[Intel-wired-lan] [PATCH v3 07/11] igc: Add HW initialization code
Sasha Neftin
sasha.neftin at intel.com
Sun Jun 24 08:45:15 UTC 2018
Add code for hw initialization and reset.
Add code for semaphore handling.
Sasha Neftin (v2):
fixed code indentation
refactor of igc_desc_unused method
Sasha Neftin (v3):
clean code and remove unused methods
Signed-off-by: Sasha Neftin <sasha.neftin at intel.com>
---
drivers/net/ethernet/intel/igc/Makefile | 3 +-
drivers/net/ethernet/intel/igc/e1000_base.c | 198 +++++++++++++++
drivers/net/ethernet/intel/igc/e1000_base.h | 2 +
drivers/net/ethernet/intel/igc/e1000_defines.h | 39 +++
drivers/net/ethernet/intel/igc/e1000_hw.h | 85 +++++++
drivers/net/ethernet/intel/igc/e1000_i225.c | 141 +++++++++++
drivers/net/ethernet/intel/igc/e1000_mac.c | 320 +++++++++++++++++++++++++
drivers/net/ethernet/intel/igc/e1000_mac.h | 13 +-
drivers/net/ethernet/intel/igc/e1000_regs.h | 27 +++
drivers/net/ethernet/intel/igc/igc_main.c | 21 ++
10 files changed, 846 insertions(+), 3 deletions(-)
create mode 100644 drivers/net/ethernet/intel/igc/e1000_i225.c
diff --git a/drivers/net/ethernet/intel/igc/Makefile b/drivers/net/ethernet/intel/igc/Makefile
index 6a757ac8492d..cb260bedfa37 100644
--- a/drivers/net/ethernet/intel/igc/Makefile
+++ b/drivers/net/ethernet/intel/igc/Makefile
@@ -7,5 +7,4 @@
obj-$(CONFIG_IGC) += igc.o
-igc-objs := igc_main.o e1000_mac.o \
-e1000_base.o
+igc-objs := igc_main.o e1000_mac.o e1000_i225.o e1000_base.o
diff --git a/drivers/net/ethernet/intel/igc/e1000_base.c b/drivers/net/ethernet/intel/igc/e1000_base.c
index 265ec98000e7..395d7ce70bb4 100644
--- a/drivers/net/ethernet/intel/igc/e1000_base.c
+++ b/drivers/net/ethernet/intel/igc/e1000_base.c
@@ -5,6 +5,92 @@
#include "e1000_hw.h"
#include "e1000_i225.h"
+#include "e1000_mac.h"
+#include "e1000_base.h"
+#include "igc.h"
+
+/* forward declaration */
+static s32 igc_get_invariants_base(struct e1000_hw *);
+static s32 igc_init_hw_base(struct e1000_hw *);
+static s32 igc_reset_hw_base(struct e1000_hw *);
+static s32 igc_set_pcie_completion_timeout(struct e1000_hw *hw);
+
+/**
+ * igc_init_mac_params_base - Init MAC func ptrs.
+ * @hw: pointer to the HW structure
+ **/
+static s32 igc_init_mac_params_base(struct e1000_hw *hw)
+{
+ struct e1000_mac_info *mac = &hw->mac;
+
+ /* Set mta register count */
+ mac->mta_reg_count = 128;
+ mac->rar_entry_count = E1000_RAR_ENTRIES;
+
+ /* reset */
+ mac->ops.reset_hw = igc_reset_hw_base;
+
+ mac->ops.acquire_swfw_sync = igc_acquire_swfw_sync_i225;
+ mac->ops.release_swfw_sync = igc_release_swfw_sync_i225;
+
+ return 0;
+}
+
+static s32 igc_get_invariants_base(struct e1000_hw *hw)
+{
+ s32 ret_val = 0;
+ u32 ctrl_ext = 0;
+ u32 link_mode = 0;
+
+ ctrl_ext = rd32(E1000_CTRL_EXT);
+ link_mode = ctrl_ext & E1000_CTRL_EXT_LINK_MODE_MASK;
+
+ /* mac initialization and operations */
+ ret_val = igc_init_mac_params_base(hw);
+ if (ret_val)
+ goto out;
+
+out:
+ return ret_val;
+}
+
+/**
+ * igc_init_hw_base - Initialize hardware
+ * @hw: pointer to the HW structure
+ *
+ * This inits the hardware readying it for operation.
+ **/
+static s32 igc_init_hw_base(struct e1000_hw *hw)
+{
+ struct e1000_mac_info *mac = &hw->mac;
+ s32 ret_val = 0;
+ u16 i, rar_count = mac->rar_entry_count;
+
+ /* Setup the receive address */
+ igc_init_rx_addrs(hw, rar_count);
+
+ /* Zero out the Multicast HASH table */
+ hw_dbg("Zeroing the MTA\n");
+ for (i = 0; i < mac->mta_reg_count; i++)
+ array_wr32(E1000_MTA, i, 0);
+
+ /* Zero out the Unicast HASH table */
+ hw_dbg("Zeroing the UTA\n");
+ for (i = 0; i < mac->uta_reg_count; i++)
+ array_wr32(E1000_UTA, i, 0);
+
+ /* Setup link and flow control */
+ ret_val = igc_setup_link(hw);
+
+ /* Clear all of the statistics registers (clear on read). It is
+ * important that we do this after we have tried to establish link
+ * because the symbol error count will increment wildly if there
+ * is no link.
