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-rw-r--r--drivers/pci/controller/dwc/Kconfig6
-rw-r--r--drivers/pci/controller/dwc/pci-dra7xx.c2
-rw-r--r--drivers/pci/controller/dwc/pci-layerscape-ep.c2
-rw-r--r--drivers/pci/controller/dwc/pci-layerscape.c1
-rw-r--r--drivers/pci/controller/dwc/pci-meson.c136
-rw-r--r--drivers/pci/controller/dwc/pcie-artpec6.c2
-rw-r--r--drivers/pci/controller/dwc/pcie-designware-host.c41
-rw-r--r--drivers/pci/controller/dwc/pcie-designware-plat.c2
-rw-r--r--drivers/pci/controller/dwc/pcie-designware.h2
-rw-r--r--drivers/pci/controller/dwc/pcie-tegra194.c6
-rw-r--r--drivers/pci/controller/dwc/pcie-uniphier.c10
11 files changed, 146 insertions, 64 deletions
diff --git a/drivers/pci/controller/dwc/Kconfig b/drivers/pci/controller/dwc/Kconfig
index 0ba988b5b5bc..625a031b2193 100644
--- a/drivers/pci/controller/dwc/Kconfig
+++ b/drivers/pci/controller/dwc/Kconfig
@@ -7,9 +7,9 @@ config PCIE_DW
bool
config PCIE_DW_HOST
- bool
+ bool
depends on PCI_MSI_IRQ_DOMAIN
- select PCIE_DW
+ select PCIE_DW
config PCIE_DW_EP
bool
@@ -224,7 +224,7 @@ config PCIE_HISI_STB
depends on PCI_MSI_IRQ_DOMAIN
select PCIE_DW_HOST
help
- Say Y here if you want PCIe controller support on HiSilicon STB SoCs
+ Say Y here if you want PCIe controller support on HiSilicon STB SoCs
config PCI_MESON
bool "MESON PCIe controller"
diff --git a/drivers/pci/controller/dwc/pci-dra7xx.c b/drivers/pci/controller/dwc/pci-dra7xx.c
index 4234ddb4722f..b20651cea09f 100644
--- a/drivers/pci/controller/dwc/pci-dra7xx.c
+++ b/drivers/pci/controller/dwc/pci-dra7xx.c
@@ -353,7 +353,7 @@ static void dra7xx_pcie_ep_init(struct dw_pcie_ep *ep)
struct dra7xx_pcie *dra7xx = to_dra7xx_pcie(pci);
enum pci_barno bar;
- for (bar = BAR_0; bar <= BAR_5; bar++)
+ for (bar = 0; bar < PCI_STD_NUM_BARS; bar++)
dw_pcie_ep_reset_bar(pci, bar);
dra7xx_pcie_enable_wrapper_interrupts(dra7xx);
diff --git a/drivers/pci/controller/dwc/pci-layerscape-ep.c b/drivers/pci/controller/dwc/pci-layerscape-ep.c
index ca9aa4501e7e..0d151cead1b7 100644
--- a/drivers/pci/controller/dwc/pci-layerscape-ep.c
+++ b/drivers/pci/controller/dwc/pci-layerscape-ep.c
@@ -58,7 +58,7 @@ static void ls_pcie_ep_init(struct dw_pcie_ep *ep)
struct dw_pcie *pci = to_dw_pcie_from_ep(ep);
enum pci_barno bar;
- for (bar = BAR_0; bar <= BAR_5; bar++)
+ for (bar = 0; bar < PCI_STD_NUM_BARS; bar++)
dw_pcie_ep_reset_bar(pci, bar);
}
diff --git a/drivers/pci/controller/dwc/pci-layerscape.c b/drivers/pci/controller/dwc/pci-layerscape.c
index 3a5fa26d5e56..f24f79a70d9a 100644
--- a/drivers/pci/controller/dwc/pci-layerscape.c
+++ b/drivers/pci/controller/dwc/pci-layerscape.c
@@ -263,6 +263,7 @@ static const struct ls_pcie_drvdata ls2088_drvdata = {
static const struct of_device_id ls_pcie_of_match[] = {
{ .compatible = "fsl,ls1012a-pcie", .data = &ls1046_drvdata },
{ .compatible = "fsl,ls1021a-pcie", .data = &ls1021_drvdata },
+ { .compatible = "fsl,ls1028a-pcie", .data = &ls2088_drvdata },
{ .compatible = "fsl,ls1043a-pcie", .data = &ls1043_drvdata },
{ .compatible = "fsl,ls1046a-pcie", .data = &ls1046_drvdata },
{ .compatible = "fsl,ls2080a-pcie", .data = &ls2080_drvdata },
