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authorBen Hutchings <bhutchings@solarflare.com>2013-05-27 16:52:54 +0100
committerBen Hutchings <bhutchings@solarflare.com>2013-08-21 19:49:23 +0100
commite42c3d85af629697699c89aecba481527a1da898 (patch)
tree7431ccaddc601beb668969d26cb1d07f6d72a264 /drivers/net/ethernet/sfc/net_driver.h
parent501a248cf6995286a4da0c2aa93c0fa9c5941453 (diff)
downloadblackbird-op-linux-e42c3d85af629697699c89aecba481527a1da898.tar.gz
blackbird-op-linux-e42c3d85af629697699c89aecba481527a1da898.zip
sfc: Refactor queue teardown sequence to allow for EF10 flush behaviour
Currently efx_stop_datapath() will try to flush our DMA queues (if DMA is enabled), then finalise software and hardware state for each queue. However, for EF10 we must ask the MC to finalise each queue, which implicitly starts flushing it, and then wait for the flush events. We therefore need to delegate more of this to the NIC type. Combine all the hardware operations into a new NIC-type operation efx_nic_type::fini_dmaq, and call this before tearing down the software state and buffers for all the DMA queues. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Diffstat (limited to 'drivers/net/ethernet/sfc/net_driver.h')
-rw-r--r--drivers/net/ethernet/sfc/net_driver.h6
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/net/ethernet/sfc/net_driver.h b/drivers/net/ethernet/sfc/net_driver.h
index c9f798913f39..b382895901b1 100644
--- a/drivers/net/ethernet/sfc/net_driver.h
+++ b/drivers/net/ethernet/sfc/net_driver.h
@@ -953,8 +953,11 @@ static inline unsigned int efx_port_num(struct efx_nic *efx)
* @probe_port: Probe the MAC and PHY
* @remove_port: Free resources allocated by probe_port()
* @handle_global_event: Handle a "global" event (may be %NULL)
+ * @fini_dmaq: Flush and finalise DMA queues (RX and TX queues)
* @prepare_flush: Prepare the hardware for flushing the DMA queues
- * @finish_flush: Clean up after flushing the DMA queues
+ * (for Falcon architecture)
+ * @finish_flush: Clean up after flushing the DMA queues (for Falcon
+ * architecture)
* @update_stats: Update statistics not provided by event handling
* @start_stats: Start the regular fetching of statistics
* @stop_stats: Stop the regular fetching of statistics
@@ -1014,6 +1017,7 @@ struct efx_nic_type {
int (*probe_port)(struct efx_nic *efx);
void (*remove_port)(struct efx_nic *efx);
bool (*handle_global_event)(struct efx_channel *channel, efx_qword_t *);
+ int (*fini_dmaq)(struct efx_nic *efx);
void (*prepare_flush)(struct efx_nic *efx);
void (*finish_flush)(struct efx_nic *efx);
void (*update_stats)(struct efx_nic *efx);
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