Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   1) /* SPDX-License-Identifier: GPL-2.0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   2) /* sun4v_ivec.S: Sun4v interrupt vector handling.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   3)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4)  * Copyright (C) 2006 <davem@davemloft.net>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7) #include <asm/cpudata.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8) #include <asm/intr_queue.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9) #include <asm/pil.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11) 	.text
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12) 	.align	32
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14) sun4v_cpu_mondo:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15) 	/* Head offset in %g2, tail offset in %g4.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16) 	 * If they are the same, no work.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18) 	mov	INTRQ_CPU_MONDO_HEAD, %g2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19) 	ldxa	[%g2] ASI_QUEUE, %g2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20) 	mov	INTRQ_CPU_MONDO_TAIL, %g4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21) 	ldxa	[%g4] ASI_QUEUE, %g4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) 	cmp	%g2, %g4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) 	be,pn	%xcc, sun4v_cpu_mondo_queue_empty
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) 	 nop
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) 	/* Get &trap_block[smp_processor_id()] into %g4.  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) 	ldxa	[%g0] ASI_SCRATCHPAD, %g4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) 	sub	%g4, TRAP_PER_CPU_FAULT_INFO, %g4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) 	/* Get smp_processor_id() into %g3 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) 	sethi	%hi(trap_block), %g5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) 	or	%g5, %lo(trap_block), %g5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) 	sub	%g4, %g5, %g3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) 	srlx	%g3, TRAP_BLOCK_SZ_SHIFT, %g3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) 	/* Increment cpu_mondo_counter[smp_processor_id()] */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) 	sethi	%hi(cpu_mondo_counter), %g5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) 	or	%g5, %lo(cpu_mondo_counter), %g5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) 	sllx	%g3, 3, %g3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) 	add	%g5, %g3, %g5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) 	ldx	[%g5], %g3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) 	add	%g3, 1, %g3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) 	stx	%g3, [%g5]
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) 	/* Get CPU mondo queue base phys address into %g7.  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) 	ldx	[%g4 + TRAP_PER_CPU_CPU_MONDO_PA], %g7
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) 	/* Now get the cross-call arguments and handler PC, same
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) 	 * layout as sun4u:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) 	 *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) 	 * 1st 64-bit word: low half is 32-bit PC, put into %g3 and jmpl to it
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) 	 *                  high half is context arg to MMU flushes, into %g5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) 	 * 2nd 64-bit word: 64-bit arg, load into %g1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) 	 * 3rd 64-bit word: 64-bit arg, load into %g7
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) 	ldxa	[%g7 + %g2] ASI_PHYS_USE_EC, %g3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) 	add	%g2, 0x8, %g2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) 	srlx	%g3, 32, %g5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) 	ldxa	[%g7 + %g2] ASI_PHYS_USE_EC, %g1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) 	add	%g2, 0x8, %g2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) 	srl	%g3, 0, %g3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) 	ldxa	[%g7 + %g2] ASI_PHYS_USE_EC, %g7
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) 	add	%g2, 0x40 - 0x8 - 0x8, %g2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) 	/* Update queue head pointer.  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) 	lduw	[%g4 + TRAP_PER_CPU_CPU_MONDO_QMASK], %g4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) 	and	%g2, %g4, %g2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) 	mov	INTRQ_CPU_MONDO_HEAD, %g4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) 	stxa	%g2, [%g4] ASI_QUEUE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) 	membar	#Sync
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) 	jmpl	%g3, %g0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) 	 nop
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) sun4v_cpu_mondo_queue_empty:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) 	retry
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) sun4v_dev_mondo:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) 	/* Head offset in %g2, tail offset in %g4.  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) 	mov	INTRQ_DEVICE_MONDO_HEAD, %g2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) 	ldxa	[%g2] ASI_QUEUE, %g2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) 	mov	INTRQ_DEVICE_MONDO_TAIL, %g4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) 	ldxa	[%g4] ASI_QUEUE, %g4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) 	cmp	%g2, %g4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) 	be,pn	%xcc, sun4v_dev_mondo_queue_empty
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) 	 nop
