Update Linux to v5.10.109
Sourced from [1]
[1] https://cdn.kernel.org/pub/linux/kernel/v5.x/linux-5.10.109.tar.xz
Change-Id: I19bca9fc6762d4e63bcf3e4cba88bbe560d9c76c
Signed-off-by: Olivier Deprez <olivier.deprez@arm.com>
diff --git a/drivers/pci/hotplug/Kconfig b/drivers/pci/hotplug/Kconfig
index e7b493c..840a84b 100644
--- a/drivers/pci/hotplug/Kconfig
+++ b/drivers/pci/hotplug/Kconfig
@@ -6,7 +6,7 @@
menuconfig HOTPLUG_PCI
bool "Support for PCI Hotplug"
depends on PCI && SYSFS
- ---help---
+ help
Say Y here if you have a motherboard with a PCI Hotplug controller.
This allows you to add and remove PCI cards while the machine is
powered up and running.
@@ -83,7 +83,7 @@
depends on HOTPLUG_PCI_CPCI && X86
help
Say Y here if you have an Performance Technologies (formerly Intel,
- formerly just Ziatech) Ziatech ZT5550 CompactPCI system card.
+ formerly just Ziatech) Ziatech ZT5550 CompactPCI system card.
To compile this driver as a module, choose M here: the
module will be called cpcihp_zt5550.
diff --git a/drivers/pci/hotplug/acpi_pcihp.c b/drivers/pci/hotplug/acpi_pcihp.c
index 6b7c1ed..2750a64 100644
--- a/drivers/pci/hotplug/acpi_pcihp.c
+++ b/drivers/pci/hotplug/acpi_pcihp.c
@@ -61,7 +61,7 @@
/**
* acpi_get_hp_hw_control_from_firmware
- * @dev: the pci_dev of the bridge that has a hotplug controller
+ * @pdev: the pci_dev of the bridge that has a hotplug controller
*
* Attempt to take hotplug control from firmware.
*/
@@ -191,7 +191,7 @@
/**
* acpi_pci_detect_ejectable - check if the PCI bus has ejectable slots
- * @handle - handle of the PCI bus to scan
+ * @handle: handle of the PCI bus to scan
*
* Returns 1 if the PCI bus has ACPI based ejectable slots, 0 otherwise.
*/
diff --git a/drivers/pci/hotplug/acpiphp_glue.c b/drivers/pci/hotplug/acpiphp_glue.c
index 98be06a..f031302 100644
--- a/drivers/pci/hotplug/acpiphp_glue.c
+++ b/drivers/pci/hotplug/acpiphp_glue.c
@@ -393,19 +393,12 @@
static void acpiphp_set_acpi_region(struct acpiphp_slot *slot)
{
struct acpiphp_func *func;
- union acpi_object params[2];
- struct acpi_object_list arg_list;
list_for_each_entry(func, &slot->funcs, sibling) {
- arg_list.count = 2;
- arg_list.pointer = params;
- params[0].type = ACPI_TYPE_INTEGER;
- params[0].integer.value = ACPI_ADR_SPACE_PCI_CONFIG;
- params[1].type = ACPI_TYPE_INTEGER;
- params[1].integer.value = 1;
/* _REG is optional, we don't care about if there is failure */
- acpi_evaluate_object(func_to_handle(func), "_REG", &arg_list,
- NULL);
+ acpi_evaluate_reg(func_to_handle(func),
+ ACPI_ADR_SPACE_PCI_CONFIG,
+ ACPI_REG_CONNECT);
}
}
diff --git a/drivers/pci/hotplug/ibmphp_res.c b/drivers/pci/hotplug/ibmphp_res.c
index 5c93aa1..ae9acc7 100644
--- a/drivers/pci/hotplug/ibmphp_res.c
+++ b/drivers/pci/hotplug/ibmphp_res.c
@@ -1941,7 +1941,7 @@
break;
case PCI_HEADER_TYPE_BRIDGE:
function = 0x8;
- /* fall through */
+ fallthrough;
case PCI_HEADER_TYPE_MULTIBRIDGE:
/* We assume here that only 1 bus behind the bridge
TO DO: add functionality for several:
diff --git a/drivers/pci/hotplug/pciehp.h b/drivers/pci/hotplug/pciehp.h
index aa61d4c..f1f789f 100644
--- a/drivers/pci/hotplug/pciehp.h
+++ b/drivers/pci/hotplug/pciehp.h
@@ -72,6 +72,8 @@
* @reset_lock: prevents access to the Data Link Layer Link Active bit in the
* Link Status register and to the Presence Detect State bit in the Slot
* Status register during a slot reset which may cause them to flap
+ * @depth: Number of additional hotplug ports in the path to the root bus,
+ * used as lock subclass for @reset_lock
* @ist_running: flag to keep user request waiting while IRQ thread is running
* @request_result: result of last user request submitted to the IRQ thread
* @requester: wait queue to wake up on completion of user request,
@@ -84,6 +86,7 @@
struct pcie_device *pcie;
u32 slot_cap; /* capabilities and quirks */
+ unsigned int inband_presence_disabled:1;
u16 slot_ctrl; /* control register access */
struct mutex ctrl_lock;
@@ -102,6 +105,7 @@
struct hotplug_slot hotplug_slot; /* hotplug core interface */
struct rw_semaphore reset_lock;
+ unsigned int depth;
unsigned int ist_running;
int request_result;
wait_queue_head_t requester;
@@ -147,8 +151,6 @@
#define MRL_SENS(ctrl) ((ctrl)->slot_cap & PCI_EXP_SLTCAP_MRLSP)
#define ATTN_LED(ctrl) ((ctrl)->slot_cap & PCI_EXP_SLTCAP_AIP)
#define PWR_LED(ctrl) ((ctrl)->slot_cap & PCI_EXP_SLTCAP_PIP)
-#define HP_SUPR_RM(ctrl) ((ctrl)->slot_cap & PCI_EXP_SLTCAP_HPS)
-#define EMI(ctrl) ((ctrl)->slot_cap & PCI_EXP_SLTCAP_EIP)
#define NO_CMD_CMPL(ctrl) ((ctrl)->slot_cap & PCI_EXP_SLTCAP_NCCS)
#define PSN(ctrl) (((ctrl)->slot_cap & PCI_EXP_SLTCAP_PSN) >> 19)
diff --git a/drivers/pci/hotplug/pciehp_core.c b/drivers/pci/hotplug/pciehp_core.c
index 312cc45..e7fe4b4 100644
--- a/drivers/pci/hotplug/pciehp_core.c
+++ b/drivers/pci/hotplug/pciehp_core.c
@@ -153,6 +153,7 @@
/**
* pciehp_check_presence() - synthesize event if presence has changed
+ * @ctrl: controller to check
*
* On probe and resume, an explicit presence check is necessary to bring up an
* occupied slot or bring down an unoccupied slot. This can't be triggered by
@@ -165,7 +166,7 @@
{
int occupied;
- down_read(&ctrl->reset_lock);
+ down_read_nested(&ctrl->reset_lock, ctrl->depth);
mutex_lock(&ctrl->state_lock);
occupied = pciehp_card_present_or_link_active(ctrl);
@@ -275,7 +276,7 @@
* If the port is already runtime suspended we can keep it that
* way.
