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scsi: cxlflash: Refactor context reset to share reset logic
As staging for supporting hardware with different context reset registers but a similar reset procedure, refactor the existing context reset routine to move the reset logic to a common routine. This will allow hardware with a different reset register to leverage existing code. Signed-off-by: Matthew R. Ochs <mrochs@linux.vnet.ibm.com> Signed-off-by: Uma Krishnan <ukrishn@linux.vnet.ibm.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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73eba2be92
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1 changed files with 16 additions and 4 deletions
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@ -188,10 +188,11 @@ static void cmd_complete(struct afu_cmd *cmd)
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}
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/**
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* context_reset_ioarrin() - reset command owner context via IOARRIN register
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* context_reset() - reset command owner context via specified register
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* @cmd: AFU command that timed out.
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* @reset_reg: MMIO register to perform reset.
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*/
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static void context_reset_ioarrin(struct afu_cmd *cmd)
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static void context_reset(struct afu_cmd *cmd, __be64 __iomem *reset_reg)
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{
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int nretry = 0;
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u64 rrin = 0x1;
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@ -201,9 +202,9 @@ static void context_reset_ioarrin(struct afu_cmd *cmd)
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pr_debug("%s: cmd=%p\n", __func__, cmd);
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writeq_be(rrin, &afu->host_map->ioarrin);
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writeq_be(rrin, reset_reg);
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do {
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rrin = readq_be(&afu->host_map->ioarrin);
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rrin = readq_be(reset_reg);
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if (rrin != 0x1)
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break;
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/* Double delay each time */
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@ -214,6 +215,17 @@ static void context_reset_ioarrin(struct afu_cmd *cmd)
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__func__, rrin, nretry);
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}
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/**
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* context_reset_ioarrin() - reset command owner context via IOARRIN register
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* @cmd: AFU command that timed out.
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*/
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static void context_reset_ioarrin(struct afu_cmd *cmd)
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{
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struct afu *afu = cmd->parent;
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context_reset(cmd, &afu->host_map->ioarrin);
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}
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/**
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* send_cmd_ioarrin() - sends an AFU command via IOARRIN register
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* @afu: AFU associated with the host.
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