/* Helpers for initialising and "incrementing" a frame descriptor */
static void fd_init(struct qm_fd *__fd)
{
qm_fd_addr_set64(__fd, 0xabdeadbeefLLU);
__fd->format = qm_fd_contig_big;
__fd->length29 = 7;
__fd->cmd = 0xfeedf00d;
}
int caam_qi_enqueue(struct device *qidev, struct caam_drv_req *req)
{
struct qm_fd fd;
dma_addr_t addr;
int ret;
int num_retries = 0;
qm_fd_clear_fd(&fd);
qm_fd_set_compound(&fd, qm_sg_entry_get_len(&req->fd_sgt[1]));
addr = dma_map_single(qidev, req->fd_sgt, sizeof(req->fd_sgt),
DMA_BIDIRECTIONAL);
if (dma_mapping_error(qidev, addr)) {
dev_err(qidev, "DMA mapping error for QI enqueue request\n");
return -EIO;
}
qm_fd_addr_set64(&fd, addr);
do {
ret = qman_enqueue(req->drv_ctx->req_fq, &fd);
if (likely(!ret))
return 0;
if (ret != -EBUSY)
break;
num_retries++;
} while (num_retries < CAAM_QI_ENQUEUE_RETRIES);
dev_err(qidev, "qman_enqueue failed: %d\n", ret);
return ret;
}
void pme_fd_cmd_fcw(struct qm_fd *fd, u8 flags, struct pme_flow *flow,
struct pme_hw_residue *residue)
{
dma_addr_t f;
struct pme_cmd_flow_write *fcw = (struct pme_cmd_flow_write *)&fd->cmd;
BUG_ON(!flow);
BUG_ON((unsigned long)flow & 31);
fcw->cmd = pme_cmd_flow_write;
fcw->flags = flags;
if (flags & PME_CMD_FCW_RES) {
if (residue) {
dma_addr_t rptr = residue_map(residue);
BUG_ON(!residue);
BUG_ON((unsigned long)residue & 63);
pme_flow_rptr_set64(flow, rptr);
} else
pme_flow_rptr_set64(flow, 0);
}
f = flow_map(flow);
qm_fd_addr_set64(fd, f);
fd->format = qm_fd_contig;
fd->offset = 0;
fd->length20 = sizeof(*flow);
}
static void fd_inc(struct qm_fd *__fd)
{
u64 t = qm_fd_addr_get64(__fd);
int z = t >> 40;
t <<= 1;
if (z)
t |= 1;
qm_fd_addr_set64(__fd, t);
__fd->length29--;
__fd->cmd++;
}
void pme_fd_cmd_fcr(struct qm_fd *fd, struct pme_flow *flow)
{
dma_addr_t f;
struct pme_cmd_flow_read *fcr = (struct pme_cmd_flow_read *)&fd->cmd;
BUG_ON(!flow);
BUG_ON((unsigned long)flow & 31);
fcr->cmd = pme_cmd_flow_read;
f = flow_map(flow);
qm_fd_addr_set64(fd, f);
fd->format = qm_fd_contig;
fd->offset = 0;
fd->length20 = sizeof(*flow);
}
static void fd_inc(struct qm_fd *fd)
{
u64 t = qm_fd_addr_get64(fd);
int z = t >> 40;
unsigned int len, off;
enum qm_fd_format fmt;
t <<= 1;
if (z)
t |= 1;
qm_fd_addr_set64(fd, t);
fmt = qm_fd_get_format(fd);
off = qm_fd_get_offset(fd);
len = qm_fd_get_length(fd);
len--;
qm_fd_set_param(fd, fmt, off, len);
fd->cmd = cpu_to_be32(be32_to_cpu(fd->cmd) + 1);
}
/* Helpers for initialising and "incrementing" a frame descriptor */
static void fd_init(struct qm_fd *fd)
{
qm_fd_addr_set64(fd, 0xabdeadbeefLLU);
qm_fd_set_contig_big(fd, 0x0000ffff);
fd->cmd = cpu_to_be32(0xfeedf00d);
}
