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| author | Arnd Bergmann <arnd@arndb.de> | 2021-11-29 16:43:14 +0300 |
|---|---|---|
| committer | Ard Biesheuvel <ardb@kernel.org> | 2021-12-06 14:48:47 +0300 |
| commit | 90890f17ccd2aa96350abd1f4d37d4667e09027f (patch) | |
| tree | 81eedd1028998839afa7984bf552e5a9f56c806c /arch/arm/mach-footbridge/include/mach/entry-macro.S | |
| parent | c1fe8d054c0a8b0ff0406dcc0ddc6c55e1cfddbc (diff) | |
| download | linux-90890f17ccd2aa96350abd1f4d37d4667e09027f.tar.xz | |
ARM: footbridge: use GENERIC_IRQ_MULTI_HANDLER
Footbridge still uses the classic IRQ entry path in assembler,
but this is easily converted into an equivalent C version.
In this case, the correlation between IRQ numbers and bits in
the status register is non-obvious, and the priorities are
handled by manually checking each bit in a static order,
re-reading the status register after each handled event.
I moved the code into the new file and edited the syntax without
changing this sequence to keep the behavior as close as possible
to what it traditionally did.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Tested-by: Marc Zyngier <maz@kernel.org>
Tested-by: Vladimir Murzin <vladimir.murzin@arm.com> # ARMv7M
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'arch/arm/mach-footbridge/include/mach/entry-macro.S')
| -rw-r--r-- | arch/arm/mach-footbridge/include/mach/entry-macro.S | 107 |
1 files changed, 0 insertions, 107 deletions
diff --git a/arch/arm/mach-footbridge/include/mach/entry-macro.S b/arch/arm/mach-footbridge/include/mach/entry-macro.S deleted file mode 100644 index dabbd5c54a78..000000000000 --- a/arch/arm/mach-footbridge/include/mach/entry-macro.S +++ /dev/null @@ -1,107 +0,0 @@ -/* - * arch/arm/mach-footbridge/include/mach/entry-macro.S - * - * Low-level IRQ helper macros for footbridge-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. - */ -#include <mach/hardware.h> -#include <mach/irqs.h> -#include <asm/hardware/dec21285.h> - - .equ dc21285_high, ARMCSR_BASE & 0xff000000 - .equ dc21285_low, ARMCSR_BASE & 0x00ffffff - - .macro get_irqnr_preamble, base, tmp - mov \base, #dc21285_high - .if dc21285_low - orr \base, \base, #dc21285_low - .endif - .endm - - .macro get_irqnr_and_base, irqnr, irqstat, base, tmp - ldr \irqstat, [\base, #0x180] @ get interrupts - - mov \irqnr, #IRQ_SDRAMPARITY - tst \irqstat, #IRQ_MASK_SDRAMPARITY - bne 1001f - - tst \irqstat, #IRQ_MASK_UART_RX - movne \irqnr, #IRQ_CONRX - bne 1001f - - tst \irqstat, #IRQ_MASK_DMA1 - movne \irqnr, #IRQ_DMA1 - bne 1001f - - tst \irqstat, #IRQ_MASK_DMA2 - movne \irqnr, #IRQ_DMA2 - bne 1001f - - tst \irqstat, #IRQ_MASK_IN0 - movne \irqnr, #IRQ_IN0 - bne 1001f - - tst \irqstat, #IRQ_MASK_IN1 - movne \irqnr, #IRQ_IN1 - bne 1001f - - tst \irqstat, #IRQ_MASK_IN2 - movne \irqnr, #IRQ_IN2 - bne 1001f - - tst \irqstat, #IRQ_MASK_IN3 - movne \irqnr, #IRQ_IN3 - bne 1001f - - tst \irqstat, #IRQ_MASK_PCI - movne \irqnr, #IRQ_PCI - bne 1001f - - tst \irqstat, #IRQ_MASK_DOORBELLHOST - movne \irqnr, #IRQ_DOORBELLHOST - bne 1001f - - tst \irqstat, #IRQ_MASK_I2OINPOST - movne \irqnr, #IRQ_I2OINPOST - bne 1001f - - tst \irqstat, #IRQ_MASK_TIMER1 - movne \irqnr, #IRQ_TIMER1 - bne 1001f - - tst \irqstat, #IRQ_MASK_TIMER2 - movne \irqnr, #IRQ_TIMER2 - bne 1001f - - tst \irqstat, #IRQ_MASK_TIMER3 - movne \irqnr, #IRQ_TIMER3 - bne 1001f - - tst \irqstat, #IRQ_MASK_UART_TX - movne \irqnr, #IRQ_CONTX - bne 1001f - - tst \irqstat, #IRQ_MASK_PCI_ABORT - movne \irqnr, #IRQ_PCI_ABORT - bne 1001f - - tst \irqstat, #IRQ_MASK_PCI_SERR - movne \irqnr, #IRQ_PCI_SERR - bne 1001f - - tst \irqstat, #IRQ_MASK_DISCARD_TIMER - movne \irqnr, #IRQ_DISCARD_TIMER - bne 1001f - - tst \irqstat, #IRQ_MASK_PCI_DPERR - movne \irqnr, #IRQ_PCI_DPERR - bne 1001f - - tst \irqstat, #IRQ_MASK_PCI_PERR - movne \irqnr, #IRQ_PCI_PERR -1001: - .endm - |