Add 5.4 kernel version as a new testing kernel option.
Run-tested on Shuttle KD20, seems to work just as well as kernel 4.14.
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
MAINTAINER:=Daniel Golle <daniel@makrotopia.org>
KERNEL_PATCHVER:=4.14
+KERNEL_TESTING_PATCHVER:=5.4
include $(INCLUDE_DIR)/target.mk
--- /dev/null
+CONFIG_64BIT_TIME=y
+CONFIG_ALIGNMENT_TRAP=y
+CONFIG_ARCH_32BIT_OFF_T=y
+CONFIG_ARCH_CLOCKSOURCE_DATA=y
+CONFIG_ARCH_HAS_BINFMT_FLAT=y
+CONFIG_ARCH_HAS_DEBUG_VIRTUAL=y
+CONFIG_ARCH_HAS_DMA_WRITE_COMBINE=y
+CONFIG_ARCH_HAS_ELF_RANDOMIZE=y
+CONFIG_ARCH_HAS_FORTIFY_SOURCE=y
+CONFIG_ARCH_HAS_GCOV_PROFILE_ALL=y
+CONFIG_ARCH_HAS_KCOV=y
+CONFIG_ARCH_HAS_KEEPINITRD=y
+CONFIG_ARCH_HAS_MEMBARRIER_SYNC_CORE=y
+CONFIG_ARCH_HAS_PHYS_TO_DMA=y
+CONFIG_ARCH_HAS_RESET_CONTROLLER=y
+CONFIG_ARCH_HAS_SETUP_DMA_OPS=y
+CONFIG_ARCH_HAS_SET_MEMORY=y
+CONFIG_ARCH_HAS_STRICT_KERNEL_RWX=y
+CONFIG_ARCH_HAS_STRICT_MODULE_RWX=y
+CONFIG_ARCH_HAS_TEARDOWN_DMA_OPS=y
+CONFIG_ARCH_HAVE_CUSTOM_GPIO_H=y
+CONFIG_ARCH_HIBERNATION_POSSIBLE=y
+CONFIG_ARCH_KEEP_MEMBLOCK=y
+CONFIG_ARCH_MIGHT_HAVE_PC_PARPORT=y
+CONFIG_ARCH_MULTIPLATFORM=y
+CONFIG_ARCH_MULTI_CPU_AUTO=y
+# CONFIG_ARCH_MULTI_V4 is not set
+# CONFIG_ARCH_MULTI_V4T is not set
+CONFIG_ARCH_MULTI_V4_V5=y
+CONFIG_ARCH_MULTI_V5=y
+CONFIG_ARCH_NR_GPIO=0
+CONFIG_ARCH_OPTIONAL_KERNEL_RWX=y
+CONFIG_ARCH_OXNAS=y
+CONFIG_ARCH_SUPPORTS_ATOMIC_RMW=y
+CONFIG_ARCH_SUPPORTS_UPROBES=y
+CONFIG_ARCH_SUSPEND_POSSIBLE=y
+CONFIG_ARCH_USE_BUILTIN_BSWAP=y
+CONFIG_ARCH_USE_CMPXCHG_LOCKREF=y
+CONFIG_ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT=y
+CONFIG_ARCH_WANT_GENERAL_HUGETLB=y
+CONFIG_ARCH_WANT_IPC_PARSE_VERSION=y
+CONFIG_ARCH_WANT_LIBATA_LEDS=y
+CONFIG_ARM=y
+CONFIG_ARM_APPENDED_DTB=y
+CONFIG_ARM_ATAG_DTB_COMPAT=y
+# CONFIG_ARM_ATAG_DTB_COMPAT_CMDLINE_EXTEND is not set
+# CONFIG_ARM_ATAG_DTB_COMPAT_CMDLINE_FROM_BOOTLOADER is not set
+CONFIG_ARM_ATAG_DTB_COMPAT_CMDLINE_MANGLE=y
+CONFIG_ARM_CPU_SUSPEND=y
+CONFIG_ARM_HAS_SG_CHAIN=y
+CONFIG_ARM_L1_CACHE_SHIFT=5
+CONFIG_ARM_PATCH_PHYS_VIRT=y
+CONFIG_ARM_PMU=y
+# CONFIG_ARM_SMMU is not set
+CONFIG_ARM_THUMB=y
+CONFIG_ARM_UNWIND=y
+CONFIG_ATAGS=y
+CONFIG_AUTO_ZRELADDR=y
+CONFIG_BINFMT_FLAT_ARGVP_ENVP_ON_STACK=y
+CONFIG_BLK_CMDLINE_PARSER=y
+CONFIG_BLK_DEBUG_FS=y
+CONFIG_BLK_DEV_BSG=y
+CONFIG_BLK_DEV_LOOP=y
+CONFIG_BLK_DEV_RAM=y
+CONFIG_BLK_DEV_RAM_COUNT=16
+CONFIG_BLK_DEV_RAM_SIZE=65536
+CONFIG_BLK_PM=y
+CONFIG_BLK_SCSI_REQUEST=y
+# CONFIG_BPF_SYSCALL is not set
+CONFIG_CC_HAS_KASAN_GENERIC=y
+CONFIG_CLKDEV_LOOKUP=y
+CONFIG_CLKSRC_MMIO=y
+CONFIG_CLONE_BACKWARDS=y
+CONFIG_CMA=y
+CONFIG_CMA_ALIGNMENT=8
+CONFIG_CMA_AREAS=7
+# CONFIG_CMA_DEBUG is not set
+# CONFIG_CMA_DEBUGFS is not set
+CONFIG_CMA_SIZE_MBYTES=64
+# CONFIG_CMA_SIZE_SEL_MAX is not set
+CONFIG_CMA_SIZE_SEL_MBYTES=y
+# CONFIG_CMA_SIZE_SEL_MIN is not set
+# CONFIG_CMA_SIZE_SEL_PERCENTAGE is not set
+CONFIG_CMDLINE_PARTITION=y
+CONFIG_COMMON_CLK=y
+CONFIG_COMMON_CLK_OXNAS=y
+CONFIG_COMPAT_32BIT_TIME=y
+CONFIG_CONTIG_ALLOC=y
+CONFIG_COREDUMP=y
+CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS=y
+CONFIG_CPU_32v5=y
+CONFIG_CPU_ABRT_EV5TJ=y
+CONFIG_CPU_ARM926T=y
+# CONFIG_CPU_CACHE_ROUND_ROBIN is not set
+CONFIG_CPU_CACHE_VIVT=y
+CONFIG_CPU_COPY_V4WB=y
+CONFIG_CPU_CP15=y
+CONFIG_CPU_CP15_MMU=y
+# CONFIG_CPU_DCACHE_WRITETHROUGH is not set
+# CONFIG_CPU_ICACHE_DISABLE is not set
+CONFIG_CPU_PABRT_LEGACY=y
+CONFIG_CPU_PM=y
+# CONFIG_CPU_IDLE_GOV_TEO is not set
+CONFIG_CPU_THUMB_CAPABLE=y
+CONFIG_CPU_TLB_V4WBI=y
+CONFIG_CPU_USE_DOMAINS=y
+CONFIG_CRASH_CORE=y
+CONFIG_CRC16=y
+# CONFIG_CRC32_SARWATE is not set
+CONFIG_CRC32_SLICEBY8=y
+CONFIG_CROSS_MEMORY_ATTACH=y
+CONFIG_CRYPTO_RNG2=y
+CONFIG_DEBUG_ALIGN_RODATA=y
+CONFIG_DEBUG_BUGVERBOSE=y
+CONFIG_DEBUG_LL_INCLUDE="mach/debug-macro.S"
+# CONFIG_DEBUG_USER is not set
+CONFIG_DECOMPRESS_BZIP2=y
+CONFIG_DECOMPRESS_GZIP=y
+CONFIG_DECOMPRESS_LZ4=y
+CONFIG_DECOMPRESS_LZMA=y
+CONFIG_DECOMPRESS_LZO=y
+CONFIG_DECOMPRESS_XZ=y
+CONFIG_DEVTMPFS=y
+CONFIG_DEVTMPFS_MOUNT=y
+CONFIG_DMA_CMA=y
+CONFIG_DMA_DECLARE_COHERENT=y
+CONFIG_DMA_REMAP=y
+CONFIG_DNOTIFY=y
+CONFIG_DTC=y
+# CONFIG_DWMAC_DWC_QOS_ETH is not set
+CONFIG_DWMAC_GENERIC=y
+CONFIG_DWMAC_OXNAS=y
+CONFIG_EDAC_ATOMIC_SCRUB=y
+CONFIG_EDAC_SUPPORT=y
+CONFIG_ELF_CORE=y
+CONFIG_FAT_FS=y
+CONFIG_FIXED_PHY=y
+CONFIG_FIX_EARLYCON_MEM=y
+CONFIG_FREEZER=y
+CONFIG_FW_LOADER_PAGED_BUF=y
+CONFIG_GENERIC_ALLOCATOR=y
+CONFIG_GENERIC_ATOMIC64=y
+CONFIG_GENERIC_BUG=y
+CONFIG_GENERIC_CLOCKEVENTS=y
+CONFIG_GENERIC_CPU_AUTOPROBE=y
+CONFIG_GENERIC_EARLY_IOREMAP=y
+CONFIG_GENERIC_IDLE_POLL_SETUP=y
+CONFIG_GENERIC_IRQ_MULTI_HANDLER=y
+CONFIG_GENERIC_IRQ_SHOW=y
+CONFIG_GENERIC_IRQ_SHOW_LEVEL=y
+CONFIG_GENERIC_PCI_IOMAP=y
+CONFIG_GENERIC_PHY=y
+CONFIG_GENERIC_PINCONF=y
+CONFIG_GENERIC_SCHED_CLOCK=y
+CONFIG_GENERIC_SMP_IDLE_THREAD=y
+CONFIG_GENERIC_STRNCPY_FROM_USER=y
+CONFIG_GENERIC_STRNLEN_USER=y
+CONFIG_GPIOLIB=y
+CONFIG_GPIOLIB_IRQCHIP=y
+CONFIG_GPIO_GENERIC=y
+CONFIG_GPIO_GENERIC_PLATFORM=y
+CONFIG_HANDLE_DOMAIN_IRQ=y
+CONFIG_HARDIRQS_SW_RESEND=y
+CONFIG_HAS_DMA=y
+CONFIG_HAS_IOMEM=y
+CONFIG_HAS_IOPORT_MAP=y
+CONFIG_HAVE_ARCH_AUDITSYSCALL=y
+CONFIG_HAVE_ARCH_JUMP_LABEL=y
+CONFIG_HAVE_ARCH_KGDB=y
+CONFIG_HAVE_ARCH_PFN_VALID=y
+CONFIG_HAVE_ARCH_SECCOMP_FILTER=y
+CONFIG_HAVE_ARCH_THREAD_STRUCT_WHITELIST=y
+CONFIG_HAVE_ARCH_TRACEHOOK=y
+CONFIG_HAVE_CLK=y
+CONFIG_HAVE_CLK_PREPARE=y
+CONFIG_HAVE_CONTEXT_TRACKING=y
+CONFIG_HAVE_COPY_THREAD_TLS=y
+CONFIG_HAVE_C_RECORDMCOUNT=y
+CONFIG_HAVE_DEBUG_KMEMLEAK=y
+CONFIG_HAVE_DMA_CONTIGUOUS=y
+CONFIG_HAVE_DYNAMIC_FTRACE=y
+CONFIG_HAVE_DYNAMIC_FTRACE_WITH_REGS=y
+CONFIG_HAVE_EBPF_JIT=y
+CONFIG_HAVE_FTRACE_MCOUNT_RECORD=y
+CONFIG_HAVE_FUNCTION_GRAPH_TRACER=y
+CONFIG_HAVE_FUNCTION_TRACER=y
+CONFIG_HAVE_IRQ_TIME_ACCOUNTING=y
+CONFIG_HAVE_LD_DEAD_CODE_DATA_ELIMINATION=y
+CONFIG_HAVE_MOD_ARCH_SPECIFIC=y
+CONFIG_HAVE_NET_DSA=y
+CONFIG_HAVE_OPROFILE=y
+CONFIG_HAVE_OPTPROBES=y
+CONFIG_HAVE_PCI=y
+CONFIG_HAVE_PERF_EVENTS=y
+CONFIG_HAVE_PERF_REGS=y
+CONFIG_HAVE_PERF_USER_STACK_DUMP=y
+CONFIG_HAVE_PROC_CPU=y
+CONFIG_HAVE_REGS_AND_STACK_ACCESS_API=y
+CONFIG_HAVE_RSEQ=y
+CONFIG_HAVE_SYSCALL_TRACEPOINTS=y
+CONFIG_HAVE_UID16=y
+CONFIG_HAVE_VIRT_CPU_ACCOUNTING_GEN=y
+CONFIG_HID=y
+CONFIG_HID_GENERIC=y
+CONFIG_HWMON=y
+CONFIG_HZ_FIXED=0
+CONFIG_ICPLUS_PHY=y
+CONFIG_INET_DIAG=y
+# CONFIG_INET_DIAG_DESTROY is not set
+# CONFIG_INET_RAW_DIAG is not set
+CONFIG_INET_TCP_DIAG=y
+CONFIG_INITRAMFS_SOURCE=""
+CONFIG_INPUT=y
+# CONFIG_IOMMU_DEBUGFS is not set
+# CONFIG_IOMMU_IO_PGTABLE_ARMV7S is not set
+# CONFIG_IOMMU_IO_PGTABLE_LPAE is not set
+CONFIG_IOMMU_SUPPORT=y
+CONFIG_IRQCHIP=y
+CONFIG_IRQ_DOMAIN=y
+CONFIG_IRQ_FORCED_THREADING=y
+CONFIG_IRQ_WORK=y
+# CONFIG_ISDN is not set
+# CONFIG_JFFS2_FS is not set
+CONFIG_KALLSYMS=y
+CONFIG_KASAN_STACK=1
+CONFIG_KERNEL_GZIP=y
+# CONFIG_KERNEL_XZ is not set
+CONFIG_KEXEC=y
+CONFIG_KEXEC_CORE=y
+# CONFIG_LEDS_BRIGHTNESS_HW_CHANGED is not set
+CONFIG_LEDS_GPIO=y
+CONFIG_LEDS_TRIGGER_CPU=y
+CONFIG_LEDS_TRIGGER_GPIO=y
+CONFIG_LEDS_TRIGGER_HEARTBEAT=y
+# CONFIG_LEDS_TRIGGER_NETDEV is not set
+CONFIG_LEDS_TRIGGER_ONESHOT=y
+CONFIG_LIBFDT=y
+CONFIG_LOCALVERSION_AUTO=y
+CONFIG_LOCK_DEBUGGING_SUPPORT=y
+CONFIG_LZ4_DECOMPRESS=y
+CONFIG_LZO_DECOMPRESS=y
+# CONFIG_MACH_OX810SE is not set
+CONFIG_MDIO_BUS=y
+CONFIG_MDIO_DEVICE=y
+CONFIG_MEMFD_CREATE=y
+CONFIG_MEMORY_ISOLATION=y
+CONFIG_MFD_SYSCON=y
+CONFIG_MIGRATION=y
+CONFIG_MODULES_TREE_LOOKUP=y
+CONFIG_MODULES_USE_ELF_REL=y
+CONFIG_NEED_DMA_MAP_STATE=y
+CONFIG_NEED_KUSER_HELPERS=y
+CONFIG_NEED_PER_CPU_KM=y
+CONFIG_NET_PTP_CLASSIFY=y
+CONFIG_NLS=y
+CONFIG_NO_HZ=y
+CONFIG_NO_HZ_COMMON=y
+CONFIG_NO_HZ_IDLE=y
+# CONFIG_NVMEM_REBOOT_MODE is not set
+CONFIG_OF=y
+CONFIG_OF_ADDRESS=y
+CONFIG_OF_EARLY_FLATTREE=y
+CONFIG_OF_FLATTREE=y
+CONFIG_OF_GPIO=y
+CONFIG_OF_IRQ=y
+CONFIG_OF_KOBJ=y
+CONFIG_OF_MDIO=y
+CONFIG_OF_NET=y
+CONFIG_OF_RESERVED_MEM=y
+CONFIG_OLD_SIGACTION=y
+CONFIG_OLD_SIGSUSPEND3=y
+CONFIG_OXNAS_RPS_TIMER=y
+CONFIG_PAGE_OFFSET=0xC0000000
+CONFIG_PAGE_POOL=y
+# CONFIG_PANIC_ON_OOPS is not set
+CONFIG_PANIC_ON_OOPS_VALUE=0
+CONFIG_PANIC_TIMEOUT=0
+CONFIG_PERF_EVENTS=y
+CONFIG_PERF_USE_VMALLOC=y
+CONFIG_PGTABLE_LEVELS=2
+CONFIG_PHYLIB=y
+CONFIG_PHYLINK=y
+CONFIG_PHY_OXNAS=y
+CONFIG_PINCTRL=y
+CONFIG_PINCTRL_OXNAS=y
+# CONFIG_PINCTRL_SINGLE is not set
+CONFIG_PLUGIN_HOSTCC="g++"
+CONFIG_PM=y
+CONFIG_PM_CLK=y
+# CONFIG_PM_DEBUG is not set
+CONFIG_PM_SLEEP=y
+CONFIG_POWER_RESET=y
+CONFIG_POWER_RESET_OXNAS=y
+CONFIG_PPS=y
+CONFIG_PTP_1588_CLOCK=y
+CONFIG_RAS=y
+CONFIG_RATIONAL=y
+CONFIG_RCU_TRACE=y
+CONFIG_RD_BZIP2=y
+CONFIG_RD_GZIP=y
+CONFIG_RD_LZ4=y
+CONFIG_RD_LZMA=y
+CONFIG_RD_LZO=y
+CONFIG_RD_XZ=y
+CONFIG_REALTEK_PHY=y
+CONFIG_REFCOUNT_FULL=y
+CONFIG_REGMAP=y
+CONFIG_REGMAP_MMIO=y
+CONFIG_RESET_CONTROLLER=y
+CONFIG_RESET_OXNAS=y
+CONFIG_SCHED_DEBUG=y
+CONFIG_SERIAL_8250_DEPRECATED_OPTIONS=y
+CONFIG_SERIAL_8250_FSL=y
+CONFIG_SERIAL_8250_NR_UARTS=4
+CONFIG_SERIAL_8250_RUNTIME_UARTS=4
+CONFIG_SERIAL_MCTRL_GPIO=y
+CONFIG_SERIAL_OF_PLATFORM=y
+CONFIG_SERIO=y
+CONFIG_SERIO_LIBPS2=y
+CONFIG_SERIO_SERPORT=y
+CONFIG_SIMPLE_PM_BUS=y
+CONFIG_SLUB_DEBUG=y
+CONFIG_SOCK_DIAG=y
+CONFIG_SPARSE_IRQ=y
+CONFIG_SPLIT_PTLOCK_CPUS=999999
+CONFIG_SRCU=y
+CONFIG_STACKTRACE=y
+# CONFIG_STAGING is not set
+CONFIG_STMMAC_ETH=y
+CONFIG_STMMAC_PLATFORM=y
+# CONFIG_STMMAC_SELFTESTS is not set
+# CONFIG_STRIP_ASM_SYMS is not set
+CONFIG_SUSPEND=y
+CONFIG_SUSPEND_FREEZER=y
+CONFIG_SWPHY=y
+CONFIG_SYS_SUPPORTS_APM_EMULATION=y
+CONFIG_TICK_CPU_ACCOUNTING=y
+CONFIG_TIMER_OF=y
+CONFIG_TIMER_PROBE=y
+CONFIG_TINY_SRCU=y
+CONFIG_TRACE_CLOCK=y
+CONFIG_UBSAN_ALIGNMENT=y
+CONFIG_UEVENT_HELPER_PATH=""
+CONFIG_UNCOMPRESS_INCLUDE="debug/uncompress.h"
+CONFIG_UNIX_SCM=y
+CONFIG_UNWINDER_ARM=y
+# CONFIG_UNWINDER_FRAME_POINTER is not set
+CONFIG_USB_SUPPORT=y
+# CONFIG_USERIO is not set
+CONFIG_USE_OF=y
+CONFIG_VERSATILE_FPGA_IRQ=y
+CONFIG_VERSATILE_FPGA_IRQ_NR=4
+CONFIG_VFAT_FS=y
+# CONFIG_VFP is not set
+# CONFIG_VLAN_8021Q is not set
+CONFIG_VM_EVENT_COUNTERS=y
+# CONFIG_WATCHDOG is not set
+# CONFIG_WQ_POWER_EFFICIENT_DEFAULT is not set
+CONFIG_XZ_DEC_ARM=y
+CONFIG_XZ_DEC_BCJ=y
+CONFIG_XZ_DEC_IA64=y
+CONFIG_XZ_DEC_POWERPC=y
+CONFIG_XZ_DEC_SPARC=y
+CONFIG_XZ_DEC_X86=y
+CONFIG_ZBOOT_ROM_BSS=0
+CONFIG_ZBOOT_ROM_TEXT=0
+CONFIG_ZLIB_INFLATE=y
--- /dev/null
+/*
+ * PCIe driver for PLX NAS782X SoCs
+ *
+ * Author: Ma Haijun <mahaijuns@gmail.com>
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2. This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ */
+
+#include <linux/kernel.h>
+#include <linux/pci.h>
+#include <linux/clk.h>
+#include <linux/module.h>
+#include <linux/mbus.h>
+#include <linux/mfd/syscon.h>
+#include <linux/slab.h>
+#include <linux/platform_device.h>
+#include <linux/of_address.h>
+#include <linux/of_device.h>
+#include <linux/of_gpio.h>
+#include <linux/of_irq.h>
+#include <linux/of_pci.h>
+#include <linux/of_platform.h>
+#include <linux/gpio.h>
+#include <linux/delay.h>
+#include <linux/clk.h>
+#include <linux/phy.h>
+#include <linux/phy/phy.h>
+#include <linux/regmap.h>
+#include <linux/reset.h>
+#include <linux/io.h>
+#include <linux/sizes.h>
+
+#define SYS_CTRL_HCSL_CTRL_REGOFFSET 0x114
+
+static inline void oxnas_register_clear_mask(void __iomem *p, unsigned mask)
+{
+ u32 val = readl_relaxed(p);
+
+ val &= ~mask;
+ writel_relaxed(val, p);
+}
+
+static inline void oxnas_register_set_mask(void __iomem *p, unsigned mask)
+{
+ u32 val = readl_relaxed(p);
+
+ val |= mask;
+ writel_relaxed(val, p);
+}
+
+static inline void oxnas_register_value_mask(void __iomem *p,
+ unsigned mask, unsigned new_value)
+{
+ /* TODO sanity check mask & new_value = new_value */
+ u32 val = readl_relaxed(p);
+
+ val &= ~mask;
+ val |= new_value;
+ writel_relaxed(val, p);
+}
+
+#define VERSION_ID_MAGIC 0x082510b5
+#define LINK_UP_TIMEOUT_SECONDS 1
+#define NUM_CONTROLLERS 1
+
+enum {
+ PCIE_DEVICE_TYPE_MASK = 0x0F,
+ PCIE_DEVICE_TYPE_ENDPOINT = 0,
+ PCIE_DEVICE_TYPE_LEGACY_ENDPOINT = 1,
+ PCIE_DEVICE_TYPE_ROOT = 4,
+
+ PCIE_LTSSM = BIT(4),
+ PCIE_READY_ENTR_L23 = BIT(9),
+ PCIE_LINK_UP = BIT(11),
+ PCIE_OBTRANS = BIT(12),
+};
+
+/* core config registers */
+enum {
+ PCI_CONFIG_VERSION_DEVICEID = 0,
+ PCI_CONFIG_COMMAND_STATUS = 4,
+};
+
+/* inbound config registers */
+enum {
+ IB_ADDR_XLATE_ENABLE = 0xFC,
+
+ /* bits */
+ ENABLE_IN_ADDR_TRANS = BIT(0),
+};
+
+/* outbound config registers, offset relative to PCIE_POM0_MEM_ADDR */
+enum {
+ PCIE_POM0_MEM_ADDR = 0,