+ */
+ igc_clear_hw_cntrs_base(hw);
+
+ return ret_val;
+}
/**
* igc_rx_fifo_flush_base - Clean rx fifo after Rx enable
@@ -81,3 +167,115 @@ void igc_rx_fifo_flush_base(struct e1000_hw *hw)
rd32(E1000_RNBC);
rd32(E1000_MPC);
}
+
+static struct e1000_mac_operations e1000_mac_ops_base = {
+ .init_hw = igc_init_hw_base,
+};
+
+const struct e1000_info e1000_base_info = {
+ .get_invariants = igc_get_invariants_base,
+ .mac_ops = &e1000_mac_ops_base,
+};
+
+/**
+ * igc_reset_hw_base - Reset hardware
+ * @hw: pointer to the HW structure
+ *
+ * This resets the hardware into a known state. This is a
+ * function pointer entry point called by the api module.
+ **/
+static s32 igc_reset_hw_base(struct e1000_hw *hw)
+{
+ u32 ctrl;
+ s32 ret_val;
+
+ /* Prevent the PCI-E bus from sticking if there is no TLP connection
+ * on the last TLP read/write transaction when MAC is reset.
+ */
+ ret_val = igc_disable_pcie_master(hw);
+ if (ret_val)
+ hw_dbg("PCI-E Master disable polling has failed.\n");
+
+ /* set the completion timeout for interface */
+ ret_val = igc_set_pcie_completion_timeout(hw);
+ if (ret_val)
+ hw_dbg("PCI-E Set completion timeout has failed.\n");
+
+ hw_dbg("Masking off all interrupts\n");
+ wr32(E1000_IMC, 0xffffffff);
+
+ wr32(E1000_RCTL, 0);
+ wr32(E1000_TCTL, E1000_TCTL_PSP);
+ wrfl();
+
+ usleep_range(10000, 20000);
+
+ ctrl = rd32(E1000_CTRL);
+
+ hw_dbg("Issuing a global reset to MAC\n");
+ wr32(E1000_CTRL, ctrl | E1000_CTRL_RST);
+
+ ret_val = igc_get_auto_rd_done(hw);
+ if (ret_val) {
+ /* When auto config read does not complete, do not
+ * return with an error. This can happen in situations
+ * where there is no eeprom and prevents getting link.
+ */
+ hw_dbg("Auto Read Done did not complete\n");
+ }
+
+ /* Clear any pending interrupt events. */
+ wr32(E1000_IMC, 0xffffffff);
+ rd32(E1000_ICR);
+
+ return ret_val;
+}
+
+/**
+ * igc_set_pcie_completion_timeout - set pci-e completion timeout
+ * @hw: pointer to the HW structure
+ *
+ * The defaults for 82575 and 82576 should be in the range of 50us to 50ms,
+ * however the hardware default for these parts is 500us to 1ms which is less
+ * than the 10ms recommended by the pci-e spec. To address this we need to
+ * increase the value to either 10ms to 200ms for capability version 1 config,
+ * or 16ms to 55ms for version 2.
+ **/
+static s32 igc_set_pcie_completion_timeout(struct e1000_hw *hw)
+{
+ u32 gcr = rd32(E1000_GCR);
+ s32 ret_val = 0;
+ u16 pcie_devctl2;
+
+ /* only take action if timeout value is defaulted to 0 */
+ if (gcr & E1000_GCR_CMPL_TMOUT_MASK)
+ goto out;
+
+ /* if capabilities version is type 1 we can write the
+ * timeout of 10ms to 200ms through the GCR register
+ */
+ if (!(gcr & E1000_GCR_CAP_VER2)) {
+ gcr |= E1000_GCR_CMPL_TMOUT_10ms;
+ goto out;
+ }
+
+ /* for version 2 capabilities we need to write the config space
+ * directly in order to set the completion timeout value for
+ * 16ms to 55ms
+ */
+ ret_val = igc_read_pcie_cap_reg(hw, PCIE_DEVICE_CONTROL2,
+ &pcie_devctl2);
+ if (ret_val)
+ goto out;
+
+ pcie_devctl2 |= PCIE_DEVICE_CONTROL2_16ms;
+
+ ret_val = igc_write_pcie_cap_reg(hw, PCIE_DEVICE_CONTROL2,
+ &pcie_devctl2);
+out:
+ /* disable completion timeout resend */
+ gcr &= ~E1000_GCR_CMPL_TMOUT_RESEND;
+
+ wr32(E1000_GCR, gcr);
+ return ret_val;
+}
diff --git a/drivers/net/ethernet/intel/igc/e1000_base.h b/drivers/net/ethernet/intel/igc/e1000_base.h
index 5c766fb7514b..210f1b5f6012 100644
--- a/drivers/net/ethernet/intel/igc/e1000_base.h
+++ b/drivers/net/ethernet/intel/igc/e1000_base.h
@@ -33,6 +33,8 @@ union e1000_adv_tx_desc {
#define E1000_ADVTXD_DCMD_TSE 0x80000000 /* TCP Seg enable */
#define E1000_ADVTXD_PAYLEN_SHIFT 14 /* Adv desc PAYLEN shift */
+#define E1000_RAR_ENTRIES 16
+
struct e1000_adv_data_desc {
__le64 buffer_addr; /* Address of the descriptor's data buffer */
union {
diff --git a/drivers/net/ethernet/intel/igc/e1000_defines.h b/drivers/net/ethernet/intel/igc/e1000_defines.h
index f39d93d17ba6..5613806742b1 100644
--- a/drivers/net/ethernet/intel/igc/e1000_defines.h
+++ b/drivers/net/ethernet/intel/igc/e1000_defines.h
@@ -30,6 +30,22 @@
#define E1000_PCI_PMCSR 0x44
#define E1000_PCI_PMCSR_D3 0x03
+/* Physical Func Reset Done Indication */
+#define E1000_CTRL_EXT_LINK_MODE_MASK 0x00C00000
+
+/* Number of 100 microseconds we wait for PCI Express master disable */
+#define MASTER_DISABLE_TIMEOUT 800
+/*Blocks new Master requests */
+#define E1000_CTRL_GIO_MASTER_DISABLE 0x00000004
+/* Status of Master requests. */
+#define E1000_STATUS_GIO_MASTER_ENABLE 0x00080000
+
+/* PCI Express Control */
+#define E1000_GCR_CMPL_TMOUT_MASK 0x0000F000
+#define E1000_GCR_CMPL_TMOUT_10ms 0x00001000
+#define E1000_GCR_CMPL_TMOUT_RESEND 0x00010000
+#define E1000_GCR_CAP_VER2 0x00040000
+
/* Receive Address
* Number of high/low register pairs in the RAR. The RAR (Receive Address
* Registers) holds the directed and multicast addresses that we monitor.
