From: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
To: linux-mips@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH 01/12] MIPS: Convert R4600_V1_INDEX_ICACHEOP into a config option
Date: Mon, 24 Aug 2020 18:32:43 +0200 [thread overview]
Message-ID: <20200824163257.44533-2-tsbogend@alpha.franken.de> (raw)
In-Reply-To: <20200824163257.44533-1-tsbogend@alpha.franken.de>
Use a new config option to enable R4600 V1 index I-cacheop workaround
and remove define from different war.h files.
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
---
arch/mips/Kconfig | 8 ++++++++
arch/mips/include/asm/mach-cavium-octeon/war.h | 1 -
arch/mips/include/asm/mach-generic/war.h | 1 -
arch/mips/include/asm/mach-ip22/war.h | 1 -
arch/mips/include/asm/mach-ip27/war.h | 1 -
arch/mips/include/asm/mach-ip28/war.h | 1 -
arch/mips/include/asm/mach-ip30/war.h | 1 -
arch/mips/include/asm/mach-ip32/war.h | 1 -
arch/mips/include/asm/mach-malta/war.h | 1 -
arch/mips/include/asm/mach-rc32434/war.h | 1 -
arch/mips/include/asm/mach-rm/war.h | 1 -
arch/mips/include/asm/mach-sibyte/war.h | 1 -
arch/mips/include/asm/mach-tx49xx/war.h | 1 -
arch/mips/include/asm/war.h | 10 ----------
arch/mips/mm/c-r4k.c | 6 ++++--
15 files changed, 12 insertions(+), 24 deletions(-)
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index 99220e7e465e..90f8aa04e2ec 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -638,6 +638,7 @@ config SGI_IP22
select SYS_SUPPORTS_32BIT_KERNEL
select SYS_SUPPORTS_64BIT_KERNEL
select SYS_SUPPORTS_BIG_ENDIAN
+ select WAR_R4600_V1_INDEX_ICACHEOP
select MIPS_L1_CACHE_SHIFT_7
help
This are the SGI Indy, Challenge S and Indigo2, as well as certain
@@ -2607,6 +2608,13 @@ config MIPS_ASID_BITS_VARIABLE
config MIPS_CRC_SUPPORT
bool
+# R4600 erratum. Due to the lack of errata information the exact
+# technical details aren't known. I've experimentally found that disabling
+# interrupts during indexed I-cache flushes seems to be sufficient to deal
+# with the issue.
+config WAR_R4600_V1_INDEX_ICACHEOP
+ bool
+
#
# - Highmem only makes sense for the 32-bit kernel.
# - The current highmem code will only work properly on physically indexed
diff --git a/arch/mips/include/asm/mach-cavium-octeon/war.h b/arch/mips/include/asm/mach-cavium-octeon/war.h
index 2421411b7636..1e01e2f20086 100644
--- a/arch/mips/include/asm/mach-cavium-octeon/war.h
+++ b/arch/mips/include/asm/mach-cavium-octeon/war.h
@@ -9,7 +9,6 @@
#ifndef __ASM_MIPS_MACH_CAVIUM_OCTEON_WAR_H
#define __ASM_MIPS_MACH_CAVIUM_OCTEON_WAR_H
-#define R4600_V1_INDEX_ICACHEOP_WAR 0
#define R4600_V1_HIT_CACHEOP_WAR 0
#define R4600_V2_HIT_CACHEOP_WAR 0
#define BCM1250_M3_WAR 0
diff --git a/arch/mips/include/asm/mach-generic/war.h b/arch/mips/include/asm/mach-generic/war.h
index f0f4a35d0870..7614a1545d1c 100644
--- a/arch/mips/include/asm/mach-generic/war.h
+++ b/arch/mips/include/asm/mach-generic/war.h
@@ -8,7 +8,6 @@
#ifndef __ASM_MACH_GENERIC_WAR_H
#define __ASM_MACH_GENERIC_WAR_H
-#define R4600_V1_INDEX_ICACHEOP_WAR 0
#define R4600_V1_HIT_CACHEOP_WAR 0
#define R4600_V2_HIT_CACHEOP_WAR 0
#define BCM1250_M3_WAR 0
diff --git a/arch/mips/include/asm/mach-ip22/war.h b/arch/mips/include/asm/mach-ip22/war.h
index b48eb4ac362d..3424c1e8a24f 100644
--- a/arch/mips/include/asm/mach-ip22/war.h
+++ b/arch/mips/include/asm/mach-ip22/war.h
@@ -12,7 +12,6 @@
* R4600 CPU modules for the Indy come with both V1.7 and V2.0 processors.
