* [Intel-wired-lan] [PATCH iwl-next] iavf: Remove queue tracking fields from iavf_adminq_ring
@ 2023-10-26 8:39 ` Ivan Vecera
0 siblings, 0 replies; 10+ messages in thread
From: Ivan Vecera @ 2023-10-26 8:39 UTC (permalink / raw)
To: netdev
Cc: Wojciech Drewek, intel-wired-lan, Jesse Brandeburg, linux-kernel,
Eric Dumazet, Tony Nguyen, Jacob Keller, Jakub Kicinski,
Paolo Abeni, David S. Miller
Fields 'head', 'tail', 'len', 'bah' and 'bal' in iavf_adminq_ring
are used to store register offsets. These offsets are initialized
and remains constant so there is no need to store them in the
iavf_adminq_ring structure.
Remove these fields from iavf_adminq_ring and use register offset
constants instead. Remove iavf_adminq_init_regs() that originally
stores these constants into these fields.
Finally improve iavf_check_asq_alive() that assumes that
non-zero value of hw->aq.asq.len indicates fully initialized
AdminQ send queue. Replace it by check for non-zero value
of field hw->aq.asq.count that is non-zero when the sending
queue is initialized and is zeroed during shutdown of
the queue.
Signed-off-by: Ivan Vecera <ivecera@redhat.com>
---
drivers/net/ethernet/intel/iavf/iavf_adminq.c | 86 +++++++------------
drivers/net/ethernet/intel/iavf/iavf_adminq.h | 7 --
drivers/net/ethernet/intel/iavf/iavf_common.c | 8 +-
drivers/net/ethernet/intel/iavf/iavf_main.c | 8 +-
4 files changed, 39 insertions(+), 70 deletions(-)
diff --git a/drivers/net/ethernet/intel/iavf/iavf_adminq.c b/drivers/net/ethernet/intel/iavf/iavf_adminq.c
index 9ffbd24d83cb..82fcd18ad660 100644
--- a/drivers/net/ethernet/intel/iavf/iavf_adminq.c
+++ b/drivers/net/ethernet/intel/iavf/iavf_adminq.c
@@ -7,27 +7,6 @@
#include "iavf_adminq.h"
#include "iavf_prototype.h"
-/**
- * iavf_adminq_init_regs - Initialize AdminQ registers
- * @hw: pointer to the hardware structure
- *
- * This assumes the alloc_asq and alloc_arq functions have already been called
- **/
-static void iavf_adminq_init_regs(struct iavf_hw *hw)
-{
- /* set head and tail registers in our local struct */
- hw->aq.asq.tail = IAVF_VF_ATQT1;
- hw->aq.asq.head = IAVF_VF_ATQH1;
- hw->aq.asq.len = IAVF_VF_ATQLEN1;
- hw->aq.asq.bal = IAVF_VF_ATQBAL1;
- hw->aq.asq.bah = IAVF_VF_ATQBAH1;
- hw->aq.arq.tail = IAVF_VF_ARQT1;
- hw->aq.arq.head = IAVF_VF_ARQH1;
- hw->aq.arq.len = IAVF_VF_ARQLEN1;
- hw->aq.arq.bal = IAVF_VF_ARQBAL1;
- hw->aq.arq.bah = IAVF_VF_ARQBAH1;
-}
-
/**
* iavf_alloc_adminq_asq_ring - Allocate Admin Queue send rings
* @hw: pointer to the hardware structure
@@ -259,17 +238,17 @@ static enum iavf_status iavf_config_asq_regs(struct iavf_hw *hw)
u32 reg = 0;
/* Clear Head and Tail */
- wr32(hw, hw->aq.asq.head, 0);
- wr32(hw, hw->aq.asq.tail, 0);
+ wr32(hw, IAVF_VF_ATQH1, 0);
+ wr32(hw, IAVF_VF_ATQT1, 0);
/* set starting point */
- wr32(hw, hw->aq.asq.len, (hw->aq.num_asq_entries |
+ wr32(hw, IAVF_VF_ATQLEN1, (hw->aq.num_asq_entries |
IAVF_VF_ATQLEN1_ATQENABLE_MASK));
- wr32(hw, hw->aq.asq.bal, lower_32_bits(hw->aq.asq.desc_buf.pa));
- wr32(hw, hw->aq.asq.bah, upper_32_bits(hw->aq.asq.desc_buf.pa));
+ wr32(hw, IAVF_VF_ATQBAL1, lower_32_bits(hw->aq.asq.desc_buf.pa));
+ wr32(hw, IAVF_VF_ATQBAH1, upper_32_bits(hw->aq.asq.desc_buf.pa));
/* Check one register to verify that config was applied */
- reg = rd32(hw, hw->aq.asq.bal);
+ reg = rd32(hw, IAVF_VF_ATQBAL1);
if (reg != lower_32_bits(hw->aq.asq.desc_buf.pa))
ret_code = IAVF_ERR_ADMIN_QUEUE_ERROR;
@@ -288,20 +267,20 @@ static enum iavf_status iavf_config_arq_regs(struct iavf_hw *hw)
u32 reg = 0;
/* Clear Head and Tail */
- wr32(hw, hw->aq.arq.head, 0);
- wr32(hw, hw->aq.arq.tail, 0);
+ wr32(hw, IAVF_VF_ARQH1, 0);
+ wr32(hw, IAVF_VF_ARQT1, 0);
/* set starting point */
- wr32(hw, hw->aq.arq.len, (hw->aq.num_arq_entries |
+ wr32(hw, IAVF_VF_ARQLEN1, (hw->aq.num_arq_entries |
IAVF_VF_ARQLEN1_ARQENABLE_MASK));
- wr32(hw, hw->aq.arq.bal, lower_32_bits(hw->aq.arq.desc_buf.pa));
- wr32(hw, hw->aq.arq.bah, upper_32_bits(hw->aq.arq.desc_buf.pa));
+ wr32(hw, IAVF_VF_ARQBAL1, lower_32_bits(hw->aq.arq.desc_buf.pa));
+ wr32(hw, IAVF_VF_ARQBAH1, upper_32_bits(hw->aq.arq.desc_buf.pa));
/* Update tail in the HW to post pre-allocated buffers */
- wr32(hw, hw->aq.arq.tail, hw->aq.num_arq_entries - 1);
+ wr32(hw, IAVF_VF_ARQT1, hw->aq.num_arq_entries - 1);
/* Check one register to verify that config was applied */
- reg = rd32(hw, hw->aq.arq.bal);
+ reg = rd32(hw, IAVF_VF_ARQBAL1);
if (reg != lower_32_bits(hw->aq.arq.desc_buf.pa))
ret_code = IAVF_ERR_ADMIN_QUEUE_ERROR;
@@ -455,11 +434,11 @@ static enum iavf_status iavf_shutdown_asq(struct iavf_hw *hw)
}
/* Stop firmware AdminQ processing */
- wr32(hw, hw->aq.asq.head, 0);
- wr32(hw, hw->aq.asq.tail, 0);
- wr32(hw, hw->aq.asq.len, 0);
- wr32(hw, hw->aq.asq.bal, 0);
- wr32(hw, hw->aq.asq.bah, 0);
+ wr32(hw, IAVF_VF_ATQH1, 0);
+ wr32(hw, IAVF_VF_ATQT1, 0);
+ wr32(hw, IAVF_VF_ATQLEN1, 0);
+ wr32(hw, IAVF_VF_ATQBAL1, 0);
+ wr32(hw, IAVF_VF_ATQBAH1, 0);
hw->aq.asq.count = 0; /* to indicate uninitialized queue */
@@ -489,11 +468,11 @@ static enum iavf_status iavf_shutdown_arq(struct iavf_hw *hw)
}
/* Stop firmware AdminQ processing */
- wr32(hw, hw->aq.arq.head, 0);
- wr32(hw, hw->aq.arq.tail, 0);
- wr32(hw, hw->aq.arq.len, 0);
- wr32(hw, hw->aq.arq.bal, 0);
- wr32(hw, hw->aq.arq.bah, 0);
+ wr32(hw, IAVF_VF_ARQH1, 0);
+ wr32(hw, IAVF_VF_ARQT1, 0);
+ wr32(hw, IAVF_VF_ARQLEN1, 0);
+ wr32(hw, IAVF_VF_ARQBAL1, 0);
+ wr32(hw, IAVF_VF_ARQBAH1, 0);
hw->aq.arq.count = 0; /* to indicate uninitialized queue */
@@ -529,9 +508,6 @@ enum iavf_status iavf_init_adminq(struct iavf_hw *hw)
goto init_adminq_exit;
}
- /* Set up register offsets */
- iavf_adminq_init_regs(hw);
-
/* setup ASQ command write back timeout */
hw->aq.asq_cmd_timeout = IAVF_ASQ_CMD_TIMEOUT;
@@ -587,9 +563,9 @@ static u16 iavf_clean_asq(struct iavf_hw *hw)
desc = IAVF_ADMINQ_DESC(*asq, ntc);
details = IAVF_ADMINQ_DETAILS(*asq, ntc);
- while (rd32(hw, hw->aq.asq.head) != ntc) {
+ while (rd32(hw, IAVF_VF_ATQH1) != ntc) {
iavf_debug(hw, IAVF_DEBUG_AQ_MESSAGE,
- "ntc %d head %d.\n", ntc, rd32(hw, hw->aq.asq.head));
+ "ntc %d head %d.\n", ntc, rd32(hw, IAVF_VF_ATQH1));
if (details->callback) {
IAVF_ADMINQ_CALLBACK cb_func =
@@ -624,7 +600,7 @@ bool iavf_asq_done(struct iavf_hw *hw)
/* AQ designers suggest use of head for better
* timing reliability than DD bit
*/
- return rd32(hw, hw->aq.asq.head) == hw->aq.asq.next_to_use;
+ return rd32(hw, IAVF_VF_ATQH1) == hw->aq.asq.next_to_use;
}
/**
@@ -663,7 +639,7 @@ enum iavf_status iavf_asq_send_command(struct iavf_hw *hw,
hw->aq.asq_last_status = IAVF_AQ_RC_OK;
- val = rd32(hw, hw->aq.asq.head);
+ val = rd32(hw, IAVF_VF_ATQH1);
if (val >= hw->aq.num_asq_entries) {
iavf_debug(hw, IAVF_DEBUG_AQ_MESSAGE,
"AQTX: head overrun at %d\n", val);
@@ -755,7 +731,7 @@ enum iavf_status iavf_asq_send_command(struct iavf_hw *hw,
if (hw->aq.asq.next_to_use == hw->aq.asq.count)
hw->aq.asq.next_to_use = 0;
if (!details->postpone)
- wr32(hw, hw->aq.asq.tail, hw->aq.asq.next_to_use);
+ wr32(hw, IAVF_VF_ATQT1, hw->aq.asq.next_to_use);
/* if cmd_details are not defined or async flag is not set,
* we need to wait for desc write back
@@ -810,7 +786,7 @@ enum iavf_status iavf_asq_send_command(struct iavf_hw *hw,
/* update the error if time out occurred */
if ((!cmd_completed) &&
(!details->async && !details->postpone)) {
- if (rd32(hw, hw->aq.asq.len) & IAVF_VF_ATQLEN1_ATQCRIT_MASK) {
+ if (rd32(hw, IAVF_VF_ATQLEN1) & IAVF_VF_ATQLEN1_ATQCRIT_MASK) {
iavf_debug(hw, IAVF_DEBUG_AQ_MESSAGE,
"AQTX: AQ Critical error.\n");
status = IAVF_ERR_ADMIN_QUEUE_CRITICAL_ERROR;
@@ -878,7 +854,7 @@ enum iavf_status iavf_clean_arq_element(struct iavf_hw *hw,
}
/* set next_to_use to head */
- ntu = rd32(hw, hw->aq.arq.head) & IAVF_VF_ARQH1_ARQH_MASK;
+ ntu = rd32(hw, IAVF_VF_ARQH1) & IAVF_VF_ARQH1_ARQH_MASK;
if (ntu == ntc) {
/* nothing to do - shouldn't need to update ring's values */
ret_code = IAVF_ERR_ADMIN_QUEUE_NO_WORK;
@@ -926,7 +902,7 @@ enum iavf_status iavf_clean_arq_element(struct iavf_hw *hw,
desc->params.external.addr_low = cpu_to_le32(lower_32_bits(bi->pa));
/* set tail = the last cleaned desc index. */
- wr32(hw, hw->aq.arq.tail, ntc);
+ wr32(hw, IAVF_VF_ARQT1, ntc);
/* ntc is updated to tail + 1 */
ntc++;
if (ntc == hw->aq.num_arq_entries)
diff --git a/drivers/net/ethernet/intel/iavf/iavf_adminq.h b/drivers/net/ethernet/intel/iavf/iavf_adminq.h
index 1f60518eb0e5..406506f64bdd 100644
--- a/drivers/net/ethernet/intel/iavf/iavf_adminq.h
+++ b/drivers/net/ethernet/intel/iavf/iavf_adminq.h
@@ -29,13 +29,6 @@ struct iavf_adminq_ring {
/* used for interrupt processing */
u16 next_to_use;
u16 next_to_clean;
-
- /* used for queue tracking */
- u32 head;
- u32 tail;
- u32 len;
- u32 bah;
- u32 bal;
};
/* ASQ transaction details */
diff --git a/drivers/net/ethernet/intel/iavf/iavf_common.c b/drivers/net/ethernet/intel/iavf/iavf_common.c
index 8091e6feca01..89d2bce529ae 100644
--- a/drivers/net/ethernet/intel/iavf/iavf_common.c
+++ b/drivers/net/ethernet/intel/iavf/iavf_common.c
@@ -279,11 +279,11 @@ void iavf_debug_aq(struct iavf_hw *hw, enum iavf_debug_mask mask, void *desc,
**/
bool iavf_check_asq_alive(struct iavf_hw *hw)
{
- if (hw->aq.asq.len)
- return !!(rd32(hw, hw->aq.asq.len) &
- IAVF_VF_ATQLEN1_ATQENABLE_MASK);
- else
+ /* Check if the queue is initialized */
+ if (!hw->aq.asq.count)
return false;
+
+ return !!(rd32(hw, IAVF_VF_ATQLEN1) & IAVF_VF_ATQLEN1_ATQENABLE_MASK);
}
/**
diff --git a/drivers/net/ethernet/intel/iavf/iavf_main.c b/drivers/net/ethernet/intel/iavf/iavf_main.c
index 6e27b7938b8a..146755498feb 100644
--- a/drivers/net/ethernet/intel/iavf/iavf_main.c
+++ b/drivers/net/ethernet/intel/iavf/iavf_main.c
@@ -3253,7 +3253,7 @@ static void iavf_adminq_task(struct work_struct *work)
goto freedom;
/* check for error indications */
- val = rd32(hw, hw->aq.arq.len);
+ val = rd32(hw, IAVF_VF_ARQLEN1);
if (val == 0xdeadbeef || val == 0xffffffff) /* device in reset */
goto freedom;
oldval = val;
@@ -3270,9 +3270,9 @@ static void iavf_adminq_task(struct work_struct *work)
val &= ~IAVF_VF_ARQLEN1_ARQCRIT_MASK;
}
if (oldval != val)
- wr32(hw, hw->aq.arq.len, val);
+ wr32(hw, IAVF_VF_ARQLEN1, val);
- val = rd32(hw, hw->aq.asq.len);
+ val = rd32(hw, IAVF_VF_ATQLEN1);
oldval = val;
if (val & IAVF_VF_ATQLEN1_ATQVFE_MASK) {
dev_info(&adapter->pdev->dev, "ASQ VF Error detected\n");
@@ -3287,7 +3287,7 @@ static void iavf_adminq_task(struct work_struct *work)
val &= ~IAVF_VF_ATQLEN1_ATQCRIT_MASK;
}
if (oldval != val)
- wr32(hw, hw->aq.asq.len, val);
+ wr32(hw, IAVF_VF_ATQLEN1, val);
freedom:
kfree(event.msg_buf);
--
2.41.0
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^ permalink raw reply related [flat|nested] 10+ messages in thread
* [PATCH iwl-next] iavf: Remove queue tracking fields from iavf_adminq_ring
@ 2023-10-26 8:39 ` Ivan Vecera
0 siblings, 0 replies; 10+ messages in thread
From: Ivan Vecera @ 2023-10-26 8:39 UTC (permalink / raw)
To: netdev
Cc: Jesse Brandeburg, Tony Nguyen, David S. Miller, Eric Dumazet,
Jakub Kicinski, Paolo Abeni, intel-wired-lan, linux-kernel,
Jacob Keller, Wojciech Drewek
Fields 'head', 'tail', 'len', 'bah' and 'bal' in iavf_adminq_ring
are used to store register offsets. These offsets are initialized
and remains constant so there is no need to store them in the
iavf_adminq_ring structure.
