| /* |
| * arch/arm/mach-lh7a40x/include/mach/entry-macro.S |
| * |
| * Low-level IRQ helper macros for LH7A40x 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. |
| */ |
| #include <mach/hardware.h> |
| #include <mach/irqs.h> |
| |
| /* In order to allow there to be support for both of the processor |
| classes at the same time, we make a hack here that isn't very |
| pretty. At startup, the link pointed to with the |
| branch_irq_lh7a400 symbol is replaced with a NOP when the CPU is |
| detected as a lh7a404. |
| |
| *** FIXME: we should clean this up so that there is only one |
| implementation for each CPU's design. |
| |
| */ |
| |
| #if defined (CONFIG_ARCH_LH7A400) && defined (CONFIG_ARCH_LH7A404) |
| |
| .macro disable_fiq |
| .endm |
| |
| .macro get_irqnr_preamble, base, tmp |
| .endm |
| |
| .macro arch_ret_to_user, tmp1, tmp2 |
| .endm |
| |
| .macro get_irqnr_and_base, irqnr, irqstat, base, tmp |
| |
| branch_irq_lh7a400: b 1000f |
| |
| @ Implementation of the LH7A404 get_irqnr_and_base. |
| |
| mov \irqnr, #0 @ VIC1 irq base |
| mov \base, #io_p2v(0x80000000) @ APB registers |
| add \base, \base, #0x8000 |
| ldr \tmp, [\base, #0x0030] @ VIC1_VECTADDR |
| tst \tmp, #VA_VECTORED @ Direct vectored |
| bne 1002f |
| tst \tmp, #VA_VIC1DEFAULT @ Default vectored VIC1 |
| ldrne \irqstat, [\base, #0] @ VIC1_IRQSTATUS |
| bne 1001f |
| add \base, \base, #(0xa000 - 0x8000) |
| ldr \tmp, [\base, #0x0030] @ VIC2_VECTADDR |
| tst \tmp, #VA_VECTORED @ Direct vectored |
| bne 1002f |
| ldr \irqstat, [\base, #0] @ VIC2_IRQSTATUS |
| mov \irqnr, #32 @ VIC2 irq base |
| |
| 1001: movs \irqstat, \irqstat, lsr #1 @ Shift into carry |
| bcs 1008f @ Bit set; irq found |
| add \irqnr, \irqnr, #1 |
| bne 1001b @ Until no bits |
| b 1009f @ Nothing? Hmm. |
| 1002: and \irqnr, \tmp, #0x3f @ Mask for valid bits |
| 1008: movs \irqstat, #1 @ Force !Z |
| str \tmp, [\base, #0x0030] @ Clear vector |
| b 1009f |
| |
| @ Implementation of the LH7A400 get_irqnr_and_base. |
| |
| 1000: mov \irqnr, #0 |
| mov \base, #io_p2v(0x80000000) @ APB registers |
| ldr \irqstat, [\base, #0x500] @ PIC INTSR |
| |
| 1001: movs \irqstat, \irqstat, lsr #1 @ Shift into carry |
| bcs 1008f @ Bit set; irq found |
| add \irqnr, \irqnr, #1 |
| bne 1001b @ Until no bits |
| b 1009f @ Nothing? Hmm. |
| 1008: movs \irqstat, #1 @ Force !Z |
| |
| 1009: |
| .endm |
| |
| |
| |
| #elif defined (CONFIG_ARCH_LH7A400) |
| .macro disable_fiq |
| .endm |
| |
| .macro get_irqnr_preamble, base, tmp |
| .endm |
| |
| .macro arch_ret_to_user, tmp1, tmp2 |
| .endm |
| |
| .macro get_irqnr_and_base, irqnr, irqstat, base, tmp |
| mov \irqnr, #0 |
| mov \base, #io_p2v(0x80000000) @ APB registers |
| ldr \irqstat, [\base, #0x500] @ PIC INTSR |
| |
| 1001: movs \irqstat, \irqstat, lsr #1 @ Shift into carry |
| bcs 1008f @ Bit set; irq found |
| add \irqnr, \irqnr, #1 |
| bne 1001b @ Until no bits |
| b 1009f @ Nothing? Hmm. |
| 1008: movs \irqstat, #1 @ Force !Z |
| 1009: |
| .endm |
| |
| #elif defined(CONFIG_ARCH_LH7A404) |
| |
| .macro disable_fiq |
| .endm |
| |
| .macro get_irqnr_preamble, base, tmp |
| .endm |
| |
| .macro arch_ret_to_user, tmp1, tmp2 |
| .endm |
| |
| .macro get_irqnr_and_base, irqnr, irqstat, base, tmp |
| mov \irqnr, #0 @ VIC1 irq base |
| mov \base, #io_p2v(0x80000000) @ APB registers |
| add \base, \base, #0x8000 |
| ldr \tmp, [\base, #0x0030] @ VIC1_VECTADDR |
| tst \tmp, #VA_VECTORED @ Direct vectored |
| bne 1002f |
| tst \tmp, #VA_VIC1DEFAULT @ Default vectored VIC1 |
| ldrne \irqstat, [\base, #0] @ VIC1_IRQSTATUS |
| bne 1001f |
| add \base, \base, #(0xa000 - 0x8000) |
| ldr \tmp, [\base, #0x0030] @ VIC2_VECTADDR |
| tst \tmp, #VA_VECTORED @ Direct vectored |
| bne 1002f |
| ldr \irqstat, [\base, #0] @ VIC2_IRQSTATUS |
| mov \irqnr, #32 @ VIC2 irq base |
| |
| 1001: movs \irqstat, \irqstat, lsr #1 @ Shift into carry |
| bcs 1008f @ Bit set; irq found |
| add \irqnr, \irqnr, #1 |
| bne 1001b @ Until no bits |
| b 1009f @ Nothing? Hmm. |
| 1002: and \irqnr, \tmp, #0x3f @ Mask for valid bits |
| 1008: movs \irqstat, #1 @ Force !Z |
| str \tmp, [\base, #0x0030] @ Clear vector |
| 1009: |
| .endm |
| #endif |
| |
| |
