/* Maximum milliseconds to wait for F2 to come up */
#define SDIO_WAIT_F2RDY 3000
+#define BRCMF_DEFAULT_TXGLOM_SIZE 32 /* max tx frames in glom chain */
+#define BRCMF_DEFAULT_RXGLOM_SIZE 32 /* max rx frames in glom chain */
+
+static int brcmf_sdiod_txglomsz = BRCMF_DEFAULT_TXGLOM_SIZE;
+module_param_named(txglomsz, brcmf_sdiod_txglomsz, int, 0);
+MODULE_PARM_DESC(txglomsz, "maximum tx packet chain size [SDIO]");
static irqreturn_t brcmf_sdiod_oob_irqhandler(int irq, void *dev_id)
{
struct mmc_request mmc_req;
struct mmc_command mmc_cmd;
struct mmc_data mmc_dat;
- struct sg_table st;
struct scatterlist *sgl;
int ret = 0;
pkt_offset = 0;
pkt_next = target_list->next;
- if (sg_alloc_table(&st, max_seg_cnt, GFP_KERNEL)) {
- ret = -ENOMEM;
- goto exit;
- }
-
memset(&mmc_req, 0, sizeof(struct mmc_request));
memset(&mmc_cmd, 0, sizeof(struct mmc_command));
memset(&mmc_dat, 0, sizeof(struct mmc_data));
- mmc_dat.sg = st.sgl;
+ mmc_dat.sg = sdiodev->sgtable.sgl;
mmc_dat.blksz = func_blk_sz;
mmc_dat.flags = write ? MMC_DATA_WRITE : MMC_DATA_READ;
mmc_cmd.opcode = SD_IO_RW_EXTENDED;
while (seg_sz) {
req_sz = 0;
sg_cnt = 0;
- sgl = st.sgl;
+ sgl = sdiodev->sgtable.sgl;
/* prep sg table */
while (pkt_next != (struct sk_buff *)target_list) {
pkt_data = pkt_next->data + pkt_offset;
}
exit:
- sg_free_table(&st);
+ sg_init_table(sdiodev->sgtable.sgl, sdiodev->sgtable.orig_nents);
while ((pkt_next = __skb_dequeue(&local_list)) != NULL)
brcmu_pkt_buf_free_skb(pkt_next);
return 0;
}
+static void brcmf_sdiod_sgtable_alloc(struct brcmf_sdio_dev *sdiodev)
+{
+ uint nents;
+ int err;
+
+ if (!sdiodev->sg_support)
+ return;
+
+ nents = max_t(uint, BRCMF_DEFAULT_RXGLOM_SIZE, brcmf_sdiod_txglomsz);
+ nents += (nents >> 4) + 1;
+
+ WARN_ON(nents > sdiodev->max_segment_count);
+
+ brcmf_dbg(TRACE, "nents=%d\n", nents);
+ err = sg_alloc_table(&sdiodev->sgtable, nents, GFP_KERNEL);
+ if (err < 0) {
+ brcmf_err("allocation failed: disable scatter-gather");
+ sdiodev->sg_support = false;
+ }
+
+ sdiodev->txglomsz = brcmf_sdiod_txglomsz;
+}
+
static int brcmf_sdiod_remove(struct brcmf_sdio_dev *sdiodev)
{
if (sdiodev->bus) {
sdio_disable_func(sdiodev->func[1]);
sdio_release_host(sdiodev->func[1]);
+ sg_free_table(&sdiodev->sgtable);
sdiodev->sbwad = 0;
return 0;
SG_MAX_SINGLE_ALLOC);
sdiodev->max_segment_size = host->max_seg_size;
+ /* allocate scatter-gather table. sg support
+ * will be disabled upon allocation failure.
+ */
+ brcmf_sdiod_sgtable_alloc(sdiodev);
+
/* try to attach to the target device */
sdiodev->bus = brcmf_sdio_probe(sdiodev);
if (!sdiodev->bus) {
#define BRCMF_TXBOUND 20 /* Default for max tx frames in
one scheduling */
-#define BRCMF_DEFAULT_TXGLOM_SIZE 32 /* max tx frames in glom chain */
-
#define BRCMF_TXMINMAX 1 /* Max tx frames if rx still pending */
#define MEMBLOCK 2048 /* Block size used for downloading
#define ALIGNMENT 4
-static int brcmf_sdio_txglomsz = BRCMF_DEFAULT_TXGLOM_SIZE;
-module_param_named(txglomsz, brcmf_sdio_txglomsz, int, 0);
-MODULE_PARM_DESC(txglomsz, "maximum tx packet chain size [SDIO]");
-
enum brcmf_sdio_frmtype {
BRCMF_SDIO_FT_NORMAL,
BRCMF_SDIO_FT_SUPER,
__skb_queue_head_init(&pktq);
if (bus->txglom)
pkt_num = min_t(u8, bus->tx_max - bus->tx_seq,
- brcmf_sdio_txglomsz);
+ bus->sdiodev->txglomsz);
pkt_num = min_t(u32, pkt_num,
brcmu_pktq_mlen(&bus->txq, ~bus->flowcontrol));
spin_lock_bh(&bus->txqlock);