ice: Enable DDP package download

Attempt to request an optional device-specific DDP package file
(one with the PCIe Device Serial Number in its name so that different DDP
package files can be used on different devices). If the optional package
file exists, download it to the device. If not, download the default
package file.

Log an appropriate message based on whether or not a DDP package
file exists and the return code from the attempt to download it to the
device.  If the download fails and there is not already a package file on
the device, go into "Safe Mode" where some features are not supported.

Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>

1 files changed, 69 insertions, 0 deletions

diff --git a/drivers/net/ethernet/intel/ice/ice_common.c b/drivers/net/ethernet/intel/ice/ice_common.c
index 91472e049231..3a6b3950eb0e 100644
--- a/drivers/net/ethernet/intel/ice/ice_common.c
+++ b/drivers/net/ethernet/intel/ice/ice_common.c
@@ -1847,6 +1847,75 @@ ice_discover_caps(struct ice_hw *hw, enum ice_adminq_opc opc)
 }
 
 /**
+ * ice_set_safe_mode_caps - Override dev/func capabilities when in safe mode
+ * @hw: pointer to the hardware structure
+ */
+void ice_set_safe_mode_caps(struct ice_hw *hw)
+{
+	struct ice_hw_func_caps *func_caps = &hw->func_caps;
+	struct ice_hw_dev_caps *dev_caps = &hw->dev_caps;
+	u32 valid_func, rxq_first_id, txq_first_id;
+	u32 msix_vector_first_id, max_mtu;
+	u32 num_func = 0;
+	u8 i;
+
+	/* cache some func_caps values that should be restored after memset */
+	valid_func = func_caps->common_cap.valid_functions;
+	txq_first_id = func_caps->common_cap.txq_first_id;
+	rxq_first_id = func_caps->common_cap.rxq_first_id;
+	msix_vector_first_id = func_caps->common_cap.msix_vector_first_id;
+	max_mtu = func_caps->common_cap.max_mtu;
+
+	/* unset func capabilities */
+	memset(func_caps, 0, sizeof(*func_caps));
+
+	/* restore cached values */
+	func_caps->common_cap.valid_functions = valid_func;
+	func_caps->common_cap.txq_first_id = txq_first_id;
+	func_caps->common_cap.rxq_first_id = rxq_first_id;
+	func_caps->common_cap.msix_vector_first_id = msix_vector_first_id;
+	func_caps->common_cap.max_mtu = max_mtu;
+
+	/* one Tx and one Rx queue in safe mode */
+	func_caps->common_cap.num_rxq = 1;
+	func_caps->common_cap.num_txq = 1;
+
+	/* two MSIX vectors, one for traffic and one for misc causes */
+	func_caps->common_cap.num_msix_vectors = 2;
+	func_caps->guar_num_vsi = 1;
+
+	/* cache some dev_caps values that should be restored after memset */
+	valid_func = dev_caps->common_cap.valid_functions;
+	txq_first_id = dev_caps->common_cap.txq_first_id;
+	rxq_first_id = dev_caps->common_cap.rxq_first_id;
+	msix_vector_first_id = dev_caps->common_cap.msix_vector_first_id;
+	max_mtu = dev_caps->common_cap.max_mtu;
+
+	/* unset dev capabilities */
+	memset(dev_caps, 0, sizeof(*dev_caps));
+
+	/* restore cached values */
+	dev_caps->common_cap.valid_functions = valid_func;
+	dev_caps->common_cap.txq_first_id = txq_first_id;
+	dev_caps->common_cap.rxq_first_id = rxq_first_id;
+	dev_caps->common_cap.msix_vector_first_id = msix_vector_first_id;
+	dev_caps->common_cap.max_mtu = max_mtu;
+
+	/* valid_func is a bitmap. get number of functions */
+#define ICE_MAX_FUNCS 8
+	for (i = 0; i < ICE_MAX_FUNCS; i++)
+		if (valid_func & BIT(i))
+			num_func++;
+
+	/* one Tx and one Rx queue per function in safe mode */
+	dev_caps->common_cap.num_rxq = num_func;
+	dev_caps->common_cap.num_txq = num_func;
+
+	/* two MSIX vectors per function */
+	dev_caps->common_cap.num_msix_vectors = 2 * num_func;
+}
+
+/**
  * ice_get_caps - get info about the HW
  * @hw: pointer to the hardware structure
  */