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Message-ID: <1377175807.1703.17.camel@bwh-desktop.uk.level5networks.com>
Date: Thu, 22 Aug 2013 13:50:07 +0100
From: Ben Hutchings <bhutchings@...arflare.com>
To: David Miller <davem@...emloft.net>
CC: <netdev@...r.kernel.org>, <linux-net-drivers@...arflare.com>
Subject: [PATCH net-next 12/32] sfc: Add and use MCDI_SET_QWORD() and
MCDI_SET_ARRAY_QWORD()
No need to keep open-coding the assignment of high and low dwords.
Signed-off-by: Ben Hutchings <bhutchings@...arflare.com>
---
drivers/net/ethernet/sfc/mcdi.h | 23 ++++++++++++++++++++---
drivers/net/ethernet/sfc/mcdi_mon.c | 6 ++----
drivers/net/ethernet/sfc/ptp.c | 13 ++++---------
drivers/net/ethernet/sfc/siena_sriov.c | 21 ++++++++-------------
4 files changed, 34 insertions(+), 29 deletions(-)
diff --git a/drivers/net/ethernet/sfc/mcdi.h b/drivers/net/ethernet/sfc/mcdi.h
index 28657a1..899f094 100644
--- a/drivers/net/ethernet/sfc/mcdi.h
+++ b/drivers/net/ethernet/sfc/mcdi.h
@@ -88,9 +88,9 @@ extern void efx_mcdi_process_event(struct efx_channel *channel,
extern void efx_mcdi_sensor_event(struct efx_nic *efx, efx_qword_t *ev);
/* We expect that 16- and 32-bit fields in MCDI requests and responses
- * are appropriately aligned. Also, on Siena we must copy to the MC
- * shared memory strictly 32 bits at a time, so add any necessary
- * padding.
+ * are appropriately aligned, but 64-bit fields are only
+ * 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) \
efx_dword_t _name[DIV_ROUND_UP(_len, 4)]
@@ -107,6 +107,13 @@ extern void efx_mcdi_sensor_event(struct efx_nic *efx, efx_qword_t *ev);
EFX_POPULATE_DWORD_1(*_MCDI_DWORD(_buf, _field), EFX_DWORD_0, _value)
#define MCDI_DWORD(_buf, _field) \
EFX_DWORD_FIELD(*_MCDI_DWORD(_buf, _field), EFX_DWORD_0)
+#define MCDI_SET_QWORD(_buf, _field, _value) \
+ do { \
+ EFX_POPULATE_DWORD_1(_MCDI_DWORD(_buf, _field)[0], \
+ EFX_DWORD_0, (u32)(_value)); \
+ EFX_POPULATE_DWORD_1(_MCDI_DWORD(_buf, _field)[1], \
+ EFX_DWORD_0, (u64)(_value) >> 32); \
+ } while (0)
#define MCDI_QWORD(_buf, _field) \
(EFX_DWORD_FIELD(_MCDI_DWORD(_buf, _field)[0], EFX_DWORD_0) | \
(u64)EFX_DWORD_FIELD(_MCDI_DWORD(_buf, _field)[1], EFX_DWORD_0) << 32)
@@ -140,6 +147,16 @@ extern void efx_mcdi_sensor_event(struct efx_nic *efx, efx_qword_t *ev);
EFX_DWORD_0, _value)
#define MCDI_ARRAY_DWORD(_buf, _field, _index) \
EFX_DWORD_FIELD(*_MCDI_ARRAY_DWORD(_buf, _field, _index), EFX_DWORD_0)
+#define _MCDI_ARRAY_QWORD(_buf, _field, _index) \
+ (BUILD_BUG_ON_ZERO(MC_CMD_ ## _field ## _LEN != 8) + \
