refactor: one more step towards arch-agnostic design

[lunaix-os.git] / lunaix-os / hal / pci.c

diff --git a/lunaix-os/hal/pci.c b/lunaix-os/hal/pci.c
index 04c75752180358108afb4e34f4d8261756df480c..1457aa17e0d16b0fa1f97cdf1dfe1a2632390be6 100644 (file)
--- a/lunaix-os/hal/pci.c
+++ b/lunaix-os/hal/pci.c
@@ -8,9 +8,10 @@
  * @copyright Copyright (c) 2022
  *
  */
  * @copyright Copyright (c) 2022
  *
  */

-#include <hal/acpi/acpi.h>
-#include <hal/apic.h>

 #include <hal/pci.h>
 #include <hal/pci.h>

+#include <sys/pci_hba.h>
+
+#include <klibc/string.h>

 #include <lunaix/fs/twifs.h>
 #include <lunaix/mm/valloc.h>
 #include <lunaix/spike.h>
 #include <lunaix/fs/twifs.h>
 #include <lunaix/mm/valloc.h>
 #include <lunaix/spike.h>


@@ -18,7 +19,8 @@
 
 LOG_MODULE("PCI")
 
 
 LOG_MODULE("PCI")
 

-static struct llist_header pci_devices;
+static DEFINE_LLIST(pci_devices);
+static DEFINE_LLIST(pci_drivers);

 
 void
 pci_probe_msi_info(struct pci_device* device);
 
 void
 pci_probe_msi_info(struct pci_device* device);


@@ -26,7 +28,7 @@ pci_probe_msi_info(struct pci_device* device);
 void
 pci_probe_device(int bus, int dev, int funct)
 {
 void
 pci_probe_device(int bus, int dev, int funct)
 {

-    uint32_t base = PCI_ADDRESS(bus, dev, funct);
+    u32_t base = PCI_ADDRESS(bus, dev, funct);

     pci_reg_t reg1 = pci_read_cspace(base, 0);
 
     // Vendor=0xffff则表示设备不存在
     pci_reg_t reg1 = pci_read_cspace(base, 0);
 
     // Vendor=0xffff则表示设备不存在


@@ -66,6 +68,23 @@ pci_probe_device(int bus, int dev, int funct)
     pci_probe_bar_info(device);
 
     llist_append(&pci_devices, &device->dev_chain);
     pci_probe_bar_info(device);
 
     llist_append(&pci_devices, &device->dev_chain);

+
+    if (!pci_bind_driver(device)) {
+        kprintf(KWARN "dev.%d:%d:%d %x:%x unknown device\n",
+                bus,
+                dev,
+                funct,
+                PCI_DEV_VENDOR(reg1),
+                PCI_DEV_DEVID(reg1));
+    } else {
+        kprintf("dev.%d:%d:%d %x:%x %s\n",
+                bus,
+                dev,
+                funct,
+                PCI_DEV_VENDOR(reg1),
+                PCI_DEV_DEVID(reg1),
+                device->driver.type->name);
+    }

 }
 
 void
 }
 
 void


@@ -83,7 +102,7 @@ pci_probe()
 void
 pci_probe_bar_info(struct pci_device* device)
 {
 void
 pci_probe_bar_info(struct pci_device* device)
 {

-    uint32_t bar;
+    u32_t bar;

     struct pci_base_addr* ba;
     for (size_t i = 0; i < 6; i++) {
         ba = &device->bar[i];
     struct pci_base_addr* ba;
     for (size_t i = 0; i < 6; i++) {
         ba = &device->bar[i];


@@ -113,7 +132,7 @@ pci_probe_msi_info(struct pci_device* device)
     }
 
     pci_reg_t cap_ptr = pci_read_cspace(device->cspace_base, 0x34) & 0xff;
     }
 
     pci_reg_t cap_ptr = pci_read_cspace(device->cspace_base, 0x34) & 0xff;

