[Skiboot] [PATCH v5 5/7] vas: Create device tree node

[Sukadev Bhattiprolu]

Sukadev Bhattiprolu [sukadev at linux.vnet.ibm.com] wrote:
> Create a device tree node for VAS and add properties that Linux
> will need to configure/use VAS.

Stewart, Balbir,

When reviewing the kernel patches, Mikey pointed out[1] that rather
than having 6 separate properties for the VAS window info, we could
make them all "reg" properties.

Here is the updated skiboot patch (other patches in this skiboot series
are unaffected by this change). We will need this updated patch to go
with [v4] of the kernel patch set[2].

Thanks,

Sukadev

[1] Mikey's review comments:
    https://lists.ozlabs.org/pipermail/linuxppc-dev/2017-March/155834.html

[2] v4 of kernel patch set
    https://lists.ozlabs.org/pipermail/linuxppc-dev/2017-March/156078.html

---

>From 8adbcd31f9dae84e9535709993b95ca9d8974576 Mon Sep 17 00:00:00 2001
From: Sukadev Bhattiprolu <sukadev at linux.vnet.ibm.com>
Date: Wed, 25 Jan 2017 16:05:29 -0800
Subject: [PATCH v5 5/7] vas: Create device tree node

Create a device tree node for VAS and add properties that Linux
will need to configure/use VAS.

Signed-off-by: Sukadev Bhattiprolu <sukadev at linux.vnet.ibm.com>
---

Changelog[v5]:
	[Michael Neuling] Rather than having separate properties for
	HVWC, UWC and window address, make them all "reg" properties.
---
 core/vas.c | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/core/vas.c b/core/vas.c
index 6d475f9..32ff99e 100644
--- a/core/vas.c
+++ b/core/vas.c
@@ -256,6 +256,24 @@ static inline uint64_t get_window_base_addr(struct proc_chip *chip)
 	return val;
 }
 
+static void create_dt_node(struct proc_chip *chip)
+{
+	struct dt_node *dn;
+	uint64_t hvwc_start, uwc_start, win_base;
+
+	win_base = get_window_base_addr(chip);
+	hvwc_start = get_hvwc_mmio_bar(chip->id);
+	uwc_start = get_uwc_mmio_bar(chip->id);
+
+	dn = dt_new_addr(chip->devnode, "vas", win_base);
+
+	dt_add_property_u64s(dn, "reg", hvwc_start, VAS_HVWC_MMIO_BAR_SIZE,
+					uwc_start, VAS_UWC_MMIO_BAR_SIZE,
+					win_base, RMA_LSMP_WINID_SHIFT);
+
+	dt_add_property(dn, "vas-id", &chip->vas_id, sizeof(chip->vas_id));
+}
+
 /*
  * Initialize VAS on one chip
  */
@@ -275,6 +293,8 @@ static int init_one_chip(struct proc_chip *chip)
 	if (init_rma(chip))
 		goto out;
 
+	create_dt_node(chip);
+
 	prlog(PR_INFO, "VAS: Initialized chip %d\n", chip->id);
 	return 0;
 
-- 
2.7.4