SLFO-pool/powerpc-utils
SHA256
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Sync from SUSE:SLFO:Main powerpc-utils revision 648b2067e3097712778c8f53027aba60

Browse Source
This commit is contained in:
Adrian Schröter 2024-09-24 00:32:22 +02:00
parent 709afd9ba2
commit d16dfc0a8c
6 changed files with 405 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

99
0001-drmgr-pci-Enable-in-kernel-functionality-to-update-d.patch Normal file
View File

@ -0,0 +1,99 @@
From a6a7d375d38823a08d358b50866a95f6f326907e Mon Sep 17 00:00:00 2001
From: Haren Myneni <haren@linux.ibm.com>
Date: Tue, 13 Aug 2024 14:40:23 -0700
Subject: [PATCH 1/4] drmgr/pci: Enable in-kernel functionality to update
device tree
drmgr updates the device tree by writing to /proc/ppc64/ofdt. Also
invokes configure_connector RTAS call to retrieve new device nodes
for IO ADD. But this functionality need /dev/mem access which is
restricted under system lockdown.
The kernel updates provided a sysfs file (/sys/kernel/dlpar) that
will allow drmgr command invoke the following interfaces to update
the device tree.
dt add index <DRC index> ---> To add new device nodes to the device
tree which is used for IO ADD.
dt remove index <DRC index> ---> To remove device nodes for IO
REMOVE
This patch checks the kernel interface for the availability of
device tree update feature and adds do_dt_kernel_dlpar() to invoke
the above kernel interfaces.
Signed-off-by: Haren Myneni <haren@linux.ibm.com>
---
src/drmgr/common.c | 6 ++++++
src/drmgr/common_pci.c | 29 +++++++++++++++++++++++++++++
src/drmgr/dr.h | 1 +
3 files changed, 36 insertions(+)
diff --git a/src/drmgr/common.c b/src/drmgr/common.c
index bfec0b9bb966..70f4dfda92a5 100644
--- a/src/drmgr/common.c
+++ b/src/drmgr/common.c
@@ -1504,6 +1504,12 @@ int kernel_dlpar_exists(void)
if (strstr(buf, "cpu"))
return 1;
break;
+ case DRC_TYPE_PCI:
+ case DRC_TYPE_PHB:
+ case DRC_TYPE_SLOT:
+ if (strstr(buf, "dt"))
+ return 1;
+ break;
default:
return 0;
}
diff --git a/src/drmgr/common_pci.c b/src/drmgr/common_pci.c
index 1ef4ec9653b0..374129cf33e0 100644
--- a/src/drmgr/common_pci.c
+++ b/src/drmgr/common_pci.c
@@ -1619,3 +1619,32 @@ int disable_hp_children(char *drc_name)
}
return 0;
}
+
+/*
+ * kernel interface to update device tree nodes.
+ * dlpar dt [add|remove] index <#drc index>
+ */
+int do_dt_kernel_dlpar(uint32_t index, int action)
+{
+ char cmdbuf[256];
+ int offset;
+
+ offset = sprintf(cmdbuf, "%s ", "dt");
+
+ switch (action) {
+ case ADD:
+ offset += sprintf(cmdbuf + offset, "add ");
+ break;
+ case REMOVE:
+ offset += sprintf(cmdbuf + offset, "remove ");
+ break;
+ default:
+ /* Should not happen */
+ say(ERROR, "Invalid action type specified\n");
+ return -EINVAL;
+ }
+
+ offset += sprintf(cmdbuf + offset, "index 0x%x", index);
+
+ return do_kernel_dlpar(cmdbuf, offset);
+}
diff --git a/src/drmgr/dr.h b/src/drmgr/dr.h
index 60c31c44b7e3..72ede55547a3 100644
--- a/src/drmgr/dr.h
+++ b/src/drmgr/dr.h
@@ -188,4 +188,5 @@ static inline int do_kernel_dlpar(const char *cmd, int len)
{
return do_kernel_dlpar_common(cmd, len, 0);
}
+int do_dt_kernel_dlpar(uint32_t, int);
#endif
--
2.46.0

72
0002-drmgr-SLOT-Add-kernel-interface-support-for-device-t.patch Normal file
View File

