Merging upstream version 6.9.7.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 64 insertions, 70 deletions

diff --git a/arch/mips/kernel/pm-cps.c b/arch/mips/kernel/pm-cps.c
index 9bf60d7d44..d09ca77e62 100644
--- a/arch/mips/kernel/pm-cps.c
+++ b/arch/mips/kernel/pm-cps.c
@@ -18,6 +18,7 @@
 #include <asm/mipsmtregs.h>
 #include <asm/pm.h>
 #include <asm/pm-cps.h>
+#include <asm/regdef.h>
 #include <asm/smp-cps.h>
 #include <asm/uasm.h>
 
@@ -69,13 +70,6 @@ DEFINE_PER_CPU_ALIGNED(struct mips_static_suspend_state, cps_cpu_state);
 static struct uasm_label labels[32];
 static struct uasm_reloc relocs[32];
 
-enum mips_reg {
-	zero, at, v0, v1, a0, a1, a2, a3,
-	t0, t1, t2, t3, t4, t5, t6, t7,
-	s0, s1, s2, s3, s4, s5, s6, s7,
-	t8, t9, k0, k1, gp, sp, fp, ra,
-};
-
 bool cps_pm_support_state(enum cps_pm_state state)
 {
 	return test_bit(state, state_support);
@@ -203,13 +197,13 @@ static void cps_gen_cache_routine(u32 **pp, struct uasm_label **pl,
 		return;
 
 	/* Load base address */
-	UASM_i_LA(pp, t0, (long)CKSEG0);
+	UASM_i_LA(pp, GPR_T0, (long)CKSEG0);
 
 	/* Calculate end address */
 	if (cache_size < 0x8000)
-		uasm_i_addiu(pp, t1, t0, cache_size);
+		uasm_i_addiu(pp, GPR_T1, GPR_T0, cache_size);
 	else
-		UASM_i_LA(pp, t1, (long)(CKSEG0 + cache_size));
+		UASM_i_LA(pp, GPR_T1, (long)(CKSEG0 + cache_size));
 
 	/* Start of cache op loop */
 	uasm_build_label(pl, *pp, lbl);
@@ -217,19 +211,19 @@ static void cps_gen_cache_routine(u32 **pp, struct uasm_label **pl,
 	/* Generate the cache ops */
 	for (i = 0; i < unroll_lines; i++) {
 		if (cpu_has_mips_r6) {
-			uasm_i_cache(pp, op, 0, t0);
-			uasm_i_addiu(pp, t0, t0, cache->linesz);
+			uasm_i_cache(pp, op, 0, GPR_T0);
+			uasm_i_addiu(pp, GPR_T0, GPR_T0, cache->linesz);
 		} else {
-			uasm_i_cache(pp, op, i * cache->linesz, t0);
+			uasm_i_cache(pp, op, i * cache->linesz, GPR_T0);
 		}
 	}
 
 	if (!cpu_has_mips_r6)
 		/* Update the base address */
-		uasm_i_addiu(pp, t0, t0, unroll_lines * cache->linesz);
+		uasm_i_addiu(pp, GPR_T0, GPR_T0, unroll_lines * cache->linesz);
 
 	/* Loop if we haven't reached the end address yet */
-	uasm_il_bne(pp, pr, t0, t1, lbl);
+	uasm_il_bne(pp, pr, GPR_T0, GPR_T1, lbl);
 	uasm_i_nop(pp);
 }
 
@@ -275,25 +269,25 @@ static int cps_gen_flush_fsb(u32 **pp, struct uasm_label **pl,
 	 */
 
 	/* Preserve perf counter setup */
-	uasm_i_mfc0(pp, t2, 25, (perf_counter * 2) + 0); /* PerfCtlN */
-	uasm_i_mfc0(pp, t3, 25, (perf_counter * 2) + 1); /* PerfCntN */
+	uasm_i_mfc0(pp, GPR_T2, 25, (perf_counter * 2) + 0); /* PerfCtlN */
+	uasm_i_mfc0(pp, GPR_T3, 25, (perf_counter * 2) + 1); /* PerfCntN */
 
 	/* Setup perf counter to count FSB full pipeline stalls */
-	uasm_i_addiu(pp, t0, zero, (perf_event << 5) | 0xf);
-	uasm_i_mtc0(pp, t0, 25, (perf_counter * 2) + 0); /* PerfCtlN */
+	uasm_i_addiu(pp, GPR_T0, GPR_ZERO, (perf_event << 5) | 0xf);
+	uasm_i_mtc0(pp, GPR_T0, 25, (perf_counter * 2) + 0); /* PerfCtlN */
 	uasm_i_ehb(pp);
-	uasm_i_mtc0(pp, zero, 25, (perf_counter * 2) + 1); /* PerfCntN */
+	uasm_i_mtc0(pp, GPR_ZERO, 25, (perf_counter * 2) + 1); /* PerfCntN */
 	uasm_i_ehb(pp);
 
