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Message-Id: <20230523174008.3585300-4-anthony.l.nguyen@intel.com>
Date: Tue, 23 May 2023 10:40:06 -0700
From: Tony Nguyen <anthony.l.nguyen@...el.com>
To: davem@...emloft.net,
kuba@...nel.org,
pabeni@...hat.com,
edumazet@...gle.com,
netdev@...r.kernel.org
Cc: Michal Wilczynski <michal.wilczynski@...el.com>,
anthony.l.nguyen@...el.com,
lukasz.czapnik@...el.com,
przemyslaw.kitszel@...el.com,
jiri@...nulli.us,
Pucha Himasekhar Reddy <himasekharx.reddy.pucha@...el.com>
Subject: [PATCH net-next 3/5] ice: Enable switching default tx scheduler topology
From: Michal Wilczynski <michal.wilczynski@...el.com>
Introduce support for tx scheduler topology change, based on user
selection, from default 9-layer to 5-layer. In order for switch to be
successful there is a new NVM(version 3.20 or older) and DDP package(OS
Package 1.3.29 or older).
Enable 5-layer topology switch in init path of the driver. To accomplish
that upload of the DDP package needs to be delayed, until change in Tx
topology is finished. To trigger the Tx change user selection should be
changed in NVM using devlink. Then the platform should be rebooted.
Signed-off-by: Michal Wilczynski <michal.wilczynski@...el.com>
Tested-by: Pucha Himasekhar Reddy <himasekharx.reddy.pucha@...el.com> (A Contingent worker at Intel)
Signed-off-by: Tony Nguyen <anthony.l.nguyen@...el.com>
---
drivers/net/ethernet/intel/ice/ice_main.c | 105 ++++++++++++++++++----
1 file changed, 86 insertions(+), 19 deletions(-)
diff --git a/drivers/net/ethernet/intel/ice/ice_main.c b/drivers/net/ethernet/intel/ice/ice_main.c
index 62e91512aeab..4367da4eb352 100644
--- a/drivers/net/ethernet/intel/ice/ice_main.c
+++ b/drivers/net/ethernet/intel/ice/ice_main.c
@@ -4264,11 +4264,11 @@ static char *ice_get_opt_fw_name(struct ice_pf *pf)
/**
* ice_request_fw - Device initialization routine
* @pf: pointer to the PF instance
+ * @firmware: double pointer to firmware struct
*/
-static void ice_request_fw(struct ice_pf *pf)
+static int ice_request_fw(struct ice_pf *pf, const struct firmware **firmware)
{
char *opt_fw_filename = ice_get_opt_fw_name(pf);
- const struct firmware *firmware = NULL;
struct device *dev = ice_pf_to_dev(pf);
int err = 0;
@@ -4277,29 +4277,94 @@ static void ice_request_fw(struct ice_pf *pf)
* and warning messages for other errors.
*/
if (opt_fw_filename) {
- err = firmware_request_nowarn(&firmware, opt_fw_filename, dev);
- if (err) {
- kfree(opt_fw_filename);
- goto dflt_pkg_load;
- }
-
- /* request for firmware was successful. Download to device */
- ice_load_pkg(firmware, pf);
+ err = firmware_request_nowarn(firmware, opt_fw_filename, dev);
kfree(opt_fw_filename);
- release_firmware(firmware);
- return;
+ if (!err)
+ return err;
}
+ err = request_firmware(firmware, ICE_DDP_PKG_FILE, dev);
+ if (err)
+ dev_err(dev, "The DDP package file was not found or could not be read. Entering Safe Mode\n");
+
+ return err;
+}
+
+/**
+ * ice_init_tx_topology - performs Tx topology initialization
+ * @hw: pointer to the hardware structure
+ * @firmware: pointer to firmware structure
+ */
+static int
+ice_init_tx_topology(struct ice_hw *hw, const struct firmware *firmware)
+{
+ u8 num_tx_sched_layers = hw->num_tx_sched_layers;
+ struct ice_pf *pf = hw->back;
+ struct device *dev;
+ u8 *buf_copy;
+ int err;
+
+ dev = ice_pf_to_dev(pf);
+ /* ice_cfg_tx_topo buf argument is not a constant,
+ * so we have to make a copy
+ */
+ buf_copy = kmemdup(firmware->data, firmware->size, GFP_KERNEL);
+
+ err = ice_cfg_tx_topo(hw, buf_copy, firmware->size);
+ if (!err) {
+ if (hw->num_tx_sched_layers > num_tx_sched_layers)
+ dev_info(dev, "Transmit balancing feature disabled\n");
+ else
+ dev_info(dev, "Transmit balancing feature enabled\n");
+ /* if there was a change in topology ice_cfg_tx_topo triggered
+ * a CORER and we need to re-init hw
+ */
+ ice_deinit_hw(hw);
+ err = ice_init_hw(hw);
+
+ /* in this case we're not allowing safe mode */
+ kfree(buf_copy);
-dflt_pkg_load:
- err = request_firmware(&firmware, ICE_DDP_PKG_FILE, dev);
+ return err;
+ } else if (err == -EIO) {
+ dev_info(dev, "DDP package does not support transmit balancing feature - please update to the latest DDP package and try again\n");
+ }
+
+ kfree(buf_copy);
+
+ return 0;
+}
+
+/**
+ * ice_init_ddp_config - DDP related configuration
+ * @hw: pointer to the hardware structure
+ * @pf: pointer to pf structure
+ *
+ * This function loads DDP file from the disk, then initializes Tx
+ * topology. At the end DDP package is loaded on the card.
+ */
+static int ice_init_ddp_config(struct ice_hw *hw, struct ice_pf *pf)
+{
+ struct device *dev = ice_pf_to_dev(pf);
+ const struct firmware *firmware = NULL;
+ int err;
+
+ err = ice_request_fw(pf, &firmware);
+ if (err)
+ return 0;
+
+ err = ice_init_tx_topology(hw, firmware);
if (err) {
- dev_err(dev, "The DDP package file was not found or could not be read. Entering Safe Mode\n");
- return;
+ dev_err(dev, "ice_init_hw during change of tx topology failed: %d\n",
+ err);
+ release_firmware(firmware);
+ return err;
}
- /* request for firmware was successful. Download to device */
+ /* Download firmware to device */
ice_load_pkg(firmware, pf);
release_firmware(firmware);
+
+ return 0;
}
/**
@@ -4506,9 +4571,11 @@ static int ice_init_dev(struct ice_pf *pf)
ice_init_feature_support(pf);
- ice_request_fw(pf);
+ err = ice_init_ddp_config(hw, pf);
+ if (err)
+ return err;
- /* if ice_request_fw fails, ICE_FLAG_ADV_FEATURES bit won't be
+ /* if ice_init_ddp_config fails, ICE_FLAG_ADV_FEATURES bit won't be
* set in pf->state, which will cause ice_is_safe_mode to return
* true
*/
--
2.38.1
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