MIPS: Octeon: Add hardware RNG platform device.
Add a platform device for the Octeon Random Number Generator (RNG). Signed-off-by: David Daney <ddaney@caviumnetworks.com> Acked-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
David Daney
Ralf Baechle
parent
982f6ffeee
commit
e26449153c
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@ -33,6 +33,7 @@
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#include <asm/time.h>
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#include <asm/octeon/octeon.h>
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#include <asm/octeon/cvmx-rnm-defs.h>
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#ifdef CONFIG_CAVIUM_DECODE_RSL
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extern void cvmx_interrupt_rsl_decode(void);
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@ -926,3 +927,45 @@ out:
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return ret;
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}
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device_initcall(octeon_cf_device_init);
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/* Octeon Random Number Generator. */
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static int __init octeon_rng_device_init(void)
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{
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struct platform_device *pd;
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int ret = 0;
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struct resource rng_resources[] = {
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{
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.flags = IORESOURCE_MEM,
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.start = XKPHYS_TO_PHYS(CVMX_RNM_CTL_STATUS),
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.end = XKPHYS_TO_PHYS(CVMX_RNM_CTL_STATUS) + 0xf
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}, {
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.flags = IORESOURCE_MEM,
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.start = cvmx_build_io_address(8, 0),
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.end = cvmx_build_io_address(8, 0) + 0x7
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}
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};
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pd = platform_device_alloc("octeon_rng", -1);
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if (!pd) {
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ret = -ENOMEM;
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goto out;
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}
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ret = platform_device_add_resources(pd, rng_resources,
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ARRAY_SIZE(rng_resources));
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if (ret)
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goto fail;
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ret = platform_device_add(pd);
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if (ret)
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goto fail;
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return ret;
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fail:
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platform_device_put(pd);
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out:
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return ret;
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}
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device_initcall(octeon_rng_device_init);
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@ -0,0 +1,88 @@
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/***********************license start***************
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* Author: Cavium Networks
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*
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* Contact: support@caviumnetworks.com
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* This file is part of the OCTEON SDK
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*
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* Copyright (c) 2003-2008 Cavium Networks
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*
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* This file is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License, Version 2, as
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* published by the Free Software Foundation.
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*
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* This file is distributed in the hope that it will be useful, but
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* AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or
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* NONINFRINGEMENT. See the GNU General Public License for more
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* details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this file; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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* or visit http://www.gnu.org/licenses/.
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*
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* This file may also be available under a different license from Cavium.
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* Contact Cavium Networks for more information
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***********************license end**************************************/
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#ifndef __CVMX_RNM_DEFS_H__
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#define __CVMX_RNM_DEFS_H__
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#include <linux/types.h>
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#define CVMX_RNM_BIST_STATUS \
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CVMX_ADD_IO_SEG(0x0001180040000008ull)
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#define CVMX_RNM_CTL_STATUS \
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CVMX_ADD_IO_SEG(0x0001180040000000ull)
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union cvmx_rnm_bist_status {
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uint64_t u64;
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struct cvmx_rnm_bist_status_s {
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uint64_t reserved_2_63:62;
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uint64_t rrc:1;
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uint64_t mem:1;
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} s;
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struct cvmx_rnm_bist_status_s cn30xx;
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struct cvmx_rnm_bist_status_s cn31xx;
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struct cvmx_rnm_bist_status_s cn38xx;
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struct cvmx_rnm_bist_status_s cn38xxp2;
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struct cvmx_rnm_bist_status_s cn50xx;
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struct cvmx_rnm_bist_status_s cn52xx;
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struct cvmx_rnm_bist_status_s cn52xxp1;
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struct cvmx_rnm_bist_status_s cn56xx;
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struct cvmx_rnm_bist_status_s cn56xxp1;
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struct cvmx_rnm_bist_status_s cn58xx;
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struct cvmx_rnm_bist_status_s cn58xxp1;
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};
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union cvmx_rnm_ctl_status {
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uint64_t u64;
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struct cvmx_rnm_ctl_status_s {
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uint64_t reserved_9_63:55;
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uint64_t ent_sel:4;
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uint64_t exp_ent:1;
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uint64_t rng_rst:1;
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uint64_t rnm_rst:1;
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uint64_t rng_en:1;
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uint64_t ent_en:1;
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} s;
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struct cvmx_rnm_ctl_status_cn30xx {
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uint64_t reserved_4_63:60;
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uint64_t rng_rst:1;
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uint64_t rnm_rst:1;
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uint64_t rng_en:1;
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uint64_t ent_en:1;
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} cn30xx;
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struct cvmx_rnm_ctl_status_cn30xx cn31xx;
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struct cvmx_rnm_ctl_status_cn30xx cn38xx;
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struct cvmx_rnm_ctl_status_cn30xx cn38xxp2;
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struct cvmx_rnm_ctl_status_s cn50xx;
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struct cvmx_rnm_ctl_status_s cn52xx;
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struct cvmx_rnm_ctl_status_s cn52xxp1;
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struct cvmx_rnm_ctl_status_s cn56xx;
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struct cvmx_rnm_ctl_status_s cn56xxp1;
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struct cvmx_rnm_ctl_status_s cn58xx;
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struct cvmx_rnm_ctl_status_s cn58xxp1;
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};
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#endif
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