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Message-ID: <20241102151625.39535-2-linux@treblig.org>
Date: Sat, 2 Nov 2024 15:16:22 +0000
From: linux@...blig.org
To: ecree.xilinx@...il.com,
habetsm.xilinx@...il.com,
andrew+netdev@...n.ch,
davem@...emloft.net,
edumazet@...gle.com,
kuba@...nel.org,
pabeni@...hat.com
Cc: netdev@...r.kernel.org,
linux-net-drivers@....com,
linux-kernel@...r.kernel.org,
"Dr. David Alan Gilbert" <linux@...blig.org>
Subject: [PATCH net-next 1/4] sfc: Remove falcon deadcode
From: "Dr. David Alan Gilbert" <linux@...blig.org>
ef4_farch_dimension_resources(), ef4_nic_fix_nodesc_drop_stat(),
ef4_ticks_to_usecs() and ef4_tx_get_copy_buffer_limited() were
copied over from efx_ equivalents in 2016 but never used by
commit 5a6681e22c14 ("sfc: separate out SFC4000 ("Falcon") support into new
sfc-falcon driver")
EF4_MAX_FLUSH_TIME is also unused.
Remove them.
Signed-off-by: Dr. David Alan Gilbert <linux@...blig.org>
---
drivers/net/ethernet/sfc/falcon/efx.c | 8 --------
drivers/net/ethernet/sfc/falcon/efx.h | 1 -
drivers/net/ethernet/sfc/falcon/farch.c | 22 ----------------------
drivers/net/ethernet/sfc/falcon/nic.c | 11 -----------
drivers/net/ethernet/sfc/falcon/nic.h | 5 -----
drivers/net/ethernet/sfc/falcon/tx.c | 8 --------
drivers/net/ethernet/sfc/falcon/tx.h | 3 ---
7 files changed, 58 deletions(-)
diff --git a/drivers/net/ethernet/sfc/falcon/efx.c b/drivers/net/ethernet/sfc/falcon/efx.c
index 8925745f1c17..b07f7e4e2877 100644
--- a/drivers/net/ethernet/sfc/falcon/efx.c
+++ b/drivers/net/ethernet/sfc/falcon/efx.c
@@ -1886,14 +1886,6 @@ unsigned int ef4_usecs_to_ticks(struct ef4_nic *efx, unsigned int usecs)
return usecs * 1000 / efx->timer_quantum_ns;
}
-unsigned int ef4_ticks_to_usecs(struct ef4_nic *efx, unsigned int ticks)
-{
- /* We must round up when converting ticks to microseconds
- * because we round down when converting the other way.
- */
- return DIV_ROUND_UP(ticks * efx->timer_quantum_ns, 1000);
-}
-
/* Set interrupt moderation parameters */
int ef4_init_irq_moderation(struct ef4_nic *efx, unsigned int tx_usecs,
unsigned int rx_usecs, bool rx_adaptive,
diff --git a/drivers/net/ethernet/sfc/falcon/efx.h b/drivers/net/ethernet/sfc/falcon/efx.h
index d3b4646545fa..52508f2c8cb2 100644
--- a/drivers/net/ethernet/sfc/falcon/efx.h
+++ b/drivers/net/ethernet/sfc/falcon/efx.h
@@ -198,7 +198,6 @@ int ef4_try_recovery(struct ef4_nic *efx);
/* Global */
void ef4_schedule_reset(struct ef4_nic *efx, enum reset_type type);
unsigned int ef4_usecs_to_ticks(struct ef4_nic *efx, unsigned int usecs);
-unsigned int ef4_ticks_to_usecs(struct ef4_nic *efx, unsigned int ticks);
int ef4_init_irq_moderation(struct ef4_nic *efx, unsigned int tx_usecs,
unsigned int rx_usecs, bool rx_adaptive,
bool rx_may_override_tx);
diff --git a/drivers/net/ethernet/sfc/falcon/farch.c b/drivers/net/ethernet/sfc/falcon/farch.c
index c64623c2e80c..01017c41338e 100644
--- a/drivers/net/ethernet/sfc/falcon/farch.c
+++ b/drivers/net/ethernet/sfc/falcon/farch.c
@@ -1631,28 +1631,6 @@ void ef4_farch_rx_push_indir_table(struct ef4_nic *efx)
}
}
-/* Looks at available SRAM resources and works out how many queues we
- * can support, and where things like descriptor caches should live.
- *
- * SRAM is split up as follows:
- * 0 buftbl entries for channels
- * efx->vf_buftbl_base buftbl entries for SR-IOV
- * efx->rx_dc_base RX descriptor caches
- * efx->tx_dc_base TX descriptor caches
- */
-void ef4_farch_dimension_resources(struct ef4_nic *efx, unsigned sram_lim_qw)
-{
- unsigned vi_count;
-
- /* Account for the buffer table entries backing the datapath channels
- * and the descriptor caches for those channels.
