Changes in uspace/drv/bus/isa/isa.c [443695e:832cbe7] in mainline

File:

• uspace/drv/bus/isa/isa.c (modified) (3 diffs)

uspace/drv/bus/isa/isa.c

@@ -1 +1 @@
 /*
- * Copyright (c) 2024 Jiri Svoboda
+ * Copyright (c) 2025 Jiri Svoboda
  * Copyright (c) 2010 Lenka Trochtova
  * Copyright (c) 2011 Jan Vesely
@@ -206 +206 @@
 }
 
-static errno_t isa_fun_get_flags(ddf_fun_t *fnode, hw_res_flags_t *rflags)
+/** Handle legacy IO availability query from function.
+ *
+ * @param fnode Function performing the query
+ * @param rclaims Place to store the legacy IO claims bitmask
+ * @return EOK on success or an error code
+ */
+static errno_t isa_fun_query_legacy_io(ddf_fun_t *fnode,
+    hw_res_claims_t *rclaims)
 {
         isa_fun_t *fun = isa_fun(fnode);
-        hw_res_flags_t flags;
-
-        flags = 0;
-        if (fun->bus->pci_isa_bridge)
-                flags |= hwf_isa_bridge;
-
-        ddf_msg(LVL_NOTE, "isa_fun_get_flags: returning 0x%x", flags);
-        *rflags = flags;
+        hw_res_claims_t claims;
+        async_sess_t *sess;
+        errno_t rc;
+
+        ddf_msg(LVL_DEBUG, "isa_fun_query_legacy_io()");
+
+        sess = ddf_dev_parent_sess_get(fun->bus->dev);
+        if (sess == NULL) {
+                ddf_msg(LVL_ERROR, "isa_dev_add failed to connect to the "
+                    "parent driver.");
+                return ENOENT;
+        }
+
+        if (!fun->bus->pci_isa_bridge) {
+                ddf_msg(LVL_NOTE, "isa_fun_query_legacy_io: classic ISA - "
+                    "legacy IDE range is available");
+                /* Classic ISA, we can be sure IDE is unclaimed by PCI */
+                claims = 0;
+        } else {
+                ddf_msg(LVL_NOTE, "isa_fun_query_legacy_io: ISA bridge - "
+                    "determine legacy IDE availability from PCI bus driver");
+                rc = hw_res_query_legacy_io(sess, &claims);
+                if (rc != EOK) {
+                        ddf_msg(LVL_NOTE, "Error querying legacy IO claims.");
+                        return rc;
+                }
+        }
+
+        ddf_msg(LVL_DEBUG, "isa_fun_query_legacy_io: returning 0x%x", claims);
+        *rclaims = claims;
         return EOK;
 }
@@ -227 +256 @@
         .dma_channel_setup = isa_fun_setup_dma,
         .dma_channel_remain = isa_fun_remain_dma,
-        .get_flags = isa_fun_get_flags
+        .query_legacy_io = isa_fun_query_legacy_io
 };