1 files changed, 264 insertions, 0 deletions
diff --git a/drivers/pci/pcie_layerscape_gen4.h b/drivers/pci/pcie_layerscape_gen4.h
new file mode 100644
index 0000000000..27c2d09332
--- /dev/null
+++ b/drivers/pci/pcie_layerscape_gen4.h
@@ -0,0 +1,264 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright 2018-2019 NXP
+ *
+ * PCIe Gen4 driver for NXP Layerscape SoCs
+ * Author: Hou Zhiqiang <Minder.Hou@gmail.com>
+ */
+
+#ifndef _PCIE_LAYERSCAPE_GEN4_H_
+#define _PCIE_LAYERSCAPE_GEN4_H_
+#include <pci.h>
+#include <dm.h>
+
+#ifndef CONFIG_SYS_PCI_MEMORY_SIZE
+#define CONFIG_SYS_PCI_MEMORY_SIZE		(4 * 1024 * 1024 * 1024ULL)
+#endif
+
+#ifndef CONFIG_SYS_PCI_EP_MEMORY_BASE
+#define CONFIG_SYS_PCI_EP_MEMORY_BASE		CONFIG_SYS_LOAD_ADDR
+#endif
+
+#define PCIE_PF_NUM				2
+#define PCIE_VF_NUM				32
+
+#define LS_G4_PF0				0
+#define LS_G4_PF1				1
+#define PF_BAR_NUM				4
+#define VF_BAR_NUM				4
+#define PCIE_BAR_SIZE				(8 * 1024)		/* 8K */
+#define PCIE_BAR0_SIZE				PCIE_BAR_SIZE
+#define PCIE_BAR1_SIZE				PCIE_BAR_SIZE
+#define PCIE_BAR2_SIZE				PCIE_BAR_SIZE
+#define PCIE_BAR4_SIZE				PCIE_BAR_SIZE
+#define SIZE_1T					(1024 * 1024 * 1024 * 1024ULL)
+
+/* GPEX CSR */
+#define GPEX_CLASSCODE				0x474
+#define GPEX_CLASSCODE_SHIFT			16
+#define GPEX_CLASSCODE_MASK			0xffff
+
+#define GPEX_CFG_READY				0x4b0
+#define PCIE_CONFIG_READY			BIT(0)
+
+#define GPEX_BAR_ENABLE				0x4d4
+#define GPEX_BAR_SIZE_LDW			0x4d8
+#define GPEX_BAR_SIZE_UDW			0x4dC
+#define GPEX_BAR_SELECT				0x4e0
+
+#define BAR_POS(bar, pf, vf_bar)		\
+	((bar) + (pf) * PF_BAR_NUM + (vf_bar) * PCIE_PF_NUM * PF_BAR_NUM)
+
+#define GPEX_SRIOV_INIT_VFS_TOTAL_VF(pf)	(0x644 + (pf) * 4)
+#define TTL_VF_MASK				0xffff
+#define TTL_VF_SHIFT				16
+#define INI_VF_MASK				0xffff
+#define INI_VF_SHIFT				0
+#define GPEX_SRIOV_VF_OFFSET_STRIDE(pf)		(0x704 + (pf) * 4)
+
+/* PAB CSR */
+#define PAB_CTRL				0x808
+#define PAB_CTRL_APIO_EN			BIT(0)
+#define PAB_CTRL_PPIO_EN			BIT(1)
+#define PAB_CTRL_MAX_BRST_LEN_SHIFT		4
+#define PAB_CTRL_MAX_BRST_LEN_MASK		0x3
+#define PAB_CTRL_PAGE_SEL_SHIFT			13
+#define PAB_CTRL_PAGE_SEL_MASK			0x3f
+#define PAB_CTRL_FUNC_SEL_SHIFT			19
+#define PAB_CTRL_FUNC_SEL_MASK			0x1ff
+
+#define PAB_RST_CTRL				0x820
+#define PAB_BR_STAT				0x80c
+
+/* AXI PIO Engines */
+#define PAB_AXI_PIO_CTRL(idx)			(0x840 + 0x10 * (idx))
+#define APIO_EN					BIT(0)
+#define MEM_WIN_EN				BIT(1)
+#define IO_WIN_EN				BIT(2)
+#define CFG_WIN_EN				BIT(3)
+#define PAB_AXI_PIO_STAT(idx)			(0x844 + 0x10 * (idx))
+#define PAB_AXI_PIO_SL_CMD_STAT(idx)		(0x848 + 0x10 * (idx))
+#define PAB_AXI_PIO_SL_ADDR_STAT(idx)		(0x84c + 0x10 * (idx))
+#define PAB_AXI_PIO_SL_EXT_ADDR_STAT(idx)	(0xb8a0 + 0x4 * (idx))