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) 	/* Get &trap_block[smp_processor_id()] into %g4.  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) 	ldxa	[%g0] ASI_SCRATCHPAD, %g4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) 	sub	%g4, TRAP_PER_CPU_FAULT_INFO, %g4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) 	/* Get DEV mondo queue base phys address into %g5.  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) 	ldx	[%g4 + TRAP_PER_CPU_DEV_MONDO_PA], %g5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) 	/* Load IVEC into %g3.  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) 	ldxa	[%g5 + %g2] ASI_PHYS_USE_EC, %g3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) 	add	%g2, 0x40, %g2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) 	/* XXX There can be a full 64-byte block of data here.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) 	 * XXX This is how we can get at MSI vector data.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) 	 * XXX Current we do not capture this, but when we do we'll
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) 	 * XXX need to add a 64-byte storage area in the struct ino_bucket
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) 	 * XXX or the struct irq_desc.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) 	/* Update queue head pointer, this frees up some registers.  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) 	lduw	[%g4 + TRAP_PER_CPU_DEV_MONDO_QMASK], %g4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) 	and	%g2, %g4, %g2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) 	mov	INTRQ_DEVICE_MONDO_HEAD, %g4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) 	stxa	%g2, [%g4] ASI_QUEUE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) 	membar	#Sync
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) 	TRAP_LOAD_IRQ_WORK_PA(%g1, %g4)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) 	/* For VIRQs, cookie is encoded as ~bucket_phys_addr  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) 	brlz,pt %g3, 1f
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) 	 xnor	%g3, %g0, %g4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) 	/* Get __pa(&ivector_table[IVEC]) into %g4.  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) 	sethi	%hi(ivector_table_pa), %g4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) 	ldx	[%g4 + %lo(ivector_table_pa)], %g4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) 	sllx	%g3, 4, %g3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) 	add	%g4, %g3, %g4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) 1:	ldx	[%g1], %g2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) 	stxa	%g2, [%g4] ASI_PHYS_USE_EC
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) 	stx	%g4, [%g1]
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) 	/* Signal the interrupt by setting (1 << pil) in %softint.  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) 	wr	%g0, 1 << PIL_DEVICE_IRQ, %set_softint
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) sun4v_dev_mondo_queue_empty:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) 	retry
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) sun4v_res_mondo:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) 	/* Head offset in %g2, tail offset in %g4.  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) 	mov	INTRQ_RESUM_MONDO_HEAD, %g2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) 	ldxa	[%g2] ASI_QUEUE, %g2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) 	mov	INTRQ_RESUM_MONDO_TAIL, %g4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) 	ldxa	[%g4] ASI_QUEUE, %g4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) 	cmp	%g2, %g4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) 	be,pn	%xcc, sun4v_res_mondo_queue_empty
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) 	 nop
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) 	/* Get &trap_block[smp_processor_id()] into %g3.  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) 	ldxa	[%g0] ASI_SCRATCHPAD, %g3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) 	sub	%g3, TRAP_PER_CPU_FAULT_INFO, %g3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) 	/* Get RES mondo queue base phys address into %g5.  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) 	ldx	[%g3 + TRAP_PER_CPU_RESUM_MONDO_PA], %g5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) 	/* Get RES kernel buffer base phys address into %g7.  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) 	ldx	[%g3 + TRAP_PER_CPU_RESUM_KBUF_PA], %g7
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) 	/* If the first word is non-zero, queue is full.  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) 	ldxa	[%g7 + %g2] ASI_PHYS_USE_EC, %g1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) 	brnz,pn	%g1, sun4v_res_mondo_queue_full
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) 	 nop
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) 	lduw	[%g3 + TRAP_PER_CPU_RESUM_QMASK], %g4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) 	/* Remember this entry's offset in %g1.  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) 	mov	%g2, %g1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) 	/* Copy 64-byte queue entry into kernel buffer.  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) 	ldxa	[%g5 + %g2] ASI_PHYS_USE_EC, %g3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) 	stxa	%g3, [%g7 + %g2] ASI_PHYS_USE_EC
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) 	add	%g2, 0x08, %g2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) 	ldxa	[%g5 + %g2] ASI_PHYS_USE_EC, %g3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) 	stxa	%g3, [%g7 + %g2] ASI_PHYS_USE_EC
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) 	add	%g2, 0x08, %g2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) 	ldxa	[%g5 + %g2] ASI_PHYS_USE_EC, %g3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) 	stxa	%g3, [%g7 + %g2] ASI_PHYS_USE_EC
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) 	add	%g2, 0x08, %g2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) 	ldxa	[%g5 + %g2] ASI_PHYS_USE_EC, %g3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) 	stxa	%g3, [%g7 + %g2] ASI_PHYS_USE_EC