 	/* Base address for loads */
-	UASM_i_LA(pp, t0, (long)CKSEG0);
+	UASM_i_LA(pp, GPR_T0, (long)CKSEG0);
 
 	/* Start of clear loop */
 	uasm_build_label(pl, *pp, lbl);
 
 	/* Perform some loads to fill the FSB */
 	for (i = 0; i < num_loads; i++)
-		uasm_i_lw(pp, zero, i * line_size * line_stride, t0);
+		uasm_i_lw(pp, GPR_ZERO, i * line_size * line_stride, GPR_T0);
 
 	/*
 	 * Invalidate the new D-cache entries so that the cache will need
@@ -301,9 +295,9 @@ static int cps_gen_flush_fsb(u32 **pp, struct uasm_label **pl,
 	 */
 	for (i = 0; i < num_loads; i++) {
 		uasm_i_cache(pp, Hit_Invalidate_D,
-			     i * line_size * line_stride, t0);
+			     i * line_size * line_stride, GPR_T0);
 		uasm_i_cache(pp, Hit_Writeback_Inv_SD,
-			     i * line_size * line_stride, t0);
+			     i * line_size * line_stride, GPR_T0);
 	}
 
 	/* Barrier ensuring previous cache invalidates are complete */
@@ -311,16 +305,16 @@ static int cps_gen_flush_fsb(u32 **pp, struct uasm_label **pl,
 	uasm_i_ehb(pp);
 
 	/* Check whether the pipeline stalled due to the FSB being full */
-	uasm_i_mfc0(pp, t1, 25, (perf_counter * 2) + 1); /* PerfCntN */
+	uasm_i_mfc0(pp, GPR_T1, 25, (perf_counter * 2) + 1); /* PerfCntN */
 
 	/* Loop if it didn't */
-	uasm_il_beqz(pp, pr, t1, lbl);
+	uasm_il_beqz(pp, pr, GPR_T1, lbl);
 	uasm_i_nop(pp);
 
 	/* Restore perf counter 1. The count may well now be wrong... */
-	uasm_i_mtc0(pp, t2, 25, (perf_counter * 2) + 0); /* PerfCtlN */
+	uasm_i_mtc0(pp, GPR_T2, 25, (perf_counter * 2) + 0); /* PerfCtlN */
 	uasm_i_ehb(pp);
-	uasm_i_mtc0(pp, t3, 25, (perf_counter * 2) + 1); /* PerfCntN */
+	uasm_i_mtc0(pp, GPR_T3, 25, (perf_counter * 2) + 1); /* PerfCntN */
 	uasm_i_ehb(pp);
 
 	return 0;
@@ -330,12 +324,12 @@ static void cps_gen_set_top_bit(u32 **pp, struct uasm_label **pl,
 				struct uasm_reloc **pr,
 				unsigned r_addr, int lbl)
 {
-	uasm_i_lui(pp, t0, uasm_rel_hi(0x80000000));
+	uasm_i_lui(pp, GPR_T0, uasm_rel_hi(0x80000000));
 	uasm_build_label(pl, *pp, lbl);
-	uasm_i_ll(pp, t1, 0, r_addr);
-	uasm_i_or(pp, t1, t1, t0);
-	uasm_i_sc(pp, t1, 0, r_addr);
-	uasm_il_beqz(pp, pr, t1, lbl);
+	uasm_i_ll(pp, GPR_T1, 0, r_addr);
+	uasm_i_or(pp, GPR_T1, GPR_T1, GPR_T0);
+	uasm_i_sc(pp, GPR_T1, 0, r_addr);
+	uasm_il_beqz(pp, pr, GPR_T1, lbl);
 	uasm_i_nop(pp);
 }
 
@@ -344,9 +338,9 @@ static void *cps_gen_entry_code(unsigned cpu, enum cps_pm_state state)
 	struct uasm_label *l = labels;
 	struct uasm_reloc *r = relocs;
 	u32 *buf, *p;
-	const unsigned r_online = a0;
-	const unsigned r_nc_count = a1;
-	const unsigned r_pcohctl = t7;
+	const unsigned r_online = GPR_A0;
+	const unsigned r_nc_count = GPR_A1;
+	const unsigned r_pcohctl = GPR_T8;
 	const unsigned max_instrs = 256;
 	unsigned cpc_cmd;
 	int err;
@@ -383,8 +377,8 @@ static void *cps_gen_entry_code(unsigned cpu, enum cps_pm_state state)
 		 * with the return address placed in v0 to avoid clobbering
 		 * the ra register before it is saved.
 		 */
-		UASM_i_LA(&p, t0, (long)mips_cps_pm_save);
-		uasm_i_jalr(&p, v0, t0);
+		UASM_i_LA(&p, GPR_T0, (long)mips_cps_pm_save);
+		uasm_i_jalr(&p, GPR_V0, GPR_T0);
 		uasm_i_nop(&p);
 	}
 