*/
- if (dev_pm_smart_suspend_and_suspended(&dev->port->dev))
+ if (dev_pm_skip_suspend(&dev->port->dev))
return 0;
pciehp_disable_interrupt(dev);
diff --git a/drivers/pci/hotplug/pciehp_ctrl.c b/drivers/pci/hotplug/pciehp_ctrl.c
index 6503d15..529c348 100644
--- a/drivers/pci/hotplug/pciehp_ctrl.c
+++ b/drivers/pci/hotplug/pciehp_ctrl.c
@@ -73,10 +73,8 @@
/* Check link training status */
retval = pciehp_check_link_status(ctrl);
- if (retval) {
- ctrl_err(ctrl, "Failed to check link status\n");
+ if (retval)
goto err_exit;
- }
/* Check for a power fault */
if (ctrl->power_fault_detected || pciehp_query_power_fault(ctrl)) {
@@ -236,7 +234,7 @@
switch (ctrl->state) {
case BLINKINGOFF_STATE:
cancel_delayed_work(&ctrl->button_work);
- /* fall through */
+ fallthrough;
case ON_STATE:
ctrl->state = POWEROFF_STATE;
mutex_unlock(&ctrl->state_lock);
@@ -265,7 +263,7 @@
switch (ctrl->state) {
case BLINKINGON_STATE:
cancel_delayed_work(&ctrl->button_work);
- /* fall through */
+ fallthrough;
case OFF_STATE:
ctrl->state = POWERON_STATE;
mutex_unlock(&ctrl->state_lock);
diff --git a/drivers/pci/hotplug/pciehp_hpc.c b/drivers/pci/hotplug/pciehp_hpc.c
index 88b9967..30708af 100644
--- a/drivers/pci/hotplug/pciehp_hpc.c
+++ b/drivers/pci/hotplug/pciehp_hpc.c
@@ -14,6 +14,7 @@
#define dev_fmt(fmt) "pciehp: " fmt
+#include <linux/dmi.h>
#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/jiffies.h>
@@ -26,6 +27,24 @@
#include "../pci.h"
#include "pciehp.h"
+static const struct dmi_system_id inband_presence_disabled_dmi_table[] = {
+ /*
+ * Match all Dell systems, as some Dell systems have inband
+ * presence disabled on NVMe slots (but don't support the bit to
+ * report it). Setting inband presence disabled should have no
+ * negative effect, except on broken hotplug slots that never
+ * assert presence detect--and those will still work, they will
+ * just have a bit of extra delay before being probed.
+ */
+ {
+ .ident = "Dell System",
+ .matches = {
+ DMI_MATCH(DMI_OEM_STRING, "Dell System"),
+ },
+ },
+ {}
+};
+
static inline struct pci_dev *ctrl_dev(struct controller *ctrl)
{
return ctrl->pcie->port;
@@ -68,7 +87,7 @@
struct pci_dev *pdev = ctrl_dev(ctrl);
u16 slot_status;
- while (true) {
+ do {
pcie_capability_read_word(pdev, PCI_EXP_SLTSTA, &slot_status);
if (slot_status == (u16) ~0) {
ctrl_info(ctrl, "%s: no response from device\n",
@@ -81,11 +100,9 @@
PCI_EXP_SLTSTA_CC);
return 1;
}
- if (timeout < 0)
- break;
msleep(10);
timeout -= 10;
- }
+ } while (timeout >= 0);
return 0; /* timeout */
}
@@ -254,14 +271,33 @@
return found;
}
+static void pcie_wait_for_presence(struct pci_dev *pdev)
+{
+ int timeout = 1250;
+ u16 slot_status;
+
+ do {
+ pcie_capability_read_word(pdev, PCI_EXP_SLTSTA, &slot_status);
+ if (slot_status & PCI_EXP_SLTSTA_PDS)
+ return;
+ msleep(10);
+ timeout -= 10;
+ } while (timeout > 0);
+}
+
int pciehp_check_link_status(struct controller *ctrl)
{
struct pci_dev *pdev = ctrl_dev(ctrl);
bool found;
u16 lnk_status;
- if (!pcie_wait_for_link(pdev, true))
+ if (!pcie_wait_for_link(pdev, true)) {
+ ctrl_info(ctrl, "Slot(%s): No link\n", slot_name(ctrl));
return -1;
+ }
+
+ if (ctrl->inband_presence_disabled)
+ pcie_wait_for_presence(pdev);
found = pci_bus_check_dev(ctrl->pcie->port->subordinate,
PCI_DEVFN(0, 0));
@@ -275,15 +311,18 @@
ctrl_dbg(ctrl, "%s: lnk_status = %x\n", __func__, lnk_status);
if ((lnk_status & PCI_EXP_LNKSTA_LT) ||
!(lnk_status & PCI_EXP_LNKSTA_NLW)) {
- ctrl_err(ctrl, "link training error: status %#06x\n",
- lnk_status);
+ ctrl_info(ctrl, "Slot(%s): Cannot train link: status %#06x\n",
+ slot_name(ctrl), lnk_status);
return -1;
}
pcie_update_link_speed(ctrl->pcie->port->subordinate, lnk_status);
- if (!found)
+ if (!found) {
+ ctrl_info(ctrl, "Slot(%s): No device found\n",
+ slot_name(ctrl));
return -1;
+ }
return 0;
}
@@ -524,6 +563,32 @@
PCI_EXP_SLTCTL_PWR_OFF);
}
+static void pciehp_ignore_dpc_link_change(struct controller *ctrl,
+ struct pci_dev *pdev, int irq)
+{
+ /*
+ * Ignore link changes which occurred while waiting for DPC recovery.
