Ben Chuang has uploaded this change for review.
drivers/generic/genesyslogic: Add driver for Genesys Loigc GL9763E
Set single request AXI, disable ASPM L0s and enable SSC.
Signed-off-by: Ben Chuang <benchuanggli@gmail.com>
Change-Id: I158c79f5ac6e559f335b6b50092469c7b1646c56
---
A src/drivers/generic/genesyslogic/Kconfig
A src/drivers/generic/genesyslogic/Makefile.inc
A src/drivers/generic/genesyslogic/gli9763e.c
A src/drivers/generic/genesyslogic/gli9763e.h
4 files changed, 118 insertions(+), 0 deletions(-)
git pull ssh://review.coreboot.org:29418/coreboot refs/changes/51/43751/1
diff --git a/src/drivers/generic/genesyslogic/Kconfig b/src/drivers/generic/genesyslogic/Kconfig
new file mode 100644
index 0000000..e215cfa
--- /dev/null
+++ b/src/drivers/generic/genesyslogic/Kconfig
@@ -0,0 +1,2 @@
+config DRIVERS_GENERIC_GLI9763E
+ bool
diff --git a/src/drivers/generic/genesyslogic/Makefile.inc b/src/drivers/generic/genesyslogic/Makefile.inc
new file mode 100644
index 0000000..9f5a2eb
--- /dev/null
+++ b/src/drivers/generic/genesyslogic/Makefile.inc
@@ -0,0 +1 @@
+ramstage-$(CONFIG_DRIVERS_GENERIC_GLI9763E) += gli9763e.c
diff --git a/src/drivers/generic/genesyslogic/gli9763e.c b/src/drivers/generic/genesyslogic/gli9763e.c
new file mode 100644
index 0000000..66b0af5
--- /dev/null
+++ b/src/drivers/generic/genesyslogic/gli9763e.c
@@ -0,0 +1,87 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+/* Driver for GenesysLogic 9763E */
+
+#include <console/console.h>
+#include <device/device.h>
+#include <device/path.h>
+#include <device/pci.h>
+#include <device/pci_ops.h>
+#include <device/pci_ids.h>
+#include "gli9763e.h"
+
+static inline int pci_read_config_dword(struct device *dev, int where,
+ u32 *val)
+{
+ *val = pci_read_config32(dev, where);
+ return 0;
+}
+
+static inline int pci_write_config_dword(struct device *dev, int where,
+ u32 val)
+{
+ pci_write_config32(dev, where, val);
+ return 0;
+}
+
+static void gli_set_gl9763e(struct device *pdev)
+{
+ u32 value;
+
+ pci_read_config_dword(pdev, PCIE_GLI_9763E_VHS, &value);
+ value &= ~GLI_9763E_VHS_REV;
+ value |= ((u32)GLI_9763E_VHS_REV_W << GLI_9763E_VHS_REV_SHIFT);
+ pci_write_config_dword(pdev, PCIE_GLI_9763E_VHS, value);
+
+ pci_read_config_dword(pdev, PCIE_GLI_9763E_SCR, &value);
+ value |= GLI_9763E_SCR_AXI_REQ;
+ pci_write_config_dword(pdev, PCIE_GLI_9763E_SCR, value);
+
+ pci_read_config_dword(pdev, PCIE_GLI_9763E_CFG_REG_2, &value);
+ value &= ~GLI_9763E_CFG_REG_2_L0S;
+ pci_write_config_dword(pdev, PCIE_GLI_9763E_CFG_REG_2, value);
+
+ pci_read_config_dword(pdev, PCIE_GLI_9763E_PLL_CTL_2, &value);
+ value &= ~GLI_9763E_PLL_CTL_2_MAX_SSC;
+ value |= ((u32)MAX_SSC_30000PPM << GLI_9763E_PLL_CTL_2_MAX_SSC_SHIFT);
+ pci_write_config_dword(pdev, PCIE_GLI_9763E_PLL_CTL_2, value);
+
+ pci_read_config_dword(pdev, PCIE_GLI_9763E_PLL_CTL, &value);
+ value |= GLI_9763E_PLL_CTL_SSC;
+ pci_write_config_dword(pdev, PCIE_GLI_9763E_PLL_CTL, value);
+
+ pci_read_config_dword(pdev, PCIE_GLI_9763E_VHS, &value);
+ value &= ~GLI_9763E_VHS_REV;
+ value |= ((u32)GLI_9763E_VHS_REV_R << GLI_9763E_VHS_REV_SHIFT);
+ pci_write_config_dword(pdev, PCIE_GLI_9763E_VHS, value);
+}
+
+static void gli9763e_init(struct device *dev)
+{
+ printk(BIOS_INFO, "GL9763E: init\n");
+ pci_dev_init(dev);
+ gli_set_gl9763e(dev);
+}
+
+static struct device_operations gli9763e_ops = {
+ .read_resources = pci_dev_read_resources,
+ .set_resources = pci_dev_set_resources,
+ .enable_resources = pci_dev_enable_resources,
+ .ops_pci = &pci_dev_ops_pci,
+ .init = gli9763e_init,
+};
+
+static const unsigned short pci_device_ids[] = {
+ PCI_DEVICE_ID_GLI_9763E,
+ 0
+};
+
+static const struct pci_driver genesyslogic_gli9763e __pci_driver = {
+ .ops = &gli9763e_ops,
+ .vendor = PCI_VENDOR_ID_GLI,
+ .devices = pci_device_ids,
+};
+
+struct chip_operations drivers_generic_genesyslogic_ops = {
+ CHIP_NAME("Genesys Logic GL9763E")
+};
diff --git a/src/drivers/generic/genesyslogic/gli9763e.h b/src/drivers/generic/genesyslogic/gli9763e.h
new file mode 100644
index 0000000..586870f
--- /dev/null
+++ b/src/drivers/generic/genesyslogic/gli9763e.h
@@ -0,0 +1,28 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+/* Driver for GenesysLogic 9763E */
+
+#include <types.h>
+
+#define PCI_VENDOR_ID_GLI 0x17a0
+#define PCI_DEVICE_ID_GLI_9763E 0xe763
+
+#define PCIE_GLI_9763E_VHS 0x884
+#define GLI_9763E_VHS_REV 0xF00
+#define GLI_9763E_VHS_REV_SHIFT 16
+#define GLI_9763E_VHS_REV_R 0x0
+#define GLI_9763E_VHS_REV_M 0x1
+#define GLI_9763E_VHS_REV_W 0x2
+#define PCIE_GLI_9763E_SCR 0x8E0
+#define GLI_9763E_SCR_AXI_REQ BIT(9)
+
+#define PCIE_GLI_9763E_CFG_REG_2 0x8A4
+#define GLI_9763E_CFG_REG_2_L0S BIT(11)
+
+#define PCIE_GLI_9763E_PLL_CTL 0x938
+#define GLI_9763E_PLL_CTL_SSC BIT(19)
+
+#define PCIE_GLI_9763E_PLL_CTL_2 0x93C
+#define GLI_9763E_PLL_CTL_2_MAX_SSC 0xFFFF0000
+#define GLI_9763E_PLL_CTL_2_MAX_SSC_SHIFT 16
+#define MAX_SSC_30000PPM 0xF5C3
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