Remove these fields from iavf_adminq_ring and use register offset
constants instead. Remove iavf_adminq_init_regs() that originally
stores these constants into these fields.
Finally improve iavf_check_asq_alive() that assumes that
non-zero value of hw->aq.asq.len indicates fully initialized
AdminQ send queue. Replace it by check for non-zero value
of field hw->aq.asq.count that is non-zero when the sending
queue is initialized and is zeroed during shutdown of
the queue.
Signed-off-by: Ivan Vecera <ivecera@redhat.com>
---
drivers/net/ethernet/intel/iavf/iavf_adminq.c | 86 +++++++------------
drivers/net/ethernet/intel/iavf/iavf_adminq.h | 7 --
drivers/net/ethernet/intel/iavf/iavf_common.c | 8 +-
drivers/net/ethernet/intel/iavf/iavf_main.c | 8 +-
4 files changed, 39 insertions(+), 70 deletions(-)
diff --git a/drivers/net/ethernet/intel/iavf/iavf_adminq.c b/drivers/net/ethernet/intel/iavf/iavf_adminq.c
index 9ffbd24d83cb..82fcd18ad660 100644
--- a/drivers/net/ethernet/intel/iavf/iavf_adminq.c
+++ b/drivers/net/ethernet/intel/iavf/iavf_adminq.c
@@ -7,27 +7,6 @@
#include "iavf_adminq.h"
#include "iavf_prototype.h"
-/**
- * iavf_adminq_init_regs - Initialize AdminQ registers
- * @hw: pointer to the hardware structure
- *
- * This assumes the alloc_asq and alloc_arq functions have already been called
- **/
-static void iavf_adminq_init_regs(struct iavf_hw *hw)
-{
- /* set head and tail registers in our local struct */
- hw->aq.asq.tail = IAVF_VF_ATQT1;
- hw->aq.asq.head = IAVF_VF_ATQH1;
- hw->aq.asq.len = IAVF_VF_ATQLEN1;
- hw->aq.asq.bal = IAVF_VF_ATQBAL1;
- hw->aq.asq.bah = IAVF_VF_ATQBAH1;
- hw->aq.arq.tail = IAVF_VF_ARQT1;
- hw->aq.arq.head = IAVF_VF_ARQH1;
- hw->aq.arq.len = IAVF_VF_ARQLEN1;
- hw->aq.arq.bal = IAVF_VF_ARQBAL1;
- hw->aq.arq.bah = IAVF_VF_ARQBAH1;
-}
-
/**
* iavf_alloc_adminq_asq_ring - Allocate Admin Queue send rings
* @hw: pointer to the hardware structure
@@ -259,17 +238,17 @@ static enum iavf_status iavf_config_asq_regs(struct iavf_hw *hw)
u32 reg = 0;
/* Clear Head and Tail */
- wr32(hw, hw->aq.asq.head, 0);
- wr32(hw, hw->aq.asq.tail, 0);
+ wr32(hw, IAVF_VF_ATQH1, 0);
+ wr32(hw, IAVF_VF_ATQT1, 0);
/* set starting point */
- wr32(hw, hw->aq.asq.len, (hw->aq.num_asq_entries |
+ wr32(hw, IAVF_VF_ATQLEN1, (hw->aq.num_asq_entries |
IAVF_VF_ATQLEN1_ATQENABLE_MASK));
- wr32(hw, hw->aq.asq.bal, lower_32_bits(hw->aq.asq.desc_buf.pa));
- wr32(hw, hw->aq.asq.bah, upper_32_bits(hw->aq.asq.desc_buf.pa));
+ wr32(hw, IAVF_VF_ATQBAL1, lower_32_bits(hw->aq.asq.desc_buf.pa));
+ wr32(hw, IAVF_VF_ATQBAH1, upper_32_bits(hw->aq.asq.desc_buf.pa));
/* Check one register to verify that config was applied */
- reg = rd32(hw, hw->aq.asq.bal);
+ reg = rd32(hw, IAVF_VF_ATQBAL1);
if (reg != lower_32_bits(hw->aq.asq.desc_buf.pa))
ret_code = IAVF_ERR_ADMIN_QUEUE_ERROR;
@@ -288,20 +267,20 @@ static enum iavf_status iavf_config_arq_regs(struct iavf_hw *hw)
u32 reg = 0;
/* Clear Head and Tail */
- wr32(hw, hw->aq.arq.head, 0);
- wr32(hw, hw->aq.arq.tail, 0);
+ wr32(hw, IAVF_VF_ARQH1, 0);
+ wr32(hw, IAVF_VF_ARQT1, 0);
/* set starting point */
- wr32(hw, hw->aq.arq.len, (hw->aq.num_arq_entries |
+ wr32(hw, IAVF_VF_ARQLEN1, (hw->aq.num_arq_entries |
IAVF_VF_ARQLEN1_ARQENABLE_MASK));
- wr32(hw, hw->aq.arq.bal, lower_32_bits(hw->aq.arq.desc_buf.pa));
- wr32(hw, hw->aq.arq.bah, upper_32_bits(hw->aq.arq.desc_buf.pa));
+ wr32(hw, IAVF_VF_ARQBAL1, lower_32_bits(hw->aq.arq.desc_buf.pa));
+ wr32(hw, IAVF_VF_ARQBAH1, upper_32_bits(hw->aq.arq.desc_buf.pa));
/* Update tail in the HW to post pre-allocated buffers */
- wr32(hw, hw->aq.arq.tail, hw->aq.num_arq_entries - 1);
+ wr32(hw, IAVF_VF_ARQT1, hw->aq.num_arq_entries - 1);
/* Check one register to verify that config was applied */
- reg = rd32(hw, hw->aq.arq.bal);
+ reg = rd32(hw, IAVF_VF_ARQBAL1);
if (reg != lower_32_bits(hw->aq.arq.desc_buf.pa))
ret_code = IAVF_ERR_ADMIN_QUEUE_ERROR;
@@ -455,11 +434,11 @@ static enum iavf_status iavf_shutdown_asq(struct iavf_hw *hw)
}
/* Stop firmware AdminQ processing */
- wr32(hw, hw->aq.asq.head, 0);
- wr32(hw, hw->aq.asq.tail, 0);
- wr32(hw, hw->aq.asq.len, 0);
- wr32(hw, hw->aq.asq.bal, 0);
- wr32(hw, hw->aq.asq.bah, 0);
+ wr32(hw, IAVF_VF_ATQH1, 0);
+ wr32(hw, IAVF_VF_ATQT1, 0);
+ wr32(hw, IAVF_VF_ATQLEN1, 0);
+ wr32(hw, IAVF_VF_ATQBAL1, 0);
+ wr32(hw, IAVF_VF_ATQBAH1, 0);
hw->aq.asq.count = 0; /* to indicate uninitialized queue */
@@ -489,11 +468,11 @@ static enum iavf_status iavf_shutdown_arq(struct iavf_hw *hw)
}
/* Stop firmware AdminQ processing */
- wr32(hw, hw->aq.arq.head, 0);
- wr32(hw, hw->aq.arq.tail, 0);
- wr32(hw, hw->aq.arq.len, 0);
- wr32(hw, hw->aq.arq.bal, 0);
- wr32(hw, hw->aq.arq.bah, 0);
+ wr32(hw, IAVF_VF_ARQH1, 0);
+ wr32(hw, IAVF_VF_ARQT1, 0);
+ wr32(hw, IAVF_VF_ARQLEN1, 0);
+ wr32(hw, IAVF_VF_ARQBAL1, 0);
+ wr32(hw, IAVF_VF_ARQBAH1, 0);
hw->aq.arq.count = 0; /* to indicate uninitialized queue */
@@ -529,9 +508,6 @@ enum iavf_status iavf_init_adminq(struct iavf_hw *hw)
goto init_adminq_exit;
}
- /* Set up register offsets */
- iavf_adminq_init_regs(hw);
-
/* setup ASQ command write back timeout */
hw->aq.asq_cmd_timeout = IAVF_ASQ_CMD_TIMEOUT;
@@ -587,9 +563,9 @@ static u16 iavf_clean_asq(struct iavf_hw *hw)
desc = IAVF_ADMINQ_DESC(*asq, ntc);
details = IAVF_ADMINQ_DETAILS(*asq, ntc);
- while (rd32(hw, hw->aq.asq.head) != ntc) {
+ while (rd32(hw, IAVF_VF_ATQH1) != ntc) {
iavf_debug(hw, IAVF_DEBUG_AQ_MESSAGE,
- "ntc %d head %d.\n", ntc, rd32(hw, hw->aq.asq.head));
+ "ntc %d head %d.\n", ntc, rd32(hw, IAVF_VF_ATQH1));
if (details->callback) {
IAVF_ADMINQ_CALLBACK cb_func =
@@ -624,7 +600,7 @@ bool iavf_asq_done(struct iavf_hw *hw)
/* AQ designers suggest use of head for better
* timing reliability than DD bit
*/
- return rd32(hw, hw->aq.asq.head) == hw->aq.asq.next_to_use;
+ return rd32(hw, IAVF_VF_ATQH1) == hw->aq.asq.next_to_use;
}
/**
@@ -663,7 +639,7 @@ enum iavf_status iavf_asq_send_command(struct iavf_hw *hw,
hw->aq.asq_last_status = IAVF_AQ_RC_OK;
- val = rd32(hw, hw->aq.asq.head);
+ val = rd32(hw, IAVF_VF_ATQH1);
if (val >= hw->aq.num_asq_entries) {
iavf_debug(hw, IAVF_DEBUG_AQ_MESSAGE,
"AQTX: head overrun at %d\n", val);
@@ -755,7 +731,7 @@ enum iavf_status iavf_asq_send_command(struct iavf_hw *hw,
if (hw->aq.asq.next_to_use == hw->aq.asq.count)
hw->aq.asq.next_to_use = 0;
if (!details->postpone)
- wr32(hw, hw->aq.asq.tail, hw->aq.asq.next_to_use);
+ wr32(hw, IAVF_VF_ATQT1, hw->aq.asq.next_to_use);
/* if cmd_details are not defined or async flag is not set,
* we need to wait for desc write back
@@ -810,7 +786,7 @@ enum iavf_status iavf_asq_send_command(struct iavf_hw *hw,
/* update the error if time out occurred */
if ((!cmd_completed) &&
(!details->async && !details->postpone)) {
- if (rd32(hw, hw->aq.asq.len) & IAVF_VF_ATQLEN1_ATQCRIT_MASK) {
+ if (rd32(hw, IAVF_VF_ATQLEN1) & IAVF_VF_ATQLEN1_ATQCRIT_MASK) {
iavf_debug(hw, IAVF_DEBUG_AQ_MESSAGE,
"AQTX: AQ Critical error.\n");
status = IAVF_ERR_ADMIN_QUEUE_CRITICAL_ERROR;
@@ -878,7 +854,7 @@ enum iavf_status iavf_clean_arq_element(struct iavf_hw *hw,
}
/* set next_to_use to head */
- ntu = rd32(hw, hw->aq.arq.head) & IAVF_VF_ARQH1_ARQH_MASK;
+ ntu = rd32(hw, IAVF_VF_ARQH1) & IAVF_VF_ARQH1_ARQH_MASK;
if (ntu == ntc) {
/* nothing to do - shouldn't need to update ring's values */
ret_code = IAVF_ERR_ADMIN_QUEUE_NO_WORK;
@@ -926,7 +902,7 @@ enum iavf_status iavf_clean_arq_element(struct iavf_hw *hw,
desc->params.external.addr_low = cpu_to_le32(lower_32_bits(bi->pa));
/* set tail = the last cleaned desc index. */
- wr32(hw, hw->aq.arq.tail, ntc);
+ wr32(hw, IAVF_VF_ARQT1, ntc);
/* ntc is updated to tail + 1 */
ntc++;
if (ntc == hw->aq.num_arq_entries)
diff --git a/drivers/net/ethernet/intel/iavf/iavf_adminq.h b/drivers/net/ethernet/intel/iavf/iavf_adminq.h
index 1f60518eb0e5..406506f64bdd 100644
--- a/drivers/net/ethernet/intel/iavf/iavf_adminq.h
+++ b/drivers/net/ethernet/intel/iavf/iavf_adminq.h
@@ -29,13 +29,6 @@ struct iavf_adminq_ring {
/* used for interrupt processing */
u16 next_to_use;
u16 next_to_clean;
-
- /* used for queue tracking */
- u32 head;
- u32 tail;
- u32 len;
- u32 bah;
- u32 bal;
};
/* ASQ transaction details */
diff --git a/drivers/net/ethernet/intel/iavf/iavf_common.c b/drivers/net/ethernet/intel/iavf/iavf_common.c
index 8091e6feca01..89d2bce529ae 100644
--- a/drivers/net/ethernet/intel/iavf/iavf_common.c
+++ b/drivers/net/ethernet/intel/iavf/iavf_common.c
@@ -279,11 +279,11 @@ void iavf_debug_aq(struct iavf_hw *hw, enum iavf_debug_mask mask, void *desc,
**/
bool iavf_check_asq_alive(struct iavf_hw *hw)
{
