[PATCH 2/2] pci: pci_mvebu: Cleanup macro names
Pali Rohár
pali at kernel.org
Fri Feb 18 12:25:23 CET 2022
Use "MVPCIE_" prefix instead of generic "PCIE_" prefix for pci_mvebu.c
specific macros. Define offset macros for Root Port registers and use
standard register macros from pci.h when accessing Root Port registers.
Signed-off-by: Pali Rohár <pali at kernel.org>
---
drivers/pci/pci_mvebu.c | 130 +++++++++++++++++++---------------------
1 file changed, 60 insertions(+), 70 deletions(-)
diff --git a/drivers/pci/pci_mvebu.c b/drivers/pci/pci_mvebu.c
index 16fe54fd366f..f07669374d70 100644
--- a/drivers/pci/pci_mvebu.c
+++ b/drivers/pci/pci_mvebu.c
@@ -30,35 +30,25 @@
#include <linux/sizes.h>
/* PCIe unit register offsets */
-#define PCIE_DEV_ID_OFF 0x0000
-#define PCIE_CMD_OFF 0x0004
-#define PCIE_DEV_REV_OFF 0x0008
-#define PCIE_BAR_LO_OFF(n) (0x0010 + ((n) << 3))
-#define PCIE_BAR_HI_OFF(n) (0x0014 + ((n) << 3))
-#define PCIE_EXP_ROM_BAR_OFF 0x0030
-#define PCIE_CAPAB_OFF 0x0060
-#define PCIE_CTRL_STAT_OFF 0x0068
-#define PCIE_HEADER_LOG_4_OFF 0x0128
-#define PCIE_BAR_CTRL_OFF(n) (0x1804 + (((n) - 1) * 4))
-#define PCIE_WIN04_CTRL_OFF(n) (0x1820 + ((n) << 4))
-#define PCIE_WIN04_BASE_OFF(n) (0x1824 + ((n) << 4))
-#define PCIE_WIN04_REMAP_OFF(n) (0x182c + ((n) << 4))
-#define PCIE_WIN5_CTRL_OFF 0x1880
-#define PCIE_WIN5_BASE_OFF 0x1884
-#define PCIE_WIN5_REMAP_OFF 0x188c
-#define PCIE_CONF_ADDR_OFF 0x18f8
-#define PCIE_CONF_DATA_OFF 0x18fc
-#define PCIE_MASK_OFF 0x1910
-#define PCIE_MASK_ENABLE_INTS (0xf << 24)
-#define PCIE_CTRL_OFF 0x1a00
-#define PCIE_CTRL_X1_MODE BIT(0)
-#define PCIE_CTRL_RC_MODE BIT(1)
-#define PCIE_STAT_OFF 0x1a04
-#define PCIE_STAT_BUS (0xff << 8)
-#define PCIE_STAT_DEV (0x1f << 16)
-#define PCIE_STAT_LINK_DOWN BIT(0)
-#define PCIE_DEBUG_CTRL 0x1a60
-#define PCIE_DEBUG_SOFT_RESET BIT(20)
+#define MVPCIE_ROOT_PORT_PCI_CFG_OFF 0x0000
+#define MVPCIE_ROOT_PORT_PCI_EXP_OFF 0x0060
+#define MVPCIE_BAR_LO_OFF(n) (0x0010 + ((n) << 3))
+#define MVPCIE_BAR_HI_OFF(n) (0x0014 + ((n) << 3))
+#define MVPCIE_BAR_CTRL_OFF(n) (0x1804 + (((n) - 1) * 4))
+#define MVPCIE_WIN04_CTRL_OFF(n) (0x1820 + ((n) << 4))
+#define MVPCIE_WIN04_BASE_OFF(n) (0x1824 + ((n) << 4))
+#define MVPCIE_WIN04_REMAP_OFF(n) (0x182c + ((n) << 4))
+#define MVPCIE_WIN5_CTRL_OFF 0x1880
+#define MVPCIE_WIN5_BASE_OFF 0x1884
+#define MVPCIE_WIN5_REMAP_OFF 0x188c
+#define MVPCIE_CONF_ADDR_OFF 0x18f8
+#define MVPCIE_CONF_DATA_OFF 0x18fc
+#define MVPCIE_CTRL_OFF 0x1a00
+#define MVPCIE_CTRL_RC_MODE BIT(1)