@@ -48,10 +64,26 @@
#define E1000_ERR_PARAM 4
#define E1000_ERR_MAC_INIT 5
#define E1000_ERR_RESET 9
+#define E1000_ERR_MASTER_REQUESTS_PENDING 10
+#define E1000_ERR_SWFW_SYNC 13
+
+/* Device Control */
+#define E1000_CTRL_RST 0x04000000 /* Global reset */
/* PBA constants */
#define E1000_PBA_34K 0x0022
+/* SW Semaphore Register */
+#define E1000_SWSM_SMBI 0x00000001 /* Driver Semaphore bit */
+#define E1000_SWSM_SWESMBI 0x00000002 /* FW Semaphore bit */
+
+/* NVM Control */
+#define E1000_EECD_PRES 0x00000100 /* NVM Present */
+
+/* Number of milliseconds for NVM auto read done after MAC reset. */
+#define AUTO_READ_DONE_TIMEOUT 10
+#define E1000_EECD_AUTO_RD 0x00000200 /* NVM Auto Read done */
+
/* Device Status */
#define E1000_STATUS_FD 0x00000001 /* Full duplex.0=half,1=full */
#define E1000_STATUS_LU 0x00000002 /* Link up.0=no,1=link */
@@ -135,6 +167,13 @@
#define E1000_CT_SHIFT 4
#define E1000_COLLISION_THRESHOLD 15
+/* Flow Control Constants */
+#define FLOW_CONTROL_ADDRESS_LOW 0x00C28001
+#define FLOW_CONTROL_ADDRESS_HIGH 0x00000100
+#define FLOW_CONTROL_TYPE 0x8808
+/* Enable XON frame transmission */
+#define E1000_FCRTL_XONE 0x80000000
+
/* Management Control */
#define E1000_MANC_RCV_TCO_EN 0x00020000 /* Receive TCO Packets Enabled */
diff --git a/drivers/net/ethernet/intel/igc/e1000_hw.h b/drivers/net/ethernet/intel/igc/e1000_hw.h
index 67fa4f696b98..debeadd61b45 100644
--- a/drivers/net/ethernet/intel/igc/e1000_hw.h
+++ b/drivers/net/ethernet/intel/igc/e1000_hw.h
@@ -6,6 +6,8 @@
#include <linux/types.h>
#include <linux/if_ether.h>
+#include <linux/netdevice.h>
+
#include "e1000_regs.h"
#include "e1000_defines.h"
#include "e1000_mac.h"
@@ -20,6 +22,16 @@ struct e1000_hw;
/* Function pointers for the MAC. */
struct e1000_mac_operations {
+ s32 (*check_for_link)(struct e1000_hw *hw);
+ s32 (*reset_hw)(struct e1000_hw *hw);
+ s32 (*init_hw)(struct e1000_hw *hw);
+ s32 (*setup_physical_interface)(struct e1000_hw *hw);
+ void (*rar_set)(struct e1000_hw *hw, u8 *address, u32 index);
+ s32 (*read_mac_addr)(struct e1000_hw *hw);
+ s32 (*get_speed_and_duplex)(struct e1000_hw *hw, u16 *speed,
+ u16 *duplex);
+ s32 (*acquire_swfw_sync)(struct e1000_hw *hw, u16 mask);
+ void (*release_swfw_sync)(struct e1000_hw *hw, u16 mask);
};
enum e1000_mac_type {
@@ -34,6 +46,12 @@ enum e1000_phy_type {
e1000_phy_i225,
};
+enum e1000_nvm_type {
+ e1000_nvm_unknown = 0,
+ e1000_nvm_flash_hw,
+ e1000_nvm_invm,
+};
+
enum e1000_bus_type {
e1000_bus_type_unknown = 0,
e1000_bus_type_pci_express,
@@ -56,6 +74,13 @@ enum e1000_bus_width {
e1000_bus_width_reserved
};
+struct e1000_info {
+ s32 (*get_invariants)(struct e1000_hw *hw);
+ struct e1000_mac_operations *mac_ops;
+ const struct e1000_phy_operations *phy_ops;
+ struct e1000_nvm_operations *nvm_ops;
+};
+
struct e1000_mac_info {
struct e1000_mac_operations ops;
@@ -91,6 +116,30 @@ struct e1000_mac_info {
bool get_link_status;
};
+struct e1000_nvm_operations {
+ s32 (*acquire)(struct e1000_hw *hw);
+ s32 (*read)(struct e1000_hw *hw, u16 offset, u16 i, u16 *data);
