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-rw-r--r--package/kernel/mac80211/patches/311-v4.16-0007-brcmfmac-Remove-brcmf_sdiod_request_data.patch344
1 files changed, 344 insertions, 0 deletions
diff --git a/package/kernel/mac80211/patches/311-v4.16-0007-brcmfmac-Remove-brcmf_sdiod_request_data.patch b/package/kernel/mac80211/patches/311-v4.16-0007-brcmfmac-Remove-brcmf_sdiod_request_data.patch
new file mode 100644
index 0000000000..beaa4d3a29
--- /dev/null
+++ b/package/kernel/mac80211/patches/311-v4.16-0007-brcmfmac-Remove-brcmf_sdiod_request_data.patch
@@ -0,0 +1,344 @@
+From 993a98a42e6e790fd0d2bf7d55a031513c7ba7dc Mon Sep 17 00:00:00 2001
+From: Ian Molton <ian@mnementh.co.uk>
+Date: Mon, 13 Nov 2017 21:35:44 +0100
+Subject: [PATCH] brcmfmac: Remove brcmf_sdiod_request_data()
+
+This function is obfuscating how IO works on this chip. Remove it
+and push its logic into brcmf_sdiod_reg_{read,write}().
+
+Handling of -ENOMEDIUM is altered, but as that's pretty much broken anyway
+we can ignore that.
+
+Signed-off-by: Ian Molton <ian@mnementh.co.uk>
+Signed-off-by: Arend van Spriel <arend.vanspriel@broadcom.com>
+Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
+---
+ .../wireless/broadcom/brcm80211/brcmfmac/bcmsdh.c | 237 ++++++++-------------
+ .../wireless/broadcom/brcm80211/brcmfmac/sdio.h | 2 +-
+ 2 files changed, 87 insertions(+), 152 deletions(-)
+
+--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcmsdh.c
++++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcmsdh.c
+@@ -230,6 +230,43 @@ void brcmf_sdiod_change_state(struct brc
+ sdiodev->state = state;
+ }
+
++static int brcmf_sdiod_set_sbaddr_window(struct brcmf_sdio_dev *sdiodev,
++ u32 address)
++{
++ int err = 0, i;
++ u32 addr;
++
++ if (sdiodev->state == BRCMF_SDIOD_NOMEDIUM)
++ return -ENOMEDIUM;
++
++ addr = (address & SBSDIO_SBWINDOW_MASK) >> 8;
++
++ for (i = 0 ; i < 3 && !err ; i++, addr >>= 8)
++ brcmf_sdiod_regwb(sdiodev, SBSDIO_FUNC1_SBADDRLOW + i,
++ addr & 0xff, &err);
++
++ return err;
++}
++
++static int brcmf_sdiod_addrprep(struct brcmf_sdio_dev *sdiodev, u32 *addr)
++{
++ uint bar0 = *addr & ~SBSDIO_SB_OFT_ADDR_MASK;
++ int err = 0;
++
++ if (bar0 != sdiodev->sbwad) {
++ err = brcmf_sdiod_set_sbaddr_window(sdiodev, bar0);
++ if (err)
++ return err;
++
++ sdiodev->sbwad = bar0;
++ }
++
++ *addr &= SBSDIO_SB_OFT_ADDR_MASK;
++ *addr |= SBSDIO_SB_ACCESS_2_4B_FLAG;
++
++ return 0;
++}
++
+ static inline int brcmf_sdiod_f0_writeb(struct sdio_func *func, u8 byte,
+ uint regaddr)
+ {
+@@ -249,173 +286,84 @@ static inline int brcmf_sdiod_f0_writeb(
+ return err_ret;
+ }
+
+-static int brcmf_sdiod_request_data(struct brcmf_sdio_dev *sdiodev, u8 fn,
+- u32 addr, u8 regsz, void *data, bool write)
+-{
+- struct sdio_func *func;
+- int ret = -EINVAL;
+-
+- brcmf_dbg(SDIO, "rw=%d, func=%d, addr=0x%05x, nbytes=%d\n",
+- write, fn, addr, regsz);
+-
+- /* only allow byte access on F0 */
+- if (WARN_ON(regsz > 1 && !fn))
+- return -EINVAL;
+- func = sdiodev->func[fn];
+-
+- switch (regsz) {
+- case 1:
+- if (write) {
+- if (fn)
+- sdio_writeb(func, *(u8 *)data, addr, &ret);
+- else
+- ret = brcmf_sdiod_f0_writeb(func, *(u8 *)data,
