master/mipi-i3c-hci/core.c

196 	struct hci_xfer *xfer;
206 	xfer = hci_alloc_xfer(nxfers);
207 	if (!xfer)
211 		xfer->data = NULL;
212 		xfer->data_len = 0;
213 		xfer->rnw = false;
214 		hci->cmd->prep_ccc(hci, xfer, I3C_BROADCAST_ADDR,
216 		xfer++;
220 		xfer[i].data = ccc->dests[i].payload.data;
221 		xfer[i].data_len = ccc->dests[i].payload.len;
222 		xfer[i].rnw = ccc->rnw;
223 		ret = hci->cmd->prep_ccc(hci, &xfer[i], ccc->dests[i].addr,
227 		xfer[i].cmd_desc[0] |= CMD_0_ROC;
230 	xfer[last].cmd_desc[0] |= CMD_0_TOC;
231 	xfer[last].completion = &done;
234 		xfer--;
236 	ret = hci->io->queue_xfer(hci, xfer, nxfers);
240 	    hci->io->dequeue_xfer(hci, xfer, nxfers)) {
247 				RESP_DATA_LENGTH(xfer[i].response);
248 		switch (RESP_STATUS(xfer[i].response)) {
266 	hci_free_xfer(xfer, nxfers);
280 				       struct hci_xfer *xfer)
283 	    xfer->data == NULL || !is_vmalloc_addr(xfer->data))
286 	if (xfer->rnw)
287 		xfer->bounce_buf = kzalloc(xfer->data_len, GFP_KERNEL);
289 		xfer->bounce_buf = kmemdup(xfer->data,
290 					   xfer->data_len, GFP_KERNEL);
292 	return xfer->bounce_buf == NULL ? -ENOMEM : 0;
296 				       struct hci_xfer *xfer)
298 	if (hci->io != &mipi_i3c_hci_dma || xfer->bounce_buf == NULL)
301 	if (xfer->rnw)
302 		memcpy(xfer->data, xfer->bounce_buf, xfer->data_len);
304 	kfree(xfer->bounce_buf);
313 	struct hci_xfer *xfer;
320 	xfer = hci_alloc_xfer(nxfers);
321 	if (!xfer)
327 		xfer[i].data_len = i3c_xfers[i].len;
329 		if (xfer[i].data_len >= size_limit)
331 		xfer[i].rnw = i3c_xfers[i].rnw;
333 			xfer[i].data = i3c_xfers[i].data.in;
336 			xfer[i].data = (void *) i3c_xfers[i].data.out;
338 		hci->cmd->prep_i3c_xfer(hci, dev, &xfer[i]);
339 		xfer[i].cmd_desc[0] |= CMD_0_ROC;
340 		ret = i3c_hci_alloc_safe_xfer_buf(hci, &xfer[i]);
345 	xfer[last].cmd_desc[0] |= CMD_0_TOC;
346 	xfer[last].completion = &done;
348 	ret = hci->io->queue_xfer(hci, xfer, nxfers);
352 	    hci->io->dequeue_xfer(hci, xfer, nxfers)) {
358 			i3c_xfers[i].len = RESP_DATA_LENGTH(xfer[i].response);
359 		if (RESP_STATUS(xfer[i].response) != RESP_SUCCESS) {
367 		i3c_hci_free_safe_xfer_buf(hci, &xfer[i]);
369 	hci_free_xfer(xfer, nxfers);
378 	struct hci_xfer *xfer;
384 	xfer = hci_alloc_xfer(nxfers);
385 	if (!xfer)
389 		xfer[i].data = i2c_xfers[i].buf;
390 		xfer[i].data_len = i2c_xfers[i].len;
391 		xfer[i].rnw = i2c_xfers[i].flags & I2C_M_RD;
392 		hci->cmd->prep_i2c_xfer(hci, dev, &xfer[i]);
393 		xfer[i].cmd_desc[0] |= CMD_0_ROC;
394 		ret = i3c_hci_alloc_safe_xfer_buf(hci, &xfer[i]);
399 	xfer[last].cmd_desc[0] |= CMD_0_TOC;
400 	xfer[last].completion = &done;
402 	ret = hci->io->queue_xfer(hci, xfer, nxfers);
406 	    hci->io->dequeue_xfer(hci, xfer, nxfers)) {
411 		if (RESP_STATUS(xfer[i].response) != RESP_SUCCESS) {
419 		i3c_hci_free_safe_xfer_buf(hci, &xfer[i]);
421 	hci_free_xfer(xfer, nxfers);