@ -0,0 +1,72 @@
From e2388681df4aec97ab9a3f883baf37f51a710a00 Mon Sep 17 00:00:00 2001
From: Haren Myneni <haren@linux.ibm.com>
Date: Tue, 13 Aug 2024 14:40:26 -0700
Subject: [PATCH 2/4] drmgr/SLOT: Add kernel interface support for device tree
update
Use the following kernel interfaces for SLOT device type to update
the device tree if this feature is enabled in the kernel.
dt add index <DRC index> --> for IO add
dt remove index <DRC index> --> for IO remove
Signed-off-by: Haren Myneni <haren@linux.ibm.com>
---
src/drmgr/drslot_chrp_slot.c | 25 +++++++++++++++++--------
1 file changed, 17 insertions(+), 8 deletions(-)
diff --git a/src/drmgr/drslot_chrp_slot.c b/src/drmgr/drslot_chrp_slot.c
index 0966c256aa01..180b10857add 100644
--- a/src/drmgr/drslot_chrp_slot.c
+++ b/src/drmgr/drslot_chrp_slot.c
@@ -71,7 +71,10 @@ release_slot(struct dr_node *slot)
if (rc)
return rc;
- rc = remove_device_tree_nodes(slot->ofdt_path);
+ if (kernel_dlpar_exists())
+ rc = do_dt_kernel_dlpar(slot->drc_index, REMOVE);
+ else
+ rc = remove_device_tree_nodes(slot->ofdt_path);
if (rc) {
acquire_drc(slot->drc_index);
return rc;
@@ -160,7 +163,6 @@ static int
acquire_slot(char *drc_name, struct dr_node **slot)
{
struct dr_connector drc;
- struct of_node *of_nodes;
char path[DR_PATH_MAX];
int rc;
@@ -180,14 +182,21 @@ acquire_slot(char *drc_name, struct dr_node **slot)
if (rc)
return rc;
- of_nodes = configure_connector(drc.index);
- if (of_nodes == NULL) {
- release_drc(drc.index, PCI_DLPAR_DEV);
- return -1;
+ if (kernel_dlpar_exists()) {
+ rc = do_dt_kernel_dlpar(drc.index, ADD);
+ } else {
+ struct of_node *of_nodes;
+
+ of_nodes = configure_connector(drc.index);
+ if (of_nodes == NULL) {
+ release_drc(drc.index, PCI_DLPAR_DEV);
+ return -1;
+ }
+
+ rc = add_device_tree_nodes(path, of_nodes);
+ free_of_node(of_nodes);
}
- rc = add_device_tree_nodes(path, of_nodes);
- free_of_node(of_nodes);
if (rc) {
say(ERROR, "add_device_tree_nodes failed at %s\n", path);
release_drc(drc.index, PCI_DLPAR_DEV);
--
2.46.0

79
0003-drmgr-pci-Add-kernel-interface-support-for-device-tr.patch Normal file
View File

@ -0,0 +1,79 @@
From 7038756642711fa53143906b3b3f29900eb4a4ea Mon Sep 17 00:00:00 2001
From: Haren Myneni <haren@linux.ibm.com>
Date: Tue, 13 Aug 2024 14:40:25 -0700
Subject: [PATCH 3/4] drmgr/pci: Add kernel interface support for device tree
update
Use the following kernel interfaces for PCI device type to update
the device tree if this feature is enabled in the kernel.
dt add index <DRC index> --> for IO add
dt remove index <DRC index> --> for IO remove
Signed-off-by: Haren Myneni <haren@linux.ibm.com>
---
src/drmgr/drslot_chrp_pci.c | 32 ++++++++++++++++++++++----------
1 file changed, 22 insertions(+), 10 deletions(-)
diff --git a/src/drmgr/drslot_chrp_pci.c b/src/drmgr/drslot_chrp_pci.c
index 3b48de30be66..56f8bb397e67 100644
--- a/src/drmgr/drslot_chrp_pci.c
+++ b/src/drmgr/drslot_chrp_pci.c
@@ -366,7 +366,6 @@ static int add_work(struct dr_node *node)
int pow_state; /* Tells us if power was turned on when */
int iso_state; /* Tells us isolation state after */
int rc;
- struct of_node *new_nodes;/* nodes returned from configure_connector */
/* if we're continuing, set LED_ON and see if a card is really there. */
if (process_led(node, LED_ON))
@@ -425,16 +424,26 @@ static int add_work(struct dr_node *node)
* the return status requires a message, print it out
* and exit, otherwise, add the nodes to the OF tree.
*/
- new_nodes = configure_connector(node->drc_index);
- if (new_nodes == NULL) {
- rtas_set_indicator(ISOLATION_STATE, node->drc_index, ISOLATE);
- set_power(node->drc_power, POWER_OFF);
- return -1;
+ if (kernel_dlpar_exists()) {
+ rc = do_dt_kernel_dlpar(node->drc_index, ADD);
+ } else {
+ struct of_node *new_nodes; /* nodes returned from */
+ /* configure_connector */
+
+ new_nodes = configure_connector(node->drc_index);
+ if (new_nodes == NULL) {
+ rtas_set_indicator(ISOLATION_STATE, node->drc_index,
+ ISOLATE);
+ set_power(node->drc_power, POWER_OFF);
+ return -1;
+ }
+
+ say(DEBUG, "Adding %s to %s\n", new_nodes->name,
+ node->ofdt_path);
+ rc = add_device_tree_nodes(node->ofdt_path, new_nodes);
+ free_of_node(new_nodes);
}
- say(DEBUG, "Adding %s to %s\n", new_nodes->name, node->ofdt_path);
- rc = add_device_tree_nodes(node->ofdt_path, new_nodes);
- free_of_node(new_nodes);
if (rc) {
say(DEBUG, "add_device_tree_nodes failed at %s\n",
node->ofdt_path);
@@ -692,7 +701,10 @@ static struct dr_node *remove_work(struct dr_node *all_nodes)
* the device tree.
*/
for (child = node->children; child; child = child->next) {
- rc = remove_device_tree_nodes(child->ofdt_path);
+ if (kernel_dlpar_exists())
+ rc = do_dt_kernel_dlpar(child->drc_index, REMOVE);
+ else
+ rc = remove_device_tree_nodes(child->ofdt_path);
if (rc) {
say(ERROR, "%s", sw_error);
rtas_set_indicator(ISOLATION_STATE, node->drc_index,
--
2.46.0

