1 /*******************************************************************************
3 Copyright (c) 2001-2014, Intel Corporation
6 Redistribution and use in source and binary forms, with or without
7 modification, are permitted provided that the following conditions are met:
9 1. Redistributions of source code must retain the above copyright notice,
10 this list of conditions and the following disclaimer.
12 2. Redistributions in binary form must reproduce the above copyright
13 notice, this list of conditions and the following disclaimer in the
14 documentation and/or other materials provided with the distribution.
16 3. Neither the name of the Intel Corporation nor the names of its
17 contributors may be used to endorse or promote products derived from
18 this software without specific prior written permission.
20 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
21 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
24 LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25 CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26 SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
30 POSSIBILITY OF SUCH DAMAGE.
32 ***************************************************************************/
35 * 82542 Gigabit Ethernet Controller
38 #include "e1000_api.h"
40 STATIC s32 e1000_init_phy_params_82542(struct e1000_hw *hw);
41 STATIC s32 e1000_init_nvm_params_82542(struct e1000_hw *hw);
42 STATIC s32 e1000_init_mac_params_82542(struct e1000_hw *hw);
43 STATIC s32 e1000_get_bus_info_82542(struct e1000_hw *hw);
44 STATIC s32 e1000_reset_hw_82542(struct e1000_hw *hw);
45 STATIC s32 e1000_init_hw_82542(struct e1000_hw *hw);
46 STATIC s32 e1000_setup_link_82542(struct e1000_hw *hw);
47 STATIC s32 e1000_led_on_82542(struct e1000_hw *hw);
48 STATIC s32 e1000_led_off_82542(struct e1000_hw *hw);
49 STATIC void e1000_rar_set_82542(struct e1000_hw *hw, u8 *addr, u32 index);
50 STATIC void e1000_clear_hw_cntrs_82542(struct e1000_hw *hw);
51 STATIC s32 e1000_read_mac_addr_82542(struct e1000_hw *hw);
54 * e1000_init_phy_params_82542 - Init PHY func ptrs.
55 * @hw: pointer to the HW structure
57 STATIC s32 e1000_init_phy_params_82542(struct e1000_hw *hw)
59 struct e1000_phy_info *phy = &hw->phy;
60 s32 ret_val = E1000_SUCCESS;
62 DEBUGFUNC("e1000_init_phy_params_82542");
64 phy->type = e1000_phy_none;
70 * e1000_init_nvm_params_82542 - Init NVM func ptrs.
71 * @hw: pointer to the HW structure
73 STATIC s32 e1000_init_nvm_params_82542(struct e1000_hw *hw)
75 struct e1000_nvm_info *nvm = &hw->nvm;
77 DEBUGFUNC("e1000_init_nvm_params_82542");
79 nvm->address_bits = 6;
82 nvm->type = e1000_nvm_eeprom_microwire;
85 /* Function Pointers */
86 nvm->ops.read = e1000_read_nvm_microwire;
87 nvm->ops.release = e1000_stop_nvm;
88 nvm->ops.write = e1000_write_nvm_microwire;
89 nvm->ops.update = e1000_update_nvm_checksum_generic;
90 nvm->ops.validate = e1000_validate_nvm_checksum_generic;
96 * e1000_init_mac_params_82542 - Init MAC func ptrs.
97 * @hw: pointer to the HW structure
99 STATIC s32 e1000_init_mac_params_82542(struct e1000_hw *hw)
101 struct e1000_mac_info *mac = &hw->mac;
103 DEBUGFUNC("e1000_init_mac_params_82542");
106 hw->phy.media_type = e1000_media_type_fiber;
108 /* Set mta register count */
109 mac->mta_reg_count = 128;
110 /* Set rar entry count */
111 mac->rar_entry_count = E1000_RAR_ENTRIES;
113 /* Function pointers */
115 /* bus type/speed/width */
116 mac->ops.get_bus_info = e1000_get_bus_info_82542;
118 mac->ops.set_lan_id = e1000_set_lan_id_multi_port_pci;
120 mac->ops.reset_hw = e1000_reset_hw_82542;
121 /* hw initialization */
122 mac->ops.init_hw = e1000_init_hw_82542;
124 mac->ops.setup_link = e1000_setup_link_82542;
125 /* phy/fiber/serdes setup */
126 mac->ops.setup_physical_interface =
127 e1000_setup_fiber_serdes_link_generic;
129 mac->ops.check_for_link = e1000_check_for_fiber_link_generic;
130 /* multicast address update */
131 mac->ops.update_mc_addr_list = e1000_update_mc_addr_list_generic;
133 mac->ops.write_vfta = e1000_write_vfta_generic;
135 mac->ops.clear_vfta = e1000_clear_vfta_generic;
136 /* read mac address */
137 mac->ops.read_mac_addr = e1000_read_mac_addr_82542;
139 mac->ops.rar_set = e1000_rar_set_82542;
140 /* turn on/off LED */
141 mac->ops.led_on = e1000_led_on_82542;
142 mac->ops.led_off = e1000_led_off_82542;
143 /* clear hardware counters */
144 mac->ops.clear_hw_cntrs = e1000_clear_hw_cntrs_82542;
146 mac->ops.get_link_up_info =
147 e1000_get_speed_and_duplex_fiber_serdes_generic;
149 return E1000_SUCCESS;
153 * e1000_init_function_pointers_82542 - Init func ptrs.
