e100_test.c
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上传日期:2013-04-10
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- /*******************************************************************************
-
- Copyright(c) 1999 - 2002 Intel Corporation. All rights reserved.
-
- This program is free software; you can redistribute it and/or modify it
- under the terms of the GNU General Public License as published by the Free
- Software Foundation; either version 2 of the License, or (at your option)
- any later version.
-
- This program is distributed in the hope that it will be useful, but WITHOUT
- ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
- more details.
-
- You should have received a copy of the GNU General Public License along with
- this program; if not, write to the Free Software Foundation, Inc., 59
- Temple Place - Suite 330, Boston, MA 02111-1307, USA.
-
- The full GNU General Public License is included in this distribution in the
- file called LICENSE.
-
- Contact Information:
- Linux NICS <linux.nics@intel.com>
- Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
- *******************************************************************************/
- #include "e100.h"
- #include "e100_config.h"
- extern u16 e100_eeprom_read(struct e100_private *, u16);
- extern int e100_wait_exec_cmplx(struct e100_private *, u32,u8);
- extern void e100_phy_reset(struct e100_private *bdp);
- extern void e100_phy_autoneg(struct e100_private *bdp);
- extern void e100_phy_set_loopback(struct e100_private *bdp);
- extern void e100_force_speed_duplex(struct e100_private *bdp);
- static u8 e100_diag_selftest(struct net_device *);
- static u8 e100_diag_eeprom(struct net_device *);
- static u8 e100_diag_loopback(struct net_device *);
- static u8 e100_diag_one_loopback (struct net_device *, u8);
- static u8 e100_diag_rcv_loopback_pkt(struct e100_private *);
- static void e100_diag_config_loopback(struct e100_private *, u8, u8, u8 *,u8 *);
- static u8 e100_diag_loopback_alloc(struct e100_private *);
- static void e100_diag_loopback_cu_ru_exec(struct e100_private *);
- static u8 e100_diag_check_pkt(u8 *);
- static void e100_diag_loopback_free(struct e100_private *);
- #define LB_PACKET_SIZE 1500
- /**
- * e100_run_diag - main test execution handler - checks mask of requests and calls the diag routines
- * @dev: atapter's net device data struct
- * @test_info: array with test request mask also used to store test results
- *
- * RETURNS: updated flags field of struct ethtool_test
- */
- u32
- e100_run_diag(struct net_device *dev, u64 *test_info, u32 flags)
- {
- struct e100_private* bdp = dev->priv;
- u8 test_result = true;
- e100_isolate_driver(bdp);
- if (flags & ETH_TEST_FL_OFFLINE) {
- u8 fail_mask;
-
- fail_mask = e100_diag_selftest(dev);
- if (fail_mask) {
- test_result = false;
- if (fail_mask & REGISTER_TEST_FAIL)
- test_info [E100_REG_TEST_FAIL] = true;
- if (fail_mask & ROM_TEST_FAIL)
- test_info [E100_ROM_TEST_FAIL] = true;
- if (fail_mask & SELF_TEST_FAIL)
- test_info [E100_MAC_TEST_FAIL] = true;
- if (fail_mask & TEST_TIMEOUT)
- test_info [E100_CHIP_TIMEOUT] = true;
- }
- fail_mask = e100_diag_loopback(dev);
- if (fail_mask) {
- test_result = false;
- if (fail_mask & PHY_LOOPBACK)
- test_info [E100_LPBK_PHY_FAIL] = true;
- if (fail_mask & MAC_LOOPBACK)
- test_info [E100_LPBK_MAC_FAIL] = true;
- }
- }
- if (!e100_diag_eeprom(dev)) {