+ PCIE_POM1_MEM_ADDR = 4,
+ PCIE_IN0_MEM_ADDR = 8,
+ PCIE_IN1_MEM_ADDR = 12,
+ PCIE_IN_IO_ADDR = 16,
+ PCIE_IN_CFG0_ADDR = 20,
+ PCIE_IN_CFG1_ADDR = 24,
+ PCIE_IN_MSG_ADDR = 28,
+ PCIE_IN0_MEM_LIMIT = 32,
+ PCIE_IN1_MEM_LIMIT = 36,
+ PCIE_IN_IO_LIMIT = 40,
+ PCIE_IN_CFG0_LIMIT = 44,
+ PCIE_IN_CFG1_LIMIT = 48,
+ PCIE_IN_MSG_LIMIT = 52,
+ PCIE_AHB_SLAVE_CTRL = 56,
+
+ PCIE_SLAVE_BE_SHIFT = 22,
+};
+
+#define PCIE_SLAVE_BE(val) ((val) << PCIE_SLAVE_BE_SHIFT)
+#define PCIE_SLAVE_BE_MASK PCIE_SLAVE_BE(0xF)
+
+struct oxnas_pcie_shared {
+ /* seems all access are serialized, no lock required */
+ int refcount;
+};
+
+/* Structure representing one PCIe interfaces */
+struct oxnas_pcie {
+ void __iomem *cfgbase;
+ void __iomem *base;
+ void __iomem *inbound;
+ struct regmap *sys_ctrl;
+ unsigned int outbound_offset;
+ unsigned int pcie_ctrl_offset;
+ struct phy *phy;
+ int haslink;
+ struct platform_device *pdev;
+ struct resource io;
+ struct resource cfg;
+ struct resource pre_mem; /* prefetchable */
+ struct resource non_mem; /* non-prefetchable */
+ struct resource busn; /* max available bus numbers */
+ int card_reset; /* gpio pin, optional */
+ unsigned hcsl_en; /* hcsl pci enable bit */
+ struct clk *clk;
+ struct clk *busclk; /* for pcie bus, actually the PLLB */
+ void *private_data[1];
+ spinlock_t lock;
+};
+
+static struct oxnas_pcie_shared pcie_shared = {
+ .refcount = 0,
+};
+
+static inline struct oxnas_pcie *sys_to_pcie(struct pci_sys_data *sys)
+{
+ return sys->private_data;
+}
+
+
+static inline void set_out_lanes(struct oxnas_pcie *pcie, unsigned lanes)
+{
+ regmap_update_bits(pcie->sys_ctrl, pcie->outbound_offset + PCIE_AHB_SLAVE_CTRL,
+ PCIE_SLAVE_BE_MASK, PCIE_SLAVE_BE(lanes));
+ wmb();
+}
+
+static int oxnas_pcie_link_up(struct oxnas_pcie *pcie)
+{
+ unsigned long end;
+ unsigned int val;
+
+ /* Poll for PCIE link up */
+ end = jiffies + (LINK_UP_TIMEOUT_SECONDS * HZ);
+ while (!time_after(jiffies, end)) {
+ regmap_read(pcie->sys_ctrl, pcie->pcie_ctrl_offset, &val);
+ if (val & PCIE_LINK_UP)
+ return 1;
+ }
+ return 0;
+}
+
+static void oxnas_pcie_setup_hw(struct oxnas_pcie *pcie)
+{
+ /* We won't have any inbound address translation. This allows PCI
+ * devices to access anywhere in the AHB address map. Might be regarded
+ * as a bit dangerous, but let's get things working before we worry
+ * about that
+ */
+ oxnas_register_clear_mask(pcie->inbound + IB_ADDR_XLATE_ENABLE,
+ ENABLE_IN_ADDR_TRANS);
+ wmb();
+
+ /*
+ * Program outbound translation windows
+ *
+ * Outbound window is what is referred to as "PCI client" region in HRM
+ *
+ * Could use the larger alternative address space to get >>64M regions
+ * for graphics cards etc., but will not bother at this point.
+ *
+ * IP bug means that AMBA window size must be a power of 2
+ *
+ * Set mem0 window for first 16MB of outbound window non-prefetchable
+ * Set mem1 window for second 16MB of outbound window prefetchable
+ * Set io window for next 16MB of outbound window
+ * Set cfg0 for final 1MB of outbound window
+ *
+ * Ignore mem1, cfg1 and msg windows for now as no obvious use cases for
+ * 820 that would need them
+ *
+ * Probably ideally want no offset between mem0 window start as seen by
+ * ARM and as seen on PCI bus and get Linux to assign memory regions to
+ * PCI devices using the same "PCI client" region start address as seen
+ * by ARM
+ */
+
+ /* Set PCIeA mem0 region to be 1st 16MB of the 64MB PCIeA window */
+ regmap_write(pcie->sys_ctrl, pcie->outbound_offset + PCIE_IN0_MEM_ADDR, pcie->non_mem.start);
+ regmap_write(pcie->sys_ctrl, pcie->outbound_offset + PCIE_IN0_MEM_LIMIT, pcie->non_mem.end);
+ regmap_write(pcie->sys_ctrl, pcie->outbound_offset + PCIE_POM0_MEM_ADDR, pcie->non_mem.start);
+
+ /* Set PCIeA mem1 region to be 2nd 16MB of the 64MB PCIeA window */
+ regmap_write(pcie->sys_ctrl, pcie->outbound_offset + PCIE_IN1_MEM_ADDR, pcie->pre_mem.start);
+ regmap_write(pcie->sys_ctrl, pcie->outbound_offset + PCIE_IN1_MEM_LIMIT, pcie->pre_mem.end);
+ regmap_write(pcie->sys_ctrl, pcie->outbound_offset + PCIE_POM1_MEM_ADDR, pcie->pre_mem.start);
+
+ /* Set PCIeA io to be third 16M region of the 64MB PCIeA window*/
+ regmap_write(pcie->sys_ctrl, pcie->outbound_offset + PCIE_IN_IO_ADDR, pcie->io.start);
+ regmap_write(pcie->sys_ctrl, pcie->outbound_offset + PCIE_IN_IO_LIMIT, pcie->io.end);
+
+
+ /* Set PCIeA cgf0 to be last 16M region of the 64MB PCIeA window*/
+ regmap_write(pcie->sys_ctrl, pcie->outbound_offset + PCIE_IN_CFG0_ADDR, pcie->cfg.start);
+ regmap_write(pcie->sys_ctrl, pcie->outbound_offset + PCIE_IN_CFG0_LIMIT, pcie->cfg.end);
+ wmb();
+
+ /* Enable outbound address translation */
+ regmap_write_bits(pcie->sys_ctrl, pcie->pcie_ctrl_offset, PCIE_OBTRANS, PCIE_OBTRANS);
+ wmb();
+
+ /*
+ * Program PCIe command register for core to:
+ * enable memory space
+ * enable bus master
+ * enable io
+ */
+ writel_relaxed(7, pcie->base + PCI_CONFIG_COMMAND_STATUS);
+ /* which is which */
+ wmb();
+}
+
+static unsigned oxnas_pcie_cfg_to_offset(
+ struct pci_sys_data *sys,
+ unsigned char bus_number,
+ unsigned int devfn,
+ int where)
+{
+ unsigned int function = PCI_FUNC(devfn);
+ unsigned int slot = PCI_SLOT(devfn);
+ unsigned char bus_number_offset;
+
+ bus_number_offset = bus_number - sys->busnr;
+
+ /*
+ * We'll assume for now that the offset, function, slot, bus encoding
+ * should map onto linear, contiguous addresses in PCIe config space,
+ * albeit that the majority will be unused as only slot 0 is valid for
+ * any PCIe bus and most devices have only function 0
+ *
+ * Could be that PCIe in fact works by not encoding the slot number into
+ * the config space address as it's known that only slot 0 is valid.
+ * We'll have to experiment if/when we get a PCIe switch connected to
+ * the PCIe host
+ */
+ return (bus_number_offset << 20) | (slot << 15) | (function << 12) |
+ (where & ~3);
+}
+
+/* PCI configuration space write function */
+static int oxnas_pcie_wr_conf(struct pci_bus *bus, u32 devfn,
+ int where, int size, u32 val)
+{
+ unsigned long flags;
+ struct oxnas_pcie *pcie = sys_to_pcie(bus->sysdata);
+ unsigned offset;
+ u32 value;
+ u32 lanes;
+
+ /* Only a single device per bus for PCIe point-to-point links */
+ if (PCI_SLOT(devfn) > 0)
+ return PCIBIOS_DEVICE_NOT_FOUND;
+
+ if (!pcie->haslink)
+ return PCIBIOS_DEVICE_NOT_FOUND;
+
+ offset = oxnas_pcie_cfg_to_offset(bus->sysdata, bus->number, devfn,
+ where);
+
+ value = val << (8 * (where & 3));
+ lanes = (0xf >> (4-size)) << (where & 3);
+ /* it race with mem and io write, but the possibility is low, normally
+ * all config writes happens at driver initialize stage, wont interleave
+ * with others.
+ * and many pcie cards use dword (4bytes) access mem/io access only,
+ * so not bother to copy that ugly work-around now. */
+ spin_lock_irqsave(&pcie->lock, flags);
+ set_out_lanes(pcie, lanes);
+ writel_relaxed(value, pcie->cfgbase + offset);
+ set_out_lanes(pcie, 0xf);
+ spin_unlock_irqrestore(&pcie->lock, flags);
+
+ return PCIBIOS_SUCCESSFUL;
+}
+
+/* PCI configuration space read function */
+static int oxnas_pcie_rd_conf(struct pci_bus *bus, u32 devfn, int where,
+ int size, u32 *val)
+{
+ struct oxnas_pcie *pcie = sys_to_pcie(bus->sysdata);
+ unsigned offset;
+ u32 value;
+ u32 left_bytes, right_bytes;
+
+ /* Only a single device per bus for PCIe point-to-point links */
+ if (PCI_SLOT(devfn) > 0) {
+ *val = 0xffffffff;
+ return PCIBIOS_DEVICE_NOT_FOUND;
+ }
+
+ if (!pcie->haslink) {
+ *val = 0xffffffff;
+ return PCIBIOS_DEVICE_NOT_FOUND;
+ }
+
+ offset = oxnas_pcie_cfg_to_offset(bus->sysdata, bus->number, devfn,
+ where);
+ value = readl_relaxed(pcie->cfgbase + offset);
+ left_bytes = where & 3;
+ right_bytes = 4 - left_bytes - size;
+ value <<= right_bytes * 8;
+ value >>= (left_bytes + right_bytes) * 8;
+ *val = value;
+
+ return PCIBIOS_SUCCESSFUL;
+}
+
+static struct pci_ops oxnas_pcie_ops = {
+ .read = oxnas_pcie_rd_conf,
+ .write = oxnas_pcie_wr_conf,
+};
+
+static int oxnas_pcie_setup(int nr, struct pci_sys_data *sys)
+{
+ struct oxnas_pcie *pcie = sys_to_pcie(sys);
+
+ pci_add_resource_offset(&sys->resources, &pcie->non_mem, sys->mem_offset);
+ pci_add_resource_offset(&sys->resources, &pcie->pre_mem, sys->mem_offset);
+ pci_add_resource_offset(&sys->resources, &pcie->io, sys->io_offset);
+ pci_add_resource(&sys->resources, &pcie->busn);
+ if (sys->busnr == 0) { /* default one */
+ sys->busnr = pcie->busn.start;
+ }
+ /* do not use devm_ioremap_resource, it does not like cfg resource */
+ pcie->cfgbase = devm_ioremap(&pcie->pdev->dev, pcie->cfg.start,
+ resource_size(&pcie->cfg));
+ if (!pcie->cfgbase)
+ return -ENOMEM;
+
+ oxnas_pcie_setup_hw(pcie);
+
+ return 1;
+}
+
+static void oxnas_pcie_enable(struct device *dev, struct oxnas_pcie *pcie)
+{
+ struct hw_pci hw;
+ int i;
+
+ memset(&hw, 0, sizeof(hw));
+ for (i = 0; i < NUM_CONTROLLERS; i++)
+ pcie->private_data[i] = pcie;
+
+ hw.nr_controllers = NUM_CONTROLLERS;
+/* I think use stack pointer is a bad idea though it is valid in this case */
+ hw.private_data = pcie->private_data;
+ hw.setup = oxnas_pcie_setup;
+ hw.map_irq = of_irq_parse_and_map_pci;
+ hw.ops = &oxnas_pcie_ops;
+
+ /* pass dev to maintain of tree, interrupt mapping rely on this */
+ pci_common_init_dev(dev, &hw);
+}
+
+static int oxnas_pcie_shared_init(struct platform_device *pdev, struct oxnas_pcie *pcie)
+{
+ if (++pcie_shared.refcount == 1) {
+ phy_init(pcie->phy);
+ phy_power_on(pcie->phy);
+ return 0;
+ } else {
+ return 0;
+ }
+}
+
+#if 0
+/* maybe we will call it when enter low power state */
+static void oxnas_pcie_shared_deinit(struct platform_device *pdev)
+{
+ if (--pcie_shared.refcount == 0) {
+ /* no cleanup needed */;
+ }
+}
+#endif
+
+static int
+oxnas_pcie_map_registers(struct platform_device *pdev,
+ struct device_node *np,
+ struct oxnas_pcie *pcie)
+{
+ struct resource regs;
+ int ret = 0;
+ u32 outbound_ctrl_offset;
+ u32 pcie_ctrl_offset;
+
+ ret = of_address_to_resource(np, 0, ®s);
+ if (ret) {
+ dev_err(&pdev->dev, "failed to parse base register space\n");
+ return -EINVAL;
+ }
+
+ pcie->base = devm_ioremap_resource(&pdev->dev, ®s);
+ if (!pcie->base) {
+ dev_err(&pdev->dev, "failed to map base register space\n");
+ return -ENOMEM;
+ }
+
+ ret = of_address_to_resource(np, 1, ®s);
+ if (ret) {
+ dev_err(&pdev->dev, "failed to parse inbound register space\n");
+ return -EINVAL;
+ }
+
+ pcie->inbound = devm_ioremap_resource(&pdev->dev, ®s);
+ if (!pcie->inbound) {
+ dev_err(&pdev->dev, "failed to map inbound register space\n");
+ return -ENOMEM;
+ }
+
+ pcie->phy = devm_of_phy_get(&pdev->dev, np, NULL);
+ if (IS_ERR(pcie->phy)) {
+ if (PTR_ERR(pcie->phy) == -EPROBE_DEFER) {
+ dev_err(&pdev->dev, "failed to probe phy\n");
+ return PTR_ERR(pcie->phy);
+ }
+ dev_warn(&pdev->dev, "phy not attached\n");
+ pcie->phy = NULL;
+ }
+
+ if (of_property_read_u32(np, "plxtech,pcie-outbound-offset",
+ &outbound_ctrl_offset)) {
+ dev_err(&pdev->dev, "failed to parse outbound register offset\n");
+ return -EINVAL;
+ }
+ pcie->outbound_offset = outbound_ctrl_offset;
+
+ if (of_property_read_u32(np, "plxtech,pcie-ctrl-offset",
+ &pcie_ctrl_offset)) {
+ dev_err(&pdev->dev, "failed to parse pcie-ctrl register offset\n");
+ return -EINVAL;
+ }
+ pcie->pcie_ctrl_offset = pcie_ctrl_offset;
+
+ return 0;
+}
+
+static int oxnas_pcie_init_res(struct platform_device *pdev,
+ struct oxnas_pcie *pcie,
+ struct device_node *np)
+{
+ struct of_pci_range range;
+ struct of_pci_range_parser parser;
+ int ret;
+
+ if (of_pci_range_parser_init(&parser, np))
+ return -EINVAL;
+
+ /* Get the I/O and memory ranges from DT */
+ for_each_of_pci_range(&parser, &range) {
+
+ unsigned long restype = range.flags & IORESOURCE_TYPE_BITS;
+ if (restype == IORESOURCE_IO) {
+ of_pci_range_to_resource(&range, np, &pcie->io);
+ pcie->io.name = "I/O";
+ }
+ if (restype == IORESOURCE_MEM) {
+ if (range.flags & IORESOURCE_PREFETCH) {
+ of_pci_range_to_resource(&range, np, &pcie->pre_mem);
+ pcie->pre_mem.name = "PRE MEM";
+ } else {
+ of_pci_range_to_resource(&range, np, &pcie->non_mem);
+ pcie->non_mem.name = "NON MEM";
+ }
+
+ }
+ if (restype == 0)
+ of_pci_range_to_resource(&range, np, &pcie->cfg);
+ }
+
+ /* Get the bus range */
+ ret = of_pci_parse_bus_range(np, &pcie->busn);
+
+ if (ret) {
+ dev_err(&pdev->dev, "failed to parse bus-range property: %d\n",
+ ret);
+ return ret;
+ }
+
+ pcie->card_reset = of_get_gpio(np, 0);
+ if (pcie->card_reset < 0)