+ * Could be several if DPC triggered multiple times consecutively.
+ */
+ synchronize_hardirq(irq);
+ atomic_and(~PCI_EXP_SLTSTA_DLLSC, &ctrl->pending_events);
+ if (pciehp_poll_mode)
+ pcie_capability_write_word(pdev, PCI_EXP_SLTSTA,
+ PCI_EXP_SLTSTA_DLLSC);
+ ctrl_info(ctrl, "Slot(%s): Link Down/Up ignored (recovered by DPC)\n",
+ slot_name(ctrl));
+
+ /*
+ * If the link is unexpectedly down after successful recovery,
+ * the corresponding link change may have been ignored above.
+ * Synthesize it to ensure that it is acted on.
+ */
+ down_read_nested(&ctrl->reset_lock, ctrl->depth);
+ if (!pciehp_check_link_active(ctrl))
+ pciehp_request(ctrl, PCI_EXP_SLTSTA_DLLSC);
+ up_read(&ctrl->reset_lock);
+}
+
static irqreturn_t pciehp_isr(int irq, void *dev_id)
{
struct controller *ctrl = (struct controller *)dev_id;
@@ -577,6 +642,8 @@
*/
if (ctrl->power_fault_detected)
status &= ~PCI_EXP_SLTSTA_PFD;
+ else if (status & PCI_EXP_SLTSTA_PFD)
+ ctrl->power_fault_detected = true;
events |= status;
if (!events) {
@@ -586,7 +653,7 @@
}
if (status) {
- pcie_capability_write_word(pdev, PCI_EXP_SLTSTA, events);
+ pcie_capability_write_word(pdev, PCI_EXP_SLTSTA, status);
/*
* In MSI mode, all event bits must be zero before the port
@@ -660,18 +727,27 @@
}
/* Check Power Fault Detected */
- if ((events & PCI_EXP_SLTSTA_PFD) && !ctrl->power_fault_detected) {
- ctrl->power_fault_detected = 1;
+ if (events & PCI_EXP_SLTSTA_PFD) {
ctrl_err(ctrl, "Slot(%s): Power fault\n", slot_name(ctrl));
pciehp_set_indicators(ctrl, PCI_EXP_SLTCTL_PWR_IND_OFF,
PCI_EXP_SLTCTL_ATTN_IND_ON);
}
/*
+ * Ignore Link Down/Up events caused by Downstream Port Containment
+ * if recovery from the error succeeded.
+ */
+ if ((events & PCI_EXP_SLTSTA_DLLSC) && pci_dpc_recovered(pdev) &&
+ ctrl->state == ON_STATE) {
+ events &= ~PCI_EXP_SLTSTA_DLLSC;
+ pciehp_ignore_dpc_link_change(ctrl, pdev, irq);
+ }
+
+ /*
* Disable requests have higher priority than Presence Detect Changed
* or Data Link Layer State Changed events.
*/
- down_read(&ctrl->reset_lock);
+ down_read_nested(&ctrl->reset_lock, ctrl->depth);
if (events & DISABLE_SLOT)
pciehp_handle_disable_request(ctrl);
else if (events & (PCI_EXP_SLTSTA_PDC | PCI_EXP_SLTSTA_DLLSC))
@@ -805,7 +881,7 @@
if (probe)
return 0;
- down_write(&ctrl->reset_lock);
+ down_write_nested(&ctrl->reset_lock, ctrl->depth);
if (!ATTN_BUTTN(ctrl)) {
ctrl_mask |= PCI_EXP_SLTCTL_PDCE;
@@ -861,10 +937,24 @@
#define FLAG(x, y) (((x) & (y)) ? '+' : '-')
+static inline int pcie_hotplug_depth(struct pci_dev *dev)
+{
+ struct pci_bus *bus = dev->bus;
+ int depth = 0;
+
+ while (bus->parent) {
+ bus = bus->parent;
+ if (bus->self && bus->self->is_hotplug_bridge)
+ depth++;
+ }
+
+ return depth;
+}
+
struct controller *pcie_init(struct pcie_device *dev)
{
struct controller *ctrl;
- u32 slot_cap, link_cap;
+ u32 slot_cap, slot_cap2, link_cap;
u8 poweron;
struct pci_dev *pdev = dev->port;
struct pci_bus *subordinate = pdev->subordinate;
@@ -874,6 +964,7 @@
return NULL;
ctrl->pcie = dev;
+ ctrl->depth = pcie_hotplug_depth(dev->port);
pcie_capability_read_dword(pdev, PCI_EXP_SLTCAP, &slot_cap);
if (pdev->hotplug_user_indicators)
@@ -899,6 +990,16 @@
ctrl->state = list_empty(&subordinate->devices) ? OFF_STATE : ON_STATE;
up_read(&pci_bus_sem);
+ pcie_capability_read_dword(pdev, PCI_EXP_SLTCAP2, &slot_cap2);
+ if (slot_cap2 & PCI_EXP_SLTCAP2_IBPD) {
+ pcie_write_cmd_nowait(ctrl, PCI_EXP_SLTCTL_IBPD_DISABLE,
+ PCI_EXP_SLTCTL_IBPD_DISABLE);
+ ctrl->inband_presence_disabled = 1;
+ }
+
+ if (dmi_first_match(inband_presence_disabled_dmi_table))
+ ctrl->inband_presence_disabled = 1;
+
/* Check if Data Link Layer Link Active Reporting is implemented */
pcie_capability_read_dword(pdev, PCI_EXP_LNKCAP, &link_cap);
@@ -908,7 +1009,7 @@
PCI_EXP_SLTSTA_MRLSC | PCI_EXP_SLTSTA_CC |
PCI_EXP_SLTSTA_DLLSC | PCI_EXP_SLTSTA_PDC);
- ctrl_info(ctrl, "Slot #%d AttnBtn%c PwrCtrl%c MRL%c AttnInd%c PwrInd%c HotPlug%c Surprise%c Interlock%c NoCompl%c LLActRep%c%s\n",
