From: Vidya Sagar <vidyas@nvidia.com>
To: <jingoohan1@gmail.com>, <gustavo.pimentel@synopsys.com>,
<lorenzo.pieralisi@arm.com>, <bhelgaas@google.com>,
<amurray@thegoodpenguin.co.uk>, <robh@kernel.org>,
<treding@nvidia.com>, <jonathanh@nvidia.com>
Cc: <linux-pci@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
<kthota@nvidia.com>, <mmaddireddy@nvidia.com>,
<vidyas@nvidia.com>, <sagar.tv@gmail.com>
Subject: [PATCH 2/3] PCI: dwc: Add support to program ATU for >4GB memory aperture sizes
Date: Sat, 24 Oct 2020 01:26:54 +0530 [thread overview]
Message-ID: <20201023195655.11242-3-vidyas@nvidia.com> (raw)
In-Reply-To: <20201023195655.11242-1-vidyas@nvidia.com>
Add support to program the ATU to enable translations for >4GB sizes of
the prefetchable memory apertures.
Signed-off-by: Vidya Sagar <vidyas@nvidia.com>
---
drivers/pci/controller/dwc/pcie-designware.c | 12 +++++++-----
drivers/pci/controller/dwc/pcie-designware.h | 3 ++-
2 files changed, 9 insertions(+), 6 deletions(-)
diff --git a/drivers/pci/controller/dwc/pcie-designware.c b/drivers/pci/controller/dwc/pcie-designware.c
index c2dea8fc97c8..b5e438b70cd5 100644
--- a/drivers/pci/controller/dwc/pcie-designware.c
+++ b/drivers/pci/controller/dwc/pcie-designware.c
@@ -228,7 +228,7 @@ static void dw_pcie_writel_ob_unroll(struct dw_pcie *pci, u32 index, u32 reg,
static void dw_pcie_prog_outbound_atu_unroll(struct dw_pcie *pci, u8 func_no,
int index, int type,
u64 cpu_addr, u64 pci_addr,
- u32 size)
+ u64 size)
{
u32 retries, val;
u64 limit_addr = cpu_addr + size - 1;
@@ -245,8 +245,10 @@ static void dw_pcie_prog_outbound_atu_unroll(struct dw_pcie *pci, u8 func_no,
lower_32_bits(pci_addr));
dw_pcie_writel_ob_unroll(pci, index, PCIE_ATU_UNR_UPPER_TARGET,
upper_32_bits(pci_addr));
- dw_pcie_writel_ob_unroll(pci, index, PCIE_ATU_UNR_REGION_CTRL1,
- type | PCIE_ATU_FUNC_NUM(func_no));
+ val = type | PCIE_ATU_FUNC_NUM(func_no);
+ val = upper_32_bits(size - 1) ?
+ val | PCIE_ATU_INCREASE_REGION_SIZE : val;
+ dw_pcie_writel_ob_unroll(pci, index, PCIE_ATU_UNR_REGION_CTRL1, val);
dw_pcie_writel_ob_unroll(pci, index, PCIE_ATU_UNR_REGION_CTRL2,
PCIE_ATU_ENABLE);
@@ -267,7 +269,7 @@ static void dw_pcie_prog_outbound_atu_unroll(struct dw_pcie *pci, u8 func_no,
static void __dw_pcie_prog_outbound_atu(struct dw_pcie *pci, u8 func_no,
int index, int type, u64 cpu_addr,
- u64 pci_addr, u32 size)
+ u64 pci_addr, u64 size)
{
u32 retries, val;
@@ -311,7 +313,7 @@ static void __dw_pcie_prog_outbound_atu(struct dw_pcie *pci, u8 func_no,
}
void dw_pcie_prog_outbound_atu(struct dw_pcie *pci, int index, int type,
- u64 cpu_addr, u64 pci_addr, u32 size)
+ u64 cpu_addr, u64 pci_addr, u64 size)
{
__dw_pcie_prog_outbound_atu(pci, 0, index, type,
cpu_addr, pci_addr, size);
diff --git a/drivers/pci/controller/dwc/pcie-designware.h b/drivers/pci/controller/dwc/pcie-designware.h
index 9d2f511f13fa..e7f441441db2 100644
--- a/drivers/pci/controller/dwc/pcie-designware.h
+++ b/drivers/pci/controller/dwc/pcie-designware.h
@@ -84,6 +84,7 @@
#define PCIE_ATU_REGION_INDEX1 0x1
#define PCIE_ATU_REGION_INDEX0 0x0
#define PCIE_ATU_CR1 0x904
+#define PCIE_ATU_INCREASE_REGION_SIZE BIT(13)
#define PCIE_ATU_TYPE_MEM 0x0
#define PCIE_ATU_TYPE_IO 0x2
#define PCIE_ATU_TYPE_CFG0 0x4
@@ -295,7 +296,7 @@ void dw_pcie_upconfig_setup(struct dw_pcie *pci);
int dw_pcie_wait_for_link(struct dw_pcie *pci);
void dw_pcie_prog_outbound_atu(struct dw_pcie *pci, int index,
int type, u64 cpu_addr, u64 pci_addr,
- u32 size);
+ u64 size);
void dw_pcie_prog_ep_outbound_atu(struct dw_pcie *pci, u8 func_no, int index,
int type, u64 cpu_addr, u64 pci_addr,
u32 size);
--
2.17.1
next prev parent reply other threads:[~2020-10-23 19:57 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-23 19:56 [PATCH 0/3] Add support to handle prefetchable memory Vidya Sagar
2020-10-23 19:56 ` [PATCH 1/3] PCI: of: Warn if non-prefetchable memory aperture size is > 32-bit Vidya Sagar
2020-10-26 17:51 ` Rob Herring
2020-10-23 19:56 ` Vidya Sagar [this message]
2020-10-26 17:51 ` [PATCH 2/3] PCI: dwc: Add support to program ATU for >4GB memory aperture sizes Rob Herring
2020-10-23 19:56 ` [PATCH 3/3] PCI: dwc: Add support to handle prefetchable memory mapping Vidya Sagar
2020-10-26 15:40 ` Rob Herring
2020-10-24 4:03 ` [PATCH 0/3] Add support to handle prefetchable memory Jingoo Han
2020-10-26 12:32 ` Thierry Reding
2020-11-04 7:46 ` Vidya Sagar
2020-11-17 4:38 ` Vidya Sagar
2020-11-17 12:10 ` [PATCH 0/3] Add support to handle prefetchable memoryg Lorenzo Pieralisi
2020-11-17 17:34 ` Vidya Sagar
2020-11-18 10:29 ` [PATCH 0/3] Add support to handle prefetchable memory Lorenzo Pieralisi
2020-11-04 9:50 ` Jon Hunter
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