Linux-2.6.12-rc2v2.6.12-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!

1 files changed, 119 insertions, 0 deletions

diff --git a/include/asm-arm/arch-s3c2410/entry-macro.S b/include/asm-arm/arch-s3c2410/entry-macro.S
new file mode 100644
index 000000000000..b7d4d7f4422d
--- /dev/null
+++ b/include/asm-arm/arch-s3c2410/entry-macro.S
@@ -0,0 +1,119 @@
+/*
+ * include/asm-arm/arch-s3c2410/entry-macro.S
+ *
+ * Low-level IRQ helper macros for S3C2410-based platforms
+ *
+ * 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.
+
+ * Modifications:
+ *     10-Mar-2005 LCVR  Changed S3C2410_VA to S3C24XX_VA
+ */
+
+
+        .macro  get_irqnr_and_base, irqnr, irqstat, base, tmp
+
+                mov     \tmp, #S3C24XX_VA_IRQ
+                ldr     \irqnr, [ \tmp, #0x14 ]         @ get irq no
+30000:
+                teq     \irqnr, #4
+                teqne   \irqnr, #5
+                beq     1002f                           @ external irq reg
+
+                @ debug check to see if interrupt reported is the same
+                @ as the offset....
+
+                teq     \irqnr, #0
+                beq     20002f
+                ldr     \irqstat, [ \tmp, #0x10 ]       @ INTPND
+                mov     \irqstat, \irqstat, lsr \irqnr
+                tst     \irqstat, #1
+                bne     20002f
+
+                /* debug/warning if we get an invalud response from the
+                 * INTOFFSET register */
+#if 1
+                stmfd   r13!, { r0 - r4 , r8-r12, r14 }
+                ldr     r1,     [ \tmp, #0x14 ]         @ INTOFFSET
+                ldr     r2,     [ \tmp, #0x10 ]         @ INTPND
+                ldr     r3,     [ \tmp, #0x00 ]         @ SRCPND
+                adr     r0, 20003f
+                bl      printk
+                b       20004f
+
+20003:
+                .ascii  "<7>irq: err - bad offset %d, intpnd=%08x, srcpnd=%08x\n"
+                .byte   0
+                .align  4
+20004:
+                mov     r1, #1
+                mov     \tmp, #S3C24XX_VA_IRQ
+                ldmfd   r13!, { r0 - r4 , r8-r12, r14 }
+#endif
+
+                @ try working out interrupt number for ourselves
+                mov     \irqnr, #0
+                ldr     \irqstat, [ \tmp, #0x10 ]       @ INTPND
+10021:
+                movs    \irqstat, \irqstat, lsr#1
+                bcs     30000b          @ try and re-start the proccess
+                add     \irqnr, \irqnr, #1
+                cmp     \irqnr, #32
+                ble     10021b
+
+                @ found no interrupt, set Z flag and leave
+                movs    \irqnr, #0
+                b       1001f
+
+20005:
+20002:          @ exit
+                @ we base the s3c2410x interrupts at 16 and above to allow
+                @ isa peripherals to have their standard interrupts, also
+                @ ensure that Z flag is un-set on exit
+
+                @ note, we cannot be sure if we get IRQ_EINT0 (0) that
+                @ there is simply no interrupt pending, so in all other
+                @ cases we jump to say we have found something, otherwise
+                @ we check to see if the interrupt really is assrted
+                adds    \irqnr, \irqnr, #IRQ_EINT0
+                teq     \irqnr, #IRQ_EINT0
+                bne     1001f                           @ exit
+                ldr     \irqstat, [ \tmp, #0x10 ]       @ INTPND
+                teq     \irqstat, #0
+                moveq   \irqnr, #0
+                b       1001f
+
+                @ we get here from no main or external interrupts pending
+1002:
+                add     \tmp, \tmp, #S3C24XX_VA_GPIO - S3C24XX_VA_IRQ
+                ldr     \irqstat, [ \tmp, # 0xa8 ]      @ EXTINTPEND
+                ldr     \irqnr, [ \tmp, # 0xa4 ]        @ EXTINTMASK
+
+                bic     \irqstat, \irqstat, \irqnr      @ clear masked irqs
+
+                mov     \irqnr, #IRQ_EINT4              @ start extint nos
+                mov     \irqstat, \irqstat, lsr#4       @ ignore bottom 4 bits
+10021:
+                movs    \irqstat, \irqstat, lsr#1
+                bcs     1004f
+                add     \irqnr, \irqnr, #1
+                cmp     \irqnr, #IRQ_EINT23
+                ble     10021b
+
+                @ found no interrupt, set Z flag and leave
+                movs    \irqnr, #0
+
+1004:           @ ensure Z flag clear in case our MOVS shifted out the last bit
+                teq     \irqnr, #0
+1001:
+                @ exit irq routine
+                .endm
+
+
+                /* currently don't need an disable_fiq macro */
+
+                .macro  disable_fiq
+                .endm
+
+