+ ctrl_info(ctrl, "Slot #%d AttnBtn%c PwrCtrl%c MRL%c AttnInd%c PwrInd%c HotPlug%c Surprise%c Interlock%c NoCompl%c IbPresDis%c LLActRep%c%s\n",
(slot_cap & PCI_EXP_SLTCAP_PSN) >> 19,
FLAG(slot_cap, PCI_EXP_SLTCAP_ABP),
FLAG(slot_cap, PCI_EXP_SLTCAP_PCP),
@@ -919,6 +1020,7 @@
FLAG(slot_cap, PCI_EXP_SLTCAP_HPS),
FLAG(slot_cap, PCI_EXP_SLTCAP_EIP),
FLAG(slot_cap, PCI_EXP_SLTCAP_NCCS),
+ FLAG(slot_cap2, PCI_EXP_SLTCAP2_IBPD),
FLAG(link_cap, PCI_EXP_LNKCAP_DLLLARC),
pdev->broken_cmd_compl ? " (with Cmd Compl erratum)" : "");
diff --git a/drivers/pci/hotplug/pnv_php.c b/drivers/pci/hotplug/pnv_php.c
index d7b2b47..0456516 100644
--- a/drivers/pci/hotplug/pnv_php.c
+++ b/drivers/pci/hotplug/pnv_php.c
@@ -18,6 +18,9 @@
#define DRIVER_AUTHOR "Gavin Shan, IBM Corporation"
#define DRIVER_DESC "PowerPC PowerNV PCI Hotplug Driver"
+#define SLOT_WARN(sl, x...) \
+ ((sl)->pdev ? pci_warn((sl)->pdev, x) : dev_warn(&(sl)->bus->dev, x))
+
struct pnv_php_event {
bool added;
struct pnv_php_slot *php_slot;
@@ -151,17 +154,11 @@
static void pnv_php_detach_device_nodes(struct device_node *parent)
{
struct device_node *dn;
- int refcount;
for_each_child_of_node(parent, dn) {
pnv_php_detach_device_nodes(dn);
of_node_put(dn);
- refcount = kref_read(&dn->kobj.kref);
- if (refcount != 1)
- pr_warn("Invalid refcount %d on <%pOF>\n",
- refcount, dn);
-
of_detach_node(dn);
}
}
@@ -271,7 +268,7 @@
ret = pnv_pci_get_device_tree(php_slot->dn->phandle, fdt1, 0x10000);
if (ret) {
- pci_warn(php_slot->pdev, "Error %d getting FDT blob\n", ret);
+ SLOT_WARN(php_slot, "Error %d getting FDT blob\n", ret);
goto free_fdt1;
}
@@ -285,7 +282,7 @@
dt = of_fdt_unflatten_tree(fdt, php_slot->dn, NULL);
if (!dt) {
ret = -EINVAL;
- pci_warn(php_slot->pdev, "Cannot unflatten FDT\n");
+ SLOT_WARN(php_slot, "Cannot unflatten FDT\n");
goto free_fdt;
}
@@ -295,15 +292,15 @@
ret = pnv_php_populate_changeset(&php_slot->ocs, php_slot->dn);
if (ret) {
pnv_php_reverse_nodes(php_slot->dn);
- pci_warn(php_slot->pdev, "Error %d populating changeset\n",
- ret);
+ SLOT_WARN(php_slot, "Error %d populating changeset\n",
+ ret);
goto free_dt;
}
php_slot->dn->child = NULL;
ret = of_changeset_apply(&php_slot->ocs);
if (ret) {
- pci_warn(php_slot->pdev, "Error %d applying changeset\n", ret);
+ SLOT_WARN(php_slot, "Error %d applying changeset\n", ret);
goto destroy_changeset;
}
@@ -342,18 +339,19 @@
ret = pnv_pci_set_power_state(php_slot->id, state, &msg);
if (ret > 0) {
if (be64_to_cpu(msg.params[1]) != php_slot->dn->phandle ||
- be64_to_cpu(msg.params[2]) != state ||
- be64_to_cpu(msg.params[3]) != OPAL_SUCCESS) {
- pci_warn(php_slot->pdev, "Wrong msg (%lld, %lld, %lld)\n",
- be64_to_cpu(msg.params[1]),
- be64_to_cpu(msg.params[2]),
- be64_to_cpu(msg.params[3]));
+ be64_to_cpu(msg.params[2]) != state) {
+ SLOT_WARN(php_slot, "Wrong msg (%lld, %lld, %lld)\n",
+ be64_to_cpu(msg.params[1]),
+ be64_to_cpu(msg.params[2]),
+ be64_to_cpu(msg.params[3]));
return -ENOMSG;
}
+ if (be64_to_cpu(msg.params[3]) != OPAL_SUCCESS) {
+ ret = -ENODEV;
+ goto error;
+ }
} else if (ret < 0) {
- pci_warn(php_slot->pdev, "Error %d powering %s\n",
- ret, (state == OPAL_PCI_SLOT_POWER_ON) ? "on" : "off");
- return ret;
+ goto error;
}
if (state == OPAL_PCI_SLOT_POWER_OFF || state == OPAL_PCI_SLOT_OFFLINE)
@@ -362,6 +360,11 @@
ret = pnv_php_add_devtree(php_slot);
return ret;
+
+error:
+ SLOT_WARN(php_slot, "Error %d powering %s\n",
+ ret, (state == OPAL_PCI_SLOT_POWER_ON) ? "on" : "off");
+ return ret;
}
EXPORT_SYMBOL_GPL(pnv_php_set_slot_power_state);
@@ -378,8 +381,8 @@
*/
ret = pnv_pci_get_power_state(php_slot->id, &power_state);
if (ret) {
- pci_warn(php_slot->pdev, "Error %d getting power status\n",
- ret);
+ SLOT_WARN(php_slot, "Error %d getting power status\n",
+ ret);
} else {
*state = power_state;
}
@@ -402,7 +405,7 @@
*state = presence;
ret = 0;
} else {
- pci_warn(php_slot->pdev, "Error %d getting presence\n", ret);
+ SLOT_WARN(php_slot, "Error %d getting presence\n", ret);
}
return ret;
@@ -566,7 +569,13 @@