*/
-#define R4600_V1_INDEX_ICACHEOP_WAR 1
#define R4600_V1_HIT_CACHEOP_WAR 1
#define R4600_V2_HIT_CACHEOP_WAR 1
#define BCM1250_M3_WAR 0
diff --git a/arch/mips/include/asm/mach-ip27/war.h b/arch/mips/include/asm/mach-ip27/war.h
index ef3efce0094a..5a91a7564fb9 100644
--- a/arch/mips/include/asm/mach-ip27/war.h
+++ b/arch/mips/include/asm/mach-ip27/war.h
@@ -8,7 +8,6 @@
#ifndef __ASM_MIPS_MACH_IP27_WAR_H
#define __ASM_MIPS_MACH_IP27_WAR_H
-#define R4600_V1_INDEX_ICACHEOP_WAR 0
#define R4600_V1_HIT_CACHEOP_WAR 0
#define R4600_V2_HIT_CACHEOP_WAR 0
#define BCM1250_M3_WAR 0
diff --git a/arch/mips/include/asm/mach-ip28/war.h b/arch/mips/include/asm/mach-ip28/war.h
index 61cd67354829..0dc70d59909e 100644
--- a/arch/mips/include/asm/mach-ip28/war.h
+++ b/arch/mips/include/asm/mach-ip28/war.h
@@ -8,7 +8,6 @@
#ifndef __ASM_MIPS_MACH_IP28_WAR_H
#define __ASM_MIPS_MACH_IP28_WAR_H
-#define R4600_V1_INDEX_ICACHEOP_WAR 0
#define R4600_V1_HIT_CACHEOP_WAR 0
#define R4600_V2_HIT_CACHEOP_WAR 0
#define BCM1250_M3_WAR 0
diff --git a/arch/mips/include/asm/mach-ip30/war.h b/arch/mips/include/asm/mach-ip30/war.h
index a1fa0c1f5300..9f5c3305674c 100644
--- a/arch/mips/include/asm/mach-ip30/war.h
+++ b/arch/mips/include/asm/mach-ip30/war.h
@@ -5,7 +5,6 @@
#ifndef __ASM_MIPS_MACH_IP30_WAR_H
#define __ASM_MIPS_MACH_IP30_WAR_H
-#define R4600_V1_INDEX_ICACHEOP_WAR 0
#define R4600_V1_HIT_CACHEOP_WAR 0
#define R4600_V2_HIT_CACHEOP_WAR 0
#define BCM1250_M3_WAR 0
diff --git a/arch/mips/include/asm/mach-ip32/war.h b/arch/mips/include/asm/mach-ip32/war.h
index e77b9d1b6c96..ac933b9119bb 100644
--- a/arch/mips/include/asm/mach-ip32/war.h
+++ b/arch/mips/include/asm/mach-ip32/war.h
@@ -8,7 +8,6 @@
#ifndef __ASM_MIPS_MACH_IP32_WAR_H
#define __ASM_MIPS_MACH_IP32_WAR_H
-#define R4600_V1_INDEX_ICACHEOP_WAR 0
#define R4600_V1_HIT_CACHEOP_WAR 0
#define R4600_V2_HIT_CACHEOP_WAR 0
#define BCM1250_M3_WAR 0
diff --git a/arch/mips/include/asm/mach-malta/war.h b/arch/mips/include/asm/mach-malta/war.h
index d62d2ffe515e..12c6393b6f31 100644
--- a/arch/mips/include/asm/mach-malta/war.h
+++ b/arch/mips/include/asm/mach-malta/war.h
@@ -8,7 +8,6 @@
#ifndef __ASM_MIPS_MACH_MIPS_WAR_H
#define __ASM_MIPS_MACH_MIPS_WAR_H
-#define R4600_V1_INDEX_ICACHEOP_WAR 0
#define R4600_V1_HIT_CACHEOP_WAR 0