- if (hw->aq.asq.len)
- return !!(rd32(hw, hw->aq.asq.len) &
- IAVF_VF_ATQLEN1_ATQENABLE_MASK);
- else
+ /* Check if the queue is initialized */
+ if (!hw->aq.asq.count)
return false;
+
+ return !!(rd32(hw, IAVF_VF_ATQLEN1) & IAVF_VF_ATQLEN1_ATQENABLE_MASK);
}
/**
diff --git a/drivers/net/ethernet/intel/iavf/iavf_main.c b/drivers/net/ethernet/intel/iavf/iavf_main.c
index 6e27b7938b8a..146755498feb 100644
--- a/drivers/net/ethernet/intel/iavf/iavf_main.c
+++ b/drivers/net/ethernet/intel/iavf/iavf_main.c
@@ -3253,7 +3253,7 @@ static void iavf_adminq_task(struct work_struct *work)
goto freedom;
/* check for error indications */
- val = rd32(hw, hw->aq.arq.len);
+ val = rd32(hw, IAVF_VF_ARQLEN1);
if (val == 0xdeadbeef || val == 0xffffffff) /* device in reset */
goto freedom;
oldval = val;
@@ -3270,9 +3270,9 @@ static void iavf_adminq_task(struct work_struct *work)
val &= ~IAVF_VF_ARQLEN1_ARQCRIT_MASK;
}
if (oldval != val)
- wr32(hw, hw->aq.arq.len, val);
+ wr32(hw, IAVF_VF_ARQLEN1, val);
- val = rd32(hw, hw->aq.asq.len);
+ val = rd32(hw, IAVF_VF_ATQLEN1);
oldval = val;
if (val & IAVF_VF_ATQLEN1_ATQVFE_MASK) {
dev_info(&adapter->pdev->dev, "ASQ VF Error detected\n");
@@ -3287,7 +3287,7 @@ static void iavf_adminq_task(struct work_struct *work)
val &= ~IAVF_VF_ATQLEN1_ATQCRIT_MASK;
}
if (oldval != val)
- wr32(hw, hw->aq.asq.len, val);
+ wr32(hw, IAVF_VF_ATQLEN1, val);
freedom:
kfree(event.msg_buf);
--
2.41.0
^ permalink raw reply related [flat|nested] 10+ messages in thread
* Re: [PATCH iwl-next] iavf: Remove queue tracking fields from iavf_adminq_ring
2023-10-26 8:39 ` Ivan Vecera
@ 2023-10-26 9:10 ` Przemek Kitszel
-1 siblings, 0 replies; 10+ messages in thread
From: Przemek Kitszel @ 2023-10-26 9:10 UTC (permalink / raw)
To: Ivan Vecera, netdev
Cc: Jesse Brandeburg, Tony Nguyen, David S. Miller, Eric Dumazet,
Jakub Kicinski, Paolo Abeni, intel-wired-lan, linux-kernel,
Jacob Keller, Wojciech Drewek
On 10/26/23 10:39, Ivan Vecera wrote:
> Fields 'head', 'tail', 'len', 'bah' and 'bal' in iavf_adminq_ring
> are used to store register offsets. These offsets are initialized
> and remains constant so there is no need to store them in the
> iavf_adminq_ring structure.
>
> Remove these fields from iavf_adminq_ring and use register offset
> constants instead. Remove iavf_adminq_init_regs() that originally
> stores these constants into these fields.
>
> Finally improve iavf_check_asq_alive() that assumes that
> non-zero value of hw->aq.asq.len indicates fully initialized
> AdminQ send queue. Replace it by check for non-zero value
> of field hw->aq.asq.count that is non-zero when the sending
> queue is initialized and is zeroed during shutdown of
> the queue.
That part could be a separate commit, perhaps even for -net
>
> Signed-off-by: Ivan Vecera <ivecera@redhat.com>
> ---
> drivers/net/ethernet/intel/iavf/iavf_adminq.c | 86 +++++++------------
> drivers/net/ethernet/intel/iavf/iavf_adminq.h | 7 --
> drivers/net/ethernet/intel/iavf/iavf_common.c | 8 +-
> drivers/net/ethernet/intel/iavf/iavf_main.c | 8 +-
> 4 files changed, 39 insertions(+), 70 deletions(-)
anyway, this is fine, so
Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@intel.com>
>
> diff --git a/drivers/net/ethernet/intel/iavf/iavf_adminq.c b/drivers/net/ethernet/intel/iavf/iavf_adminq.c
> index 9ffbd24d83cb..82fcd18ad660 100644
> --- a/drivers/net/ethernet/intel/iavf/iavf_adminq.c
> +++ b/drivers/net/ethernet/intel/iavf/iavf_adminq.c
> @@ -7,27 +7,6 @@
> #include "iavf_adminq.h"
> #include "iavf_prototype.h"
>
> -/**
> - * iavf_adminq_init_regs - Initialize AdminQ registers
> - * @hw: pointer to the hardware structure
> - *
> - * This assumes the alloc_asq and alloc_arq functions have already been called
> - **/
> -static void iavf_adminq_init_regs(struct iavf_hw *hw)
> -{
> - /* set head and tail registers in our local struct */
> - hw->aq.asq.tail = IAVF_VF_ATQT1;
> - hw->aq.asq.head = IAVF_VF_ATQH1;
> - hw->aq.asq.len = IAVF_VF_ATQLEN1;
> - hw->aq.asq.bal = IAVF_VF_ATQBAL1;
> - hw->aq.asq.bah = IAVF_VF_ATQBAH1;
> - hw->aq.arq.tail = IAVF_VF_ARQT1;
> - hw->aq.arq.head = IAVF_VF_ARQH1;
> - hw->aq.arq.len = IAVF_VF_ARQLEN1;
> - hw->aq.arq.bal = IAVF_VF_ARQBAL1;
> - hw->aq.arq.bah = IAVF_VF_ARQBAH1;
> -}
> -
> /**
> * iavf_alloc_adminq_asq_ring - Allocate Admin Queue send rings
> * @hw: pointer to the hardware structure
> @@ -259,17 +238,17 @@ static enum iavf_status iavf_config_asq_regs(struct iavf_hw *hw)
> u32 reg = 0;
>
> /* Clear Head and Tail */
> - wr32(hw, hw->aq.asq.head, 0);
> - wr32(hw, hw->aq.asq.tail, 0);
> + wr32(hw, IAVF_VF_ATQH1, 0);
> + wr32(hw, IAVF_VF_ATQT1, 0);
>
> /* set starting point */
> - wr32(hw, hw->aq.asq.len, (hw->aq.num_asq_entries |
> + wr32(hw, IAVF_VF_ATQLEN1, (hw->aq.num_asq_entries |
> IAVF_VF_ATQLEN1_ATQENABLE_MASK));
> - wr32(hw, hw->aq.asq.bal, lower_32_bits(hw->aq.asq.desc_buf.pa));
> - wr32(hw, hw->aq.asq.bah, upper_32_bits(hw->aq.asq.desc_buf.pa));
> + wr32(hw, IAVF_VF_ATQBAL1, lower_32_bits(hw->aq.asq.desc_buf.pa));
> + wr32(hw, IAVF_VF_ATQBAH1, upper_32_bits(hw->aq.asq.desc_buf.pa));
>
> /* Check one register to verify that config was applied */
> - reg = rd32(hw, hw->aq.asq.bal);
> + reg = rd32(hw, IAVF_VF_ATQBAL1);
> if (reg != lower_32_bits(hw->aq.asq.desc_buf.pa))
> ret_code = IAVF_ERR_ADMIN_QUEUE_ERROR;
>
> @@ -288,20 +267,20 @@ static enum iavf_status iavf_config_arq_regs(struct iavf_hw *hw)
> u32 reg = 0;
>
> /* Clear Head and Tail */
> - wr32(hw, hw->aq.arq.head, 0);
> - wr32(hw, hw->aq.arq.tail, 0);
> + wr32(hw, IAVF_VF_ARQH1, 0);
> + wr32(hw, IAVF_VF_ARQT1, 0);
>
> /* set starting point */
> - wr32(hw, hw->aq.arq.len, (hw->aq.num_arq_entries |
> + wr32(hw, IAVF_VF_ARQLEN1, (hw->aq.num_arq_entries |
> IAVF_VF_ARQLEN1_ARQENABLE_MASK));
> - wr32(hw, hw->aq.arq.bal, lower_32_bits(hw->aq.arq.desc_buf.pa));
> - wr32(hw, hw->aq.arq.bah, upper_32_bits(hw->aq.arq.desc_buf.pa));
> + wr32(hw, IAVF_VF_ARQBAL1, lower_32_bits(hw->aq.arq.desc_buf.pa));
> + wr32(hw, IAVF_VF_ARQBAH1, upper_32_bits(hw->aq.arq.desc_buf.pa));
>
> /* Update tail in the HW to post pre-allocated buffers */
> - wr32(hw, hw->aq.arq.tail, hw->aq.num_arq_entries - 1);
> + wr32(hw, IAVF_VF_ARQT1, hw->aq.num_arq_entries - 1);
>
> /* Check one register to verify that config was applied */
> - reg = rd32(hw, hw->aq.arq.bal);
> + reg = rd32(hw, IAVF_VF_ARQBAL1);
> if (reg != lower_32_bits(hw->aq.arq.desc_buf.pa))
> ret_code = IAVF_ERR_ADMIN_QUEUE_ERROR;
>
> @@ -455,11 +434,11 @@ static enum iavf_status iavf_shutdown_asq(struct iavf_hw *hw)
> }
>
> /* Stop firmware AdminQ processing */
> - wr32(hw, hw->aq.asq.head, 0);
> - wr32(hw, hw->aq.asq.tail, 0);
> - wr32(hw, hw->aq.asq.len, 0);
> - wr32(hw, hw->aq.asq.bal, 0);
> - wr32(hw, hw->aq.asq.bah, 0);
> + wr32(hw, IAVF_VF_ATQH1, 0);
> + wr32(hw, IAVF_VF_ATQT1, 0);
> + wr32(hw, IAVF_VF_ATQLEN1, 0);
> + wr32(hw, IAVF_VF_ATQBAL1, 0);
> + wr32(hw, IAVF_VF_ATQBAH1, 0);
>
> hw->aq.asq.count = 0; /* to indicate uninitialized queue */
>
> @@ -489,11 +468,11 @@ static enum iavf_status iavf_shutdown_arq(struct iavf_hw *hw)
> }
>
> /* Stop firmware AdminQ processing */
> - wr32(hw, hw->aq.arq.head, 0);
> - wr32(hw, hw->aq.arq.tail, 0);
> - wr32(hw, hw->aq.arq.len, 0);
> - wr32(hw, hw->aq.arq.bal, 0);
> - wr32(hw, hw->aq.arq.bah, 0);
> + wr32(hw, IAVF_VF_ARQH1, 0);
> + wr32(hw, IAVF_VF_ARQT1, 0);
> + wr32(hw, IAVF_VF_ARQLEN1, 0);
> + wr32(hw, IAVF_VF_ARQBAL1, 0);
> + wr32(hw, IAVF_VF_ARQBAH1, 0);
>
> hw->aq.arq.count = 0; /* to indicate uninitialized queue */
>
> @@ -529,9 +508,6 @@ enum iavf_status iavf_init_adminq(struct iavf_hw *hw)
> goto init_adminq_exit;
> }
>
> - /* Set up register offsets */
> - iavf_adminq_init_regs(hw);
> -
> /* setup ASQ command write back timeout */
> hw->aq.asq_cmd_timeout = IAVF_ASQ_CMD_TIMEOUT;
>
> @@ -587,9 +563,9 @@ static u16 iavf_clean_asq(struct iavf_hw *hw)
>
> desc = IAVF_ADMINQ_DESC(*asq, ntc);
> details = IAVF_ADMINQ_DETAILS(*asq, ntc);
> - while (rd32(hw, hw->aq.asq.head) != ntc) {
> + while (rd32(hw, IAVF_VF_ATQH1) != ntc) {
> iavf_debug(hw, IAVF_DEBUG_AQ_MESSAGE,
> - "ntc %d head %d.\n", ntc, rd32(hw, hw->aq.asq.head));
> + "ntc %d head %d.\n", ntc, rd32(hw, IAVF_VF_ATQH1));
>
> if (details->callback) {
> IAVF_ADMINQ_CALLBACK cb_func =
> @@ -624,7 +600,7 @@ bool iavf_asq_done(struct iavf_hw *hw)
> /* AQ designers suggest use of head for better
> * timing reliability than DD bit
> */
> - return rd32(hw, hw->aq.asq.head) == hw->aq.asq.next_to_use;
> + return rd32(hw, IAVF_VF_ATQH1) == hw->aq.asq.next_to_use;
> }
>
> /**
