This series is purely non functional.
It changes the lan9303_enable_packet_processing,
lan9303_disable_packet_processing() to pass port number (0,1,2) as
parameter instead of port offset. This aligns them with
other functions in the module, and makes it possible to simplify the code.
The lan9303_enable_packet_processing, lan9303_disable_packet_processing
functions operate on port. Therefore rename the functions to reflect that
as well.
Reviewer pointed out lan9303_get_ethtool_stats would be better off with
the use of a lan9303_read_switch_port(). So that was added to the series.
Review welcome!
Changes v2 -> v3:
- Patch 1: Removed the change in lan9303_get_ethtool_stats
- Added patch 4: rename lan9303_xxx_packet_processing
- Added patch 5: refactor lan9303_get_ethtool_stats
Changes v1 -> v2:
- introduced lan9303_write_switch_port() in first patch
- inserted LAN9303_NUM_PORTS patch
- Use LAN9303_NUM_PORTS in last patch. Plus whitespace change.
Egil Hjelmeland (5):
net: dsa: lan9303: Change lan9303_xxx_packet_processing() port param.
net: dsa: lan9303: define LAN9303_NUM_PORTS 3
net: dsa: lan9303: Simplify lan9303_xxx_packet_processing() usage
net: dsa: lan9303: Rename lan9303_xxx_packet_processing()
net: dsa: lan9303: refactor lan9303_get_ethtool_stats
drivers/net/dsa/lan9303-core.c | 110 ++++++++++++++++++++++-------------------
1 file changed, 59 insertions(+), 51 deletions(-)
--
2.11.0
lan9303_enable_packet_processing, lan9303_disable_packet_processing()
Pass port number (0,1,2) as parameter instead of port offset.
Because other functions in the module pass port numbers.
And to enable simplifications in following patch.
Introduce lan9303_write_switch_port().
Signed-off-by: Egil Hjelmeland <[email protected]>
---
drivers/net/dsa/lan9303-core.c | 60 ++++++++++++++++++++++--------------------
1 file changed, 32 insertions(+), 28 deletions(-)
diff --git a/drivers/net/dsa/lan9303-core.c b/drivers/net/dsa/lan9303-core.c
index 8e430d1ee297..fa19e320c5a8 100644
--- a/drivers/net/dsa/lan9303-core.c
+++ b/drivers/net/dsa/lan9303-core.c
@@ -159,9 +159,7 @@
# define LAN9303_BM_EGRSS_PORT_TYPE_SPECIAL_TAG_PORT1 (BIT(9) | BIT(8))
# define LAN9303_BM_EGRSS_PORT_TYPE_SPECIAL_TAG_PORT0 (BIT(1) | BIT(0))
-#define LAN9303_PORT_0_OFFSET 0x400
-#define LAN9303_PORT_1_OFFSET 0x800
-#define LAN9303_PORT_2_OFFSET 0xc00
+#define LAN9303_SWITCH_PORT_REG(port, reg0) (0x400 * (port) + (reg0))
/* the built-in PHYs are of type LAN911X */
#define MII_LAN911X_SPECIAL_MODES 0x12
@@ -428,6 +426,13 @@ static int lan9303_read_switch_reg(struct lan9303 *chip, u16 regnum, u32 *val)
return ret;
}
+static int lan9303_write_switch_port(
+ struct lan9303 *chip, int port, u16 regnum, u32 val)
+{
+ return lan9303_write_switch_reg(
+ chip, LAN9303_SWITCH_PORT_REG(port, regnum), val);
+}
+
static int lan9303_detect_phy_setup(struct lan9303 *chip)
{
int reg;
@@ -458,24 +463,23 @@ static int lan9303_detect_phy_setup(struct lan9303 *chip)
return 0;
}
-#define LAN9303_MAC_RX_CFG_OFFS (LAN9303_MAC_RX_CFG_0 - LAN9303_PORT_0_OFFSET)
-#define LAN9303_MAC_TX_CFG_OFFS (LAN9303_MAC_TX_CFG_0 - LAN9303_PORT_0_OFFSET)
-
static int lan9303_disable_packet_processing(struct lan9303 *chip,
unsigned int port)
{
int ret;
/* disable RX, but keep register reset default values else */
- ret = lan9303_write_switch_reg(chip, LAN9303_MAC_RX_CFG_OFFS + port,
- LAN9303_MAC_RX_CFG_X_REJECT_MAC_TYPES);
+ ret = lan9303_write_switch_port(
+ chip, port, LAN9303_MAC_RX_CFG_0,
+ LAN9303_MAC_RX_CFG_X_REJECT_MAC_TYPES);