struct pnv_php_slot *php_slot = to_pnv_php_slot(slot);
int ret;
- if (php_slot->state != PNV_PHP_STATE_POPULATED)
+ /*
+ * Allow to disable a slot already in the registered state to
+ * cover cases where the slot couldn't be enabled and never
+ * reached the populated state
+ */
+ if (php_slot->state != PNV_PHP_STATE_POPULATED &&
+ php_slot->state != PNV_PHP_STATE_REGISTERED)
return 0;
/* Remove all devices behind the slot */
@@ -675,7 +684,7 @@
ret = pci_hp_register(&php_slot->slot, php_slot->bus,
php_slot->slot_no, php_slot->name);
if (ret) {
- pci_warn(php_slot->pdev, "Error %d registering slot\n", ret);
+ SLOT_WARN(php_slot, "Error %d registering slot\n", ret);
return ret;
}
@@ -728,7 +737,7 @@
/* Enable MSIx */
ret = pci_enable_msix_exact(pdev, &entry, 1);
if (ret) {
- pci_warn(pdev, "Error %d enabling MSIx\n", ret);
+ SLOT_WARN(php_slot, "Error %d enabling MSIx\n", ret);
return ret;
}
@@ -778,8 +787,9 @@
(sts & PCI_EXP_SLTSTA_PDC)) {
ret = pnv_pci_get_presence_state(php_slot->id, &presence);
if (ret) {
- pci_warn(pdev, "PCI slot [%s] error %d getting presence (0x%04x), to retry the operation.\n",
- php_slot->name, ret, sts);
+ SLOT_WARN(php_slot,
+ "PCI slot [%s] error %d getting presence (0x%04x), to retry the operation.\n",
+ php_slot->name, ret, sts);
return IRQ_HANDLED;
}
@@ -809,8 +819,9 @@
*/
event = kzalloc(sizeof(*event), GFP_ATOMIC);
if (!event) {
- pci_warn(pdev, "PCI slot [%s] missed hotplug event 0x%04x\n",
- php_slot->name, sts);
+ SLOT_WARN(php_slot,
+ "PCI slot [%s] missed hotplug event 0x%04x\n",
+ php_slot->name, sts);
return IRQ_HANDLED;
}
@@ -834,7 +845,7 @@
/* Allocate workqueue */
php_slot->wq = alloc_workqueue("pciehp-%s", 0, 0, php_slot->name);
if (!php_slot->wq) {
- pci_warn(pdev, "Cannot alloc workqueue\n");
+ SLOT_WARN(php_slot, "Cannot alloc workqueue\n");
pnv_php_disable_irq(php_slot, true);
return;
}
@@ -858,7 +869,7 @@
php_slot->name, php_slot);
if (ret) {
pnv_php_disable_irq(php_slot, true);
- pci_warn(pdev, "Error %d enabling IRQ %d\n", ret, irq);
+ SLOT_WARN(php_slot, "Error %d enabling IRQ %d\n", ret, irq);
return;
}
@@ -894,7 +905,7 @@
ret = pci_enable_device(pdev);
if (ret) {
- pci_warn(pdev, "Error %d enabling device\n", ret);
+ SLOT_WARN(php_slot, "Error %d enabling device\n", ret);
return;
}
@@ -1009,6 +1020,8 @@
for_each_compatible_node(dn, NULL, "ibm,ioda3-phb")
pnv_php_register(dn);
+ for_each_compatible_node(dn, NULL, "ibm,ioda2-npu2-opencapi-phb")
+ pnv_php_register_one(dn); /* slot directly under the PHB */
return 0;
}
@@ -1021,6 +1034,9 @@
for_each_compatible_node(dn, NULL, "ibm,ioda3-phb")
pnv_php_unregister(dn);
+
+ for_each_compatible_node(dn, NULL, "ibm,ioda2-npu2-opencapi-phb")
+ pnv_php_unregister_one(dn); /* slot directly under the PHB */
}
module_init(pnv_php_init);
diff --git a/drivers/pci/hotplug/rpadlpar_core.c b/drivers/pci/hotplug/rpadlpar_core.c
index 977946e..0a3c80b 100644
--- a/drivers/pci/hotplug/rpadlpar_core.c
+++ b/drivers/pci/hotplug/rpadlpar_core.c
@@ -40,13 +40,13 @@
static struct device_node *find_vio_slot_node(char *drc_name)
{
struct device_node *parent = of_find_node_by_name(NULL, "vdevice");
- struct device_node *dn = NULL;
+ struct device_node *dn;
int rc;
if (!parent)
return NULL;
- while ((dn = of_get_next_child(parent, dn))) {
+ for_each_child_of_node(parent, dn) {
rc = rpaphp_check_drc_props(dn, drc_name, NULL);
if (rc == 0)
break;
@@ -60,10 +60,10 @@
static struct device_node *find_php_slot_pci_node(char *drc_name,
char *drc_type)
{
- struct device_node *np = NULL;
+ struct device_node *np;
int rc;
- while ((np = of_find_node_by_name(np, "pci"))) {
+ for_each_node_by_name(np, "pci") {
rc = rpaphp_check_drc_props(np, drc_name, drc_type);
if (rc == 0)
break;
@@ -140,7 +140,7 @@
struct pci_controller *phb = pdn->phb;
struct pci_dev *dev = NULL;
- eeh_add_device_tree_early(pdn);
+ pseries_eeh_init_edev_recursive(pdn);
/* Add EADS device to PHB bus, adding new entry to bus->devices */
dev = of_create_pci_dev(dn, phb->bus, pdn->devfn);
@@ -352,7 +352,7 @@