> @@ -663,7 +639,7 @@ enum iavf_status iavf_asq_send_command(struct iavf_hw *hw,
>
> hw->aq.asq_last_status = IAVF_AQ_RC_OK;
>
> - val = rd32(hw, hw->aq.asq.head);
> + val = rd32(hw, IAVF_VF_ATQH1);
> if (val >= hw->aq.num_asq_entries) {
> iavf_debug(hw, IAVF_DEBUG_AQ_MESSAGE,
> "AQTX: head overrun at %d\n", val);
> @@ -755,7 +731,7 @@ enum iavf_status iavf_asq_send_command(struct iavf_hw *hw,
> if (hw->aq.asq.next_to_use == hw->aq.asq.count)
> hw->aq.asq.next_to_use = 0;
> if (!details->postpone)
> - wr32(hw, hw->aq.asq.tail, hw->aq.asq.next_to_use);
> + wr32(hw, IAVF_VF_ATQT1, hw->aq.asq.next_to_use);
>
> /* if cmd_details are not defined or async flag is not set,
> * we need to wait for desc write back
> @@ -810,7 +786,7 @@ enum iavf_status iavf_asq_send_command(struct iavf_hw *hw,
> /* update the error if time out occurred */
> if ((!cmd_completed) &&
> (!details->async && !details->postpone)) {
> - if (rd32(hw, hw->aq.asq.len) & IAVF_VF_ATQLEN1_ATQCRIT_MASK) {
> + if (rd32(hw, IAVF_VF_ATQLEN1) & IAVF_VF_ATQLEN1_ATQCRIT_MASK) {
> iavf_debug(hw, IAVF_DEBUG_AQ_MESSAGE,
> "AQTX: AQ Critical error.\n");
> status = IAVF_ERR_ADMIN_QUEUE_CRITICAL_ERROR;
> @@ -878,7 +854,7 @@ enum iavf_status iavf_clean_arq_element(struct iavf_hw *hw,
> }
>
> /* set next_to_use to head */
> - ntu = rd32(hw, hw->aq.arq.head) & IAVF_VF_ARQH1_ARQH_MASK;
> + ntu = rd32(hw, IAVF_VF_ARQH1) & IAVF_VF_ARQH1_ARQH_MASK;
> if (ntu == ntc) {
> /* nothing to do - shouldn't need to update ring's values */
> ret_code = IAVF_ERR_ADMIN_QUEUE_NO_WORK;
> @@ -926,7 +902,7 @@ enum iavf_status iavf_clean_arq_element(struct iavf_hw *hw,
> desc->params.external.addr_low = cpu_to_le32(lower_32_bits(bi->pa));
>
> /* set tail = the last cleaned desc index. */
> - wr32(hw, hw->aq.arq.tail, ntc);
> + wr32(hw, IAVF_VF_ARQT1, ntc);
> /* ntc is updated to tail + 1 */
> ntc++;
> if (ntc == hw->aq.num_arq_entries)
> diff --git a/drivers/net/ethernet/intel/iavf/iavf_adminq.h b/drivers/net/ethernet/intel/iavf/iavf_adminq.h
> index 1f60518eb0e5..406506f64bdd 100644
> --- a/drivers/net/ethernet/intel/iavf/iavf_adminq.h
> +++ b/drivers/net/ethernet/intel/iavf/iavf_adminq.h
> @@ -29,13 +29,6 @@ struct iavf_adminq_ring {
> /* used for interrupt processing */
> u16 next_to_use;
> u16 next_to_clean;
> -
> - /* used for queue tracking */
> - u32 head;
> - u32 tail;
> - u32 len;
> - u32 bah;
> - u32 bal;
> };
>
> /* ASQ transaction details */
> diff --git a/drivers/net/ethernet/intel/iavf/iavf_common.c b/drivers/net/ethernet/intel/iavf/iavf_common.c
> index 8091e6feca01..89d2bce529ae 100644
> --- a/drivers/net/ethernet/intel/iavf/iavf_common.c
> +++ b/drivers/net/ethernet/intel/iavf/iavf_common.c
> @@ -279,11 +279,11 @@ void iavf_debug_aq(struct iavf_hw *hw, enum iavf_debug_mask mask, void *desc,
> **/
> bool iavf_check_asq_alive(struct iavf_hw *hw)
> {
> - if (hw->aq.asq.len)
> - return !!(rd32(hw, hw->aq.asq.len) &
> - IAVF_VF_ATQLEN1_ATQENABLE_MASK);
> - else
> + /* Check if the queue is initialized */
> + if (!hw->aq.asq.count)
> return false;
> +
> + return !!(rd32(hw, IAVF_VF_ATQLEN1) & IAVF_VF_ATQLEN1_ATQENABLE_MASK);
> }
>
> /**
> diff --git a/drivers/net/ethernet/intel/iavf/iavf_main.c b/drivers/net/ethernet/intel/iavf/iavf_main.c
> index 6e27b7938b8a..146755498feb 100644
> --- a/drivers/net/ethernet/intel/iavf/iavf_main.c
> +++ b/drivers/net/ethernet/intel/iavf/iavf_main.c
> @@ -3253,7 +3253,7 @@ static void iavf_adminq_task(struct work_struct *work)
> goto freedom;
>
> /* check for error indications */
> - val = rd32(hw, hw->aq.arq.len);
> + val = rd32(hw, IAVF_VF_ARQLEN1);
> if (val == 0xdeadbeef || val == 0xffffffff) /* device in reset */
> goto freedom;
> oldval = val;
> @@ -3270,9 +3270,9 @@ static void iavf_adminq_task(struct work_struct *work)
> val &= ~IAVF_VF_ARQLEN1_ARQCRIT_MASK;
> }
> if (oldval != val)
> - wr32(hw, hw->aq.arq.len, val);
> + wr32(hw, IAVF_VF_ARQLEN1, val);
>
> - val = rd32(hw, hw->aq.asq.len);
> + val = rd32(hw, IAVF_VF_ATQLEN1);
> oldval = val;
> if (val & IAVF_VF_ATQLEN1_ATQVFE_MASK) {
> dev_info(&adapter->pdev->dev, "ASQ VF Error detected\n");
> @@ -3287,7 +3287,7 @@ static void iavf_adminq_task(struct work_struct *work)
> val &= ~IAVF_VF_ATQLEN1_ATQCRIT_MASK;
> }
> if (oldval != val)
> - wr32(hw, hw->aq.asq.len, val);
> + wr32(hw, IAVF_VF_ATQLEN1, val);
>
> freedom:
> kfree(event.msg_buf);
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: [Intel-wired-lan] [PATCH iwl-next] iavf: Remove queue tracking fields from iavf_adminq_ring
@ 2023-10-26 9:10 ` Przemek Kitszel
0 siblings, 0 replies; 10+ messages in thread
From: Przemek Kitszel @ 2023-10-26 9:10 UTC (permalink / raw)
To: Ivan Vecera, netdev
Cc: Wojciech Drewek, intel-wired-lan, Jesse Brandeburg, linux-kernel,
Eric Dumazet, Tony Nguyen, Jacob Keller, Jakub Kicinski,
Paolo Abeni, David S. Miller
On 10/26/23 10:39, Ivan Vecera wrote:
> Fields 'head', 'tail', 'len', 'bah' and 'bal' in iavf_adminq_ring
> are used to store register offsets. These offsets are initialized
> and remains constant so there is no need to store them in the
> iavf_adminq_ring structure.
>
> Remove these fields from iavf_adminq_ring and use register offset
> constants instead. Remove iavf_adminq_init_regs() that originally
> stores these constants into these fields.
>
> Finally improve iavf_check_asq_alive() that assumes that
> non-zero value of hw->aq.asq.len indicates fully initialized
> AdminQ send queue. Replace it by check for non-zero value
> of field hw->aq.asq.count that is non-zero when the sending
> queue is initialized and is zeroed during shutdown of
> the queue.
That part could be a separate commit, perhaps even for -net
>
> Signed-off-by: Ivan Vecera <ivecera@redhat.com>
> ---
> drivers/net/ethernet/intel/iavf/iavf_adminq.c | 86 +++++++------------
> drivers/net/ethernet/intel/iavf/iavf_adminq.h | 7 --
> drivers/net/ethernet/intel/iavf/iavf_common.c | 8 +-
> drivers/net/ethernet/intel/iavf/iavf_main.c | 8 +-
> 4 files changed, 39 insertions(+), 70 deletions(-)
anyway, this is fine, so
Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@intel.com>
>
> diff --git a/drivers/net/ethernet/intel/iavf/iavf_adminq.c b/drivers/net/ethernet/intel/iavf/iavf_adminq.c
> index 9ffbd24d83cb..82fcd18ad660 100644
> --- a/drivers/net/ethernet/intel/iavf/iavf_adminq.c
> +++ b/drivers/net/ethernet/intel/iavf/iavf_adminq.c
> @@ -7,27 +7,6 @@
> #include "iavf_adminq.h"
> #include "iavf_prototype.h"
>
> -/**
> - * iavf_adminq_init_regs - Initialize AdminQ registers
> - * @hw: pointer to the hardware structure
> - *
> - * This assumes the alloc_asq and alloc_arq functions have already been called
> - **/
> -static void iavf_adminq_init_regs(struct iavf_hw *hw)
> -{
> - /* set head and tail registers in our local struct */
> - hw->aq.asq.tail = IAVF_VF_ATQT1;
> - hw->aq.asq.head = IAVF_VF_ATQH1;
> - hw->aq.asq.len = IAVF_VF_ATQLEN1;
> - hw->aq.asq.bal = IAVF_VF_ATQBAL1;
> - hw->aq.asq.bah = IAVF_VF_ATQBAH1;
> - hw->aq.arq.tail = IAVF_VF_ARQT1;
> - hw->aq.arq.head = IAVF_VF_ARQH1;
> - hw->aq.arq.len = IAVF_VF_ARQLEN1;
> - hw->aq.arq.bal = IAVF_VF_ARQBAL1;
> - hw->aq.arq.bah = IAVF_VF_ARQBAH1;
> -}
> -
> /**
> * iavf_alloc_adminq_asq_ring - Allocate Admin Queue send rings
> * @hw: pointer to the hardware structure
> @@ -259,17 +238,17 @@ static enum iavf_status iavf_config_asq_regs(struct iavf_hw *hw)
> u32 reg = 0;
>
> /* Clear Head and Tail */
> - wr32(hw, hw->aq.asq.head, 0);
> - wr32(hw, hw->aq.asq.tail, 0);
> + wr32(hw, IAVF_VF_ATQH1, 0);
> + wr32(hw, IAVF_VF_ATQT1, 0);
>
> /* set starting point */
> - wr32(hw, hw->aq.asq.len, (hw->aq.num_asq_entries |
> + wr32(hw, IAVF_VF_ATQLEN1, (hw->aq.num_asq_entries |
> IAVF_VF_ATQLEN1_ATQENABLE_MASK));
> - wr32(hw, hw->aq.asq.bal, lower_32_bits(hw->aq.asq.desc_buf.pa));
> - wr32(hw, hw->aq.asq.bah, upper_32_bits(hw->aq.asq.desc_buf.pa));
> + wr32(hw, IAVF_VF_ATQBAL1, lower_32_bits(hw->aq.asq.desc_buf.pa));
> + wr32(hw, IAVF_VF_ATQBAH1, upper_32_bits(hw->aq.asq.desc_buf.pa));
>
> /* Check one register to verify that config was applied */
> - reg = rd32(hw, hw->aq.asq.bal);
> + reg = rd32(hw, IAVF_VF_ATQBAL1);
> if (reg != lower_32_bits(hw->aq.asq.desc_buf.pa))
> ret_code = IAVF_ERR_ADMIN_QUEUE_ERROR;
>
> @@ -288,20 +267,20 @@ static enum iavf_status iavf_config_arq_regs(struct iavf_hw *hw)
> u32 reg = 0;
>
> /* Clear Head and Tail */
> - wr32(hw, hw->aq.arq.head, 0);
> - wr32(hw, hw->aq.arq.tail, 0);
> + wr32(hw, IAVF_VF_ARQH1, 0);
> + wr32(hw, IAVF_VF_ARQT1, 0);
>
> /* set starting point */
> - wr32(hw, hw->aq.arq.len, (hw->aq.num_arq_entries |
