linux-kernel - [PATCH AUTOSEL 5.15 079/153] PCI: brcmstb: Expand inbound window size up to 64GB

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Message-Id: <20250505231320.2695319-79-sashal@kernel.org>
Date: Mon,  5 May 2025 19:12:06 -0400
From: Sasha Levin <sashal@...nel.org>
To: linux-kernel@...r.kernel.org,
	stable@...r.kernel.org
Cc: Stanimir Varbanov <svarbanov@...e.de>,
	Florian Fainelli <florian.fainelli@...adcom.com>,
	Jim Quinlan <james.quinlan@...adcom.com>,
	"Ivan T . Ivanov" <iivanov@...e.de>,
	Krzysztof Wilczyński <kwilczynski@...nel.org>,
	Sasha Levin <sashal@...nel.org>,
	jim2101024@...il.com,
	nsaenz@...nel.org,
	lpieralisi@...nel.org,
	kw@...ux.com,
	manivannan.sadhasivam@...aro.org,
	bhelgaas@...gle.com,
	linux-pci@...r.kernel.org,
	linux-rpi-kernel@...ts.infradead.org,
	linux-arm-kernel@...ts.infradead.org
Subject: [PATCH AUTOSEL 5.15 079/153] PCI: brcmstb: Expand inbound window size up to 64GB

From: Stanimir Varbanov <svarbanov@...e.de>

[ Upstream commit 25a98c727015638baffcfa236e3f37b70cedcf87 ]

The BCM2712 memory map can support up to 64GB of system memory, thus
expand the inbound window size in calculation helper function.

The change is safe for the currently supported SoCs that have smaller
inbound window sizes.

Signed-off-by: Stanimir Varbanov <svarbanov@...e.de>
Reviewed-by: Florian Fainelli <florian.fainelli@...adcom.com>
Reviewed-by: Jim Quinlan <james.quinlan@...adcom.com>
Tested-by: Ivan T. Ivanov <iivanov@...e.de>
Link: https://lore.kernel.org/r/20250224083559.47645-7-svarbanov@suse.de
[kwilczynski: commit log]
Signed-off-by: Krzysztof Wilczyński <kwilczynski@...nel.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/pci/controller/pcie-brcmstb.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/pci/controller/pcie-brcmstb.c b/drivers/pci/controller/pcie-brcmstb.c
index 6a676bde5e2c6..7121270787899 100644
--- a/drivers/pci/controller/pcie-brcmstb.c
+++ b/drivers/pci/controller/pcie-brcmstb.c
@@ -308,8 +308,8 @@ static int brcm_pcie_encode_ibar_size(u64 size)
 	if (log2_in >= 12 && log2_in <= 15)
 		/* Covers 4KB to 32KB (inclusive) */
 		return (log2_in - 12) + 0x1c;
-	else if (log2_in >= 16 && log2_in <= 35)
-		/* Covers 64KB to 32GB, (inclusive) */
+	else if (log2_in >= 16 && log2_in <= 36)
+		/* Covers 64KB to 64GB, (inclusive) */
 		return log2_in - 15;
 	/* Something is awry so disable */
 	return 0;
-- 
2.39.5