- test_result = false;
- test_info [E100_EEPROM_TEST_FAIL] = true;
- }
- /* fully recover only if the device is open*/
- if (netif_running(dev)) {
- e100_deisolate_driver(bdp, true, false);
- } else {
- e100_deisolate_driver(bdp, false, false);
- }
- /*Let card recover from the test*/
- set_current_state(TASK_UNINTERRUPTIBLE);
- schedule_timeout(HZ * 2);
- return flags | (test_result ? 0 : ETH_TEST_FL_FAILED);
- }
- /**
- * e100_diag_selftest - run hardware selftest
- * @dev: atapter's net device data struct
- */
- static u8
- e100_diag_selftest(struct net_device *dev)
- {
- struct e100_private *bdp = dev->priv;
- u32 st_timeout, st_result;
- u8 retval = 0;
- if (!e100_selftest(bdp, &st_timeout, &st_result)) {
- if (!st_timeout) {
- if (st_result & CB_SELFTEST_REGISTER_BIT)
- retval |= REGISTER_TEST_FAIL;
- if (st_result & CB_SELFTEST_DIAG_BIT)
- retval |= SELF_TEST_FAIL;
- if (st_result & CB_SELFTEST_ROM_BIT)
- retval |= ROM_TEST_FAIL;
- } else {
- retval = TEST_TIMEOUT;
- }
- }
- e100_hw_reset_recover(bdp,PORT_SOFTWARE_RESET);
- return retval;
- }
- /**
- * e100_diag_eeprom - validate eeprom checksum correctness
- * @dev: atapter's net device data struct
- *
- */
- static u8
- e100_diag_eeprom (struct net_device *dev)
- {
- struct e100_private *bdp = dev->priv;
- u16 i, eeprom_sum, eeprom_actual_csm;
- for (i = 0, eeprom_sum = 0; i < (bdp->eeprom_size - 1); i++) {
- eeprom_sum += e100_eeprom_read(bdp, i);
- }
- eeprom_actual_csm = e100_eeprom_read(bdp, bdp->eeprom_size - 1);
- if (eeprom_actual_csm == (u16)(EEPROM_SUM - eeprom_sum)) {
- return true;
- }
- return false;
- }
- /**
- * e100_diag_loopback - performs loopback test
- * @dev: atapter's net device data struct
- */
- static u8
- e100_diag_loopback (struct net_device *dev)
- {
- u8 rc = 0;
- if (!e100_diag_one_loopback(dev, PHY_LOOPBACK)) {
- rc |= PHY_LOOPBACK;
- }
- if (!e100_diag_one_loopback(dev, MAC_LOOPBACK)) {
- rc |= MAC_LOOPBACK;
- }
- return rc;
- }
- /**
- * e100_diag_loopback - performs loopback test
- * @dev: atapter's net device data struct
- * @mode: lopback test type
- */
- static u8
- e100_diag_one_loopback (struct net_device *dev, u8 mode)
- {
- struct e100_private *bdp = dev->priv;
- u8 res = false;
- u8 saved_dynamic_tbd = false;
- u8 saved_extended_tcb = false;
- if (!e100_diag_loopback_alloc(bdp))
- return false;
- /* change the config block to standard tcb and the correct loopback */
- e100_diag_config_loopback(bdp, true, mode,
- &saved_extended_tcb, &saved_dynamic_tbd);
- e100_diag_loopback_cu_ru_exec(bdp);
- if (e100_diag_rcv_loopback_pkt(bdp)) {
- res = true;
- }
- e100_diag_loopback_free(bdp);
- /* change the config block to previous tcb mode and the no loopback */
- e100_diag_config_loopback(bdp, false, mode,
- &saved_extended_tcb, &saved_dynamic_tbd);
- return res;
- }
- /**
- * e100_diag_config_loopback - setup/clear loopback before/after lpbk test
- * @bdp: atapter's private data struct
- * @set_loopback: true if the function is called to set lb
- * @loopback_mode: the loopback mode(MAC or PHY)
- * @tcb_extended: true if need to set extended tcb mode after clean loopback
- * @dynamic_tbd: true if needed to set dynamic tbd mode after clean loopback
- *
- */
- void
- e100_diag_config_loopback(struct e100_private* bdp,
- u8 set_loopback,
- u8 loopback_mode,
- u8* tcb_extended,
- u8* dynamic_tbd)
- {
- /* if set_loopback == true - we want to clear tcb_extended/dynamic_tbd.
- * the previous values are saved in the params tcb_extended/dynamic_tbd
- * if set_loopback == false - we want to restore previous value.
- */
- if (set_loopback || (*tcb_extended))
- *tcb_extended = e100_config_tcb_ext_enable(bdp,*tcb_extended);
- if (set_loopback || (*dynamic_tbd))
- *dynamic_tbd = e100_config_dynamic_tbd(bdp,*dynamic_tbd);
- if (set_loopback) {
- /* Configure loopback on MAC */
- e100_config_loopback_mode(bdp,loopback_mode);
- } else {
- e100_config_loopback_mode(bdp,NO_LOOPBACK);
- }
- e100_config(bdp);
- if (loopback_mode == PHY_LOOPBACK) {
- if (set_loopback)
- /* Set PHY loopback mode */
- e100_phy_set_loopback(bdp);
- else { /* Back to normal speed and duplex */
- if (bdp->params.e100_speed_duplex == E100_AUTONEG)
- /* Reset PHY and do autoneg */
- e100_phy_autoneg(bdp);
- else
- /* Reset PHY and force speed and duplex */
- e100_force_speed_duplex(bdp);
- }
- /* Wait for PHY state change */
- set_current_state(TASK_UNINTERRUPTIBLE);
- schedule_timeout(HZ);
- } else { /* For MAC loopback wait 500 msec to take effect */
- set_current_state(TASK_UNINTERRUPTIBLE);
- schedule_timeout(HZ / 2);
- }
- }
-
- /**
- * e100_diag_loopback_alloc - alloc & initate tcb and rfd for the loopback
- * @bdp: atapter's private data struct
- *
- */
- static u8
- e100_diag_loopback_alloc(struct e100_private *bdp)
- {
- dma_addr_t dma_handle;
- tcb_t *tcb;
- rfd_t *rfd;
- tbd_t *tbd;
- /* tcb, tbd and transmit buffer are allocated */
- tcb = pci_alloc_consistent(bdp->pdev,
- (sizeof (tcb_t) + sizeof (tbd_t) +
- LB_PACKET_SIZE),
- &dma_handle);
- if (tcb == NULL)
- return false;
- memset(tcb, 0x00, sizeof (tcb_t) + sizeof (tbd_t) + LB_PACKET_SIZE);
- tcb->tcb_phys = dma_handle;
- tcb->tcb_hdr.cb_status = 0;
- tcb->tcb_hdr.cb_cmd =
- cpu_to_le16(CB_EL_BIT | CB_TRANSMIT | CB_TX_SF_BIT);
- /* Next command is null */
- tcb->tcb_hdr.cb_lnk_ptr = cpu_to_le32(0xffffffff);
- tcb->tcb_cnt = 0;
- tcb->tcb_thrshld = bdp->tx_thld;
- tcb->tcb_tbd_num = 1;
- /* Set up tcb tbd pointer */
- tcb->tcb_tbd_ptr = cpu_to_le32(tcb->tcb_phys + sizeof (tcb_t));
- tbd = (tbd_t *) ((u8 *) tcb + sizeof (tcb_t));
- /* Set up tbd transmit buffer */
- tbd->tbd_buf_addr =
- cpu_to_le32(le32_to_cpu(tcb->tcb_tbd_ptr) + sizeof (tbd_t));
- tbd->tbd_buf_cnt = __constant_cpu_to_le16(1024);
- /* The value of first 512 bytes is FF */
- memset((void *) ((u8 *) tbd + sizeof (tbd_t)), 0xFF, 512);
- /* The value of second 512 bytes is BA */
- memset((void *) ((u8 *) tbd + sizeof (tbd_t) + 512), 0xBA, 512);
- wmb();
- rfd = pci_alloc_consistent(bdp->pdev, sizeof (rfd_t), &dma_handle);
- if (rfd == NULL) {
- pci_free_consistent(bdp->pdev,
- sizeof (tcb_t) + sizeof (tbd_t) +
- LB_PACKET_SIZE, tcb, tcb->tcb_phys);
- return false;
- }
- memset(rfd, 0x00, sizeof (rfd_t));
- /* init all fields in rfd */
- rfd->rfd_header.cb_cmd = cpu_to_le16(RFD_EL_BIT);
- rfd->rfd_sz = cpu_to_le16(ETH_FRAME_LEN + CHKSUM_SIZE);
- /* dma_handle is physical address of rfd */
- bdp->loopback.dma_handle = dma_handle;
- bdp->loopback.tcb = tcb;
- bdp->loopback.rfd = rfd;
- wmb();
- return true;
- }
- /**
- * e100_diag_loopback_cu_ru_exec - activates cu and ru to send & receive the pkt
- * @bdp: atapter's private data struct
- *
- */
- static void
- e100_diag_loopback_cu_ru_exec(struct e100_private *bdp)
- {
- /*load CU & RU base */
- if (!e100_wait_exec_cmplx(bdp, 0, SCB_CUC_LOAD_BASE))
- printk("e100: SCB_CUC_LOAD_BASE failedn");
- if(!e100_wait_exec_cmplx(bdp, 0, SCB_RUC_LOAD_BASE))
- printk("e100: SCB_RUC_LOAD_BASE failed!n");
- if(!e100_wait_exec_cmplx(bdp, bdp->loopback.dma_handle, SCB_RUC_START))
- printk("e100: SCB_RUC_START failed!n");
- bdp->next_cu_cmd = START_WAIT;
- e100_start_cu(bdp, bdp->loopback.tcb);
- bdp->last_tcb = NULL;
- rmb();
- }
- /**
- * e100_diag_check_pkt - checks if a given packet is a loopback packet
- * @bdp: atapter's private data struct
- *
- * Returns true if OK false otherwise.
- */
- static u8
- e100_diag_check_pkt(u8 *datap)
- {
- int i;
- for (i = 0; i<512; i++) {
- if( !((*datap)==0xFF && (*(datap + 512) == 0xBA)) ) {
- printk (KERN_ERR "e100: check loopback packet failed at: %xn", i);
- return false;
- }
- }
- printk (KERN_DEBUG "e100: Check received loopback packet OKn");
- return true;
- }
- /**
- * e100_diag_rcv_loopback_pkt - waits for receive and checks lpbk packet
- * @bdp: atapter's private data struct
- *
- * Returns true if OK false otherwise.
- */
- static u8
- e100_diag_rcv_loopback_pkt(struct e100_private* bdp)
- {
- rfd_t *rfdp;
- u16 rfd_status;
- unsigned long expires = jiffies + HZ * 2;
- rfdp =bdp->loopback.rfd;
- rfd_status = le16_to_cpu(rfdp->rfd_header.cb_status);
- while (!(rfd_status & RFD_STATUS_COMPLETE)) {
- if (time_before(jiffies, expires)) {
- yield();
- rmb();
- rfd_status = le16_to_cpu(rfdp->rfd_header.cb_status);
- } else {
- break;
- }
- }
- if (rfd_status & RFD_STATUS_COMPLETE) {
- printk(KERN_DEBUG "e100: Loopback packet receivedn");
- return e100_diag_check_pkt(((u8 *)rfdp+bdp->rfd_size));
- }
- else {
- printk(KERN_ERR "e100: Loopback packet not receivedn");
- return false;
- }
- }
- /**
- * e100_diag_loopback_free - free data allocated for loopback pkt send/receive
- * @bdp: atapter's private data struct
- *
- */
- static void
- e100_diag_loopback_free (struct e100_private *bdp)
- {
- pci_free_consistent(bdp->pdev,
- sizeof(tcb_t) + sizeof(tbd_t) + LB_PACKET_SIZE,
- bdp->loopback.tcb, bdp->loopback.tcb->tcb_phys);
- pci_free_consistent(bdp->pdev, sizeof(rfd_t), bdp->loopback.rfd,
- bdp->loopback.dma_handle);
- }