mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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1cc7e01ff9
The pending request counter was read from the wrong register. While at it, there is no need to use an atomic for it as it is only read localy in a loop. Signed-off-by: Jan Glauber <jglauber@cavium.com> Reviewed-by: Robert Richter <rrichter@cavium.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
121 lines
3.9 KiB
C
121 lines
3.9 KiB
C
/***********************license start************************************
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* Copyright (c) 2003-2017 Cavium, Inc.
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* All rights reserved.
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*
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* License: one of 'Cavium License' or 'GNU General Public License Version 2'
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*
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* This file is provided under the terms of the Cavium License (see below)
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* or under the terms of GNU General Public License, Version 2, as
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* published by the Free Software Foundation. When using or redistributing
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* this file, you may do so under either license.
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*
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* Cavium License: Redistribution and use in source and binary forms, with
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* or without modification, are permitted provided that the following
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* conditions are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* * Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials provided
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* with the distribution.
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*
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* * Neither the name of Cavium Inc. nor the names of its contributors may be
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* used to endorse or promote products derived from this software without
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* specific prior written permission.
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*
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* This Software, including technical data, may be subject to U.S. export
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* control laws, including the U.S. Export Administration Act and its
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* associated regulations, and may be subject to export or import
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* regulations in other countries.
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*
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* TO THE MAXIMUM EXTENT PERMITTED BY LAW, THE SOFTWARE IS PROVIDED "AS IS"
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* AND WITH ALL FAULTS AND CAVIUM INC. MAKES NO PROMISES, REPRESENTATIONS
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* OR WARRANTIES, EITHER EXPRESS, IMPLIED, STATUTORY, OR OTHERWISE, WITH
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* RESPECT TO THE SOFTWARE, INCLUDING ITS CONDITION, ITS CONFORMITY TO ANY
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* REPRESENTATION OR DESCRIPTION, OR THE EXISTENCE OF ANY LATENT OR PATENT
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* DEFECTS, AND CAVIUM SPECIFICALLY DISCLAIMS ALL IMPLIED (IF ANY)
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* WARRANTIES OF TITLE, MERCHANTABILITY, NONINFRINGEMENT, FITNESS FOR A
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* PARTICULAR PURPOSE, LACK OF VIRUSES, ACCURACY OR COMPLETENESS, QUIET
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* ENJOYMENT, QUIET POSSESSION OR CORRESPONDENCE TO DESCRIPTION. THE
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* ENTIRE RISK ARISING OUT OF USE OR PERFORMANCE OF THE SOFTWARE LIES
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* WITH YOU.
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***********************license end**************************************/
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#ifndef __ZIP_MAIN_H__
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#define __ZIP_MAIN_H__
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#include "zip_device.h"
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#include "zip_regs.h"
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/* PCI device IDs */
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#define PCI_DEVICE_ID_THUNDERX_ZIP 0xA01A
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/* ZIP device BARs */
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#define PCI_CFG_ZIP_PF_BAR0 0 /* Base addr for normal regs */
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/* Maximum available zip queues */
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#define ZIP_MAX_NUM_QUEUES 8
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#define ZIP_128B_ALIGN 7
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/* Command queue buffer size */
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#define ZIP_CMD_QBUF_SIZE (8064 + 8)
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struct zip_registers {
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char *reg_name;
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u64 reg_offset;
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};
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/* ZIP Compression - Decompression stats */
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struct zip_stats {
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atomic64_t comp_req_submit;
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atomic64_t comp_req_complete;
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atomic64_t decomp_req_submit;
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atomic64_t decomp_req_complete;
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atomic64_t comp_in_bytes;
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atomic64_t comp_out_bytes;
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atomic64_t decomp_in_bytes;
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atomic64_t decomp_out_bytes;
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atomic64_t decomp_bad_reqs;
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};
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/* ZIP Instruction Queue */
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struct zip_iq {
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u64 *sw_head;
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u64 *sw_tail;
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u64 *hw_tail;
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u64 done_cnt;
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u64 pend_cnt;
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u64 free_flag;
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/* ZIP IQ lock */
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spinlock_t lock;
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};
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/* ZIP Device */
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struct zip_device {
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u32 index;
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void __iomem *reg_base;
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struct pci_dev *pdev;
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/* Different ZIP Constants */
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u64 depth;
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u64 onfsize;
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u64 ctxsize;
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struct zip_iq iq[ZIP_MAX_NUM_QUEUES];
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struct zip_stats stats;
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};
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/* Prototypes */
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struct zip_device *zip_get_device(int node_id);
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int zip_get_node_id(void);
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void zip_reg_write(u64 val, u64 __iomem *addr);
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u64 zip_reg_read(u64 __iomem *addr);
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void zip_update_cmd_bufs(struct zip_device *zip_dev, u32 queue);
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u32 zip_load_instr(union zip_inst_s *instr, struct zip_device *zip_dev);
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#endif /* ZIP_MAIN_H */
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