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Message-ID: <20241204143112.29411-6-piotr.kwapulinski@intel.com>
Date: Wed, 4 Dec 2024 15:31:09 +0100
From: Piotr Kwapulinski <piotr.kwapulinski@...el.com>
To: intel-wired-lan@...ts.osuosl.org
Cc: netdev@...r.kernel.org,
Piotr Kwapulinski <piotr.kwapulinski@...el.com>,
Stefan Wegrzyn <stefan.wegrzyn@...el.com>
Subject: [PATCH iwl-next v11 5/8] ixgbe: Add support for EEPROM dump in E610 device
Add low level support for EEPROM dump for the specified network device.
Co-developed-by: Stefan Wegrzyn <stefan.wegrzyn@...el.com>
Signed-off-by: Stefan Wegrzyn <stefan.wegrzyn@...el.com>
Signed-off-by: Piotr Kwapulinski <piotr.kwapulinski@...el.com>
---
drivers/net/ethernet/intel/ixgbe/ixgbe_e610.c | 93 +++++++++++++++++++
drivers/net/ethernet/intel/ixgbe/ixgbe_e610.h | 5 +
.../ethernet/intel/ixgbe/ixgbe_type_e610.h | 8 ++
3 files changed, 106 insertions(+)
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_e610.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_e610.c
index 0542b4b..503a047 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_e610.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_e610.c
@@ -2070,6 +2070,38 @@ int ixgbe_enter_lplu_e610(struct ixgbe_hw *hw)
return ixgbe_aci_set_phy_cfg(hw, &phy_cfg);
}
+/**
+ * ixgbe_init_eeprom_params_E610 - Initialize EEPROM params
+ * @hw: pointer to hardware structure
+ *
+ * Initialize the EEPROM parameters ixgbe_eeprom_info within the ixgbe_hw
+ * struct in order to set up EEPROM access.
+ *
+ * Return: the operation exit code
+ */
+int ixgbe_init_eeprom_params_e610(struct ixgbe_hw *hw)
+{
+ struct ixgbe_eeprom_info *eeprom = &hw->eeprom;
+ u32 gens_stat;
+ u8 sr_size;
+
+ if (eeprom->type != ixgbe_eeprom_uninitialized)
+ return 0;
+
+ eeprom->type = ixgbe_flash;
+
+ gens_stat = IXGBE_READ_REG(hw, GLNVM_GENS);
+ sr_size = FIELD_GET(GLNVM_GENS_SR_SIZE_M, gens_stat);
+
+ /* Switching to words (sr_size contains power of 2). */
+ eeprom->word_size = BIT(sr_size) * IXGBE_SR_WORDS_IN_1KB;
+
+ hw_dbg(hw, "Eeprom params: type = %d, size = %d\n", eeprom->type,
+ eeprom->word_size);
+
+ return 0;
+}
+
/**
* ixgbe_aci_get_netlist_node - get a node handle
* @hw: pointer to the hw struct
@@ -2316,6 +2348,34 @@ int ixgbe_read_flat_nvm(struct ixgbe_hw *hw, u32 offset, u32 *length,
return err;
}
+/**
+ * ixgbe_read_sr_buf_aci - Read Shadow RAM buffer via ACI
+ * @hw: pointer to the HW structure
+ * @offset: offset of the Shadow RAM words to read (0x000000 - 0x001FFF)
+ * @words: (in) number of words to read; (out) number of words actually read
+ * @data: words read from the Shadow RAM
+ *
+ * Read 16 bit words (data buf) from the Shadow RAM. Acquire/release the NVM
+ * ownership.
+ *
+ * Return: the operation exit code
+ */
+int ixgbe_read_sr_buf_aci(struct ixgbe_hw *hw, u16 offset, u16 *words,
+ u16 *data)
+{
+ u32 bytes = *words * 2, i;
+ int err;
+
+ err = ixgbe_read_flat_nvm(hw, offset * 2, &bytes, (u8 *)data, true);
+
+ *words = bytes / 2;
+
+ for (i = 0; i < *words; i++)
+ data[i] = le16_to_cpu(((__le16 *)data)[i]);
+
+ return err;
+}
+
/**
* ixgbe_read_ee_aci_e610 - Read EEPROM word using the admin command.