* -ENODEV Not a valid drc_name
* -EIO Internal PCI Error
*/
-int dlpar_remove_pci_slot(char *drc_name, struct device_node *dn)
+static int dlpar_remove_pci_slot(char *drc_name, struct device_node *dn)
{
struct pci_bus *bus;
struct slot *slot;
@@ -458,7 +458,7 @@
return (int) (rc != RTAS_UNKNOWN_SERVICE);
}
-int __init rpadlpar_io_init(void)
+static int __init rpadlpar_io_init(void)
{
if (!is_dlpar_capable()) {
@@ -470,7 +470,7 @@
return dlpar_sysfs_init();
}
-void rpadlpar_io_exit(void)
+static void __exit rpadlpar_io_exit(void)
{
dlpar_sysfs_exit();
}
diff --git a/drivers/pci/hotplug/rpaphp_core.c b/drivers/pci/hotplug/rpaphp_core.c
index 32eab17..9887c9d 100644
--- a/drivers/pci/hotplug/rpaphp_core.c
+++ b/drivers/pci/hotplug/rpaphp_core.c
@@ -185,8 +185,8 @@
/* Verify the existence of 'drc_name' and/or 'drc_type' within the
- * current node. First obtain it's my-drc-index property. Next,
- * obtain the DRC info from it's parent. Use the my-drc-index for
+ * current node. First obtain its my-drc-index property. Next,
+ * obtain the DRC info from its parent. Use the my-drc-index for
* correlation, and obtain/validate the requested properties.
*/
@@ -288,11 +288,10 @@
static int is_php_type(char *drc_type)
{
- unsigned long value;
char *endptr;
/* PCI Hotplug nodes have an integer for drc_type */
- value = simple_strtoul(drc_type, &endptr, 10);
+ simple_strtoul(drc_type, &endptr, 10);
if (endptr == drc_type)
return 0;
@@ -330,23 +329,48 @@
return 1;
}
-/**
- * rpaphp_add_slot -- declare a hotplug slot to the hotplug subsystem.
- * @dn: device node of slot
- *
- * This subroutine will register a hotpluggable slot with the
- * PCI hotplug infrastructure. This routine is typically called
- * during boot time, if the hotplug slots are present at boot time,
- * or is called later, by the dlpar add code, if the slot is
- * being dynamically added during runtime.
- *
- * If the device node points at an embedded (built-in) slot, this
- * routine will just return without doing anything, since embedded
- * slots cannot be hotplugged.
- *
- * To remove a slot, it suffices to call rpaphp_deregister_slot().
- */
-int rpaphp_add_slot(struct device_node *dn)
+static int rpaphp_drc_info_add_slot(struct device_node *dn)
+{
+ struct slot *slot;
+ struct property *info;
+ struct of_drc_info drc;
+ char drc_name[MAX_DRC_NAME_LEN];
+ const __be32 *cur;
+ u32 count;
+ int retval = 0;
+
+ info = of_find_property(dn, "ibm,drc-info", NULL);
+ if (!info)
+ return 0;
+
+ cur = of_prop_next_u32(info, NULL, &count);
+ if (cur)
+ cur++;
+ else
+ return 0;
+
+ of_read_drc_info_cell(&info, &cur, &drc);
+ if (!is_php_type(drc.drc_type))
+ return 0;
+
+ sprintf(drc_name, "%s%d", drc.drc_name_prefix, drc.drc_name_suffix_start);
+
+ slot = alloc_slot_struct(dn, drc.drc_index_start, drc_name, drc.drc_power_domain);
+ if (!slot)
+ return -ENOMEM;
+
+ slot->type = simple_strtoul(drc.drc_type, NULL, 10);
+ retval = rpaphp_enable_slot(slot);
+ if (!retval)
+ retval = rpaphp_register_slot(slot);
+
+ if (retval)
+ dealloc_slot_struct(slot);
+
+ return retval;
+}
+
+static int rpaphp_drc_add_slot(struct device_node *dn)
{
struct slot *slot;
int retval = 0;
@@ -354,9 +378,6 @@
const __be32 *indexes, *names, *types, *power_domains;
char *name, *type;
- if (!dn->name || strcmp(dn->name, "pci"))
- return 0;
-
/* If this is not a hotplug slot, return without doing anything. */
if (!is_php_dn(dn, &indexes, &names, &types, &power_domains))
return 0;
@@ -395,6 +416,33 @@
/* XXX FIXME: reports a failure only if last entry in loop failed */
return retval;
}
+
+/**
+ * rpaphp_add_slot -- declare a hotplug slot to the hotplug subsystem.
+ * @dn: device node of slot
+ *
+ * This subroutine will register a hotpluggable slot with the
+ * PCI hotplug infrastructure. This routine is typically called
+ * during boot time, if the hotplug slots are present at boot time,
+ * or is called later, by the dlpar add code, if the slot is
+ * being dynamically added during runtime.
