2  *  ops-vr41xx.c, PCI configuration routines for the PCIU of NEC VR4100 series.
4  *  Copyright (C) 2001-2003 MontaVista Software Inc.
6  *  Copyright (C) 2004-2005  Yoichi Yuasa <yuasa@linux-mips.org>
20  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
25  *  - New creation, NEC VR4122 and VR4131 are supported.
43 			return -EINVAL;  in set_pci_configuration_address()
52 			return -EINVAL;  in set_pci_configuration_address()
64 	uint32_t data;  in pci_config_read()  local
67 	if (set_pci_configuration_address(bus->number, devfn, where) < 0)  in pci_config_read()
70 	data = readl(PCICONFDREG);  in pci_config_read()
74 		*val = (data >> ((where & 3) << 3)) & 0xffU;  in pci_config_read()
77 		*val = (data >> ((where & 2) << 3)) & 0xffffU;  in pci_config_read()
80 		*val = data;  in pci_config_read()
92 	uint32_t data;  in pci_config_write()  local
93 	int shift;  in pci_config_write()  local
95 	if (set_pci_configuration_address(bus->number, devfn, where) < 0)  in pci_config_write()
98 	data = readl(PCICONFDREG);  in pci_config_write()
102 		shift = (where & 3) << 3;  in pci_config_write()
103 		data &= ~(0xffU << shift);  in pci_config_write()
104 		data |= ((val & 0xffU) << shift);  in pci_config_write()
107 		shift = (where & 2) << 3;  in pci_config_write()
108 		data &= ~(0xffffU << shift);  in pci_config_write()
109 		data |= ((val & 0xffffU) << shift);  in pci_config_write()
112 		data = val;  in pci_config_write()
118 	writel(data, PCICONFDREG);  in pci_config_write()