diff --git a/drivers/pci/controller/dwc/pci-meson.c b/drivers/pci/controller/dwc/pci-meson.c
index e35e9eaa50ee..3772b02a5c55 100644
--- a/drivers/pci/controller/dwc/pci-meson.c
+++ b/drivers/pci/controller/dwc/pci-meson.c
@@ -16,6 +16,7 @@
#include <linux/reset.h>
#include <linux/resource.h>
#include <linux/types.h>
+#include <linux/phy/phy.h>
#include "pcie-designware.h"
@@ -96,12 +97,18 @@ struct meson_pcie_rc_reset {
struct reset_control *apb;
};
+struct meson_pcie_param {
+ bool has_shared_phy;
+};
+
struct meson_pcie {
struct dw_pcie pci;
struct meson_pcie_mem_res mem_res;
struct meson_pcie_clk_res clk_res;
struct meson_pcie_rc_reset mrst;
struct gpio_desc *reset_gpio;
+ struct phy *phy;
+ const struct meson_pcie_param *param;
};
static struct reset_control *meson_pcie_get_reset(struct meson_pcie *mp,
@@ -123,10 +130,12 @@ static int meson_pcie_get_resets(struct meson_pcie *mp)
{
struct meson_pcie_rc_reset *mrst = &mp->mrst;
- mrst->phy = meson_pcie_get_reset(mp, "phy", PCIE_SHARED_RESET);
- if (IS_ERR(mrst->phy))
- return PTR_ERR(mrst->phy);
- reset_control_deassert(mrst->phy);
+ if (!mp->param->has_shared_phy) {
+ mrst->phy = meson_pcie_get_reset(mp, "phy", PCIE_SHARED_RESET);
+ if (IS_ERR(mrst->phy))
+ return PTR_ERR(mrst->phy);
+ reset_control_deassert(mrst->phy);
+ }
mrst->port = meson_pcie_get_reset(mp, "port", PCIE_NORMAL_RESET);
if (IS_ERR(mrst->port))
@@ -180,27 +189,52 @@ static int meson_pcie_get_mems(struct platform_device *pdev,
if (IS_ERR(mp->mem_res.cfg_base))
return PTR_ERR(mp->mem_res.cfg_base);
- /* Meson SoC has two PCI controllers use same phy register*/
- mp->mem_res.phy_base = meson_pcie_get_mem_shared(pdev, mp, "phy");
- if (IS_ERR(mp->mem_res.phy_base))
- return PTR_ERR(mp->mem_res.phy_base);
+ /* Meson AXG SoC has two PCI controllers use same phy register */
+ if (!mp->param->has_shared_phy) {
+ mp->mem_res.phy_base =
+ meson_pcie_get_mem_shared(pdev, mp, "phy");
+ if (IS_ERR(mp->mem_res.phy_base))
+ return PTR_ERR(mp->mem_res.phy_base);
+ }
return 0;
}
-static void meson_pcie_power_on(struct meson_pcie *mp)
+static int meson_pcie_power_on(struct meson_pcie *mp)
{
- writel(MESON_PCIE_PHY_POWERUP, mp->mem_res.phy_base);
+ int ret = 0;
+
+ if (mp->param->has_shared_phy) {
+ ret = phy_init(mp->phy);
+ if (ret)
+ return ret;
+
+ ret = phy_power_on(mp->phy);
+ if (ret) {
+ phy_exit(mp->phy);
+ return ret;
+ }
+ } else
+ writel(MESON_PCIE_PHY_POWERUP, mp->mem_res.phy_base);
+
+ return 0;
}
-static void meson_pcie_reset(struct meson_pcie *mp)
+static int meson_pcie_reset(struct meson_pcie *mp)
{
struct meson_pcie_rc_reset *mrst = &mp->mrst;
-
- reset_control_assert(mrst->phy);
- udelay(PCIE_RESET_DELAY);
- reset_control_deassert(mrst->phy);
- udelay(PCIE_RESET_DELAY);
+ int ret = 0;
+
+ if (mp->param->has_shared_phy) {
+ ret = phy_reset(mp->phy);
+ if (ret)
+ return ret;
+ } else {
+ reset_control_assert(mrst->phy);
+ udelay(PCIE_RESET_DELAY);
+ reset_control_deassert(mrst->phy);
+ udelay(PCIE_RESET_DELAY);
+ }
reset_control_assert(mrst->port);
reset_control_assert(mrst->apb);
@@ -208,6 +242,8 @@ static void meson_pcie_reset(struct meson_pcie *mp)
reset_control_deassert(mrst->port);