if (ret)
return ret;
/* disable TX, but keep register reset default values else */
- return lan9303_write_switch_reg(chip, LAN9303_MAC_TX_CFG_OFFS + port,
- LAN9303_MAC_TX_CFG_X_TX_IFG_CONFIG_DEFAULT |
- LAN9303_MAC_TX_CFG_X_TX_PAD_ENABLE);
+ return lan9303_write_switch_port(
+ chip, port, LAN9303_MAC_TX_CFG_0,
+ LAN9303_MAC_TX_CFG_X_TX_IFG_CONFIG_DEFAULT |
+ LAN9303_MAC_TX_CFG_X_TX_PAD_ENABLE);
}
static int lan9303_enable_packet_processing(struct lan9303 *chip,
@@ -484,17 +488,19 @@ static int lan9303_enable_packet_processing(struct lan9303 *chip,
int ret;
/* enable RX and keep register reset default values else */
- ret = lan9303_write_switch_reg(chip, LAN9303_MAC_RX_CFG_OFFS + port,
- LAN9303_MAC_RX_CFG_X_REJECT_MAC_TYPES |
- LAN9303_MAC_RX_CFG_X_RX_ENABLE);
+ ret = lan9303_write_switch_port(
+ chip, port, LAN9303_MAC_RX_CFG_0,
+ LAN9303_MAC_RX_CFG_X_REJECT_MAC_TYPES |
+ LAN9303_MAC_RX_CFG_X_RX_ENABLE);
if (ret)
return ret;
/* enable TX and keep register reset default values else */
- return lan9303_write_switch_reg(chip, LAN9303_MAC_TX_CFG_OFFS + port,
- LAN9303_MAC_TX_CFG_X_TX_IFG_CONFIG_DEFAULT |
- LAN9303_MAC_TX_CFG_X_TX_PAD_ENABLE |
- LAN9303_MAC_TX_CFG_X_TX_ENABLE);
+ return lan9303_write_switch_port(
+ chip, port, LAN9303_MAC_TX_CFG_0,
+ LAN9303_MAC_TX_CFG_X_TX_IFG_CONFIG_DEFAULT |
+ LAN9303_MAC_TX_CFG_X_TX_PAD_ENABLE |
+ LAN9303_MAC_TX_CFG_X_TX_ENABLE);
}
/* We want a special working switch:
@@ -558,13 +564,13 @@ static int lan9303_disable_processing(struct lan9303 *chip)
{
int ret;
- ret = lan9303_disable_packet_processing(chip, LAN9303_PORT_0_OFFSET);
+ ret = lan9303_disable_packet_processing(chip, 0);
if (ret)
return ret;
- ret = lan9303_disable_packet_processing(chip, LAN9303_PORT_1_OFFSET);
+ ret = lan9303_disable_packet_processing(chip, 1);
if (ret)
return ret;
- return lan9303_disable_packet_processing(chip, LAN9303_PORT_2_OFFSET);
+ return lan9303_disable_packet_processing(chip, 2);
}
static int lan9303_check_device(struct lan9303 *chip)
@@ -634,7 +640,7 @@ static int lan9303_setup(struct dsa_switch *ds)
if (ret)
dev_err(chip->dev, "failed to separate ports %d\n", ret);
- ret = lan9303_enable_packet_processing(chip, LAN9303_PORT_0_OFFSET);
+ ret = lan9303_enable_packet_processing(chip, 0);
if (ret)
dev_err(chip->dev, "failed to re-enable switching %d\n", ret);
@@ -757,11 +763,9 @@ static int lan9303_port_enable(struct dsa_switch *ds, int port,
/* enable internal packet processing */
switch (port) {
case 1:
- return lan9303_enable_packet_processing(chip,
- LAN9303_PORT_1_OFFSET);
+ return lan9303_enable_packet_processing(chip, port);
case 2:
- return lan9303_enable_packet_processing(chip,
- LAN9303_PORT_2_OFFSET);
+ return lan9303_enable_packet_processing(chip, port);
default:
dev_dbg(chip->dev,
"Error: request to power up invalid port %d\n", port);
@@ -778,12 +782,12 @@ static void lan9303_port_disable(struct dsa_switch *ds, int port,
/* disable internal packet processing */
switch (port) {
case 1:
- lan9303_disable_packet_processing(chip, LAN9303_PORT_1_OFFSET);
+ lan9303_disable_packet_processing(chip, port);
lan9303_phy_write(ds, chip->phy_addr_sel_strap + 1,
MII_BMCR, BMCR_PDOWN);
break;
case 2:
- lan9303_disable_packet_processing(chip, LAN9303_PORT_2_OFFSET);
+ lan9303_disable_packet_processing(chip, port);
lan9303_phy_write(ds, chip->phy_addr_sel_strap + 2,
MII_BMCR, BMCR_PDOWN);
break;
--
2.11.0
In lan9303_get_ethtool_stats: Get rid of 0x400 constant magic
by using new lan9303_read_switch_reg() inside loop.