154 * @hw: pointer to the HW structure
156 * Called to initialize all function pointers and parameters.
158 void e1000_init_function_pointers_82542(struct e1000_hw *hw)
160 DEBUGFUNC("e1000_init_function_pointers_82542");
162 hw->mac.ops.init_params = e1000_init_mac_params_82542;
163 hw->nvm.ops.init_params = e1000_init_nvm_params_82542;
164 hw->phy.ops.init_params = e1000_init_phy_params_82542;
168 * e1000_get_bus_info_82542 - Obtain bus information for adapter
169 * @hw: pointer to the HW structure
171 * This will obtain information about the HW bus for which the
172 * adapter is attached and stores it in the hw structure.
174 STATIC s32 e1000_get_bus_info_82542(struct e1000_hw *hw)
176 DEBUGFUNC("e1000_get_bus_info_82542");
178 hw->bus.type = e1000_bus_type_pci;
179 hw->bus.speed = e1000_bus_speed_unknown;
180 hw->bus.width = e1000_bus_width_unknown;
182 return E1000_SUCCESS;
186 * e1000_reset_hw_82542 - Reset hardware
187 * @hw: pointer to the HW structure
189 * This resets the hardware into a known state.
191 STATIC s32 e1000_reset_hw_82542(struct e1000_hw *hw)
193 struct e1000_bus_info *bus = &hw->bus;
194 s32 ret_val = E1000_SUCCESS;
197 DEBUGFUNC("e1000_reset_hw_82542");
199 if (hw->revision_id == E1000_REVISION_2) {
200 DEBUGOUT("Disabling MWI on 82542 rev 2\n");
201 e1000_pci_clear_mwi(hw);
204 DEBUGOUT("Masking off all interrupts\n");
205 E1000_WRITE_REG(hw, E1000_IMC, 0xffffffff);
207 E1000_WRITE_REG(hw, E1000_RCTL, 0);
208 E1000_WRITE_REG(hw, E1000_TCTL, E1000_TCTL_PSP);
209 E1000_WRITE_FLUSH(hw);
212 * Delay to allow any outstanding PCI transactions to complete before
213 * resetting the device
217 ctrl = E1000_READ_REG(hw, E1000_CTRL);
219 DEBUGOUT("Issuing a global reset to 82542/82543 MAC\n");
220 E1000_WRITE_REG(hw, E1000_CTRL, ctrl | E1000_CTRL_RST);
222 hw->nvm.ops.reload(hw);
225 E1000_WRITE_REG(hw, E1000_IMC, 0xffffffff);
226 E1000_READ_REG(hw, E1000_ICR);
228 if (hw->revision_id == E1000_REVISION_2) {
229 if (bus->pci_cmd_word & CMD_MEM_WRT_INVALIDATE)
230 e1000_pci_set_mwi(hw);
237 * e1000_init_hw_82542 - Initialize hardware
238 * @hw: pointer to the HW structure
240 * This inits the hardware readying it for operation.
