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Message-ID: <555B74C6.7070102@solarflare.com>
Date: Tue, 19 May 2015 18:37:10 +0100
From: Edward Cree <ecree@...arflare.com>
To: David Miller <davem@...emloft.net>
CC: <netdev@...r.kernel.org>, <linux-net-drivers@...arflare.com>
Subject: [PATCH net-next 4/4] sfc: Initialise MCDI buffers to 0 on declaration.
From: Jon Cooper <jcooper@...arflare.com>
Signed-off-by: Edward Cree <ecree@...arflare.com>
---
drivers/net/ethernet/sfc/ef10.c | 24 +++++++++++++-----------
drivers/net/ethernet/sfc/mcdi.c | 8 ++++----
drivers/net/ethernet/sfc/mcdi.h | 8 +++++---
drivers/net/ethernet/sfc/ptp.c | 6 +++---
4 files changed, 25 insertions(+), 21 deletions(-)
diff --git a/drivers/net/ethernet/sfc/ef10.c b/drivers/net/ethernet/sfc/ef10.c
index 2e8e5de..ed0ec88 100644
--- a/drivers/net/ethernet/sfc/ef10.c
+++ b/drivers/net/ethernet/sfc/ef10.c
@@ -350,7 +350,7 @@ static int efx_ef10_probe_vf(struct efx_nic *efx __attribute__ ((unused)))
static int efx_ef10_free_vis(struct efx_nic *efx)
{
- MCDI_DECLARE_BUF_OUT_OR_ERR(outbuf, 0);
+ MCDI_DECLARE_BUF_ERR(outbuf);
size_t outlen;
int rc = efx_mcdi_rpc_quiet(efx, MC_CMD_FREE_VIS, NULL, 0,
outbuf, sizeof(outbuf), &outlen);
@@ -421,7 +421,7 @@ static int efx_ef10_alloc_piobufs(struct efx_nic *efx, unsigned int n)
static int efx_ef10_link_piobufs(struct efx_nic *efx)
{
struct efx_ef10_nic_data *nic_data = efx->nic_data;
- MCDI_DECLARE_BUF(inbuf,
+ _MCDI_DECLARE_BUF(inbuf,
max(MC_CMD_LINK_PIOBUF_IN_LEN,
MC_CMD_UNLINK_PIOBUF_IN_LEN));
struct efx_channel *channel;
@@ -432,6 +432,8 @@ static int efx_ef10_link_piobufs(struct efx_nic *efx)
BUILD_BUG_ON(MC_CMD_LINK_PIOBUF_OUT_LEN != 0);
BUILD_BUG_ON(MC_CMD_UNLINK_PIOBUF_OUT_LEN != 0);
+ memset(inbuf, 0, sizeof(inbuf));
+
/* Link a buffer to each VI in the write-combining mapping */
for (index = 0; index < nic_data->n_piobufs; ++index) {
MCDI_SET_DWORD(inbuf, LINK_PIOBUF_IN_PIOBUF_HANDLE,
@@ -1315,17 +1317,17 @@ static void efx_ef10_tx_init(struct efx_tx_queue *tx_queue)
{
MCDI_DECLARE_BUF(inbuf, MC_CMD_INIT_TXQ_IN_LEN(EFX_MAX_DMAQ_SIZE * 8 /
EFX_BUF_SIZE));
- MCDI_DECLARE_BUF(outbuf, MC_CMD_INIT_TXQ_OUT_LEN);
bool csum_offload = tx_queue->queue & EFX_TXQ_TYPE_OFFLOAD;
size_t entries = tx_queue->txd.buf.len / EFX_BUF_SIZE;
struct efx_channel *channel = tx_queue->channel;
struct efx_nic *efx = tx_queue->efx;
struct efx_ef10_nic_data *nic_data = efx->nic_data;
- size_t inlen, outlen;
+ size_t inlen;
dma_addr_t dma_addr;
efx_qword_t *txd;
int rc;
int i;
+ BUILD_BUG_ON(MC_CMD_INIT_TXQ_OUT_LEN != 0);
MCDI_SET_DWORD(inbuf, INIT_TXQ_IN_SIZE, tx_queue->ptr_mask + 1);
MCDI_SET_DWORD(inbuf, INIT_TXQ_IN_TARGET_EVQ, channel->channel);
@@ -1350,7 +1352,7 @@ static void efx_ef10_tx_init(struct efx_tx_queue *tx_queue)
