diff options
| author | Ben Hutchings <bhutchings@solarflare.com> | 2012-02-07 23:39:18 +0000 |
|---|---|---|
| committer | Ben Hutchings <bhutchings@solarflare.com> | 2012-02-16 00:14:59 +0000 |
| commit | 4ef594eb892b3263fe45d72d5b8161ed4ffa6c0d (patch) | |
| tree | a32c72e21589039ba99ee5ffaf3999fe78848d82 /drivers/net/ethernet/sfc | |
| parent | 055e0ad01418bc4d68106df8c8a2d0338fbf67ba (diff) | |
| download | linux-4ef594eb892b3263fe45d72d5b8161ed4ffa6c0d.tar.bz2 | |
sfc: Generalise driver event generation
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Diffstat (limited to 'drivers/net/ethernet/sfc')
| -rw-r--r-- | drivers/net/ethernet/sfc/nic.c | 51 |
1 files changed, 27 insertions, 24 deletions
diff --git a/drivers/net/ethernet/sfc/nic.c b/drivers/net/ethernet/sfc/nic.c index dd50c4f73a9d..0a46b1c872a7 100644 --- a/drivers/net/ethernet/sfc/nic.c +++ b/drivers/net/ethernet/sfc/nic.c @@ -57,13 +57,17 @@ /* Depth of RX flush request fifo */ #define EFX_RX_FLUSH_COUNT 4 -/* Generated event code for efx_generate_test_event() */ -#define EFX_CHANNEL_MAGIC_TEST(_channel) \ - (0x00010100 + (_channel)->channel) +/* Driver generated events */ +#define _EFX_CHANNEL_MAGIC_TEST 0x000101 +#define _EFX_CHANNEL_MAGIC_FILL 0x000102 -/* Generated event code for efx_generate_fill_event() */ -#define EFX_CHANNEL_MAGIC_FILL(_channel) \ - (0x00010200 + (_channel)->channel) +#define _EFX_CHANNEL_MAGIC(_code, _data) ((_code) << 8 | (_data)) +#define _EFX_CHANNEL_MAGIC_CODE(_magic) ((_magic) >> 8) + +#define EFX_CHANNEL_MAGIC_TEST(_channel) \ + _EFX_CHANNEL_MAGIC(_EFX_CHANNEL_MAGIC_TEST, (_channel)->channel) +#define EFX_CHANNEL_MAGIC_FILL(_channel) \ + _EFX_CHANNEL_MAGIC(_EFX_CHANNEL_MAGIC_FILL, (_channel)->channel) /************************************************************************** * @@ -693,6 +697,16 @@ static void efx_generate_event(struct efx_channel *channel, efx_qword_t *event) efx_writeo(channel->efx, &drv_ev_reg, FR_AZ_DRV_EV); } +static void efx_magic_event(struct efx_channel *channel, u32 magic) +{ + efx_qword_t event; + + EFX_POPULATE_QWORD_2(event, FSF_AZ_EV_CODE, + FSE_AZ_EV_CODE_DRV_GEN_EV, + FSF_AZ_DRV_GEN_EV_MAGIC, magic); + efx_generate_event(channel, &event); +} + /* Handle a transmit completion event * * The NIC batches TX completion events; the message we receive is of @@ -898,12 +912,13 @@ static void efx_handle_generated_event(struct efx_channel *channel, efx_qword_t *event) { struct efx_nic *efx = channel->efx; - unsigned code; + unsigned magic; - code = EFX_QWORD_FIELD(*event, FSF_AZ_DRV_GEN_EV_MAGIC); - if (code == EFX_CHANNEL_MAGIC_TEST(channel)) + magic = EFX_QWORD_FIELD(*event, FSF_AZ_DRV_GEN_EV_MAGIC); + + if (magic == EFX_CHANNEL_MAGIC_TEST(channel)) ; /* ignore */ - else if (code == EFX_CHANNEL_MAGIC_FILL(channel)) + else if (magic == EFX_CHANNEL_MAGIC_FILL(channel)) /* The queue must be empty, so we won't receive any rx * events, so efx_process_channel() won't refill the * queue. Refill it here */ @@ -1132,24 +1147,12 @@ void efx_nic_remove_eventq(struct efx_channel *channel) void efx_nic_generate_test_event(struct efx_channel *channel) { - unsigned int magic = EFX_CHANNEL_MAGIC_TEST(channel); - efx_qword_t test_event; - - EFX_POPULATE_QWORD_2(test_event, FSF_AZ_EV_CODE, - FSE_AZ_EV_CODE_DRV_GEN_EV, - FSF_AZ_DRV_GEN_EV_MAGIC, magic); - efx_generate_event(channel, &test_event); + efx_magic_event(channel, EFX_CHANNEL_MAGIC_TEST(channel)); } void efx_nic_generate_fill_event(struct efx_channel *channel) { - unsigned int magic = EFX_CHANNEL_MAGIC_FILL(channel); - efx_qword_t test_event; - - EFX_POPULATE_QWORD_2(test_event, FSF_AZ_EV_CODE, - FSE_AZ_EV_CODE_DRV_GEN_EV, - FSF_AZ_DRV_GEN_EV_MAGIC, magic); - efx_generate_event(channel, &test_event); + efx_magic_event(channel, EFX_CHANNEL_MAGIC_FILL(channel)); } /************************************************************************** |