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) 	add	%g2, 0x08, %g2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) 	ldxa	[%g5 + %g2] ASI_PHYS_USE_EC, %g3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) 	stxa	%g3, [%g7 + %g2] ASI_PHYS_USE_EC
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) 	add	%g2, 0x08, %g2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) 	ldxa	[%g5 + %g2] ASI_PHYS_USE_EC, %g3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) 	stxa	%g3, [%g7 + %g2] ASI_PHYS_USE_EC
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) 	add	%g2, 0x08, %g2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) 	ldxa	[%g5 + %g2] ASI_PHYS_USE_EC, %g3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) 	stxa	%g3, [%g7 + %g2] ASI_PHYS_USE_EC
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) 	add	%g2, 0x08, %g2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) 	ldxa	[%g5 + %g2] ASI_PHYS_USE_EC, %g3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) 	stxa	%g3, [%g7 + %g2] ASI_PHYS_USE_EC
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) 	add	%g2, 0x08, %g2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) 	/* Update queue head pointer.  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) 	and	%g2, %g4, %g2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) 	mov	INTRQ_RESUM_MONDO_HEAD, %g4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) 	stxa	%g2, [%g4] ASI_QUEUE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) 	membar	#Sync
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) 	/* Disable interrupts and save register state so we can call
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) 	 * C code.  The etrap handling will leave %g4 in %l4 for us
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) 	 * when it's done.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) 	rdpr	%pil, %g2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) 	wrpr	%g0, PIL_NORMAL_MAX, %pil
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) 	mov	%g1, %g4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) 	ba,pt	%xcc, etrap_irq
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) 	 rd	%pc, %g7
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) #ifdef CONFIG_TRACE_IRQFLAGS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) 	call		trace_hardirqs_off
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) 	 nop
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) 	/* Log the event.  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) 	add	%sp, PTREGS_OFF, %o0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) 	call	sun4v_resum_error
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) 	 mov	%l4, %o1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) 	/* Return from trap.  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) 	ba,pt	%xcc, rtrap_irq
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) 	 nop
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) sun4v_res_mondo_queue_empty:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) 	retry
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) sun4v_res_mondo_queue_full:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) 	/* The queue is full, consolidate our damage by setting
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) 	 * the head equal to the tail.  We'll just trap again otherwise.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) 	 * Call C code to log the event.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) 	mov	INTRQ_RESUM_MONDO_HEAD, %g2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) 	stxa	%g4, [%g2] ASI_QUEUE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) 	membar	#Sync
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) 	rdpr	%pil, %g2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) 	wrpr	%g0, PIL_NORMAL_MAX, %pil
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) 	ba,pt	%xcc, etrap_irq
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) 	 rd	%pc, %g7
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) #ifdef CONFIG_TRACE_IRQFLAGS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) 	call		trace_hardirqs_off
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) 	 nop
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) 	call	sun4v_resum_overflow
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) 	 add	%sp, PTREGS_OFF, %o0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) 	ba,pt	%xcc, rtrap_irq
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) 	 nop
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) sun4v_nonres_mondo:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) 	/* Head offset in %g2, tail offset in %g4.  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) 	mov	INTRQ_NONRESUM_MONDO_HEAD, %g2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) 	ldxa	[%g2] ASI_QUEUE, %g2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) 	mov	INTRQ_NONRESUM_MONDO_TAIL, %g4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) 	ldxa	[%g4] ASI_QUEUE, %g4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) 	cmp	%g2, %g4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) 	be,pn	%xcc, sun4v_nonres_mondo_queue_empty
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) 	 nop
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) 	/* Get &trap_block[smp_processor_id()] into %g3.  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) 	ldxa	[%g0] ASI_SCRATCHPAD, %g3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) 	sub	%g3, TRAP_PER_CPU_FAULT_INFO, %g3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) 	/* Get RES mondo queue base phys address into %g5.  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) 	ldx	[%g3 + TRAP_PER_CPU_NONRESUM_MONDO_PA], %g5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) 	/* Get RES kernel buffer base phys address into %g7.  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) 	ldx	[%g3 + TRAP_PER_CPU_NONRESUM_KBUF_PA], %g7
