From 9c64c3e69fa60b3657d33e829a411cb37064a169 Mon Sep 17 00:00:00 2001
From: Ian Moffett <ian@osmora.org>
Date: Sat, 17 May 2025 21:54:24 -0400
Subject: kernel: pci: Add pci_add_device()

Signed-off-by: Ian Moffett <ian@osmora.org>
---
 sys/dev/pci/pci.c         | 11 +++++++++++
 sys/include/dev/pci/pci.h |  2 ++
 2 files changed, 13 insertions(+)

(limited to 'sys')

diff --git a/sys/dev/pci/pci.c b/sys/dev/pci/pci.c
index 8328ffc..d59f68f 100644
--- a/sys/dev/pci/pci.c
+++ b/sys/dev/pci/pci.c
@@ -31,6 +31,7 @@
 #include <sys/queue.h>
 #include <sys/syslog.h>
 #include <sys/errno.h>
+#include <sys/spinlock.h>
 #include <dev/pci/pci.h>
 #include <dev/pci/pciregs.h>
 #include <vm/dynalloc.h>
@@ -39,6 +40,7 @@
 #define pr_trace(fmt, ...) kprintf("pci: " fmt, ##__VA_ARGS__)
 
 static TAILQ_HEAD(, pci_device) device_list;
+static struct spinlock devlist_lock = {0};
 
 static bool
 pci_dev_exists(uint8_t bus, uint8_t slot, uint8_t func)
@@ -262,6 +264,15 @@ pci_get_device(struct pci_lookup lookup, uint16_t lookup_type)
     return NULL;
 }
 
+
+void
+pci_add_device(struct pci_device *dev)
+{
+    spinlock_acquire(&devlist_lock);
+    TAILQ_INSERT_TAIL(&device_list, dev, link);
+    spinlock_release(&devlist_lock);
+}
+
 int
 pci_init(void)
 {
diff --git a/sys/include/dev/pci/pci.h b/sys/include/dev/pci/pci.h
index 1d8b3a6..de6d8fb 100644
--- a/sys/include/dev/pci/pci.h
+++ b/sys/include/dev/pci/pci.h
@@ -85,6 +85,8 @@ int pci_map_bar(struct pci_device *dev, uint8_t barno, void **vap);
 void pci_writel(struct pci_device *dev, uint32_t offset, pcireg_t val);
 
 int pci_enable_msix(struct pci_device *dev, const struct msi_intr *intr);
+void pci_add_device(struct pci_device *dev);
+
 void pci_msix_eoi(void);
 int pci_init(void);
 
-- 
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