+ dev_info(&pdev->dev, "card reset gpio pin not exists\n");
+
+ if (of_property_read_u32(np, "plxtech,pcie-hcsl-bit", &pcie->hcsl_en))
+ return -EINVAL;
+
+ pcie->clk = of_clk_get_by_name(np, "pcie");
+ if (IS_ERR(pcie->clk)) {
+ return PTR_ERR(pcie->clk);
+ }
+
+ pcie->busclk = of_clk_get_by_name(np, "busclk");
+ if (IS_ERR(pcie->busclk)) {
+ clk_put(pcie->clk);
+ return PTR_ERR(pcie->busclk);
+ }
+
+ return 0;
+}
+
+static void oxnas_pcie_init_hw(struct platform_device *pdev,
+ struct oxnas_pcie *pcie)
+{
+ u32 version_id;
+ int ret;
+
+ clk_prepare_enable(pcie->busclk);
+
+ /* reset PCIe cards use hard-wired gpio pin */
+ if (pcie->card_reset >= 0 &&
+ !gpio_direction_output(pcie->card_reset, 0)) {
+ wmb();
+ mdelay(10);
+ /* must tri-state the pin to pull it up */
+ gpio_direction_input(pcie->card_reset);
+ wmb();
+ mdelay(100);
+ }
+
+ /* ToDo: use phy power-on port... */
+ regmap_update_bits(pcie->sys_ctrl, SYS_CTRL_HCSL_CTRL_REGOFFSET,
+ BIT(pcie->hcsl_en), BIT(pcie->hcsl_en));
+
+ /* core */
+ ret = device_reset(&pdev->dev);
+ if (ret) {
+ dev_err(&pdev->dev, "core reset failed %d\n", ret);
+ return;
+ }
+
+ /* Start PCIe core clocks */
+ clk_prepare_enable(pcie->clk);
+
+ version_id = readl_relaxed(pcie->base + PCI_CONFIG_VERSION_DEVICEID);
+ dev_info(&pdev->dev, "PCIe version/deviceID 0x%x\n", version_id);
+
+ if (version_id != VERSION_ID_MAGIC) {
+ dev_info(&pdev->dev, "PCIe controller not found\n");
+ pcie->haslink = 0;
+ return;
+ }
+
+ /* allow entry to L23 state */
+ regmap_write_bits(pcie->sys_ctrl, pcie->pcie_ctrl_offset,
+ PCIE_READY_ENTR_L23, PCIE_READY_ENTR_L23);
+
+ /* Set PCIe core into RootCore mode */
+ regmap_write_bits(pcie->sys_ctrl, pcie->pcie_ctrl_offset,
+ PCIE_DEVICE_TYPE_MASK, PCIE_DEVICE_TYPE_ROOT);
+ wmb();
+
+ /* Bring up the PCI core */
+ regmap_write_bits(pcie->sys_ctrl, pcie->pcie_ctrl_offset,
+ PCIE_LTSSM, PCIE_LTSSM);
+ wmb();
+}
+
+static int oxnas_pcie_probe(struct platform_device *pdev)
+{
+ struct oxnas_pcie *pcie;
+ struct device_node *np = pdev->dev.of_node;
+ int ret;
+
+ pcie = devm_kzalloc(&pdev->dev, sizeof(struct oxnas_pcie),
+ GFP_KERNEL);
+ if (!pcie)
+ return -ENOMEM;
+
+ pcie->pdev = pdev;
+ pcie->haslink = 1;
+ spin_lock_init(&pcie->lock);
+
+ pcie->sys_ctrl = syscon_regmap_lookup_by_compatible("oxsemi,ox820-sys-ctrl");
+ if (IS_ERR(pcie->sys_ctrl))
+ return PTR_ERR(pcie->sys_ctrl);
+
+ ret = oxnas_pcie_init_res(pdev, pcie, np);
+ if (ret)
+ return ret;
+ if (pcie->card_reset >= 0) {
+ ret = gpio_request_one(pcie->card_reset, GPIOF_DIR_IN,
+ dev_name(&pdev->dev));
+ if (ret) {
+ dev_err(&pdev->dev, "cannot request gpio pin %d\n",
+ pcie->card_reset);
+ return ret;
+ }
+ }
+
+ ret = oxnas_pcie_map_registers(pdev, np, pcie);
+ if (ret) {
+ dev_err(&pdev->dev, "cannot map registers\n");
+ goto err_free_gpio;
+ }
+
+ ret = oxnas_pcie_shared_init(pdev, pcie);
+ if (ret)
+ goto err_free_gpio;
+
+ /* if hw not found, haslink cleared */
+ oxnas_pcie_init_hw(pdev, pcie);
+
+ if (pcie->haslink && oxnas_pcie_link_up(pcie)) {
+ pcie->haslink = 1;
+ dev_info(&pdev->dev, "link up\n");
+ } else {
+ pcie->haslink = 0;
+ dev_info(&pdev->dev, "link down\n");
+ }
+ /* should we register our controller even when pcie->haslink is 0 ? */
+ /* register the controller with framework */
+ oxnas_pcie_enable(&pdev->dev, pcie);
+
+ return 0;
+
+err_free_gpio:
+ if (pcie->card_reset)
+ gpio_free(pcie->card_reset);
+
+ return ret;
+}
+
+static const struct of_device_id oxnas_pcie_of_match_table[] = {
+ { .compatible = "plxtech,nas782x-pcie", },
+ {},
+};
+
+static struct platform_driver oxnas_pcie_driver = {
+ .driver = {
+ .name = "oxnas-pcie",
+ .suppress_bind_attrs = true,
+ .of_match_table = oxnas_pcie_of_match_table,
+ },
+ .probe = oxnas_pcie_probe,
+};
+
+builtin_platform_driver(oxnas_pcie_driver);
--- /dev/null
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2019 Daniel Golle <daniel@makrotopia.org>
+ *
+ */
+
+#include <dt-bindings/phy/phy.h>
+#include <linux/io.h>
+#include <linux/iopoll.h>
+#include <linux/module.h>
+#include <linux/of_address.h>
+#include <linux/of_device.h>
+#include <linux/mfd/syscon.h>
+#include <linux/phy/phy.h>
+#include <linux/platform_device.h>
+#include <linux/regmap.h>
+#include <linux/reset.h>
+
+#define ADDR_VAL(val) ((val) & 0xFFFF)
+#define DATA_VAL(val) ((val) & 0xFFFF)
+
+#define SYS_CTRL_HCSL_CTRL_REGOFFSET 0x114
+
+enum {
+ HCSL_BIAS_ON = BIT(0),
+ HCSL_PCIE_EN = BIT(1),
+ HCSL_PCIEA_EN = BIT(2),
+ HCSL_PCIEB_EN = BIT(3),
+};
+
+enum {
+ /* pcie phy reg offset */
+ PHY_ADDR = 0,
+ PHY_DATA = 4,
+ /* phy data reg bits */
+ READ_EN = BIT(16),
+ WRITE_EN = BIT(17),
+ CAP_DATA = BIT(18),
+};
+
+struct oxnas_pcie_phy {
+ struct device *dev;
+ void __iomem *membase;
+ const struct phy_ops *ops;
+ struct regmap *sys_ctrl;
+};
+
+static int oxnas_pcie_phy_init(struct phy *phy)
+{
+ struct oxnas_pcie_phy *pciephy = phy_get_drvdata(phy);
+ struct reset_control *rstc;
+ int ret;
+
+ /* generate clocks from HCSL buffers, shared parts */
+ regmap_write(pciephy->sys_ctrl, SYS_CTRL_HCSL_CTRL_REGOFFSET, HCSL_BIAS_ON|HCSL_PCIE_EN);
+
+ /* Ensure PCIe PHY is properly reset */
+ rstc = reset_control_get(pciephy->dev, "phy");
+ if (IS_ERR(rstc)) {
+ ret = PTR_ERR(rstc);
+ } else {
+ ret = reset_control_reset(rstc);
+ reset_control_put(rstc);
+ }
+
+ if (ret) {
+ dev_err(pciephy->dev, "phy reset failed %d\n", ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+static int oxnas_pcie_phy_power_on(struct phy *phy)
+{
+ struct oxnas_pcie_phy *pciephy = phy_get_drvdata(phy);
+
+ /* Enable PCIe Pre-Emphasis: What these value means? */
+ writel(ADDR_VAL(0x0014), pciephy->membase + PHY_ADDR);
+ writel(DATA_VAL(0xce10) | CAP_DATA, pciephy->membase + PHY_DATA);
+ writel(DATA_VAL(0xce10) | WRITE_EN, pciephy->membase + PHY_DATA);
+
+ writel(ADDR_VAL(0x2004), pciephy->membase + PHY_ADDR);
+ writel(DATA_VAL(0x82c7) | CAP_DATA, pciephy->membase + PHY_DATA);
+ writel(DATA_VAL(0x82c7) | WRITE_EN, pciephy->membase + PHY_DATA);
+
+ return 0;
+}
+
+static const struct phy_ops ops = {
+ .init = oxnas_pcie_phy_init,
+ .power_on = oxnas_pcie_phy_power_on,
+ .owner = THIS_MODULE,
+};
+
+static int oxnas_pcie_phy_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct device_node *np = pdev->dev.of_node;
+ struct phy *generic_phy;
+ struct phy_provider *phy_provider;
+ struct oxnas_pcie_phy *pciephy;
+ struct regmap *sys_ctrl;
+ void __iomem *membase;
+
+ membase = of_iomap(np, 0);
+ if (IS_ERR(membase))
+ return PTR_ERR(membase);
+
+ sys_ctrl = syscon_regmap_lookup_by_compatible("oxsemi,ox820-sys-ctrl");
+ if (IS_ERR(sys_ctrl)) {
+ dev_err(dev, "Cannot find OX820 SYSCRTL\n");
+ return PTR_ERR(sys_ctrl);
+ }
+
+ pciephy = devm_kzalloc(dev, sizeof(*pciephy), GFP_KERNEL);
+ if (!pciephy)
+ return -ENOMEM;
+
+ pciephy->sys_ctrl = sys_ctrl;
+ pciephy->membase = membase;
+ pciephy->dev = dev;
+ pciephy->ops = &ops;
+
+ generic_phy = devm_phy_create(dev, dev->of_node, pciephy->ops);
+ if (IS_ERR(generic_phy)) {
+ dev_err(dev, "failed to create PHY\n");
+ return PTR_ERR(generic_phy);
+ }
+
+ phy_set_drvdata(generic_phy, pciephy);
+ phy_provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate);
+
+ return PTR_ERR_OR_ZERO(phy_provider);
+}
+
+static const struct of_device_id oxnas_pcie_phy_id_table[] = {
+ { .compatible = "oxsemi,ox820-pcie-phy" },
+ { },
+};
+
+static struct platform_driver oxnas_pcie_phy_driver = {
+ .probe = oxnas_pcie_phy_probe,
+ .driver = {
+ .name = "ox820-pcie-phy",
+ .of_match_table = oxnas_pcie_phy_id_table,
+ },
+};
+
+builtin_platform_driver(oxnas_pcie_phy_driver);
--- /dev/null
+/*
+ * PCIe driver for PLX NAS782X SoCs
+ *
+ * Author: Ma Haijun <mahaijuns@gmail.com>
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2. This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ */
+
+#include <linux/kernel.h>
+#include <linux/pci.h>
+#include <linux/clk.h>
+#include <linux/module.h>
+#include <linux/mbus.h>
+#include <linux/mfd/syscon.h>
+#include <linux/slab.h>
+#include <linux/platform_device.h>
+#include <linux/of_address.h>
+#include <linux/of_device.h>
+#include <linux/of_gpio.h>
+#include <linux/of_irq.h>
+#include <linux/of_pci.h>
+#include <linux/of_platform.h>
+#include <linux/gpio.h>
+#include <linux/delay.h>
+#include <linux/clk.h>
+#include <linux/phy.h>
+#include <linux/phy/phy.h>
+#include <linux/regmap.h>
+#include <linux/reset.h>
+#include <linux/io.h>
+#include <linux/sizes.h>
+
+#include "../pci.h"
+
+#define SYS_CTRL_HCSL_CTRL_REGOFFSET 0x114
+
+static inline void oxnas_register_clear_mask(void __iomem *p, unsigned mask)
+{
+ u32 val = readl_relaxed(p);
+
+ val &= ~mask;
+ writel_relaxed(val, p);
+}
+
+static inline void oxnas_register_set_mask(void __iomem *p, unsigned mask)
+{
+ u32 val = readl_relaxed(p);
+
+ val |= mask;
+ writel_relaxed(val, p);
+}
+
+static inline void oxnas_register_value_mask(void __iomem *p,
+ unsigned mask, unsigned new_value)
+{
+ /* TODO sanity check mask & new_value = new_value */
+ u32 val = readl_relaxed(p);
+
+ val &= ~mask;
+ val |= new_value;
+ writel_relaxed(val, p);
+}
+
+#define VERSION_ID_MAGIC 0x082510b5
+#define LINK_UP_TIMEOUT_SECONDS 1
+#define NUM_CONTROLLERS 1
+
+enum {
+ PCIE_DEVICE_TYPE_MASK = 0x0F,
+ PCIE_DEVICE_TYPE_ENDPOINT = 0,
+ PCIE_DEVICE_TYPE_LEGACY_ENDPOINT = 1,
+ PCIE_DEVICE_TYPE_ROOT = 4,
+
+ PCIE_LTSSM = BIT(4),
+ PCIE_READY_ENTR_L23 = BIT(9),
+ PCIE_LINK_UP = BIT(11),
+ PCIE_OBTRANS = BIT(12),
+};
+
+/* core config registers */
+enum {
+ PCI_CONFIG_VERSION_DEVICEID = 0,
+ PCI_CONFIG_COMMAND_STATUS = 4,
+};
+
+/* inbound config registers */
+enum {
+ IB_ADDR_XLATE_ENABLE = 0xFC,
+
+ /* bits */
+ ENABLE_IN_ADDR_TRANS = BIT(0),
+};
+
+/* outbound config registers, offset relative to PCIE_POM0_MEM_ADDR */
+enum {
+ PCIE_POM0_MEM_ADDR = 0,
+ PCIE_POM1_MEM_ADDR = 4,
+ PCIE_IN0_MEM_ADDR = 8,
+ PCIE_IN1_MEM_ADDR = 12,
+ PCIE_IN_IO_ADDR = 16,
+ PCIE_IN_CFG0_ADDR = 20,
+ PCIE_IN_CFG1_ADDR = 24,
+ PCIE_IN_MSG_ADDR = 28,
+ PCIE_IN0_MEM_LIMIT = 32,
+ PCIE_IN1_MEM_LIMIT = 36,
+ PCIE_IN_IO_LIMIT = 40,
+ PCIE_IN_CFG0_LIMIT = 44,
+ PCIE_IN_CFG1_LIMIT = 48,
+ PCIE_IN_MSG_LIMIT = 52,
+ PCIE_AHB_SLAVE_CTRL = 56,
+
+ PCIE_SLAVE_BE_SHIFT = 22,
+};
+
+#define PCIE_SLAVE_BE(val) ((val) << PCIE_SLAVE_BE_SHIFT)
+#define PCIE_SLAVE_BE_MASK PCIE_SLAVE_BE(0xF)
+
+struct oxnas_pcie_shared {
+ /* seems all access are serialized, no lock required */
+ int refcount;
+};
+
+/* Structure representing one PCIe interfaces */
+struct oxnas_pcie {
+ void __iomem *cfgbase;
+ void __iomem *base;
+ void __iomem *inbound;
+ struct regmap *sys_ctrl;
+ unsigned int outbound_offset;
+ unsigned int pcie_ctrl_offset;
+ struct phy *phy;
+ int haslink;
+ struct platform_device *pdev;
+ struct resource io;
+ struct resource cfg;
+ struct resource pre_mem; /* prefetchable */
+ struct resource non_mem; /* non-prefetchable */
+ struct resource busn; /* max available bus numbers */
+ int card_reset; /* gpio pin, optional */
+ unsigned hcsl_en; /* hcsl pci enable bit */
+ struct clk *clk;
+ struct clk *busclk; /* for pcie bus, actually the PLLB */
+ void *private_data[1];
+ spinlock_t lock;
+};
+
+static struct oxnas_pcie_shared pcie_shared = {
+ .refcount = 0,
+};
+
+static inline struct oxnas_pcie *sys_to_pcie(struct pci_sys_data *sys)
+{
+ return sys->private_data;
+}
+
+
+static inline void set_out_lanes(struct oxnas_pcie *pcie, unsigned lanes)
+{
+ regmap_update_bits(pcie->sys_ctrl, pcie->outbound_offset + PCIE_AHB_SLAVE_CTRL,
+ PCIE_SLAVE_BE_MASK, PCIE_SLAVE_BE(lanes));
+ wmb();
+}
+
+static int oxnas_pcie_link_up(struct oxnas_pcie *pcie)
+{
+ unsigned long end;
+ unsigned int val;
+
+ /* Poll for PCIE link up */
+ end = jiffies + (LINK_UP_TIMEOUT_SECONDS * HZ);
+ while (!time_after(jiffies, end)) {
+ regmap_read(pcie->sys_ctrl, pcie->pcie_ctrl_offset, &val);
+ if (val & PCIE_LINK_UP)
+ return 1;
+ }
+ return 0;
+}
+
+static void oxnas_pcie_setup_hw(struct oxnas_pcie *pcie)
+{
+ /* We won't have any inbound address translation. This allows PCI
+ * devices to access anywhere in the AHB address map. Might be regarded
+ * as a bit dangerous, but let's get things working before we worry
+ * about that
+ */
+ oxnas_register_clear_mask(pcie->inbound + IB_ADDR_XLATE_ENABLE,
+ ENABLE_IN_ADDR_TRANS);
+ wmb();
+
+ /*
+ * Program outbound translation windows
+ *
+ * Outbound window is what is referred to as "PCI client" region in HRM
+ *
+ * Could use the larger alternative address space to get >>64M regions
+ * for graphics cards etc., but will not bother at this point.