+ void (*release)(struct e1000_hw *hw);
+ s32 (*write)(struct e1000_hw *hw, u16 offset, u16 i, u16 *data);
+ s32 (*update)(struct e1000_hw *hw);
+ s32 (*validate)(struct e1000_hw *hw);
+ s32 (*valid_led_default)(struct e1000_hw *hw, u16 *data);
+};
+
+struct e1000_nvm_info {
+ struct e1000_nvm_operations ops;
+ enum e1000_nvm_type type;
+
+ u32 flash_bank_size;
+ u32 flash_base_addr;
+
+ u16 word_size;
+ u16 delay_usec;
+ u16 address_bits;
+ u16 opcode_bits;
+ u16 page_size;
+};
+
struct e1000_bus_info {
enum e1000_bus_type type;
enum e1000_bus_speed speed;
@@ -100,6 +149,32 @@ struct e1000_bus_info {
u16 pci_cmd_word;
};
+enum e1000_fc_mode {
+ e1000_fc_none = 0,
+ e1000_fc_rx_pause,
+ e1000_fc_tx_pause,
+ e1000_fc_full,
+ e1000_fc_default = 0xFF
+};
+
+struct e1000_fc_info {
+ u32 high_water; /* Flow control high-water mark */
+ u32 low_water; /* Flow control low-water mark */
+ u16 pause_time; /* Flow control pause timer */
+ bool send_xon; /* Flow control send XON */
+ bool strict_ieee; /* Strict IEEE mode */
+ enum e1000_fc_mode current_mode; /* Type of flow control */
+ enum e1000_fc_mode requested_mode;
+};
+
+struct e1000_dev_spec_base {
+ bool global_device_reset;
+ bool eee_disable;
+ bool clear_semaphore_once;
+ bool module_plugged;
+ u8 media_port;
+};
+
struct e1000_hw {
void *back;
@@ -108,9 +183,15 @@ struct e1000_hw {
unsigned long io_base;
struct e1000_mac_info mac;
+ struct e1000_fc_info fc;
+ struct e1000_nvm_info nvm;
struct e1000_bus_info bus;
+ union {
+ struct e1000_dev_spec_base _base;
+ } dev_spec;
+
u16 device_id;
u16 subsystem_vendor_id;
u16 subsystem_device_id;
@@ -203,6 +284,10 @@ struct e1000_hw_stats {
u64 b2ogprc;
};
+struct net_device *igc_get_hw_dev(struct e1000_hw *hw);
+#define hw_dbg(format, arg...) \
+ netdev_dbg(igc_get_hw_dev(hw), format, ##arg)
+
/* These functions must be implemented by drivers */
s32 igc_read_pcie_cap_reg(struct e1000_hw *hw, u32 reg, u16 *value);
s32 igc_write_pcie_cap_reg(struct e1000_hw *hw, u32 reg, u16 *value);
diff --git a/drivers/net/ethernet/intel/igc/e1000_i225.c b/drivers/net/ethernet/intel/igc/e1000_i225.c
new file mode 100644
index 000000000000..11d797c77619
--- /dev/null
+++ b/drivers/net/ethernet/intel/igc/e1000_i225.c
@@ -0,0 +1,141 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright (c) 2018 Intel Corporation */
+
+#include <linux/delay.h>
+
+#include "e1000_hw.h"
+
+/**
+ * igc_get_hw_semaphore_i225 - Acquire hardware semaphore
+ * @hw: pointer to the HW structure
+ *
+ * Acquire the HW semaphore to access the PHY or NVM
+ */
+static s32 igc_get_hw_semaphore_i225(struct e1000_hw *hw)
+{
+ u32 swsm;
+ s32 timeout = hw->nvm.word_size + 1;
+ s32 i = 0;
+
+ /* Get the SW semaphore */
+ while (i < timeout) {
+ swsm = rd32(E1000_SWSM);
+ if (!(swsm & E1000_SWSM_SMBI))
+ break;
+
+ usleep_range(500, 600);
+ i++;
+ }
+
+ if (i == timeout) {
+ /* In rare circumstances, the SW semaphore may already be held
+ * unintentionally. Clear the semaphore once before giving up.