242 STATIC s32 e1000_init_hw_82542(struct e1000_hw *hw)
244 struct e1000_mac_info *mac = &hw->mac;
245 struct e1000_dev_spec_82542 *dev_spec = &hw->dev_spec._82542;
246 s32 ret_val = E1000_SUCCESS;
250 DEBUGFUNC("e1000_init_hw_82542");
252 /* Disabling VLAN filtering */
253 E1000_WRITE_REG(hw, E1000_VET, 0);
254 mac->ops.clear_vfta(hw);
256 /* For 82542 (rev 2.0), disable MWI and put the receiver into reset */
257 if (hw->revision_id == E1000_REVISION_2) {
258 DEBUGOUT("Disabling MWI on 82542 rev 2.0\n");
259 e1000_pci_clear_mwi(hw);
260 E1000_WRITE_REG(hw, E1000_RCTL, E1000_RCTL_RST);
261 E1000_WRITE_FLUSH(hw);
265 /* Setup the receive address. */
266 e1000_init_rx_addrs_generic(hw, mac->rar_entry_count);
268 /* For 82542 (rev 2.0), take the receiver out of reset and enable MWI */
269 if (hw->revision_id == E1000_REVISION_2) {
270 E1000_WRITE_REG(hw, E1000_RCTL, 0);
271 E1000_WRITE_FLUSH(hw);
273 if (hw->bus.pci_cmd_word & CMD_MEM_WRT_INVALIDATE)
274 e1000_pci_set_mwi(hw);
277 /* Zero out the Multicast HASH table */
278 DEBUGOUT("Zeroing the MTA\n");
279 for (i = 0; i < mac->mta_reg_count; i++)
280 E1000_WRITE_REG_ARRAY(hw, E1000_MTA, i, 0);
283 * Set the PCI priority bit correctly in the CTRL register. This
284 * determines if the adapter gives priority to receives, or if it
285 * gives equal priority to transmits and receives.
287 if (dev_spec->dma_fairness) {
288 ctrl = E1000_READ_REG(hw, E1000_CTRL);
289 E1000_WRITE_REG(hw, E1000_CTRL, ctrl | E1000_CTRL_PRIOR);
292 /* Setup link and flow control */
293 ret_val = e1000_setup_link_82542(hw);
296 * Clear all of the statistics registers (clear on read). It is
297 * important that we do this after we have tried to establish link
298 * because the symbol error count will increment wildly if there
301 e1000_clear_hw_cntrs_82542(hw);
307 * e1000_setup_link_82542 - Setup flow control and link settings
308 * @hw: pointer to the HW structure
310 * Determines which flow control settings to use, then configures flow
311 * control. Calls the appropriate media-specific link configuration
312 * function. Assuming the adapter has a valid link partner, a valid link
313 * should be established. Assumes the hardware has previously been reset
314 * and the transmitter and receiver are not enabled.
316 STATIC s32 e1000_setup_link_82542(struct e1000_hw *hw)
318 struct e1000_mac_info *mac = &hw->mac;
321 DEBUGFUNC("e1000_setup_link_82542");
323 ret_val = e1000_set_default_fc_generic(hw);
327 hw->fc.requested_mode &= ~e1000_fc_tx_pause;
329 if (mac->report_tx_early)
330 hw->fc.requested_mode &= ~e1000_fc_rx_pause;
333 * Save off the requested flow control mode for use later. Depending
334 * on the link partner's capabilities, we may or may not use this mode.
336 hw->fc.current_mode = hw->fc.requested_mode;
338 DEBUGOUT1("After fix-ups FlowControl is now = %x\n",
339 hw->fc.current_mode);
341 /* Call the necessary subroutine to configure the link. */
342 ret_val = mac->ops.setup_physical_interface(hw);
347 * Initialize the flow control address, type, and PAUSE timer
348 * registers to their default values. This is done even if flow
349 * control is disabled, because it does not hurt anything to
350 * initialize these registers.
352 DEBUGOUT("Initializing Flow Control address, type and timer regs\n");
354 E1000_WRITE_REG(hw, E1000_FCAL, FLOW_CONTROL_ADDRESS_LOW);
355 E1000_WRITE_REG(hw, E1000_FCAH, FLOW_CONTROL_ADDRESS_HIGH);
356 E1000_WRITE_REG(hw, E1000_FCT, FLOW_CONTROL_TYPE);
358 E1000_WRITE_REG(hw, E1000_FCTTV, hw->fc.pause_time);
360 ret_val = e1000_set_fc_watermarks_generic(hw);
367 * e1000_led_on_82542 - Turn on SW controllable LED
368 * @hw: pointer to the HW structure
370 * Turns the SW defined LED on.
372 STATIC s32 e1000_led_on_82542(struct e1000_hw *hw)
374 u32 ctrl = E1000_READ_REG(hw, E1000_CTRL);
376 DEBUGFUNC("e1000_led_on_82542");
378 ctrl |= E1000_CTRL_SWDPIN0;
379 ctrl |= E1000_CTRL_SWDPIO0;
380 E1000_WRITE_REG(hw, E1000_CTRL, ctrl);
382 return E1000_SUCCESS;
386 * e1000_led_off_82542 - Turn off SW controllable LED
387 * @hw: pointer to the HW structure
389 * Turns the SW defined LED off.