+ *
+ * IP bug means that AMBA window size must be a power of 2
+ *
+ * Set mem0 window for first 16MB of outbound window non-prefetchable
+ * Set mem1 window for second 16MB of outbound window prefetchable
+ * Set io window for next 16MB of outbound window
+ * Set cfg0 for final 1MB of outbound window
+ *
+ * Ignore mem1, cfg1 and msg windows for now as no obvious use cases for
+ * 820 that would need them
+ *
+ * Probably ideally want no offset between mem0 window start as seen by
+ * ARM and as seen on PCI bus and get Linux to assign memory regions to
+ * PCI devices using the same "PCI client" region start address as seen
+ * by ARM
+ */
+
+ /* Set PCIeA mem0 region to be 1st 16MB of the 64MB PCIeA window */
+ regmap_write(pcie->sys_ctrl, pcie->outbound_offset + PCIE_IN0_MEM_ADDR, pcie->non_mem.start);
+ regmap_write(pcie->sys_ctrl, pcie->outbound_offset + PCIE_IN0_MEM_LIMIT, pcie->non_mem.end);
+ regmap_write(pcie->sys_ctrl, pcie->outbound_offset + PCIE_POM0_MEM_ADDR, pcie->non_mem.start);
+
+ /* Set PCIeA mem1 region to be 2nd 16MB of the 64MB PCIeA window */
+ regmap_write(pcie->sys_ctrl, pcie->outbound_offset + PCIE_IN1_MEM_ADDR, pcie->pre_mem.start);
+ regmap_write(pcie->sys_ctrl, pcie->outbound_offset + PCIE_IN1_MEM_LIMIT, pcie->pre_mem.end);
+ regmap_write(pcie->sys_ctrl, pcie->outbound_offset + PCIE_POM1_MEM_ADDR, pcie->pre_mem.start);
+
+ /* Set PCIeA io to be third 16M region of the 64MB PCIeA window*/
+ regmap_write(pcie->sys_ctrl, pcie->outbound_offset + PCIE_IN_IO_ADDR, pcie->io.start);
+ regmap_write(pcie->sys_ctrl, pcie->outbound_offset + PCIE_IN_IO_LIMIT, pcie->io.end);
+
+
+ /* Set PCIeA cgf0 to be last 16M region of the 64MB PCIeA window*/
+ regmap_write(pcie->sys_ctrl, pcie->outbound_offset + PCIE_IN_CFG0_ADDR, pcie->cfg.start);
+ regmap_write(pcie->sys_ctrl, pcie->outbound_offset + PCIE_IN_CFG0_LIMIT, pcie->cfg.end);
+ wmb();
+
+ /* Enable outbound address translation */
+ regmap_write_bits(pcie->sys_ctrl, pcie->pcie_ctrl_offset, PCIE_OBTRANS, PCIE_OBTRANS);
+ wmb();
+
+ /*
+ * Program PCIe command register for core to:
+ * enable memory space
+ * enable bus master
+ * enable io
+ */
+ writel_relaxed(7, pcie->base + PCI_CONFIG_COMMAND_STATUS);
+ /* which is which */
+ wmb();
+}
+
+static unsigned oxnas_pcie_cfg_to_offset(
+ struct pci_sys_data *sys,
+ unsigned char bus_number,
+ unsigned int devfn,
+ int where)
+{
+ unsigned int function = PCI_FUNC(devfn);
+ unsigned int slot = PCI_SLOT(devfn);
+ unsigned char bus_number_offset;
+
+ bus_number_offset = bus_number - sys->busnr;
+
+ /*
+ * We'll assume for now that the offset, function, slot, bus encoding
+ * should map onto linear, contiguous addresses in PCIe config space,
+ * albeit that the majority will be unused as only slot 0 is valid for
+ * any PCIe bus and most devices have only function 0
+ *
+ * Could be that PCIe in fact works by not encoding the slot number into
+ * the config space address as it's known that only slot 0 is valid.
+ * We'll have to experiment if/when we get a PCIe switch connected to
+ * the PCIe host
+ */
+ return (bus_number_offset << 20) | (slot << 15) | (function << 12) |
+ (where & ~3);
+}
+
+/* PCI configuration space write function */
+static int oxnas_pcie_wr_conf(struct pci_bus *bus, u32 devfn,
+ int where, int size, u32 val)
+{
+ unsigned long flags;
+ struct oxnas_pcie *pcie = sys_to_pcie(bus->sysdata);
+ unsigned offset;
+ u32 value;
+ u32 lanes;
+
+ /* Only a single device per bus for PCIe point-to-point links */
+ if (PCI_SLOT(devfn) > 0)
+ return PCIBIOS_DEVICE_NOT_FOUND;
+
+ if (!pcie->haslink)
+ return PCIBIOS_DEVICE_NOT_FOUND;
+
+ offset = oxnas_pcie_cfg_to_offset(bus->sysdata, bus->number, devfn,
+ where);
+
+ value = val << (8 * (where & 3));
+ lanes = (0xf >> (4-size)) << (where & 3);
+ /* it race with mem and io write, but the possibility is low, normally
+ * all config writes happens at driver initialize stage, wont interleave
+ * with others.
+ * and many pcie cards use dword (4bytes) access mem/io access only,
+ * so not bother to copy that ugly work-around now. */
+ spin_lock_irqsave(&pcie->lock, flags);
+ set_out_lanes(pcie, lanes);
+ writel_relaxed(value, pcie->cfgbase + offset);
+ set_out_lanes(pcie, 0xf);
+ spin_unlock_irqrestore(&pcie->lock, flags);
+
+ return PCIBIOS_SUCCESSFUL;
+}
+
+/* PCI configuration space read function */
+static int oxnas_pcie_rd_conf(struct pci_bus *bus, u32 devfn, int where,
+ int size, u32 *val)
+{
+ struct oxnas_pcie *pcie = sys_to_pcie(bus->sysdata);
+ unsigned offset;
+ u32 value;
+ u32 left_bytes, right_bytes;
+
+ /* Only a single device per bus for PCIe point-to-point links */
+ if (PCI_SLOT(devfn) > 0) {
+ *val = 0xffffffff;
+ return PCIBIOS_DEVICE_NOT_FOUND;
+ }
+
+ if (!pcie->haslink) {
+ *val = 0xffffffff;
+ return PCIBIOS_DEVICE_NOT_FOUND;
+ }
+
+ offset = oxnas_pcie_cfg_to_offset(bus->sysdata, bus->number, devfn,
+ where);
+ value = readl_relaxed(pcie->cfgbase + offset);
+ left_bytes = where & 3;
+ right_bytes = 4 - left_bytes - size;
+ value <<= right_bytes * 8;
+ value >>= (left_bytes + right_bytes) * 8;
+ *val = value;
+
+ return PCIBIOS_SUCCESSFUL;
+}
+
+static struct pci_ops oxnas_pcie_ops = {
+ .read = oxnas_pcie_rd_conf,
+ .write = oxnas_pcie_wr_conf,
+};
+
+static int oxnas_pcie_setup(int nr, struct pci_sys_data *sys)
+{
+ struct oxnas_pcie *pcie = sys_to_pcie(sys);
+
+ pci_add_resource_offset(&sys->resources, &pcie->non_mem, sys->mem_offset);
+ pci_add_resource_offset(&sys->resources, &pcie->pre_mem, sys->mem_offset);
+ pci_add_resource_offset(&sys->resources, &pcie->io, sys->io_offset);
+ pci_add_resource(&sys->resources, &pcie->busn);
+ if (sys->busnr == 0) { /* default one */
+ sys->busnr = pcie->busn.start;
+ }
+ /* do not use devm_ioremap_resource, it does not like cfg resource */
+ pcie->cfgbase = devm_ioremap(&pcie->pdev->dev, pcie->cfg.start,
+ resource_size(&pcie->cfg));
+ if (!pcie->cfgbase)
+ return -ENOMEM;
+
+ oxnas_pcie_setup_hw(pcie);
+
+ return 1;
+}
+
+static void oxnas_pcie_enable(struct device *dev, struct oxnas_pcie *pcie)
+{
+ struct hw_pci hw;
+ int i;
+
+ memset(&hw, 0, sizeof(hw));
+ for (i = 0; i < NUM_CONTROLLERS; i++)
+ pcie->private_data[i] = pcie;
+
+ hw.nr_controllers = NUM_CONTROLLERS;
+/* I think use stack pointer is a bad idea though it is valid in this case */
+ hw.private_data = pcie->private_data;
+ hw.setup = oxnas_pcie_setup;
+ hw.map_irq = of_irq_parse_and_map_pci;
+ hw.ops = &oxnas_pcie_ops;
+
+ /* pass dev to maintain of tree, interrupt mapping rely on this */
+ pci_common_init_dev(dev, &hw);
+}
+
+static int oxnas_pcie_shared_init(struct platform_device *pdev, struct oxnas_pcie *pcie)
+{
+ if (++pcie_shared.refcount == 1) {
+ phy_init(pcie->phy);
+ phy_power_on(pcie->phy);
+ return 0;
+ } else {
+ return 0;
+ }
+}
+
+#if 0
+/* maybe we will call it when enter low power state */
+static void oxnas_pcie_shared_deinit(struct platform_device *pdev)
+{
+ if (--pcie_shared.refcount == 0) {
+ /* no cleanup needed */;
+ }
+}
+#endif
+
+static int
+oxnas_pcie_map_registers(struct platform_device *pdev,
+ struct device_node *np,
+ struct oxnas_pcie *pcie)
+{
+ struct resource regs;
+ int ret = 0;
+ u32 outbound_ctrl_offset;
+ u32 pcie_ctrl_offset;
+
+ ret = of_address_to_resource(np, 0, ®s);
+ if (ret) {
+ dev_err(&pdev->dev, "failed to parse base register space\n");
+ return -EINVAL;
+ }
+
+ pcie->base = devm_ioremap_resource(&pdev->dev, ®s);
+ if (!pcie->base) {
+ dev_err(&pdev->dev, "failed to map base register space\n");
+ return -ENOMEM;
+ }
+
+ ret = of_address_to_resource(np, 1, ®s);
+ if (ret) {
+ dev_err(&pdev->dev, "failed to parse inbound register space\n");
+ return -EINVAL;
+ }
+
+ pcie->inbound = devm_ioremap_resource(&pdev->dev, ®s);
+ if (!pcie->inbound) {
+ dev_err(&pdev->dev, "failed to map inbound register space\n");
+ return -ENOMEM;
+ }
+
+ pcie->phy = devm_of_phy_get(&pdev->dev, np, NULL);
+ if (IS_ERR(pcie->phy)) {
+ if (PTR_ERR(pcie->phy) == -EPROBE_DEFER) {
+ dev_err(&pdev->dev, "failed to probe phy\n");
+ return PTR_ERR(pcie->phy);
+ }
+ dev_warn(&pdev->dev, "phy not attached\n");
+ pcie->phy = NULL;
+ }
+
+ if (of_property_read_u32(np, "plxtech,pcie-outbound-offset",
+ &outbound_ctrl_offset)) {
+ dev_err(&pdev->dev, "failed to parse outbound register offset\n");
+ return -EINVAL;
+ }
+ pcie->outbound_offset = outbound_ctrl_offset;
+
+ if (of_property_read_u32(np, "plxtech,pcie-ctrl-offset",
+ &pcie_ctrl_offset)) {
+ dev_err(&pdev->dev, "failed to parse pcie-ctrl register offset\n");
+ return -EINVAL;
+ }
+ pcie->pcie_ctrl_offset = pcie_ctrl_offset;
+
+ return 0;
+}
+
+static int oxnas_pcie_init_res(struct platform_device *pdev,
+ struct oxnas_pcie *pcie,
+ struct device_node *np)
+{
+ struct of_pci_range range;
+ struct of_pci_range_parser parser;
+ int ret;
+
+ if (of_pci_range_parser_init(&parser, np))
+ return -EINVAL;
+
+ /* Get the I/O and memory ranges from DT */
+ for_each_of_pci_range(&parser, &range) {
+
+ unsigned long restype = range.flags & IORESOURCE_TYPE_BITS;
+ if (restype == IORESOURCE_IO) {
+ of_pci_range_to_resource(&range, np, &pcie->io);
+ pcie->io.name = "I/O";
+ }
+ if (restype == IORESOURCE_MEM) {
+ if (range.flags & IORESOURCE_PREFETCH) {
+ of_pci_range_to_resource(&range, np, &pcie->pre_mem);
+ pcie->pre_mem.name = "PRE MEM";
+ } else {
+ of_pci_range_to_resource(&range, np, &pcie->non_mem);
+ pcie->non_mem.name = "NON MEM";
+ }
+
+ }
+ if (restype == 0)
+ of_pci_range_to_resource(&range, np, &pcie->cfg);
+ }
+
+ /* Get the bus range */
+ ret = of_pci_parse_bus_range(np, &pcie->busn);
+
+ if (ret) {
+ dev_err(&pdev->dev, "failed to parse bus-range property: %d\n",
+ ret);
+ return ret;
+ }
+
+ pcie->card_reset = of_get_gpio(np, 0);
+ if (pcie->card_reset < 0)
+ dev_info(&pdev->dev, "card reset gpio pin not exists\n");
+
+ if (of_property_read_u32(np, "plxtech,pcie-hcsl-bit", &pcie->hcsl_en))
+ return -EINVAL;
+
+ pcie->clk = of_clk_get_by_name(np, "pcie");
+ if (IS_ERR(pcie->clk)) {
+ return PTR_ERR(pcie->clk);
+ }
+
+ pcie->busclk = of_clk_get_by_name(np, "busclk");
+ if (IS_ERR(pcie->busclk)) {
+ clk_put(pcie->clk);
+ return PTR_ERR(pcie->busclk);
+ }
+
+ return 0;
+}
+
+static void oxnas_pcie_init_hw(struct platform_device *pdev,
+ struct oxnas_pcie *pcie)
+{
+ u32 version_id;
+ int ret;
+
+ clk_prepare_enable(pcie->busclk);
+
+ /* reset PCIe cards use hard-wired gpio pin */
+ if (pcie->card_reset >= 0 &&
+ !gpio_direction_output(pcie->card_reset, 0)) {
+ wmb();
+ mdelay(10);
+ /* must tri-state the pin to pull it up */
+ gpio_direction_input(pcie->card_reset);
+ wmb();
+ mdelay(100);
+ }
+
+ /* ToDo: use phy power-on port... */
+ regmap_update_bits(pcie->sys_ctrl, SYS_CTRL_HCSL_CTRL_REGOFFSET,
+ BIT(pcie->hcsl_en), BIT(pcie->hcsl_en));
+
+ /* core */
+ ret = device_reset(&pdev->dev);
+ if (ret) {
+ dev_err(&pdev->dev, "core reset failed %d\n", ret);
+ return;
+ }
+
+ /* Start PCIe core clocks */
+ clk_prepare_enable(pcie->clk);
+
+ version_id = readl_relaxed(pcie->base + PCI_CONFIG_VERSION_DEVICEID);
+ dev_info(&pdev->dev, "PCIe version/deviceID 0x%x\n", version_id);
+
+ if (version_id != VERSION_ID_MAGIC) {
+ dev_info(&pdev->dev, "PCIe controller not found\n");
+ pcie->haslink = 0;
+ return;
+ }
+
+ /* allow entry to L23 state */
+ regmap_write_bits(pcie->sys_ctrl, pcie->pcie_ctrl_offset,
+ PCIE_READY_ENTR_L23, PCIE_READY_ENTR_L23);
+
+ /* Set PCIe core into RootCore mode */
+ regmap_write_bits(pcie->sys_ctrl, pcie->pcie_ctrl_offset,
+ PCIE_DEVICE_TYPE_MASK, PCIE_DEVICE_TYPE_ROOT);
+ wmb();
+
+ /* Bring up the PCI core */
+ regmap_write_bits(pcie->sys_ctrl, pcie->pcie_ctrl_offset,
+ PCIE_LTSSM, PCIE_LTSSM);
+ wmb();
+}
+
+static int oxnas_pcie_probe(struct platform_device *pdev)
+{
+ struct oxnas_pcie *pcie;
+ struct device_node *np = pdev->dev.of_node;
+ int ret;
+
+ pcie = devm_kzalloc(&pdev->dev, sizeof(struct oxnas_pcie),
+ GFP_KERNEL);
+ if (!pcie)
+ return -ENOMEM;
+
+ pcie->pdev = pdev;
+ pcie->haslink = 1;
+ spin_lock_init(&pcie->lock);
+
+ pcie->sys_ctrl = syscon_regmap_lookup_by_compatible("oxsemi,ox820-sys-ctrl");
+ if (IS_ERR(pcie->sys_ctrl))
+ return PTR_ERR(pcie->sys_ctrl);
+
+ ret = oxnas_pcie_init_res(pdev, pcie, np);
+ if (ret)
+ return ret;
+ if (pcie->card_reset >= 0) {
+ ret = gpio_request_one(pcie->card_reset, GPIOF_DIR_IN,
+ dev_name(&pdev->dev));
+ if (ret) {
+ dev_err(&pdev->dev, "cannot request gpio pin %d\n",
+ pcie->card_reset);
+ return ret;
+ }
+ }
+
+ ret = oxnas_pcie_map_registers(pdev, np, pcie);
+ if (ret) {
+ dev_err(&pdev->dev, "cannot map registers\n");
+ goto err_free_gpio;
+ }
+
+ ret = oxnas_pcie_shared_init(pdev, pcie);
+ if (ret)
+ goto err_free_gpio;
+
+ /* if hw not found, haslink cleared */
+ oxnas_pcie_init_hw(pdev, pcie);
+
+ if (pcie->haslink && oxnas_pcie_link_up(pcie)) {
+ pcie->haslink = 1;
+ dev_info(&pdev->dev, "link up\n");
+ } else {
+ pcie->haslink = 0;
+ dev_info(&pdev->dev, "link down\n");
+ }
+ /* should we register our controller even when pcie->haslink is 0 ? */
+ /* register the controller with framework */
+ oxnas_pcie_enable(&pdev->dev, pcie);
+
+ return 0;
+
+err_free_gpio:
+ if (pcie->card_reset)
+ gpio_free(pcie->card_reset);
+
+ return ret;
+}
+
+static const struct of_device_id oxnas_pcie_of_match_table[] = {
+ { .compatible = "plxtech,nas782x-pcie", },
+ {},
+};
+
+static struct platform_driver oxnas_pcie_driver = {
+ .driver = {
+ .name = "oxnas-pcie",
+ .suppress_bind_attrs = true,
+ .of_match_table = oxnas_pcie_of_match_table,
+ },
+ .probe = oxnas_pcie_probe,
+};
+
+builtin_platform_driver(oxnas_pcie_driver);
--- /dev/null
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2019 Daniel Golle <daniel@makrotopia.org>
+ *
+ */
+
+#include <dt-bindings/phy/phy.h>
+#include <linux/io.h>
+#include <linux/iopoll.h>
+#include <linux/module.h>
+#include <linux/of_address.h>
+#include <linux/of_device.h>
+#include <linux/mfd/syscon.h>
+#include <linux/phy/phy.h>
+#include <linux/platform_device.h>
+#include <linux/regmap.h>
+#include <linux/reset.h>
+
+#define ADDR_VAL(val) ((val) & 0xFFFF)
+#define DATA_VAL(val) ((val) & 0xFFFF)
+
+#define SYS_CTRL_HCSL_CTRL_REGOFFSET 0x114
+
+enum {
+ HCSL_BIAS_ON = BIT(0),
+ HCSL_PCIE_EN = BIT(1),