> + wr32(hw, IAVF_VF_ARQLEN1, (hw->aq.num_arq_entries |
> IAVF_VF_ARQLEN1_ARQENABLE_MASK));
> - wr32(hw, hw->aq.arq.bal, lower_32_bits(hw->aq.arq.desc_buf.pa));
> - wr32(hw, hw->aq.arq.bah, upper_32_bits(hw->aq.arq.desc_buf.pa));
> + wr32(hw, IAVF_VF_ARQBAL1, lower_32_bits(hw->aq.arq.desc_buf.pa));
> + wr32(hw, IAVF_VF_ARQBAH1, upper_32_bits(hw->aq.arq.desc_buf.pa));
>
> /* Update tail in the HW to post pre-allocated buffers */
> - wr32(hw, hw->aq.arq.tail, hw->aq.num_arq_entries - 1);
> + wr32(hw, IAVF_VF_ARQT1, hw->aq.num_arq_entries - 1);
>
> /* Check one register to verify that config was applied */
> - reg = rd32(hw, hw->aq.arq.bal);
> + reg = rd32(hw, IAVF_VF_ARQBAL1);
> if (reg != lower_32_bits(hw->aq.arq.desc_buf.pa))
> ret_code = IAVF_ERR_ADMIN_QUEUE_ERROR;
>
> @@ -455,11 +434,11 @@ static enum iavf_status iavf_shutdown_asq(struct iavf_hw *hw)
> }
>
> /* Stop firmware AdminQ processing */
> - wr32(hw, hw->aq.asq.head, 0);
> - wr32(hw, hw->aq.asq.tail, 0);
> - wr32(hw, hw->aq.asq.len, 0);
> - wr32(hw, hw->aq.asq.bal, 0);
> - wr32(hw, hw->aq.asq.bah, 0);
> + wr32(hw, IAVF_VF_ATQH1, 0);
> + wr32(hw, IAVF_VF_ATQT1, 0);
> + wr32(hw, IAVF_VF_ATQLEN1, 0);
> + wr32(hw, IAVF_VF_ATQBAL1, 0);
> + wr32(hw, IAVF_VF_ATQBAH1, 0);
>
> hw->aq.asq.count = 0; /* to indicate uninitialized queue */
>
> @@ -489,11 +468,11 @@ static enum iavf_status iavf_shutdown_arq(struct iavf_hw *hw)
> }
>
> /* Stop firmware AdminQ processing */
> - wr32(hw, hw->aq.arq.head, 0);
> - wr32(hw, hw->aq.arq.tail, 0);
> - wr32(hw, hw->aq.arq.len, 0);
> - wr32(hw, hw->aq.arq.bal, 0);
> - wr32(hw, hw->aq.arq.bah, 0);
> + wr32(hw, IAVF_VF_ARQH1, 0);
> + wr32(hw, IAVF_VF_ARQT1, 0);
> + wr32(hw, IAVF_VF_ARQLEN1, 0);
> + wr32(hw, IAVF_VF_ARQBAL1, 0);
> + wr32(hw, IAVF_VF_ARQBAH1, 0);
>
> hw->aq.arq.count = 0; /* to indicate uninitialized queue */
>
> @@ -529,9 +508,6 @@ enum iavf_status iavf_init_adminq(struct iavf_hw *hw)
> goto init_adminq_exit;
> }
>
> - /* Set up register offsets */
> - iavf_adminq_init_regs(hw);
> -
> /* setup ASQ command write back timeout */
> hw->aq.asq_cmd_timeout = IAVF_ASQ_CMD_TIMEOUT;
>
> @@ -587,9 +563,9 @@ static u16 iavf_clean_asq(struct iavf_hw *hw)
>
> desc = IAVF_ADMINQ_DESC(*asq, ntc);
> details = IAVF_ADMINQ_DETAILS(*asq, ntc);
> - while (rd32(hw, hw->aq.asq.head) != ntc) {
> + while (rd32(hw, IAVF_VF_ATQH1) != ntc) {
> iavf_debug(hw, IAVF_DEBUG_AQ_MESSAGE,
> - "ntc %d head %d.\n", ntc, rd32(hw, hw->aq.asq.head));
> + "ntc %d head %d.\n", ntc, rd32(hw, IAVF_VF_ATQH1));
>
> if (details->callback) {
> IAVF_ADMINQ_CALLBACK cb_func =
> @@ -624,7 +600,7 @@ bool iavf_asq_done(struct iavf_hw *hw)
> /* AQ designers suggest use of head for better
> * timing reliability than DD bit
> */
> - return rd32(hw, hw->aq.asq.head) == hw->aq.asq.next_to_use;
> + return rd32(hw, IAVF_VF_ATQH1) == hw->aq.asq.next_to_use;
> }
>
> /**
> @@ -663,7 +639,7 @@ enum iavf_status iavf_asq_send_command(struct iavf_hw *hw,
>
> hw->aq.asq_last_status = IAVF_AQ_RC_OK;
>
> - val = rd32(hw, hw->aq.asq.head);
> + val = rd32(hw, IAVF_VF_ATQH1);
> if (val >= hw->aq.num_asq_entries) {
> iavf_debug(hw, IAVF_DEBUG_AQ_MESSAGE,
> "AQTX: head overrun at %d\n", val);
> @@ -755,7 +731,7 @@ enum iavf_status iavf_asq_send_command(struct iavf_hw *hw,
> if (hw->aq.asq.next_to_use == hw->aq.asq.count)
> hw->aq.asq.next_to_use = 0;
> if (!details->postpone)
> - wr32(hw, hw->aq.asq.tail, hw->aq.asq.next_to_use);
> + wr32(hw, IAVF_VF_ATQT1, hw->aq.asq.next_to_use);
>
> /* if cmd_details are not defined or async flag is not set,
> * we need to wait for desc write back
> @@ -810,7 +786,7 @@ enum iavf_status iavf_asq_send_command(struct iavf_hw *hw,
> /* update the error if time out occurred */
> if ((!cmd_completed) &&
> (!details->async && !details->postpone)) {
> - if (rd32(hw, hw->aq.asq.len) & IAVF_VF_ATQLEN1_ATQCRIT_MASK) {
> + if (rd32(hw, IAVF_VF_ATQLEN1) & IAVF_VF_ATQLEN1_ATQCRIT_MASK) {
> iavf_debug(hw, IAVF_DEBUG_AQ_MESSAGE,
> "AQTX: AQ Critical error.\n");
> status = IAVF_ERR_ADMIN_QUEUE_CRITICAL_ERROR;
> @@ -878,7 +854,7 @@ enum iavf_status iavf_clean_arq_element(struct iavf_hw *hw,
> }
>
> /* set next_to_use to head */
> - ntu = rd32(hw, hw->aq.arq.head) & IAVF_VF_ARQH1_ARQH_MASK;
> + ntu = rd32(hw, IAVF_VF_ARQH1) & IAVF_VF_ARQH1_ARQH_MASK;
> if (ntu == ntc) {
> /* nothing to do - shouldn't need to update ring's values */
> ret_code = IAVF_ERR_ADMIN_QUEUE_NO_WORK;
> @@ -926,7 +902,7 @@ enum iavf_status iavf_clean_arq_element(struct iavf_hw *hw,
> desc->params.external.addr_low = cpu_to_le32(lower_32_bits(bi->pa));
>
> /* set tail = the last cleaned desc index. */
> - wr32(hw, hw->aq.arq.tail, ntc);
> + wr32(hw, IAVF_VF_ARQT1, ntc);
> /* ntc is updated to tail + 1 */
> ntc++;
> if (ntc == hw->aq.num_arq_entries)
> diff --git a/drivers/net/ethernet/intel/iavf/iavf_adminq.h b/drivers/net/ethernet/intel/iavf/iavf_adminq.h
> index 1f60518eb0e5..406506f64bdd 100644
> --- a/drivers/net/ethernet/intel/iavf/iavf_adminq.h
> +++ b/drivers/net/ethernet/intel/iavf/iavf_adminq.h
> @@ -29,13 +29,6 @@ struct iavf_adminq_ring {
> /* used for interrupt processing */
> u16 next_to_use;
> u16 next_to_clean;
> -
> - /* used for queue tracking */
> - u32 head;
> - u32 tail;
> - u32 len;
> - u32 bah;
> - u32 bal;
> };
>
> /* ASQ transaction details */
> diff --git a/drivers/net/ethernet/intel/iavf/iavf_common.c b/drivers/net/ethernet/intel/iavf/iavf_common.c
> index 8091e6feca01..89d2bce529ae 100644
> --- a/drivers/net/ethernet/intel/iavf/iavf_common.c
> +++ b/drivers/net/ethernet/intel/iavf/iavf_common.c
> @@ -279,11 +279,11 @@ void iavf_debug_aq(struct iavf_hw *hw, enum iavf_debug_mask mask, void *desc,
> **/
> bool iavf_check_asq_alive(struct iavf_hw *hw)
> {
> - if (hw->aq.asq.len)
> - return !!(rd32(hw, hw->aq.asq.len) &
> - IAVF_VF_ATQLEN1_ATQENABLE_MASK);
> - else
> + /* Check if the queue is initialized */
> + if (!hw->aq.asq.count)
> return false;
> +
> + return !!(rd32(hw, IAVF_VF_ATQLEN1) & IAVF_VF_ATQLEN1_ATQENABLE_MASK);
> }
>
> /**
> diff --git a/drivers/net/ethernet/intel/iavf/iavf_main.c b/drivers/net/ethernet/intel/iavf/iavf_main.c
> index 6e27b7938b8a..146755498feb 100644
> --- a/drivers/net/ethernet/intel/iavf/iavf_main.c
> +++ b/drivers/net/ethernet/intel/iavf/iavf_main.c
> @@ -3253,7 +3253,7 @@ static void iavf_adminq_task(struct work_struct *work)
> goto freedom;
>
> /* check for error indications */
> - val = rd32(hw, hw->aq.arq.len);
> + val = rd32(hw, IAVF_VF_ARQLEN1);
> if (val == 0xdeadbeef || val == 0xffffffff) /* device in reset */
> goto freedom;
> oldval = val;
> @@ -3270,9 +3270,9 @@ static void iavf_adminq_task(struct work_struct *work)
> val &= ~IAVF_VF_ARQLEN1_ARQCRIT_MASK;
> }
> if (oldval != val)
> - wr32(hw, hw->aq.arq.len, val);
> + wr32(hw, IAVF_VF_ARQLEN1, val);
>
> - val = rd32(hw, hw->aq.asq.len);
> + val = rd32(hw, IAVF_VF_ATQLEN1);
> oldval = val;
> if (val & IAVF_VF_ATQLEN1_ATQVFE_MASK) {
> dev_info(&adapter->pdev->dev, "ASQ VF Error detected\n");
> @@ -3287,7 +3287,7 @@ static void iavf_adminq_task(struct work_struct *work)
> val &= ~IAVF_VF_ATQLEN1_ATQCRIT_MASK;
> }
> if (oldval != val)
> - wr32(hw, hw->aq.asq.len, val);
> + wr32(hw, IAVF_VF_ATQLEN1, val);
>
> freedom:
> kfree(event.msg_buf);
_______________________________________________
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^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: [PATCH iwl-next] iavf: Remove queue tracking fields from iavf_adminq_ring
2023-10-26 8:39 ` Ivan Vecera
@ 2023-10-26 9:47 ` Wojciech Drewek
-1 siblings, 0 replies; 10+ messages in thread
From: Wojciech Drewek @ 2023-10-26 9:47 UTC (permalink / raw)
To: Ivan Vecera, netdev
Cc: Jesse Brandeburg, Tony Nguyen, David S. Miller, Eric Dumazet,
Jakub Kicinski, Paolo Abeni, intel-wired-lan, linux-kernel,
Jacob Keller
On 26.10.2023 10:39, Ivan Vecera wrote:
> Fields 'head', 'tail', 'len', 'bah' and 'bal' in iavf_adminq_ring
> are used to store register offsets. These offsets are initialized
> and remains constant so there is no need to store them in the
> iavf_adminq_ring structure.
>
> Remove these fields from iavf_adminq_ring and use register offset
> constants instead. Remove iavf_adminq_init_regs() that originally
> stores these constants into these fields.
>
> Finally improve iavf_check_asq_alive() that assumes that
> non-zero value of hw->aq.asq.len indicates fully initialized
> AdminQ send queue. Replace it by check for non-zero value
> of field hw->aq.asq.count that is non-zero when the sending
> queue is initialized and is zeroed during shutdown of
> the queue.