+- addr);
+- } else {
+- if (fn)
+- *(u8 *)data = sdio_readb(func, addr, &ret);
+- else
+- *(u8 *)data = sdio_f0_readb(func, addr, &ret);
+- }
+- break;
+- case 2:
+- if (write)
+- sdio_writew(func, *(u16 *)data, addr, &ret);
+- else
+- *(u16 *)data = sdio_readw(func, addr, &ret);
+- break;
+- case 4:
+- if (write)
+- sdio_writel(func, *(u32 *)data, addr, &ret);
+- else
+- *(u32 *)data = sdio_readl(func, addr, &ret);
+- break;
+- default:
+- brcmf_err("invalid size: %d\n", regsz);
+- break;
+- }
+-
+- if (ret)
+- brcmf_dbg(SDIO, "failed to %s data F%d@0x%05x, err: %d\n",
+- write ? "write" : "read", fn, addr, ret);
+-
+- return ret;
+-}
+-
+ static int brcmf_sdiod_reg_write(struct brcmf_sdio_dev *sdiodev, u32 addr,
+ u8 regsz, void *data)
+ {
+- u8 func;
+- s32 retry = 0;
+ int ret;
+
+- if (sdiodev->state == BRCMF_SDIOD_NOMEDIUM)
+- return -ENOMEDIUM;
+-
+ /*
+ * figure out how to read the register based on address range
+ * 0x00 ~ 0x7FF: function 0 CCCR and FBR
+ * 0x10000 ~ 0x1FFFF: function 1 miscellaneous registers
+ * The rest: function 1 silicon backplane core registers
++ * f0 writes must be bytewise
+ */
+- if ((addr & ~REG_F0_REG_MASK) == 0)
+- func = SDIO_FUNC_0;
+- else
+- func = SDIO_FUNC_1;
+
+- do {
+- /* for retry wait for 1 ms till bus get settled down */
+- if (retry)
+- usleep_range(1000, 2000);
+-
+- ret = brcmf_sdiod_request_data(sdiodev, func, addr, regsz,
+- data, true);
+-
+- } while (ret != 0 && ret != -ENOMEDIUM &&
+- retry++ < SDIOH_API_ACCESS_RETRY_LIMIT);
++ if ((addr & ~REG_F0_REG_MASK) == 0) {
++ if (WARN_ON(regsz > 1))
++ return -EINVAL;
++ ret = brcmf_sdiod_f0_writeb(sdiodev->func[0],
++ *(u8 *)data, addr);
++ } else {
++ switch (regsz) {
++ case 1:
++ sdio_writeb(sdiodev->func[1], *(u8 *)data, addr, &ret);
++ break;
++ case 4:
++ ret = brcmf_sdiod_addrprep(sdiodev, &addr);
++ if (ret)
++ goto done;
+
+- if (ret == -ENOMEDIUM)
+- brcmf_sdiod_change_state(sdiodev, BRCMF_SDIOD_NOMEDIUM);
++ sdio_writel(sdiodev->func[1], *(u32 *)data, addr, &ret);
++ break;
++ default:
++ WARN(1, "Invalid reg size\n");
++ ret = -EINVAL;
++ break;
++ }
++ }
+
++done:
+ return ret;
+ }
+
+ static int brcmf_sdiod_reg_read(struct brcmf_sdio_dev *sdiodev, u32 addr,
+ u8 regsz, void *data)
+ {
+- u8 func;
+- s32 retry = 0;
+ int ret;
+
+- if (sdiodev->state == BRCMF_SDIOD_NOMEDIUM)
+- return -ENOMEDIUM;
+-
+ /*
+ * figure out how to read the register based on address range
+ * 0x00 ~ 0x7FF: function 0 CCCR and FBR
+ * 0x10000 ~ 0x1FFFF: function 1 miscellaneous registers
+ * The rest: function 1 silicon backplane core registers
++ * f0 reads must be bytewise
+ */
+- if ((addr & ~REG_F0_REG_MASK) == 0)
+- func = SDIO_FUNC_0;
+- else
+- func = SDIO_FUNC_1;
+-
+- do {
+- memset(data, 0, regsz);
+-
+- /* for retry wait for 1 ms till bus get settled down */
+- if (retry)
+- usleep_range(1000, 2000);
+-
+- ret = brcmf_sdiod_request_data(sdiodev, func, addr, regsz,
+- data, false);
+-
+- } while (ret != 0 && ret != -ENOMEDIUM &&
+- retry++ < SDIOH_API_ACCESS_RETRY_LIMIT);
+-
+- if (ret == -ENOMEDIUM)
+- brcmf_sdiod_change_state(sdiodev, BRCMF_SDIOD_NOMEDIUM);
+-
+- return ret;
+-}
+-
+-static int
