reserved_ram_range(dev, index, base, end - base); +} + +static inline +const struct resource *mmio_range(struct device *dev, unsigned long index, uint64_t base, + uint64_t size) +{ + return fixed_mem_range_flags(dev, index, base, size, IORESOURCE_RESERVE | IORESOURCE_STORED); +} + +static inline +const struct resource *mmio_from_to(struct device *dev, unsigned long index, uint64_t base, + uint64_t end) +{ + if (end <= base) + return NULL; + return mmio_range(dev, index, base, end - base); +} + +const struct resource *lower_ram_end(struct device *dev, unsigned long index, uint64_t end); +const struct resource *upper_ram_end(struct device *dev, unsigned long index, uint64_t end); + +#define bad_ram_range(...) reserved_ram_range(__VA_ARGS__) +#define uma_range(...) mmio_range(__VA_ARGS__) +#define uma_from_to(...) mmio_from_to(__VA_ARGS__) + +static inline const struct resource *fixed_io_range_flags(struct device *dev, unsigned long index, uint16_t base, uint16_t size, unsigned long flags) { |