391 STATIC s32 e1000_led_off_82542(struct e1000_hw *hw)
393 u32 ctrl = E1000_READ_REG(hw, E1000_CTRL);
395 DEBUGFUNC("e1000_led_off_82542");
397 ctrl &= ~E1000_CTRL_SWDPIN0;
398 ctrl |= E1000_CTRL_SWDPIO0;
399 E1000_WRITE_REG(hw, E1000_CTRL, ctrl);
401 return E1000_SUCCESS;
405 * e1000_rar_set_82542 - Set receive address register
406 * @hw: pointer to the HW structure
407 * @addr: pointer to the receive address
408 * @index: receive address array register
410 * Sets the receive address array register at index to the address passed
413 STATIC void e1000_rar_set_82542(struct e1000_hw *hw, u8 *addr, u32 index)
415 u32 rar_low, rar_high;
417 DEBUGFUNC("e1000_rar_set_82542");
420 * HW expects these in little endian so we reverse the byte order
421 * from network order (big endian) to little endian
423 rar_low = ((u32) addr[0] | ((u32) addr[1] << 8) |
424 ((u32) addr[2] << 16) | ((u32) addr[3] << 24));
426 rar_high = ((u32) addr[4] | ((u32) addr[5] << 8));
428 /* If MAC address zero, no need to set the AV bit */
429 if (rar_low || rar_high)
430 rar_high |= E1000_RAH_AV;
432 E1000_WRITE_REG_ARRAY(hw, E1000_RA, (index << 1), rar_low);
433 E1000_WRITE_REG_ARRAY(hw, E1000_RA, ((index << 1) + 1), rar_high);
437 * e1000_translate_register_82542 - Translate the proper register offset
438 * @reg: e1000 register to be read
440 * Registers in 82542 are located in different offsets than other adapters
441 * even though they function in the same manner. This function takes in
442 * the name of the register to read and returns the correct offset for
445 u32 e1000_translate_register_82542(u32 reg)
448 * Some of the 82542 registers are located at different
449 * offsets than they are in newer adapters.
450 * Despite the difference in location, the registers
451 * function in the same manner.
534 * e1000_clear_hw_cntrs_82542 - Clear device specific hardware counters
535 * @hw: pointer to the HW structure
537 * Clears the hardware counters by reading the counter registers.
539 STATIC void e1000_clear_hw_cntrs_82542(struct e1000_hw *hw)
541 DEBUGFUNC("e1000_clear_hw_cntrs_82542");
543 e1000_clear_hw_cntrs_base_generic(hw);
545 E1000_READ_REG(hw, E1000_PRC64);
546 E1000_READ_REG(hw, E1000_PRC127);
547 E1000_READ_REG(hw, E1000_PRC255);
548 E1000_READ_REG(hw, E1000_PRC511);
549 E1000_READ_REG(hw, E1000_PRC1023);
550 E1000_READ_REG(hw, E1000_PRC1522);
551 E1000_READ_REG(hw, E1000_PTC64);
552 E1000_READ_REG(hw, E1000_PTC127);
553 E1000_READ_REG(hw, E1000_PTC255);
554 E1000_READ_REG(hw, E1000_PTC511);
555 E1000_READ_REG(hw, E1000_PTC1023);
556 E1000_READ_REG(hw, E1000_PTC1522);
560 * e1000_read_mac_addr_82542 - Read device MAC address
561 * @hw: pointer to the HW structure
563 * Reads the device MAC address from the EEPROM and stores the value.
565 s32 e1000_read_mac_addr_82542(struct e1000_hw *hw)
567 s32 ret_val = E1000_SUCCESS;
568 u16 offset, nvm_data, i;
570 DEBUGFUNC("e1000_read_mac_addr");
572 for (i = 0; i < ETH_ADDR_LEN; i += 2) {
574 ret_val = hw->nvm.ops.read(hw, offset, 1, &nvm_data);
576 DEBUGOUT("NVM Read Error\n");
579 hw->mac.perm_addr[i] = (u8)(nvm_data & 0xFF);
580 hw->mac.perm_addr[i+1] = (u8)(nvm_data >> 8);
583 for (i = 0; i < ETH_ADDR_LEN; i++)
584 hw->mac.addr[i] = hw->mac.perm_addr[i];