>
> Signed-off-by: Ivan Vecera <ivecera@redhat.com>
> ---
Reviewed-by: Wojciech Drewek <wojciech.drewek@intel.com>
> drivers/net/ethernet/intel/iavf/iavf_adminq.c | 86 +++++++------------
> drivers/net/ethernet/intel/iavf/iavf_adminq.h | 7 --
> drivers/net/ethernet/intel/iavf/iavf_common.c | 8 +-
> drivers/net/ethernet/intel/iavf/iavf_main.c | 8 +-
> 4 files changed, 39 insertions(+), 70 deletions(-)
>
> diff --git a/drivers/net/ethernet/intel/iavf/iavf_adminq.c b/drivers/net/ethernet/intel/iavf/iavf_adminq.c
> index 9ffbd24d83cb..82fcd18ad660 100644
> --- a/drivers/net/ethernet/intel/iavf/iavf_adminq.c
> +++ b/drivers/net/ethernet/intel/iavf/iavf_adminq.c
> @@ -7,27 +7,6 @@
> #include "iavf_adminq.h"
> #include "iavf_prototype.h"
>
> -/**
> - * iavf_adminq_init_regs - Initialize AdminQ registers
> - * @hw: pointer to the hardware structure
> - *
> - * This assumes the alloc_asq and alloc_arq functions have already been called
> - **/
> -static void iavf_adminq_init_regs(struct iavf_hw *hw)
> -{
> - /* set head and tail registers in our local struct */
> - hw->aq.asq.tail = IAVF_VF_ATQT1;
> - hw->aq.asq.head = IAVF_VF_ATQH1;
> - hw->aq.asq.len = IAVF_VF_ATQLEN1;
> - hw->aq.asq.bal = IAVF_VF_ATQBAL1;
> - hw->aq.asq.bah = IAVF_VF_ATQBAH1;
> - hw->aq.arq.tail = IAVF_VF_ARQT1;
> - hw->aq.arq.head = IAVF_VF_ARQH1;
> - hw->aq.arq.len = IAVF_VF_ARQLEN1;
> - hw->aq.arq.bal = IAVF_VF_ARQBAL1;
> - hw->aq.arq.bah = IAVF_VF_ARQBAH1;
> -}
> -
> /**
> * iavf_alloc_adminq_asq_ring - Allocate Admin Queue send rings
> * @hw: pointer to the hardware structure
> @@ -259,17 +238,17 @@ static enum iavf_status iavf_config_asq_regs(struct iavf_hw *hw)
> u32 reg = 0;
>
> /* Clear Head and Tail */
> - wr32(hw, hw->aq.asq.head, 0);
> - wr32(hw, hw->aq.asq.tail, 0);
> + wr32(hw, IAVF_VF_ATQH1, 0);
> + wr32(hw, IAVF_VF_ATQT1, 0);
>
> /* set starting point */
> - wr32(hw, hw->aq.asq.len, (hw->aq.num_asq_entries |
> + wr32(hw, IAVF_VF_ATQLEN1, (hw->aq.num_asq_entries |
> IAVF_VF_ATQLEN1_ATQENABLE_MASK));
> - wr32(hw, hw->aq.asq.bal, lower_32_bits(hw->aq.asq.desc_buf.pa));
> - wr32(hw, hw->aq.asq.bah, upper_32_bits(hw->aq.asq.desc_buf.pa));
> + wr32(hw, IAVF_VF_ATQBAL1, lower_32_bits(hw->aq.asq.desc_buf.pa));
> + wr32(hw, IAVF_VF_ATQBAH1, upper_32_bits(hw->aq.asq.desc_buf.pa));
>
> /* Check one register to verify that config was applied */
> - reg = rd32(hw, hw->aq.asq.bal);
> + reg = rd32(hw, IAVF_VF_ATQBAL1);
> if (reg != lower_32_bits(hw->aq.asq.desc_buf.pa))
> ret_code = IAVF_ERR_ADMIN_QUEUE_ERROR;
>
> @@ -288,20 +267,20 @@ static enum iavf_status iavf_config_arq_regs(struct iavf_hw *hw)
> u32 reg = 0;
>
> /* Clear Head and Tail */
> - wr32(hw, hw->aq.arq.head, 0);
> - wr32(hw, hw->aq.arq.tail, 0);
> + wr32(hw, IAVF_VF_ARQH1, 0);
> + wr32(hw, IAVF_VF_ARQT1, 0);
>
> /* set starting point */
> - wr32(hw, hw->aq.arq.len, (hw->aq.num_arq_entries |
> + wr32(hw, IAVF_VF_ARQLEN1, (hw->aq.num_arq_entries |
> IAVF_VF_ARQLEN1_ARQENABLE_MASK));
> - wr32(hw, hw->aq.arq.bal, lower_32_bits(hw->aq.arq.desc_buf.pa));
> - wr32(hw, hw->aq.arq.bah, upper_32_bits(hw->aq.arq.desc_buf.pa));
> + wr32(hw, IAVF_VF_ARQBAL1, lower_32_bits(hw->aq.arq.desc_buf.pa));
> + wr32(hw, IAVF_VF_ARQBAH1, upper_32_bits(hw->aq.arq.desc_buf.pa));
>
> /* Update tail in the HW to post pre-allocated buffers */
> - wr32(hw, hw->aq.arq.tail, hw->aq.num_arq_entries - 1);
> + wr32(hw, IAVF_VF_ARQT1, hw->aq.num_arq_entries - 1);
>
> /* Check one register to verify that config was applied */
> - reg = rd32(hw, hw->aq.arq.bal);
> + reg = rd32(hw, IAVF_VF_ARQBAL1);
> if (reg != lower_32_bits(hw->aq.arq.desc_buf.pa))
> ret_code = IAVF_ERR_ADMIN_QUEUE_ERROR;
>
> @@ -455,11 +434,11 @@ static enum iavf_status iavf_shutdown_asq(struct iavf_hw *hw)
> }
>
> /* Stop firmware AdminQ processing */
> - wr32(hw, hw->aq.asq.head, 0);
> - wr32(hw, hw->aq.asq.tail, 0);
> - wr32(hw, hw->aq.asq.len, 0);
> - wr32(hw, hw->aq.asq.bal, 0);
> - wr32(hw, hw->aq.asq.bah, 0);
> + wr32(hw, IAVF_VF_ATQH1, 0);
> + wr32(hw, IAVF_VF_ATQT1, 0);
> + wr32(hw, IAVF_VF_ATQLEN1, 0);
> + wr32(hw, IAVF_VF_ATQBAL1, 0);
> + wr32(hw, IAVF_VF_ATQBAH1, 0);
>
> hw->aq.asq.count = 0; /* to indicate uninitialized queue */
>
> @@ -489,11 +468,11 @@ static enum iavf_status iavf_shutdown_arq(struct iavf_hw *hw)
> }
>
> /* Stop firmware AdminQ processing */
> - wr32(hw, hw->aq.arq.head, 0);
> - wr32(hw, hw->aq.arq.tail, 0);
> - wr32(hw, hw->aq.arq.len, 0);
> - wr32(hw, hw->aq.arq.bal, 0);
> - wr32(hw, hw->aq.arq.bah, 0);
> + wr32(hw, IAVF_VF_ARQH1, 0);
> + wr32(hw, IAVF_VF_ARQT1, 0);
> + wr32(hw, IAVF_VF_ARQLEN1, 0);
> + wr32(hw, IAVF_VF_ARQBAL1, 0);
> + wr32(hw, IAVF_VF_ARQBAH1, 0);
>
> hw->aq.arq.count = 0; /* to indicate uninitialized queue */
>
> @@ -529,9 +508,6 @@ enum iavf_status iavf_init_adminq(struct iavf_hw *hw)
> goto init_adminq_exit;
> }
>
> - /* Set up register offsets */
> - iavf_adminq_init_regs(hw);
> -
> /* setup ASQ command write back timeout */
> hw->aq.asq_cmd_timeout = IAVF_ASQ_CMD_TIMEOUT;
>
> @@ -587,9 +563,9 @@ static u16 iavf_clean_asq(struct iavf_hw *hw)
>
> desc = IAVF_ADMINQ_DESC(*asq, ntc);
> details = IAVF_ADMINQ_DETAILS(*asq, ntc);
> - while (rd32(hw, hw->aq.asq.head) != ntc) {
> + while (rd32(hw, IAVF_VF_ATQH1) != ntc) {
> iavf_debug(hw, IAVF_DEBUG_AQ_MESSAGE,
> - "ntc %d head %d.\n", ntc, rd32(hw, hw->aq.asq.head));
> + "ntc %d head %d.\n", ntc, rd32(hw, IAVF_VF_ATQH1));
>
> if (details->callback) {
> IAVF_ADMINQ_CALLBACK cb_func =
> @@ -624,7 +600,7 @@ bool iavf_asq_done(struct iavf_hw *hw)
> /* AQ designers suggest use of head for better
> * timing reliability than DD bit
> */
> - return rd32(hw, hw->aq.asq.head) == hw->aq.asq.next_to_use;
> + return rd32(hw, IAVF_VF_ATQH1) == hw->aq.asq.next_to_use;
> }
>
> /**
> @@ -663,7 +639,7 @@ enum iavf_status iavf_asq_send_command(struct iavf_hw *hw,
>
> hw->aq.asq_last_status = IAVF_AQ_RC_OK;
>
> - val = rd32(hw, hw->aq.asq.head);
> + val = rd32(hw, IAVF_VF_ATQH1);
> if (val >= hw->aq.num_asq_entries) {
> iavf_debug(hw, IAVF_DEBUG_AQ_MESSAGE,
> "AQTX: head overrun at %d\n", val);
> @@ -755,7 +731,7 @@ enum iavf_status iavf_asq_send_command(struct iavf_hw *hw,
> if (hw->aq.asq.next_to_use == hw->aq.asq.count)
> hw->aq.asq.next_to_use = 0;
> if (!details->postpone)
> - wr32(hw, hw->aq.asq.tail, hw->aq.asq.next_to_use);
> + wr32(hw, IAVF_VF_ATQT1, hw->aq.asq.next_to_use);
>
> /* if cmd_details are not defined or async flag is not set,
> * we need to wait for desc write back
> @@ -810,7 +786,7 @@ enum iavf_status iavf_asq_send_command(struct iavf_hw *hw,
> /* update the error if time out occurred */
> if ((!cmd_completed) &&
> (!details->async && !details->postpone)) {
> - if (rd32(hw, hw->aq.asq.len) & IAVF_VF_ATQLEN1_ATQCRIT_MASK) {
> + if (rd32(hw, IAVF_VF_ATQLEN1) & IAVF_VF_ATQLEN1_ATQCRIT_MASK) {
> iavf_debug(hw, IAVF_DEBUG_AQ_MESSAGE,
> "AQTX: AQ Critical error.\n");
> status = IAVF_ERR_ADMIN_QUEUE_CRITICAL_ERROR;
> @@ -878,7 +854,7 @@ enum iavf_status iavf_clean_arq_element(struct iavf_hw *hw,
> }
>
> /* set next_to_use to head */
> - ntu = rd32(hw, hw->aq.arq.head) & IAVF_VF_ARQH1_ARQH_MASK;
> + ntu = rd32(hw, IAVF_VF_ARQH1) & IAVF_VF_ARQH1_ARQH_MASK;
> if (ntu == ntc) {
> /* nothing to do - shouldn't need to update ring's values */
> ret_code = IAVF_ERR_ADMIN_QUEUE_NO_WORK;
> @@ -926,7 +902,7 @@ enum iavf_status iavf_clean_arq_element(struct iavf_hw *hw,
> desc->params.external.addr_low = cpu_to_le32(lower_32_bits(bi->pa));
>
> /* set tail = the last cleaned desc index. */
> - wr32(hw, hw->aq.arq.tail, ntc);
> + wr32(hw, IAVF_VF_ARQT1, ntc);
> /* ntc is updated to tail + 1 */
> ntc++;
> if (ntc == hw->aq.num_arq_entries)
> diff --git a/drivers/net/ethernet/intel/iavf/iavf_adminq.h b/drivers/net/ethernet/intel/iavf/iavf_adminq.h
> index 1f60518eb0e5..406506f64bdd 100644
> --- a/drivers/net/ethernet/intel/iavf/iavf_adminq.h
> +++ b/drivers/net/ethernet/intel/iavf/iavf_adminq.h
> @@ -29,13 +29,6 @@ struct iavf_adminq_ring {
> /* used for interrupt processing */
> u16 next_to_use;
> u16 next_to_clean;
> -
> - /* used for queue tracking */
> - u32 head;
> - u32 tail;
> - u32 len;
> - u32 bah;
> - u32 bal;
> };
>
> /* ASQ transaction details */
> diff --git a/drivers/net/ethernet/intel/iavf/iavf_common.c b/drivers/net/ethernet/intel/iavf/iavf_common.c
> index 8091e6feca01..89d2bce529ae 100644
> --- a/drivers/net/ethernet/intel/iavf/iavf_common.c
> +++ b/drivers/net/ethernet/intel/iavf/iavf_common.c
> @@ -279,11 +279,11 @@ void iavf_debug_aq(struct iavf_hw *hw, enum iavf_debug_mask mask, void *desc,
> **/
> bool iavf_check_asq_alive(struct iavf_hw *hw)
> {
> - if (hw->aq.asq.len)
> - return !!(rd32(hw, hw->aq.asq.len) &
> - IAVF_VF_ATQLEN1_ATQENABLE_MASK);
> - else
> + /* Check if the queue is initialized */
> + if (!hw->aq.asq.count)
> return false;
> +
> + return !!(rd32(hw, IAVF_VF_ATQLEN1) & IAVF_VF_ATQLEN1_ATQENABLE_MASK);
> }
>
> /**
> diff --git a/drivers/net/ethernet/intel/iavf/iavf_main.c b/drivers/net/ethernet/intel/iavf/iavf_main.c
> index 6e27b7938b8a..146755498feb 100644
> --- a/drivers/net/ethernet/intel/iavf/iavf_main.c
> +++ b/drivers/net/ethernet/intel/iavf/iavf_main.c
> @@ -3253,7 +3253,7 @@ static void iavf_adminq_task(struct work_struct *work)
> goto freedom;
>
> /* check for error indications */
> - val = rd32(hw, hw->aq.arq.len);
> + val = rd32(hw, IAVF_VF_ARQLEN1);
> if (val == 0xdeadbeef || val == 0xffffffff) /* device in reset */
> goto freedom;
> oldval = val;
> @@ -3270,9 +3270,9 @@ static void iavf_adminq_task(struct work_struct *work)
> val &= ~IAVF_VF_ARQLEN1_ARQCRIT_MASK;
> }
> if (oldval != val)
> - wr32(hw, hw->aq.arq.len, val);
> + wr32(hw, IAVF_VF_ARQLEN1, val);
>
> - val = rd32(hw, hw->aq.asq.len);
> + val = rd32(hw, IAVF_VF_ATQLEN1);
> oldval = val;
> if (val & IAVF_VF_ATQLEN1_ATQVFE_MASK) {
> dev_info(&adapter->pdev->dev, "ASQ VF Error detected\n");
> @@ -3287,7 +3287,7 @@ static void iavf_adminq_task(struct work_struct *work)
> val &= ~IAVF_VF_ATQLEN1_ATQCRIT_MASK;
> }
> if (oldval != val)
> - wr32(hw, hw->aq.asq.len, val);
> + wr32(hw, IAVF_VF_ATQLEN1, val);
>
> freedom:
> kfree(event.msg_buf);
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: [Intel-wired-lan] [PATCH iwl-next] iavf: Remove queue tracking fields from iavf_adminq_ring
@ 2023-10-26 9:47 ` Wojciech Drewek
0 siblings, 0 replies; 10+ messages in thread
From: Wojciech Drewek @ 2023-10-26 9:47 UTC (permalink / raw)
To: Ivan Vecera, netdev
Cc: intel-wired-lan, Jesse Brandeburg, linux-kernel, Eric Dumazet,
Tony Nguyen, Jacob Keller, Jakub Kicinski, Paolo Abeni,
David S. Miller
On 26.10.2023 10:39, Ivan Vecera wrote:
> Fields 'head', 'tail', 'len', 'bah' and 'bal' in iavf_adminq_ring
> are used to store register offsets. These offsets are initialized
> and remains constant so there is no need to store them in the
> iavf_adminq_ring structure.
