From: rmk+kernel@arm•linux.org.uk (Russell King)
To: linux-arm-kernel@lists•infradead.org
Subject: [PATCH 26/44] ARM: l2c: implement L2C-310 erratum 727915 as a method override
Date: Mon, 17 Mar 2014 00:15:44 +0000 [thread overview]
Message-ID: <E1WPLDU-0002dc-3R@rmk-PC.arm.linux.org.uk> (raw)
In-Reply-To: <20140317001302.GY21483@n2100.arm.linux.org.uk>
Implement L2C-310 erratum 727915 by overriding the flush_all method
in the outer_cache operations structure. This allows us to sensibly
contain the erratum code in one place without affecting other
locations or implementations.
Signed-off-by: Russell King <rmk+kernel@arm•linux.org.uk>
---
arch/arm/mm/cache-l2x0.c | 20 ++++++++++++++++++++
1 file changed, 20 insertions(+)
diff --git a/arch/arm/mm/cache-l2x0.c b/arch/arm/mm/cache-l2x0.c
index 4930f63d5f4a..3371617a1c8b 100644
--- a/arch/arm/mm/cache-l2x0.c
+++ b/arch/arm/mm/cache-l2x0.c
@@ -524,6 +524,19 @@ static void l2c310_set_debug(unsigned long val)
writel_relaxed(val, l2x0_base + L2X0_DEBUG_CTRL);
}
+static void l2c310_flush_all_erratum(void)
+{
+ void __iomem *base = l2x0_base;
+ unsigned long flags;
+
+ raw_spin_lock_irqsave(&l2x0_lock, flags);
+ l2c_set_debug(base, 0x03);
+ __l2c_op_way(base + L2X0_CLEAN_INV_WAY);
+ l2c_set_debug(base, 0x00);
+ __l2c210_cache_sync(base);
+ raw_spin_unlock_irqrestore(&l2x0_lock, flags);
+}
+
static void l2c310_enable(void __iomem *base, u32 aux)
{
/* PL310 has 8 lock registers */
@@ -598,6 +611,13 @@ static void __init l2c310_fixup(void __iomem *base, u32 cache_id,
if (revision <= L310_CACHE_ID_RTL_R3P0)
fns->set_debug = l2c310_set_debug;
+ if (IS_ENABLED(CONFIG_PL310_ERRATA_727915) &&
+ revision >= L310_CACHE_ID_RTL_R2P0 &&
+ revision < L310_CACHE_ID_RTL_R3P1) {
+ fns->flush_all = l2c310_flush_all_erratum;
+ errata[n++] = "727915";
+ }
+
if (IS_ENABLED(CONFIG_PL310_ERRATA_753970) &&
revision == L310_CACHE_ID_RTL_R3P0) {
sync_reg_offset = L2X0_DUMMY_REG;
--
1.8.3.1
next prev parent reply other threads:[~2014-03-17 0:15 UTC|newest]
Thread overview: 51+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-03-17 0:13 [PATCH 00/44] outer cache changes Russell King - ARM Linux
2014-03-17 0:13 ` [PATCH 01/44] ARM: l2c: remove outer_inv_all() method Russell King
2014-03-17 0:13 ` [PATCH 02/44] ARM: l2c: remove unnecessary call to outer_flush_all() Russell King
2014-03-17 0:13 ` [PATCH 03/44] ARM: l2c: avoid calling outer_flush_all() unnecessarily (Spear) Russell King
2014-03-17 0:13 ` [PATCH 04/44] ARM: l2c: add helper for L2 cache controller DT IDs Russell King
2014-03-26 20:30 ` Rob Herring
2014-03-17 0:13 ` [PATCH 05/44] ARM: l2c: tidy up l2x0_of_data declarations Russell King
2014-03-17 0:14 ` [PATCH 06/44] ARM: l2c: rename OF specific things, making l2x0_of_data available to all Russell King
2014-03-17 0:14 ` [PATCH 07/44] ARM: l2c: provide generic function for calling set_debug method Russell King
2014-03-17 0:14 ` [PATCH 08/44] ARM: l2c: split out cache unlock code Russell King
2014-03-17 0:14 ` [PATCH 09/44] ARM: l2c: provide generic helper for way-based operations Russell King
2014-03-17 0:14 ` [PATCH 10/44] ARM: l2c: rename cache_wait_way() Russell King
2014-03-17 0:14 ` [PATCH 11/44] ARM: l2c: use add L2C revision constants Russell King
2014-03-17 0:14 ` [PATCH 12/44] ARM: l2c: clean up OF initialisation a bit Russell King