inlen = MC_CMD_INIT_TXQ_IN_LEN(entries);
rc = efx_mcdi_rpc(efx, MC_CMD_INIT_TXQ, inbuf, inlen,
- outbuf, sizeof(outbuf), &outlen);
+ NULL, 0, NULL);
if (rc)
goto fail;
@@ -1383,7 +1385,7 @@ fail:
static void efx_ef10_tx_fini(struct efx_tx_queue *tx_queue)
{
MCDI_DECLARE_BUF(inbuf, MC_CMD_FINI_TXQ_IN_LEN);
- MCDI_DECLARE_BUF(outbuf, MC_CMD_FINI_TXQ_OUT_LEN);
+ MCDI_DECLARE_BUF_ERR(outbuf);
struct efx_nic *efx = tx_queue->efx;
size_t outlen;
int rc;
@@ -1690,15 +1692,15 @@ static void efx_ef10_rx_init(struct efx_rx_queue *rx_queue)
MCDI_DECLARE_BUF(inbuf,
MC_CMD_INIT_RXQ_IN_LEN(EFX_MAX_DMAQ_SIZE * 8 /
EFX_BUF_SIZE));
- MCDI_DECLARE_BUF(outbuf, MC_CMD_INIT_RXQ_OUT_LEN);
struct efx_channel *channel = efx_rx_queue_channel(rx_queue);
size_t entries = rx_queue->rxd.buf.len / EFX_BUF_SIZE;
struct efx_nic *efx = rx_queue->efx;
struct efx_ef10_nic_data *nic_data = efx->nic_data;
- size_t inlen, outlen;
+ size_t inlen;
dma_addr_t dma_addr;
int rc;
int i;
+ BUILD_BUG_ON(MC_CMD_INIT_RXQ_OUT_LEN != 0);
rx_queue->scatter_n = 0;
rx_queue->scatter_len = 0;
@@ -1727,7 +1729,7 @@ static void efx_ef10_rx_init(struct efx_rx_queue *rx_queue)
inlen = MC_CMD_INIT_RXQ_IN_LEN(entries);
rc = efx_mcdi_rpc(efx, MC_CMD_INIT_RXQ, inbuf, inlen,
- outbuf, sizeof(outbuf), &outlen);
+ NULL, 0, NULL);
if (rc)
netdev_WARN(efx->net_dev, "failed to initialise RXQ %d\n",
efx_rx_queue_index(rx_queue));
@@ -1736,7 +1738,7 @@ static void efx_ef10_rx_init(struct efx_rx_queue *rx_queue)
static void efx_ef10_rx_fini(struct efx_rx_queue *rx_queue)
{
MCDI_DECLARE_BUF(inbuf, MC_CMD_FINI_RXQ_IN_LEN);
- MCDI_DECLARE_BUF(outbuf, MC_CMD_FINI_RXQ_OUT_LEN);
+ MCDI_DECLARE_BUF_ERR(outbuf);
struct efx_nic *efx = rx_queue->efx;
size_t outlen;
int rc;
@@ -1898,7 +1900,7 @@ static int efx_ef10_ev_init(struct efx_channel *channel)
static void efx_ef10_ev_fini(struct efx_channel *channel)
{
MCDI_DECLARE_BUF(inbuf, MC_CMD_FINI_EVQ_IN_LEN);
- MCDI_DECLARE_BUF(outbuf, MC_CMD_FINI_EVQ_OUT_LEN);
+ MCDI_DECLARE_BUF_ERR(outbuf);
struct efx_nic *efx = channel->efx;
size_t outlen;
int rc;
diff --git a/drivers/net/ethernet/sfc/mcdi.c b/drivers/net/ethernet/sfc/mcdi.c
index 50b8ff8..448089a 100644
--- a/drivers/net/ethernet/sfc/mcdi.c
+++ b/drivers/net/ethernet/sfc/mcdi.c
@@ -497,7 +497,7 @@ static bool efx_mcdi_complete_async(struct efx_mcdi_iface *mcdi, bool timeout)
struct efx_mcdi_async_param *async;
size_t hdr_len, data_len, err_len;
efx_dword_t *outbuf;
- MCDI_DECLARE_BUF_OUT_OR_ERR(errbuf, 0);
+ MCDI_DECLARE_BUF_ERR(errbuf);
int rc;
if (cmpxchg(&mcdi->state,
@@ -625,7 +625,7 @@ static int _efx_mcdi_rpc_finish(struct efx_nic *efx, unsigned cmd, size_t inlen,
size_t *outlen_actual, bool quiet)
{
struct efx_mcdi_iface *mcdi = efx_mcdi(efx);
- MCDI_DECLARE_BUF_OUT_OR_ERR(errbuf, 0);
+ MCDI_DECLARE_BUF_ERR(errbuf);