+
+/* PEX PIO Engines */
+#define PAB_PEX_PIO_CTRL(idx)			(0x8c0 + 0x10 * (idx))
+#define PPIO_EN					BIT(0)
+#define PAB_PEX_PIO_STAT(idx)			(0x8c4 + 0x10 * (idx))
+#define PAB_PEX_PIO_MT_STAT(idx)		(0x8c8 + 0x10 * (idx))
+
+#define INDIRECT_ADDR_BNDRY			0xc00
+#define PAGE_IDX_SHIFT				10
+#define PAGE_ADDR_MASK				0x3ff
+
+#define OFFSET_TO_PAGE_IDX(off)			\
+	(((off) >> PAGE_IDX_SHIFT) & PAB_CTRL_PAGE_SEL_MASK)
+
+#define OFFSET_TO_PAGE_ADDR(off)		\
+	(((off) & PAGE_ADDR_MASK) | INDIRECT_ADDR_BNDRY)
+
+/* APIO WINs */
+#define PAB_AXI_AMAP_CTRL(idx)			(0xba0 + 0x10 * (idx))
+#define PAB_EXT_AXI_AMAP_SIZE(idx)		(0xbaf0 + 0x4 * (idx))
+#define PAB_AXI_AMAP_AXI_WIN(idx)		(0xba4 + 0x10 * (idx))
+#define PAB_EXT_AXI_AMAP_AXI_WIN(idx)		(0x80a0 + 0x4 * (idx))
+#define PAB_AXI_AMAP_PEX_WIN_L(idx)		(0xba8 + 0x10 * (idx))
+#define PAB_AXI_AMAP_PEX_WIN_H(idx)		(0xbac + 0x10 * (idx))
+#define PAB_AXI_AMAP_PCI_HDR_PARAM(idx)		(0x5ba0 + 0x4 * (idx))
+#define FUNC_NUM_PCIE_MASK			GENMASK(7, 0)
+
+#define AXI_AMAP_CTRL_EN			BIT(0)
+#define AXI_AMAP_CTRL_TYPE_SHIFT		1
+#define AXI_AMAP_CTRL_TYPE_MASK			0x3
+#define AXI_AMAP_CTRL_SIZE_SHIFT		10
+#define AXI_AMAP_CTRL_SIZE_MASK			0x3fffff
+
+#define PAB_TARGET_BUS(x)			(((x) & 0xff) << 24)
+#define PAB_TARGET_DEV(x)			(((x) & 0x1f) << 19)
+#define PAB_TARGET_FUNC(x)			(((x) & 0x7) << 16)
+
+#define PAB_AXI_TYPE_CFG			0x00
+#define PAB_AXI_TYPE_IO				0x01
+#define PAB_AXI_TYPE_MEM			0x02
+#define PAB_AXI_TYPE_ATOM			0x03
+
+#define PAB_WINS_NUM				256
+
+/* PPIO WINs RC mode */
+#define PAB_PEX_AMAP_CTRL(idx)			(0x4ba0 + 0x10 * (idx))
+#define PAB_EXT_PEX_AMAP_SIZE(idx)		(0xbef0 + 0x04 * (idx))
+#define PAB_PEX_AMAP_AXI_WIN(idx)		(0x4ba4 + 0x10 * (idx))
+#define PAB_EXT_PEX_AMAP_AXI_WIN(idx)		(0xb4a0 + 0x04 * (idx))
+#define PAB_PEX_AMAP_PEX_WIN_L(idx)		(0x4ba8 + 0x10 * (idx))
+#define PAB_PEX_AMAP_PEX_WIN_H(idx)		(0x4bac + 0x10 * (idx))
+
+#define IB_TYPE_MEM_F				0x2
+#define IB_TYPE_MEM_NF				0x3
+
+#define PEX_AMAP_CTRL_TYPE_SHIFT		0x1
+#define PEX_AMAP_CTRL_EN_SHIFT			0x0
+#define PEX_AMAP_CTRL_TYPE_MASK			0x3
+#define PEX_AMAP_CTRL_EN_MASK			0x1
+
+/* PPIO WINs EP mode */
+#define PAB_PEX_BAR_AMAP(pf, bar)		\
+	(0x1ba0 + 0x20 * (pf) + 4 * (bar))
+#define BAR_AMAP_EN				BIT(0)
+#define PAB_EXT_PEX_BAR_AMAP(pf, bar)		\
+	(0x84a0 + 0x20 * (pf) + 4 * (bar))
+
+/* CCSR registers */
+#define PCIE_LINK_CTRL_STA			0x5c
+#define PCIE_LINK_SPEED_SHIFT			16
+#define PCIE_LINK_SPEED_MASK			0x0f
+#define PCIE_LINK_WIDTH_SHIFT			20
+#define PCIE_LINK_WIDTH_MASK			0x3f
+#define PCIE_SRIOV_CAPABILITY			0x2a0
+#define PCIE_SRIOV_VF_OFFSET_STRIDE		0x2b4
+
+/* LUT registers */
+#define PCIE_LUT_UDR(n)				(0x800 + (n) * 8)