2014-03-17 0:14 ` [PATCH 13/44] ARM: l2c: pass iomem address into data->save function Russell King
2014-03-17 0:14 ` [PATCH 14/44] ARM: l2c: move l2c save function to __l2c_init() Russell King
2014-03-17 0:14 ` [PATCH 15/44] ARM: l2c: provide enable method Russell King
2014-03-17 0:14 ` [PATCH 16/44] ARM: l2c: move aurora broadcast setup to enable function Russell King
2014-03-17 0:14 ` [PATCH 17/44] ARM: l2c: group implementation specific code together Russell King
2014-03-17 0:15 ` [PATCH 18/44] ARM: l2c: implement fixups for L2 cache controller quirks/errata Russell King
2014-03-17 0:15 ` [PATCH 19/44] ARM: l2c: clean up L2 cache initialisation messages Russell King
2014-03-17 0:15 ` [PATCH 20/44] ARM: l2c: split L2C-310 enable function from l2x0 code Russell King
2014-03-17 0:15 ` [PATCH 21/44] ARM: l2c: move and add ARM L2C-2x0/L2C-310 save/resume code to non-OF Russell King
2014-03-17 0:15 ` [PATCH 22/44] ARM: l2c: clean up save/resume functions Russell King
2014-03-17 0:15 ` [PATCH 23/44] ARM: l2c: simplify l2x0 unlocking code Russell King
2014-03-17 0:15 ` [PATCH 24/44] ARM: l2c: move pl310_set_debug() into l2c-310 code Russell King
2014-03-17 0:15 ` [PATCH 25/44] ARM: l2c: add L2C-210 specific handlers Russell King
2014-03-17 0:15 ` Russell King [this message]
2014-03-17 0:15 ` [PATCH 27/44] ARM: l2c: Implement L2C-310 erratum 588369 as a method override Russell King
2014-03-17 0:15 ` [PATCH 28/44] ARM: l2c: use L2C-210 handlers for L2C-310 errata-less implementations Russell King
2014-03-17 0:15 ` [PATCH 29/44] ARM: l2c: add L2C-220 specific handlers Russell King
2014-03-17 0:16 ` [PATCH 30/44] ARM: l2c: remove obsolete l2x0 ops for non-OF init Russell King
2014-03-17 0:16 ` [PATCH 31/44] ARM: l2c: move type string into l2c_init_data structure Russell King
2014-03-17 0:16 ` [PATCH 32/44] ARM: l2c: add decode for L2C-220 cache ways Russell King
2014-03-17 0:16 ` [PATCH 33/44] ARM: l2c: move way size calculation data into l2c_init_data Russell King
2014-03-17 0:16 ` [PATCH 34/44] ARM: outer cache: add documentation of outer cache functions Russell King
2014-03-17 0:16 ` [PATCH 35/44] ARM: outer cache: add WARN_ON() to outer_disable() Russell King
2014-03-17 0:16 ` [PATCH 36/44] ARM: l2c: move errata configuration options to arch/arm/mm/Kconfig Russell King
2014-03-17 0:16 ` [PATCH 37/44] ARM: l2c: provide generic hook to intercept writes to secure registers Russell King
2014-03-17 0:16 ` [PATCH 38/44] ARM: l2c: OMAP: implement new write_sec method Russell King
2014-03-17 0:16 ` [PATCH 39/44] ARM: l2c: highbank: " Russell King
2014-03-26 20:35 ` Rob Herring
2014-03-17 0:16 ` [PATCH 40/44] ARM: l2c: ux500: implement dummy " Russell King
2014-03-17 0:17 ` [PATCH 41/44] ARM: l2c: remove old .set_debug method Russell King
2014-03-17 0:17 ` [PATCH 42/44] ARM: l2c: implement L2C-310 erratum 752271 in core L2C code Russell King
2014-03-17 0:17 ` [PATCH 43/44] ARM: l2c: rename all L2C-310 constants with an L310_ prefix Russell King
2014-03-17 0:17 ` [PATCH 44/44] ARM: l2c: add L2C-310 power control DT properties Russell King
2014-03-26 21:08 ` Rob Herring
2014-03-28 13:29 ` Russell King - ARM Linux
2014-03-26 20:05 ` [PATCH 00/44] outer cache changes Gregory CLEMENT
2014-03-28 18:50 ` Nishanth Menon
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