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  3. [PATCH 0/7] Embedded PPC misc clean up and optimisation
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[PATCH 6/7] target/ppc: Change ppcemb_tlb_check() to return bool

BALATON Zoltan posted 7 patches 2 years, 8 months ago
Maintainers: Daniel Henrique Barboza <danielhb413@gmail.com>, "Cédric Le Goater" <clg@kaod.org>, David Gibson <david@gibson.dropbear.id.au>, Greg Kurz <groug@kaod.org>
[PATCH 6/7] target/ppc: Change ppcemb_tlb_check() to return bool
Posted by BALATON Zoltan 2 years, 8 months ago 
Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
---
 target/ppc/mmu_common.c | 26 +++++++++++++-------------
 1 file changed, 13 insertions(+), 13 deletions(-)

diff --git a/target/ppc/mmu_common.c b/target/ppc/mmu_common.c
index ff7f987546..bd7d7d5257 100644
--- a/target/ppc/mmu_common.c
+++ b/target/ppc/mmu_common.c
@@ -489,15 +489,15 @@ static int get_segment_6xx_tlb(CPUPPCState *env, mmu_ctx_t *ctx,
 }
 
 /* Generic TLB check function for embedded PowerPC implementations */
-static int ppcemb_tlb_check(CPUPPCState *env, ppcemb_tlb_t *tlb,
-                            hwaddr *raddrp,
-                            target_ulong address, uint32_t pid, int i)
+static bool ppcemb_tlb_check(CPUPPCState *env, ppcemb_tlb_t *tlb,
+                             hwaddr *raddrp,
+                             target_ulong address, uint32_t pid, int i)
 {
     target_ulong mask;
 
     /* Check valid flag */
     if (!(tlb->prot & PAGE_VALID)) {
-        return -1;
+        return false;
     }
     mask = ~(tlb->size - 1);
     qemu_log_mask(CPU_LOG_MMU, "%s: TLB %d address " TARGET_FMT_lx
@@ -506,14 +506,14 @@ static int ppcemb_tlb_check(CPUPPCState *env, ppcemb_tlb_t *tlb,
                   mask, (uint32_t)tlb->PID, tlb->prot);
     /* Check PID */
     if (tlb->PID != 0 && tlb->PID != pid) {
-        return -1;
+        return false;
     }
     /* Check effective address */
     if ((address & mask) != tlb->EPN) {
-        return -1;
+        return false;
     }
     *raddrp = (tlb->RPN & mask) | (address & ~mask);
-    return 0;
+    return true;
 }
 
 /* Generic TLB search function for PowerPC embedded implementations */
@@ -525,7 +525,7 @@ int ppcemb_tlb_search(CPUPPCState *env, target_ulong address, uint32_t pid)
 
     for (i = 0; i < env->nb_tlb; i++) {
         tlb = &env->tlb.tlbe[i];
-        if (ppcemb_tlb_check(env, tlb, &raddr, address, pid, i) == 0) {
+        if (ppcemb_tlb_check(env, tlb, &raddr, address, pid, i)) {
             return i;
         }
     }
@@ -545,8 +545,8 @@ static int mmu40x_get_physical_address(CPUPPCState *env, mmu_ctx_t *ctx,
     pr = FIELD_EX64(env->msr, MSR, PR);
     for (i = 0; i < env->nb_tlb; i++) {
         tlb = &env->tlb.tlbe[i];
-        if (ppcemb_tlb_check(env, tlb, &raddr, address,
-                             env->spr[SPR_40x_PID], i) < 0) {
+        if (!ppcemb_tlb_check(env, tlb, &raddr, address,
+                              env->spr[SPR_40x_PID], i)) {
             continue;
         }
         zsel = (tlb->attr >> 4) & 0xF;
@@ -608,7 +608,7 @@ static int mmubooke_check_tlb(CPUPPCState *env, ppcemb_tlb_t *tlb,
     int prot2;
 
     if (ppcemb_tlb_check(env, tlb, raddr, address,
-                         env->spr[SPR_BOOKE_PID], i) >= 0) {
+                         env->spr[SPR_BOOKE_PID], i)) {
         if (!env->nb_pids) {
             /* Extend the physical address to 36 bits */
             *raddr |= (uint64_t)(tlb->RPN & 0xF) << 32;
@@ -618,13 +618,13 @@ static int mmubooke_check_tlb(CPUPPCState *env, ppcemb_tlb_t *tlb,
 
     if (env->spr[SPR_BOOKE_PID1] &&
         ppcemb_tlb_check(env, tlb, raddr, address,
-                         env->spr[SPR_BOOKE_PID1], i) >= 0) {
+                         env->spr[SPR_BOOKE_PID1], i)) {
         goto found_tlb;
     }
 
     if (env->spr[SPR_BOOKE_PID2] &&
         ppcemb_tlb_check(env, tlb, raddr, address,
-                         env->spr[SPR_BOOKE_PID2], i) >= 0) {
+                         env->spr[SPR_BOOKE_PID2], i)) {
         goto found_tlb;
     }
 
-- 
2.30.9
Re: [PATCH 6/7] target/ppc: Change ppcemb_tlb_check() to return bool
Posted by Cédric Le Goater 2 years, 8 months ago 
On 5/30/23 15:28, BALATON Zoltan wrote:
> Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>


Reviewed-by: Cédric Le Goater <clg@kaod.org>

Thanks,

C.


