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net: mscc: ocelot: extend watermark encoding function 

The ocelot_wm_encode function deals with setting thresholds for pause
frame start and stop. In Ocelot and Felix the register layout is the
same, but for Seville, it isn't. The easiest way to accommodate Seville
hardware configuration is to introduce a function pointer for setting
this up.

Signed-off-by: Maxim Kochetkov <fido_max@inbox.ru>
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Maxim Kochetkov 2020-07-13 19:57:08 +03:00 committed by David S. Miller
parent 541132f096
commit aa92d836d5
4 changed files with 29 additions and 14 deletions
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13
drivers/net/dsa/ocelot/felix_vsc9959.c
View File

@ -1149,8 +1149,21 @@ static int vsc9959_prevalidate_phy_mode(struct ocelot *ocelot, int port,
}
}
/* Watermark encode
* Bit 8: Unit; 0:1, 1:16
* Bit 7-0: Value to be multiplied with unit
*/
static u16 vsc9959_wm_enc(u16 value)
{
if (value >= BIT(8))
return BIT(8) | (value / 16);
return value;
}
static const struct ocelot_ops vsc9959_ops = {
.reset = vsc9959_reset,
.wm_enc = vsc9959_wm_enc,
};
static int vsc9959_mdio_bus_alloc(struct ocelot *ocelot)

16
drivers/net/ethernet/mscc/ocelot.c
View File

@ -309,18 +309,6 @@ static void ocelot_vlan_init(struct ocelot *ocelot)
}
}
/* Watermark encode
* Bit 8: Unit; 0:1, 1:16
* Bit 7-0: Value to be multiplied with unit
*/
static u16 ocelot_wm_enc(u16 value)
{
if (value >= BIT(8))
return BIT(8) | (value / 16);
return value;
}
void ocelot_adjust_link(struct ocelot *ocelot, int port,
struct phy_device *phydev)
{
@ -1284,9 +1272,9 @@ void ocelot_port_set_maxlen(struct ocelot *ocelot, int port, size_t sdu)
/* Tail dropping watermark */
atop_wm = (ocelot->shared_queue_sz - 9 * maxlen) /
OCELOT_BUFFER_CELL_SZ;
ocelot_write_rix(ocelot, ocelot_wm_enc(9 * maxlen),
ocelot_write_rix(ocelot, ocelot->ops->wm_enc(9 * maxlen),
SYS_ATOP, port);
ocelot_write(ocelot, ocelot_wm_enc(atop_wm), SYS_ATOP_TOT_CFG);
ocelot_write(ocelot, ocelot->ops->wm_enc(atop_wm), SYS_ATOP_TOT_CFG);
}
EXPORT_SYMBOL(ocelot_port_set_maxlen);

13
drivers/net/ethernet/mscc/ocelot_vsc7514.c
View File

@ -739,8 +739,21 @@ static int ocelot_reset(struct ocelot *ocelot)
return 0;
}
/* Watermark encode
* Bit 8: Unit; 0:1, 1:16
* Bit 7-0: Value to be multiplied with unit
*/
static u16 ocelot_wm_enc(u16 value)
{
if (value >= BIT(8))
return BIT(8) | (value / 16);
return value;
}
static const struct ocelot_ops ocelot_ops = {
.reset = ocelot_reset,
.wm_enc = ocelot_wm_enc,
};
static const struct vcap_field vsc7514_vcap_is2_keys[] = {

1
include/soc/mscc/ocelot.h
View File

@ -541,6 +541,7 @@ struct ocelot;
struct ocelot_ops {
int (*reset)(struct ocelot *ocelot);
u16 (*wm_enc)(u16 value);
};
struct ocelot_vcap_block {