-    uint32_t cap_hdr;
+    u32_t cap_hdr;

 
     while (cap_ptr) {
         cap_hdr = pci_read_cspace(device->cspace_base, cap_ptr);
 
     while (cap_ptr) {
         cap_hdr = pci_read_cspace(device->cspace_base, cap_ptr);


@@ -126,7 +145,7 @@ pci_probe_msi_info(struct pci_device* device)
     }
 }
 
     }
 }
 

-void
+static void

 __pci_read_cspace(struct twimap* map)
 {
     struct pci_device* pcidev = (struct pci_device*)(map->data);
 __pci_read_cspace(struct twimap* map)
 {
     struct pci_device* pcidev = (struct pci_device*)(map->data);


@@ -139,21 +158,21 @@ __pci_read_cspace(struct twimap* map)
     map->size_acc = 256;
 }
 
     map->size_acc = 256;
 }
 

-void
+static void

 __pci_read_revid(struct twimap* map)
 {
     int class = twimap_data(map, struct pci_device*)->class_info;
     twimap_printf(map, "0x%x", PCI_DEV_REV(class));
 }
 
 __pci_read_revid(struct twimap* map)
 {
     int class = twimap_data(map, struct pci_device*)->class_info;
     twimap_printf(map, "0x%x", PCI_DEV_REV(class));
 }
 

-void
+static void

 __pci_read_class(struct twimap* map)
 {
     int class = twimap_data(map, struct pci_device*)->class_info;
     twimap_printf(map, "0x%x", PCI_DEV_CLASS(class));
 }
 
 __pci_read_class(struct twimap* map)
 {
     int class = twimap_data(map, struct pci_device*)->class_info;
     twimap_printf(map, "0x%x", PCI_DEV_CLASS(class));
 }
 

-void
+static void

 __pci_bar_read(struct twimap* map)
 {
     struct pci_device* pcidev = twimap_data(map, struct pci_device*);
 __pci_bar_read(struct twimap* map)
 {
     struct pci_device* pcidev = twimap_data(map, struct pci_device*);


@@ -181,7 +200,7 @@ __pci_bar_read(struct twimap* map)
     twimap_printf(map, "\n");
 }
 
     twimap_printf(map, "\n");
 }
 

-int
+static int

 __pci_bar_gonext(struct twimap* map)
 {
     if (twimap_index(map, int) >= 5) {
 __pci_bar_gonext(struct twimap* map)
 {
     if (twimap_index(map, int) >= 5) {


@@ -221,9 +240,10 @@ pci_build_fsmapping()
         map->go_next = __pci_bar_gonext;
     }
 }
         map->go_next = __pci_bar_gonext;
     }
 }

+EXPORT_TWIFS_PLUGIN(pci_devs, pci_build_fsmapping);

 
 size_t
 
 size_t

-pci_bar_sizing(struct pci_device* dev, uint32_t* bar_out, uint32_t bar_num)
+pci_bar_sizing(struct pci_device* dev, u32_t* bar_out, u32_t bar_num)

 {
     pci_reg_t bar = pci_read_cspace(dev->cspace_base, PCI_REG_BAR(bar_num));
     if (!bar) {
 {
     pci_reg_t bar = pci_read_cspace(dev->cspace_base, PCI_REG_BAR(bar_num));
     if (!bar) {


@@ -242,40 +262,10 @@ pci_bar_sizing(struct pci_device* dev, uint32_t* bar_out, uint32_t bar_num)
     return ~sized + 1;
 }
 