+ */
+ if (hw->dev_spec._base.clear_semaphore_once) {
+ hw->dev_spec._base.clear_semaphore_once = false;
+ igc_put_hw_semaphore(hw);
+ for (i = 0; i < timeout; i++) {
+ swsm = rd32(E1000_SWSM);
+ if (!(swsm & E1000_SWSM_SMBI))
+ break;
+
+ usleep_range(500, 600);
+ }
+ }
+
+ /* If we do not have the semaphore here, we have to give up. */
+ if (i == timeout) {
+ hw_dbg("Driver can't access device - SMBI bit is set.\n");
+ return -E1000_ERR_NVM;
+ }
+ }
+
+ /* Get the FW semaphore. */
+ for (i = 0; i < timeout; i++) {
+ swsm = rd32(E1000_SWSM);
+ wr32(E1000_SWSM, swsm | E1000_SWSM_SWESMBI);
+
+ /* Semaphore acquired if bit latched */
+ if (rd32(E1000_SWSM) & E1000_SWSM_SWESMBI)
+ break;
+
+ usleep_range(500, 600);
+ }
+
+ if (i == timeout) {
+ /* Release semaphores */
+ igc_put_hw_semaphore(hw);
+ hw_dbg("Driver can't access the NVM\n");
+ return -E1000_ERR_NVM;
+ }
+
+ return 0;
+}
+
+/**
+ * igc_acquire_swfw_sync_i225 - Acquire SW/FW semaphore
+ * @hw: pointer to the HW structure
+ * @mask: specifies which semaphore to acquire
+ *
+ * Acquire the SW/FW semaphore to access the PHY or NVM. The mask
+ * will also specify which port we're acquiring the lock for.
+ **/
+s32 igc_acquire_swfw_sync_i225(struct e1000_hw *hw, u16 mask)
+{
+ u32 swfw_sync;
+ u32 swmask = mask;
+ u32 fwmask = mask << 16;
+ s32 ret_val = 0;
+ s32 i = 0, timeout = 200; /* FIXME: find real value to use here */
+
+ while (i < timeout) {
+ if (igc_get_hw_semaphore_i225(hw)) {
+ ret_val = -E1000_ERR_SWFW_SYNC;
+ goto out;
+ }
+
+ swfw_sync = rd32(E1000_SW_FW_SYNC);
+ if (!(swfw_sync & (fwmask | swmask)))
+ break;
+
+ /* Firmware currently using resource (fwmask) */
+ igc_put_hw_semaphore(hw);
+ mdelay(5);
+ i++;
+ }
+
+ if (i == timeout) {
+ hw_dbg("Driver can't access resource, SW_FW_SYNC timeout.\n");
+ ret_val = -E1000_ERR_SWFW_SYNC;
+ goto out;
+ }
+
+ swfw_sync |= swmask;
+ wr32(E1000_SW_FW_SYNC, swfw_sync);
+
+ igc_put_hw_semaphore(hw);
+out:
+ return ret_val;
+}
+
+/**
+ * igc_release_swfw_sync_i225 - Release SW/FW semaphore
+ * @hw: pointer to the HW structure
+ * @mask: specifies which semaphore to acquire
+ *
+ * Release the SW/FW semaphore used to access the PHY or NVM. The mask
+ * will also specify which port we're releasing the lock for.
+ **/
+void igc_release_swfw_sync_i225(struct e1000_hw *hw, u16 mask)
+{
+ u32 swfw_sync;
+
+ while (igc_get_hw_semaphore_i225(hw))
+ ; /* Empty */
+
+ swfw_sync = rd32(E1000_SW_FW_SYNC);
+ swfw_sync &= ~mask;
+ wr32(E1000_SW_FW_SYNC, swfw_sync);
+
+ igc_put_hw_semaphore(hw);
+}
diff --git a/drivers/net/ethernet/intel/igc/e1000_mac.c b/drivers/net/ethernet/intel/igc/e1000_mac.c
index c38435bb8a8c..27e478a9854c 100644
--- a/drivers/net/ethernet/intel/igc/e1000_mac.c
+++ b/drivers/net/ethernet/intel/igc/e1000_mac.c
@@ -2,8 +2,15 @@
/* Copyright (c) 2018 Intel Corporation */
#include <linux/pci.h>
+#include <linux/delay.h>
+
+#include "e1000_mac.h"
#include "e1000_hw.h"
+/* forward declaration */
+static s32 igc_set_default_fc(struct e1000_hw *hw);
+static s32 igc_set_fc_watermarks(struct e1000_hw *hw);
+
/**
* igc_get_bus_info_pcie - Get PCIe bus information
* @hw: pointer to the HW structure
@@ -49,3 +56,316 @@ s32 igc_get_bus_info_pcie(struct e1000_hw *hw)
return 0;
}
+
+/**
+ * igc_disable_pcie_master - Disables PCI-express master access
+ * @hw: pointer to the HW structure
+ *
+ * Returns 0 (0) if successful, else returns -10
+ * (-E1000_ERR_MASTER_REQUESTS_PENDING) if master disable bit has not caused
+ * the master requests to be disabled.
+ *
+ * Disables PCI-Express master access and verifies there are no pending
+ * requests.
+ **/
+s32 igc_disable_pcie_master(struct e1000_hw *hw)
+{
+ u32 ctrl;
+ s32 timeout = MASTER_DISABLE_TIMEOUT;
+ s32 ret_val = 0;
+
+ if (hw->bus.type != e1000_bus_type_pci_express)
+ goto out;
+
+ ctrl = rd32(E1000_CTRL);
+ ctrl |= E1000_CTRL_GIO_MASTER_DISABLE;
+ wr32(E1000_CTRL, ctrl);
+
+ while (timeout) {
+ if (!(rd32(E1000_STATUS) &
+ E1000_STATUS_GIO_MASTER_ENABLE))
+ break;
+ usleep_range(2000, 3000);
+ timeout--;
+ }
+
+ if (!timeout) {
+ hw_dbg("Master requests are pending.\n");
+ ret_val = -E1000_ERR_MASTER_REQUESTS_PENDING;
+ goto out;
+ }
+
+out:
+ return ret_val;
+}
+
+/**
+ * igc_init_rx_addrs - Initialize receive address's
+ * @hw: pointer to the HW structure
+ * @rar_count: receive address registers
+ *
+ * Setups the receive address registers by setting the base receive address
+ * register to the devices MAC address and clearing all the other receive
+ * address registers to 0.