Reduced scope of two variables.
Signed-off-by: Egil Hjelmeland <[email protected]>
---
drivers/net/dsa/lan9303-core.c | 26 ++++++++++++++++----------
1 file changed, 16 insertions(+), 10 deletions(-)
diff --git a/drivers/net/dsa/lan9303-core.c b/drivers/net/dsa/lan9303-core.c
index 6f409755ba1a..5aaa46146c27 100644
--- a/drivers/net/dsa/lan9303-core.c
+++ b/drivers/net/dsa/lan9303-core.c
@@ -435,6 +435,13 @@ static int lan9303_write_switch_port(
chip, LAN9303_SWITCH_PORT_REG(port, regnum), val);
}
+static int lan9303_read_switch_port(
+ struct lan9303 *chip, int port, u16 regnum, u32 *val)
+{
+ return lan9303_read_switch_reg(
+ chip, LAN9303_SWITCH_PORT_REG(port, regnum), val);
+}
+
static int lan9303_detect_phy_setup(struct lan9303 *chip)
{
int reg;
@@ -709,19 +716,18 @@ static void lan9303_get_ethtool_stats(struct dsa_switch *ds, int port,
uint64_t *data)
{
struct lan9303 *chip = ds->priv;
- u32 reg;
- unsigned int u, poff;
- int ret;
-
- poff = port * 0x400;
+ unsigned int u;
for (u = 0; u < ARRAY_SIZE(lan9303_mib); u++) {
- ret = lan9303_read_switch_reg(chip,
- lan9303_mib[u].offset + poff,
- ®);
+ u32 reg;
+ int ret;
+
+ ret = lan9303_read_switch_port(
+ chip, port, lan9303_mib[u].offset, ®);
+
if (ret)
- dev_warn(chip->dev, "Reading status reg %u failed\n",
- lan9303_mib[u].offset + poff);
+ dev_warn(chip->dev, "Reading status port %d reg %u failed\n",
+ port, lan9303_mib[u].offset);
data[u] = reg;
}
}
--
2.11.0
The lan9303_enable_packet_processing, lan9303_disable_packet_processing
functions operate on port, so the names should reflect that.
And to align with lan9303_disable_processing(), rename:
lan9303_enable_packet_processing -> lan9303_enable_processing_port
lan9303_disable_packet_processing -> lan9303_disable_processing_port
Signed-off-by: Egil Hjelmeland <[email protected]>
---
drivers/net/dsa/lan9303-core.c | 16 ++++++++--------
1 file changed, 8 insertions(+), 8 deletions(-)
diff --git a/drivers/net/dsa/lan9303-core.c b/drivers/net/dsa/lan9303-core.c
index 31fe66fbe39a..6f409755ba1a 100644
--- a/drivers/net/dsa/lan9303-core.c
+++ b/drivers/net/dsa/lan9303-core.c
@@ -465,8 +465,8 @@ static int lan9303_detect_phy_setup(struct lan9303 *chip)
return 0;
}
-static int lan9303_disable_packet_processing(struct lan9303 *chip,
- unsigned int port)
+static int lan9303_disable_processing_port(struct lan9303 *chip,
+ unsigned int port)
{
int ret;
@@ -484,8 +484,8 @@ static int lan9303_disable_packet_processing(struct lan9303 *chip,
LAN9303_MAC_TX_CFG_X_TX_PAD_ENABLE);
}
-static int lan9303_enable_packet_processing(struct lan9303 *chip,
- unsigned int port)
+static int lan9303_enable_processing_port(struct lan9303 *chip,
+ unsigned int port)
{
int ret;
@@ -567,7 +567,7 @@ static int lan9303_disable_processing(struct lan9303 *chip)
int p;
for (p = 0; p < LAN9303_NUM_PORTS; p++) {
- int ret = lan9303_disable_packet_processing(chip, p);
+ int ret = lan9303_disable_processing_port(chip, p);
if (ret)
return ret;
@@ -643,7 +643,7 @@ static int lan9303_setup(struct dsa_switch *ds)
if (ret)
dev_err(chip->dev, "failed to separate ports %d\n", ret);
- ret = lan9303_enable_packet_processing(chip, 0);
+ ret = lan9303_enable_processing_port(chip, 0);
if (ret)
dev_err(chip->dev, "failed to re-enable switching %d\n", ret);
@@ -767,7 +767,7 @@ static int lan9303_port_enable(struct dsa_switch *ds, int port,
switch (port) {
case 1:
case 2:
- return lan9303_enable_packet_processing(chip, port);
+ return lan9303_enable_processing_port(chip, port);
default:
dev_dbg(chip->dev,
"Error: request to power up invalid port %d\n", port);
@@ -785,7 +785,7 @@ static void lan9303_port_disable(struct dsa_switch *ds, int port,
switch (port) {
case 1:
case 2:
- lan9303_disable_packet_processing(chip, port);
+ lan9303_disable_processing_port(chip, port);
lan9303_phy_write(ds, chip->phy_addr_sel_strap + port,
MII_BMCR, BMCR_PDOWN);
break;
--
2.11.0
Will be used instead of '3' in upcomming patches.
