2  * Generic PCI host controller as described in PCI Bus Binding to Open Firmware
14 #include "pci-host-generic.h"
49  * See kernel Documentation/devicetree/bindings/pci/host-generic-pci.txt
50  * and function gen_pci_probe() in drivers/pci/host/pci-host-generic.c
68 		printf("No device tree found\n");  in pci_dt_probe()
83 					     "pci-host-ecam-generic");  in pci_dt_probe()
84 	if (node == -FDT_ERR_NOTFOUND) {  in pci_dt_probe()
91 	assert(prop && len == 4 && !strcmp((char *)prop->data, "pci"));  in pci_dt_probe()
97 	prop = fdt_get_property(fdt, node, "bus-range", &len);  in pci_dt_probe()
99 		assert(len == -FDT_ERR_NOTFOUND);  in pci_dt_probe()
103 		data		= (fdt32_t *)prop->data;  in pci_dt_probe()
122 		      sizeof(host->addr_space[0]) * nr_addr_spaces);  in pci_dt_probe()
125 	host->start		= ioremap(base.addr, base.size);  in pci_dt_probe()
126 	host->size		= base.size;  in pci_dt_probe()
127 	host->bus		= bus;  in pci_dt_probe()
128 	host->bus_max		= bus_max;  in pci_dt_probe()
129 	host->nr_addr_spaces	= nr_addr_spaces;  in pci_dt_probe()
131 	data = (fdt32_t *)prop->data;  in pci_dt_probe()
132 	as = &host->addr_space[0];  in pci_dt_probe()
146 		as->type = of_flags_to_pci_type(fdt32_to_cpu(data[0]));  in pci_dt_probe()
147 		as->pci_start = ((u64)fdt32_to_cpu(data[1]) << 32) |  in pci_dt_probe()
151 			as->start = fdt32_to_cpu(data[3]);  in pci_dt_probe()
152 			as->size  = ((u64)fdt32_to_cpu(data[4]) << 32) |  in pci_dt_probe()
155 			as->start = ((u64)fdt32_to_cpu(data[3]) << 32) |  in pci_dt_probe()
157 			as->size  = ((u64)fdt32_to_cpu(data[5]) << 32) |  in pci_dt_probe()
171 	struct pci_addr_space *as = &host->addr_space[0];  in pci_alloc_resource()
187 	for (i = 0; i < host->nr_addr_spaces; i++) {  in pci_alloc_resource()
188 		if (as->type == type)  in pci_alloc_resource()
193 	if (i >= host->nr_addr_spaces) {  in pci_alloc_resource()
202 	pci_addr = ALIGN(as->pci_start + as->allocated, size);  in pci_alloc_resource()
203 	size += pci_addr - (as->pci_start + as->allocated);  in pci_alloc_resource()
204 	assert(as->allocated + size <= as->size);  in pci_alloc_resource()
206 	as->allocated += size;  in pci_alloc_resource()
230 		/* We are only interested in normal PCI devices */  in pci_probe()
267 	struct pci_addr_space *as = &host->addr_space[0];  in pci_host_bridge_get_paddr()
270 	for (i = 0; i < host->nr_addr_spaces; i++) {  in pci_host_bridge_get_paddr()
271 		if (pci_addr >= as->pci_start &&  in pci_host_bridge_get_paddr()
272 		    pci_addr < as->pci_start + as->size)  in pci_host_bridge_get_paddr()
273 			return as->start + (pci_addr - as->pci_start);  in pci_host_bridge_get_paddr()
282 	return host->start + (devfn << PCI_ECAM_DEVFN_SHIFT);  in pci_get_dev_conf()