+ HCSL_PCIEA_EN = BIT(2),
+ HCSL_PCIEB_EN = BIT(3),
+};
+
+enum {
+ /* pcie phy reg offset */
+ PHY_ADDR = 0,
+ PHY_DATA = 4,
+ /* phy data reg bits */
+ READ_EN = BIT(16),
+ WRITE_EN = BIT(17),
+ CAP_DATA = BIT(18),
+};
+
+struct oxnas_pcie_phy {
+ struct device *dev;
+ void __iomem *membase;
+ const struct phy_ops *ops;
+ struct regmap *sys_ctrl;
+ struct reset_control *rstc;
+};
+
+static int oxnas_pcie_phy_init(struct phy *phy)
+{
+ struct oxnas_pcie_phy *pciephy = phy_get_drvdata(phy);
+ int ret;
+
+ /* generate clocks from HCSL buffers, shared parts */
+ regmap_write(pciephy->sys_ctrl, SYS_CTRL_HCSL_CTRL_REGOFFSET, HCSL_BIAS_ON|HCSL_PCIE_EN);
+
+ /* Ensure PCIe PHY is properly reset */
+ ret = reset_control_reset(pciephy->rstc);
+
+ if (ret) {
+ dev_err(pciephy->dev, "phy reset failed %d\n", ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+static int oxnas_pcie_phy_power_on(struct phy *phy)
+{
+ struct oxnas_pcie_phy *pciephy = phy_get_drvdata(phy);
+
+ /* Enable PCIe Pre-Emphasis: What these value means? */
+ writel(ADDR_VAL(0x0014), pciephy->membase + PHY_ADDR);
+ writel(DATA_VAL(0xce10) | CAP_DATA, pciephy->membase + PHY_DATA);
+ writel(DATA_VAL(0xce10) | WRITE_EN, pciephy->membase + PHY_DATA);
+
+ writel(ADDR_VAL(0x2004), pciephy->membase + PHY_ADDR);
+ writel(DATA_VAL(0x82c7) | CAP_DATA, pciephy->membase + PHY_DATA);
+ writel(DATA_VAL(0x82c7) | WRITE_EN, pciephy->membase + PHY_DATA);
+
+ return 0;
+}
+
+static const struct phy_ops ops = {
+ .init = oxnas_pcie_phy_init,
+ .power_on = oxnas_pcie_phy_power_on,
+ .owner = THIS_MODULE,
+};
+
+static int oxnas_pcie_phy_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct device_node *np = pdev->dev.of_node;
+ struct phy *generic_phy;
+ struct phy_provider *phy_provider;
+ struct oxnas_pcie_phy *pciephy;
+ struct regmap *sys_ctrl;
+ struct reset_control *rstc;
+ void __iomem *membase;
+
+ membase = of_iomap(np, 0);
+ if (IS_ERR(membase))
+ return PTR_ERR(membase);
+
+ sys_ctrl = syscon_regmap_lookup_by_compatible("oxsemi,ox820-sys-ctrl");
+ if (IS_ERR(sys_ctrl))
+ return PTR_ERR(sys_ctrl);
+
+ rstc = devm_reset_control_get_shared(dev, "phy");
+ if (IS_ERR(rstc))
+ return PTR_ERR(rstc);
+
+ pciephy = devm_kzalloc(dev, sizeof(*pciephy), GFP_KERNEL);
+ if (!pciephy)
+ return -ENOMEM;
+
+ pciephy->sys_ctrl = sys_ctrl;
+ pciephy->rstc = rstc;
+ pciephy->membase = membase;
+ pciephy->dev = dev;
+ pciephy->ops = &ops;
+
+ generic_phy = devm_phy_create(dev, dev->of_node, pciephy->ops);
+ if (IS_ERR(generic_phy)) {
+ dev_err(dev, "failed to create PHY\n");
+ return PTR_ERR(generic_phy);
+ }
+
+ phy_set_drvdata(generic_phy, pciephy);
+ phy_provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate);
+
+ return PTR_ERR_OR_ZERO(phy_provider);
+}
+
+static const struct of_device_id oxnas_pcie_phy_id_table[] = {
+ { .compatible = "oxsemi,ox820-pcie-phy" },
+ { },
+};
+
+static struct platform_driver oxnas_pcie_phy_driver = {
+ .probe = oxnas_pcie_phy_probe,
+ .driver = {
+ .name = "ox820-pcie-phy",
+ .of_match_table = oxnas_pcie_phy_id_table,
+ },
+};
+
+builtin_platform_driver(oxnas_pcie_phy_driver);
#include "ox820.dtsi"
+#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/input/input.h>
/ {
i2c-gpio {
compatible = "i2c-gpio";
- gpios = <&gpio1 9 0 &gpio1 10 0>;
+ sda-gpios = <&gpio1 9 (GPIO_ACTIVE_HIGH|GPIO_LINE_OPEN_DRAIN)>;
+ sck-gpios = <&gpio1 10 (GPIO_ACTIVE_HIGH|GPIO_LINE_OPEN_DRAIN)>;
i2c-gpio,delay-us = <10>;
#address-cells = <1>;
#size-cells = <0>;
power {
label = "power";
- gpios = <&gpio0 10 1>;
+ gpios = <&gpio0 10 GPIO_ACTIVE_LOW>;
linux,code = <KEY_POWER>;
};
reset {
label = "reset";
- gpios = <&gpio0 11 1>;
+ gpios = <&gpio0 11 GPIO_ACTIVE_LOW>;
linux,code = <KEY_RESTART>;
};
eject1 {
label = "eject1";
- gpios = <&gpio0 5 1>;
+ gpios = <&gpio0 5 GPIO_ACTIVE_LOW>;
linux,code = <KEY_EJECTCD>;
};
eject2 {
label = "eject2";
- gpios = <&gpio0 6 1>;
+ gpios = <&gpio0 6 GPIO_ACTIVE_LOW>;
linux,code = <162>;
};
};
compatible = "gpio-leds";
led_status: status {
label = "kd20:blue:status";
- gpios = <&gpio1 16 0>;
+ gpios = <&gpio1 16 GPIO_ACTIVE_HIGH>;
};
led_warn: status2 {
label = "kd20:red:status";
- gpios = <&gpio1 17 0>;
+ gpios = <&gpio1 17 GPIO_ACTIVE_HIGH>;
};
hdd1blue {
label = "kd20:blue:hdd1";
- gpios = <&gpio0 27 0>;
+ gpios = <&gpio0 27 GPIO_ACTIVE_HIGH>;
linux,default-trigger = "ata1";
};
hdd1red {
label = "kd20:red:hdd1";
- gpios = <&gpio1 4 0>;
+ gpios = <&gpio1 4 GPIO_ACTIVE_HIGH>;
};
hdd2blue {
label = "kd20:blue:hdd2";
- gpios = <&gpio1 6 0>;
+ gpios = <&gpio1 6 GPIO_ACTIVE_HIGH>;
linux,default-trigger = "ata2";
};
hdd2red {
label = "kd20:red:hdd2";
- gpios = <&gpio1 7 0>;
+ gpios = <&gpio1 7 GPIO_ACTIVE_HIGH>;
};
usb {
label = "kd20:blue:usb";
- gpios = <&gpio1 8 0>;
+ gpios = <&gpio1 8 GPIO_ACTIVE_HIGH>;
trigger-sources = <&ehci_port1>, <&ehci_port2>;
linux,default-trigger = "usbport";
};
beeper: beeper {
compatible = "gpio-beeper";
- gpios = <&gpio1 11 0>;
+ gpios = <&gpio1 11 GPIO_ACTIVE_HIGH>;
};
gpio-fan {
compatible = "gpio-fan";
- gpios = <&gpio0 2 1>;
+ gpios = <&gpio0 2 GPIO_ACTIVE_LOW>;
gpio-fan,speed-map = <0 0
3000 1>;
};
gpio-poweroff {
compatible = "gpio-poweroff";
- gpios = <&gpio0 9 0>;
+ gpios = <&gpio0 9 GPIO_ACTIVE_HIGH>;
};
};
+++ /dev/null
-/*
- * PCIe driver for PLX NAS782X SoCs
- *
- * Author: Ma Haijun <mahaijuns@gmail.com>
- *
- * This file is licensed under the terms of the GNU General Public
- * License version 2. This program is licensed "as is" without any
- * warranty of any kind, whether express or implied.
- */
-
-#include <linux/kernel.h>
-#include <linux/pci.h>
-#include <linux/clk.h>
-#include <linux/module.h>
-#include <linux/mbus.h>
-#include <linux/mfd/syscon.h>
-#include <linux/slab.h>
-#include <linux/platform_device.h>
-#include <linux/of_address.h>
-#include <linux/of_device.h>
-#include <linux/of_gpio.h>
-#include <linux/of_irq.h>
-#include <linux/of_pci.h>
-#include <linux/of_platform.h>
-#include <linux/gpio.h>
-#include <linux/delay.h>
-#include <linux/clk.h>
-#include <linux/phy.h>
-#include <linux/phy/phy.h>
-#include <linux/regmap.h>
-#include <linux/reset.h>
-#include <linux/io.h>
-#include <linux/sizes.h>
-
-#define SYS_CTRL_HCSL_CTRL_REGOFFSET 0x114
-
-static inline void oxnas_register_clear_mask(void __iomem *p, unsigned mask)
-{
- u32 val = readl_relaxed(p);
-
- val &= ~mask;
- writel_relaxed(val, p);
-}
-
-static inline void oxnas_register_set_mask(void __iomem *p, unsigned mask)
-{
- u32 val = readl_relaxed(p);
-
- val |= mask;
- writel_relaxed(val, p);
-}
-
-static inline void oxnas_register_value_mask(void __iomem *p,
- unsigned mask, unsigned new_value)
-{
- /* TODO sanity check mask & new_value = new_value */
- u32 val = readl_relaxed(p);
-
- val &= ~mask;
- val |= new_value;
- writel_relaxed(val, p);
-}
-
-#define VERSION_ID_MAGIC 0x082510b5
-#define LINK_UP_TIMEOUT_SECONDS 1
-#define NUM_CONTROLLERS 1
-
-enum {
- PCIE_DEVICE_TYPE_MASK = 0x0F,
- PCIE_DEVICE_TYPE_ENDPOINT = 0,
- PCIE_DEVICE_TYPE_LEGACY_ENDPOINT = 1,
- PCIE_DEVICE_TYPE_ROOT = 4,
-
- PCIE_LTSSM = BIT(4),
- PCIE_READY_ENTR_L23 = BIT(9),
- PCIE_LINK_UP = BIT(11),
- PCIE_OBTRANS = BIT(12),
-};
-
-/* core config registers */
-enum {
- PCI_CONFIG_VERSION_DEVICEID = 0,
- PCI_CONFIG_COMMAND_STATUS = 4,
-};
-
-/* inbound config registers */
-enum {
- IB_ADDR_XLATE_ENABLE = 0xFC,
-
- /* bits */
- ENABLE_IN_ADDR_TRANS = BIT(0),
-};
-
-/* outbound config registers, offset relative to PCIE_POM0_MEM_ADDR */
-enum {
- PCIE_POM0_MEM_ADDR = 0,
- PCIE_POM1_MEM_ADDR = 4,
- PCIE_IN0_MEM_ADDR = 8,
- PCIE_IN1_MEM_ADDR = 12,
- PCIE_IN_IO_ADDR = 16,
- PCIE_IN_CFG0_ADDR = 20,
- PCIE_IN_CFG1_ADDR = 24,
- PCIE_IN_MSG_ADDR = 28,
- PCIE_IN0_MEM_LIMIT = 32,
- PCIE_IN1_MEM_LIMIT = 36,
- PCIE_IN_IO_LIMIT = 40,
- PCIE_IN_CFG0_LIMIT = 44,
- PCIE_IN_CFG1_LIMIT = 48,
- PCIE_IN_MSG_LIMIT = 52,
- PCIE_AHB_SLAVE_CTRL = 56,
-
- PCIE_SLAVE_BE_SHIFT = 22,
-};
-
-#define PCIE_SLAVE_BE(val) ((val) << PCIE_SLAVE_BE_SHIFT)
-#define PCIE_SLAVE_BE_MASK PCIE_SLAVE_BE(0xF)
-
-struct oxnas_pcie_shared {
- /* seems all access are serialized, no lock required */
- int refcount;
-};
-
-/* Structure representing one PCIe interfaces */
-struct oxnas_pcie {
- void __iomem *cfgbase;
- void __iomem *base;
- void __iomem *inbound;
- struct regmap *sys_ctrl;
- unsigned int outbound_offset;
- unsigned int pcie_ctrl_offset;
- struct phy *phy;
- int haslink;
- struct platform_device *pdev;
- struct resource io;
- struct resource cfg;
- struct resource pre_mem; /* prefetchable */
- struct resource non_mem; /* non-prefetchable */
- struct resource busn; /* max available bus numbers */
- int card_reset; /* gpio pin, optional */
- unsigned hcsl_en; /* hcsl pci enable bit */
- struct clk *clk;
- struct clk *busclk; /* for pcie bus, actually the PLLB */
- void *private_data[1];
- spinlock_t lock;
-};
-
-static struct oxnas_pcie_shared pcie_shared = {
- .refcount = 0,
-};
-
-static inline struct oxnas_pcie *sys_to_pcie(struct pci_sys_data *sys)
-{
- return sys->private_data;
-}
-
-
-static inline void set_out_lanes(struct oxnas_pcie *pcie, unsigned lanes)
-{
- regmap_update_bits(pcie->sys_ctrl, pcie->outbound_offset + PCIE_AHB_SLAVE_CTRL,
- PCIE_SLAVE_BE_MASK, PCIE_SLAVE_BE(lanes));
- wmb();
-}
-
-static int oxnas_pcie_link_up(struct oxnas_pcie *pcie)
-{
- unsigned long end;
- unsigned int val;
-
- /* Poll for PCIE link up */
- end = jiffies + (LINK_UP_TIMEOUT_SECONDS * HZ);
- while (!time_after(jiffies, end)) {
- regmap_read(pcie->sys_ctrl, pcie->pcie_ctrl_offset, &val);
- if (val & PCIE_LINK_UP)
- return 1;
- }
- return 0;
-}
-
-static void oxnas_pcie_setup_hw(struct oxnas_pcie *pcie)
-{
- /* We won't have any inbound address translation. This allows PCI
- * devices to access anywhere in the AHB address map. Might be regarded
- * as a bit dangerous, but let's get things working before we worry
- * about that
- */
- oxnas_register_clear_mask(pcie->inbound + IB_ADDR_XLATE_ENABLE,
- ENABLE_IN_ADDR_TRANS);
- wmb();
-
- /*
- * Program outbound translation windows
- *
- * Outbound window is what is referred to as "PCI client" region in HRM
- *
- * Could use the larger alternative address space to get >>64M regions
- * for graphics cards etc., but will not bother at this point.
- *
- * IP bug means that AMBA window size must be a power of 2
- *
- * Set mem0 window for first 16MB of outbound window non-prefetchable
- * Set mem1 window for second 16MB of outbound window prefetchable
- * Set io window for next 16MB of outbound window
- * Set cfg0 for final 1MB of outbound window
- *
- * Ignore mem1, cfg1 and msg windows for now as no obvious use cases for
- * 820 that would need them
- *
- * Probably ideally want no offset between mem0 window start as seen by
- * ARM and as seen on PCI bus and get Linux to assign memory regions to
- * PCI devices using the same "PCI client" region start address as seen
- * by ARM
- */
-
- /* Set PCIeA mem0 region to be 1st 16MB of the 64MB PCIeA window */
- regmap_write(pcie->sys_ctrl, pcie->outbound_offset + PCIE_IN0_MEM_ADDR, pcie->non_mem.start);
- regmap_write(pcie->sys_ctrl, pcie->outbound_offset + PCIE_IN0_MEM_LIMIT, pcie->non_mem.end);
- regmap_write(pcie->sys_ctrl, pcie->outbound_offset + PCIE_POM0_MEM_ADDR, pcie->non_mem.start);
-
- /* Set PCIeA mem1 region to be 2nd 16MB of the 64MB PCIeA window */
- regmap_write(pcie->sys_ctrl, pcie->outbound_offset + PCIE_IN1_MEM_ADDR, pcie->pre_mem.start);
- regmap_write(pcie->sys_ctrl, pcie->outbound_offset + PCIE_IN1_MEM_LIMIT, pcie->pre_mem.end);
- regmap_write(pcie->sys_ctrl, pcie->outbound_offset + PCIE_POM1_MEM_ADDR, pcie->pre_mem.start);
-
- /* Set PCIeA io to be third 16M region of the 64MB PCIeA window*/
- regmap_write(pcie->sys_ctrl, pcie->outbound_offset + PCIE_IN_IO_ADDR, pcie->io.start);
- regmap_write(pcie->sys_ctrl, pcie->outbound_offset + PCIE_IN_IO_LIMIT, pcie->io.end);
-
-
- /* Set PCIeA cgf0 to be last 16M region of the 64MB PCIeA window*/
- regmap_write(pcie->sys_ctrl, pcie->outbound_offset + PCIE_IN_CFG0_ADDR, pcie->cfg.start);
- regmap_write(pcie->sys_ctrl, pcie->outbound_offset + PCIE_IN_CFG0_LIMIT, pcie->cfg.end);
- wmb();
-
- /* Enable outbound address translation */
- regmap_write_bits(pcie->sys_ctrl, pcie->pcie_ctrl_offset, PCIE_OBTRANS, PCIE_OBTRANS);
- wmb();
-
- /*
- * Program PCIe command register for core to:
- * enable memory space
- * enable bus master
- * enable io
- */
- writel_relaxed(7, pcie->base + PCI_CONFIG_COMMAND_STATUS);
- /* which is which */
- wmb();
-}
-
-static unsigned oxnas_pcie_cfg_to_offset(
- struct pci_sys_data *sys,
- unsigned char bus_number,
- unsigned int devfn,
- int where)
-{
- unsigned int function = PCI_FUNC(devfn);
- unsigned int slot = PCI_SLOT(devfn);
- unsigned char bus_number_offset;
-
- bus_number_offset = bus_number - sys->busnr;
-
- /*
- * We'll assume for now that the offset, function, slot, bus encoding
- * should map onto linear, contiguous addresses in PCIe config space,
- * albeit that the majority will be unused as only slot 0 is valid for
- * any PCIe bus and most devices have only function 0
- *
- * Could be that PCIe in fact works by not encoding the slot number into
- * the config space address as it's known that only slot 0 is valid.
- * We'll have to experiment if/when we get a PCIe switch connected to
- * the PCIe host
- */
- return (bus_number_offset << 20) | (slot << 15) | (function << 12) |
- (where & ~3);
-}
-
-/* PCI configuration space write function */
-static int oxnas_pcie_wr_conf(struct pci_bus *bus, u32 devfn,
- int where, int size, u32 val)
-{
- unsigned long flags;
- struct oxnas_pcie *pcie = sys_to_pcie(bus->sysdata);
- unsigned offset;
- u32 value;
- u32 lanes;
-
- /* Only a single device per bus for PCIe point-to-point links */
- if (PCI_SLOT(devfn) > 0)
- return PCIBIOS_DEVICE_NOT_FOUND;
-
- if (!pcie->haslink)
- return PCIBIOS_DEVICE_NOT_FOUND;
-
- offset = oxnas_pcie_cfg_to_offset(bus->sysdata, bus->number, devfn,
- where);
-
- value = val << (8 * (where & 3));
- lanes = (0xf >> (4-size)) << (where & 3);
- /* it race with mem and io write, but the possibility is low, normally
- * all config writes happens at driver initialize stage, wont interleave
- * with others.
