diff options
Diffstat (limited to 'drivers/of')
| -rw-r--r-- | drivers/of/of_reserved_mem.c | 60 | ||||
| -rw-r--r-- | drivers/of/platform.c | 7 | ||||
| -rw-r--r-- | drivers/of/unittest.c | 4 |
3 files changed, 63 insertions, 8 deletions
diff --git a/drivers/of/of_reserved_mem.c b/drivers/of/of_reserved_mem.c index 948efa9f99e3..7ec94cfcbddb 100644 --- a/drivers/of/of_reserved_mem.c +++ b/drivers/of/of_reserved_mem.c @@ -78,6 +78,57 @@ void __init fdt_reserved_mem_save_node(unsigned long node, const char *uname, } /* + * __reserved_mem_alloc_in_range() - allocate reserved memory described with + * 'alloc-ranges'. Choose bottom-up/top-down depending on nearby existing + * reserved regions to keep the reserved memory contiguous if possible. + */ +static int __init __reserved_mem_alloc_in_range(phys_addr_t size, + phys_addr_t align, phys_addr_t start, phys_addr_t end, bool nomap, + phys_addr_t *res_base) +{ + bool prev_bottom_up = memblock_bottom_up(); + bool bottom_up = false, top_down = false; + int ret, i; + + for (i = 0; i < reserved_mem_count; i++) { + struct reserved_mem *rmem = &reserved_mem[i]; + + /* Skip regions that were not reserved yet */ + if (rmem->size == 0) + continue; + + /* + * If range starts next to an existing reservation, use bottom-up: + * |....RRRR................RRRRRRRR..............| + * --RRRR------ + */ + if (start >= rmem->base && start <= (rmem->base + rmem->size)) + bottom_up = true; + + /* + * If range ends next to an existing reservation, use top-down: + * |....RRRR................RRRRRRRR..............| + * -------RRRR----- + */ + if (end >= rmem->base && end <= (rmem->base + rmem->size)) + top_down = true; + } + + /* Change setting only if either bottom-up or top-down was selected */ + if (bottom_up != top_down) + memblock_set_bottom_up(bottom_up); + + ret = early_init_dt_alloc_reserved_memory_arch(size, align, + start, end, nomap, res_base); + + /* Restore old setting if needed */ + if (bottom_up != top_down) + memblock_set_bottom_up(prev_bottom_up); + + return ret; +} + +/* * __reserved_mem_alloc_size() - allocate reserved memory described by * 'size', 'alignment' and 'alloc-ranges' properties. */ @@ -137,8 +188,8 @@ static int __init __reserved_mem_alloc_size(unsigned long node, end = start + dt_mem_next_cell(dt_root_size_cells, &prop); - ret = early_init_dt_alloc_reserved_memory_arch(size, - align, start, end, nomap, &base); + ret = __reserved_mem_alloc_in_range(size, align, + start, end, nomap, &base); if (ret == 0) { pr_debug("allocated memory for '%s' node: base %pa, size %lu MiB\n", uname, &base, @@ -217,6 +268,11 @@ static int __init __rmem_cmp(const void *a, const void *b) if (ra->size > rb->size) return 1; + if (ra->fdt_node < rb->fdt_node) + return -1; + if (ra->fdt_node > rb->fdt_node) + return 1; + return 0; } diff --git a/drivers/of/platform.c b/drivers/of/platform.c index 78ae84187449..051e29b7ad2b 100644 --- a/drivers/of/platform.c +++ b/drivers/of/platform.c @@ -140,8 +140,8 @@ struct platform_device *of_device_alloc(struct device_node *np, } } - dev->dev.of_node = of_node_get(np); - dev->dev.fwnode = &np->fwnode; + /* setup generic device info */ + device_set_node(&dev->dev, of_fwnode_handle(np)); dev->dev.parent = parent ? : &platform_bus; if (bus_id) @@ -239,8 +239,7 @@ static struct amba_device *of_amba_device_create(struct device_node *node, dev->dev.dma_mask = &dev->dev.coherent_dma_mask; /* setup generic device info */ - dev->dev.of_node = of_node_get(node); - dev->dev.fwnode = &node->fwnode; + device_set_node(&dev->dev, of_fwnode_handle(node)); dev->dev.parent = parent ? : &platform_bus; dev->dev.platform_data = platform_data; if (bus_id) diff --git a/drivers/of/unittest.c b/drivers/of/unittest.c index 5386efeaf710..a406a12eb208 100644 --- a/drivers/of/unittest.c +++ b/drivers/of/unittest.c @@ -2658,7 +2658,7 @@ static struct i2c_driver unittest_i2c_dev_driver = { .driver = { .name = "unittest-i2c-dev", }, - .probe_new = unittest_i2c_dev_probe, + .probe = unittest_i2c_dev_probe, .remove = unittest_i2c_dev_remove, .id_table = unittest_i2c_dev_id, }; @@ -2735,7 +2735,7 @@ static struct i2c_driver unittest_i2c_mux_driver = { .driver = { .name = "unittest-i2c-mux", }, - .probe_new = unittest_i2c_mux_probe, + .probe = unittest_i2c_mux_probe, .remove = unittest_i2c_mux_remove, .id_table = unittest_i2c_mux_id, }; |