+#define MVPCIE_STAT_OFF 0x1a04
+#define MVPCIE_STAT_BUS (0xff << 8)
+#define MVPCIE_STAT_DEV (0x1f << 16)
+#define MVPCIE_STAT_LINK_DOWN BIT(0)
#define LINK_WAIT_RETRIES 100
#define LINK_WAIT_TIMEOUT 1000
@@ -87,8 +77,8 @@ struct mvebu_pcie {
static inline bool mvebu_pcie_link_up(struct mvebu_pcie *pcie)
{
u32 val;
- val = readl(pcie->base + PCIE_STAT_OFF);
- return !(val & PCIE_STAT_LINK_DOWN);
+ val = readl(pcie->base + MVPCIE_STAT_OFF);
+ return !(val & MVPCIE_STAT_LINK_DOWN);
}
static void mvebu_pcie_wait_for_link(struct mvebu_pcie *pcie)
@@ -112,20 +102,20 @@ static void mvebu_pcie_set_local_bus_nr(struct mvebu_pcie *pcie, int busno)
{
u32 stat;
- stat = readl(pcie->base + PCIE_STAT_OFF);
- stat &= ~PCIE_STAT_BUS;
+ stat = readl(pcie->base + MVPCIE_STAT_OFF);
+ stat &= ~MVPCIE_STAT_BUS;
stat |= busno << 8;
- writel(stat, pcie->base + PCIE_STAT_OFF);
+ writel(stat, pcie->base + MVPCIE_STAT_OFF);
}
static void mvebu_pcie_set_local_dev_nr(struct mvebu_pcie *pcie, int devno)
{
u32 stat;
- stat = readl(pcie->base + PCIE_STAT_OFF);
- stat &= ~PCIE_STAT_DEV;
+ stat = readl(pcie->base + MVPCIE_STAT_OFF);
+ stat &= ~MVPCIE_STAT_DEV;
stat |= devno << 16;
- writel(stat, pcie->base + PCIE_STAT_OFF);
+ writel(stat, pcie->base + MVPCIE_STAT_OFF);
}
static inline struct mvebu_pcie *hose_to_pcie(struct pci_controller *hose)
@@ -195,18 +185,18 @@ static int mvebu_pcie_read_config(const struct udevice *bus, pci_dev_t bdf,
addr = PCI_CONF1_EXT_ADDRESS(busno, PCI_DEV(bdf), PCI_FUNC(bdf), offset);
/* write address */
- writel(addr, pcie->base + PCIE_CONF_ADDR_OFF);
+ writel(addr, pcie->base + MVPCIE_CONF_ADDR_OFF);
/* read data */
switch (size) {
case PCI_SIZE_8:
- data = readb(pcie->base + PCIE_CONF_DATA_OFF + (offset & 3));
+ data = readb(pcie->base + MVPCIE_CONF_DATA_OFF + (offset & 3));
break;
case PCI_SIZE_16:
- data = readw(pcie->base + PCIE_CONF_DATA_OFF + (offset & 2));
+ data = readw(pcie->base + MVPCIE_CONF_DATA_OFF + (offset & 2));
break;
case PCI_SIZE_32:
- data = readl(pcie->base + PCIE_CONF_DATA_OFF);
+ data = readl(pcie->base + MVPCIE_CONF_DATA_OFF);
break;
default:
return -EINVAL;
@@ -286,18 +276,18 @@ static int mvebu_pcie_write_config(struct udevice *bus, pci_dev_t bdf,
addr = PCI_CONF1_EXT_ADDRESS(busno, PCI_DEV(bdf), PCI_FUNC(bdf), offset);
/* write address */
- writel(addr, pcie->base + PCIE_CONF_ADDR_OFF);
+ writel(addr, pcie->base + MVPCIE_CONF_ADDR_OFF);
/* write data */
switch (size) {
case PCI_SIZE_8:
- writeb(value, pcie->base + PCIE_CONF_DATA_OFF + (offset & 3));