- * and many pcie cards use dword (4bytes) access mem/io access only,
- * so not bother to copy that ugly work-around now. */
- spin_lock_irqsave(&pcie->lock, flags);
- set_out_lanes(pcie, lanes);
- writel_relaxed(value, pcie->cfgbase + offset);
- set_out_lanes(pcie, 0xf);
- spin_unlock_irqrestore(&pcie->lock, flags);
-
- return PCIBIOS_SUCCESSFUL;
-}
-
-/* PCI configuration space read function */
-static int oxnas_pcie_rd_conf(struct pci_bus *bus, u32 devfn, int where,
- int size, u32 *val)
-{
- struct oxnas_pcie *pcie = sys_to_pcie(bus->sysdata);
- unsigned offset;
- u32 value;
- u32 left_bytes, right_bytes;
-
- /* Only a single device per bus for PCIe point-to-point links */
- if (PCI_SLOT(devfn) > 0) {
- *val = 0xffffffff;
- return PCIBIOS_DEVICE_NOT_FOUND;
- }
-
- if (!pcie->haslink) {
- *val = 0xffffffff;
- return PCIBIOS_DEVICE_NOT_FOUND;
- }
-
- offset = oxnas_pcie_cfg_to_offset(bus->sysdata, bus->number, devfn,
- where);
- value = readl_relaxed(pcie->cfgbase + offset);
- left_bytes = where & 3;
- right_bytes = 4 - left_bytes - size;
- value <<= right_bytes * 8;
- value >>= (left_bytes + right_bytes) * 8;
- *val = value;
-
- return PCIBIOS_SUCCESSFUL;
-}
-
-static struct pci_ops oxnas_pcie_ops = {
- .read = oxnas_pcie_rd_conf,
- .write = oxnas_pcie_wr_conf,
-};
-
-static int oxnas_pcie_setup(int nr, struct pci_sys_data *sys)
-{
- struct oxnas_pcie *pcie = sys_to_pcie(sys);
-
- pci_add_resource_offset(&sys->resources, &pcie->non_mem, sys->mem_offset);
- pci_add_resource_offset(&sys->resources, &pcie->pre_mem, sys->mem_offset);
- pci_add_resource_offset(&sys->resources, &pcie->io, sys->io_offset);
- pci_add_resource(&sys->resources, &pcie->busn);
- if (sys->busnr == 0) { /* default one */
- sys->busnr = pcie->busn.start;
- }
- /* do not use devm_ioremap_resource, it does not like cfg resource */
- pcie->cfgbase = devm_ioremap(&pcie->pdev->dev, pcie->cfg.start,
- resource_size(&pcie->cfg));
- if (!pcie->cfgbase)
- return -ENOMEM;
-
- oxnas_pcie_setup_hw(pcie);
-
- return 1;
-}
-
-static void oxnas_pcie_enable(struct device *dev, struct oxnas_pcie *pcie)
-{
- struct hw_pci hw;
- int i;
-
- memset(&hw, 0, sizeof(hw));
- for (i = 0; i < NUM_CONTROLLERS; i++)
- pcie->private_data[i] = pcie;
-
- hw.nr_controllers = NUM_CONTROLLERS;
-/* I think use stack pointer is a bad idea though it is valid in this case */
- hw.private_data = pcie->private_data;
- hw.setup = oxnas_pcie_setup;
- hw.map_irq = of_irq_parse_and_map_pci;
- hw.ops = &oxnas_pcie_ops;
-
- /* pass dev to maintain of tree, interrupt mapping rely on this */
- pci_common_init_dev(dev, &hw);
-}
-
-static int oxnas_pcie_shared_init(struct platform_device *pdev, struct oxnas_pcie *pcie)
-{
- if (++pcie_shared.refcount == 1) {
- phy_init(pcie->phy);
- phy_power_on(pcie->phy);
- return 0;
- } else {
- return 0;
- }
-}
-
-#if 0
-/* maybe we will call it when enter low power state */
-static void oxnas_pcie_shared_deinit(struct platform_device *pdev)
-{
- if (--pcie_shared.refcount == 0) {
- /* no cleanup needed */;
- }
-}
-#endif
-
-static int
-oxnas_pcie_map_registers(struct platform_device *pdev,
- struct device_node *np,
- struct oxnas_pcie *pcie)
-{
- struct resource regs;
- int ret = 0;
- u32 outbound_ctrl_offset;
- u32 pcie_ctrl_offset;
-
- ret = of_address_to_resource(np, 0, ®s);
- if (ret) {
- dev_err(&pdev->dev, "failed to parse base register space\n");
- return -EINVAL;
- }
-
- pcie->base = devm_ioremap_resource(&pdev->dev, ®s);
- if (!pcie->base) {
- dev_err(&pdev->dev, "failed to map base register space\n");
- return -ENOMEM;
- }
-
- ret = of_address_to_resource(np, 1, ®s);
- if (ret) {
- dev_err(&pdev->dev, "failed to parse inbound register space\n");
- return -EINVAL;
- }
-
- pcie->inbound = devm_ioremap_resource(&pdev->dev, ®s);
- if (!pcie->inbound) {
- dev_err(&pdev->dev, "failed to map inbound register space\n");
- return -ENOMEM;
- }
-
- pcie->phy = devm_of_phy_get(&pdev->dev, np, NULL);
- if (IS_ERR(pcie->phy)) {
- if (PTR_ERR(pcie->phy) == -EPROBE_DEFER) {
- dev_err(&pdev->dev, "failed to probe phy\n");
- return PTR_ERR(pcie->phy);
- }
- dev_warn(&pdev->dev, "phy not attached\n");
- pcie->phy = NULL;
- }
-
- if (of_property_read_u32(np, "plxtech,pcie-outbound-offset",
- &outbound_ctrl_offset)) {
- dev_err(&pdev->dev, "failed to parse outbound register offset\n");
- return -EINVAL;
- }
- pcie->outbound_offset = outbound_ctrl_offset;
-
- if (of_property_read_u32(np, "plxtech,pcie-ctrl-offset",
- &pcie_ctrl_offset)) {
- dev_err(&pdev->dev, "failed to parse pcie-ctrl register offset\n");
- return -EINVAL;
- }
- pcie->pcie_ctrl_offset = pcie_ctrl_offset;
-
- return 0;
-}
-
-static int oxnas_pcie_init_res(struct platform_device *pdev,
- struct oxnas_pcie *pcie,
- struct device_node *np)
-{
- struct of_pci_range range;
- struct of_pci_range_parser parser;
- int ret;
-
- if (of_pci_range_parser_init(&parser, np))
- return -EINVAL;
-
- /* Get the I/O and memory ranges from DT */
- for_each_of_pci_range(&parser, &range) {
-
- unsigned long restype = range.flags & IORESOURCE_TYPE_BITS;
- if (restype == IORESOURCE_IO) {
- of_pci_range_to_resource(&range, np, &pcie->io);
- pcie->io.name = "I/O";
- }
- if (restype == IORESOURCE_MEM) {
- if (range.flags & IORESOURCE_PREFETCH) {
- of_pci_range_to_resource(&range, np, &pcie->pre_mem);
- pcie->pre_mem.name = "PRE MEM";
- } else {
- of_pci_range_to_resource(&range, np, &pcie->non_mem);
- pcie->non_mem.name = "NON MEM";
- }
-
- }
- if (restype == 0)
- of_pci_range_to_resource(&range, np, &pcie->cfg);
- }
-
- /* Get the bus range */
- ret = of_pci_parse_bus_range(np, &pcie->busn);
-
- if (ret) {
- dev_err(&pdev->dev, "failed to parse bus-range property: %d\n",
- ret);
- return ret;
- }
-
- pcie->card_reset = of_get_gpio(np, 0);
- if (pcie->card_reset < 0)
- dev_info(&pdev->dev, "card reset gpio pin not exists\n");
-
- if (of_property_read_u32(np, "plxtech,pcie-hcsl-bit", &pcie->hcsl_en))
- return -EINVAL;
-
- pcie->clk = of_clk_get_by_name(np, "pcie");
- if (IS_ERR(pcie->clk)) {
- return PTR_ERR(pcie->clk);
- }
-
- pcie->busclk = of_clk_get_by_name(np, "busclk");
- if (IS_ERR(pcie->busclk)) {
- clk_put(pcie->clk);
- return PTR_ERR(pcie->busclk);
- }
-
- return 0;
-}
-
-static void oxnas_pcie_init_hw(struct platform_device *pdev,
- struct oxnas_pcie *pcie)
-{
- u32 version_id;
- int ret;
-
- clk_prepare_enable(pcie->busclk);
-
- /* reset PCIe cards use hard-wired gpio pin */
- if (pcie->card_reset >= 0 &&
- !gpio_direction_output(pcie->card_reset, 0)) {
- wmb();
- mdelay(10);
- /* must tri-state the pin to pull it up */
- gpio_direction_input(pcie->card_reset);
- wmb();
- mdelay(100);
- }
-
- /* ToDo: use phy power-on port... */
- regmap_update_bits(pcie->sys_ctrl, SYS_CTRL_HCSL_CTRL_REGOFFSET,
- BIT(pcie->hcsl_en), BIT(pcie->hcsl_en));
-
- /* core */
- ret = device_reset(&pdev->dev);
- if (ret) {
- dev_err(&pdev->dev, "core reset failed %d\n", ret);
- return;
- }
-
- /* Start PCIe core clocks */
- clk_prepare_enable(pcie->clk);
-
- version_id = readl_relaxed(pcie->base + PCI_CONFIG_VERSION_DEVICEID);
- dev_info(&pdev->dev, "PCIe version/deviceID 0x%x\n", version_id);
-
- if (version_id != VERSION_ID_MAGIC) {
- dev_info(&pdev->dev, "PCIe controller not found\n");
- pcie->haslink = 0;
- return;
- }
-
- /* allow entry to L23 state */
- regmap_write_bits(pcie->sys_ctrl, pcie->pcie_ctrl_offset,
- PCIE_READY_ENTR_L23, PCIE_READY_ENTR_L23);
-
- /* Set PCIe core into RootCore mode */
- regmap_write_bits(pcie->sys_ctrl, pcie->pcie_ctrl_offset,
- PCIE_DEVICE_TYPE_MASK, PCIE_DEVICE_TYPE_ROOT);
- wmb();
-
- /* Bring up the PCI core */
- regmap_write_bits(pcie->sys_ctrl, pcie->pcie_ctrl_offset,
- PCIE_LTSSM, PCIE_LTSSM);
- wmb();
-}
-
-static int oxnas_pcie_probe(struct platform_device *pdev)
-{
- struct oxnas_pcie *pcie;
- struct device_node *np = pdev->dev.of_node;
- int ret;
-
- pcie = devm_kzalloc(&pdev->dev, sizeof(struct oxnas_pcie),
- GFP_KERNEL);
- if (!pcie)
- return -ENOMEM;
-
- pcie->pdev = pdev;
- pcie->haslink = 1;
- spin_lock_init(&pcie->lock);
-
- pcie->sys_ctrl = syscon_regmap_lookup_by_compatible("oxsemi,ox820-sys-ctrl");
- if (IS_ERR(pcie->sys_ctrl))
- return PTR_ERR(pcie->sys_ctrl);
-
- ret = oxnas_pcie_init_res(pdev, pcie, np);
- if (ret)
- return ret;
- if (pcie->card_reset >= 0) {
- ret = gpio_request_one(pcie->card_reset, GPIOF_DIR_IN,
- dev_name(&pdev->dev));
- if (ret) {
- dev_err(&pdev->dev, "cannot request gpio pin %d\n",
- pcie->card_reset);
- return ret;
- }
- }
-
- ret = oxnas_pcie_map_registers(pdev, np, pcie);
- if (ret) {
- dev_err(&pdev->dev, "cannot map registers\n");
- goto err_free_gpio;
- }
-
- ret = oxnas_pcie_shared_init(pdev, pcie);
- if (ret)
- goto err_free_gpio;
-
- /* if hw not found, haslink cleared */
- oxnas_pcie_init_hw(pdev, pcie);
-
- if (pcie->haslink && oxnas_pcie_link_up(pcie)) {
- pcie->haslink = 1;
- dev_info(&pdev->dev, "link up\n");
- } else {
- pcie->haslink = 0;
- dev_info(&pdev->dev, "link down\n");
- }
- /* should we register our controller even when pcie->haslink is 0 ? */
- /* register the controller with framework */
- oxnas_pcie_enable(&pdev->dev, pcie);
-
- return 0;
-
-err_free_gpio:
- if (pcie->card_reset)
- gpio_free(pcie->card_reset);
-
- return ret;
-}
-
-static const struct of_device_id oxnas_pcie_of_match_table[] = {
- { .compatible = "plxtech,nas782x-pcie", },
- {},
-};
-
-static struct platform_driver oxnas_pcie_driver = {
- .driver = {
- .name = "oxnas-pcie",
- .suppress_bind_attrs = true,
- .of_match_table = oxnas_pcie_of_match_table,
- },
- .probe = oxnas_pcie_probe,
-};
-
-builtin_platform_driver(oxnas_pcie_driver);
+++ /dev/null
-// SPDX-License-Identifier: GPL-2.0
-/*
- * Copyright (c) 2019 Daniel Golle <daniel@makrotopia.org>
- *
- */
-
-#include <dt-bindings/phy/phy.h>
-#include <linux/io.h>
-#include <linux/iopoll.h>
-#include <linux/module.h>
-#include <linux/of_address.h>
-#include <linux/of_device.h>
-#include <linux/mfd/syscon.h>
-#include <linux/phy/phy.h>
-#include <linux/platform_device.h>
-#include <linux/regmap.h>
-#include <linux/reset.h>
-
-#define ADDR_VAL(val) ((val) & 0xFFFF)
-#define DATA_VAL(val) ((val) & 0xFFFF)
-
-#define SYS_CTRL_HCSL_CTRL_REGOFFSET 0x114
-
-enum {
- HCSL_BIAS_ON = BIT(0),
- HCSL_PCIE_EN = BIT(1),
- HCSL_PCIEA_EN = BIT(2),
- HCSL_PCIEB_EN = BIT(3),
-};
-
-enum {
- /* pcie phy reg offset */
- PHY_ADDR = 0,
- PHY_DATA = 4,
- /* phy data reg bits */
- READ_EN = BIT(16),
- WRITE_EN = BIT(17),
- CAP_DATA = BIT(18),
-};
-
-struct oxnas_pcie_phy {
- struct device *dev;
- void __iomem *membase;
- const struct phy_ops *ops;
- struct regmap *sys_ctrl;
-};
-
-static int oxnas_pcie_phy_init(struct phy *phy)
-{
- struct oxnas_pcie_phy *pciephy = phy_get_drvdata(phy);
- struct reset_control *rstc;
- int ret;
-
- /* generate clocks from HCSL buffers, shared parts */
- regmap_write(pciephy->sys_ctrl, SYS_CTRL_HCSL_CTRL_REGOFFSET, HCSL_BIAS_ON|HCSL_PCIE_EN);
-
- /* Ensure PCIe PHY is properly reset */
- rstc = reset_control_get(pciephy->dev, "phy");
- if (IS_ERR(rstc)) {
- ret = PTR_ERR(rstc);
- } else {
- ret = reset_control_reset(rstc);
- reset_control_put(rstc);
- }
-
- if (ret) {
- dev_err(pciephy->dev, "phy reset failed %d\n", ret);
- return ret;
- }
-
- return 0;
-}
-
-static int oxnas_pcie_phy_power_on(struct phy *phy)
-{
- struct oxnas_pcie_phy *pciephy = phy_get_drvdata(phy);
-
- /* Enable PCIe Pre-Emphasis: What these value means? */
- writel(ADDR_VAL(0x0014), pciephy->membase + PHY_ADDR);
- writel(DATA_VAL(0xce10) | CAP_DATA, pciephy->membase + PHY_DATA);
- writel(DATA_VAL(0xce10) | WRITE_EN, pciephy->membase + PHY_DATA);
-
- writel(ADDR_VAL(0x2004), pciephy->membase + PHY_ADDR);
- writel(DATA_VAL(0x82c7) | CAP_DATA, pciephy->membase + PHY_DATA);
- writel(DATA_VAL(0x82c7) | WRITE_EN, pciephy->membase + PHY_DATA);
-
- return 0;
-}
-
-static const struct phy_ops ops = {
- .init = oxnas_pcie_phy_init,
- .power_on = oxnas_pcie_phy_power_on,
- .owner = THIS_MODULE,
-};
-
-static int oxnas_pcie_phy_probe(struct platform_device *pdev)
-{
- struct device *dev = &pdev->dev;
- struct device_node *np = pdev->dev.of_node;
- struct phy *generic_phy;
- struct phy_provider *phy_provider;
- struct oxnas_pcie_phy *pciephy;
- struct regmap *sys_ctrl;
- void __iomem *membase;
-
- membase = of_iomap(np, 0);
- if (IS_ERR(membase))
- return PTR_ERR(membase);
-
- sys_ctrl = syscon_regmap_lookup_by_compatible("oxsemi,ox820-sys-ctrl");
- if (IS_ERR(sys_ctrl)) {
- dev_err(dev, "Cannot find OX820 SYSCRTL\n");
- return PTR_ERR(sys_ctrl);
- }
-
- pciephy = devm_kzalloc(dev, sizeof(*pciephy), GFP_KERNEL);
- if (!pciephy)
- return -ENOMEM;
-
- pciephy->sys_ctrl = sys_ctrl;
- pciephy->membase = membase;
- pciephy->dev = dev;
- pciephy->ops = &ops;
-
- generic_phy = devm_phy_create(dev, dev->of_node, pciephy->ops);
- if (IS_ERR(generic_phy)) {
- dev_err(dev, "failed to create PHY\n");
- return PTR_ERR(generic_phy);
- }
-
- phy_set_drvdata(generic_phy, pciephy);
- phy_provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate);
-
- return PTR_ERR_OR_ZERO(phy_provider);
-}
-
-static const struct of_device_id oxnas_pcie_phy_id_table[] = {
- { .compatible = "oxsemi,ox820-pcie-phy" },
- { },
-};
-
-static struct platform_driver oxnas_pcie_phy_driver = {
- .probe = oxnas_pcie_phy_probe,
- .driver = {
- .name = "ox820-pcie-phy",
- .of_match_table = oxnas_pcie_phy_id_table,
- },
-};
-
-builtin_platform_driver(oxnas_pcie_phy_driver);
# CONFIG_MTD_CFI is not set
CONFIG_MTD_CMDLINE_PARTS=y
# CONFIG_MTD_COMPLEX_MAPPINGS is not set
+CONFIG_MTD_RAW_NAND=y
CONFIG_MTD_NAND=y
CONFIG_MTD_NAND_ECC=y
CONFIG_MTD_NAND_OXNAS=y
---- a/drivers/pci/host/Kconfig
-+++ b/drivers/pci/host/Kconfig
+--- a/drivers/pci/controller/Kconfig
++++ b/drivers/pci/controller/Kconfig
@@ -220,4 +220,9 @@ config VMD
To compile this driver as a module, choose M here: the
module will be called vmd.
