#ifndef __LUNAIX_PCI_H
#define __LUNAIX_PCI_H
-#include <hal/io.h>
+#include <lunaix/device.h>
+#include <lunaix/ds/ldga.h>
#include <lunaix/ds/llist.h>
+#include <lunaix/ds/hashtable.h>
+#include <lunaix/types.h>
+#include <lunaix/changeling.h>
-#define PCI_CONFIG_ADDR 0xcf8
-#define PCI_CONFIG_DATA 0xcfc
-
-#define PCI_TDEV 0x0
-#define PCI_TPCIBRIDGE 0x1
-#define PCI_TCARDBRIDGE 0x2
+#include "irq.h"
#define PCI_VENDOR_INVLD 0xffff
#define PCI_REG_VENDOR_DEV 0
#define PCI_REG_STATUS_CMD 0x4
-#define PCI_REG_BAR(offset) (0x10 + (offset)*4)
+#define PCI_REG_BAR(num) (0x10 + (num - 1) * 4)
-#define PCI_DEV_VENDOR(x) ((x)&0xffff)
-#define PCI_DEV_DEVID(x) ((x) >> 16)
-#define PCI_INTR_IRQ(x) ((x)&0xff)
-#define PCI_INTR_PIN(x) (((x)&0xff00) >> 8)
+#define PCI_DEV_VENDOR(x) ((x) & 0xffff)
+#define PCI_DEV_DEVID(x) (((x) & 0xffff0000) >> 16)
+#define PCI_INTR_IRQ(x) ((x) & 0xff)
+#define PCI_INTR_PIN(x) (((x) & 0xff00) >> 8)
#define PCI_DEV_CLASS(x) ((x) >> 8)
-#define PCI_DEV_REV(x) (((x)&0xff))
-#define PCI_BUS_NUM(x) ((x >> 16) & 0xff)
-#define PCI_SLOT_NUM(x) ((x >> 11) & 0x1f)
-#define PCI_FUNCT_NUM(x) ((x >> 8) & 0x7)
-
-#define PCI_ADDRESS(bus, dev, funct) \
- (((bus)&0xff) << 16) | (((dev)&0xff) << 11) | (((funct)&0xff) << 8) | \
- 0x80000000
+#define PCI_DEV_REV(x) (((x) & 0xff))
+#define PCI_BUS_NUM(x) (((x) >> 16) & 0xff)
+#define PCI_SLOT_NUM(x) (((x) >> 11) & 0x1f)
+#define PCI_FUNCT_NUM(x) (((x) >> 8) & 0x7)
+
+#define PCI_BAR_MMIO(x) (!((x) & 0x1))
+#define PCI_BAR_CACHEABLE(x) ((x) & 0x8)
+#define PCI_BAR_TYPE(x) ((x) & 0x6)
+#define PCI_BAR_ADDR_MM(x) ((x) & ~0xf)
+#define PCI_BAR_ADDR_IO(x) ((x) & ~0x3)
+#define PCI_BAR_COUNT 6
+
+#define PCI_MSI_ADDR_LO(msi_base) ((msi_base) + 4)
+#define PCI_MSI_ADDR_HI(msi_base) ((msi_base) + 8)
+#define PCI_MSI_DATA(msi_base, offset) ((msi_base) + 8 + offset)
+#define PCI_MSI_MASK(msi_base, offset) ((msi_base) + 0xc + offset)
+
+#define MSI_CAP_64BIT 0x80
+#define MSI_CAP_MASK 0x100
+#define MSI_CAP_ENABLE 0x1
+
+#define PCI_RCMD_DISABLE_INTR (1 << 10)
+#define PCI_RCMD_FAST_B2B (1 << 9)
+#define PCI_RCMD_BUS_MASTER (1 << 2)
+#define PCI_RCMD_MM_ACCESS (1 << 1)
+#define PCI_RCMD_IO_ACCESS 1
+
+#define PCI_CFGADDR(pciloc) ((u32_t)(pciloc) << 8) | 0x80000000UL
+
+#define PCILOC(bus, dev, funct) \
+ (((bus) & 0xff) << 8) | (((dev) & 0x1f) << 3) | ((funct) & 0x7)
+#define PCILOC_BUS(loc) (((loc) >> 8) & 0xff)
+#define PCILOC_DEV(loc) (((loc) >> 3) & 0x1f)
+#define PCILOC_FN(loc) ((loc) & 0x7)
typedef unsigned int pci_reg_t;
+typedef u16_t pciaddr_t;
// PCI device header format
// Ref: "PCI Local Bus Specification, Rev.3, Section 6.1"
-struct pci_device
+#define BAR_TYPE_MMIO 0x1
+#define BAR_TYPE_CACHABLE 0x2
+#define PCI_DRV_NAME_LEN 32
+
+struct pci_base_addr
{
- struct llist_header dev_chain;
- uint32_t device_info;
- uint32_t class_info;
- uint32_t cspace_base;
- uint32_t msi_loc;
- uint16_t intr_info;
+ u32_t start;
+ u32_t size;
+ u32_t type;
};
-// PCI Configuration Space (C-Space) r/w:
-// Refer to "PCI Local Bus Specification, Rev.3, Section 3.2.2.3.2"
+struct pci_probe
+{
+ morph_t mobj;
+
+ pciaddr_t loc;
+ u16_t intr_info;
+ u32_t device_info;
+ u32_t class_info;
+ u32_t cspace_base;
+ u32_t msi_loc;
+ struct pci_base_addr bar[6];
+
+ struct device* bind;
+ struct irq_domain* irq_domain;
+};
+#define pci_probe_morpher morphable_attrs(pci_probe, mobj)
+
+typedef bool (*pci_id_checker_t)(struct pci_probe*);
-inline pci_reg_t
-pci_read_cspace(uint32_t base, int offset)
+struct pci_registry
{
- io_outl(PCI_CONFIG_ADDR, base | (offset & ~0x3));
- return io_inl(PCI_CONFIG_DATA);
+ struct hlist_node entries;
+ struct device_def* definition;
+
+ pci_id_checker_t check_compact;
+};
+
+bool
+pci_register_driver(struct device_def* def, pci_id_checker_t checker);
+
+/**
+ * @brief 初始化PCI设备的基地址寄存器。返回由该基地址代表的，
+ * 设备所使用的MMIO或I/O地址空间的，大小。
+ * 参阅：PCI LB Spec. (Rev 3) Section 6.2.5.1, Implementation Note.
