projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| b6d7b666 PM |
1 | /* |
| 2 | * Support functions for the SH5 PCI hardware. | |
| 3 | * | |
| 4 | * Copyright (C) 2001 David J. Mckay (david.mckay@st.com) | |
| 5 | * Copyright (C) 2003, 2004 Paul Mundt | |
| 6 | * Copyright (C) 2004 Richard Curnow | |
| 7 | * | |
| 8 | * May be copied or modified under the terms of the GNU General Public | |
| 9 | * License. See linux/COPYING for more information. | |
| 10 | */ | |
| 11 | #include <linux/kernel.h> | |
| 12 | #include <linux/rwsem.h> | |
| 13 | #include <linux/smp.h> | |
| 14 | #include <linux/interrupt.h> | |
| 15 | #include <linux/init.h> | |
| 16 | #include <linux/errno.h> | |
| 17 | #include <linux/pci.h> | |
| 18 | #include <linux/delay.h> | |
| 19 | #include <linux/types.h> | |
| 20 | #include <linux/irq.h> | |
| b6d7b666 PM |
21 | #include <asm/io.h> |
| 22 | #include "pci-sh5.h" | |
| 23 | ||
| b6d7b666 PM |
24 | static int sh5pci_read(struct pci_bus *bus, unsigned int devfn, int where, |
| 25 | int size, u32 *val) | |
| 26 | { | |
| 27 | SH5PCI_WRITE(PAR, CONFIG_CMD(bus, devfn, where)); | |
| 28 | ||
| 29 | switch (size) { | |
| 30 | case 1: | |
| 31 | *val = (u8)SH5PCI_READ_BYTE(PDR + (where & 3)); | |
| 32 | break; | |
| 33 | case 2: | |
| 34 | *val = (u16)SH5PCI_READ_SHORT(PDR + (where & 2)); | |
| 35 | break; | |
| 36 | case 4: | |
| 37 | *val = SH5PCI_READ(PDR); | |
| 38 | break; | |
| 39 | } | |
| 40 | ||
| 41 | return PCIBIOS_SUCCESSFUL; | |
| 42 | } | |
| 43 | ||
| 44 | static int sh5pci_write(struct pci_bus *bus, unsigned int devfn, int where, | |
| 45 | int size, u32 val) | |
| 46 | { | |
| 47 | SH5PCI_WRITE(PAR, CONFIG_CMD(bus, devfn, where)); | |
| 48 | ||
| 49 | switch (size) { | |
| 50 | case 1: | |
| 51 | SH5PCI_WRITE_BYTE(PDR + (where & 3), (u8)val); | |
| 52 | break; | |
| 53 | case 2: | |
| 54 | SH5PCI_WRITE_SHORT(PDR + (where & 2), (u16)val); | |
| 55 | break; | |
| 56 | case 4: | |
| 57 | SH5PCI_WRITE(PDR, val); | |
| 58 | break; | |
| 59 | } | |
| 60 | ||
| 61 | return PCIBIOS_SUCCESSFUL; | |
| 62 | } | |
| 63 | ||
| 64 | struct pci_ops sh5_pci_ops = { | |
| 65 | .read = sh5pci_read, | |
| 66 | .write = sh5pci_write, | |
| 67 | }; |