+ writeb(value, pcie->base + MVPCIE_CONF_DATA_OFF + (offset & 3));
break;
case PCI_SIZE_16:
- writew(value, pcie->base + PCIE_CONF_DATA_OFF + (offset & 2));
+ writew(value, pcie->base + MVPCIE_CONF_DATA_OFF + (offset & 2));
break;
case PCI_SIZE_32:
- writel(value, pcie->base + PCIE_CONF_DATA_OFF);
+ writel(value, pcie->base + MVPCIE_CONF_DATA_OFF);
break;
default:
return -EINVAL;
@@ -321,20 +311,20 @@ static void mvebu_pcie_setup_wins(struct mvebu_pcie *pcie)
/* First, disable and clear BARs and windows. */
for (i = 1; i < 3; i++) {
- writel(0, pcie->base + PCIE_BAR_CTRL_OFF(i));
- writel(0, pcie->base + PCIE_BAR_LO_OFF(i));
- writel(0, pcie->base + PCIE_BAR_HI_OFF(i));
+ writel(0, pcie->base + MVPCIE_BAR_CTRL_OFF(i));
+ writel(0, pcie->base + MVPCIE_BAR_LO_OFF(i));
+ writel(0, pcie->base + MVPCIE_BAR_HI_OFF(i));
}
for (i = 0; i < 5; i++) {
- writel(0, pcie->base + PCIE_WIN04_CTRL_OFF(i));
- writel(0, pcie->base + PCIE_WIN04_BASE_OFF(i));
- writel(0, pcie->base + PCIE_WIN04_REMAP_OFF(i));
+ writel(0, pcie->base + MVPCIE_WIN04_CTRL_OFF(i));
+ writel(0, pcie->base + MVPCIE_WIN04_BASE_OFF(i));
+ writel(0, pcie->base + MVPCIE_WIN04_REMAP_OFF(i));
}
- writel(0, pcie->base + PCIE_WIN5_CTRL_OFF);
- writel(0, pcie->base + PCIE_WIN5_BASE_OFF);
- writel(0, pcie->base + PCIE_WIN5_REMAP_OFF);
+ writel(0, pcie->base + MVPCIE_WIN5_CTRL_OFF);
+ writel(0, pcie->base + MVPCIE_WIN5_BASE_OFF);
+ writel(0, pcie->base + MVPCIE_WIN5_REMAP_OFF);
/* Setup windows for DDR banks. Count total DDR size on the fly. */
size = 0;
@@ -342,12 +332,12 @@ static void mvebu_pcie_setup_wins(struct mvebu_pcie *pcie)
const struct mbus_dram_window *cs = dram->cs + i;
writel(cs->base & 0xffff0000,
- pcie->base + PCIE_WIN04_BASE_OFF(i));
- writel(0, pcie->base + PCIE_WIN04_REMAP_OFF(i));
+ pcie->base + MVPCIE_WIN04_BASE_OFF(i));
+ writel(0, pcie->base + MVPCIE_WIN04_REMAP_OFF(i));
writel(((cs->size - 1) & 0xffff0000) |
(cs->mbus_attr << 8) |
(dram->mbus_dram_target_id << 4) | 1,
- pcie->base + PCIE_WIN04_CTRL_OFF(i));
+ pcie->base + MVPCIE_WIN04_CTRL_OFF(i));
size += cs->size;
}
@@ -357,14 +347,14 @@ static void mvebu_pcie_setup_wins(struct mvebu_pcie *pcie)
size = 1 << fls(size);
/* Setup BAR[1] to all DRAM banks. */
- writel(dram->cs[0].base | 0xc, pcie->base + PCIE_BAR_LO_OFF(1));
- writel(0, pcie->base + PCIE_BAR_HI_OFF(1));
+ writel(dram->cs[0].base | 0xc, pcie->base + MVPCIE_BAR_LO_OFF(1));
+ writel(0, pcie->base + MVPCIE_BAR_HI_OFF(1));
writel(((size - 1) & 0xffff0000) | 0x1,
- pcie->base + PCIE_BAR_CTRL_OFF(1));