@@ -399,11 +393,11 @@ static void *cps_gen_entry_code(unsigned cpu, enum cps_pm_state state)
 		/* Increment ready_count */
 		uasm_i_sync(&p, __SYNC_mb);
 		uasm_build_label(&l, p, lbl_incready);
-		uasm_i_ll(&p, t1, 0, r_nc_count);
-		uasm_i_addiu(&p, t2, t1, 1);
-		uasm_i_sc(&p, t2, 0, r_nc_count);
-		uasm_il_beqz(&p, &r, t2, lbl_incready);
-		uasm_i_addiu(&p, t1, t1, 1);
+		uasm_i_ll(&p, GPR_T1, 0, r_nc_count);
+		uasm_i_addiu(&p, GPR_T2, GPR_T1, 1);
+		uasm_i_sc(&p, GPR_T2, 0, r_nc_count);
+		uasm_il_beqz(&p, &r, GPR_T2, lbl_incready);
+		uasm_i_addiu(&p, GPR_T1, GPR_T1, 1);
 
 		/* Barrier ensuring all CPUs see the updated r_nc_count value */
 		uasm_i_sync(&p, __SYNC_mb);
@@ -412,7 +406,7 @@ static void *cps_gen_entry_code(unsigned cpu, enum cps_pm_state state)
 		 * If this is the last VPE to become ready for non-coherence
 		 * then it should branch below.
 		 */
-		uasm_il_beq(&p, &r, t1, r_online, lbl_disable_coherence);
+		uasm_il_beq(&p, &r, GPR_T1, r_online, lbl_disable_coherence);
 		uasm_i_nop(&p);
 
 		if (state < CPS_PM_POWER_GATED) {
@@ -422,13 +416,13 @@ static void *cps_gen_entry_code(unsigned cpu, enum cps_pm_state state)
 			 * has been disabled before proceeding, which it will do
 			 * by polling for the top bit of ready_count being set.
 			 */
-			uasm_i_addiu(&p, t1, zero, -1);
+			uasm_i_addiu(&p, GPR_T1, GPR_ZERO, -1);
 			uasm_build_label(&l, p, lbl_poll_cont);
-			uasm_i_lw(&p, t0, 0, r_nc_count);
-			uasm_il_bltz(&p, &r, t0, lbl_secondary_cont);
+			uasm_i_lw(&p, GPR_T0, 0, r_nc_count);
+			uasm_il_bltz(&p, &r, GPR_T0, lbl_secondary_cont);
 			uasm_i_ehb(&p);
 			if (cpu_has_mipsmt)
-				uasm_i_yield(&p, zero, t1);
+				uasm_i_yield(&p, GPR_ZERO, GPR_T1);
 			uasm_il_b(&p, &r, lbl_poll_cont);
 			uasm_i_nop(&p);
 		} else {
@@ -438,16 +432,16 @@ static void *cps_gen_entry_code(unsigned cpu, enum cps_pm_state state)
 			 */
 			if (cpu_has_mipsmt) {
 				/* Halt the VPE via C0 tchalt register */
-				uasm_i_addiu(&p, t0, zero, TCHALT_H);
-				uasm_i_mtc0(&p, t0, 2, 4);
+				uasm_i_addiu(&p, GPR_T0, GPR_ZERO, TCHALT_H);
+				uasm_i_mtc0(&p, GPR_T0, 2, 4);
 			} else if (cpu_has_vp) {
 				/* Halt the VP via the CPC VP_STOP register */
 				unsigned int vpe_id;
 
 				vpe_id = cpu_vpe_id(&cpu_data[cpu]);
-				uasm_i_addiu(&p, t0, zero, 1 << vpe_id);
-				UASM_i_LA(&p, t1, (long)addr_cpc_cl_vp_stop());
-				uasm_i_sw(&p, t0, 0, t1);
+				uasm_i_addiu(&p, GPR_T0, GPR_ZERO, 1 << vpe_id);
+				UASM_i_LA(&p, GPR_T1, (long)addr_cpc_cl_vp_stop());
+				uasm_i_sw(&p, GPR_T0, 0, GPR_T1);
 			} else {
 				BUG();
 			}
@@ -482,9 +476,9 @@ static void *cps_gen_entry_code(unsigned cpu, enum cps_pm_state state)
 		* defined by the interAptiv & proAptiv SUMs as ensuring that the
 		*  operation resulting from the preceding store is complete.
 		*/
-		uasm_i_addiu(&p, t0, zero, 1 << cpu_core(&cpu_data[cpu]));
-		uasm_i_sw(&p, t0, 0, r_pcohctl);
-		uasm_i_lw(&p, t0, 0, r_pcohctl);
+		uasm_i_addiu(&p, GPR_T0, GPR_ZERO, 1 << cpu_core(&cpu_data[cpu]));
+		uasm_i_sw(&p, GPR_T0, 0, r_pcohctl);
+		uasm_i_lw(&p, GPR_T0, 0, r_pcohctl);
 