142
0004-drmgr-phb-Add-kernel-interface-support-for-device-tr.patch Normal file
View File

@ -0,0 +1,142 @@
From b8ab373035984dd8aba29f1a0c03dcef6546f004 Mon Sep 17 00:00:00 2001
From: Haren Myneni <haren@linux.ibm.com>
Date: Tue, 13 Aug 2024 14:40:24 -0700
Subject: [PATCH 4/4] drmgr/phb: Add kernel interface support for device tree
update
Use the following kernel interfaces for PHB device type to update
the device tree if this feature is enabled in the kernel.
dt add index <DRC index> --> for IO add
dt remove index <DRC index> --> for IO remove
Signed-off-by: Haren Myneni <haren@linux.ibm.com>
---
src/drmgr/common_pci.c | 29 +++++++++++++++++++++-------
src/drmgr/drslot_chrp_phb.c | 38 ++++++++++++++++++++-----------------
2 files changed, 43 insertions(+), 24 deletions(-)
diff --git a/src/drmgr/common_pci.c b/src/drmgr/common_pci.c
index 374129cf33e0..540864574569 100644
--- a/src/drmgr/common_pci.c
+++ b/src/drmgr/common_pci.c
@@ -1390,7 +1390,6 @@ print_node_list(struct dr_node *first_node)
static int
acquire_hp_resource(struct dr_connector *drc, char *of_path)
{
- struct of_node *new_nodes;
int state;
int rc;
@@ -1429,12 +1428,21 @@ acquire_hp_resource(struct dr_connector *drc, char *of_path)
}
if (state == PRESENT) {
- new_nodes = configure_connector(drc->index);
- if (new_nodes == NULL)
- return -1;
+ /*
+ * Use kernel DLPAR interface if it is enabled
+ */
+ if (kernel_dlpar_exists()) {
+ rc = do_dt_kernel_dlpar(drc->index, ADD);
+ } else {
+ struct of_node *new_nodes;
+
+ new_nodes = configure_connector(drc->index);
+ if (new_nodes == NULL)
+ return -1;
- rc = add_device_tree_nodes(of_path, new_nodes);
- free_of_node(new_nodes);
+ rc = add_device_tree_nodes(of_path, new_nodes);
+ free_of_node(new_nodes);
+ }
if (rc) {
say(ERROR, "add nodes failed for 0x%x\n", drc->index);
return rc;
@@ -1490,7 +1498,14 @@ release_hp_resource(struct dr_node *node)
{
int rc;
- rc = remove_device_tree_nodes(node->ofdt_path);
+ /*
+ * Use kernel DLPAR interface if it is enabled
+ */
+ if (kernel_dlpar_exists())
+ rc = do_dt_kernel_dlpar(node->drc_index, REMOVE);
+ else
+ rc = remove_device_tree_nodes(node->ofdt_path);
+
if (rc) {
say(ERROR, "failed to remove kernel nodes for index 0x%x\n",
node->drc_index);
diff --git a/src/drmgr/drslot_chrp_phb.c b/src/drmgr/drslot_chrp_phb.c
index f59baa4f9e27..ffa17d8f6b7d 100644
--- a/src/drmgr/drslot_chrp_phb.c
+++ b/src/drmgr/drslot_chrp_phb.c
@@ -108,17 +108,16 @@ release_phb(struct dr_node *phb)
{
int rc;
- rc = remove_device_tree_nodes(phb->ofdt_path);
- if (rc)
- return rc;
-
- if (phb->phb_ic_ofdt_path[0] != '\0') {
- rc = remove_device_tree_nodes(phb->phb_ic_ofdt_path);
- if (rc)
- return rc;
+ if (kernel_dlpar_exists())
+ rc = do_dt_kernel_dlpar(phb->drc_index, REMOVE);
+ else {
+ rc = remove_device_tree_nodes(phb->ofdt_path);
+ if (!rc && (phb->phb_ic_ofdt_path[0] != '\0'))
+ rc = remove_device_tree_nodes(phb->phb_ic_ofdt_path);
}
- rc = release_drc(phb->drc_index, PHB_DEV);
+ if (!rc)
+ rc = release_drc(phb->drc_index, PHB_DEV);
return rc;
}
@@ -371,7 +370,6 @@ phb_remove_error:
static int acquire_phb(char *drc_name, struct dr_node **phb)
{
struct dr_connector drc;
- struct of_node *of_nodes;
char path[DR_PATH_MAX];
int rc;
@@ -386,14 +384,20 @@ static int acquire_phb(char *drc_name, struct dr_node **phb)
if (rc)
return rc;
- of_nodes = configure_connector(drc.index);
- if (of_nodes == NULL) {
- release_drc(drc.index, PHB_DEV);
- return -1;
- }
+ if (kernel_dlpar_exists()) {
+ rc = do_dt_kernel_dlpar(drc.index, ADD);
+ } else {
+ struct of_node *of_nodes;
- rc = add_device_tree_nodes(path, of_nodes);
- free_of_node(of_nodes);
+ of_nodes = configure_connector(drc.index);
+ if (of_nodes == NULL) {
+ release_drc(drc.index, PHB_DEV);
+ return -1;
+ }
+
+ rc = add_device_tree_nodes(path, of_nodes);
+ free_of_node(of_nodes);
+ }
if (rc) {
say(ERROR, "add_device_tree_nodes failed at %s\n", path);
release_drc(drc.index, PHB_DEV);
--
2.46.0