     return ~sized + 1;
 }
 

-void
-pci_setup_msi(struct pci_device* device, int vector)
-{
-    // Dest: APIC#0, Physical Destination, No redirection
-    uint32_t msi_addr = (__APIC_BASE_PADDR);
-
-    // Edge trigger, Fixed delivery
-    uint32_t msi_data = vector;
-
-    pci_write_cspace(
-      device->cspace_base, PCI_MSI_ADDR(device->msi_loc), msi_addr);
-
-    pci_reg_t reg1 = pci_read_cspace(device->cspace_base, device->msi_loc);
-    pci_reg_t msg_ctl = reg1 >> 16;
-
-    int offset = !!(msg_ctl & MSI_CAP_64BIT) * 4;
-    pci_write_cspace(device->cspace_base,
-                     PCI_MSI_DATA(device->msi_loc, offset),
-                     msi_data & 0xffff);
-
-    if ((msg_ctl & MSI_CAP_MASK)) {
-        pci_write_cspace(
-          device->cspace_base, PCI_MSI_MASK(device->msi_loc, offset), 0);
-    }
-
-    // manipulate the MSI_CTRL to allow device using MSI to request service.
-    reg1 = (reg1 & 0xff8fffff) | 0x10000;
-    pci_write_cspace(device->cspace_base, device->msi_loc, reg1);
-}
-

 struct pci_device*
 struct pci_device*

-pci_get_device_by_id(uint16_t vendorId, uint16_t deviceId)
+pci_get_device_by_id(u16_t vendorId, u16_t deviceId)

 {
 {

-    uint32_t dev_info = vendorId | (deviceId << 16);
+    u32_t dev_info = vendorId | (deviceId << 16);

     struct pci_device *pos, *n;
     llist_for_each(pos, n, &pci_devices, dev_chain)
     {
     struct pci_device *pos, *n;
     llist_for_each(pos, n, &pci_devices, dev_chain)
     {


@@ -288,7 +278,7 @@ pci_get_device_by_id(uint16_t vendorId, uint16_t deviceId)
 }
 
 struct pci_device*
 }
 
 struct pci_device*

-pci_get_device_by_class(uint32_t class)
+pci_get_device_by_class(u32_t class)

 {
     struct pci_device *pos, *n;
     llist_for_each(pos, n, &pci_devices, dev_chain)
 {
     struct pci_device *pos, *n;
     llist_for_each(pos, n, &pci_devices, dev_chain)


@@ -302,17 +292,56 @@ pci_get_device_by_class(uint32_t class)
 }
 
 void
 }
 
 void

-pci_init()
+pci_add_driver(const char* name,
+               u32_t class,
+               u32_t vendor,
+               u32_t devid,
+               pci_drv_init init)

 {
 {

-    llist_init_head(&pci_devices);
-    acpi_context* acpi = acpi_get_context();
-    assert_msg(acpi, "ACPI not initialized.");
-    if (acpi->mcfg.alloc_num) {
-        // PCIe Enhanced Configuration Mechanism is supported.
-        // TODO: support PCIe addressing mechanism
+    struct pci_driver* pci_drv = valloc(sizeof(*pci_drv));
+    *pci_drv = (struct pci_driver){ .create_driver = init,
+                                    .dev_info = (vendor << 16) | devid,
+                                    .dev_class = class };
+    if (name) {
+        strncpy(pci_drv->name, name, PCI_DRV_NAME_LEN);

     }
     }

-    // Otherwise, fallback to use legacy PCI 3.0 method.
-    pci_probe();

 
 

-    pci_build_fsmapping();
+    llist_append(&pci_drivers, &pci_drv->drivers);
+}
+
+int
+pci_bind_driver(struct pci_device* pci_dev)
+{
+    struct pci_driver *pos, *n;
+    llist_for_each(pos, n, &pci_drivers, drivers)
+    {
+        if (pos->dev_info) {
+            if (pos->dev_info == pci_dev->device_info) {
+                goto check_type;
+            }
+            continue;
+        }
+    check_type:
+        if (pos->dev_class) {
+            if (pos->dev_class == PCI_DEV_CLASS(pci_dev->class_info)) {
+                pci_dev->driver.type = pos;
+                pci_dev->driver.instance = pos->create_driver(pci_dev);
+                return 1;
+            }
+        }
+    }
+    return 0;
+}
+
+void
+pci_load_devices()
+{
+    int i = 0;
+    struct pci_driver* dev;
+    ldga_foreach(pci_dev_drivers, struct pci_driver*, i, dev)
+    {
+        llist_append(&pci_drivers, &dev->drivers);
+    }
+
+    pci_probe();

 }
\ No newline at end of file
 }
\ No newline at end of file