+ select PCIEPORTBUS
+
endmenu
---- a/drivers/pci/host/Makefile
-+++ b/drivers/pci/host/Makefile
+--- a/drivers/pci/controller/Makefile
++++ b/drivers/pci/controller/Makefile
@@ -20,6 +20,7 @@ obj-$(CONFIG_PCIE_ALTERA) += pcie-altera
obj-$(CONFIG_PCIE_ALTERA_MSI) += pcie-altera-msi.o
obj-$(CONFIG_PCIE_ROCKCHIP) += pcie-rockchip.o
--- /dev/null
+--- a/arch/arm/boot/dts/ox820-cloudengines-pogoplug-series-3.dts
++++ b/arch/arm/boot/dts/ox820-cloudengines-pogoplug-series-3.dts
+@@ -14,7 +14,7 @@
+ compatible = "cloudengines,pogoplugv3", "oxsemi,ox820";
+
+ chosen {
+- bootargs = "earlyprintk";
++ bootargs = "earlyprintk console=ttyS0,115200";
+ stdout-path = "serial0:115200n8";
+ };
+
--- /dev/null
+--- a/arch/arm/boot/dts/ox820-cloudengines-pogoplug-series-3.dts
++++ b/arch/arm/boot/dts/ox820-cloudengines-pogoplug-series-3.dts
+@@ -73,11 +73,27 @@
+ nand-ecc-algo = "hamming";
+
+ partition@0 {
+- label = "boot";
+- reg = <0x00000000 0x00e00000>;
++ label = "stage1";
++ reg = <0x00000000 0x00040000>;
+ read-only;
+ };
+
++ partition@40000 {
++ label = "u-boot";
++ reg = <0x00040000 0x00380000>;
++ read-only;
++ };
++
++ partition@3c0000 {
++ label = "u-boot-env";
++ reg = <0x003c0000 0x00080000>;
++ };
++
++ partition@440000 {
++ label = "kernel";
++ reg = <0x00440000 0x009c0000>;
++ };
++
+ partition@e00000 {
+ label = "ubi";
+ reg = <0x00e00000 0x07200000>;
--- /dev/null
+--- a/arch/arm/boot/dts/ox820-cloudengines-pogoplug-series-3.dts
++++ b/arch/arm/boot/dts/ox820-cloudengines-pogoplug-series-3.dts
+@@ -27,24 +27,28 @@
+ serial0 = &uart0;
+ gpio0 = &gpio0;
+ gpio1 = &gpio1;
++ led-boot = &led_status;
++ led-failsafe = &led_warn;
++ led-running = &led_act;
++ led-upgrade = &led_warn;
+ };
+
+ leds {
+ compatible = "gpio-leds";
+
+- blue {
++ led_status: blue {
+ label = "pogoplug:blue";
+ gpios = <&gpio0 2 0>;
+ default-state = "keep";
+ };
+
+- orange {
++ led_warn: orange {
+ label = "pogoplug:orange";
+ gpios = <&gpio1 16 1>;
+ default-state = "keep";
+ };
+
+- green {
++ led_act: green {
+ label = "pogoplug:green";
+ gpios = <&gpio1 17 1>;
+ default-state = "keep";
--- /dev/null
+--- a/arch/arm/boot/dts/ox820-cloudengines-pogoplug-series-3.dts
++++ b/arch/arm/boot/dts/ox820-cloudengines-pogoplug-series-3.dts
+@@ -11,7 +11,7 @@
+ / {
+ model = "Cloud Engines PogoPlug Series 3";
+
+- compatible = "cloudengines,pogoplugv3", "oxsemi,ox820";
++ compatible = "cloudengines,pogoplug-series-3", "cloudengines,pogoplugv3", "oxsemi,ox820";
+
+ chosen {
+ bootargs = "earlyprintk console=ttyS0,115200";
--- /dev/null
+From 552ed4955c1fee1109bf5ba137dc35a411a1448c Mon Sep 17 00:00:00 2001
+From: Daniel Golle <daniel@makrotopia.org>
+Date: Fri, 1 Jun 2018 02:41:15 +0200
+Subject: [PATCH] arm: ox820: remove left-overs
+
+Signed-off-by: Daniel Golle <daniel@makrotopia.org>
+---
+ drivers/clk/clk-oxnas.c | 2 --
+ include/dt-bindings/clock/oxsemi,ox820.h | 32 +++++++++++-------------
+ 2 files changed, 14 insertions(+), 20 deletions(-)
+
+--- a/drivers/clk/clk-oxnas.c
++++ b/drivers/clk/clk-oxnas.c
+@@ -29,8 +29,6 @@ struct oxnas_stdclk_data {
+ struct clk_hw_onecell_data *onecell_data;
+ struct clk_oxnas_gate **gates;
+ unsigned int ngates;
+- struct clk_oxnas_pll **plls;
+- unsigned int nplls;
+ };
+
+ /* Regmap offsets */
+--- a/include/dt-bindings/clock/oxsemi,ox820.h
++++ b/include/dt-bindings/clock/oxsemi,ox820.h
+@@ -6,24 +6,20 @@
+ #ifndef DT_CLOCK_OXSEMI_OX820_H
+ #define DT_CLOCK_OXSEMI_OX820_H
+
+-/* PLLs */
+-#define CLK_820_PLLA 0
+-#define CLK_820_PLLB 1
+-
+ /* Gate Clocks */
+-#define CLK_820_LEON 2
+-#define CLK_820_DMA_SGDMA 3
+-#define CLK_820_CIPHER 4
+-#define CLK_820_SD 5
+-#define CLK_820_SATA 6
+-#define CLK_820_AUDIO 7
+-#define CLK_820_USBMPH 8
+-#define CLK_820_ETHA 9
+-#define CLK_820_PCIEA 10
+-#define CLK_820_NAND 11
+-#define CLK_820_PCIEB 12
+-#define CLK_820_ETHB 13
+-#define CLK_820_REF600 14
+-#define CLK_820_USBDEV 15
++#define CLK_820_LEON 0
++#define CLK_820_DMA_SGDMA 1
++#define CLK_820_CIPHER 2
++#define CLK_820_SD 3
++#define CLK_820_SATA 4
++#define CLK_820_AUDIO 5
++#define CLK_820_USBMPH 6
++#define CLK_820_ETHA 7
++#define CLK_820_PCIEA 8
++#define CLK_820_NAND 9
++#define CLK_820_PCIEB 10
++#define CLK_820_ETHB 11
++#define CLK_820_REF600 12
++#define CLK_820_USBDEV 13
+
+ #endif /* DT_CLOCK_OXSEMI_OX820_H */
--- /dev/null
+--- a/drivers/clk/clk-oxnas.c
++++ b/drivers/clk/clk-oxnas.c
+@@ -5,19 +5,42 @@
+ * Copyright (C) 2016 Neil Armstrong <narmstrong@baylibre.com>
+ */
+
++#include <linux/clk.h>
++#include <linux/clkdev.h>
+ #include <linux/clk-provider.h>
+ #include <linux/kernel.h>
+ #include <linux/init.h>
++#include <linux/delay.h>
+ #include <linux/of.h>
+ #include <linux/of_device.h>
+ #include <linux/platform_device.h>
+ #include <linux/stringify.h>
+ #include <linux/regmap.h>
+ #include <linux/mfd/syscon.h>
++#include <linux/reset.h>
+
+ #include <dt-bindings/clock/oxsemi,ox810se.h>
+ #include <dt-bindings/clock/oxsemi,ox820.h>
+
++#define REF300_DIV_INT_SHIFT 8
++#define REF300_DIV_FRAC_SHIFT 0
++#define REF300_DIV_INT(val) ((val) << REF300_DIV_INT_SHIFT)
++#define REF300_DIV_FRAC(val) ((val) << REF300_DIV_FRAC_SHIFT)
++
++#define PLLB_BYPASS 1
++#define PLLB_ENSAT 3
++#define PLLB_OUTDIV 4
++#define PLLB_REFDIV 8
++#define PLLB_DIV_INT_SHIFT 8
++#define PLLB_DIV_FRAC_SHIFT 0
++#define PLLB_DIV_INT(val) ((val) << PLLB_DIV_INT_SHIFT)
++#define PLLB_DIV_FRAC(val) ((val) << PLLB_DIV_FRAC_SHIFT)
++
++#define PLLA_REFDIV_MASK 0x3F
++#define PLLA_REFDIV_SHIFT 8
++#define PLLA_OUTDIV_MASK 0x7
++#define PLLA_OUTDIV_SHIFT 4
++
+ /* Standard regmap gate clocks */
+ struct clk_oxnas_gate {
+ struct clk_hw hw;
+@@ -36,6 +59,135 @@ struct oxnas_stdclk_data {
+ #define CLK_SET_REGOFFSET 0x2c
+ #define CLK_CLR_REGOFFSET 0x30
+
++#define PLLA_CTRL0_REGOFFSET 0x1f0
++#define PLLA_CTRL1_REGOFFSET 0x1f4
++#define PLLB_CTRL0_REGOFFSET 0x1001f0
++#define MHZ (1000 * 1000)
++
++struct clk_oxnas_pll {
++ struct clk_hw hw;
++ struct device_node *devnode;
++ struct reset_control *rstc;
++ struct regmap *syscon;
++};
++
++#define to_clk_oxnas_pll(_hw) container_of(_hw, struct clk_oxnas_pll, hw)
++
++static unsigned long plla_clk_recalc_rate(struct clk_hw *hw,
++ unsigned long parent_rate)
++{
++ struct clk_oxnas_pll *plla = to_clk_oxnas_pll(hw);
++ unsigned long fin = parent_rate;
++ unsigned long refdiv, outdiv;
++ unsigned int pll0, fbdiv;
++
++ BUG_ON(regmap_read(plla->syscon, PLLA_CTRL0_REGOFFSET, &pll0));
++
++ refdiv = (pll0 >> PLLA_REFDIV_SHIFT) & PLLA_REFDIV_MASK;
++ refdiv += 1;
++ outdiv = (pll0 >> PLLA_OUTDIV_SHIFT) & PLLA_OUTDIV_MASK;
++ outdiv += 1;
++
++ BUG_ON(regmap_read(plla->syscon, PLLA_CTRL1_REGOFFSET, &fbdiv));
++ /* seems we will not be here when pll is bypassed, so ignore this
++ * case */
++
++ return fin / MHZ * fbdiv / (refdiv * outdiv) / 32768 * MHZ;
++}
++
++static const char *pll_clk_parents[] = {
++ "oscillator",
++};
++
++static struct clk_ops plla_ops = {
++ .recalc_rate = plla_clk_recalc_rate,
++};
++
++static struct clk_init_data clk_plla_init = {
++ .name = "plla",
++ .ops = &plla_ops,
++ .parent_names = pll_clk_parents,
++ .num_parents = ARRAY_SIZE(pll_clk_parents),
++};
++
++static int pllb_clk_is_prepared(struct clk_hw *hw)
++{
++ struct clk_oxnas_pll *pllb = to_clk_oxnas_pll(hw);
++
++ return !!pllb->rstc;
++}
++
++static int pllb_clk_prepare(struct clk_hw *hw)
++{
++ struct clk_oxnas_pll *pllb = to_clk_oxnas_pll(hw);
++
++ pllb->rstc = of_reset_control_get(pllb->devnode, NULL);
++
++ return IS_ERR(pllb->rstc) ? PTR_ERR(pllb->rstc) : 0;
++}
++
++static void pllb_clk_unprepare(struct clk_hw *hw)
++{
++ struct clk_oxnas_pll *pllb = to_clk_oxnas_pll(hw);
++
++ BUG_ON(IS_ERR(pllb->rstc));
++
++ reset_control_put(pllb->rstc);
++ pllb->rstc = NULL;
++}
++
++static int pllb_clk_enable(struct clk_hw *hw)
++{
++ struct clk_oxnas_pll *pllb = to_clk_oxnas_pll(hw);
++
++ BUG_ON(IS_ERR(pllb->rstc));
++
++ /* put PLL into bypass */
++ regmap_update_bits(pllb->syscon, PLLB_CTRL0_REGOFFSET, BIT(PLLB_BYPASS), BIT(PLLB_BYPASS));
++ wmb();
++ udelay(10);
++ reset_control_assert(pllb->rstc);
++ udelay(10);
++ /* set PLL B control information */
++ regmap_write_bits(pllb->syscon, PLLB_CTRL0_REGOFFSET, 0xffff,
++ (1 << PLLB_ENSAT) | (1 << PLLB_OUTDIV) | (2 << PLLB_REFDIV));
++ reset_control_deassert(pllb->rstc);
++ udelay(100);
++ regmap_update_bits(pllb->syscon, PLLB_CTRL0_REGOFFSET, BIT(PLLB_BYPASS), 0);
++
++ return 0;
++}
++
++static void pllb_clk_disable(struct clk_hw *hw)
++{
++ struct clk_oxnas_pll *pllb = to_clk_oxnas_pll(hw);
++
++ BUG_ON(IS_ERR(pllb->rstc));
++
++ /* put PLL into bypass */
++ regmap_update_bits(pllb->syscon, PLLB_CTRL0_REGOFFSET, BIT(PLLB_BYPASS), BIT(PLLB_BYPASS));
++
++ wmb();
++ udelay(10);
++
++ reset_control_assert(pllb->rstc);
++}
++
++static struct clk_ops pllb_ops = {
++ .prepare = pllb_clk_prepare,
++ .unprepare = pllb_clk_unprepare,
++ .is_prepared = pllb_clk_is_prepared,
++ .enable = pllb_clk_enable,
++ .disable = pllb_clk_disable,
++};
++
++static struct clk_init_data clk_pllb_init = {
++ .name = "pllb",
++ .ops = &pllb_ops,
++ .parent_names = pll_clk_parents,
++ .num_parents = ARRAY_SIZE(pll_clk_parents),
++};
++
+ static inline struct clk_oxnas_gate *to_clk_oxnas_gate(struct clk_hw *hw)
+ {
+ return container_of(hw, struct clk_oxnas_gate, hw);
+@@ -249,3 +401,42 @@ static struct platform_driver oxnas_stdc
+ },
+ };
+ builtin_platform_driver(oxnas_stdclk_driver);
++
++void __init oxnas_init_plla(struct device_node *np)
++{
++ struct clk *clk;
++ struct clk_oxnas_pll *plla;
++
++ plla = kmalloc(sizeof(*plla), GFP_KERNEL);
++ BUG_ON(!plla);
++
++ plla->syscon = syscon_node_to_regmap(of_get_parent(np));
++ plla->hw.init = &clk_plla_init;
++ plla->devnode = np;
++ plla->rstc = NULL;
++ clk = clk_register(NULL, &plla->hw);
++ BUG_ON(IS_ERR(clk));
++ /* mark it as enabled */
++ clk_prepare_enable(clk);
++ of_clk_add_provider(np, of_clk_src_simple_get, clk);
++}
++CLK_OF_DECLARE(oxnas_plla, "plxtech,nas782x-plla", oxnas_init_plla);
++
++void __init oxnas_init_pllb(struct device_node *np)
++{
++ struct clk *clk;
++ struct clk_oxnas_pll *pllb;
++
++ pllb = kmalloc(sizeof(*pllb), GFP_KERNEL);
++ BUG_ON(!pllb);
++
++ pllb->syscon = syscon_node_to_regmap(of_get_parent(np));
++ pllb->hw.init = &clk_pllb_init;
++ pllb->devnode = np;
++ pllb->rstc = NULL;
++
++ clk = clk_register(NULL, &pllb->hw);
++ BUG_ON(IS_ERR(clk));
++ of_clk_add_provider(np, of_clk_src_simple_get, clk);
++}
++CLK_OF_DECLARE(oxnas_pllb, "plxtech,nas782x-pllb", oxnas_init_pllb);
+--- a/arch/arm/boot/dts/ox820.dtsi
++++ b/arch/arm/boot/dts/ox820.dtsi
+@@ -61,12 +61,6 @@
+ clocks = <&osc>;
+ };
+
+- plla: plla {
+- compatible = "fixed-clock";
+- #clock-cells = <0>;
+- clock-frequency = <850000000>;
+- };
+-
+ armclk: armclk {
+ compatible = "fixed-factor-clock";
+ #clock-cells = <0>;
+@@ -266,6 +260,19 @@
+ compatible = "oxsemi,ox820-stdclk", "oxsemi,ox810se-stdclk";
+ #clock-cells = <1>;
+ };
++
++ plla: plla {
++ compatible = "plxtech,nas782x-plla";
++ #clock-cells = <0>;
++ clocks = <&osc>;
++ };
++
++ pllb: pllb {
++ compatible = "plxtech,nas782x-pllb";
++ #clock-cells = <0>;
++ clocks = <&osc>;
++ resets = <&reset RESET_PLLB>;
++ };
+ };
+ };
+
+@@ -287,6 +294,13 @@
+ clocks = <&armclk>;
+ };
+
++ watchdog@620 {
++ compatible = "mpcore_wdt";
++ reg = <0x620 0x20>;
++ interrupts = <GIC_PPI 14 (GIC_CPU_MASK_RAW(3)|IRQ_TYPE_LEVEL_HIGH)>;
++ clocks = <&armclk>;
++ };
++
+ gic: gic@1000 {
+ compatible = "arm,arm11mp-gic";
+ interrupt-controller;
--- /dev/null
+--- a/drivers/power/reset/Kconfig
++++ b/drivers/power/reset/Kconfig
+@@ -123,6 +123,12 @@ config POWER_RESET_OCELOT_RESET
+ help
+ This driver supports restart for Microsemi Ocelot SoC.
+
++config POWER_RESET_OXNAS
++ bool "OXNAS SoC restart driver"
++ depends on ARCH_OXNAS
++ help
++ Restart support for OXNAS boards.
++
+ config POWER_RESET_PIIX4_POWEROFF
+ tristate "Intel PIIX4 power-off driver"
+ depends on PCI
+--- a/drivers/power/reset/Makefile
++++ b/drivers/power/reset/Makefile
+@@ -11,6 +11,7 @@ obj-$(CONFIG_POWER_RESET_GPIO) += gpio-p
+ obj-$(CONFIG_POWER_RESET_GPIO_RESTART) += gpio-restart.o
+ obj-$(CONFIG_POWER_RESET_HISI) += hisi-reboot.o
+ obj-$(CONFIG_POWER_RESET_MSM) += msm-poweroff.o
++obj-$(CONFIG_POWER_RESET_OXNAS) += oxnas-restart.o
+ obj-$(CONFIG_POWER_RESET_QCOM_PON) += qcom-pon.o
+ obj-$(CONFIG_POWER_RESET_OCELOT_RESET) += ocelot-reset.o
+ obj-$(CONFIG_POWER_RESET_PIIX4_POWEROFF) += piix4-poweroff.o
--- /dev/null
+--- a/arch/arm/boot/dts/ox820.dtsi
++++ b/arch/arm/boot/dts/ox820.dtsi
+@@ -247,6 +247,15 @@
+ };
+ };
+
++ pcie_phy: pcie-phy@a00000 {
++ compatible = "oxsemi,ox820-pcie-phy";
++ reg = <0xa00000 0x10>;
++ #phy-cells = <0>;
++ resets = <&reset RESET_PCIEPHY>;
++ reset-names = "phy";
++ status = "disabled";
++ };
++
+ sys: sys-ctrl@e00000 {
+ compatible = "oxsemi,ox820-sys-ctrl", "syscon", "simple-mfd";
+ reg = <0xe00000 0x200000>;
+--- a/drivers/phy/Kconfig
++++ b/drivers/phy/Kconfig
+@@ -35,6 +35,13 @@ config PHY_LPC18XX_USB_OTG
+ This driver is need for USB0 support on LPC18xx/43xx and takes
+ care of enabling and clock setup.
+
++config PHY_OXNAS
++ tristate "Oxford Semi. OX820 PCI-E PHY support"
++ depends on HAS_IOMEM && OF && (ARM || COMPILE_TEST)
++ select GENERIC_PHY
++ help
++ This option enables support for OXNAS OX820 SoC PCIE PHY.
++
+ config PHY_PISTACHIO_USB
+ tristate "IMG Pistachio USB2.0 PHY driver"
+ depends on MACH_PISTACHIO
+--- a/drivers/phy/Makefile
++++ b/drivers/phy/Makefile
+@@ -6,6 +6,7 @@
+ obj-$(CONFIG_GENERIC_PHY) += phy-core.o
+ obj-$(CONFIG_GENERIC_PHY_MIPI_DPHY) += phy-core-mipi-dphy.o
+ obj-$(CONFIG_PHY_LPC18XX_USB_OTG) += phy-lpc18xx-usb-otg.o
++obj-$(CONFIG_PHY_OXNAS) += phy-oxnas-pcie.o
+ obj-$(CONFIG_PHY_XGENE) += phy-xgene.o
+ obj-$(CONFIG_PHY_PISTACHIO_USB) += phy-pistachio-usb.o
+ obj-$(CONFIG_ARCH_SUNXI) += allwinner/
--- /dev/null
+--- a/drivers/pci/controller/Kconfig
++++ b/drivers/pci/controller/Kconfig
+@@ -48,6 +48,11 @@ config PCIE_CADENCE_EP
+ endpoint mode. This PCIe controller may be embedded into many
+ different vendors SoCs.