Signed-off-by: Egil Hjelmeland <[email protected]>
---
drivers/net/dsa/lan9303-core.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/net/dsa/lan9303-core.c b/drivers/net/dsa/lan9303-core.c
index fa19e320c5a8..126e8b84bdf0 100644
--- a/drivers/net/dsa/lan9303-core.c
+++ b/drivers/net/dsa/lan9303-core.c
@@ -20,6 +20,8 @@
#include "lan9303.h"
+#define LAN9303_NUM_PORTS 3
+
/* 13.2 System Control and Status Registers
* Multiply register number by 4 to get address offset.
*/
--
2.11.0
Simplify usage of lan9303_enable_packet_processing,
lan9303_disable_packet_processing()
Signed-off-by: Egil Hjelmeland <[email protected]>
---
drivers/net/dsa/lan9303-core.c | 24 ++++++++++--------------
1 file changed, 10 insertions(+), 14 deletions(-)
diff --git a/drivers/net/dsa/lan9303-core.c b/drivers/net/dsa/lan9303-core.c
index 126e8b84bdf0..31fe66fbe39a 100644
--- a/drivers/net/dsa/lan9303-core.c
+++ b/drivers/net/dsa/lan9303-core.c
@@ -564,15 +564,16 @@ static int lan9303_handle_reset(struct lan9303 *chip)
/* stop processing packets for all ports */
static int lan9303_disable_processing(struct lan9303 *chip)
{
- int ret;
+ int p;
- ret = lan9303_disable_packet_processing(chip, 0);
- if (ret)
- return ret;
- ret = lan9303_disable_packet_processing(chip, 1);
- if (ret)
- return ret;
- return lan9303_disable_packet_processing(chip, 2);
+ for (p = 0; p < LAN9303_NUM_PORTS; p++) {
+ int ret = lan9303_disable_packet_processing(chip, p);
+
+ if (ret)
+ return ret;
+ }
+
+ return 0;
}
static int lan9303_check_device(struct lan9303 *chip)
@@ -765,7 +766,6 @@ static int lan9303_port_enable(struct dsa_switch *ds, int port,
/* enable internal packet processing */
switch (port) {
case 1:
- return lan9303_enable_packet_processing(chip, port);
case 2:
return lan9303_enable_packet_processing(chip, port);
default:
@@ -784,13 +784,9 @@ static void lan9303_port_disable(struct dsa_switch *ds, int port,
/* disable internal packet processing */
switch (port) {
case 1:
- lan9303_disable_packet_processing(chip, port);
- lan9303_phy_write(ds, chip->phy_addr_sel_strap + 1,
- MII_BMCR, BMCR_PDOWN);
- break;
case 2:
lan9303_disable_packet_processing(chip, port);
- lan9303_phy_write(ds, chip->phy_addr_sel_strap + 2,
+ lan9303_phy_write(ds, chip->phy_addr_sel_strap + port,
MII_BMCR, BMCR_PDOWN);
break;
default:
--
2.11.0
On Thu, Aug 03, 2017 at 11:45:03AM +0200, Egil Hjelmeland wrote:
> lan9303_enable_packet_processing, lan9303_disable_packet_processing()
> Pass port number (0,1,2) as parameter instead of port offset.
> Because other functions in the module pass port numbers.
> And to enable simplifications in following patch.
>
> Introduce lan9303_write_switch_port().
>
> Signed-off-by: Egil Hjelmeland <[email protected]>
Reviewed-by: Andrew Lunn <[email protected]>
Andrew
On Thu, Aug 03, 2017 at 11:45:04AM +0200, Egil Hjelmeland wrote:
> Will be used instead of '3' in upcomming patches.
>
> Signed-off-by: Egil Hjelmeland <[email protected]>
Signed-off-by: Andrew Lunn <[email protected]>
Andrew
On Thu, Aug 03, 2017 at 11:45:05AM +0200, Egil Hjelmeland wrote:
> Simplify usage of lan9303_enable_packet_processing,
> lan9303_disable_packet_processing()
>
> Signed-off-by: Egil Hjelmeland <[email protected]>
Reviewed-by: Andrew Lunn <[email protected]>
Andrew
On Thu, Aug 03, 2017 at 11:45:06AM +0200, Egil Hjelmeland wrote:
> The lan9303_enable_packet_processing, lan9303_disable_packet_processing
> functions operate on port, so the names should reflect that.