+ **/
+void igc_init_rx_addrs(struct e1000_hw *hw, u16 rar_count)
+{
+ u32 i;
+ u8 mac_addr[ETH_ALEN] = {0};
+
+ /* Setup the receive address */
+ hw_dbg("Programming MAC Address into RAR[0]\n");
+
+ hw->mac.ops.rar_set(hw, hw->mac.addr, 0);
+
+ /* Zero out the other (rar_entry_count - 1) receive addresses */
+ hw_dbg("Clearing RAR[1-%u]\n", rar_count - 1);
+ for (i = 1; i < rar_count; i++)
+ hw->mac.ops.rar_set(hw, mac_addr, i);
+}
+
+/**
+ * igc_setup_link - Setup flow control and link settings
+ * @hw: pointer to the HW structure
+ *
+ * Determines which flow control settings to use, then configures flow
+ * control. Calls the appropriate media-specific link configuration
+ * function. Assuming the adapter has a valid link partner, a valid link
+ * should be established. Assumes the hardware has previously been reset
+ * and the transmitter and receiver are not enabled.
+ **/
+s32 igc_setup_link(struct e1000_hw *hw)
+{
+ s32 ret_val = 0;
+
+ /* In the case of the phy reset being blocked, we already have a link.
+ * We do not need to set it up again.
+ */
+
+ /* If requested flow control is set to default, set flow control
+ * based on the EEPROM flow control settings.
+ */
+ if (hw->fc.requested_mode == e1000_fc_default) {
+ ret_val = igc_set_default_fc(hw);
+ if (ret_val)
+ goto out;
+ }
+
+ /* We want to save off the original Flow Control configuration just
+ * in case we get disconnected and then reconnected into a different
+ * hub or switch with different Flow Control capabilities.
+ */
+ hw->fc.current_mode = hw->fc.requested_mode;
+
+ hw_dbg("After fix-ups FlowControl is now = %x\n", hw->fc.current_mode);
+
+ /* Call the necessary media_type subroutine to configure the link. */
+ ret_val = hw->mac.ops.setup_physical_interface(hw);
+ if (ret_val)
+ goto out;
+
+ /* Initialize the flow control address, type, and PAUSE timer
+ * registers to their default values. This is done even if flow
+ * control is disabled, because it does not hurt anything to
+ * initialize these registers.
+ */
+ hw_dbg("Initializing the Flow Control address, type and timer regs\n");
+ wr32(E1000_FCT, FLOW_CONTROL_TYPE);
+ wr32(E1000_FCAH, FLOW_CONTROL_ADDRESS_HIGH);
+ wr32(E1000_FCAL, FLOW_CONTROL_ADDRESS_LOW);
+
+ wr32(E1000_FCTTV, hw->fc.pause_time);
+
+ ret_val = igc_set_fc_watermarks(hw);
+
+out:
+
+ return ret_val;
+}
+
+/**
+ * igc_set_default_fc - Set flow control default values
+ * @hw: pointer to the HW structure
+ *
+ * Read the EEPROM for the default values for flow control and store the
+ * values.
+ **/
+static s32 igc_set_default_fc(struct e1000_hw *hw)
+{
+ return 0;
+}
+
+/**
+ * igc_set_fc_watermarks - Set flow control high/low watermarks
+ * @hw: pointer to the HW structure
+ *
+ * Sets the flow control high/low threshold (watermark) registers. If
+ * flow control XON frame transmission is enabled, then set XON frame
+ * tansmission as well.
+ **/
+static s32 igc_set_fc_watermarks(struct e1000_hw *hw)
+{
+ s32 ret_val = 0;
+ u32 fcrtl = 0, fcrth = 0;
+
+ /* Set the flow control receive threshold registers. Normally,
+ * these registers will be set to a default threshold that may be
+ * adjusted later by the driver's runtime code. However, if the
+ * ability to transmit pause frames is not enabled, then these
+ * registers will be set to 0.
+ */
+ if (hw->fc.current_mode & e1000_fc_tx_pause) {
+ /* We need to set up the Receive Threshold high and low water
+ * marks as well as (optionally) enabling the transmission of
+ * XON frames.
+ */
+ fcrtl = hw->fc.low_water;
+ if (hw->fc.send_xon)
+ fcrtl |= E1000_FCRTL_XONE;
+
+ fcrth = hw->fc.high_water;
+ }
+ wr32(E1000_FCRTL, fcrtl);
+ wr32(E1000_FCRTH, fcrth);
+
+ return ret_val;
+}
+
+/**
+ * igc_clear_hw_cntrs_base - Clear base hardware counters
+ * @hw: pointer to the HW structure
+ *
+ * Clears the base hardware counters by reading the counter registers.
