lkml.org 
[lkml]   [2016]   [Jul]   [18]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH net-next v3 04/12] net: dsa: mv88e6xxx: extract trunk mapping
Date
The Trunk Mask and Trunk Mapping registers are two Global 2 indirect
accesses to trunking configuration.

Add helpers for these tables and simplify the Global 2 setup.

Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
---
drivers/net/dsa/mv88e6xxx/chip.c | 68 ++++++++++++++++++++++++-----------
drivers/net/dsa/mv88e6xxx/mv88e6xxx.h | 1 +
2 files changed, 48 insertions(+), 21 deletions(-)

diff --git a/drivers/net/dsa/mv88e6xxx/chip.c b/drivers/net/dsa/mv88e6xxx/chip.c
index 9b2525a..d18e5c8 100644
--- a/drivers/net/dsa/mv88e6xxx/chip.c
+++ b/drivers/net/dsa/mv88e6xxx/chip.c
@@ -3151,6 +3151,49 @@ static int mv88e6xxx_g2_set_device_mapping(struct mv88e6xxx_chip *chip)
return err;
}

+static int mv88e6xxx_g2_trunk_mask_write(struct mv88e6xxx_chip *chip, int num,
+ bool hask, u16 mask)
+{
+ const u16 port_mask = BIT(chip->info->num_ports) - 1;
+ u16 val = (num << 12) | (mask & port_mask);
+
+ if (hask)
+ val |= GLOBAL2_TRUNK_MASK_HASK;
+
+ return mv88e6xxx_update(chip, REG_GLOBAL2, GLOBAL2_TRUNK_MASK, val);
+}
+
+static int mv88e6xxx_g2_trunk_mapping_write(struct mv88e6xxx_chip *chip, int id,
+ u16 map)
+{
+ const u16 port_mask = BIT(chip->info->num_ports) - 1;
+ u16 val = (id << 11) | (map & port_mask);
+
+ return mv88e6xxx_update(chip, REG_GLOBAL2, GLOBAL2_TRUNK_MAPPING, val);
+}
+
+static int mv88e6xxx_g2_clear_trunk(struct mv88e6xxx_chip *chip)
+{
+ const u16 port_mask = BIT(chip->info->num_ports) - 1;
+ int i, err;
+
+ /* Clear all eight possible Trunk Mask vectors */
+ for (i = 0; i < 8; ++i) {
+ err = mv88e6xxx_g2_trunk_mask_write(chip, i, false, port_mask);
+ if (err)
+ return err;
+ }
+
+ /* Clear all sixteen possible Trunk ID routing vectors */
+ for (i = 0; i < 16; ++i) {
+ err = mv88e6xxx_g2_trunk_mapping_write(chip, i, 0);
+ if (err)
+ return err;
+ }
+
+ return 0;
+}
+
static int mv88e6xxx_g2_setup(struct mv88e6xxx_chip *chip)
{
int err;
@@ -3180,27 +3223,10 @@ static int mv88e6xxx_g2_setup(struct mv88e6xxx_chip *chip)
if (err)
return err;

- /* Clear all trunk masks. */
- for (i = 0; i < 8; i++) {
- err = _mv88e6xxx_reg_write(chip, REG_GLOBAL2,
- GLOBAL2_TRUNK_MASK,
- 0x8000 |
- (i << GLOBAL2_TRUNK_MASK_NUM_SHIFT) |
- ((1 << chip->info->num_ports) - 1));
- if (err)
- return err;
- }
-
- /* Clear all trunk mappings. */
- for (i = 0; i < 16; i++) {
- err = _mv88e6xxx_reg_write(
- chip, REG_GLOBAL2,
- GLOBAL2_TRUNK_MAPPING,
- GLOBAL2_TRUNK_MAPPING_UPDATE |
- (i << GLOBAL2_TRUNK_MAPPING_ID_SHIFT));
- if (err)
- return err;
- }
+ /* Clear all trunk masks and mapping. */
+ err = mv88e6xxx_g2_clear_trunk(chip);
+ if (err)
+ return err;

if (mv88e6xxx_6352_family(chip) || mv88e6xxx_6351_family(chip) ||
mv88e6xxx_6165_family(chip) || mv88e6xxx_6097_family(chip) ||
diff --git a/drivers/net/dsa/mv88e6xxx/mv88e6xxx.h b/drivers/net/dsa/mv88e6xxx/mv88e6xxx.h
index 390dac5..876d9ea 100644
--- a/drivers/net/dsa/mv88e6xxx/mv88e6xxx.h
+++ b/drivers/net/dsa/mv88e6xxx/mv88e6xxx.h
@@ -294,6 +294,7 @@
#define GLOBAL2_TRUNK_MASK 0x07
#define GLOBAL2_TRUNK_MASK_UPDATE BIT(15)
#define GLOBAL2_TRUNK_MASK_NUM_SHIFT 12
+#define GLOBAL2_TRUNK_MASK_HASK BIT(11)
#define GLOBAL2_TRUNK_MAPPING 0x08
#define GLOBAL2_TRUNK_MAPPING_UPDATE BIT(15)
#define GLOBAL2_TRUNK_MAPPING_ID_SHIFT 11
--
2.9.0
\
 
 \ /
  Last update: 2016-07-19 03:21    [W:0.166 / U:0.044 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site