+#define PCIE_LUT_LDR(n)				(0x804 + (n) * 8)
+#define PCIE_LUT_ENABLE				BIT(31)
+#define PCIE_LUT_ENTRY_COUNT			32
+
+/* PF control registers */
+#define PCIE_LTSSM_STA				0x7fc
+#define LTSSM_STATE_MASK			0x7f
+#define LTSSM_PCIE_L0				0x2d /* L0 state */
+
+#define PCIE_SRDS_PRTCL(idx)			(PCIE1 + (idx))
+#define PCIE_SYS_BASE_ADDR			0x3400000
+#define PCIE_CCSR_SIZE				0x0100000
+
+struct ls_pcie_g4 {
+	int idx;
+	struct list_head list;
+	struct udevice *bus;
+	struct fdt_resource ccsr_res;
+	struct fdt_resource cfg_res;
+	struct fdt_resource lut_res;
+	struct fdt_resource pf_ctrl_res;
+	void __iomem *ccsr;
+	void __iomem *cfg;
+	void __iomem *lut;
+	void __iomem *pf_ctrl;
+	bool big_endian;
+	bool enabled;
+	int next_lut_index;
+	struct pci_controller hose;
+	int stream_id_cur;
+	int mode;
+	int sriov_support;
+};
+
+extern struct list_head ls_pcie_g4_list;
+
+static inline void lut_writel(struct ls_pcie_g4 *pcie, unsigned int value,
+			      unsigned int offset)
+{
+	if (pcie->big_endian)
+		out_be32(pcie->lut + offset, value);
+	else
+		out_le32(pcie->lut + offset, value);
+}
+
+static inline u32 lut_readl(struct ls_pcie_g4 *pcie, unsigned int offset)
+{
+	if (pcie->big_endian)
+		return in_be32(pcie->lut + offset);
+	else
+		return in_le32(pcie->lut + offset);
+}
+
+static inline void ccsr_set_page(struct ls_pcie_g4 *pcie, u8 pg_idx)
+{
+	u32 val;
+
+	val = in_le32(pcie->ccsr + PAB_CTRL);
+	val &= ~(PAB_CTRL_PAGE_SEL_MASK << PAB_CTRL_PAGE_SEL_SHIFT);
+	val |= (pg_idx & PAB_CTRL_PAGE_SEL_MASK) << PAB_CTRL_PAGE_SEL_SHIFT;
+
+	out_le32(pcie->ccsr + PAB_CTRL, val);
+}
+
+static inline unsigned int ccsr_readl(struct ls_pcie_g4 *pcie, u32 offset)
+{
+	if (offset < INDIRECT_ADDR_BNDRY) {
+		ccsr_set_page(pcie, 0);
+		return in_le32(pcie->ccsr + offset);
+	}
+
+	ccsr_set_page(pcie, OFFSET_TO_PAGE_IDX(offset));
+	return in_le32(pcie->ccsr + OFFSET_TO_PAGE_ADDR(offset));
+}
+
+static inline void ccsr_writel(struct ls_pcie_g4 *pcie, u32 offset, u32 value)
+{
+	if (offset < INDIRECT_ADDR_BNDRY) {
+		ccsr_set_page(pcie, 0);
+		out_le32(pcie->ccsr + offset, value);
+	} else {
+		ccsr_set_page(pcie, OFFSET_TO_PAGE_IDX(offset));
+		out_le32(pcie->ccsr + OFFSET_TO_PAGE_ADDR(offset), value);
+	}
+}
+
+static inline unsigned int pf_ctrl_readl(struct ls_pcie_g4 *pcie, u32 offset)
+{
+	if (pcie->big_endian)
+		return in_be32(pcie->pf_ctrl + offset);
+	else
+		return in_le32(pcie->pf_ctrl + offset);
+}
+
+static inline void pf_ctrl_writel(struct ls_pcie_g4 *pcie, u32 offset,
+				  u32 value)
+{
+	if (pcie->big_endian)
+		out_be32(pcie->pf_ctrl + offset, value);
+	else
+		out_le32(pcie->pf_ctrl + offset, value);
+}
+
+#endif /* _PCIE_LAYERSCAPE_GEN4_H_ */