+ *
+ * If the device node points at an embedded (built-in) slot, this
+ * routine will just return without doing anything, since embedded
+ * slots cannot be hotplugged.
+ *
+ * To remove a slot, it suffices to call rpaphp_deregister_slot().
+ */
+int rpaphp_add_slot(struct device_node *dn)
+{
+ if (!of_node_name_eq(dn, "pci"))
+ return 0;
+
+ if (of_find_property(dn, "ibm,drc-info", NULL))
+ return rpaphp_drc_info_add_slot(dn);
+ else
+ return rpaphp_drc_add_slot(dn);
+}
EXPORT_SYMBOL_GPL(rpaphp_add_slot);
static void __exit cleanup_slots(void)
@@ -445,6 +493,8 @@
return retval;
if (state == PRESENT) {
+ pseries_eeh_init_edev_recursive(PCI_DN(slot->dn));
+
pci_lock_rescan_remove();
pci_hp_add_devices(slot->bus);
pci_unlock_rescan_remove();
diff --git a/drivers/pci/hotplug/rpaphp_pci.c b/drivers/pci/hotplug/rpaphp_pci.c
index beca61b..c380bda 100644
--- a/drivers/pci/hotplug/rpaphp_pci.c
+++ b/drivers/pci/hotplug/rpaphp_pci.c
@@ -95,8 +95,10 @@
return -EINVAL;
}
- if (list_empty(&bus->devices))
+ if (list_empty(&bus->devices)) {
+ pseries_eeh_init_edev_recursive(PCI_DN(slot->dn));
pci_hp_add_devices(bus);
+ }
if (!list_empty(&bus->devices)) {
slot->state = CONFIGURED;
diff --git a/drivers/pci/hotplug/s390_pci_hpc.c b/drivers/pci/hotplug/s390_pci_hpc.c
index 30ee722..93174f5 100644
--- a/drivers/pci/hotplug/s390_pci_hpc.c
+++ b/drivers/pci/hotplug/s390_pci_hpc.c
@@ -19,7 +19,6 @@
#include <asm/sclp.h>
#define SLOT_NAME_SIZE 10
-static LIST_HEAD(s390_hotplug_slot_list);
static int zpci_fn_configured(enum zpci_state state)
{
@@ -27,104 +26,90 @@
state == ZPCI_FN_STATE_ONLINE;
}
-/*
- * struct slot - slot information for each *physical* slot
- */
-struct slot {
- struct list_head slot_list;
- struct hotplug_slot hotplug_slot;
- struct zpci_dev *zdev;
-};
-
-static inline struct slot *to_slot(struct hotplug_slot *hotplug_slot)
+static inline int zdev_configure(struct zpci_dev *zdev)
{
- return container_of(hotplug_slot, struct slot, hotplug_slot);
-}
+ int ret = sclp_pci_configure(zdev->fid);
-static inline int slot_configure(struct slot *slot)
-{
- int ret = sclp_pci_configure(slot->zdev->fid);
-
- zpci_dbg(3, "conf fid:%x, rc:%d\n", slot->zdev->fid, ret);
+ zpci_dbg(3, "conf fid:%x, rc:%d\n", zdev->fid, ret);
if (!ret)
- slot->zdev->state = ZPCI_FN_STATE_CONFIGURED;
+ zdev->state = ZPCI_FN_STATE_CONFIGURED;
return ret;
}
-static inline int slot_deconfigure(struct slot *slot)
+static inline int zdev_deconfigure(struct zpci_dev *zdev)
{
- int ret = sclp_pci_deconfigure(slot->zdev->fid);
+ int ret = sclp_pci_deconfigure(zdev->fid);
- zpci_dbg(3, "deconf fid:%x, rc:%d\n", slot->zdev->fid, ret);
+ zpci_dbg(3, "deconf fid:%x, rc:%d\n", zdev->fid, ret);
if (!ret)
- slot->zdev->state = ZPCI_FN_STATE_STANDBY;
+ zdev->state = ZPCI_FN_STATE_STANDBY;
return ret;
}
static int enable_slot(struct hotplug_slot *hotplug_slot)
{
- struct slot *slot = to_slot(hotplug_slot);
+ struct zpci_dev *zdev = container_of(hotplug_slot, struct zpci_dev,
+ hotplug_slot);
+ struct zpci_bus *zbus = zdev->zbus;
int rc;
- if (slot->zdev->state != ZPCI_FN_STATE_STANDBY)
+ if (zdev->state != ZPCI_FN_STATE_STANDBY)
return -EIO;
- rc = slot_configure(slot);
+ rc = zdev_configure(zdev);
if (rc)
return rc;
- rc = zpci_enable_device(slot->zdev);
+ rc = zpci_enable_device(zdev);
if (rc)
goto out_deconfigure;
- pci_scan_slot(slot->zdev->bus, ZPCI_DEVFN);
+ pci_scan_slot(zbus->bus, zdev->devfn);
pci_lock_rescan_remove();
- pci_bus_add_devices(slot->zdev->bus);
+ pci_bus_add_devices(zbus->bus);
pci_unlock_rescan_remove();
return rc;
out_deconfigure:
- slot_deconfigure(slot);
+ zdev_deconfigure(zdev);
return rc;
}
static int disable_slot(struct hotplug_slot *hotplug_slot)
{
- struct slot *slot = to_slot(hotplug_slot);
+ struct zpci_dev *zdev = container_of(hotplug_slot, struct zpci_dev,
+ hotplug_slot);
struct pci_dev *pdev;
int rc;
- if (!zpci_fn_configured(slot->zdev->state))
+ if (!zpci_fn_configured(zdev->state))
return -EIO;
- pdev = pci_get_slot(slot->zdev->bus, ZPCI_DEVFN);
- if (pdev) {
- pci_stop_and_remove_bus_device_locked(pdev);