+ **/
+void igc_clear_hw_cntrs_base(struct e1000_hw *hw)
+{
+ rd32(E1000_CRCERRS);
+ rd32(E1000_SYMERRS);
+ rd32(E1000_MPC);
+ rd32(E1000_SCC);
+ rd32(E1000_ECOL);
+ rd32(E1000_MCC);
+ rd32(E1000_LATECOL);
+ rd32(E1000_COLC);
+ rd32(E1000_DC);
+ rd32(E1000_SEC);
+ rd32(E1000_RLEC);
+ rd32(E1000_XONRXC);
+ rd32(E1000_XONTXC);
+ rd32(E1000_XOFFRXC);
+ rd32(E1000_XOFFTXC);
+ rd32(E1000_FCRUC);
+ rd32(E1000_GPRC);
+ rd32(E1000_BPRC);
+ rd32(E1000_MPRC);
+ rd32(E1000_GPTC);
+ rd32(E1000_GORCL);
+ rd32(E1000_GORCH);
+ rd32(E1000_GOTCL);
+ rd32(E1000_GOTCH);
+ rd32(E1000_RNBC);
+ rd32(E1000_RUC);
+ rd32(E1000_RFC);
+ rd32(E1000_ROC);
+ rd32(E1000_RJC);
+ rd32(E1000_TORL);
+ rd32(E1000_TORH);
+ rd32(E1000_TOTL);
+ rd32(E1000_TOTH);
+ rd32(E1000_TPR);
+ rd32(E1000_TPT);
+ rd32(E1000_MPTC);
+ rd32(E1000_BPTC);
+
+ rd32(E1000_PRC64);
+ rd32(E1000_PRC127);
+ rd32(E1000_PRC255);
+ rd32(E1000_PRC511);
+ rd32(E1000_PRC1023);
+ rd32(E1000_PRC1522);
+ rd32(E1000_PTC64);
+ rd32(E1000_PTC127);
+ rd32(E1000_PTC255);
+ rd32(E1000_PTC511);
+ rd32(E1000_PTC1023);
+ rd32(E1000_PTC1522);
+
+ rd32(E1000_ALGNERRC);
+ rd32(E1000_RXERRC);
+ rd32(E1000_TNCRS);
+ rd32(E1000_CEXTERR);
+ rd32(E1000_TSCTC);
+ rd32(E1000_TSCTFC);
+
+ rd32(E1000_MGTPRC);
+ rd32(E1000_MGTPDC);
+ rd32(E1000_MGTPTC);
+
+ rd32(E1000_IAC);
+ rd32(E1000_ICRXOC);
+
+ rd32(E1000_ICRXPTC);
+ rd32(E1000_ICRXATC);
+ rd32(E1000_ICTXPTC);
+ rd32(E1000_ICTXATC);
+ rd32(E1000_ICTXQEC);
+ rd32(E1000_ICTXQMTC);
+ rd32(E1000_ICRXDMTC);
+
+ rd32(E1000_CBTMPC);
+ rd32(E1000_HTDPMC);
+ rd32(E1000_CBRMPC);
+ rd32(E1000_RPTHC);
+ rd32(E1000_HGPTC);
+ rd32(E1000_HTCBDPC);
+ rd32(E1000_HGORCL);
+ rd32(E1000_HGORCH);
+ rd32(E1000_HGOTCL);
+ rd32(E1000_HGOTCH);
+ rd32(E1000_LENERRS);
+}
+
+/**
+ * igc_get_auto_rd_done - Check for auto read completion
+ * @hw: pointer to the HW structure
+ *
+ * Check EEPROM for Auto Read done bit.
+ **/
+s32 igc_get_auto_rd_done(struct e1000_hw *hw)
+{
+ s32 i = 0;
+ s32 ret_val = 0;
+
+ while (i < AUTO_READ_DONE_TIMEOUT) {
+ if (rd32(E1000_EECD) & E1000_EECD_AUTO_RD)
+ break;
+ usleep_range(1000, 2000);
+ i++;
+ }
+
+ if (i == AUTO_READ_DONE_TIMEOUT) {
+ hw_dbg("Auto read by HW from NVM has not completed.\n");
+ ret_val = -E1000_ERR_RESET;
+ goto out;
+ }
+
+out:
+ return ret_val;
+}
+
+/**
+ * igc_put_hw_semaphore - Release hardware semaphore
+ * @hw: pointer to the HW structure
+ *
+ * Release hardware semaphore used to access the PHY or NVM
+ **/
+void igc_put_hw_semaphore(struct e1000_hw *hw)
+{
+ u32 swsm;
+
+ swsm = rd32(E1000_SWSM);
+
+ swsm &= ~(E1000_SWSM_SMBI | E1000_SWSM_SWESMBI);
+
+ wr32(E1000_SWSM, swsm);
+}
diff --git a/drivers/net/ethernet/intel/igc/e1000_mac.h b/drivers/net/ethernet/intel/igc/e1000_mac.h
index afb0f7b28222..2f8dbf17800a 100644
--- a/drivers/net/ethernet/intel/igc/e1000_mac.h
+++ b/drivers/net/ethernet/intel/igc/e1000_mac.h
@@ -4,10 +4,21 @@
#ifndef _E1000_MAC_H_
#define _E1000_MAC_H_
+#include "e1000_hw.h"
+#include "e1000_defines.h"
+
#ifndef E1000_REMOVED
#define E1000_REMOVED(a) (0)
#endif /* E1000_REMOVED */
-s32 igc_get_bus_info_pcie(struct e1000_hw *hw);
+/* forward declaration */
+s32 igc_disable_pcie_master(struct e1000_hw *hw);
+void igc_init_rx_addrs(struct e1000_hw *hw, u16 rar_count);
+s32 igc_setup_link(struct e1000_hw *hw);
+void igc_clear_hw_cntrs_base(struct e1000_hw *hw);
+s32 igc_get_auto_rd_done(struct e1000_hw *hw);
+void igc_put_hw_semaphore(struct e1000_hw *hw);
+
+s32 igc_get_bus_info_pcie(struct e1000_hw *hw);
#endif