#define R4600_V2_HIT_CACHEOP_WAR 0
#define BCM1250_M3_WAR 0
diff --git a/arch/mips/include/asm/mach-rc32434/war.h b/arch/mips/include/asm/mach-rc32434/war.h
index af430d26f713..62e04bea61b3 100644
--- a/arch/mips/include/asm/mach-rc32434/war.h
+++ b/arch/mips/include/asm/mach-rc32434/war.h
@@ -8,7 +8,6 @@
#ifndef __ASM_MIPS_MACH_MIPS_WAR_H
#define __ASM_MIPS_MACH_MIPS_WAR_H
-#define R4600_V1_INDEX_ICACHEOP_WAR 0
#define R4600_V1_HIT_CACHEOP_WAR 0
#define R4600_V2_HIT_CACHEOP_WAR 0
#define BCM1250_M3_WAR 0
diff --git a/arch/mips/include/asm/mach-rm/war.h b/arch/mips/include/asm/mach-rm/war.h
index eca16d167c2f..fe3c17f38650 100644
--- a/arch/mips/include/asm/mach-rm/war.h
+++ b/arch/mips/include/asm/mach-rm/war.h
@@ -12,7 +12,6 @@
* The RM200C seems to have been shipped only with V2.0 R4600s
*/
-#define R4600_V1_INDEX_ICACHEOP_WAR 0
#define R4600_V1_HIT_CACHEOP_WAR 0
#define R4600_V2_HIT_CACHEOP_WAR 1
#define BCM1250_M3_WAR 0
diff --git a/arch/mips/include/asm/mach-sibyte/war.h b/arch/mips/include/asm/mach-sibyte/war.h
index 4755b6116807..d34f3c1d6741 100644
--- a/arch/mips/include/asm/mach-sibyte/war.h
+++ b/arch/mips/include/asm/mach-sibyte/war.h
@@ -8,7 +8,6 @@
#ifndef __ASM_MIPS_MACH_SIBYTE_WAR_H
#define __ASM_MIPS_MACH_SIBYTE_WAR_H
-#define R4600_V1_INDEX_ICACHEOP_WAR 0
#define R4600_V1_HIT_CACHEOP_WAR 0
#define R4600_V2_HIT_CACHEOP_WAR 0
diff --git a/arch/mips/include/asm/mach-tx49xx/war.h b/arch/mips/include/asm/mach-tx49xx/war.h
index 445abb4eb769..eb0375da266a 100644
--- a/arch/mips/include/asm/mach-tx49xx/war.h
+++ b/arch/mips/include/asm/mach-tx49xx/war.h
@@ -8,7 +8,6 @@
#ifndef __ASM_MIPS_MACH_TX49XX_WAR_H
#define __ASM_MIPS_MACH_TX49XX_WAR_H
-#define R4600_V1_INDEX_ICACHEOP_WAR 0
#define R4600_V1_HIT_CACHEOP_WAR 0
#define R4600_V2_HIT_CACHEOP_WAR 0
#define BCM1250_M3_WAR 0
diff --git a/arch/mips/include/asm/war.h b/arch/mips/include/asm/war.h
index e43f800e662d..3c8923692fca 100644
--- a/arch/mips/include/asm/war.h
+++ b/arch/mips/include/asm/war.h
@@ -72,16 +72,6 @@
#define DADDI_WAR 0
#endif
-/*
- * Another R4600 erratum. Due to the lack of errata information the exact
- * technical details aren't known. I've experimentally found that disabling
- * interrupts during indexed I-cache flushes seems to be sufficient to deal
- * with the issue.
