1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * 4 * Copyright (C) 2003, 04, 11 Ralf Baechle (ralf@linux-mips.org) 5 * Copyright (C) 2011 Wind River Systems, 6 * written by Ralf Baechle (ralf@linux-mips.org) 7 */ 8 #include <linux/bug.h> 9 #include <linux/kernel.h> 10 #include <linux/mm.h> 11 #include <linux/memblock.h> 12 #include <linux/export.h> 13 #include <linux/init.h> 14 #include <linux/types.h> 15 #include <linux/pci.h> 16 #include <linux/of_address.h> 17 18 #include <asm/cpu-info.h> 19 20 unsigned long PCIBIOS_MIN_IO; 21 EXPORT_SYMBOL(PCIBIOS_MIN_IO); 22 23 unsigned long PCIBIOS_MIN_MEM; 24 EXPORT_SYMBOL(PCIBIOS_MIN_MEM); 25 26 static int __init pcibios_set_cache_line_size(void) 27 { 28 unsigned int lsize; 29 30 /* 31 * Set PCI cacheline size to that of the highest level in the 32 * cache hierarchy. 33 */ 34 lsize = cpu_dcache_line_size(); 35 lsize = cpu_scache_line_size() ? : lsize; 36 lsize = cpu_tcache_line_size() ? : lsize; 37 38 BUG_ON(!lsize); 39 40 pci_dfl_cache_line_size = lsize >> 2; 41 42 pr_debug("PCI: pci_cache_line_size set to %d bytes\n", lsize); 43 return 0; 44 } 45 arch_initcall(pcibios_set_cache_line_size); 46 47 void pci_resource_to_user(const struct pci_dev *dev, int bar, 48 const struct resource *rsrc, resource_size_t *start, 49 resource_size_t *end) 50 { 51 phys_addr_t size = resource_size(rsrc); 52 53 *start = fixup_bigphys_addr(rsrc->start, size); 54 *end = rsrc->start + size - 1; 55 } 56