diff --git a/drivers/net/ethernet/intel/igc/e1000_regs.h b/drivers/net/ethernet/intel/igc/e1000_regs.h
index dcc4d89c9933..66d5c757dae8 100644
--- a/drivers/net/ethernet/intel/igc/e1000_regs.h
+++ b/drivers/net/ethernet/intel/igc/e1000_regs.h
@@ -7,6 +7,7 @@
/* General Register Descriptions */
#define E1000_CTRL 0x00000 /* Device Control - RW */
#define E1000_STATUS 0x00008 /* Device Status - RO */
+#define E1000_EECD 0x00010 /* EEPROM/Flash Control - RW */
#define E1000_CTRL_EXT 0x00018 /* Extended Device Control - RW */
#define E1000_MDIC 0x00020 /* MDI Control - RW */
#define E1000_MDICNFG 0x00E04 /* MDC/MDIO Configuration - RW */
@@ -75,6 +76,30 @@
#define E1000_IVAR_MISC 0x01740 /* IVAR for "other" causes - RW */
#define E1000_GPIE 0x01514 /* General Purpose Intr Enable - RW */
+/* Interrupt Cause Rx Packet Timer Expire Count */
+#define E1000_ICRXPTC 0x04104
+/* Interrupt Cause Rx Absolute Timer Expire Count */
+#define E1000_ICRXATC 0x04108
+/* Interrupt Cause Tx Packet Timer Expire Count */
+#define E1000_ICTXPTC 0x0410C
+/* Interrupt Cause Tx Absolute Timer Expire Count */
+#define E1000_ICTXATC 0x04110
+/* Interrupt Cause Tx Queue Empty Count */
+#define E1000_ICTXQEC 0x04118
+/* Interrupt Cause Tx Queue Minimum Threshold Count */
+#define E1000_ICTXQMTC 0x0411C
+/* Interrupt Cause Rx Descriptor Minimum Threshold Count */
+#define E1000_ICRXDMTC 0x04120
+/* Interrupt Cause Receiver Overrun Count */
+#define E1000_ICRXOC 0x04124
+
+#define E1000_CBTMPC 0x0402C /* Circuit Breaker TX Packet Count */
+#define E1000_HTDPMC 0x0403C /* Host Transmit Discarded Packets */
+#define E1000_CBRMPC 0x040FC /* Circuit Breaker RX Packet Count */
+#define E1000_RPTHC 0x04104 /* Rx Packets To Host */
+#define E1000_HGPTC 0x04118 /* Host Good Packets TX Count */
+#define E1000_HTCBDPC 0x04124 /* Host TX Circ.Breaker Drop Count */
+
/* MSI-X Table Register Descriptions */
#define E1000_PBACL 0x05B68 /* MSIx PBA Clear - R/W 1 to clear */
@@ -92,6 +117,8 @@
#define E1000_RXCSUM 0x05000 /* Rx Checksum Control - RW */
#define E1000_RLPML 0x05004 /* Rx Long Packet Max Length */
#define E1000_RFCTL 0x05008 /* Receive Filter Control*/
+#define E1000_MTA 0x05200 /* Multicast Table Array - RW Array */
+#define E1000_UTA 0x0A000 /* Unicast Table Array - RW */
#define E1000_RAL(_n) (0x05400 + ((_n) * 0x08))
#define E1000_RAH(_n) (0x05404 + ((_n) * 0x08))
#define E1000_VLAPQF 0x055B0 /* VLAN Priority Queuue - RW */
diff --git a/drivers/net/ethernet/intel/igc/igc_main.c b/drivers/net/ethernet/intel/igc/igc_main.c
index 67826041eb3c..9a99c7d68796 100644
--- a/drivers/net/ethernet/intel/igc/igc_main.c
+++ b/drivers/net/ethernet/intel/igc/igc_main.c
@@ -86,6 +86,14 @@ enum latency_range {
void igc_reset(struct igc_adapter *adapter)
{
+ struct pci_dev *pdev = adapter->pdev;
+ struct e1000_hw *hw = &adapter->hw;
+
+ hw->mac.ops.reset_hw(hw);
+
+ if (hw->mac.ops.init_hw(hw))
+ dev_err(&pdev->dev, "Hardware Error\n");
+
if (!netif_running(adapter->netdev))
igc_power_down_link(adapter);
}
@@ -3621,6 +3629,19 @@ static void igc_nfc_filter_exit(struct igc_adapter *adapter)
}
/**
+ * igc_get_hw_dev - return device
+ * @hw: pointer to hardware structure
+ *
+ * used by hardware layer to print debugging information
+ **/
+struct net_device *igc_get_hw_dev(struct e1000_hw *hw)
+{
+ struct igc_adapter *adapter = hw->back;
+
+ return adapter->netdev;
+}
+
+/**
* igc_init_module - Driver Registration Routine
*
* igc_init_module is the first routine called when the driver is
--
2.11.0
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