+ (efx_dword_t *)_MCDI_ARRAY_PTR(_buf, _field, _index, 4))
+#define MCDI_SET_ARRAY_QWORD(_buf, _field, _index, _value) \
+ do { \
+ EFX_SET_DWORD_FIELD(_MCDI_ARRAY_QWORD(_buf, _field, _index)[0],\
+ EFX_DWORD_0, (u32)(_value)); \
+ EFX_SET_DWORD_FIELD(_MCDI_ARRAY_QWORD(_buf, _field, _index)[1],\
+ EFX_DWORD_0, (u64)(_value) >> 32); \
+ } while (0)
#define MCDI_ARRAY_FIELD(_buf, _field1, _type, _index, _field2) \
MCDI_FIELD(MCDI_ARRAY_STRUCT_PTR(_buf, _field1, _index), \
_type ## _TYPEDEF, _field2)
diff --git a/drivers/net/ethernet/sfc/mcdi_mon.c b/drivers/net/ethernet/sfc/mcdi_mon.c
index 4e8a138..3179b2b 100644
--- a/drivers/net/ethernet/sfc/mcdi_mon.c
+++ b/drivers/net/ethernet/sfc/mcdi_mon.c
@@ -95,10 +95,8 @@ static int efx_mcdi_mon_update(struct efx_nic *efx)
MCDI_DECLARE_BUF(inbuf, MC_CMD_READ_SENSORS_IN_LEN);
int rc;
- MCDI_SET_DWORD(inbuf, READ_SENSORS_IN_DMA_ADDR_LO,
- hwmon->dma_buf.dma_addr & 0xffffffff);
- MCDI_SET_DWORD(inbuf, READ_SENSORS_IN_DMA_ADDR_HI,
- (u64)hwmon->dma_buf.dma_addr >> 32);
+ MCDI_SET_QWORD(inbuf, READ_SENSORS_IN_DMA_ADDR,
+ hwmon->dma_buf.dma_addr);
rc = efx_mcdi_rpc(efx, MC_CMD_READ_SENSORS,
inbuf, sizeof(inbuf), NULL, 0, NULL);
diff --git a/drivers/net/ethernet/sfc/ptp.c b/drivers/net/ethernet/sfc/ptp.c
index 5612021..d96bfc4 100644
--- a/drivers/net/ethernet/sfc/ptp.c
+++ b/drivers/net/ethernet/sfc/ptp.c
@@ -533,10 +533,8 @@ static int efx_ptp_synchronize(struct efx_nic *efx, unsigned int num_readings)
MCDI_SET_DWORD(synch_buf, PTP_IN_OP, MC_CMD_PTP_OP_SYNCHRONIZE);
MCDI_SET_DWORD(synch_buf, PTP_IN_SYNCHRONIZE_NUMTIMESETS,
num_readings);
- MCDI_SET_DWORD(synch_buf, PTP_IN_SYNCHRONIZE_START_ADDR_LO,
- (u32)ptp->start.dma_addr);
- MCDI_SET_DWORD(synch_buf, PTP_IN_SYNCHRONIZE_START_ADDR_HI,
- (u32)((u64)ptp->start.dma_addr >> 32));
+ MCDI_SET_QWORD(synch_buf, PTP_IN_SYNCHRONIZE_START_ADDR,
+ ptp->start.dma_addr);
/* Clear flag that signals MC ready */
ACCESS_ONCE(*start) = 0;
@@ -1378,9 +1376,7 @@ static int efx_phc_adjfreq(struct ptp_clock_info *ptp, s32 delta)
(PPB_EXTRA_BITS + MAX_PPB_BITS));
MCDI_SET_DWORD(inadj, PTP_IN_OP, MC_CMD_PTP_OP_ADJUST);
- MCDI_SET_DWORD(inadj, PTP_IN_ADJUST_FREQ_LO, (u32)adjustment_ns);
- MCDI_SET_DWORD(inadj, PTP_IN_ADJUST_FREQ_HI,
- (u32)(adjustment_ns >> 32));
+ MCDI_SET_QWORD(inadj, PTP_IN_ADJUST_FREQ, adjustment_ns);
MCDI_SET_DWORD(inadj, PTP_IN_ADJUST_SECONDS, 0);
MCDI_SET_DWORD(inadj, PTP_IN_ADJUST_NANOSECONDS, 0);
rc = efx_mcdi_rpc(efx, MC_CMD_PTP, inadj, sizeof(inadj),
@@ -1402,8 +1398,7 @@ static int efx_phc_adjtime(struct ptp_clock_info *ptp, s64 delta)