+ pcie->base + MVPCIE_BAR_CTRL_OFF(1));
/* Setup BAR[0] to internal registers. */
- writel(pcie->intregs, pcie->base + PCIE_BAR_LO_OFF(0));
- writel(0, pcie->base + PCIE_BAR_HI_OFF(0));
+ writel(pcie->intregs, pcie->base + MVPCIE_BAR_LO_OFF(0));
+ writel(0, pcie->base + MVPCIE_BAR_HI_OFF(0));
}
/* Only enable PCIe link, do not setup it */
@@ -403,9 +393,9 @@ static void mvebu_pcie_setup_link(struct mvebu_pcie *pcie)
u32 reg;
/* Setup PCIe controller to Root Complex mode */
- reg = readl(pcie->base + PCIE_CTRL_OFF);
- reg |= PCIE_CTRL_RC_MODE;
- writel(reg, pcie->base + PCIE_CTRL_OFF);
+ reg = readl(pcie->base + MVPCIE_CTRL_OFF);
+ reg |= MVPCIE_CTRL_RC_MODE;
+ writel(reg, pcie->base + MVPCIE_CTRL_OFF);
/*
* Set Maximum Link Width to X1 or X4 in Root Port's PCIe Link
@@ -414,10 +404,10 @@ static void mvebu_pcie_setup_link(struct mvebu_pcie *pcie)
* be set to number of SerDes PCIe lanes (1 or 4). If this register is
* not set correctly then link with endpoint card is not established.
*/
- reg = readl(pcie->base + PCIE_CAPAB_OFF + PCI_EXP_LNKCAP);
+ reg = readl(pcie->base + MVPCIE_ROOT_PORT_PCI_EXP_OFF + PCI_EXP_LNKCAP);
reg &= ~PCI_EXP_LNKCAP_MLW;
reg |= (pcie->is_x4 ? 4 : 1) << 4;
- writel(reg, pcie->base + PCIE_CAPAB_OFF + PCI_EXP_LNKCAP);
+ writel(reg, pcie->base + MVPCIE_ROOT_PORT_PCI_EXP_OFF + PCI_EXP_LNKCAP);
}
static int mvebu_pcie_probe(struct udevice *dev)
@@ -440,7 +430,7 @@ static int mvebu_pcie_probe(struct udevice *dev)
* have the same format in Marvell's specification as in PCIe
* specification, but their meaning is totally different and they do
* different things: they are aliased into internal mvebu registers
- * (e.g. PCIE_BAR_LO_OFF) and these should not be changed or
+ * (e.g. MVPCIE_BAR_LO_OFF) and these should not be changed or
* reconfigured by pci device drivers.
*
* So our driver converts Type 0 config space to Type 1 and reports
@@ -448,10 +438,10 @@ static int mvebu_pcie_probe(struct udevice *dev)
* Type 1 registers is redirected to the virtual cfgcache[] buffer,
* which avoids changing unrelated registers.
*/
- reg = readl(pcie->base + PCIE_DEV_REV_OFF);
+ reg = readl(pcie->base + MVPCIE_ROOT_PORT_PCI_CFG_OFF + PCI_CLASS_REVISION);
reg &= ~0xffffff00;
reg |= (PCI_CLASS_BRIDGE_PCI << 8) << 8;
- writel(reg, pcie->base + PCIE_DEV_REV_OFF);
+ writel(reg, pcie->base + MVPCIE_ROOT_PORT_PCI_CFG_OFF + PCI_CLASS_REVISION);
/*
* mvebu uses local bus number and local device number to determinate
--
2.20.1
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