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.c b/drivers/net/wireless/brcm80211/brcmfmac/bcmsdh.c
index 5dfc96c..8c4b506 100644
--- a/drivers/net/wireless/brcm80211/brcmfmac/bcmsdh.c
+++ b/drivers/net/wireless/brcm80211/brcmfmac/bcmsdh.c
@@ -26,7 +26,6 @@
#include <linux/mmc/sdio.h>
#include <linux/mmc/sdio_func.h>
#include <linux/mmc/card.h>
-#include <linux/mmc/host.h>
#include <linux/platform_data/brcmfmac-sdio.h>
#include <defs.h>
@@ -331,7 +330,7 @@
bool write, u32 addr, struct sk_buff_head *pktlist)
{
unsigned int req_sz, func_blk_sz, sg_cnt, sg_data_sz, pkt_offset;
- unsigned int max_blks, max_req_sz, orig_offset, dst_offset;
+ unsigned int max_req_sz, orig_offset, dst_offset;
unsigned short max_seg_cnt, seg_sz;
unsigned char *pkt_data, *orig_data, *dst_data;
struct sk_buff *pkt_next = NULL, *local_pkt_next;
@@ -341,7 +340,6 @@
struct mmc_data mmc_dat;
struct sg_table st;
struct scatterlist *sgl;
- struct mmc_host *host;
int ret = 0;
if (!pktlist->qlen)
@@ -398,17 +396,10 @@
target_list = &local_list;
}
- host = sdiodev->func[fn]->card->host;
func_blk_sz = sdiodev->func[fn]->cur_blksize;
- /* Blocks per command is limited by host count, host transfer
- * size and the maximum for IO_RW_EXTENDED of 511 blocks.
- */
- max_blks = min_t(unsigned int, host->max_blk_count, 511u);
- max_req_sz = min_t(unsigned int, host->max_req_size,
- max_blks * func_blk_sz);
- max_seg_cnt = min_t(unsigned short, host->max_segs,
- SG_MAX_SINGLE_ALLOC);
- max_seg_cnt = min_t(unsigned short, max_seg_cnt, target_list->qlen);
+ max_req_sz = sdiodev->max_request_size;
+ max_seg_cnt = min_t(unsigned short, sdiodev->max_segment_count,
+ target_list->qlen);
seg_sz = target_list->qlen;
pkt_offset = 0;
pkt_next = target_list->next;
@@ -429,8 +420,8 @@
while (pkt_next != (struct sk_buff *)target_list) {
pkt_data = pkt_next->data + pkt_offset;
sg_data_sz = pkt_next->len - pkt_offset;
- if (sg_data_sz > host->max_seg_size)
- sg_data_sz = host->max_seg_size;
+ if (sg_data_sz > sdiodev->max_segment_size)
+ sg_data_sz = sdiodev->max_segment_size;
if (sg_data_sz > max_req_sz - req_sz)
sg_data_sz = max_req_sz - req_sz;
@@ -476,7 +467,7 @@
addr += req_sz;
mmc_set_data_timeout(&mmc_dat, sdiodev->func[fn]->card);
- mmc_wait_for_req(host, &mmc_req);
+ mmc_wait_for_req(sdiodev->func[fn]->card->host, &mmc_req);
ret = mmc_cmd.error ? mmc_cmd.error : mmc_dat.error;
if (ret != 0) {
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;
diff --git a/drivers/net/wireless/brcm80211/brcmfmac/sdio_host.h b/drivers/net/wireless/brcm80211/brcmfmac/sdio_host.h
index 2b5407f..59c456f 100644
--- a/drivers/net/wireless/brcm80211/brcmfmac/sdio_host.h
+++ b/drivers/net/wireless/brcm80211/brcmfmac/sdio_host.h
@@ -178,6 +178,10 @@
bool irq_en; /* irq enable flags */
spinlock_t irq_en_lock;
bool irq_wake; /* irq wake enable flags */
+ bool sg_support;
+ uint max_request_size;
+ ushort max_segment_count;
+ uint max_segment_size;
};
/* Register/deregister interrupt handler. */