+-brcmf_sdiod_set_sbaddr_window(struct brcmf_sdio_dev *sdiodev, u32 address)
+-{
+- int err = 0, i;
+- u32 addr;
+-
+- if (sdiodev->state == BRCMF_SDIOD_NOMEDIUM)
+- return -ENOMEDIUM;
+-
+- addr = (address & SBSDIO_SBWINDOW_MASK) >> 8;
+-
+- for (i = 0 ; i < 3 && !err ; i++, addr >>= 8)
+- brcmf_sdiod_regwb(sdiodev, SBSDIO_FUNC1_SBADDRLOW + i,
+- addr & 0xff, &err);
+-
+- return err;
+-}
+-
+-static int
+-brcmf_sdiod_addrprep(struct brcmf_sdio_dev *sdiodev, u32 *addr)
+-{
+- uint bar0 = *addr & ~SBSDIO_SB_OFT_ADDR_MASK;
+- int err = 0;
+-
+- if (bar0 != sdiodev->sbwad) {
+- err = brcmf_sdiod_set_sbaddr_window(sdiodev, bar0);
+- if (err)
+- return err;
++ if ((addr & ~REG_F0_REG_MASK) == 0) {
++ if (WARN_ON(regsz > 1))
++ return -EINVAL;
++ *(u8 *)data = sdio_f0_readb(sdiodev->func[0], addr, &ret);
++ } else {
++ switch (regsz) {
++ case 1:
++ *(u8 *)data = sdio_readb(sdiodev->func[1], addr, &ret);
++ break;
++ case 4:
++ ret = brcmf_sdiod_addrprep(sdiodev, &addr);
++ if (ret)
++ goto done;
+
+- sdiodev->sbwad = bar0;
++ *(u32 *)data = sdio_readl(sdiodev->func[1], addr, &ret);
++ break;
++ default:
++ WARN(1, "Invalid reg size\n");
++ ret = -EINVAL;
++ break;
++ }
+ }
+
+- *addr &= SBSDIO_SB_OFT_ADDR_MASK;
+- *addr |= SBSDIO_SB_ACCESS_2_4B_FLAG;
+-
+- return 0;
++done:
++ return ret;
+ }
+
+ u8 brcmf_sdiod_regrb(struct brcmf_sdio_dev *sdiodev, u32 addr, int *ret)
+@@ -439,15 +387,9 @@ u32 brcmf_sdiod_regrl(struct brcmf_sdio_
+ int retval;
+
+ brcmf_dbg(SDIO, "addr:0x%08x\n", addr);
+- retval = brcmf_sdiod_addrprep(sdiodev, &addr);
+- if (retval)
+- goto done;
+-
+ retval = brcmf_sdiod_reg_read(sdiodev, addr, 4, &data);
+-
+ brcmf_dbg(SDIO, "data:0x%08x\n", data);
+
+-done:
+ if (ret)
+ *ret = retval;
+
+@@ -472,13 +414,8 @@ void brcmf_sdiod_regwl(struct brcmf_sdio
+ int retval;
+
+ brcmf_dbg(SDIO, "addr:0x%08x, data:0x%08x\n", addr, data);
+- retval = brcmf_sdiod_addrprep(sdiodev, &addr);
+- if (retval)
+- goto done;
+-
+ retval = brcmf_sdiod_reg_write(sdiodev, addr, 4, &data);
+
+-done:
+ if (ret)
+ *ret = retval;
+ }
+@@ -886,14 +823,12 @@ brcmf_sdiod_ramrw(struct brcmf_sdio_dev
+ return bcmerror;
+ }
+
+-int brcmf_sdiod_abort(struct brcmf_sdio_dev *sdiodev, uint fn)
++int brcmf_sdiod_abort(struct brcmf_sdio_dev *sdiodev, u8 fn)
+ {
+- char t_func = (char)fn;
+ brcmf_dbg(SDIO, "Enter\n");
+
+ /* issue abort cmd52 command through F0 */
+- brcmf_sdiod_request_data(sdiodev, SDIO_FUNC_0, SDIO_CCCR_ABORT,
+- 1, &t_func, true);
++ brcmf_sdiod_reg_write(sdiodev, SDIO_CCCR_ABORT, 1, &fn);
+
+ brcmf_dbg(SDIO, "Exit\n");
+ return 0;
+--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.h
++++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.h
+@@ -339,7 +339,7 @@ int brcmf_sdiod_ramrw(struct brcmf_sdio_
+ u8 *data, uint size);
+
+ /* Issue an abort to the specified function */
+-int brcmf_sdiod_abort(struct brcmf_sdio_dev *sdiodev, uint fn);
++int brcmf_sdiod_abort(struct brcmf_sdio_dev *sdiodev, u8 fn);
+ void brcmf_sdiod_sgtable_alloc(struct brcmf_sdio_dev *sdiodev);
+ void brcmf_sdiod_change_state(struct brcmf_sdio_dev *sdiodev,
+ enum brcmf_sdiod_state state);
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-31 17:31:30 +0000