 		/* Barrier to ensure write to coherence control is complete */
 		uasm_i_sync(&p, __SYNC_full);
@@ -492,8 +486,8 @@ static void *cps_gen_entry_code(unsigned cpu, enum cps_pm_state state)
 	}
 
 	/* Disable coherence */
-	uasm_i_sw(&p, zero, 0, r_pcohctl);
-	uasm_i_lw(&p, t0, 0, r_pcohctl);
+	uasm_i_sw(&p, GPR_ZERO, 0, r_pcohctl);
+	uasm_i_lw(&p, GPR_T0, 0, r_pcohctl);
 
 	if (state >= CPS_PM_CLOCK_GATED) {
 		err = cps_gen_flush_fsb(&p, &l, &r, &cpu_data[cpu],
@@ -515,9 +509,9 @@ static void *cps_gen_entry_code(unsigned cpu, enum cps_pm_state state)
 		}
 
 		/* Issue the CPC command */
-		UASM_i_LA(&p, t0, (long)addr_cpc_cl_cmd());
-		uasm_i_addiu(&p, t1, zero, cpc_cmd);
-		uasm_i_sw(&p, t1, 0, t0);
+		UASM_i_LA(&p, GPR_T0, (long)addr_cpc_cl_cmd());
+		uasm_i_addiu(&p, GPR_T1, GPR_ZERO, cpc_cmd);
+		uasm_i_sw(&p, GPR_T1, 0, GPR_T0);
 
 		if (state == CPS_PM_POWER_GATED) {
 			/* If anything goes wrong just hang */
@@ -564,12 +558,12 @@ static void *cps_gen_entry_code(unsigned cpu, enum cps_pm_state state)
 	 * will run this. The first will actually re-enable coherence & the
 	 * rest will just be performing a rather unusual nop.
 	 */
-	uasm_i_addiu(&p, t0, zero, mips_cm_revision() < CM_REV_CM3
+	uasm_i_addiu(&p, GPR_T0, GPR_ZERO, mips_cm_revision() < CM_REV_CM3
 				? CM_GCR_Cx_COHERENCE_COHDOMAINEN
 				: CM3_GCR_Cx_COHERENCE_COHEN);
 
-	uasm_i_sw(&p, t0, 0, r_pcohctl);
-	uasm_i_lw(&p, t0, 0, r_pcohctl);
+	uasm_i_sw(&p, GPR_T0, 0, r_pcohctl);
+	uasm_i_lw(&p, GPR_T0, 0, r_pcohctl);
 
 	/* Barrier to ensure write to coherence control is complete */
 	uasm_i_sync(&p, __SYNC_full);
@@ -579,11 +573,11 @@ static void *cps_gen_entry_code(unsigned cpu, enum cps_pm_state state)
 		/* Decrement ready_count */
 		uasm_build_label(&l, p, lbl_decready);
 		uasm_i_sync(&p, __SYNC_mb);
-		uasm_i_ll(&p, t1, 0, r_nc_count);
-		uasm_i_addiu(&p, t2, t1, -1);
-		uasm_i_sc(&p, t2, 0, r_nc_count);
-		uasm_il_beqz(&p, &r, t2, lbl_decready);
-		uasm_i_andi(&p, v0, t1, (1 << fls(smp_num_siblings)) - 1);
+		uasm_i_ll(&p, GPR_T1, 0, r_nc_count);
+		uasm_i_addiu(&p, GPR_T2, GPR_T1, -1);
+		uasm_i_sc(&p, GPR_T2, 0, r_nc_count);
+		uasm_il_beqz(&p, &r, GPR_T2, lbl_decready);
+		uasm_i_andi(&p, GPR_V0, GPR_T1, (1 << fls(smp_num_siblings)) - 1);
 
 		/* Barrier ensuring all CPUs see the updated r_nc_count value */
 		uasm_i_sync(&p, __SYNC_mb);
@@ -612,7 +606,7 @@ static void *cps_gen_entry_code(unsigned cpu, enum cps_pm_state state)
 	}
 
 	/* The core is coherent, time to return to C code */
-	uasm_i_jr(&p, ra);
+	uasm_i_jr(&p, GPR_RA);
 	uasm_i_nop(&p);
 
 gen_done: