diff options
Diffstat (limited to 'drivers/staging/octeon/ethernet-spi.c')
| -rw-r--r-- | drivers/staging/octeon/ethernet-spi.c | 237 |
1 files changed, 92 insertions, 145 deletions
diff --git a/drivers/staging/octeon/ethernet-spi.c b/drivers/staging/octeon/ethernet-spi.c index 5108bc0bb..2ae1944b3 100644 --- a/drivers/staging/octeon/ethernet-spi.c +++ b/drivers/staging/octeon/ethernet-spi.c @@ -1,29 +1,13 @@ -/********************************************************************** - * Author: Cavium Networks - * - * Contact: support@caviumnetworks.com - * This file is part of the OCTEON SDK +/* + * This file is based on code from OCTEON SDK by Cavium Networks. * * Copyright (c) 2003-2007 Cavium Networks * * This file is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License, Version 2, as * published by the Free Software Foundation. - * - * This file is distributed in the hope that it will be useful, but - * AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty - * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or - * NONINFRINGEMENT. See the GNU General Public License for more - * details. - * - * You should have received a copy of the GNU General Public License - * along with this file; if not, write to the Free Software - * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - * or visit http://www.gnu.org/licenses/. - * - * This file may also be available under a different license from Cavium. - * Contact Cavium Networks for more information -**********************************************************************/ + */ + #include <linux/kernel.h> #include <linux/netdevice.h> #include <linux/interrupt.h> @@ -44,141 +28,104 @@ static int number_spi_ports; static int need_retrain[2] = { 0, 0 }; -static irqreturn_t cvm_oct_spi_rml_interrupt(int cpl, void *dev_id) +static void cvm_oct_spxx_int_pr(union cvmx_spxx_int_reg spx_int_reg, int index) { - irqreturn_t return_status = IRQ_NONE; - union cvmx_npi_rsl_int_blocks rsl_int_blocks; - - /* Check and see if this interrupt was caused by the GMX block */ - rsl_int_blocks.u64 = cvmx_read_csr(CVMX_NPI_RSL_INT_BLOCKS); - if (rsl_int_blocks.s.spx1) { /* 19 - SPX1_INT_REG & STX1_INT_REG */ - - union cvmx_spxx_int_reg spx_int_reg; - union cvmx_stxx_int_reg stx_int_reg; - - spx_int_reg.u64 = cvmx_read_csr(CVMX_SPXX_INT_REG(1)); - cvmx_write_csr(CVMX_SPXX_INT_REG(1), spx_int_reg.u64); - if (!need_retrain[1]) { - - spx_int_reg.u64 &= cvmx_read_csr(CVMX_SPXX_INT_MSK(1)); - if (spx_int_reg.s.spf) - pr_err("SPI1: SRX Spi4 interface down\n"); - if (spx_int_reg.s.calerr) - pr_err("SPI1: SRX Spi4 Calendar table parity error\n"); - if (spx_int_reg.s.syncerr) - pr_err("SPI1: SRX Consecutive Spi4 DIP4 errors have exceeded SPX_ERR_CTL[ERRCNT]\n"); - if (spx_int_reg.s.diperr) - pr_err("SPI1: SRX Spi4 DIP4 error\n"); - if (spx_int_reg.s.tpaovr) - pr_err("SPI1: SRX Selected port has hit TPA overflow\n"); - if (spx_int_reg.s.rsverr) - pr_err("SPI1: SRX Spi4 reserved control word detected\n"); - if (spx_int_reg.s.drwnng) - pr_err("SPI1: SRX Spi4 receive FIFO drowning/overflow\n"); - if (spx_int_reg.s.clserr) - pr_err("SPI1: SRX Spi4 packet closed on non-16B alignment without EOP\n"); - if (spx_int_reg.s.spiovr) - pr_err("SPI1: SRX Spi4 async FIFO overflow\n"); - if (spx_int_reg.s.abnorm) - pr_err("SPI1: SRX Abnormal packet termination (ERR bit)\n"); - if (spx_int_reg.s.prtnxa) - pr_err("SPI1: SRX Port out of range\n"); - } - - stx_int_reg.u64 = cvmx_read_csr(CVMX_STXX_INT_REG(1)); - cvmx_write_csr(CVMX_STXX_INT_REG(1), stx_int_reg.u64); - if (!need_retrain[1]) { + if (spx_int_reg.s.spf) + pr_err("SPI%d: SRX Spi4 interface down\n", index); + if (spx_int_reg.s.calerr) + pr_err("SPI%d: SRX Spi4 Calendar table parity error\n", index); + if (spx_int_reg.s.syncerr) + pr_err("SPI%d: SRX Consecutive Spi4 DIP4 errors have exceeded SPX_ERR_CTL[ERRCNT]\n", + index); + if (spx_int_reg.s.diperr) + pr_err("SPI%d: SRX Spi4 DIP4 error\n", index); + if (spx_int_reg.s.tpaovr) + pr_err("SPI%d: SRX Selected port has hit TPA overflow\n", + index); + if (spx_int_reg.s.rsverr) + pr_err("SPI%d: SRX Spi4 reserved control word detected\n", + index); + if (spx_int_reg.s.drwnng) + pr_err("SPI%d: SRX Spi4 receive FIFO drowning/overflow\n", + index); + if (spx_int_reg.s.clserr) + pr_err("SPI%d: SRX Spi4 packet closed on non-16B alignment without EOP\n", + index); + if (spx_int_reg.s.spiovr) + pr_err("SPI%d: SRX Spi4 async FIFO overflow\n", index); + if (spx_int_reg.s.abnorm) + pr_err("SPI%d: SRX Abnormal packet termination (ERR bit)\n", + index); + if (spx_int_reg.s.prtnxa) + pr_err("SPI%d: SRX Port out of range\n", index); +} - stx_int_reg.u64 &= cvmx_read_csr(CVMX_STXX_INT_MSK(1)); - if (stx_int_reg.s.syncerr) - pr_err("SPI1: STX Interface encountered a fatal error\n"); - if (stx_int_reg.s.frmerr) - pr_err("SPI1: STX FRMCNT has exceeded STX_DIP_CNT[MAXFRM]\n"); - if (stx_int_reg.s.unxfrm) - pr_err("SPI1: STX Unexpected framing sequence\n"); - if (stx_int_reg.s.nosync) - pr_err("SPI1: STX ERRCNT has exceeded STX_DIP_CNT[MAXDIP]\n"); - if (stx_int_reg.s.diperr) - pr_err("SPI1: STX DIP2 error on the Spi4 Status channel\n"); - if (stx_int_reg.s.datovr) - pr_err("SPI1: STX Spi4 FIFO overflow error\n"); - if (stx_int_reg.s.ovrbst) - pr_err("SPI1: STX Transmit packet burst too big\n"); - if (stx_int_reg.s.calpar1) - pr_err("SPI1: STX Calendar Table Parity Error Bank1\n"); - if (stx_int_reg.s.calpar0) - pr_err("SPI1: STX Calendar Table Parity Error Bank0\n"); - } +static void cvm_oct_stxx_int_pr(union cvmx_stxx_int_reg stx_int_reg, int index) +{ + if (stx_int_reg.s.syncerr) + pr_err("SPI%d: STX Interface encountered a fatal error\n", + index); + if (stx_int_reg.s.frmerr) + pr_err("SPI%d: STX FRMCNT has exceeded STX_DIP_CNT[MAXFRM]\n", + index); + if (stx_int_reg.s.unxfrm) + pr_err("SPI%d: STX Unexpected framing sequence\n", index); + if (stx_int_reg.s.nosync) + pr_err("SPI%d: STX ERRCNT has exceeded STX_DIP_CNT[MAXDIP]\n", + index); + if (stx_int_reg.s.diperr) + pr_err("SPI%d: STX DIP2 error on the Spi4 Status channel\n", + index); + if (stx_int_reg.s.datovr) + pr_err("SPI%d: STX Spi4 FIFO overflow error\n", index); + if (stx_int_reg.s.ovrbst) + pr_err("SPI%d: STX Transmit packet burst too big\n", index); + if (stx_int_reg.s.calpar1) + pr_err("SPI%d: STX Calendar Table Parity Error Bank%d\n", + index, 1); + if (stx_int_reg.s.calpar0) + pr_err("SPI%d: STX Calendar Table Parity Error Bank%d\n", + index, 0); +} - cvmx_write_csr(CVMX_SPXX_INT_MSK(1), 0); - cvmx_write_csr(CVMX_STXX_INT_MSK(1), 0); - need_retrain[1] = 1; - return_status = IRQ_HANDLED; +static irqreturn_t cvm_oct_spi_spx_int(int index) +{ + union cvmx_spxx_int_reg spx_int_reg; + union cvmx_stxx_int_reg stx_int_reg; + + spx_int_reg.u64 = cvmx_read_csr(CVMX_SPXX_INT_REG(index)); + cvmx_write_csr(CVMX_SPXX_INT_REG(index), spx_int_reg.u64); + if (!need_retrain[index]) { + spx_int_reg.u64 &= cvmx_read_csr(CVMX_SPXX_INT_MSK(index)); + cvm_oct_spxx_int_pr(spx_int_reg, index); } - if (rsl_int_blocks.s.spx0) { /* 18 - SPX0_INT_REG & STX0_INT_REG */ - union cvmx_spxx_int_reg spx_int_reg; - union cvmx_stxx_int_reg stx_int_reg; + stx_int_reg.u64 = cvmx_read_csr(CVMX_STXX_INT_REG(index)); + cvmx_write_csr(CVMX_STXX_INT_REG(index), stx_int_reg.u64); + if (!need_retrain[index]) { + stx_int_reg.u64 &= cvmx_read_csr(CVMX_STXX_INT_MSK(index)); + cvm_oct_stxx_int_pr(stx_int_reg, index); + } - spx_int_reg.u64 = cvmx_read_csr(CVMX_SPXX_INT_REG(0)); - cvmx_write_csr(CVMX_SPXX_INT_REG(0), spx_int_reg.u64); - if (!need_retrain[0]) { + cvmx_write_csr(CVMX_SPXX_INT_MSK(index), 0); + cvmx_write_csr(CVMX_STXX_INT_MSK(index), 0); + need_retrain[index] = 1; - spx_int_reg.u64 &= cvmx_read_csr(CVMX_SPXX_INT_MSK(0)); - if (spx_int_reg.s.spf) - pr_err("SPI0: SRX Spi4 interface down\n"); - if (spx_int_reg.s.calerr) - pr_err("SPI0: SRX Spi4 Calendar table parity error\n"); - if (spx_int_reg.s.syncerr) - pr_err("SPI0: SRX Consecutive Spi4 DIP4 errors have exceeded SPX_ERR_CTL[ERRCNT]\n"); - if (spx_int_reg.s.diperr) - pr_err("SPI0: SRX Spi4 DIP4 error\n"); - if (spx_int_reg.s.tpaovr) - pr_err("SPI0: SRX Selected port has hit TPA overflow\n"); - if (spx_int_reg.s.rsverr) - pr_err("SPI0: SRX Spi4 reserved control word detected\n"); - if (spx_int_reg.s.drwnng) - pr_err("SPI0: SRX Spi4 receive FIFO drowning/overflow\n"); - if (spx_int_reg.s.clserr) - pr_err("SPI0: SRX Spi4 packet closed on non-16B alignment without EOP\n"); - if (spx_int_reg.s.spiovr) - pr_err("SPI0: SRX Spi4 async FIFO overflow\n"); - if (spx_int_reg.s.abnorm) - pr_err("SPI0: SRX Abnormal packet termination (ERR bit)\n"); - if (spx_int_reg.s.prtnxa) - pr_err("SPI0: SRX Port out of range\n"); - } + return IRQ_HANDLED; +} - stx_int_reg.u64 = cvmx_read_csr(CVMX_STXX_INT_REG(0)); - cvmx_write_csr(CVMX_STXX_INT_REG(0), stx_int_reg.u64); - if (!need_retrain[0]) { +static irqreturn_t cvm_oct_spi_rml_interrupt(int cpl, void *dev_id) +{ + irqreturn_t return_status = IRQ_NONE; + union cvmx_npi_rsl_int_blocks rsl_int_blocks; - stx_int_reg.u64 &= cvmx_read_csr(CVMX_STXX_INT_MSK(0)); - if (stx_int_reg.s.syncerr) - pr_err("SPI0: STX Interface encountered a fatal error\n"); - if (stx_int_reg.s.frmerr) - pr_err("SPI0: STX FRMCNT has exceeded STX_DIP_CNT[MAXFRM]\n"); - if (stx_int_reg.s.unxfrm) - pr_err("SPI0: STX Unexpected framing sequence\n"); - if (stx_int_reg.s.nosync) - pr_err("SPI0: STX ERRCNT has exceeded STX_DIP_CNT[MAXDIP]\n"); - if (stx_int_reg.s.diperr) - pr_err("SPI0: STX DIP2 error on the Spi4 Status channel\n"); - if (stx_int_reg.s.datovr) - pr_err("SPI0: STX Spi4 FIFO overflow error\n"); - if (stx_int_reg.s.ovrbst) - pr_err("SPI0: STX Transmit packet burst too big\n"); - if (stx_int_reg.s.calpar1) - pr_err("SPI0: STX Calendar Table Parity Error Bank1\n"); - if (stx_int_reg.s.calpar0) - pr_err("SPI0: STX Calendar Table Parity Error Bank0\n"); - } + /* Check and see if this interrupt was caused by the GMX block */ + rsl_int_blocks.u64 = cvmx_read_csr(CVMX_NPI_RSL_INT_BLOCKS); + if (rsl_int_blocks.s.spx1) /* 19 - SPX1_INT_REG & STX1_INT_REG */ + return_status = cvm_oct_spi_spx_int(1); - cvmx_write_csr(CVMX_SPXX_INT_MSK(0), 0); - cvmx_write_csr(CVMX_STXX_INT_MSK(0), 0); - need_retrain[0] = 1; - return_status = IRQ_HANDLED; - } + if (rsl_int_blocks.s.spx0) /* 18 - SPX0_INT_REG & STX0_INT_REG */ + return_status = cvm_oct_spi_spx_int(0); return return_status; } |