android_kernel_xiaomi_sm8350/include/asm-arm/arch-sa1100/entry-macro.S

/*
 * include/asm-arm/arch-sa1100/entry-macro.S
 *
 * Low-level IRQ helper macros for SA1100-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.
 */

 		.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	r4, #0xfa000000			@ ICIP = 0xfa050000
		add	r4, r4, #0x00050000
		ldr	\irqstat, [r4]			@ get irqs
		ldr	\irqnr, [r4, #4]		@ ICMR = 0xfa050004
		ands	\irqstat, \irqstat, \irqnr
		mov	\irqnr, #0
		beq	1001f
		tst	\irqstat, #0xff
		moveq	\irqstat, \irqstat, lsr #8
		addeq	\irqnr, \irqnr, #8
		tsteq	\irqstat, #0xff
		moveq	\irqstat, \irqstat, lsr #8
		addeq	\irqnr, \irqnr, #8
		tsteq	\irqstat, #0xff
		moveq	\irqstat, \irqstat, lsr #8
		addeq	\irqnr, \irqnr, #8
		tst	\irqstat, #0x0f
		moveq	\irqstat, \irqstat, lsr #4
		addeq	\irqnr, \irqnr, #4
		tst	\irqstat, #0x03
		moveq	\irqstat, \irqstat, lsr #2
		addeq	\irqnr, \irqnr, #2
		tst	\irqstat, #0x01
		addeqs	\irqnr, \irqnr, #1
1001:
		.endm
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! 2005-04-16 18:20:36 -04:00			`/*`
			`* include/asm-arm/arch-sa1100/entry-macro.S`
			`*`
			`* Low-level IRQ helper macros for SA1100-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.`
			`*/`

			`.macro disable_fiq`
			`.endm`

[ARM] 4185/2: entry: introduce get_irqnr_preamble and arch_ret_to_user get_irqnr_preamble allows machines to take some action before entering the get_irqnr_and_base loop. On iop we enable cp6 access. arch_ret_to_user is added to the userspace return path to allow individual architectures to take actions, like disabling coprocessor access, before the final return to userspace. Per Nicolas Pitre's note, there is no need to cp_wait on the return to user as the latency to return is sufficient. Signed-off-by: Dan Williams <dan.j.williams@intel.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> 2007-02-16 16:16:32 -05:00			`.macro get_irqnr_preamble, base, tmp`
			`.endm`

			`.macro arch_ret_to_user, tmp1, tmp2`
			`.endm`

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! 2005-04-16 18:20:36 -04:00			`.macro get_irqnr_and_base, irqnr, irqstat, base, tmp`
			`mov r4, #0xfa000000 @ ICIP = 0xfa050000`
			`add r4, r4, #0x00050000`
			`ldr \irqstat, [r4] @ get irqs`
			`ldr \irqnr, [r4, #4] @ ICMR = 0xfa050004`
			`ands \irqstat, \irqstat, \irqnr`
			`mov \irqnr, #0`
			`beq 1001f`
			`tst \irqstat, #0xff`
			`moveq \irqstat, \irqstat, lsr #8`
			`addeq \irqnr, \irqnr, #8`
			`tsteq \irqstat, #0xff`
			`moveq \irqstat, \irqstat, lsr #8`
			`addeq \irqnr, \irqnr, #8`
			`tsteq \irqstat, #0xff`
			`moveq \irqstat, \irqstat, lsr #8`
			`addeq \irqnr, \irqnr, #8`
			`tst \irqstat, #0x0f`
			`moveq \irqstat, \irqstat, lsr #4`
			`addeq \irqnr, \irqnr, #4`
			`tst \irqstat, #0x03`
			`moveq \irqstat, \irqstat, lsr #2`
			`addeq \irqnr, \irqnr, #2`
			`tst \irqstat, #0x01`
			`addeqs \irqnr, \irqnr, #1`
			`1001:`
			`.endm`