- */
-#ifndef R4600_V1_INDEX_ICACHEOP_WAR
-#error Check setting of R4600_V1_INDEX_ICACHEOP_WAR for your platform
-#endif
-
/*
* Pleasures of the R4600 V1.x. Cite from the IDT R4600 V1.7 errata:
*
diff --git a/arch/mips/mm/c-r4k.c b/arch/mips/mm/c-r4k.c
index fc5a6d25f74f..bf454da84a9b 100644
--- a/arch/mips/mm/c-r4k.c
+++ b/arch/mips/mm/c-r4k.c
@@ -366,7 +366,8 @@ static void r4k_blast_icache_page_indexed_setup(void)
else if (ic_lsize == 16)
r4k_blast_icache_page_indexed = blast_icache16_page_indexed;
else if (ic_lsize == 32) {
- if (R4600_V1_INDEX_ICACHEOP_WAR && cpu_is_r4600_v1_x())
+ if (IS_ENABLED(CONFIG_WAR_R4600_V1_INDEX_ICACHEOP) &&
+ cpu_is_r4600_v1_x())
r4k_blast_icache_page_indexed =
blast_icache32_r4600_v1_page_indexed;
else if (TX49XX_ICACHE_INDEX_INV_WAR)
@@ -394,7 +395,8 @@ static void r4k_blast_icache_setup(void)
else if (ic_lsize == 16)
r4k_blast_icache = blast_icache16;
else if (ic_lsize == 32) {
- if (R4600_V1_INDEX_ICACHEOP_WAR && cpu_is_r4600_v1_x())
+ if (IS_ENABLED(CONFIG_WAR_R4600_V1_INDEX_ICACHEOP) &&
+ cpu_is_r4600_v1_x())
r4k_blast_icache = blast_r4600_v1_icache32;
else if (TX49XX_ICACHE_INDEX_INV_WAR)
r4k_blast_icache = tx49_blast_icache32;
--
2.16.4
next prev parent reply other threads:[~2020-08-24 16:33 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-08-24 16:32 [PATCH 00/12] Convert WAR defines to config options Thomas Bogendoerfer
2020-08-24 16:32 ` Thomas Bogendoerfer [this message]
2020-08-24 16:32 ` [PATCH 02/12] MIPS: Convert R4600_V1_HIT_CACHEOP into a config option Thomas Bogendoerfer
2020-08-24 16:32 ` [PATCH 03/12] MIPS: Convert R4600_V2_HIT_CACHEOP " Thomas Bogendoerfer
2020-08-24 16:32 ` [PATCH 04/12] MIPS: Remove MIPS4K_ICACHE_REFILL_WAR and MIPS_CACHE_SYNC_WAR Thomas Bogendoerfer
2020-08-24 16:32 ` [PATCH 05/12] MIPS: Convert TX49XX_ICACHE_INDEX_INV into a config option Thomas Bogendoerfer
2020-08-24 16:32 ` [PATCH 06/12] MIPS: Convert ICACHE_REFILLS_WORKAROUND_WAR " Thomas Bogendoerfer
2020-08-24 16:32 ` [PATCH 07/12] MIPS: Convert R10000_LLSC_WAR info " Thomas Bogendoerfer
2020-08-24 16:32 ` [PATCH 08/12] MIPS: Convert MIPS34K_MISSED_ITLB_WAR into " Thomas Bogendoerfer
2020-08-24 16:32 ` [PATCH 09/12] MIPS: Replace SIBYTE_1956_WAR by CONFIG_SB1_PASS_2_WORKAROUNDS Thomas Bogendoerfer
2020-08-24 16:32 ` [PATCH 10/12] MIPS: Get rid of BCM1250_M3_WAR Thomas Bogendoerfer
2020-08-24 16:32 ` [PATCH 11/12] MIPS: Get rid of CAVIUM_OCTEON_DCACHE_PREFETCH_WAR Thomas Bogendoerfer
2020-08-24 16:32 ` [PATCH 12/12] MIPS: Remove mach-*/war.h Thomas Bogendoerfer
2020-08-24 17:10 ` [PATCH 00/12] Convert WAR defines to config options Florian Fainelli
2020-08-24 17:28 ` Thomas Bogendoerfer
2020-08-24 20:37 ` Florian Fainelli
2020-09-09 12:10 ` Thomas Bogendoerfer
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