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) 	/* If the first word is non-zero, queue is full.  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) 	ldxa	[%g7 + %g2] ASI_PHYS_USE_EC, %g1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) 	brnz,pn	%g1, sun4v_nonres_mondo_queue_full
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) 	 nop
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) 	lduw	[%g3 + TRAP_PER_CPU_NONRESUM_QMASK], %g4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) 	/* Remember this entry's offset in %g1.  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) 	mov	%g2, %g1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) 	/* Copy 64-byte queue entry into kernel buffer.  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) 	ldxa	[%g5 + %g2] ASI_PHYS_USE_EC, %g3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) 	stxa	%g3, [%g7 + %g2] ASI_PHYS_USE_EC
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) 	add	%g2, 0x08, %g2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) 	ldxa	[%g5 + %g2] ASI_PHYS_USE_EC, %g3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) 	stxa	%g3, [%g7 + %g2] ASI_PHYS_USE_EC
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) 	add	%g2, 0x08, %g2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) 	ldxa	[%g5 + %g2] ASI_PHYS_USE_EC, %g3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) 	stxa	%g3, [%g7 + %g2] ASI_PHYS_USE_EC
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) 	add	%g2, 0x08, %g2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) 	ldxa	[%g5 + %g2] ASI_PHYS_USE_EC, %g3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) 	stxa	%g3, [%g7 + %g2] ASI_PHYS_USE_EC
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) 	add	%g2, 0x08, %g2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) 	ldxa	[%g5 + %g2] ASI_PHYS_USE_EC, %g3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) 	stxa	%g3, [%g7 + %g2] ASI_PHYS_USE_EC
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) 	add	%g2, 0x08, %g2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) 	ldxa	[%g5 + %g2] ASI_PHYS_USE_EC, %g3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) 	stxa	%g3, [%g7 + %g2] ASI_PHYS_USE_EC
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) 	add	%g2, 0x08, %g2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) 	ldxa	[%g5 + %g2] ASI_PHYS_USE_EC, %g3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) 	stxa	%g3, [%g7 + %g2] ASI_PHYS_USE_EC
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) 	add	%g2, 0x08, %g2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) 	ldxa	[%g5 + %g2] ASI_PHYS_USE_EC, %g3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) 	stxa	%g3, [%g7 + %g2] ASI_PHYS_USE_EC
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) 	add	%g2, 0x08, %g2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) 	/* Update queue head pointer.  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) 	and	%g2, %g4, %g2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) 	mov	INTRQ_NONRESUM_MONDO_HEAD, %g4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) 	stxa	%g2, [%g4] ASI_QUEUE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) 	membar	#Sync
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) 	/* Disable interrupts and save register state so we can call
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) 	 * C code.  The etrap handling will leave %g4 in %l4 for us
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) 	 * when it's done.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) 	rdpr	%pil, %g2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) 	wrpr	%g0, PIL_NORMAL_MAX, %pil
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) 	mov	%g1, %g4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) 	ba,pt	%xcc, etrap_irq
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) 	 rd	%pc, %g7
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) #ifdef CONFIG_TRACE_IRQFLAGS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) 	call		trace_hardirqs_off
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) 	 nop
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) 	/* Log the event.  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) 	add	%sp, PTREGS_OFF, %o0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) 	call	sun4v_nonresum_error
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) 	 mov	%l4, %o1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) 	/* Return from trap.  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) 	ba,pt	%xcc, rtrap_irq
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) 	 nop
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) sun4v_nonres_mondo_queue_empty:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) 	retry
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) sun4v_nonres_mondo_queue_full:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) 	/* The queue is full, consolidate our damage by setting
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) 	 * the head equal to the tail.  We'll just trap again otherwise.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) 	 * Call C code to log the event.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) 	mov	INTRQ_NONRESUM_MONDO_HEAD, %g2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) 	stxa	%g4, [%g2] ASI_QUEUE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) 	membar	#Sync
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) 	rdpr	%pil, %g2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) 	wrpr	%g0, PIL_NORMAL_MAX, %pil
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) 	ba,pt	%xcc, etrap_irq
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) 	 rd	%pc, %g7
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) #ifdef CONFIG_TRACE_IRQFLAGS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) 	call		trace_hardirqs_off
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) 	 nop
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) 	call	sun4v_nonresum_overflow
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) 	 add	%sp, PTREGS_OFF, %o0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) 	ba,pt	%xcc, rtrap_irq
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) 	 nop