diff options
Diffstat (limited to 'arch/tile/kernel/setup.c')
| -rw-r--r-- | arch/tile/kernel/setup.c | 45 |
1 files changed, 28 insertions, 17 deletions
diff --git a/arch/tile/kernel/setup.c b/arch/tile/kernel/setup.c index dd87f3420390..6a649a4462d3 100644 --- a/arch/tile/kernel/setup.c +++ b/arch/tile/kernel/setup.c @@ -23,6 +23,7 @@ #include <linux/irq.h> #include <linux/kexec.h> #include <linux/pci.h> +#include <linux/swiotlb.h> #include <linux/initrd.h> #include <linux/io.h> #include <linux/highmem.h> @@ -109,7 +110,7 @@ static unsigned int __initdata maxnodemem_pfn[MAX_NUMNODES] = { }; static nodemask_t __initdata isolnodes; -#ifdef CONFIG_PCI +#if defined(CONFIG_PCI) && !defined(__tilegx__) enum { DEFAULT_PCI_RESERVE_MB = 64 }; static unsigned int __initdata pci_reserve_mb = DEFAULT_PCI_RESERVE_MB; unsigned long __initdata pci_reserve_start_pfn = -1U; @@ -160,7 +161,7 @@ static int __init setup_isolnodes(char *str) } early_param("isolnodes", setup_isolnodes); -#ifdef CONFIG_PCI +#if defined(CONFIG_PCI) && !defined(__tilegx__) static int __init setup_pci_reserve(char* str) { unsigned long mb; @@ -171,7 +172,7 @@ static int __init setup_pci_reserve(char* str) pci_reserve_mb = mb; pr_info("Reserving %dMB for PCIE root complex mappings\n", - pci_reserve_mb); + pci_reserve_mb); return 0; } early_param("pci_reserve", setup_pci_reserve); @@ -411,7 +412,7 @@ static void __init setup_memory(void) continue; } #endif -#ifdef CONFIG_PCI +#if defined(CONFIG_PCI) && !defined(__tilegx__) /* * Blocks that overlap the pci reserved region must * have enough space to hold the maximum percpu data @@ -604,11 +605,9 @@ static void __init setup_bootmem_allocator_node(int i) /* Free all the space back into the allocator. */ free_bootmem(PFN_PHYS(start), PFN_PHYS(end - start)); -#if defined(CONFIG_PCI) +#if defined(CONFIG_PCI) && !defined(__tilegx__) /* - * Throw away any memory aliased by the PCI region. FIXME: this - * is a temporary hack to work around bug 10502, and needs to be - * fixed properly. + * Throw away any memory aliased by the PCI region. */ if (pci_reserve_start_pfn < end && pci_reserve_end_pfn > start) reserve_bootmem(PFN_PHYS(pci_reserve_start_pfn), @@ -658,6 +657,8 @@ static void __init zone_sizes_init(void) unsigned long zones_size[MAX_NR_ZONES] = { 0 }; int size = percpu_size(); int num_cpus = smp_height * smp_width; + const unsigned long dma_end = (1UL << (32 - PAGE_SHIFT)); + int i; for (i = 0; i < num_cpus; ++i) @@ -729,6 +730,14 @@ static void __init zone_sizes_init(void) zones_size[ZONE_NORMAL] = end - start; #endif + if (start < dma_end) { + zones_size[ZONE_DMA] = min(zones_size[ZONE_NORMAL], + dma_end - start); + zones_size[ZONE_NORMAL] -= zones_size[ZONE_DMA]; + } else { + zones_size[ZONE_DMA] = 0; + } + /* Take zone metadata from controller 0 if we're isolnode. */ if (node_isset(i, isolnodes)) NODE_DATA(i)->bdata = &bootmem_node_data[0]; @@ -738,7 +747,7 @@ static void __init zone_sizes_init(void) PFN_UP(node_percpu[i])); /* Track the type of memory on each node */ - if (zones_size[ZONE_NORMAL]) + if (zones_size[ZONE_NORMAL] || zones_size[ZONE_DMA]) node_set_state(i, N_NORMAL_MEMORY); #ifdef CONFIG_HIGHMEM if (end != start) @@ -1343,7 +1352,7 @@ void __init setup_arch(char **cmdline_p) setup_cpu_maps(); -#ifdef CONFIG_PCI +#if defined(CONFIG_PCI) && !defined(__tilegx__) /* * Initialize the PCI structures. This is done before memory * setup so that we know whether or not a pci_reserve region @@ -1372,6 +1381,10 @@ void __init setup_arch(char **cmdline_p) * any memory using the bootmem allocator. */ +#ifdef CONFIG_SWIOTLB + swiotlb_init(0); +#endif + paging_init(); setup_numa_mapping(); zone_sizes_init(); @@ -1522,11 +1535,10 @@ static struct resource code_resource = { }; /* - * We reserve all resources above 4GB so that PCI won't try to put - * mappings above 4GB; the standard allows that for some devices but - * the probing code trunates values to 32 bits. + * On Pro, we reserve all resources above 4GB so that PCI won't try to put + * mappings above 4GB. */ -#ifdef CONFIG_PCI +#if defined(CONFIG_PCI) && !defined(__tilegx__) static struct resource* __init insert_non_bus_resource(void) { @@ -1571,8 +1583,7 @@ static int __init request_standard_resources(void) int i; enum { CODE_DELTA = MEM_SV_INTRPT - PAGE_OFFSET }; - iomem_resource.end = -1LL; -#ifdef CONFIG_PCI +#if defined(CONFIG_PCI) && !defined(__tilegx__) insert_non_bus_resource(); #endif @@ -1580,7 +1591,7 @@ static int __init request_standard_resources(void) u64 start_pfn = node_start_pfn[i]; u64 end_pfn = node_end_pfn[i]; -#ifdef CONFIG_PCI +#if defined(CONFIG_PCI) && !defined(__tilegx__) if (start_pfn <= pci_reserve_start_pfn && end_pfn > pci_reserve_start_pfn) { if (end_pfn > pci_reserve_end_pfn) |