reset_control_deassert(mrst->apb);
udelay(PCIE_RESET_DELAY);
+
+ return 0;
}
static inline struct clk *meson_pcie_probe_clock(struct device *dev,
@@ -250,15 +286,17 @@ static int meson_pcie_probe_clocks(struct meson_pcie *mp)
if (IS_ERR(res->port_clk))
return PTR_ERR(res->port_clk);
- res->mipi_gate = meson_pcie_probe_clock(dev, "pcie_mipi_en", 0);
- if (IS_ERR(res->mipi_gate))
- return PTR_ERR(res->mipi_gate);
+ if (!mp->param->has_shared_phy) {
+ res->mipi_gate = meson_pcie_probe_clock(dev, "mipi", 0);
+ if (IS_ERR(res->mipi_gate))
+ return PTR_ERR(res->mipi_gate);
+ }
- res->general_clk = meson_pcie_probe_clock(dev, "pcie_general", 0);
+ res->general_clk = meson_pcie_probe_clock(dev, "general", 0);
if (IS_ERR(res->general_clk))
return PTR_ERR(res->general_clk);
- res->clk = meson_pcie_probe_clock(dev, "pcie", 0);
+ res->clk = meson_pcie_probe_clock(dev, "pclk", 0);
if (IS_ERR(res->clk))
return PTR_ERR(res->clk);
@@ -287,9 +325,9 @@ static inline void meson_cfg_writel(struct meson_pcie *mp, u32 val, u32 reg)
static void meson_pcie_assert_reset(struct meson_pcie *mp)
{
- gpiod_set_value_cansleep(mp->reset_gpio, 0);
- udelay(500);
gpiod_set_value_cansleep(mp->reset_gpio, 1);
+ udelay(500);
+ gpiod_set_value_cansleep(mp->reset_gpio, 0);
}
static void meson_pcie_init_dw(struct meson_pcie *mp)
@@ -524,6 +562,7 @@ static const struct dw_pcie_ops dw_pcie_ops = {
static int meson_pcie_probe(struct platform_device *pdev)
{
+ const struct meson_pcie_param *match_data;
struct device *dev = &pdev->dev;
struct dw_pcie *pci;
struct meson_pcie *mp;
@@ -537,6 +576,19 @@ static int meson_pcie_probe(struct platform_device *pdev)
pci->dev = dev;
pci->ops = &dw_pcie_ops;
+ match_data = of_device_get_match_data(dev);
+ if (!match_data) {
+ dev_err(dev, "failed to get match data\n");
+ return -ENODEV;
+ }
+ mp->param = match_data;
+
+ if (mp->param->has_shared_phy) {
+ mp->phy = devm_phy_get(dev, "pcie");
+ if (IS_ERR(mp->phy))
+ return PTR_ERR(mp->phy);
+ }
+
mp->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW);
if (IS_ERR(mp->reset_gpio)) {
dev_err(dev, "get reset gpio failed\n");
@@ -555,13 +607,22 @@ static int meson_pcie_probe(struct platform_device *pdev)
return ret;
}
- meson_pcie_power_on(mp);
- meson_pcie_reset(mp);
+ ret = meson_pcie_power_on(mp);
+ if (ret) {
+ dev_err(dev, "phy power on failed, %d\n", ret);
+ return ret;
+ }
+
+ ret = meson_pcie_reset(mp);
+ if (ret) {
+ dev_err(dev, "reset failed, %d\n", ret);
+ goto err_phy;
+ }
ret = meson_pcie_probe_clocks(mp);
if (ret) {
dev_err(dev, "init clock resources failed, %d\n", ret);
- return ret;
+ goto err_phy;
}
platform_set_drvdata(pdev, mp);
@@ -569,15 +630,36 @@ static int meson_pcie_probe(struct platform_device *pdev)
ret = meson_add_pcie_port(mp, pdev);
if (ret < 0) {
dev_err(dev, "Add PCIe port failed, %d\n", ret);
- return ret;
+ goto err_phy;
}
return 0;
+
+err_phy:
+ if (mp->param->has_shared_phy) {
+ phy_power_off(mp->phy);
+ phy_exit(mp->phy);
+ }
+
+ return ret;
}
+static struct meson_pcie_param meson_pcie_axg_param = {
+ .has_shared_phy = false,
+};
+
+static struct meson_pcie_param meson_pcie_g12a_param = {
+ .has_shared_phy = true,
+};
+
