2  * Copyright (c) 2003-2012 Broadcom Corporation
28  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
50 #include <asm/netlogic/mips-extns.h>
52 #include <asm/netlogic/xlp-hal/iomap.h>
53 #include <asm/netlogic/xlp-hal/xlp.h>
54 #include <asm/netlogic/xlp-hal/pic.h>
55 #include <asm/netlogic/xlp-hal/pcibus.h>
56 #include <asm/netlogic/xlp-hal/bridge.h>
60 #define pci_cfg_addr(bus, devfn, off) (((bus) << 20) | ((devfn) << 12) | (off))  argument
63 static inline u32 pci_cfg_read_32bit(struct pci_bus *bus, unsigned int devfn,  in pci_cfg_read_32bit()  argument
66 	u32 data;  in pci_cfg_read_32bit()  local
72 		if (bus->number == 0) {  in pci_cfg_read_32bit()
73 			/* Scan only existing nodes - uboot bug? */  in pci_cfg_read_32bit()
77 		} else if (bus->parent->number == 0) {	/* SoC bus */  in pci_cfg_read_32bit()
83 	} else if (bus->number == 0 && PCI_SLOT(devfn) == 1 && where == 0x954) {  in pci_cfg_read_32bit()
87 			pci_cfg_addr(bus->number, devfn, where));  in pci_cfg_read_32bit()
88 	data = *cfgaddr;  in pci_cfg_read_32bit()
89 	return data;  in pci_cfg_read_32bit()
92 static inline void pci_cfg_write_32bit(struct pci_bus *bus, unsigned int devfn,  in pci_cfg_write_32bit()  argument
93 	int where, u32 data)  in pci_cfg_write_32bit()  argument
98 			pci_cfg_addr(bus->number, devfn, where & ~3));  in pci_cfg_write_32bit()
99 	*cfgaddr = data;  in pci_cfg_write_32bit()
102 static int nlm_pcibios_read(struct pci_bus *bus, unsigned int devfn,  in nlm_pcibios_read()  argument
105 	u32 data;  in nlm_pcibios_read()  local
112 	data = pci_cfg_read_32bit(bus, devfn, where);  in nlm_pcibios_read()
115 		*val = (data >> ((where & 3) << 3)) & 0xff;  in nlm_pcibios_read()
117 		*val = (data >> ((where & 3) << 3)) & 0xffff;  in nlm_pcibios_read()
119 		*val = data;  in nlm_pcibios_read()
125 static int nlm_pcibios_write(struct pci_bus *bus, unsigned int devfn,  in nlm_pcibios_write()  argument
128 	u32 data;  in nlm_pcibios_write()  local
135 	data = pci_cfg_read_32bit(bus, devfn, where);  in nlm_pcibios_write()
138 		data = (data & ~(0xff << ((where & 3) << 3))) |  in nlm_pcibios_write()
141 		data = (data & ~(0xffff << ((where & 3) << 3))) |  in nlm_pcibios_write()
144 		data = val;  in nlm_pcibios_write()
146 	pci_cfg_write_32bit(bus, devfn, where, data);  in nlm_pcibios_write()
181 	struct pci_bus *bus, *p;  in xlp_get_pcie_link()  local
183 	bus = dev->bus;  in xlp_get_pcie_link()
186 		/* find bus with grand parent number == 0 */  in xlp_get_pcie_link()
187 		for (p = bus->parent; p && p->parent && p->parent->number != 0;  in xlp_get_pcie_link()
188 				p = p->parent)  in xlp_get_pcie_link()
189 			bus = p;  in xlp_get_pcie_link()
190 		return (p && p->parent) ? bus->self : NULL;  in xlp_get_pcie_link()
192 		/* Find the bridge on bus 0 */  in xlp_get_pcie_link()
193 		for (p = bus->parent; p && p->number != 0; p = p->parent)  in xlp_get_pcie_link()
194 			bus = p;  in xlp_get_pcie_link()
196 		return p ? bus->self : NULL;  in xlp_get_pcie_link()
203 		return PCI_FUNC(lnkdev->bus->self->devfn);  in xlp_socdev_to_node()
205 		return PCI_SLOT(lnkdev->devfn) / 8;  in xlp_socdev_to_node()
221 	lnkfunc = PCI_FUNC(lnkdev->devfn);  in pcibios_map_irq()
234  * If big-endian, enable hardware byteswap on the PCIe bridges.
285 /* Swap configuration not needed in little-endian mode */
314 			/* put in intpin and irq - u-boot does not */  in pcibios_init()
319 			pr_info("XLP PCIe: Link %d-%d initialized.\n", n, link);  in pcibios_init()