C++ (Cpp) fill_hpc_entries Examples

Example #1

static int dma_setup(struct scsi_cmnd *cmd, int datainp)
{
	struct ip22_hostdata *hdata = host_to_hostdata(cmd->device->host);
	struct hpc3_scsiregs *hregs =
		(struct hpc3_scsiregs *) cmd->device->host->base;

	pr_debug("dma_setup: datainp<%d> hcp<%p> ", datainp, hdata->cpu);

	hdata->wh.dma_dir = datainp;

	/*
	 * wd33c93 shouldn't pass us bogus dma_setups, but it does:-(  The
	 * other wd33c93 drivers deal with it the same way (which isn't that
	 * obvious).  IMHO a better fix would be, not to do these dma setups
	 * in the first place.
	 */
	if (cmd->SCp.ptr == NULL || cmd->SCp.this_residual == 0)
		return 1;

	fill_hpc_entries(hdata, cmd, datainp);

	pr_debug(" HPCGO\n");

	/* Start up the HPC. */
	hregs->ndptr = hdata->dma;
	if (datainp)
		hregs->ctrl = HPC3_SCTRL_ACTIVE;
	else
		hregs->ctrl = HPC3_SCTRL_ACTIVE | HPC3_SCTRL_DIR;

	return 0;
}

Example #2

File: sgiwd93.c Project: xricson/knoppix

static int dma_setup(Scsi_Cmnd *cmd, int datainp)
{
	struct WD33C93_hostdata *hdata = (struct WD33C93_hostdata *)cmd->host->hostdata;
	struct hpc3_scsiregs *hregs = (struct hpc3_scsiregs *) cmd->host->base;
	struct hpc_chunk *hcp = (struct hpc_chunk *) hdata->dma_bounce_buffer;

#ifdef DEBUG_DMA
	printk("dma_setup: datainp<%d> hcp<%p> ",
	       datainp, hcp);
#endif

	hdata->dma_dir = datainp;

	/*
	 * wd33c93 shouldn't pass us bogus dma_setups, but
	 * it does:-( The other wd33c93 drivers deal with
	 * it the same way (which isn't that obvious).
	 * IMHO a better fix would be, not to do these
	 * dma setups in the first place
	 */
	if (cmd->SCp.ptr == NULL)
		return 1;

	fill_hpc_entries (&hcp, cmd->SCp.ptr,cmd->SCp.this_residual);

	/* To make sure, if we trip an HPC bug, that we transfer
	 * every single byte, we tag on an extra zero length dma
	 * descriptor at the end of the chain.
	 */
	hcp->desc.pbuf = 0;
	hcp->desc.cntinfo = (HPCDMA_EOX);

#ifdef DEBUG_DMA
	printk(" HPCGO\n");
#endif

	/* Start up the HPC. */
	hregs->ndptr = PHYSADDR(hdata->dma_bounce_buffer);
	if(datainp) {
		dma_cache_inv((unsigned long) cmd->SCp.ptr, cmd->SCp.this_residual);
		hregs->ctrl = (HPC3_SCTRL_ACTIVE);
	} else {
		dma_cache_wback_inv((unsigned long) cmd->SCp.ptr, cmd->SCp.this_residual);
		hregs->ctrl = (HPC3_SCTRL_ACTIVE | HPC3_SCTRL_DIR);
	}

	return 0;
}