static const struct of_device_id meson_pcie_of_match[] = {
{
.compatible = "amlogic,axg-pcie",
+ .data = &meson_pcie_axg_param,
+ },
+ {
+ .compatible = "amlogic,g12a-pcie",
+ .data = &meson_pcie_g12a_param,
},
{},
};
diff --git a/drivers/pci/controller/dwc/pcie-artpec6.c b/drivers/pci/controller/dwc/pcie-artpec6.c
index d00252bd8fae..9e2482bd7b6d 100644
--- a/drivers/pci/controller/dwc/pcie-artpec6.c
+++ b/drivers/pci/controller/dwc/pcie-artpec6.c
@@ -422,7 +422,7 @@ static void artpec6_pcie_ep_init(struct dw_pcie_ep *ep)
artpec6_pcie_wait_for_phy(artpec6_pcie);
artpec6_pcie_set_nfts(artpec6_pcie);
- for (bar = BAR_0; bar <= BAR_5; bar++)
+ for (bar = 0; bar < PCI_STD_NUM_BARS; bar++)
dw_pcie_ep_reset_bar(pci, bar);
}
diff --git a/drivers/pci/controller/dwc/pcie-designware-host.c b/drivers/pci/controller/dwc/pcie-designware-host.c
index 0f36a926059a..395feb8ca051 100644
--- a/drivers/pci/controller/dwc/pcie-designware-host.c
+++ b/drivers/pci/controller/dwc/pcie-designware-host.c
@@ -10,6 +10,7 @@
#include <linux/irqchip/chained_irq.h>
#include <linux/irqdomain.h>
+#include <linux/msi.h>
#include <linux/of_address.h>
#include <linux/of_pci.h>
#include <linux/pci_regs.h>
@@ -78,7 +79,8 @@ static struct msi_domain_info dw_pcie_msi_domain_info = {
irqreturn_t dw_handle_msi_irq(struct pcie_port *pp)
{
int i, pos, irq;
- u32 val, num_ctrls;
+ unsigned long val;
+ u32 status, num_ctrls;
irqreturn_t ret = IRQ_NONE;
num_ctrls = pp->num_vectors / MAX_MSI_IRQS_PER_CTRL;
@@ -86,14 +88,14 @@ irqreturn_t dw_handle_msi_irq(struct pcie_port *pp)
for (i = 0; i < num_ctrls; i++) {
dw_pcie_rd_own_conf(pp, PCIE_MSI_INTR0_STATUS +
(i * MSI_REG_CTRL_BLOCK_SIZE),
- 4, &val);
- if (!val)
+ 4, &status);
+ if (!status)
continue;
ret = IRQ_HANDLED;
+ val = status;
pos = 0;
- while ((pos = find_next_bit((unsigned long *) &val,
- MAX_MSI_IRQS_PER_CTRL,
+ while ((pos = find_next_bit(&val, MAX_MSI_IRQS_PER_CTRL,
pos)) != MAX_MSI_IRQS_PER_CTRL) {
irq = irq_find_mapping(pp->irq_domain,
(i * MAX_MSI_IRQS_PER_CTRL) +
@@ -319,7 +321,7 @@ int dw_pcie_host_init(struct pcie_port *pp)
struct device *dev = pci->dev;
struct device_node *np = dev->of_node;
struct platform_device *pdev = to_platform_device(dev);
- struct resource_entry *win, *tmp;
+ struct resource_entry *win;
struct pci_bus *child;
struct pci_host_bridge *bridge;
struct resource *cfg_res;
@@ -342,31 +344,20 @@ int dw_pcie_host_init(struct pcie_port *pp)
if (!bridge)
return -ENOMEM;
- ret = devm_of_pci_get_host_bridge_resources(dev, 0, 0xff,
- &bridge->windows, &pp->io_base);
- if (ret)
- return ret;
-
- ret = devm_request_pci_bus_resources(dev, &bridge->windows);
+ ret = pci_parse_request_of_pci_ranges(dev, &bridge->windows,
+ &bridge->dma_ranges, NULL);
if (ret)
return ret;
/* Get the I/O and memory ranges from DT */
- resource_list_for_each_entry_safe(win, tmp, &bridge->windows) {
+ resource_list_for_each_entry(win, &bridge->windows) {
switch (resource_type(win->res)) {
case IORESOURCE_IO:
- ret = devm_pci_remap_iospace(dev, win->res,
- pp->io_base);
- if (ret) {
- dev_warn(dev, "Error %d: failed to map resource %pR\n",
- ret, win->res);
- resource_list_destroy_entry(win);
- } else {
- pp->io = win->res;
