From: rmk+kernel@arm•linux.org.uk (Russell King)
To: linux-arm-kernel@lists•infradead.org
Subject: [PATCH 33/44] ARM: l2c: move way size calculation data into l2c_init_data
Date: Mon, 17 Mar 2014 00:16:19 +0000 [thread overview]
Message-ID: <E1WPLE3-0002e5-T2@rmk-PC.arm.linux.org.uk> (raw)
In-Reply-To: <20140317001302.GY21483@n2100.arm.linux.org.uk>
Move the way size calculation data (base of way size) out of the
switch statement into the provided initialisation data.
Signed-off-by: Russell King <rmk+kernel@arm•linux.org.uk>
---
arch/arm/mm/cache-l2x0.c | 29 ++++++++++++++++++++---------
1 file changed, 20 insertions(+), 9 deletions(-)
diff --git a/arch/arm/mm/cache-l2x0.c b/arch/arm/mm/cache-l2x0.c
index f9829c7165e8..44b8fd6ae2f6 100644
--- a/arch/arm/mm/cache-l2x0.c
+++ b/arch/arm/mm/cache-l2x0.c
@@ -30,6 +30,7 @@
struct l2c_init_data {
const char *type;
+ unsigned way_size_0;
void (*of_parse)(const struct device_node *, u32 *, u32 *);
void (*enable)(void __iomem *, u32);
void (*fixup)(void __iomem *, u32, struct outer_cache_fns *);
@@ -469,6 +470,7 @@ static void l2c210_resume(void)
static const struct l2c_init_data l2c210_data __initconst = {
.type = "L2C-210",
+ .way_size_0 = SZ_8K,
.enable = l2c210_enable,
.outer_cache = {
.inv_range = l2c210_inv_range,
@@ -612,6 +614,7 @@ static void l2c220_sync(void)
static const struct l2c_init_data l2c220_data = {
.type = "L2C-220",
+ .way_size_0 = SZ_8K,
.enable = l2c210_enable,
.outer_cache = {
.inv_range = l2c220_inv_range,
@@ -853,6 +856,7 @@ static void __init l2c310_fixup(void __iomem *base, u32 cache_id,
static const struct l2c_init_data l2c310_init_fns __initconst = {
.type = "L2C-310",
+ .way_size_0 = SZ_8K,
.enable = l2c310_enable,
.fixup = l2c310_fixup,
.save = l2c310_save,
@@ -872,10 +876,8 @@ static void __init __l2c_init(const struct l2c_init_data *data,
u32 aux_val, u32 aux_mask, u32 cache_id)
{
struct outer_cache_fns fns;
+ unsigned way_size_bits, ways;
u32 aux;
- u32 way_size = 0;
- int ways;
- int way_size_shift = L2X0_WAY_SIZE_SHIFT;
/*
* It is strange to save the register state before initialisation,
@@ -906,7 +908,6 @@ static void __init __l2c_init(const struct l2c_init_data *data,
case AURORA_CACHE_ID:
ways = (aux >> 13) & 0xf;
ways = 2 << ((ways + 1) >> 2);
- way_size_shift = AURORA_WAY_SIZE_SHIFT;
break;
default:
@@ -918,12 +919,15 @@ static void __init __l2c_init(const struct l2c_init_data *data,
l2x0_way_mask = (1 << ways) - 1;
/*
- * L2 cache Size = Way size * Number of ways
+ * way_size_0 is the size that a way_size value of zero would be
+ * given the calculation: way_size = way_size_0 << way_size_bits.
+ * So, if way_size_bits=0 is reserved, but way_size_bits=1 is 16k,
+ * then way_size_0 would be 8k.
+ *
+ * L2 cache size = number of ways * way size.
*/
- way_size = (aux & L2X0_AUX_CTRL_WAY_SIZE_MASK) >> 17;
- way_size = 1 << (way_size + way_size_shift);
-
- l2x0_size = ways * way_size * SZ_1K;
+ way_size_bits = (aux & L2X0_AUX_CTRL_WAY_SIZE_MASK) >> 17;
+ l2x0_size = ways * (data->way_size_0 << way_size_bits);
fns = data->outer_cache;
if (data->fixup)
@@ -1020,6 +1024,7 @@ static void __init l2x0_of_parse(const struct device_node *np,
static const struct l2c_init_data of_l2c210_data __initconst = {
.type = "L2C-210",
+ .way_size_0 = SZ_8K,
.of_parse = l2x0_of_parse,
.enable = l2c210_enable,
.outer_cache = {
@@ -1035,6 +1040,7 @@ static const struct l2c_init_data of_l2c210_data __initconst = {
static const struct l2c_init_data of_l2c220_data __initconst = {
.type = "L2C-220",
+ .way_size_0 = SZ_8K,
.of_parse = l2x0_of_parse,
.enable = l2c210_enable,
.outer_cache = {
@@ -1084,6 +1090,7 @@ static void __init l2c310_of_parse(const struct device_node *np,
static const struct l2c_init_data of_l2c310_data __initconst = {
.type = "L2C-310",
+ .way_size_0 = SZ_8K,
.of_parse = l2c310_of_parse,
.enable = l2c310_enable,
.fixup = l2c310_fixup,
@@ -1266,6 +1273,7 @@ static void __init aurora_of_parse(const struct device_node *np,
static const struct l2c_init_data of_aurora_with_outer_data __initconst = {
.type = "Aurora",
+ .way_size_0 = SZ_4K,
.of_parse = aurora_of_parse,
.enable = aurora_enable,
.fixup = aurora_fixup,
@@ -1283,6 +1291,7 @@ static const struct l2c_init_data of_aurora_with_outer_data __initconst = {
static const struct l2c_init_data of_aurora_no_outer_data __initconst = {
.type = "Aurora",
+ .way_size_0 = SZ_4K,
.of_parse = aurora_of_parse,
.enable = aurora_enable_no_outer,
.fixup = aurora_fixup,
@@ -1435,6 +1444,7 @@ static void bcm_flush_range(unsigned long start, unsigned long end)
static const struct l2c_init_data of_bcm_l2x0_data __initconst = {
.type = "BCM-L2C-310",
+ .way_size_0 = SZ_8K,
.of_parse = l2c310_of_parse,
.enable = l2c310_enable,
.fixup = l2c310_fixup,
@@ -1474,6 +1484,7 @@ static void tauros3_resume(void)
static const struct l2c_init_data of_tauros3_data __initconst = {
.type = "Tauros3",
+ .way_size_0 = SZ_8K, /* FIXME: a guess */
.enable = l2x0_enable,
.save = tauros3_save,
/* Tauros3 broadcasts L1 cache operations to L2 */
--
1.8.3.1
next prev parent reply other threads:[~2014-03-17 0:16 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 ` [PATCH 26/44] ARM: l2c: implement L2C-310 erratum 727915 as a method override Russell King
2014-03-17 0:15 ` [PATCH 27/44] ARM: l2c: Implement L2C-310 erratum 588369 " 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 ` Russell King [this message]
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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