> And to align with lan9303_disable_processing(), rename:
>
> lan9303_enable_packet_processing -> lan9303_enable_processing_port
> lan9303_disable_packet_processing -> lan9303_disable_processing_port
>
> Signed-off-by: Egil Hjelmeland <[email protected]>
Reviewed-by: Andrew Lunn <[email protected]>
Andrew
On Thu, Aug 03, 2017 at 11:45:07AM +0200, Egil Hjelmeland wrote:
> In lan9303_get_ethtool_stats: Get rid of 0x400 constant magic
> by using new lan9303_read_switch_reg() inside loop.
> Reduced scope of two variables.
>
> Signed-off-by: Egil Hjelmeland <[email protected]>
Reviewed-by: Andrew Lunn <[email protected]>
Andrew
On 08/03/2017 02:45 AM, Egil Hjelmeland wrote:
> Will be used instead of '3' in upcomming patches.
>
> Signed-off-by: Egil Hjelmeland <[email protected]>
Reviewed-by: Florian Fainelli <[email protected]>
--
Florian
On 08/03/2017 02:45 AM, Egil Hjelmeland wrote:
> In lan9303_get_ethtool_stats: Get rid of 0x400 constant magic
> by using new lan9303_read_switch_reg() inside loop.
> Reduced scope of two variables.
>
> Signed-off-by: Egil Hjelmeland <[email protected]>
> ---
> drivers/net/dsa/lan9303-core.c | 26 ++++++++++++++++----------
> 1 file changed, 16 insertions(+), 10 deletions(-)
>
> diff --git a/drivers/net/dsa/lan9303-core.c b/drivers/net/dsa/lan9303-core.c
> index 6f409755ba1a..5aaa46146c27 100644
> --- a/drivers/net/dsa/lan9303-core.c
> +++ b/drivers/net/dsa/lan9303-core.c
> @@ -435,6 +435,13 @@ static int lan9303_write_switch_port(
> chip, LAN9303_SWITCH_PORT_REG(port, regnum), val);
> }
>
> +static int lan9303_read_switch_port(
> + struct lan9303 *chip, int port, u16 regnum, u32 *val)
> +{
This indentation is really funny, why not just break it up that way:
static int lan9303_read_switch_port(struct lan9303 *chip, int port
u16 regnum, u32 *val)
{
}
This applies to patch 5 as well, other than that:
Reviewed-by: Florian Fainelli <[email protected]>
> + return lan9303_read_switch_reg(
> + chip, LAN9303_SWITCH_PORT_REG(port, regnum), val);
> +}
> +
> static int lan9303_detect_phy_setup(struct lan9303 *chip)
> {
> int reg;
> @@ -709,19 +716,18 @@ static void lan9303_get_ethtool_stats(struct dsa_switch *ds, int port,
> uint64_t *data)
> {
> struct lan9303 *chip = ds->priv;
> - u32 reg;
> - unsigned int u, poff;
> - int ret;
> -
> - poff = port * 0x400;
> + unsigned int u;
>
> for (u = 0; u < ARRAY_SIZE(lan9303_mib); u++) {
> - ret = lan9303_read_switch_reg(chip,
> - lan9303_mib[u].offset + poff,
> - ®);
> + u32 reg;
> + int ret;
> +
> + ret = lan9303_read_switch_port(
> + chip, port, lan9303_mib[u].offset, ®);
> +
> if (ret)
> - dev_warn(chip->dev, "Reading status reg %u failed\n",
> - lan9303_mib[u].offset + poff);
> + dev_warn(chip->dev, "Reading status port %d reg %u failed\n",
> + port, lan9303_mib[u].offset);
> data[u] = reg;
> }
> }
>
--
Florian
On 08/03/2017 02:45 AM, Egil Hjelmeland wrote:
> Simplify usage of lan9303_enable_packet_processing,
> lan9303_disable_packet_processing()
>
> Signed-off-by: Egil Hjelmeland <[email protected]>
Reviewed-by: Florian Fainelli <[email protected]>
took a little while to figure out that we are utilizing fall through of
the switch/case statement and that's why it's okay.