- pp->io->name = "I/O";
- pp->io_size = resource_size(pp->io);
- pp->io_bus_addr = pp->io->start - win->offset;
- }
+ pp->io = win->res;
+ pp->io->name = "I/O";
+ pp->io_size = resource_size(pp->io);
+ pp->io_bus_addr = pp->io->start - win->offset;
+ pp->io_base = pci_pio_to_address(pp->io->start);
break;
case IORESOURCE_MEM:
pp->mem = win->res;
diff --git a/drivers/pci/controller/dwc/pcie-designware-plat.c b/drivers/pci/controller/dwc/pcie-designware-plat.c
index b58fdcbc664b..73646b677aff 100644
--- a/drivers/pci/controller/dwc/pcie-designware-plat.c
+++ b/drivers/pci/controller/dwc/pcie-designware-plat.c
@@ -70,7 +70,7 @@ static void dw_plat_pcie_ep_init(struct dw_pcie_ep *ep)
struct dw_pcie *pci = to_dw_pcie_from_ep(ep);
enum pci_barno bar;
- for (bar = BAR_0; bar <= BAR_5; bar++)
+ for (bar = 0; bar < PCI_STD_NUM_BARS; bar++)
dw_pcie_ep_reset_bar(pci, bar);
}
diff --git a/drivers/pci/controller/dwc/pcie-designware.h b/drivers/pci/controller/dwc/pcie-designware.h
index 5a18e94e52c8..5accdd6bc388 100644
--- a/drivers/pci/controller/dwc/pcie-designware.h
+++ b/drivers/pci/controller/dwc/pcie-designware.h
@@ -214,7 +214,7 @@ struct dw_pcie_ep {
phys_addr_t phys_base;
size_t addr_size;
size_t page_size;
- u8 bar_to_atu[6];
+ u8 bar_to_atu[PCI_STD_NUM_BARS];
phys_addr_t *outbound_addr;
unsigned long *ib_window_map;
unsigned long *ob_window_map;
diff --git a/drivers/pci/controller/dwc/pcie-tegra194.c b/drivers/pci/controller/dwc/pcie-tegra194.c
index f89f5acee72d..cbe95f0ea0ca 100644
--- a/drivers/pci/controller/dwc/pcie-tegra194.c
+++ b/drivers/pci/controller/dwc/pcie-tegra194.c
@@ -40,8 +40,6 @@
#define APPL_PINMUX_CLKREQ_OVERRIDE BIT(3)
#define APPL_PINMUX_CLK_OUTPUT_IN_OVERRIDE_EN BIT(4)
#define APPL_PINMUX_CLK_OUTPUT_IN_OVERRIDE BIT(5)
-#define APPL_PINMUX_CLKREQ_OUT_OVRD_EN BIT(9)
-#define APPL_PINMUX_CLKREQ_OUT_OVRD BIT(10)
#define APPL_CTRL 0x4
#define APPL_CTRL_SYS_PRE_DET_STATE BIT(6)
@@ -1193,8 +1191,8 @@ static int tegra_pcie_config_controller(struct tegra_pcie_dw *pcie,
if (!pcie->supports_clkreq) {
val = appl_readl(pcie, APPL_PINMUX);
- val |= APPL_PINMUX_CLKREQ_OUT_OVRD_EN;
- val |= APPL_PINMUX_CLKREQ_OUT_OVRD;
+ val |= APPL_PINMUX_CLKREQ_OVERRIDE_EN;
+ val &= ~APPL_PINMUX_CLKREQ_OVERRIDE;
appl_writel(pcie, val, APPL_PINMUX);
}
diff --git a/drivers/pci/controller/dwc/pcie-uniphier.c b/drivers/pci/controller/dwc/pcie-uniphier.c
index 3f30ee4a00b3..8fd7badd59c2 100644
--- a/drivers/pci/controller/dwc/pcie-uniphier.c
+++ b/drivers/pci/controller/dwc/pcie-uniphier.c
@@ -33,6 +33,10 @@
#define PCL_PIPEMON 0x0044
#define PCL_PCLK_ALIVE BIT(15)
+#define PCL_MODE 0x8000
+#define PCL_MODE_REGEN BIT(8)
+#define PCL_MODE_REGVAL BIT(0)
+
#define PCL_APP_READY_CTRL 0x8008
#define PCL_APP_LTSSM_ENABLE BIT(0)
@@ -85,6 +89,12 @@ static void uniphier_pcie_init_rc(struct uniphier_pcie_priv *priv)
{
u32 val;
+ /* set RC MODE */
+ val = readl(priv->base + PCL_MODE);
+ val |= PCL_MODE_REGEN;
+ val &= ~PCL_MODE_REGVAL;
+ writel(val, priv->base + PCL_MODE);
+
/* use auxiliary power detection */
val = readl(priv->base + PCL_APP_PM0);
val |= PCL_SYS_AUX_PWR_DET;
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.