mac80211: brcmfmac: backport more kernel 5.4 changes

Patch getting RAM info got upstreamed. A debugging fs entry for testing
reset feature was added.

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>

1 files changed, 80 insertions, 0 deletions

diff --git a/package/kernel/mac80211/patches/brcm/109-v5.4-brcmfmac-get-chip-s-default-RAM-info-during-PCIe-set.patch b/package/kernel/mac80211/patches/brcm/109-v5.4-brcmfmac-get-chip-s-default-RAM-info-during-PCIe-set.patch
new file mode 100644
index 0000000000..b04e78c70e
--- /dev/null
+++ b/package/kernel/mac80211/patches/brcm/109-v5.4-brcmfmac-get-chip-s-default-RAM-info-during-PCIe-set.patch
@@ -0,0 +1,80 @@
+From 82f93cf46d6007ffa003b2d4a2834563b6b84d21 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
+Date: Thu, 29 Aug 2019 10:27:01 +0200
+Subject: [PATCH] brcmfmac: get chip's default RAM info during PCIe setup
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Getting RAM info just once per driver's lifetime (during chip
+recognition) is not enough as it may get adjusted later (depending on
+the used firmware). Subsequent inits may load different firmwares so a
+full RAM recognition is required on every PCIe setup. This is especially
+important since implementing hardware reset on a firmware crash.
+
+Moreover calling brcmf_chip_get_raminfo() makes sure that RAM core is
+up. It's important as having BCMA_CORE_SYS_MEM down on BCM4366 was
+resulting in firmware failing to initialize and following error:
+[   65.657546] brcmfmac 0000:01:00.0: brcmf_pcie_download_fw_nvram: Invalid shared RAM address 0x04000001
+
+This change makes brcmf_chip_get_raminfo() call during chip recognition
+redundant for PCIe devices but SDIO and USB still need it and it's a
+very small overhead anyway.
+
+Fixes: 4684997d9eea ("brcmfmac: reset PCIe bus on a firmware crash")
+Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
+Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
+---
+ drivers/net/wireless/broadcom/brcm80211/brcmfmac/chip.c | 6 ++++--
+ drivers/net/wireless/broadcom/brcm80211/brcmfmac/chip.h | 1 +
+ drivers/net/wireless/broadcom/brcm80211/brcmfmac/pcie.c | 6 ++++++
+ 3 files changed, 11 insertions(+), 2 deletions(-)
+
+--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/chip.c
++++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/chip.c
+@@ -696,8 +696,10 @@ static u32 brcmf_chip_tcm_rambase(struct
+ 	return 0;
+ }
+ 
+-static int brcmf_chip_get_raminfo(struct brcmf_chip_priv *ci)
++int brcmf_chip_get_raminfo(struct brcmf_chip *pub)
+ {
++	struct brcmf_chip_priv *ci = container_of(pub, struct brcmf_chip_priv,
++						  pub);
+ 	struct brcmf_core_priv *mem_core;
+ 	struct brcmf_core *mem;
+ 
+@@ -979,7 +981,7 @@ static int brcmf_chip_recognition(struct
+ 		brcmf_chip_set_passive(&ci->pub);
+ 	}
+ 
+-	return brcmf_chip_get_raminfo(ci);
++	return brcmf_chip_get_raminfo(&ci->pub);
+ }
+ 
+ static void brcmf_chip_disable_arm(struct brcmf_chip_priv *chip, u16 id)
+--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/chip.h
++++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/chip.h
+@@ -69,6 +69,7 @@ struct brcmf_buscore_ops {
+ 	void (*activate)(void *ctx, struct brcmf_chip *chip, u32 rstvec);
+ };
+ 
++int brcmf_chip_get_raminfo(struct brcmf_chip *pub);
+ struct brcmf_chip *brcmf_chip_attach(void *ctx,
+ 				     const struct brcmf_buscore_ops *ops);
+ void brcmf_chip_detach(struct brcmf_chip *chip);
+--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/pcie.c
++++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/pcie.c
+@@ -1770,6 +1770,12 @@ static void brcmf_pcie_setup(struct devi
+ 	nvram_len = fwreq->items[BRCMF_PCIE_FW_NVRAM].nv_data.len;
+ 	kfree(fwreq);
+ 
++	ret = brcmf_chip_get_raminfo(devinfo->ci);
++	if (ret) {
++		brcmf_err(bus, "Failed to get RAM info\n");
++		goto fail;
++	}
++
+ 	/* Some of the firmwares have the size of the memory of the device
+ 	 * defined inside the firmware. This is because part of the memory in
+ 	 * the device is shared and the devision is determined by FW. Parse