> ---
> drivers/net/dsa/lan9303-core.c | 24 ++++++++++--------------
> 1 file changed, 10 insertions(+), 14 deletions(-)
>
> diff --git a/drivers/net/dsa/lan9303-core.c b/drivers/net/dsa/lan9303-core.c
> index 126e8b84bdf0..31fe66fbe39a 100644
> --- a/drivers/net/dsa/lan9303-core.c
> +++ b/drivers/net/dsa/lan9303-core.c
> @@ -564,15 +564,16 @@ static int lan9303_handle_reset(struct lan9303 *chip)
> /* stop processing packets for all ports */
> static int lan9303_disable_processing(struct lan9303 *chip)
> {
> - int ret;
> + int p;
>
> - ret = lan9303_disable_packet_processing(chip, 0);
> - if (ret)
> - return ret;
> - ret = lan9303_disable_packet_processing(chip, 1);
> - if (ret)
> - return ret;
> - return lan9303_disable_packet_processing(chip, 2);
> + for (p = 0; p < LAN9303_NUM_PORTS; p++) {
> + int ret = lan9303_disable_packet_processing(chip, p);
> +
> + if (ret)
> + return ret;
> + }
> +
> + return 0;
> }
>
> static int lan9303_check_device(struct lan9303 *chip)
> @@ -765,7 +766,6 @@ static int lan9303_port_enable(struct dsa_switch *ds, int port,
> /* enable internal packet processing */
> switch (port) {
> case 1:
> - return lan9303_enable_packet_processing(chip, port);
> case 2:
> return lan9303_enable_packet_processing(chip, port);
> default:
> @@ -784,13 +784,9 @@ static void lan9303_port_disable(struct dsa_switch *ds, int port,
> /* disable internal packet processing */
> switch (port) {
> case 1:
> - lan9303_disable_packet_processing(chip, port);
> - lan9303_phy_write(ds, chip->phy_addr_sel_strap + 1,
> - MII_BMCR, BMCR_PDOWN);
> - break;
> case 2:
> lan9303_disable_packet_processing(chip, port);
> - lan9303_phy_write(ds, chip->phy_addr_sel_strap + 2,
> + lan9303_phy_write(ds, chip->phy_addr_sel_strap + port,
> MII_BMCR, BMCR_PDOWN);
> break;
> default:
>
--
Florian
On 08/03/2017 02:45 AM, Egil Hjelmeland wrote:
> The lan9303_enable_packet_processing, lan9303_disable_packet_processing
> functions operate on port, so the names should reflect that.
> And to align with lan9303_disable_processing(), rename:
>
> lan9303_enable_packet_processing -> lan9303_enable_processing_port
> lan9303_disable_packet_processing -> lan9303_disable_processing_port
>
> Signed-off-by: Egil Hjelmeland <[email protected]>
Reviewed-by: Florian Fainelli <[email protected]>
--
Florian
On 08/03/2017 02:45 AM, Egil Hjelmeland wrote:
> lan9303_enable_packet_processing, lan9303_disable_packet_processing()
> Pass port number (0,1,2) as parameter instead of port offset.
> Because other functions in the module pass port numbers.
> And to enable simplifications in following patch.
>
> Introduce lan9303_write_switch_port().
>
> Signed-off-by: Egil Hjelmeland <[email protected]>
> ---
> drivers/net/dsa/lan9303-core.c | 60 ++++++++++++++++++++++--------------------
> 1 file changed, 32 insertions(+), 28 deletions(-)
>
> diff --git a/drivers/net/dsa/lan9303-core.c b/drivers/net/dsa/lan9303-core.c
> index 8e430d1ee297..fa19e320c5a8 100644
> --- a/drivers/net/dsa/lan9303-core.c
> +++ b/drivers/net/dsa/lan9303-core.c
> @@ -159,9 +159,7 @@
> # define LAN9303_BM_EGRSS_PORT_TYPE_SPECIAL_TAG_PORT1 (BIT(9) | BIT(8))
> # define LAN9303_BM_EGRSS_PORT_TYPE_SPECIAL_TAG_PORT0 (BIT(1) | BIT(0))
>
> -#define LAN9303_PORT_0_OFFSET 0x400
> -#define LAN9303_PORT_1_OFFSET 0x800
> -#define LAN9303_PORT_2_OFFSET 0xc00
> +#define LAN9303_SWITCH_PORT_REG(port, reg0) (0x400 * (port) + (reg0))
>
> /* the built-in PHYs are of type LAN911X */
> #define MII_LAN911X_SPECIAL_MODES 0x12
> @@ -428,6 +426,13 @@ static int lan9303_read_switch_reg(struct lan9303 *chip, u16 regnum, u32 *val)
> return ret;
> }
>
> +static int lan9303_write_switch_port(
> + struct lan9303 *chip, int port, u16 regnum, u32 val)
> +{
> + return lan9303_write_switch_reg(
> + chip, LAN9303_SWITCH_PORT_REG(port, regnum), val);
> +}
This argument alignment is not looking too good, can you do this instead:
static int lan9303_write_switch_port(struct lan9303 *chip, int port
u16 regnum, u32 *val)
{
}
This applied to patch 5 as well (which should have included it applies
to patch 1 as well).