int rc;
if (mcdi->mode == MCDI_MODE_POLL)
@@ -1480,7 +1480,7 @@ fail1:
static int efx_mcdi_read_assertion(struct efx_nic *efx)
{
MCDI_DECLARE_BUF(inbuf, MC_CMD_GET_ASSERTS_IN_LEN);
- MCDI_DECLARE_BUF_OUT_OR_ERR(outbuf, MC_CMD_GET_ASSERTS_OUT_LEN);
+ MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_ASSERTS_OUT_LEN);
unsigned int flags, index;
const char *reason;
size_t outlen;
@@ -1790,7 +1790,7 @@ int efx_mcdi_set_workaround(struct efx_nic *efx, u32 type, bool enabled)
int efx_mcdi_get_workarounds(struct efx_nic *efx, unsigned int *impl_out,
unsigned int *enabled_out)
{
- MCDI_DECLARE_BUF_OUT_OR_ERR(outbuf, MC_CMD_GET_WORKAROUNDS_OUT_LEN);
+ MCDI_DECLARE_BUF(outbuf, MC_CMD_GET_WORKAROUNDS_OUT_LEN);
size_t outlen;
int rc;
diff --git a/drivers/net/ethernet/sfc/mcdi.h b/drivers/net/ethernet/sfc/mcdi.h
index 47035a0..1838afe 100644
--- a/drivers/net/ethernet/sfc/mcdi.h
+++ b/drivers/net/ethernet/sfc/mcdi.h
@@ -182,10 +182,12 @@ void efx_mcdi_sensor_event(struct efx_nic *efx, efx_qword_t *ev);
* 32-bit-aligned. Also, on Siena we must copy to the MC shared
* memory strictly 32 bits at a time, so add any necessary padding.
*/
-#define MCDI_DECLARE_BUF(_name, _len) \
+#define _MCDI_DECLARE_BUF(_name, _len) \
efx_dword_t _name[DIV_ROUND_UP(_len, 4)]
-#define MCDI_DECLARE_BUF_OUT_OR_ERR(_name, _len) \
- MCDI_DECLARE_BUF(_name, max_t(size_t, _len, 8))
+#define MCDI_DECLARE_BUF(_name, _len) \
+ _MCDI_DECLARE_BUF(_name, _len) = {{{0}}}
+#define MCDI_DECLARE_BUF_ERR(_name) \
+ MCDI_DECLARE_BUF(_name, 8)
#define _MCDI_PTR(_buf, _offset) \
((u8 *)(_buf) + (_offset))
#define MCDI_PTR(_buf, _field) \
diff --git a/drivers/net/ethernet/sfc/ptp.c b/drivers/net/ethernet/sfc/ptp.c
index 5578c54..ad62615 100644
--- a/drivers/net/ethernet/sfc/ptp.c
+++ b/drivers/net/ethernet/sfc/ptp.c
@@ -306,7 +306,7 @@ struct efx_ptp_data {
struct work_struct pps_work;
struct workqueue_struct *pps_workwq;
bool nic_ts_enabled;
- MCDI_DECLARE_BUF(txbuf, MC_CMD_PTP_IN_TRANSMIT_LENMAX);
+ _MCDI_DECLARE_BUF(txbuf, MC_CMD_PTP_IN_TRANSMIT_LENMAX);
unsigned int good_syncs;
unsigned int fast_syncs;
@@ -573,7 +573,7 @@ static int efx_ptp_get_timestamp_corrections(struct efx_nic *efx)
static int efx_ptp_enable(struct efx_nic *efx)
{
MCDI_DECLARE_BUF(inbuf, MC_CMD_PTP_IN_ENABLE_LEN);
- MCDI_DECLARE_BUF_OUT_OR_ERR(outbuf, 0);
+ MCDI_DECLARE_BUF_ERR(outbuf);
int rc;
MCDI_SET_DWORD(inbuf, PTP_IN_OP, MC_CMD_PTP_OP_ENABLE);
@@ -601,7 +601,7 @@ static int efx_ptp_enable(struct efx_nic *efx)
static int efx_ptp_disable(struct efx_nic *efx)
{
MCDI_DECLARE_BUF(inbuf, MC_CMD_PTP_IN_DISABLE_LEN);
- MCDI_DECLARE_BUF_OUT_OR_ERR(outbuf, 0);
+ MCDI_DECLARE_BUF_ERR(outbuf);
int rc;
MCDI_SET_DWORD(inbuf, PTP_IN_OP, MC_CMD_PTP_OP_DISABLE);
--
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