+ pdev = pci_get_slot(zdev->zbus->bus, zdev->devfn);
+ if (pdev && pci_num_vf(pdev)) {
pci_dev_put(pdev);
+ return -EBUSY;
}
+ pci_dev_put(pdev);
- rc = zpci_disable_device(slot->zdev);
+ zpci_remove_device(zdev, false);
+
+ rc = zpci_disable_device(zdev);
if (rc)
return rc;
- return slot_deconfigure(slot);
+ return zdev_deconfigure(zdev);
}
static int get_power_status(struct hotplug_slot *hotplug_slot, u8 *value)
{
- struct slot *slot = to_slot(hotplug_slot);
+ struct zpci_dev *zdev = container_of(hotplug_slot, struct zpci_dev,
+ hotplug_slot);
- switch (slot->zdev->state) {
- case ZPCI_FN_STATE_STANDBY:
- *value = 0;
- break;
- default:
- *value = 1;
- break;
- }
+ *value = zpci_is_device_configured(zdev) ? 1 : 0;
return 0;
}
@@ -145,44 +130,16 @@
int zpci_init_slot(struct zpci_dev *zdev)
{
char name[SLOT_NAME_SIZE];
- struct slot *slot;
- int rc;
+ struct zpci_bus *zbus = zdev->zbus;
- if (!zdev)
- return 0;
-
- slot = kzalloc(sizeof(*slot), GFP_KERNEL);
- if (!slot)
- goto error;
-
- slot->zdev = zdev;
- slot->hotplug_slot.ops = &s390_hotplug_slot_ops;
+ zdev->hotplug_slot.ops = &s390_hotplug_slot_ops;
snprintf(name, SLOT_NAME_SIZE, "%08x", zdev->fid);
- rc = pci_hp_register(&slot->hotplug_slot, zdev->bus,
- ZPCI_DEVFN, name);
- if (rc)
- goto error_reg;
-
- list_add(&slot->slot_list, &s390_hotplug_slot_list);
- return 0;
-
-error_reg:
- kfree(slot);
-error:
- return -ENOMEM;
+ return pci_hp_register(&zdev->hotplug_slot, zbus->bus,
+ zdev->devfn, name);
}
void zpci_exit_slot(struct zpci_dev *zdev)
{
- struct slot *slot, *next;
-
- list_for_each_entry_safe(slot, next, &s390_hotplug_slot_list,
- slot_list) {
- if (slot->zdev != zdev)
- continue;
- list_del(&slot->slot_list);
- pci_hp_deregister(&slot->hotplug_slot);
- kfree(slot);
- }
+ pci_hp_deregister(&zdev->hotplug_slot);
}
diff --git a/drivers/pci/hotplug/shpchp.h b/drivers/pci/hotplug/shpchp.h
index f7f13ee..6e85885 100644
--- a/drivers/pci/hotplug/shpchp.h
+++ b/drivers/pci/hotplug/shpchp.h
@@ -164,7 +164,7 @@
u8 shpchp_handle_presence_change(u8 hp_slot, struct controller *ctrl);
u8 shpchp_handle_power_fault(u8 hp_slot, struct controller *ctrl);
int shpchp_configure_device(struct slot *p_slot);
-int shpchp_unconfigure_device(struct slot *p_slot);
+void shpchp_unconfigure_device(struct slot *p_slot);
void cleanup_slots(struct controller *ctrl);
void shpchp_queue_pushbutton_work(struct work_struct *work);
int shpc_init(struct controller *ctrl, struct pci_dev *pdev);
diff --git a/drivers/pci/hotplug/shpchp_ctrl.c b/drivers/pci/hotplug/shpchp_ctrl.c
index 078003d..6a6705e 100644
--- a/drivers/pci/hotplug/shpchp_ctrl.c
+++ b/drivers/pci/hotplug/shpchp_ctrl.c
@@ -299,7 +299,6 @@
if (p_slot->status == 0xFF) {
/* power fault occurred, but it was benign */
ctrl_dbg(ctrl, "%s: Power fault\n", __func__);
- rc = POWER_FAILURE;
p_slot->status = 0;
goto err_exit;
}
@@ -341,8 +340,7 @@
u8 hp_slot;
int rc;
- if (shpchp_unconfigure_device(p_slot))
- return(1);
+ shpchp_unconfigure_device(p_slot);
hp_slot = p_slot->device - ctrl->slot_device_offset;
p_slot = shpchp_find_slot(ctrl, hp_slot + ctrl->slot_device_offset);
@@ -643,7 +641,7 @@
switch (p_slot->state) {
case BLINKINGON_STATE:
cancel_delayed_work(&p_slot->work);
- /* fall through */
+ fallthrough;
case STATIC_STATE:
p_slot->state = POWERON_STATE;
mutex_unlock(&p_slot->lock);
@@ -679,7 +677,7 @@
switch (p_slot->state) {
case BLINKINGOFF_STATE:
cancel_delayed_work(&p_slot->work);
- /* fall through */
+ fallthrough;
case STATIC_STATE:
p_slot->state = POWEROFF_STATE;
mutex_unlock(&p_slot->lock);
diff --git a/drivers/pci/hotplug/shpchp_pci.c b/drivers/pci/hotplug/shpchp_pci.c
index 1157013..36db0c3 100644
--- a/drivers/pci/hotplug/shpchp_pci.c
+++ b/drivers/pci/hotplug/shpchp_pci.c
@@ -61,9 +61,8 @@
return ret;
}
-int shpchp_unconfigure_device(struct slot *p_slot)
+void shpchp_unconfigure_device(struct slot *p_slot)
{
- int rc = 0;
struct pci_bus *parent = p_slot->ctrl->pci_dev->subordinate;
struct pci_dev *dev, *temp;
struct controller *ctrl = p_slot->ctrl;
@@ -83,6 +82,4 @@
}
pci_unlock_rescan_remove();
- return rc;
}
-