diff options
author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /include/asm-arm/arch-shark/entry-macro.S |
Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'include/asm-arm/arch-shark/entry-macro.S')
-rw-r--r-- | include/asm-arm/arch-shark/entry-macro.S | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/include/asm-arm/arch-shark/entry-macro.S b/include/asm-arm/arch-shark/entry-macro.S new file mode 100644 index 00000000000..a924f27fb8d --- /dev/null +++ b/include/asm-arm/arch-shark/entry-macro.S @@ -0,0 +1,35 @@ +/* + * include/asm-arm/arch-shark/entry-macro.S + * + * Low-level IRQ helper macros for Shark platform + * + * This file is licensed under the terms of the GNU General Public + * License version 2. This program is licensed "as is" without any + * warranty of any kind, whether express or implied. + */ + .macro disable_fiq + .endm + + .macro get_irqnr_and_base, irqnr, irqstat, base, tmp + mov r4, #0xe0000000 + + mov \irqstat, #0x0C + strb \irqstat, [r4, #0x20] @outb(0x0C, 0x20) /* Poll command */ + ldrb \irqnr, [r4, #0x20] @irq = inb(0x20) & 7 + and \irqstat, \irqnr, #0x80 + teq \irqstat, #0 + beq 43f + and \irqnr, \irqnr, #7 + teq \irqnr, #2 + bne 44f +43: mov \irqstat, #0x0C + strb \irqstat, [r4, #0xa0] @outb(0x0C, 0xA0) /* Poll command */ + ldrb \irqnr, [r4, #0xa0] @irq = (inb(0xA0) & 7) + 8 + and \irqstat, \irqnr, #0x80 + teq \irqstat, #0 + beq 44f + and \irqnr, \irqnr, #7 + add \irqnr, \irqnr, #8 +44: teq \irqstat, #0 + .endm + |