MCDI_DECLARE_BUF(inbuf, MC_CMD_PTP_IN_ADJUST_LEN);
MCDI_SET_DWORD(inbuf, PTP_IN_OP, MC_CMD_PTP_OP_ADJUST);
- MCDI_SET_DWORD(inbuf, PTP_IN_ADJUST_FREQ_LO, 0);
- MCDI_SET_DWORD(inbuf, PTP_IN_ADJUST_FREQ_HI, 0);
+ MCDI_SET_QWORD(inbuf, PTP_IN_ADJUST_FREQ, 0);
MCDI_SET_DWORD(inbuf, PTP_IN_ADJUST_SECONDS, (u32)delta_ts.tv_sec);
MCDI_SET_DWORD(inbuf, PTP_IN_ADJUST_NANOSECONDS, (u32)delta_ts.tv_nsec);
return efx_mcdi_rpc(efx, MC_CMD_PTP, inbuf, sizeof(inbuf),
diff --git a/drivers/net/ethernet/sfc/siena_sriov.c b/drivers/net/ethernet/sfc/siena_sriov.c
index 198044f..2587d30 100644
--- a/drivers/net/ethernet/sfc/siena_sriov.c
+++ b/drivers/net/ethernet/sfc/siena_sriov.c
@@ -243,7 +243,8 @@ static int efx_sriov_memcpy(struct efx_nic *efx, struct efx_memcpy_req *req,
MCDI_DECLARE_BUF(inbuf, MCDI_CTL_SDU_LEN_MAX_V1);
MCDI_DECLARE_STRUCT_PTR(record);
unsigned int index, used;
- u32 from_rid, from_hi, from_lo;
+ u64 from_addr;
+ u32 from_rid;
int rc;
mb(); /* Finish writing source/reading dest before DMA starts */
@@ -258,14 +259,11 @@ static int efx_sriov_memcpy(struct efx_nic *efx, struct efx_memcpy_req *req,
count);
MCDI_SET_DWORD(record, MEMCPY_RECORD_TYPEDEF_TO_RID,
req->to_rid);
- MCDI_SET_DWORD(record, MEMCPY_RECORD_TYPEDEF_TO_ADDR_LO,
- (u32)req->to_addr);
- MCDI_SET_DWORD(record, MEMCPY_RECORD_TYPEDEF_TO_ADDR_HI,
- (u32)(req->to_addr >> 32));
+ MCDI_SET_QWORD(record, MEMCPY_RECORD_TYPEDEF_TO_ADDR,
+ req->to_addr);
if (req->from_buf == NULL) {
from_rid = req->from_rid;
- from_lo = (u32)req->from_addr;
- from_hi = (u32)(req->from_addr >> 32);
+ from_addr = req->from_addr;
} else {
if (WARN_ON(used + req->length >
MCDI_CTL_SDU_LEN_MAX_V1)) {
@@ -274,18 +272,15 @@ static int efx_sriov_memcpy(struct efx_nic *efx, struct efx_memcpy_req *req,
}
from_rid = MC_CMD_MEMCPY_RECORD_TYPEDEF_RID_INLINE;
- from_lo = used;
- from_hi = 0;
+ from_addr = used;
memcpy(_MCDI_PTR(inbuf, used), req->from_buf,
req->length);
used += req->length;
}
MCDI_SET_DWORD(record, MEMCPY_RECORD_TYPEDEF_FROM_RID, from_rid);
- MCDI_SET_DWORD(record, MEMCPY_RECORD_TYPEDEF_FROM_ADDR_LO,
- from_lo);
- MCDI_SET_DWORD(record, MEMCPY_RECORD_TYPEDEF_FROM_ADDR_HI,
- from_hi);
+ MCDI_SET_QWORD(record, MEMCPY_RECORD_TYPEDEF_FROM_ADDR,
+ from_addr);
MCDI_SET_DWORD(record, MEMCPY_RECORD_TYPEDEF_LENGTH,
req->length);
--
Ben Hutchings, Staff Engineer, Solarflare
Not speaking for my employer; that's the marketing department's job.
They asked us to note that Solarflare product names are trademarked.
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