diff options
Diffstat (limited to 'target/linux/rb532/files/arch/mips/pci/ops-rc32434.c')
| -rw-r--r-- | target/linux/rb532/files/arch/mips/pci/ops-rc32434.c | 218 |
1 files changed, 0 insertions, 218 deletions
diff --git a/target/linux/rb532/files/arch/mips/pci/ops-rc32434.c b/target/linux/rb532/files/arch/mips/pci/ops-rc32434.c deleted file mode 100644 index b90ab1d12..000000000 --- a/target/linux/rb532/files/arch/mips/pci/ops-rc32434.c +++ /dev/null @@ -1,218 +0,0 @@ -/************************************************************************** - * - * BRIEF MODULE DESCRIPTION - * pci_ops for IDT EB434 board - * - * Copyright 2004 IDT Inc. (rischelp@idt.com) - * Copyright 2006 Felix Fietkau <nbd@openwrt.org> - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the - * Free Software Foundation; either version 2 of the License, or (at your - * option) any later version. - * - * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED - * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF - * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN - * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, - * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT - * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF - * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON - * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF - * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 675 Mass Ave, Cambridge, MA 02139, USA. - * - * - ************************************************************************** - * May 2004 rkt, neb - * - * Initial Release - * - * - * - ************************************************************************** - */ - -#include <linux/autoconf.h> -#include <linux/init.h> -#include <linux/pci.h> -#include <linux/types.h> -#include <linux/delay.h> - -#include <asm/cpu.h> -#include <asm/io.h> - -#include <asm/rc32434/rc32434.h> -#include <asm/rc32434/pci.h> - -#define PCI_ACCESS_READ 0 -#define PCI_ACCESS_WRITE 1 - - -#define PCI_CFG_SET(bus,slot,func,off) \ - (rc32434_pci->pcicfga = (0x80000000 | \ - ((bus) << 16) | ((slot)<<11) | \ - ((func)<<8) | (off))) - -static inline int config_access(unsigned char access_type, struct pci_bus *bus, - unsigned int devfn, unsigned char where, - u32 * data) -{ - unsigned int slot = PCI_SLOT(devfn); - u8 func = PCI_FUNC(devfn); - - /* Setup address */ - PCI_CFG_SET(bus->number, slot, func, where); - rc32434_sync(); - - if (access_type == PCI_ACCESS_WRITE) - rc32434_pci->pcicfgd = *data; - else - *data = rc32434_pci->pcicfgd; - - rc32434_sync(); - - return 0; -} - - -/* - * We can't address 8 and 16 bit words directly. Instead we have to - * read/write a 32bit word and mask/modify the data we actually want. - */ -static int read_config_byte(struct pci_bus *bus, unsigned int devfn, - int where, u8 * val) -{ - u32 data; - int ret; - - ret = config_access(PCI_ACCESS_READ, bus, devfn, where, &data); - *val = (data >> ((where & 3) << 3)) & 0xff; - return ret; -} - -static int read_config_word(struct pci_bus *bus, unsigned int devfn, - int where, u16 * val) -{ - u32 data; - int ret; - - ret = config_access(PCI_ACCESS_READ, bus, devfn, where, &data); - *val = (data >> ((where & 3) << 3)) & 0xffff; - return ret; -} - -static int read_config_dword(struct pci_bus *bus, unsigned int devfn, - int where, u32 * val) -{ - int ret; - int delay = 1; - - if (bus->number == 0 && PCI_SLOT(devfn) > 21) - return 0; - -retry: - ret = config_access(PCI_ACCESS_READ, bus, devfn, where, val); - - /* PCI scan: check for invalid values, device may not have - * finished initializing */ - - if (where == PCI_VENDOR_ID) { - if (ret == 0xffffffff || ret == 0x00000000 || - ret == 0x0000ffff || ret == 0xffff0000) { - - if (delay > 4) - return 0; - - delay *= 2; - msleep(delay); - goto retry; - } - } - - return ret; -} - -static int -write_config_byte(struct pci_bus *bus, unsigned int devfn, int where, - u8 val) -{ - u32 data = 0; - - if (config_access(PCI_ACCESS_READ, bus, devfn, where, &data)) - return -1; - - data = (data & ~(0xff << ((where & 3) << 3))) | - (val << ((where & 3) << 3)); - - if (config_access(PCI_ACCESS_WRITE, bus, devfn, where, &data)) - return -1; - - return PCIBIOS_SUCCESSFUL; -} - - -static int -write_config_word(struct pci_bus *bus, unsigned int devfn, int where, - u16 val) -{ - u32 data = 0; - - if (config_access(PCI_ACCESS_READ, bus, devfn, where, &data)) - return -1; - - data = (data & ~(0xffff << ((where & 3) << 3))) | - (val << ((where & 3) << 3)); - - if (config_access(PCI_ACCESS_WRITE, bus, devfn, where, &data)) - return -1; - - - return PCIBIOS_SUCCESSFUL; -} - - -static int -write_config_dword(struct pci_bus *bus, unsigned int devfn, int where, - u32 val) -{ - if (config_access(PCI_ACCESS_WRITE, bus, devfn, where, &val)) - return -1; - - return PCIBIOS_SUCCESSFUL; -} - -static int pci_config_read(struct pci_bus *bus, unsigned int devfn, - int where, int size, u32 * val) -{ - switch (size) { - case 1: - return read_config_byte(bus, devfn, where, (u8 *) val); - case 2: - return read_config_word(bus, devfn, where, (u16 *) val); - default: - return read_config_dword(bus, devfn, where, val); - } -} - -static int pci_config_write(struct pci_bus *bus, unsigned int devfn, - int where, int size, u32 val) -{ - switch (size) { - case 1: - return write_config_byte(bus, devfn, where, (u8) val); - case 2: - return write_config_word(bus, devfn, where, (u16) val); - default: - return write_config_dword(bus, devfn, where, val); - } -} - -struct pci_ops rc32434_pci_ops = { - .read = pci_config_read, - .write = pci_config_write, -}; |