> ---
>   target/ppc/mmu_common.c | 26 +++++++++++++-------------
>   1 file changed, 13 insertions(+), 13 deletions(-)
> 
> diff --git a/target/ppc/mmu_common.c b/target/ppc/mmu_common.c
> index ff7f987546..bd7d7d5257 100644
> --- a/target/ppc/mmu_common.c
> +++ b/target/ppc/mmu_common.c
> @@ -489,15 +489,15 @@ static int get_segment_6xx_tlb(CPUPPCState *env, mmu_ctx_t *ctx,
>   }
>   
>   /* Generic TLB check function for embedded PowerPC implementations */
> -static int ppcemb_tlb_check(CPUPPCState *env, ppcemb_tlb_t *tlb,
> -                            hwaddr *raddrp,
> -                            target_ulong address, uint32_t pid, int i)
> +static bool ppcemb_tlb_check(CPUPPCState *env, ppcemb_tlb_t *tlb,
> +                             hwaddr *raddrp,
> +                             target_ulong address, uint32_t pid, int i)
>   {
>       target_ulong mask;
>   
>       /* Check valid flag */
>       if (!(tlb->prot & PAGE_VALID)) {
> -        return -1;
> +        return false;
>       }
>       mask = ~(tlb->size - 1);
>       qemu_log_mask(CPU_LOG_MMU, "%s: TLB %d address " TARGET_FMT_lx
> @@ -506,14 +506,14 @@ static int ppcemb_tlb_check(CPUPPCState *env, ppcemb_tlb_t *tlb,
>                     mask, (uint32_t)tlb->PID, tlb->prot);
>       /* Check PID */
>       if (tlb->PID != 0 && tlb->PID != pid) {
> -        return -1;
> +        return false;
>       }
>       /* Check effective address */
>       if ((address & mask) != tlb->EPN) {
> -        return -1;
> +        return false;
>       }
>       *raddrp = (tlb->RPN & mask) | (address & ~mask);
> -    return 0;
> +    return true;
>   }
>   
>   /* Generic TLB search function for PowerPC embedded implementations */
> @@ -525,7 +525,7 @@ int ppcemb_tlb_search(CPUPPCState *env, target_ulong address, uint32_t pid)
>   
>       for (i = 0; i < env->nb_tlb; i++) {
>           tlb = &env->tlb.tlbe[i];
> -        if (ppcemb_tlb_check(env, tlb, &raddr, address, pid, i) == 0) {
> +        if (ppcemb_tlb_check(env, tlb, &raddr, address, pid, i)) {
>               return i;
>           }
>       }
> @@ -545,8 +545,8 @@ static int mmu40x_get_physical_address(CPUPPCState *env, mmu_ctx_t *ctx,
>       pr = FIELD_EX64(env->msr, MSR, PR);
>       for (i = 0; i < env->nb_tlb; i++) {
>           tlb = &env->tlb.tlbe[i];
> -        if (ppcemb_tlb_check(env, tlb, &raddr, address,
> -                             env->spr[SPR_40x_PID], i) < 0) {
> +        if (!ppcemb_tlb_check(env, tlb, &raddr, address,
> +                              env->spr[SPR_40x_PID], i)) {
>               continue;
>           }
>           zsel = (tlb->attr >> 4) & 0xF;
> @@ -608,7 +608,7 @@ static int mmubooke_check_tlb(CPUPPCState *env, ppcemb_tlb_t *tlb,
>       int prot2;
>   
>       if (ppcemb_tlb_check(env, tlb, raddr, address,
> -                         env->spr[SPR_BOOKE_PID], i) >= 0) {
> +                         env->spr[SPR_BOOKE_PID], i)) {
>           if (!env->nb_pids) {
>               /* Extend the physical address to 36 bits */
>               *raddr |= (uint64_t)(tlb->RPN & 0xF) << 32;
> @@ -618,13 +618,13 @@ static int mmubooke_check_tlb(CPUPPCState *env, ppcemb_tlb_t *tlb,
>   
>       if (env->spr[SPR_BOOKE_PID1] &&
>           ppcemb_tlb_check(env, tlb, raddr, address,
> -                         env->spr[SPR_BOOKE_PID1], i) >= 0) {
> +                         env->spr[SPR_BOOKE_PID1], i)) {
>           goto found_tlb;
>       }
>   
>       if (env->spr[SPR_BOOKE_PID2] &&
>           ppcemb_tlb_check(env, tlb, raddr, address,
> -                         env->spr[SPR_BOOKE_PID2], i) >= 0) {
> +                         env->spr[SPR_BOOKE_PID2], i)) {
>           goto found_tlb;
>       }
>

Patchew 2.1-devel-b67e4c2

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