With that:
Reviewed-by: Florian Fainelli <[email protected]>
> +
> static int lan9303_detect_phy_setup(struct lan9303 *chip)
> {
> int reg;
> @@ -458,24 +463,23 @@ static int lan9303_detect_phy_setup(struct lan9303 *chip)
> return 0;
> }
>
> -#define LAN9303_MAC_RX_CFG_OFFS (LAN9303_MAC_RX_CFG_0 - LAN9303_PORT_0_OFFSET)
> -#define LAN9303_MAC_TX_CFG_OFFS (LAN9303_MAC_TX_CFG_0 - LAN9303_PORT_0_OFFSET)
> -
> static int lan9303_disable_packet_processing(struct lan9303 *chip,
> unsigned int port)
> {
> int ret;
>
> /* disable RX, but keep register reset default values else */
> - ret = lan9303_write_switch_reg(chip, LAN9303_MAC_RX_CFG_OFFS + port,
> - LAN9303_MAC_RX_CFG_X_REJECT_MAC_TYPES);
> + ret = lan9303_write_switch_port(
> + chip, port, LAN9303_MAC_RX_CFG_0,
> + LAN9303_MAC_RX_CFG_X_REJECT_MAC_TYPES);
> if (ret)
> return ret;
>
> /* disable TX, but keep register reset default values else */
> - return lan9303_write_switch_reg(chip, LAN9303_MAC_TX_CFG_OFFS + port,
> - LAN9303_MAC_TX_CFG_X_TX_IFG_CONFIG_DEFAULT |
> - LAN9303_MAC_TX_CFG_X_TX_PAD_ENABLE);
> + return lan9303_write_switch_port(
> + chip, port, LAN9303_MAC_TX_CFG_0,
> + LAN9303_MAC_TX_CFG_X_TX_IFG_CONFIG_DEFAULT |
> + LAN9303_MAC_TX_CFG_X_TX_PAD_ENABLE);
Same here, please don't re-align the arguments, they were fine already.
> }
>
> static int lan9303_enable_packet_processing(struct lan9303 *chip,
> @@ -484,17 +488,19 @@ static int lan9303_enable_packet_processing(struct lan9303 *chip,
> int ret;
>
> /* enable RX and keep register reset default values else */
> - ret = lan9303_write_switch_reg(chip, LAN9303_MAC_RX_CFG_OFFS + port,
> - LAN9303_MAC_RX_CFG_X_REJECT_MAC_TYPES |
> - LAN9303_MAC_RX_CFG_X_RX_ENABLE);
> + ret = lan9303_write_switch_port(
> + chip, port, LAN9303_MAC_RX_CFG_0,
> + LAN9303_MAC_RX_CFG_X_REJECT_MAC_TYPES |
> + LAN9303_MAC_RX_CFG_X_RX_ENABLE);
> if (ret)
> return ret;
>
> /* enable TX and keep register reset default values else */
> - return lan9303_write_switch_reg(chip, LAN9303_MAC_TX_CFG_OFFS + port,
> - LAN9303_MAC_TX_CFG_X_TX_IFG_CONFIG_DEFAULT |
> - LAN9303_MAC_TX_CFG_X_TX_PAD_ENABLE |
> - LAN9303_MAC_TX_CFG_X_TX_ENABLE);
> + return lan9303_write_switch_port(
> + chip, port, LAN9303_MAC_TX_CFG_0,
> + LAN9303_MAC_TX_CFG_X_TX_IFG_CONFIG_DEFAULT |
> + LAN9303_MAC_TX_CFG_X_TX_PAD_ENABLE |
> + LAN9303_MAC_TX_CFG_X_TX_ENABLE);
> }
>
> /* We want a special working switch:
> @@ -558,13 +564,13 @@ static int lan9303_disable_processing(struct lan9303 *chip)
> {
> int ret;
>
> - ret = lan9303_disable_packet_processing(chip, LAN9303_PORT_0_OFFSET);
> + ret = lan9303_disable_packet_processing(chip, 0);
> if (ret)
> return ret;
> - ret = lan9303_disable_packet_processing(chip, LAN9303_PORT_1_OFFSET);
> + ret = lan9303_disable_packet_processing(chip, 1);
> if (ret)
> return ret;
> - return lan9303_disable_packet_processing(chip, LAN9303_PORT_2_OFFSET);
> + return lan9303_disable_packet_processing(chip, 2);
> }
>
> static int lan9303_check_device(struct lan9303 *chip)
> @@ -634,7 +640,7 @@ static int lan9303_setup(struct dsa_switch *ds)
> if (ret)
> dev_err(chip->dev, "failed to separate ports %d\n", ret);
>
> - ret = lan9303_enable_packet_processing(chip, LAN9303_PORT_0_OFFSET);
> + ret = lan9303_enable_packet_processing(chip, 0);
> if (ret)
> dev_err(chip->dev, "failed to re-enable switching %d\n", ret);
>
> @@ -757,11 +763,9 @@ static int lan9303_port_enable(struct dsa_switch *ds, int port,
> /* enable internal packet processing */
> switch (port) {
> case 1:
> - return lan9303_enable_packet_processing(chip,
> - LAN9303_PORT_1_OFFSET);
