static void megasas_handle_frame(MegasasState *s, uint64_t frame_addr,
                                 uint32_t frame_count)
{
    uint8_t frame_status = MFI_STAT_INVALID_CMD;
    uint64_t frame_context;
    MegasasCmd *cmd;

    /*
     * Always read 64bit context, top bits will be
     * masked out if required in megasas_enqueue_frame()
     */
    frame_context = megasas_frame_get_context(s, frame_addr);

    cmd = megasas_enqueue_frame(s, frame_addr, frame_context, frame_count);
    if (!cmd) {
        /* reply queue full */
        trace_megasas_frame_busy(frame_addr);
        megasas_frame_set_scsi_status(s, frame_addr, BUSY);
        megasas_frame_set_cmd_status(s, frame_addr, MFI_STAT_SCSI_DONE_WITH_ERROR);
        megasas_complete_frame(s, frame_context);
        s->event_count++;
        return;
    }
    switch (cmd->frame->header.frame_cmd) {
    case MFI_CMD_INIT:
        frame_status = megasas_init_firmware(s, cmd);
        break;
    case MFI_CMD_DCMD:
        frame_status = megasas_handle_dcmd(s, cmd);
        break;
    case MFI_CMD_ABORT:
        frame_status = megasas_handle_abort(s, cmd);
        break;
    case MFI_CMD_PD_SCSI_IO:
        frame_status = megasas_handle_scsi(s, cmd, 0);
        break;
    case MFI_CMD_LD_SCSI_IO:
        frame_status = megasas_handle_scsi(s, cmd, 1);
        break;
    case MFI_CMD_LD_READ:
    case MFI_CMD_LD_WRITE:
        frame_status = megasas_handle_io(s, cmd);
        break;
    default:
        trace_megasas_unhandled_frame_cmd(cmd->index,
                                          cmd->frame->header.frame_cmd);
        s->event_count++;
        break;
    }
    if (frame_status != MFI_STAT_INVALID_STATUS) {
        if (cmd->frame) {
            cmd->frame->header.cmd_status = frame_status;
        } else {
            megasas_frame_set_cmd_status(s, frame_addr, frame_status);
        }
        megasas_unmap_frame(s, cmd);
        megasas_complete_frame(s, cmd->context);
    }
}

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