>
> Remove these fields from iavf_adminq_ring and use register offset
> constants instead. Remove iavf_adminq_init_regs() that originally
> stores these constants into these fields.
>
> Finally improve iavf_check_asq_alive() that assumes that
> non-zero value of hw->aq.asq.len indicates fully initialized
> AdminQ send queue. Replace it by check for non-zero value
> of field hw->aq.asq.count that is non-zero when the sending
> queue is initialized and is zeroed during shutdown of
> the queue.
>
> Signed-off-by: Ivan Vecera <ivecera@redhat.com>
> ---
Reviewed-by: Wojciech Drewek <wojciech.drewek@intel.com>
> drivers/net/ethernet/intel/iavf/iavf_adminq.c | 86 +++++++------------
> drivers/net/ethernet/intel/iavf/iavf_adminq.h | 7 --
> drivers/net/ethernet/intel/iavf/iavf_common.c | 8 +-
> drivers/net/ethernet/intel/iavf/iavf_main.c | 8 +-
> 4 files changed, 39 insertions(+), 70 deletions(-)
>
> diff --git a/drivers/net/ethernet/intel/iavf/iavf_adminq.c b/drivers/net/ethernet/intel/iavf/iavf_adminq.c
> index 9ffbd24d83cb..82fcd18ad660 100644
> --- a/drivers/net/ethernet/intel/iavf/iavf_adminq.c
> +++ b/drivers/net/ethernet/intel/iavf/iavf_adminq.c
> @@ -7,27 +7,6 @@
> #include "iavf_adminq.h"
> #include "iavf_prototype.h"
>
> -/**
> - * iavf_adminq_init_regs - Initialize AdminQ registers
> - * @hw: pointer to the hardware structure
> - *
> - * This assumes the alloc_asq and alloc_arq functions have already been called
> - **/
> -static void iavf_adminq_init_regs(struct iavf_hw *hw)
> -{
> - /* set head and tail registers in our local struct */
> - hw->aq.asq.tail = IAVF_VF_ATQT1;
> - hw->aq.asq.head = IAVF_VF_ATQH1;
> - hw->aq.asq.len = IAVF_VF_ATQLEN1;
> - hw->aq.asq.bal = IAVF_VF_ATQBAL1;
> - hw->aq.asq.bah = IAVF_VF_ATQBAH1;
> - hw->aq.arq.tail = IAVF_VF_ARQT1;
> - hw->aq.arq.head = IAVF_VF_ARQH1;
> - hw->aq.arq.len = IAVF_VF_ARQLEN1;
> - hw->aq.arq.bal = IAVF_VF_ARQBAL1;
> - hw->aq.arq.bah = IAVF_VF_ARQBAH1;
> -}
> -
> /**
> * iavf_alloc_adminq_asq_ring - Allocate Admin Queue send rings
> * @hw: pointer to the hardware structure
> @@ -259,17 +238,17 @@ static enum iavf_status iavf_config_asq_regs(struct iavf_hw *hw)
> u32 reg = 0;
>
> /* Clear Head and Tail */
> - wr32(hw, hw->aq.asq.head, 0);
> - wr32(hw, hw->aq.asq.tail, 0);
> + wr32(hw, IAVF_VF_ATQH1, 0);
> + wr32(hw, IAVF_VF_ATQT1, 0);
>
> /* set starting point */
> - wr32(hw, hw->aq.asq.len, (hw->aq.num_asq_entries |
> + wr32(hw, IAVF_VF_ATQLEN1, (hw->aq.num_asq_entries |
> IAVF_VF_ATQLEN1_ATQENABLE_MASK));
> - wr32(hw, hw->aq.asq.bal, lower_32_bits(hw->aq.asq.desc_buf.pa));
> - wr32(hw, hw->aq.asq.bah, upper_32_bits(hw->aq.asq.desc_buf.pa));
> + wr32(hw, IAVF_VF_ATQBAL1, lower_32_bits(hw->aq.asq.desc_buf.pa));
> + wr32(hw, IAVF_VF_ATQBAH1, upper_32_bits(hw->aq.asq.desc_buf.pa));
>
> /* Check one register to verify that config was applied */
> - reg = rd32(hw, hw->aq.asq.bal);
> + reg = rd32(hw, IAVF_VF_ATQBAL1);
> if (reg != lower_32_bits(hw->aq.asq.desc_buf.pa))
> ret_code = IAVF_ERR_ADMIN_QUEUE_ERROR;
>
> @@ -288,20 +267,20 @@ static enum iavf_status iavf_config_arq_regs(struct iavf_hw *hw)
> u32 reg = 0;
>
> /* Clear Head and Tail */
> - wr32(hw, hw->aq.arq.head, 0);
> - wr32(hw, hw->aq.arq.tail, 0);
> + wr32(hw, IAVF_VF_ARQH1, 0);
> + wr32(hw, IAVF_VF_ARQT1, 0);
>
> /* set starting point */
> - wr32(hw, hw->aq.arq.len, (hw->aq.num_arq_entries |
> + wr32(hw, IAVF_VF_ARQLEN1, (hw->aq.num_arq_entries |
> IAVF_VF_ARQLEN1_ARQENABLE_MASK));
> - wr32(hw, hw->aq.arq.bal, lower_32_bits(hw->aq.arq.desc_buf.pa));
> - wr32(hw, hw->aq.arq.bah, upper_32_bits(hw->aq.arq.desc_buf.pa));
> + wr32(hw, IAVF_VF_ARQBAL1, lower_32_bits(hw->aq.arq.desc_buf.pa));
> + wr32(hw, IAVF_VF_ARQBAH1, upper_32_bits(hw->aq.arq.desc_buf.pa));
>
> /* Update tail in the HW to post pre-allocated buffers */
> - wr32(hw, hw->aq.arq.tail, hw->aq.num_arq_entries - 1);
> + wr32(hw, IAVF_VF_ARQT1, hw->aq.num_arq_entries - 1);
>
> /* Check one register to verify that config was applied */
> - reg = rd32(hw, hw->aq.arq.bal);
> + reg = rd32(hw, IAVF_VF_ARQBAL1);
> if (reg != lower_32_bits(hw->aq.arq.desc_buf.pa))
> ret_code = IAVF_ERR_ADMIN_QUEUE_ERROR;
>
> @@ -455,11 +434,11 @@ static enum iavf_status iavf_shutdown_asq(struct iavf_hw *hw)
> }
>
> /* Stop firmware AdminQ processing */
> - wr32(hw, hw->aq.asq.head, 0);
> - wr32(hw, hw->aq.asq.tail, 0);
> - wr32(hw, hw->aq.asq.len, 0);
> - wr32(hw, hw->aq.asq.bal, 0);
> - wr32(hw, hw->aq.asq.bah, 0);
> + wr32(hw, IAVF_VF_ATQH1, 0);
> + wr32(hw, IAVF_VF_ATQT1, 0);
> + wr32(hw, IAVF_VF_ATQLEN1, 0);
> + wr32(hw, IAVF_VF_ATQBAL1, 0);
> + wr32(hw, IAVF_VF_ATQBAH1, 0);
>
> hw->aq.asq.count = 0; /* to indicate uninitialized queue */
>
> @@ -489,11 +468,11 @@ static enum iavf_status iavf_shutdown_arq(struct iavf_hw *hw)
> }
>
> /* Stop firmware AdminQ processing */
> - wr32(hw, hw->aq.arq.head, 0);
> - wr32(hw, hw->aq.arq.tail, 0);
> - wr32(hw, hw->aq.arq.len, 0);
> - wr32(hw, hw->aq.arq.bal, 0);
> - wr32(hw, hw->aq.arq.bah, 0);
> + wr32(hw, IAVF_VF_ARQH1, 0);
> + wr32(hw, IAVF_VF_ARQT1, 0);
> + wr32(hw, IAVF_VF_ARQLEN1, 0);
> + wr32(hw, IAVF_VF_ARQBAL1, 0);
> + wr32(hw, IAVF_VF_ARQBAH1, 0);
>
> hw->aq.arq.count = 0; /* to indicate uninitialized queue */
>
> @@ -529,9 +508,6 @@ enum iavf_status iavf_init_adminq(struct iavf_hw *hw)
> goto init_adminq_exit;
> }
>
> - /* Set up register offsets */
> - iavf_adminq_init_regs(hw);
> -
> /* setup ASQ command write back timeout */
> hw->aq.asq_cmd_timeout = IAVF_ASQ_CMD_TIMEOUT;
>
> @@ -587,9 +563,9 @@ static u16 iavf_clean_asq(struct iavf_hw *hw)
>
> desc = IAVF_ADMINQ_DESC(*asq, ntc);
> details = IAVF_ADMINQ_DETAILS(*asq, ntc);
> - while (rd32(hw, hw->aq.asq.head) != ntc) {
> + while (rd32(hw, IAVF_VF_ATQH1) != ntc) {
> iavf_debug(hw, IAVF_DEBUG_AQ_MESSAGE,
> - "ntc %d head %d.\n", ntc, rd32(hw, hw->aq.asq.head));
> + "ntc %d head %d.\n", ntc, rd32(hw, IAVF_VF_ATQH1));
>
> if (details->callback) {
> IAVF_ADMINQ_CALLBACK cb_func =
> @@ -624,7 +600,7 @@ bool iavf_asq_done(struct iavf_hw *hw)
> /* AQ designers suggest use of head for better
> * timing reliability than DD bit
> */
> - return rd32(hw, hw->aq.asq.head) == hw->aq.asq.next_to_use;
> + return rd32(hw, IAVF_VF_ATQH1) == hw->aq.asq.next_to_use;
> }
>
> /**
> @@ -663,7 +639,7 @@ enum iavf_status iavf_asq_send_command(struct iavf_hw *hw,
>
> hw->aq.asq_last_status = IAVF_AQ_RC_OK;
>
> - val = rd32(hw, hw->aq.asq.head);
> + val = rd32(hw, IAVF_VF_ATQH1);
> if (val >= hw->aq.num_asq_entries) {
> iavf_debug(hw, IAVF_DEBUG_AQ_MESSAGE,
> "AQTX: head overrun at %d\n", val);
> @@ -755,7 +731,7 @@ enum iavf_status iavf_asq_send_command(struct iavf_hw *hw,
> if (hw->aq.asq.next_to_use == hw->aq.asq.count)
> hw->aq.asq.next_to_use = 0;
> if (!details->postpone)
> - wr32(hw, hw->aq.asq.tail, hw->aq.asq.next_to_use);
> + wr32(hw, IAVF_VF_ATQT1, hw->aq.asq.next_to_use);
>
> /* if cmd_details are not defined or async flag is not set,
> * we need to wait for desc write back
> @@ -810,7 +786,7 @@ enum iavf_status iavf_asq_send_command(struct iavf_hw *hw,
> /* update the error if time out occurred */
> if ((!cmd_completed) &&
> (!details->async && !details->postpone)) {
> - if (rd32(hw, hw->aq.asq.len) & IAVF_VF_ATQLEN1_ATQCRIT_MASK) {
> + if (rd32(hw, IAVF_VF_ATQLEN1) & IAVF_VF_ATQLEN1_ATQCRIT_MASK) {
> iavf_debug(hw, IAVF_DEBUG_AQ_MESSAGE,
> "AQTX: AQ Critical error.\n");
> status = IAVF_ERR_ADMIN_QUEUE_CRITICAL_ERROR;
> @@ -878,7 +854,7 @@ enum iavf_status iavf_clean_arq_element(struct iavf_hw *hw,
> }
>
> /* set next_to_use to head */
> - ntu = rd32(hw, hw->aq.arq.head) & IAVF_VF_ARQH1_ARQH_MASK;
> + ntu = rd32(hw, IAVF_VF_ARQH1) & IAVF_VF_ARQH1_ARQH_MASK;
> if (ntu == ntc) {
> /* nothing to do - shouldn't need to update ring's values */
> ret_code = IAVF_ERR_ADMIN_QUEUE_NO_WORK;
> @@ -926,7 +902,7 @@ enum iavf_status iavf_clean_arq_element(struct iavf_hw *hw,
> desc->params.external.addr_low = cpu_to_le32(lower_32_bits(bi->pa));
>
> /* set tail = the last cleaned desc index. */
> - wr32(hw, hw->aq.arq.tail, ntc);
> + wr32(hw, IAVF_VF_ARQT1, ntc);
> /* ntc is updated to tail + 1 */
> ntc++;
> if (ntc == hw->aq.num_arq_entries)
> diff --git a/drivers/net/ethernet/intel/iavf/iavf_adminq.h b/drivers/net/ethernet/intel/iavf/iavf_adminq.h
> index 1f60518eb0e5..406506f64bdd 100644
> --- a/drivers/net/ethernet/intel/iavf/iavf_adminq.h
> +++ b/drivers/net/ethernet/intel/iavf/iavf_adminq.h
> @@ -29,13 +29,6 @@ struct iavf_adminq_ring {
> /* used for interrupt processing */
> u16 next_to_use;
> u16 next_to_clean;
> -
> - /* used for queue tracking */
> - u32 head;
> - u32 tail;
> - u32 len;
> - u32 bah;
> - u32 bal;
> };
>
> /* ASQ transaction details */
> diff --git a/drivers/net/ethernet/intel/iavf/iavf_common.c b/drivers/net/ethernet/intel/iavf/iavf_common.c
> index 8091e6feca01..89d2bce529ae 100644
> --- a/drivers/net/ethernet/intel/iavf/iavf_common.c
> +++ b/drivers/net/ethernet/intel/iavf/iavf_common.c
> @@ -279,11 +279,11 @@ void iavf_debug_aq(struct iavf_hw *hw, enum iavf_debug_mask mask, void *desc,
> **/
> bool iavf_check_asq_alive(struct iavf_hw *hw)
> {
> - if (hw->aq.asq.len)
> - return !!(rd32(hw, hw->aq.asq.len) &
> - IAVF_VF_ATQLEN1_ATQENABLE_MASK);
> - else
> + /* Check if the queue is initialized */
> + if (!hw->aq.asq.count)
> return false;
> +
> + return !!(rd32(hw, IAVF_VF_ATQLEN1) & IAVF_VF_ATQLEN1_ATQENABLE_MASK);
> }
>
> /**
> diff --git a/drivers/net/ethernet/intel/iavf/iavf_main.c b/drivers/net/ethernet/intel/iavf/iavf_main.c
> index 6e27b7938b8a..146755498feb 100644
> --- a/drivers/net/ethernet/intel/iavf/iavf_main.c
> +++ b/drivers/net/ethernet/intel/iavf/iavf_main.c
> @@ -3253,7 +3253,7 @@ static void iavf_adminq_task(struct work_struct *work)
> goto freedom;
>
> /* check for error indications */