- */
- vi_count = max(efx->n_channels, efx->n_tx_channels * EF4_TXQ_TYPES);
-
- efx->tx_dc_base = sram_lim_qw - vi_count * TX_DC_ENTRIES;
- efx->rx_dc_base = efx->tx_dc_base - vi_count * RX_DC_ENTRIES;
-}
-
u32 ef4_farch_fpga_ver(struct ef4_nic *efx)
{
ef4_oword_t altera_build;
diff --git a/drivers/net/ethernet/sfc/falcon/nic.c b/drivers/net/ethernet/sfc/falcon/nic.c
index 78c851b5a56f..1b91992e3698 100644
--- a/drivers/net/ethernet/sfc/falcon/nic.c
+++ b/drivers/net/ethernet/sfc/falcon/nic.c
@@ -511,14 +511,3 @@ void ef4_nic_update_stats(const struct ef4_hw_stat_desc *desc, size_t count,
}
}
}
-
-void ef4_nic_fix_nodesc_drop_stat(struct ef4_nic *efx, u64 *rx_nodesc_drops)
-{
- /* if down, or this is the first update after coming up */
- if (!(efx->net_dev->flags & IFF_UP) || !efx->rx_nodesc_drops_prev_state)
- efx->rx_nodesc_drops_while_down +=
- *rx_nodesc_drops - efx->rx_nodesc_drops_total;
- efx->rx_nodesc_drops_total = *rx_nodesc_drops;
- efx->rx_nodesc_drops_prev_state = !!(efx->net_dev->flags & IFF_UP);
- *rx_nodesc_drops -= efx->rx_nodesc_drops_while_down;
-}
diff --git a/drivers/net/ethernet/sfc/falcon/nic.h b/drivers/net/ethernet/sfc/falcon/nic.h
index ada6e036fd97..ac10c12967df 100644
--- a/drivers/net/ethernet/sfc/falcon/nic.h
+++ b/drivers/net/ethernet/sfc/falcon/nic.h
@@ -477,7 +477,6 @@ void ef4_farch_finish_flr(struct ef4_nic *efx);
void falcon_start_nic_stats(struct ef4_nic *efx);
void falcon_stop_nic_stats(struct ef4_nic *efx);
int falcon_reset_xaui(struct ef4_nic *efx);
-void ef4_farch_dimension_resources(struct ef4_nic *efx, unsigned sram_lim_qw);
void ef4_farch_init_common(struct ef4_nic *efx);
void ef4_farch_rx_push_indir_table(struct ef4_nic *efx);
@@ -502,10 +501,6 @@ size_t ef4_nic_describe_stats(const struct ef4_hw_stat_desc *desc, size_t count,
void ef4_nic_update_stats(const struct ef4_hw_stat_desc *desc, size_t count,
const unsigned long *mask, u64 *stats,
const void *dma_buf, bool accumulate);
-void ef4_nic_fix_nodesc_drop_stat(struct ef4_nic *efx, u64 *stat);
-
-#define EF4_MAX_FLUSH_TIME 5000
-
void ef4_farch_generate_event(struct ef4_nic *efx, unsigned int evq,
ef4_qword_t *event);
diff --git a/drivers/net/ethernet/sfc/falcon/tx.c b/drivers/net/ethernet/sfc/falcon/tx.c
index b9369483758c..e6e80b039ca2 100644
--- a/drivers/net/ethernet/sfc/falcon/tx.c
+++ b/drivers/net/ethernet/sfc/falcon/tx.c
@@ -40,14 +40,6 @@ static inline u8 *ef4_tx_get_copy_buffer(struct ef4_tx_queue *tx_queue,
return (u8 *)page_buf->addr + offset;
}
-u8 *ef4_tx_get_copy_buffer_limited(struct ef4_tx_queue *tx_queue,
- struct ef4_tx_buffer *buffer, size_t len)
-{
- if (len > EF4_TX_CB_SIZE)
- return NULL;
- return ef4_tx_get_copy_buffer(tx_queue, buffer);
-}
-
static void ef4_dequeue_buffer(struct ef4_tx_queue *tx_queue,
struct ef4_tx_buffer *buffer,
unsigned int *pkts_compl,
diff --git a/drivers/net/ethernet/sfc/falcon/tx.h b/drivers/net/ethernet/sfc/falcon/tx.h
index 2a88c59cbbbe..868ed8a861ab 100644
--- a/drivers/net/ethernet/sfc/falcon/tx.h
+++ b/drivers/net/ethernet/sfc/falcon/tx.h
@@ -15,9 +15,6 @@
unsigned int ef4_tx_limit_len(struct ef4_tx_queue *tx_queue,
dma_addr_t dma_addr, unsigned int len);
-u8 *ef4_tx_get_copy_buffer_limited(struct ef4_tx_queue *tx_queue,
- struct ef4_tx_buffer *buffer, size_t len);
-
int ef4_enqueue_skb_tso(struct ef4_tx_queue *tx_queue, struct sk_buff *skb,
bool *data_mapped);
--
2.47.0
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