+
++config PCIE_OXNAS
++ bool "PLX Oxnas PCIe controller"
++ depends on ARCH_OXNAS
++ select PCIEPORTBUS
++
+ endmenu
+
+ config PCIE_XILINX_NWL
+--- a/drivers/pci/controller/Makefile
++++ b/drivers/pci/controller/Makefile
+@@ -28,6 +28,7 @@ obj-$(CONFIG_PCIE_ROCKCHIP_EP) += pcie-r
+ obj-$(CONFIG_PCIE_ROCKCHIP_HOST) += pcie-rockchip-host.o
+ obj-$(CONFIG_PCIE_MEDIATEK) += pcie-mediatek.o
+ obj-$(CONFIG_PCIE_MOBIVEIL) += pcie-mobiveil.o
++obj-$(CONFIG_PCIE_OXNAS) += pcie-oxnas.o
+ obj-$(CONFIG_PCIE_TANGO_SMP8759) += pcie-tango.o
+ obj-$(CONFIG_VMD) += vmd.o
+ # pcie-hisi.o quirks are needed even without CONFIG_PCIE_DW
+--- a/arch/arm/boot/dts/ox820.dtsi
++++ b/arch/arm/boot/dts/ox820.dtsi
+@@ -289,7 +289,7 @@
+ #address-cells = <1>;
+ #size-cells = <1>;
+ compatible = "simple-bus";
+- ranges = <0 0x47000000 0x1000000>;
++ ranges = <0 0x47000000 0x2000>;
+
+ scu: scu@0 {
+ compatible = "arm,arm11mp-scu";
+@@ -318,5 +318,86 @@
+ <0x100 0x500>;
+ };
+ };
++
++ pcie0: pcie-controller@47c00000 {
++ compatible = "plxtech,nas782x-pcie";
++ device_type = "pci";
++ #address-cells = <3>;
++ #size-cells = <2>;
++
++ /* flag & space bus address host address size */
++ ranges = < 0x82000000 0 0x48000000 0x48000000 0 0x2000000
++ 0xC2000000 0 0x4A000000 0x4A000000 0 0x1E00000
++ 0x81000000 0 0x4BE00000 0x4BE00000 0 0x0100000
++ 0x80000000 0 0x4BF00000 0x4BF00000 0 0x0100000>;
++
++ bus-range = <0x00 0x7f>;
++
++ /* cfg inbound translator */
++ reg = <0x47c00000 0x1000>, <0x47d00000 0x100>;
++
++ phys = <&pcie_phy>;
++ phy-names = "pcie-phy";
++
++ #interrupt-cells = <1>;
++ /* wild card mask, match all bus address & interrupt specifier */
++ /* format: bus address mask, interrupt specifier mask */
++ /* each bit 1 means need match, 0 means ignored when match */
++ interrupt-map-mask = <0 0 0 0>;
++ /* format: a list of: bus address, interrupt specifier,
++ * parent interrupt controller & specifier */
++ interrupt-map = <0 0 0 0 &gic 0 19 0x304>;
++ gpios = <&gpio1 12 0>;
++ clocks = <&stdclk CLK_820_PCIEA>, <&pllb>;
++ clock-names = "pcie", "busclk";
++ resets = <&reset RESET_PCIEA>;
++ reset-names = "pcie";
++
++ plxtech,pcie-hcsl-bit = <2>;
++ plxtech,pcie-ctrl-offset = <0x120>;
++ plxtech,pcie-outbound-offset = <0x138>;
++ status = "disabled";
++ };
++
++ pcie1: pcie-controller@47e00000 {
++ compatible = "plxtech,nas782x-pcie";
++ device_type = "pci";
++ #address-cells = <3>;
++ #size-cells = <2>;
++
++ /* flag & space bus address host address size */
++ ranges = < 0x82000000 0 0x4C000000 0x4C000000 0 0x2000000
++ 0xC2000000 0 0x4E000000 0x4E000000 0 0x1E00000
++ 0x81000000 0 0x4FE00000 0x4FE00000 0 0x0100000
++ 0x80000000 0 0x4FF00000 0x4FF00000 0 0x0100000>;
++
++ bus-range = <0x80 0xff>;
++
++ /* cfg inbound translator */
++ reg = <0x47e00000 0x1000>, <0x47f00000 0x100>;
++
++ phys = <&pcie_phy>;
++ phy-names = "pcie-phy";
++
++ #interrupt-cells = <1>;
++ /* wild card mask, match all bus address & interrupt specifier */
++ /* format: bus address mask, interrupt specifier mask */
++ /* each bit 1 means need match, 0 means ignored when match */
++ interrupt-map-mask = <0 0 0 0>;
++ /* format: a list of: bus address, interrupt specifier,
++ * parent interrupt controller & specifier */
++ interrupt-map = <0 0 0 0 &gic 0 20 0x304>;
++
++ /* gpios = <&gpio1 12 0>; */
++ clocks = <&stdclk CLK_820_PCIEB>, <&pllb>;
++ clock-names = "pcie", "busclk";
++ resets = <&reset RESET_PCIEB>;
++ reset-names = "pcie";
++
++ plxtech,pcie-hcsl-bit = <3>;
++ plxtech,pcie-ctrl-offset = <0x124>;
++ plxtech,pcie-outbound-offset = <0x174>;
++ status = "disabled";
++ };
+ };
+ };
--- /dev/null
+--- a/drivers/ata/Kconfig
++++ b/drivers/ata/Kconfig
+@@ -508,6 +508,13 @@ config SATA_VITESSE
+
+ If unsure, say N.
+
++config SATA_OXNAS
++ tristate "PLXTECH NAS782X SATA support"
++ help
++ This option enables support for Nas782x Serial ATA controller.
++
++ If unsure, say N.
++
+ comment "PATA SFF controllers with BMDMA"
+
+ config PATA_ALI
+--- a/drivers/ata/Makefile
++++ b/drivers/ata/Makefile
+@@ -46,6 +46,7 @@ obj-$(CONFIG_SATA_SVW) += sata_svw.o
+ obj-$(CONFIG_SATA_ULI) += sata_uli.o
+ obj-$(CONFIG_SATA_VIA) += sata_via.o
+ obj-$(CONFIG_SATA_VITESSE) += sata_vsc.o
++obj-$(CONFIG_SATA_OXNAS) += sata_oxnas.o
+
+ # SFF PATA w/ BMDMA
+ obj-$(CONFIG_PATA_ALI) += pata_ali.o
+--- a/arch/arm/boot/dts/ox820.dtsi
++++ b/arch/arm/boot/dts/ox820.dtsi
+@@ -399,5 +399,20 @@
+ plxtech,pcie-outbound-offset = <0x174>;
+ status = "disabled";
+ };
++
++ sata: sata@45900000 {
++ compatible = "plxtech,nas782x-sata";
++ /* ports dmactl sgdma */
++ reg = <0x45900000 0x20000>, <0x459A0000 0x40>, <0x459B0000 0x20>,
++ /* core phy descriptors (optional) */
++ <0x459E0000 0x2000>, <0x44900000 0x0C>, <0x50000000 0x1000>;
++ interrupts = <GIC_SPI 18 IRQ_TYPE_LEVEL_HIGH>;
++ clocks = <&stdclk CLK_820_SATA>;
++ resets = <&reset RESET_SATA>, <&reset RESET_SATA_LINK>, <&reset RESET_SATA_PHY>;
++ reset-names = "sata", "link", "phy";
++ nr-ports = <1>;
++ status = "disabled";
++ };
++
+ };
+ };
--- /dev/null
+--- a/arch/arm/mach-oxnas/Kconfig
++++ b/arch/arm/mach-oxnas/Kconfig
+@@ -2,6 +2,7 @@
+ menuconfig ARCH_OXNAS
+ bool "Oxford Semiconductor OXNAS Family SoCs"
+ select ARCH_HAS_RESET_CONTROLLER
++ select ARCH_WANT_LIBATA_LEDS
+ select COMMON_CLK_OXNAS
+ select GPIOLIB
+ select MFD_SYSCON
--- /dev/null
+--- a/drivers/usb/host/Kconfig
++++ b/drivers/usb/host/Kconfig
+@@ -321,6 +321,13 @@ config USB_OCTEON_EHCI
+ USB 2.0 device support. All CN6XXX based chips with USB are
+ supported.
+
++config USB_EHCI_OXNAS
++ tristate "OXNAS EHCI Module"
++ depends on USB_EHCI_HCD && ARCH_OXNAS
++ select USB_EHCI_ROOT_HUB_TT
++ ---help---
++ Enable support for the OX820 SOC's on-chip EHCI controller.
++
+ endif # USB_EHCI_HCD
+
+ config USB_OXU210HP_HCD
+--- a/drivers/usb/host/Makefile
++++ b/drivers/usb/host/Makefile
+@@ -49,6 +49,7 @@ obj-$(CONFIG_USB_EHCI_HCD_STI) += ehci-s
+ obj-$(CONFIG_USB_EHCI_EXYNOS) += ehci-exynos.o
+ obj-$(CONFIG_USB_EHCI_HCD_AT91) += ehci-atmel.o
+ obj-$(CONFIG_USB_EHCI_TEGRA) += ehci-tegra.o
++obj-$(CONFIG_USB_EHCI_OXNAS) += ehci-oxnas.o
+
+ obj-$(CONFIG_USB_OXU210HP_HCD) += oxu210hp-hcd.o
+ obj-$(CONFIG_USB_ISP116X_HCD) += isp116x-hcd.o
+--- a/arch/arm/boot/dts/ox820.dtsi
++++ b/arch/arm/boot/dts/ox820.dtsi
+@@ -106,6 +106,31 @@
+ status = "disabled";
+ };
+
++ ehci: ehci@40200100 {
++ compatible = "plxtech,nas782x-ehci";
++ reg = <0x40200100 0xf00>;
++ interrupts = <GIC_SPI 7 IRQ_TYPE_LEVEL_HIGH>;
++ clocks = <&stdclk CLK_820_USBMPH>, <&pllb>, <&stdclk CLK_820_REF600>;
++ clock-names = "usb", "refsrc", "phyref";
++ resets = <&reset RESET_USBHS>, <&reset RESET_USBPHYA>, <&reset RESET_USBPHYB>;
++ reset-names = "host", "phya", "phyb";
++ oxsemi,sys-ctrl = <&sys>;
++ /* Otherwise ref300 is used, which is derived from sata phy
++ * in that case, usb depends on sata initialization */
++ /* FIXME: how to make this dependency explicit ? */
++ oxsemi,ehci_use_pllb;
++ status = "disabled";
++
++ ehci_port1: port@1 {
++ reg = <1>;
++ #trigger-source-cells = <0>;
++ };
++ ehci_port2: port@2 {
++ reg = <2>;
++ #trigger-source-cells = <0>;
++ };
++ };
++
+ apb-bridge@44000000 {
+ #address-cells = <1>;
+ #size-cells = <1>;
+--- a/arch/arm/boot/dts/ox820-cloudengines-pogoplug-series-3.dts
++++ b/arch/arm/boot/dts/ox820-cloudengines-pogoplug-series-3.dts
+@@ -105,6 +105,10 @@
+ };
+ };
+
++&ehci {
++ status = "okay";
++};
++
+ ða {
+ status = "okay";
+
--- /dev/null
+From 71270226b14733a4b1f2cde58ea9265caa50b38d Mon Sep 17 00:00:00 2001
+From: Adrian Panella <ianchi74@outlook.com>
+Date: Thu, 9 Mar 2017 09:37:17 +0100
+Subject: [PATCH 67/69] generic: Mangle bootloader's kernel arguments
+
+The command-line arguments provided by the boot loader will be
+appended to a new device tree property: bootloader-args.
+If there is a property "append-rootblock" in DT under /chosen
+and a root= option in bootloaders command line it will be parsed
+and added to DT bootargs with the form: <append-rootblock>XX.
+Only command line ATAG will be processed, the rest of the ATAGs
+sent by bootloader will be ignored.
+This is usefull in dual boot systems, to get the current root partition
+without afecting the rest of the system.
+
+Signed-off-by: Adrian Panella <ianchi74@outlook.com>
+---
+ arch/arm/Kconfig | 11 +++++
+ arch/arm/boot/compressed/atags_to_fdt.c | 72 ++++++++++++++++++++++++++++++++-
+ init/main.c | 16 ++++++++
+ 3 files changed, 98 insertions(+), 1 deletion(-)
+
+--- a/arch/arm/Kconfig
++++ b/arch/arm/Kconfig
+@@ -1825,6 +1825,17 @@ config ARM_ATAG_DTB_COMPAT_CMDLINE_EXTEN
+ The command-line arguments provided by the boot loader will be
+ appended to the the device tree bootargs property.
+
++config ARM_ATAG_DTB_COMPAT_CMDLINE_MANGLE
++ bool "Append rootblock parsing bootloader's kernel arguments"
++ help
++ The command-line arguments provided by the boot loader will be
++ appended to a new device tree property: bootloader-args.
++ If there is a property "append-rootblock" in DT under /chosen
++ and a root= option in bootloaders command line it will be parsed
++ and added to DT bootargs with the form: <append-rootblock>XX.
++ Only command line ATAG will be processed, the rest of the ATAGs
++ sent by bootloader will be ignored.
++
+ endchoice
+
+ config CMDLINE
+--- a/arch/arm/boot/compressed/atags_to_fdt.c
++++ b/arch/arm/boot/compressed/atags_to_fdt.c
+@@ -4,6 +4,8 @@
+
+ #if defined(CONFIG_ARM_ATAG_DTB_COMPAT_CMDLINE_EXTEND)
+ #define do_extend_cmdline 1
++#elif defined(CONFIG_ARM_ATAG_DTB_COMPAT_CMDLINE_MANGLE)
++#define do_extend_cmdline 1
+ #else
+ #define do_extend_cmdline 0
+ #endif
+@@ -67,6 +69,59 @@ static uint32_t get_cell_size(const void
+ return cell_size;
+ }
+
++#if defined(CONFIG_ARM_ATAG_DTB_COMPAT_CMDLINE_MANGLE)
++
++static char *append_rootblock(char *dest, const char *str, int len, void *fdt)
++{
++ char *ptr, *end;
++ char *root="root=";
++ int i, l;
++ const char *rootblock;
++
++ //ARM doesn't have __HAVE_ARCH_STRSTR, so search manually
++ ptr = str - 1;
++
++ do {
++ //first find an 'r' at the begining or after a space
++ do {
++ ptr++;
++ ptr = strchr(ptr, 'r');
++ if(!ptr) return dest;
++
++ } while (ptr != str && *(ptr-1) != ' ');
++
++ //then check for the rest
++ for(i = 1; i <= 4; i++)
++ if(*(ptr+i) != *(root+i)) break;
++
++ } while (i != 5);
++
++ end = strchr(ptr, ' ');
++ end = end ? (end - 1) : (strchr(ptr, 0) - 1);
++
++ //find partition number (assumes format root=/dev/mtdXX | /dev/mtdblockXX | yy:XX )
++ for( i = 0; end >= ptr && *end >= '0' && *end <= '9'; end--, i++);
++ ptr = end + 1;
++
++ /* if append-rootblock property is set use it to append to command line */
++ rootblock = getprop(fdt, "/chosen", "append-rootblock", &l);
++ if(rootblock != NULL) {
++ if(*dest != ' ') {
++ *dest = ' ';
++ dest++;
++ len++;
++ }
++ if (len + l + i <= COMMAND_LINE_SIZE) {
++ memcpy(dest, rootblock, l);
++ dest += l - 1;
++ memcpy(dest, ptr, i);
++ dest += i;
++ }
++ }
++ return dest;
++}
++#endif
++
+ static void merge_fdt_bootargs(void *fdt, const char *fdt_cmdline)
+ {
+ char cmdline[COMMAND_LINE_SIZE];
+@@ -86,12 +141,21 @@ static void merge_fdt_bootargs(void *fdt
+
+ /* and append the ATAG_CMDLINE */
+ if (fdt_cmdline) {
++
++#if defined(CONFIG_ARM_ATAG_DTB_COMPAT_CMDLINE_MANGLE)
++ //save original bootloader args
++ //and append ubi.mtd with root partition number to current cmdline
++ setprop_string(fdt, "/chosen", "bootloader-args", fdt_cmdline);
++ ptr = append_rootblock(ptr, fdt_cmdline, len, fdt);
++
++#else
+ len = strlen(fdt_cmdline);
+ if (ptr - cmdline + len + 2 < COMMAND_LINE_SIZE) {
+ *ptr++ = ' ';
+ memcpy(ptr, fdt_cmdline, len);
+ ptr += len;
+ }
++#endif
+ }
+ *ptr = '\0';
+
+@@ -166,7 +230,9 @@ int atags_to_fdt(void *atag_list, void *
+ else
+ setprop_string(fdt, "/chosen", "bootargs",
+ atag->u.cmdline.cmdline);
+- } else if (atag->hdr.tag == ATAG_MEM) {
++ }
++#ifndef CONFIG_ARM_ATAG_DTB_COMPAT_CMDLINE_MANGLE
++ else if (atag->hdr.tag == ATAG_MEM) {
+ if (memcount >= sizeof(mem_reg_property)/4)
+ continue;
+ if (!atag->u.mem.size)
+@@ -210,6 +276,10 @@ int atags_to_fdt(void *atag_list, void *
+ setprop(fdt, "/memory", "reg", mem_reg_property,
+ 4 * memcount * memsize);
+ }
++#else
++
++ }
++#endif
+
+ return fdt_pack(fdt);
+ }
+--- a/init/main.c
++++ b/init/main.c
+@@ -103,6 +103,10 @@
+ #define CREATE_TRACE_POINTS
+ #include <trace/events/initcall.h>
+
++#if defined(CONFIG_ARM_ATAG_DTB_COMPAT_CMDLINE_MANGLE)
++#include <linux/of.h>
++#endif
++
+ static int kernel_init(void *);
+
+ extern void init_IRQ(void);
+@@ -630,6 +634,18 @@ asmlinkage __visible void __init start_k
+ page_alloc_init();
+
+ pr_notice("Kernel command line: %s\n", boot_command_line);
++
++#if defined(CONFIG_ARM_ATAG_DTB_COMPAT_CMDLINE_MANGLE)
++ //Show bootloader's original command line for reference
++ if(of_chosen) {
++ const char *prop = of_get_property(of_chosen, "bootloader-args", NULL);
++ if(prop)
++ pr_notice("Bootloader command line (ignored): %s\n", prop);
++ else
++ pr_notice("Bootloader command line not present\n");
++ }
++#endif
++
+ /* parameters may set static keys */
+ jump_label_init();
+ parse_early_param();
--- /dev/null
+--- a/drivers/ata/libata-core.c
++++ b/drivers/ata/libata-core.c
+@@ -1584,6 +1584,14 @@ unsigned ata_exec_internal_sg(struct ata
+ return AC_ERR_SYSTEM;
+ }
+
++ if (ap->ops->acquire_hw && !ap->ops->acquire_hw(ap, 0, 0)) {
++ spin_unlock_irqrestore(ap->lock, flags);
++ if (!ap->ops->acquire_hw(ap, 1, (2*HZ))) {
++ return AC_ERR_TIMEOUT;
++ }
++ spin_lock_irqsave(ap->lock, flags);
++ }
++
+ /* initialize internal qc */
+ qc = __ata_qc_from_tag(ap, ATA_TAG_INTERNAL);
+
+@@ -5123,6 +5131,9 @@ struct ata_queued_cmd *ata_qc_new_init(s
+ if (unlikely(ap->pflags & ATA_PFLAG_FROZEN))
+ return NULL;
+
++ if (ap->ops->qc_new && ap->ops->qc_new(ap))
++ return NULL;
++
+ /* libsas case */
+ if (ap->flags & ATA_FLAG_SAS_HOST) {
+ tag = ata_sas_allocate_tag(ap);
+@@ -5168,6 +5179,8 @@ void ata_qc_free(struct ata_queued_cmd *
+ qc->tag = ATA_TAG_POISON;
+ if (ap->flags & ATA_FLAG_SAS_HOST)
+ ata_sas_free_tag(tag, ap);
++ if (ap->ops->qc_free)
++ ap->ops->qc_free(qc);
+ }
+ }
+
+--- a/include/linux/libata.h
++++ b/include/linux/libata.h
+@@ -905,6 +905,8 @@ struct ata_port_operations {
+ void (*qc_prep)(struct ata_queued_cmd *qc);
+ unsigned int (*qc_issue)(struct ata_queued_cmd *qc);
+ bool (*qc_fill_rtf)(struct ata_queued_cmd *qc);
++ int (*qc_new)(struct ata_port *ap);
++ void (*qc_free)(struct ata_queued_cmd *qc);
+
+ /*
+ * Configuration and exception handling
+@@ -995,6 +997,9 @@ struct ata_port_operations {
+ void (*phy_reset)(struct ata_port *ap);
+ void (*eng_timeout)(struct ata_port *ap);
+
++ int (*acquire_hw)(struct ata_port *ap, int may_sleep,
++ int timeout_jiffies);
++
+ /*
+ * ->inherits must be the last field and all the preceding
+ * fields must be pointers.
projects / oweals / openwrt.git / commitdiff