> - val = rd32(hw, hw->aq.arq.len);
> + val = rd32(hw, IAVF_VF_ARQLEN1);
> if (val == 0xdeadbeef || val == 0xffffffff) /* device in reset */
> goto freedom;
> oldval = val;
> @@ -3270,9 +3270,9 @@ static void iavf_adminq_task(struct work_struct *work)
> val &= ~IAVF_VF_ARQLEN1_ARQCRIT_MASK;
> }
> if (oldval != val)
> - wr32(hw, hw->aq.arq.len, val);
> + wr32(hw, IAVF_VF_ARQLEN1, val);
>
> - val = rd32(hw, hw->aq.asq.len);
> + val = rd32(hw, IAVF_VF_ATQLEN1);
> oldval = val;
> if (val & IAVF_VF_ATQLEN1_ATQVFE_MASK) {
> dev_info(&adapter->pdev->dev, "ASQ VF Error detected\n");
> @@ -3287,7 +3287,7 @@ static void iavf_adminq_task(struct work_struct *work)
> val &= ~IAVF_VF_ATQLEN1_ATQCRIT_MASK;
> }
> if (oldval != val)
> - wr32(hw, hw->aq.asq.len, val);
> + wr32(hw, IAVF_VF_ATQLEN1, val);
>
> freedom:
> kfree(event.msg_buf);
_______________________________________________
Intel-wired-lan mailing list
Intel-wired-lan@osuosl.org
https://lists.osuosl.org/mailman/listinfo/intel-wired-lan
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: [PATCH iwl-next] iavf: Remove queue tracking fields from iavf_adminq_ring
2023-10-26 8:39 ` Ivan Vecera
@ 2023-11-03 17:09 ` Simon Horman
-1 siblings, 0 replies; 10+ messages in thread
From: Simon Horman @ 2023-11-03 17:09 UTC (permalink / raw)
To: Ivan Vecera
Cc: netdev, Jesse Brandeburg, Tony Nguyen, David S. Miller,
Eric Dumazet, Jakub Kicinski, Paolo Abeni, intel-wired-lan,
linux-kernel, Jacob Keller, Wojciech Drewek
On Thu, Oct 26, 2023 at 10:39:32AM +0200, Ivan Vecera wrote:
> Fields 'head', 'tail', 'len', 'bah' and 'bal' in iavf_adminq_ring
> are used to store register offsets. These offsets are initialized
> and remains constant so there is no need to store them in the
> iavf_adminq_ring structure.
>
> Remove these fields from iavf_adminq_ring and use register offset
> constants instead. Remove iavf_adminq_init_regs() that originally
> stores these constants into these fields.
>
> Finally improve iavf_check_asq_alive() that assumes that
> non-zero value of hw->aq.asq.len indicates fully initialized
> AdminQ send queue. Replace it by check for non-zero value
> of field hw->aq.asq.count that is non-zero when the sending
> queue is initialized and is zeroed during shutdown of
> the queue.
>
> Signed-off-by: Ivan Vecera <ivecera@redhat.com>
Thanks, this is a nice cleanup.
Reviewed-by: Simon Horman <horms@kernel.org>
...
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: [Intel-wired-lan] [PATCH iwl-next] iavf: Remove queue tracking fields from iavf_adminq_ring
@ 2023-11-03 17:09 ` Simon Horman
0 siblings, 0 replies; 10+ messages in thread
From: Simon Horman @ 2023-11-03 17:09 UTC (permalink / raw)
To: Ivan Vecera
Cc: Wojciech Drewek, netdev, Jesse Brandeburg, linux-kernel,
Eric Dumazet, Tony Nguyen, intel-wired-lan, Jacob Keller,
Jakub Kicinski, Paolo Abeni, David S. Miller
On Thu, Oct 26, 2023 at 10:39:32AM +0200, Ivan Vecera wrote:
> Fields 'head', 'tail', 'len', 'bah' and 'bal' in iavf_adminq_ring
> are used to store register offsets. These offsets are initialized
> and remains constant so there is no need to store them in the
> iavf_adminq_ring structure.
>
> Remove these fields from iavf_adminq_ring and use register offset
> constants instead. Remove iavf_adminq_init_regs() that originally
> stores these constants into these fields.
>
> Finally improve iavf_check_asq_alive() that assumes that
> non-zero value of hw->aq.asq.len indicates fully initialized
> AdminQ send queue. Replace it by check for non-zero value
> of field hw->aq.asq.count that is non-zero when the sending
> queue is initialized and is zeroed during shutdown of
> the queue.
>
> Signed-off-by: Ivan Vecera <ivecera@redhat.com>
Thanks, this is a nice cleanup.
Reviewed-by: Simon Horman <horms@kernel.org>
...
_______________________________________________
Intel-wired-lan mailing list
Intel-wired-lan@osuosl.org
https://lists.osuosl.org/mailman/listinfo/intel-wired-lan
^ permalink raw reply [flat|nested] 10+ messages in thread
* RE: [Intel-wired-lan] [PATCH iwl-next] iavf: Remove queue tracking fields from iavf_adminq_ring
2023-11-03 17:09 ` [Intel-wired-lan] " Simon Horman
@ 2023-11-16 15:52 ` Romanowski, Rafal
-1 siblings, 0 replies; 10+ messages in thread
From: Romanowski, Rafal @ 2023-11-16 15:52 UTC (permalink / raw)
To: Simon Horman, ivecera
Cc: Drewek, Wojciech, netdev, Brandeburg, Jesse, linux-kernel,
Eric Dumazet, Nguyen, Anthony L, intel-wired-lan, Keller,
Jacob E, Jakub Kicinski, Paolo Abeni, David S. Miller
> -----Original Message-----
> From: Intel-wired-lan <intel-wired-lan-bounces@osuosl.org> On Behalf Of
> Simon Horman
> Sent: Friday, November 3, 2023 6:09 PM
> To: ivecera <ivecera@redhat.com>
> Cc: Drewek, Wojciech <wojciech.drewek@intel.com>;
> netdev@vger.kernel.org; Brandeburg, Jesse <jesse.brandeburg@intel.com>;
> linux-kernel@vger.kernel.org; Eric Dumazet <edumazet@google.com>;
> Nguyen, Anthony L <anthony.l.nguyen@intel.com>; intel-wired-
> lan@lists.osuosl.org; Keller, Jacob E <jacob.e.keller@intel.com>; Jakub Kicinski
> <kuba@kernel.org>; Paolo Abeni <pabeni@redhat.com>; David S. Miller
> <davem@davemloft.net>
> Subject: Re: [Intel-wired-lan] [PATCH iwl-next] iavf: Remove queue tracking
> fields from iavf_adminq_ring
>
> On Thu, Oct 26, 2023 at 10:39:32AM +0200, Ivan Vecera wrote:
> > Fields 'head', 'tail', 'len', 'bah' and 'bal' in iavf_adminq_ring are
> > used to store register offsets. These offsets are initialized and
> > remains constant so there is no need to store them in the
> > iavf_adminq_ring structure.
> >
> > Remove these fields from iavf_adminq_ring and use register offset
> > constants instead. Remove iavf_adminq_init_regs() that originally
> > stores these constants into these fields.
> >
> > Finally improve iavf_check_asq_alive() that assumes that non-zero
> > value of hw->aq.asq.len indicates fully initialized AdminQ send queue.
> > Replace it by check for non-zero value of field hw->aq.asq.count that
> > is non-zero when the sending queue is initialized and is zeroed during
> > shutdown of the queue.
> >
> > Signed-off-by: Ivan Vecera <ivecera@redhat.com>
>
> Thanks, this is a nice cleanup.
>
> Reviewed-by: Simon Horman <horms@kernel.org>
>
> ...
> _______________________________________________
> Intel-wired-lan mailing list
> Intel-wired-lan@osuosl.org
> https://lists.osuosl.org/mailman/listinfo/intel-wired-lan
Tested-by: Rafal Romanowski <rafal.romanowski@intel.com>
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: [Intel-wired-lan] [PATCH iwl-next] iavf: Remove queue tracking fields from iavf_adminq_ring
@ 2023-11-16 15:52 ` Romanowski, Rafal
0 siblings, 0 replies; 10+ messages in thread
From: Romanowski, Rafal @ 2023-11-16 15:52 UTC (permalink / raw)
To: Simon Horman, ivecera
Cc: Drewek, Wojciech, netdev, Brandeburg, Jesse, linux-kernel,
Eric Dumazet, Nguyen, Anthony L, Jakub Kicinski, Keller, Jacob E,
intel-wired-lan, Paolo Abeni, David S. Miller
> -----Original Message-----
> From: Intel-wired-lan <intel-wired-lan-bounces@osuosl.org> On Behalf Of
> Simon Horman
> Sent: Friday, November 3, 2023 6:09 PM
> To: ivecera <ivecera@redhat.com>
> Cc: Drewek, Wojciech <wojciech.drewek@intel.com>;
> netdev@vger.kernel.org; Brandeburg, Jesse <jesse.brandeburg@intel.com>;
> linux-kernel@vger.kernel.org; Eric Dumazet <edumazet@google.com>;
> Nguyen, Anthony L <anthony.l.nguyen@intel.com>; intel-wired-
> lan@lists.osuosl.org; Keller, Jacob E <jacob.e.keller@intel.com>; Jakub Kicinski
> <kuba@kernel.org>; Paolo Abeni <pabeni@redhat.com>; David S. Miller
> <davem@davemloft.net>
> Subject: Re: [Intel-wired-lan] [PATCH iwl-next] iavf: Remove queue tracking
> fields from iavf_adminq_ring
>
> On Thu, Oct 26, 2023 at 10:39:32AM +0200, Ivan Vecera wrote:
> > Fields 'head', 'tail', 'len', 'bah' and 'bal' in iavf_adminq_ring are
> > used to store register offsets. These offsets are initialized and
> > remains constant so there is no need to store them in the
> > iavf_adminq_ring structure.
> >
> > Remove these fields from iavf_adminq_ring and use register offset
> > constants instead. Remove iavf_adminq_init_regs() that originally
> > stores these constants into these fields.
> >
> > Finally improve iavf_check_asq_alive() that assumes that non-zero
> > value of hw->aq.asq.len indicates fully initialized AdminQ send queue.
> > Replace it by check for non-zero value of field hw->aq.asq.count that
> > is non-zero when the sending queue is initialized and is zeroed during
> > shutdown of the queue.
> >
> > Signed-off-by: Ivan Vecera <ivecera@redhat.com>
>
> Thanks, this is a nice cleanup.
>
> Reviewed-by: Simon Horman <horms@kernel.org>
>
> ...
> _______________________________________________
> Intel-wired-lan mailing list
> Intel-wired-lan@osuosl.org
> https://lists.osuosl.org/mailman/listinfo/intel-wired-lan
Tested-by: Rafal Romanowski <rafal.romanowski@intel.com>
_______________________________________________
Intel-wired-lan mailing list
Intel-wired-lan@osuosl.org
https://lists.osuosl.org/mailman/listinfo/intel-wired-lan
^ permalink raw reply [flat|nested] 10+ messages in thread
end of thread, other threads:[~2023-11-16 15:52 UTC | newest]
Thread overview: 10+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2023-10-26 8:39 [Intel-wired-lan] [PATCH iwl-next] iavf: Remove queue tracking fields from iavf_adminq_ring Ivan Vecera
2023-10-26 8:39 ` Ivan Vecera
2023-10-26 9:10 ` Przemek Kitszel
2023-10-26 9:10 ` [Intel-wired-lan] " Przemek Kitszel
2023-10-26 9:47 ` Wojciech Drewek
2023-10-26 9:47 ` [Intel-wired-lan] " Wojciech Drewek
2023-11-03 17:09 ` Simon Horman
2023-11-03 17:09 ` [Intel-wired-lan] " Simon Horman
2023-11-16 15:52 ` Romanowski, Rafal
2023-11-16 15:52 ` Romanowski, Rafal
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