brcmfmac: determine host controller related variables during probe
Instead of determining the limits for scatter-gather MMC transfer
request upon each transmit it is now determined during the probe
of the SDIO function.
Reviewed-by: Franky Lin <frankyl@broadcom.com>
Reviewed-by: Hante Meuleman <meuleman@broadcom.com>
Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com>
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
diff --git a/drivers/net/wireless/brcm80211/brcmfmac/bcmsdh_sdmmc.c b/drivers/net/wireless/brcm80211/brcmfmac/bcmsdh_sdmmc.c
index 091c905..c768ec2 100644
--- a/drivers/net/wireless/brcm80211/brcmfmac/bcmsdh_sdmmc.c
+++ b/drivers/net/wireless/brcm80211/brcmfmac/bcmsdh_sdmmc.c
@@ -21,6 +21,7 @@
#include <linux/mmc/sdio_func.h>
#include <linux/mmc/sdio_ids.h>
#include <linux/mmc/card.h>
+#include <linux/mmc/host.h>
#include <linux/suspend.h>
#include <linux/errno.h>
#include <linux/sched.h> /* request_irq() */
@@ -315,6 +316,8 @@
int err;
struct brcmf_sdio_dev *sdiodev;
struct brcmf_bus *bus_if;
+ struct mmc_host *host;
+ uint max_blocks;
brcmf_dbg(SDIO, "Enter\n");
brcmf_dbg(SDIO, "Class=%x\n", func->class);
@@ -361,6 +364,20 @@
brcmf_err("F2 error, probe failed %d...\n", err);
goto fail;
}
+
+ /*
+ * determine host related variables after brcmf_sdio_probe()
+ * as func->cur_blksize is properly set and F2 init has been
+ * completed successfully.
+ */
+ host = func->card->host;
+ sdiodev->sg_support = host->max_segs > 1;
+ max_blocks = min_t(uint, host->max_blk_count, 511u);
+ sdiodev->max_request_size = min_t(uint, host->max_req_size,
+ max_blocks * func->cur_blksize);
+ sdiodev->max_segment_count = min_t(uint, host->max_segs,
+ SG_MAX_SINGLE_ALLOC);
+ sdiodev->max_segment_size = host->max_seg_size;
brcmf_dbg(SDIO, "F2 init completed...\n");
return 0;