add ip1811 driver

hc

2023-11-22 9ca5fbcb63a8dcaee0527f96afb91dc4b4bd8fa9

 kernel/arch/powerpc/kernel/entry_32.S
..
..
@@ -393,7 +393,9 @@
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 	MTMSRD(r10)
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 	lwz	r9,TI_FLAGS(r12)
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 	li	r8,-MAX_ERRNO
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-	andi.	r0,r9,(_TIF_SYSCALL_DOTRACE|_TIF_SINGLESTEP|_TIF_USER_WORK_MASK|_TIF_PERSYSCALL_MASK)
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+	lis	r0,(_TIF_SYSCALL_DOTRACE|_TIF_SINGLESTEP|_TIF_USER_WORK_MASK|_TIF_PERSYSCALL_MASK)@h
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+	ori	r0,r0, (_TIF_SYSCALL_DOTRACE|_TIF_SINGLESTEP|_TIF_USER_WORK_MASK|_TIF_PERSYSCALL_MASK)@l
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+	and.	r0,r9,r0
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 	bne-	syscall_exit_work
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 	cmplw	0,r3,r8
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 	blt+	syscall_exit_cont
..
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@@ -511,13 +513,13 @@
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 	b	syscall_dotrace_cont
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 syscall_exit_work:
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-	andi.	r0,r9,_TIF_RESTOREALL
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+	andis.	r0,r9,_TIF_RESTOREALL@h
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 	beq+	0f
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 	REST_NVGPRS(r1)
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 	b	2f
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 0:	cmplw	0,r3,r8
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 	blt+	1f
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-	andi.	r0,r9,_TIF_NOERROR
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+	andis.	r0,r9,_TIF_NOERROR@h
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 	bne-	1f
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 	lwz	r11,_CCR(r1)			/* Load CR */
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 	neg	r3,r3
..
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@@ -526,12 +528,12 @@
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 1:	stw	r6,RESULT(r1)	/* Save result */
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 	stw	r3,GPR3(r1)	/* Update return value */
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-2:	andi.	r0,r9,(_TIF_PERSYSCALL_MASK)
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+2:	andis.	r0,r9,(_TIF_PERSYSCALL_MASK)@h
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 	beq	4f
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 	/* Clear per-syscall TIF flags if any are set.  */
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-	li	r11,_TIF_PERSYSCALL_MASK
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+	lis	r11,_TIF_PERSYSCALL_MASK@h
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 	addi	r12,r12,TI_FLAGS
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 3:	lwarx	r8,0,r12
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 	andc	r8,r8,r11
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@@ -888,7 +890,14 @@
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 	cmpwi	0,r0,0		/* if non-zero, just restore regs and return */
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 	bne	restore
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 	andi.	r8,r8,_TIF_NEED_RESCHED
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+	bne+	1f
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+	lwz	r0,TI_PREEMPT_LAZY(r9)
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+	cmpwi	0,r0,0		/* if non-zero, just restore regs and return */
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+	bne	restore
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+	lwz	r0,TI_FLAGS(r9)
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+	andi.	r0,r0,_TIF_NEED_RESCHED_LAZY
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 	beq+	restore
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+1:
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 	lwz	r3,_MSR(r1)
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 	andi.	r0,r3,MSR_EE	/* interrupts off? */
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 	beq	restore		/* don't schedule if so */
..
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@@ -899,11 +908,11 @@
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 	 */
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 	bl	trace_hardirqs_off
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 #endif
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-1:	bl	preempt_schedule_irq
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+2:	bl	preempt_schedule_irq
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 	CURRENT_THREAD_INFO(r9, r1)
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 	lwz	r3,TI_FLAGS(r9)
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-	andi.	r0,r3,_TIF_NEED_RESCHED
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-	bne-	1b
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+	andi.	r0,r3,_TIF_NEED_RESCHED_MASK
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+	bne-	2b
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 #ifdef CONFIG_TRACE_IRQFLAGS
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 	/* And now, to properly rebalance the above, we tell lockdep they
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 	 * are being turned back on, which will happen when we return
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@@ -1232,7 +1241,7 @@
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 #endif /* !(CONFIG_4xx || CONFIG_BOOKE) */
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 do_work:			/* r10 contains MSR_KERNEL here */
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-	andi.	r0,r9,_TIF_NEED_RESCHED
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+	andi.	r0,r9,_TIF_NEED_RESCHED_MASK
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 	beq	do_user_signal
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 do_resched:			/* r10 contains MSR_KERNEL here */
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@@ -1253,7 +1262,7 @@
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 	MTMSRD(r10)		/* disable interrupts */
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 	CURRENT_THREAD_INFO(r9, r1)
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 	lwz	r9,TI_FLAGS(r9)
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-	andi.	r0,r9,_TIF_NEED_RESCHED
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+	andi.	r0,r9,_TIF_NEED_RESCHED_MASK
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 	bne-	do_resched
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 	andi.	r0,r9,_TIF_USER_WORK_MASK
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 	beq	restore_user