diff options
Diffstat (limited to 'drivers/staging/octeon/cvmx-interrupt-rsl.c')
| -rw-r--r-- | drivers/staging/octeon/cvmx-interrupt-rsl.c | 140 |
1 files changed, 140 insertions, 0 deletions
diff --git a/drivers/staging/octeon/cvmx-interrupt-rsl.c b/drivers/staging/octeon/cvmx-interrupt-rsl.c new file mode 100644 index 00000000000..df50048cfbc --- /dev/null +++ b/drivers/staging/octeon/cvmx-interrupt-rsl.c @@ -0,0 +1,140 @@ +/***********************license start*************** + * Author: Cavium Networks + * + * Contact: support@caviumnetworks.com + * This file is part of the OCTEON SDK + * + * Copyright (c) 2003-2008 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 + ***********************license end**************************************/ + +/* + * Utility functions to decode Octeon's RSL_INT_BLOCKS + * interrupts into error messages. + */ + +#include <asm/octeon/octeon.h> + +#include "cvmx-asxx-defs.h" +#include "cvmx-gmxx-defs.h" + +#ifndef PRINT_ERROR +#define PRINT_ERROR(format, ...) +#endif + +void __cvmx_interrupt_gmxx_rxx_int_en_enable(int index, int block); + +/** + * Enable ASX error interrupts that exist on CN3XXX, CN50XX, and + * CN58XX. + * + * @block: Interface to enable 0-1 + */ +void __cvmx_interrupt_asxx_enable(int block) +{ + int mask; + union cvmx_asxx_int_en csr; + /* + * CN38XX and CN58XX have two interfaces with 4 ports per + * interface. All other chips have a max of 3 ports on + * interface 0 + */ + if (OCTEON_IS_MODEL(OCTEON_CN38XX) || OCTEON_IS_MODEL(OCTEON_CN58XX)) + mask = 0xf; /* Set enables for 4 ports */ + else + mask = 0x7; /* Set enables for 3 ports */ + + /* Enable interface interrupts */ + csr.u64 = cvmx_read_csr(CVMX_ASXX_INT_EN(block)); + csr.s.txpsh = mask; + csr.s.txpop = mask; + csr.s.ovrflw = mask; + cvmx_write_csr(CVMX_ASXX_INT_EN(block), csr.u64); +} +/** + * Enable GMX error reporting for the supplied interface + * + * @interface: Interface to enable + */ +void __cvmx_interrupt_gmxx_enable(int interface) +{ + union cvmx_gmxx_inf_mode mode; + union cvmx_gmxx_tx_int_en gmx_tx_int_en; + int num_ports; + int index; + + mode.u64 = cvmx_read_csr(CVMX_GMXX_INF_MODE(interface)); + + if (OCTEON_IS_MODEL(OCTEON_CN56XX) || OCTEON_IS_MODEL(OCTEON_CN52XX)) { + if (mode.s.en) { + switch (mode.cn56xx.mode) { + case 1: /* XAUI */ + num_ports = 1; + break; + case 2: /* SGMII */ + case 3: /* PICMG */ + num_ports = 4; + break; + default: /* Disabled */ + num_ports = 0; + break; + } + } else + num_ports = 0; + } else { + if (mode.s.en) { + if (OCTEON_IS_MODEL(OCTEON_CN38XX) + || OCTEON_IS_MODEL(OCTEON_CN58XX)) { + /* + * SPI on CN38XX and CN58XX report all + * errors through port 0. RGMII needs + * to check all 4 ports + */ + if (mode.s.type) + num_ports = 1; + else + num_ports = 4; + } else { + /* + * CN30XX, CN31XX, and CN50XX have two + * or three ports. GMII and MII has 2, + * RGMII has three + */ + if (mode.s.type) + num_ports = 2; + else + num_ports = 3; + } + } else + num_ports = 0; + } + + gmx_tx_int_en.u64 = 0; + if (num_ports) { + if (OCTEON_IS_MODEL(OCTEON_CN38XX) + || OCTEON_IS_MODEL(OCTEON_CN58XX)) + gmx_tx_int_en.s.ncb_nxa = 1; + gmx_tx_int_en.s.pko_nxa = 1; + } + gmx_tx_int_en.s.undflw = (1 << num_ports) - 1; + cvmx_write_csr(CVMX_GMXX_TX_INT_EN(interface), gmx_tx_int_en.u64); + for (index = 0; index < num_ports; index++) + __cvmx_interrupt_gmxx_rxx_int_en_enable(index, interface); +} |