From: Bjorn Helgaas <bhelgaas@google.com>
To: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Cc: linux-pci@vger.kernel.org
Subject: [PATCH v2 3/6] PCI: armada: Remove redundant struct armada8k_pcie.base
Date: Wed, 12 Oct 2016 08:25:36 -0500 [thread overview]
Message-ID: <20161012132536.26736.44459.stgit@bhelgaas-glaptop2.roam.corp.google.com> (raw)
In-Reply-To: <20161012131957.26736.14194.stgit@bhelgaas-glaptop2.roam.corp.google.com>
The struct armada8k_pcie.base pointer is always a constant offset from
struct pcie_port.dbi_base. Encode that offset in the register macros so we
don't need to maintain the armada8k_pcie.base pointer. No functional
change intended.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
---
drivers/pci/host/pcie-armada8k.c | 25 +++++++++++--------------
1 file changed, 11 insertions(+), 14 deletions(-)
diff --git a/drivers/pci/host/pcie-armada8k.c b/drivers/pci/host/pcie-armada8k.c
index 121f6c8..cfa50f5 100644
--- a/drivers/pci/host/pcie-armada8k.c
+++ b/drivers/pci/host/pcie-armada8k.c
@@ -29,34 +29,33 @@
#include "pcie-designware.h"
struct armada8k_pcie {
- void __iomem *base;
struct clk *clk;
struct pcie_port pp;
};
#define PCIE_VENDOR_REGS_OFFSET 0x8000
-#define PCIE_GLOBAL_CONTROL_REG 0x0
+#define PCIE_GLOBAL_CONTROL_REG (PCIE_VENDOR_REGS_OFFSET + 0x0)
#define PCIE_APP_LTSSM_EN BIT(2)
#define PCIE_DEVICE_TYPE_SHIFT 4
#define PCIE_DEVICE_TYPE_MASK 0xF
#define PCIE_DEVICE_TYPE_RC 0x4 /* Root complex */
-#define PCIE_GLOBAL_STATUS_REG 0x8
+#define PCIE_GLOBAL_STATUS_REG (PCIE_VENDOR_REGS_OFFSET + 0x8)
#define PCIE_GLB_STS_RDLH_LINK_UP BIT(1)
#define PCIE_GLB_STS_PHY_LINK_UP BIT(9)
-#define PCIE_GLOBAL_INT_CAUSE1_REG 0x1C
-#define PCIE_GLOBAL_INT_MASK1_REG 0x20
+#define PCIE_GLOBAL_INT_CAUSE1_REG (PCIE_VENDOR_REGS_OFFSET + 0x1C)
+#define PCIE_GLOBAL_INT_MASK1_REG (PCIE_VENDOR_REGS_OFFSET + 0x20)
#define PCIE_INT_A_ASSERT_MASK BIT(9)
#define PCIE_INT_B_ASSERT_MASK BIT(10)
#define PCIE_INT_C_ASSERT_MASK BIT(11)
#define PCIE_INT_D_ASSERT_MASK BIT(12)
-#define PCIE_ARCACHE_TRC_REG 0x50
-#define PCIE_AWCACHE_TRC_REG 0x54
-#define PCIE_ARUSER_REG 0x5C
-#define PCIE_AWUSER_REG 0x60
+#define PCIE_ARCACHE_TRC_REG (PCIE_VENDOR_REGS_OFFSET + 0x50)
+#define PCIE_AWCACHE_TRC_REG (PCIE_VENDOR_REGS_OFFSET + 0x54)
+#define PCIE_ARUSER_REG (PCIE_VENDOR_REGS_OFFSET + 0x5C)
+#define PCIE_AWUSER_REG (PCIE_VENDOR_REGS_OFFSET + 0x60)
/*
* AR/AW Cache defauls: Normal memory, Write-Back, Read / Write
* allocate
@@ -73,7 +72,7 @@ struct armada8k_pcie {
static int armada8k_pcie_link_up(struct pcie_port *pp)
{
struct armada8k_pcie *pcie = to_armada8k_pcie(pp);
- void __iomem *base = pcie->base;
+ void __iomem *base = pcie->pp.dbi_base;
u32 reg;
u32 mask = PCIE_GLB_STS_RDLH_LINK_UP | PCIE_GLB_STS_PHY_LINK_UP;
@@ -89,7 +88,7 @@ static int armada8k_pcie_link_up(struct pcie_port *pp)
static void armada8k_pcie_establish_link(struct pcie_port *pp)
{
struct armada8k_pcie *pcie = to_armada8k_pcie(pp);
- void __iomem *base = pcie->base;
+ void __iomem *base = pcie->pp.dbi_base;
u32 reg;
if (!dw_pcie_link_up(pp)) {
@@ -148,7 +147,7 @@ static irqreturn_t armada8k_pcie_irq_handler(int irq, void *arg)
{
struct pcie_port *pp = arg;
struct armada8k_pcie *pcie = to_armada8k_pcie(pp);
- void __iomem *base = pcie->base;
+ void __iomem *base = pcie->pp.dbi_base;
u32 val;
/*
@@ -228,8 +227,6 @@ static int armada8k_pcie_probe(struct platform_device *pdev)
goto fail;
}
- pcie->base = pp->dbi_base + PCIE_VENDOR_REGS_OFFSET;
-
ret = armada8k_add_pcie_port(pp, pdev);
if (ret)
goto fail;
next prev parent reply other threads:[~2016-10-12 13:25 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-10-12 13:25 [PATCH v2 0/6] PCI: armada: Cleanups Bjorn Helgaas
2016-10-12 13:25 ` [PATCH v2 1/6] PCI: armada: Remove unused platform data Bjorn Helgaas
2016-10-12 13:25 ` [PATCH v2 2/6] PCI: armada: Add local base pointer Bjorn Helgaas
2016-10-12 13:25 ` Bjorn Helgaas [this message]
2016-10-12 13:25 ` [PATCH v2 4/6] PCI: armada: Use generic DesignWare accessors Bjorn Helgaas
2016-10-12 13:25 ` [PATCH v2 5/6] PCI: armada: Pass device-specific struct to internal functions Bjorn Helgaas
2016-10-12 13:26 ` [PATCH v2 6/6] PCI: armada: Reorder struct armada8k_pcie Bjorn Helgaas
2016-10-12 16:04 ` [PATCH v2 0/6] PCI: armada: Cleanups Bjorn Helgaas
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