+ *
+ * @param dev The PCI device
+ * @param bar_out Value in BAR
+ * @param bar_num The index of BAR (starting from 1)
+ * @return size_t
+ */
+size_t
+pci_bar_sizing(struct pci_probe* probe, u32_t* bar_out, u32_t bar_num);
+
+irq_t
+pci_declare_msi_irq(irq_servant callback, struct pci_probe* probe);
+
+int
+pci_assign_msi(struct pci_probe* probe, irq_t irq, void* irq_spec);
+
+/**
+ * @brief Bind an abstract device instance to the pci device
+ *
+ * @param pcidev pci device
+ * @param dev abstract device instance
+ */
+static inline void
+pci_bind_instance(struct pci_probe* probe, struct device* dev)
+{
+ probe->bind = dev;
+
}
-inline void
-pci_write_cspace(uint32_t base, int offset, pci_reg_t data)
+int
+pci_bind_driver(struct pci_registry* reg);
+
+
+static inline unsigned int
+pci_device_vendor(struct pci_probe* probe)
{
- io_outl(PCI_CONFIG_ADDR, base | (offset & ~0x3));
- io_outl(PCI_CONFIG_DATA, data);
+ return PCI_DEV_VENDOR(probe->device_info);
}
-void
-pci_probe();
+static inline unsigned int
+pci_device_devid(struct pci_probe* probe)
+{
+ return PCI_DEV_DEVID(probe->device_info);
+}
-void
-pci_init();
+static inline unsigned int
+pci_device_class(struct pci_probe* probe)
+{
+ return PCI_DEV_CLASS(probe->class_info);
+}
+
+static inline struct pci_base_addr*
+pci_device_bar(struct pci_probe* probe, int index)
+{
+ return &probe->bar[index];
+}
+
+static inline void
+pci_cmd_set_mmio(pci_reg_t* cmd)
+{
+ *cmd |= PCI_RCMD_MM_ACCESS;
+}
+
+static inline ptr_t
+pci_requester_id(struct pci_probe* probe)
+{
+ return probe->loc;
+}
+
+static inline void
+pci_cmd_set_pmio(pci_reg_t* cmd)
+{
+ *cmd |= PCI_RCMD_IO_ACCESS;
+}
+
+static inline void
+pci_cmd_set_msi(pci_reg_t* cmd)
+{
+ *cmd |= PCI_RCMD_DISABLE_INTR;
+}
+
+static inline void
+pci_cmd_set_bus_master(pci_reg_t* cmd)
+{
+ *cmd |= PCI_RCMD_BUS_MASTER;
+}
+
+static inline void
+pci_cmd_set_fast_b2b(pci_reg_t* cmd)
+{
+ *cmd |= PCI_RCMD_FAST_B2B;
+}
+
+static inline bool
+pci_bar_mmio_space(struct pci_base_addr* bar)
+{
+ return (bar->type & BAR_TYPE_MMIO);
+}
+
+static inline bool
+pci_capability_msi(struct pci_probe* probe)
+{
+ return !!probe->msi_loc;
+}
+
+static inline int
+pci_intr_irq(struct pci_probe* probe)
+{
+ return PCI_INTR_IRQ(probe->intr_info);
+}
void
-pci_print_device();
+pci_apply_command(struct pci_probe* probe, pci_reg_t cmd);
-struct pci_device* pci_get_device_by_class(uint32_t class);
+pci_reg_t
+pci_read_cspace(ptr_t base, int offset);
-struct pci_device*
-pci_get_device_by_id(uint16_t vendorId, uint16_t deviceId);
+void
+pci_write_cspace(ptr_t base, int offset, pci_reg_t data);
#endif /* __LUNAIX_PCI_H */
git://scm.lunaixsky.com / lunaix-os.git / blobdiff