> + return lan9303_enable_packet_processing(chip, port);
> case 2:
> - return lan9303_enable_packet_processing(chip,
> - LAN9303_PORT_2_OFFSET);
> + return lan9303_enable_packet_processing(chip, port);
> default:
> dev_dbg(chip->dev,
> "Error: request to power up invalid port %d\n", port);
> @@ -778,12 +782,12 @@ static void lan9303_port_disable(struct dsa_switch *ds, int port,
> /* disable internal packet processing */
> switch (port) {
> case 1:
> - lan9303_disable_packet_processing(chip, LAN9303_PORT_1_OFFSET);
> + lan9303_disable_packet_processing(chip, port);
> lan9303_phy_write(ds, chip->phy_addr_sel_strap + 1,
> MII_BMCR, BMCR_PDOWN);
> break;
> case 2:
> - lan9303_disable_packet_processing(chip, LAN9303_PORT_2_OFFSET);
> + lan9303_disable_packet_processing(chip, port);
> lan9303_phy_write(ds, chip->phy_addr_sel_strap + 2,
> MII_BMCR, BMCR_PDOWN);
> break;
>
--
Florian
Den 03. aug. 2017 20:06, skrev Florian Fainelli:
> On 08/03/2017 02:45 AM, Egil Hjelmeland wrote:
>> Simplify usage of lan9303_enable_packet_processing,
>> lan9303_disable_packet_processing()
>>
>> Signed-off-by: Egil Hjelmeland <[email protected]>
>
> Reviewed-by: Florian Fainelli <[email protected]>
>
> took a little while to figure out that we are utilizing fall through of
> the switch/case statement and that's why it's okay.
>
>>
>> static int lan9303_check_device(struct lan9303 *chip)
>> @@ -765,7 +766,6 @@ static int lan9303_port_enable(struct dsa_switch *ds, int port,
>> /* enable internal packet processing */
>> switch (port) {
>> case 1:
>> - return lan9303_enable_packet_processing(chip, port);
>> case 2:
>> return lan9303_enable_packet_processing(chip, port);
>> default:
I suppose if we later change to dsa_switch_alloc(...,3), then it could
be further simplified to
if (port != 0)
return lan9303_enable_packet_processing(chip, port);
Or perhaps no test is needed at all. The driver assumes port 0 is cpu
port, which is the sensible way to use the chip. (Because port 0 has
no phy, the others have phy). Declaring a different port as cpu port in
DTS will not work, but it will not crash the kernel.
Egil
Den 03. aug. 2017 20:04, skrev Florian Fainelli:
> On 08/03/2017 02:45 AM, Egil Hjelmeland wrote:
>> In lan9303_get_ethtool_stats: Get rid of 0x400 constant magic
>> by using new lan9303_read_switch_reg() inside loop.
>> Reduced scope of two variables.
>>
>> Signed-off-by: Egil Hjelmeland <[email protected]>
>> ---
>> drivers/net/dsa/lan9303-core.c | 26 ++++++++++++++++----------
>> 1 file changed, 16 insertions(+), 10 deletions(-)
>>
>> diff --git a/drivers/net/dsa/lan9303-core.c b/drivers/net/dsa/lan9303-core.c
>> index 6f409755ba1a..5aaa46146c27 100644
>> --- a/drivers/net/dsa/lan9303-core.c
>> +++ b/drivers/net/dsa/lan9303-core.c
>> @@ -435,6 +435,13 @@ static int lan9303_write_switch_port(
>> chip, LAN9303_SWITCH_PORT_REG(port, regnum), val);
>> }
>>
>> +static int lan9303_read_switch_port(
>> + struct lan9303 *chip, int port, u16 regnum, u32 *val)
>> +{
>
> This indentation is really funny, why not just break it up that way:
>
> static int lan9303_read_switch_port(struct lan9303 *chip, int port
> u16 regnum, u32 *val)
> {
> }
>
> This applies to patch 5 as well, other than that:
>
> Reviewed-by: Florian Fainelli <[email protected]>
>
Because it is the form that passes scripts/checkpatch.pl which I find
easiest to type and maintain.
- No need to fine tune spaces.
- No need to change indentation if later renaming function to name of
different length.
Do you have any references backing up your claim this is wrong?
Cheers
Egil