From 7b466039798f38e5e1314f1c2a492dc17dbebc01 Mon Sep 17 00:00:00 2001
From: Alex Griffin <a@ajgrf.com>
Date: Fri, 31 May 2019 09:50:54 -0500
Subject: [PATCH] services: Add load-broadcom-sta-service.

* nongnu/services/kernel-modules.scm: New file.
---
 nongnu/services/kernel-modules.scm | 75 ++++++++++++++++++++++++++++++
 1 file changed, 75 insertions(+)
 create mode 100644 nongnu/services/kernel-modules.scm

diff --git a/nongnu/services/kernel-modules.scm b/nongnu/services/kernel-modules.scm
new file mode 100644
index 0000000..4fac783
--- /dev/null
+++ b/nongnu/services/kernel-modules.scm
@@ -0,0 +1,75 @@
+;;; Copyright © 2019 Alex Griffin <a@ajgrf.com>
+;;;
+;;; This program is free software: you can redistribute it and/or modify
+;;; it under the terms of the GNU General Public License as published by
+;;; the Free Software Foundation, either version 3 of the License, or
+;;; (at your option) any later version.
+;;;
+;;; This program is distributed in the hope that it will be useful,
+;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+;;; GNU General Public License for more details.
+;;;
+;;; You should have received a copy of the GNU General Public License
+;;; along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+(define-module (nongnu services kernel-modules)
+  #:use-module (gnu packages linux)
+  #:use-module (gnu services)
+  #:use-module (gnu services base)
+  #:use-module (gnu services shepherd)
+  #:use-module (guix gexp)
+  #:use-module (guix records)
+  #:use-module (ice-9 match)
+  #:use-module (nongnu packages linux)
+  #:export (load-broadcom-sta-service))
+
+;;;
+;;; broadcom-sta
+;;;
+
+(define-record-type* <load-broadcom-sta-configuration>
+  load-broadcom-sta-configuration make-load-broadcom-sta-configuration
+  load-broadcom-sta-configuration?
+  (package load-broadcom-sta-configuration-package
+           (default broadcom-sta)))
+
+(define load-broadcom-sta-shepherd-service
+  (match-lambda
+    (($ <load-broadcom-sta-configuration> package)
+     (list
+      (shepherd-service
+       (documentation "Load nonfree Broadcom wireless driver.")
+       (provision '(load-broadcom-sta))
+       (respawn? #f)
+       (start
+        #~(lambda _
+            (and
+             (zero? (system* "modprobe" "cfg80211"))
+             (zero? (system* "modprobe" "lib80211"))
+             (zero? (system* "env" (string-append
+                                    "LINUX_MODULE_DIRECTORY="
+                                    #$(file-append package "/lib/modules"))
+                                    "modprobe" "wl"))))))))))
+
+(define load-broadcom-sta-service-type
+  (service-type
+   (name 'load-broadcom-sta)
+   (extensions
+    (list
+     (service-extension profile-service-type
+                        (compose list load-broadcom-sta-configuration-package))
+     (service-extension shepherd-root-service-type
+                        load-broadcom-sta-shepherd-service)))
+   (description "Load the nonfree Broadcom wireless driver.")
+   (default-value (load-broadcom-sta-configuration))))
+
+(define* (load-broadcom-sta-service #:key (broadcom-sta broadcom-sta))
+  "Return a service that loads the nonfree Broadcom wireless driver.
+
+Users should also blacklist conflicting modules by adding the following
+to kernel-arguments:
+modprobe.blacklist=b43,b43legacy,ssb,bcm43xx,brcm80211,brcmfmac,brcmsmac,bcma"
+  (service load-broadcom-sta-service-type
+           (load-broadcom-sta-configuration
+            (package broadcom-sta))))