9
powerpc-utils.changes
View File

@ -1,3 +1,12 @@
-------------------------------------------------------------------
Fri Sep 20 06:15:46 UTC 2024 - Michal Suchanek <msuchanek@suse.de>
- dlpar: move key portions of I/O hotplug into kernel (jsc#PED-10566, jsc#PED-9919).
* 0001-drmgr-pci-Enable-in-kernel-functionality-to-update-d.patch
* 0002-drmgr-SLOT-Add-kernel-interface-support-for-device-t.patch
* 0003-drmgr-pci-Add-kernel-interface-support-for-device-tr.patch
* 0004-drmgr-phb-Add-kernel-interface-support-for-device-tr.patch
-------------------------------------------------------------------
Wed Jul 31 10:02:13 UTC 2024 - Michal Suchanek <msuchanek@suse.com>

4
powerpc-utils.spec
View File

@ -37,6 +37,10 @@ Patch9: ppc64_cpu-Clean-up-sysfs-smt-control-error-handling.patch
Patch10: 0002-lparstat-Fix-Idle-and-busy-PURR-SPURR.patch
Patch11: 0003-lparstat-app-Use-pic-value-at-boot-for-accurate-boot.patch
Patch12: 0004-lparstat-Use-CLOCK_BOOTTIME-for-get_time-interface-a.patch
Patch13: 0001-drmgr-pci-Enable-in-kernel-functionality-to-update-d.patch
Patch14: 0002-drmgr-SLOT-Add-kernel-interface-support-for-device-t.patch
Patch15: 0003-drmgr-pci-Add-kernel-interface-support-for-device-tr.patch
Patch16: 0004-drmgr-phb-Add-kernel-interface-support-for-device-tr.patch
BuildRequires: autoconf
BuildRequires: automake
BuildRequires: libnuma-devel