* @hw: pointer to hardware structure
@@ -2349,6 +2409,39 @@ int ixgbe_read_ee_aci_e610(struct ixgbe_hw *hw, u16 offset, u16 *data)
return err;
}
+/**
+ * ixgbe_read_ee_aci_buffer_e610 - Read EEPROM words via ACI
+ * @hw: pointer to hardware structure
+ * @offset: offset of words in the EEPROM to read
+ * @words: number of words to read
+ * @data: words to read from the EEPROM
+ *
+ * Read 16 bit words from the EEPROM via the ACI. Initialize the EEPROM params
+ * prior to the read. Acquire/release the NVM ownership.
+ *
+ * Return: the operation exit code
+ */
+int ixgbe_read_ee_aci_buffer_e610(struct ixgbe_hw *hw, u16 offset,
+ u16 words, u16 *data)
+{
+ int err;
+
+ if (hw->eeprom.type == ixgbe_eeprom_uninitialized) {
+ err = hw->eeprom.ops.init_params(hw);
+ if (err)
+ return err;
+ }
+
+ err = ixgbe_acquire_nvm(hw, IXGBE_RES_READ);
+ if (err)
+ return err;
+
+ err = ixgbe_read_sr_buf_aci(hw, offset, &words, data);
+ ixgbe_release_nvm(hw);
+
+ return err;
+}
+
/**
* ixgbe_validate_eeprom_checksum_e610 - Validate EEPROM checksum
* @hw: pointer to hardware structure
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_e610.h b/drivers/net/ethernet/intel/ixgbe/ixgbe_e610.h
index 412ddd1..9cfcfee 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_e610.h
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_e610.h
@@ -56,6 +56,7 @@ int ixgbe_identify_module_e610(struct ixgbe_hw *hw);
int ixgbe_setup_phy_link_e610(struct ixgbe_hw *hw);
int ixgbe_set_phy_power_e610(struct ixgbe_hw *hw, bool on);
int ixgbe_enter_lplu_e610(struct ixgbe_hw *hw);
+int ixgbe_init_eeprom_params_e610(struct ixgbe_hw *hw);
int ixgbe_aci_get_netlist_node(struct ixgbe_hw *hw,
struct ixgbe_aci_cmd_get_link_topo *cmd,
u8 *node_part_number, u16 *node_handle);
@@ -69,7 +70,11 @@ int ixgbe_nvm_validate_checksum(struct ixgbe_hw *hw);
int ixgbe_read_sr_word_aci(struct ixgbe_hw *hw, u16 offset, u16 *data);
int ixgbe_read_flat_nvm(struct ixgbe_hw *hw, u32 offset, u32 *length,
u8 *data, bool read_shadow_ram);
+int ixgbe_read_sr_buf_aci(struct ixgbe_hw *hw, u16 offset, u16 *words,
+ u16 *data);
int ixgbe_read_ee_aci_e610(struct ixgbe_hw *hw, u16 offset, u16 *data);
+int ixgbe_read_ee_aci_buffer_e610(struct ixgbe_hw *hw, u16 offset,
+ u16 words, u16 *data);
int ixgbe_validate_eeprom_checksum_e610(struct ixgbe_hw *hw, u16 *checksum_val);
#endif /* _IXGBE_E610_H_ */
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_type_e610.h b/drivers/net/ethernet/intel/ixgbe/ixgbe_type_e610.h
index ecc3fc8..9dba8b5 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_type_e610.h
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_type_e610.h
@@ -12,11 +12,19 @@
/* Checksum and Shadow RAM pointers */
#define E610_SR_SW_CHECKSUM_WORD 0x3F
+/* Shadow RAM related */
+#define IXGBE_SR_WORDS_IN_1KB 512
+
/* Firmware Status Register (GL_FWSTS) */
#define GL_FWSTS 0x00083048 /* Reset Source: POR */
#define GL_FWSTS_EP_PF0 BIT(24)
#define GL_FWSTS_EP_PF1 BIT(25)
+/* Global NVM General Status Register */
+#define GLNVM_GENS 0x000B6100 /* Reset Source: POR */
+#define GLNVM_GENS_SR_SIZE_S 5
+#define GLNVM_GENS_SR_SIZE_M GENMASK(7, 5)
+
/* Flash Access Register */
#define IXGBE_GLNVM_FLA 0x000B6108 /* Reset Source: POR */
#define IXGBE_GLNVM_FLA_LOCKED_S 6
--
2.43.0
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