mirrors
/
linux-stable
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
1
0
Fork 0
Code Issues Releases Wiki Activity

powerpc/eeh: Remove unnecessary config_addr from eeh_dev 

The eeh_dev struct hold a config space address of an associated node
and the very same address is also stored in the pci_dn struct which
is always present during the eeh_dev lifetime.

This uses bus:devfn directly from pci_dn instead of cached and packed
config_addr.

Since config_addr is made from device's bus:dev.fn, there is no point
in keeping it in the debugfs either so remove that too.

Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Alexey Kardashevskiy 2017-08-29 17:34:02 +10:00 committed by Michael Ellerman
parent 69672bd748
commit 405b33a76d
5 changed files with 26 additions and 31 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
arch/powerpc/include/asm/eeh.h
View File

@ -131,7 +131,6 @@ static inline bool eeh_pe_passed(struct eeh_pe *pe)
struct eeh_dev {
int mode; /* EEH mode */
int class_code; /* Class code of the device */
int config_addr; /* Config address */
int pe_config_addr; /* PE config address */
u32 config_space[16]; /* Saved PCI config space */
int pcix_cap; /* Saved PCIx capability */

42
arch/powerpc/kernel/eeh_pe.c
View File

@ -340,11 +340,12 @@ int eeh_add_to_parent_pe(struct eeh_dev *edev)
{
struct eeh_pe *pe, *parent;
struct pci_dn *pdn = eeh_dev_to_pdn(edev);
int config_addr = (pdn->busno << 8) | (pdn->devfn);
/* Check if the PE number is valid */
if (!eeh_has_flag(EEH_VALID_PE_ZERO) && !edev->pe_config_addr) {
pr_err("%s: Invalid PE#0 for edev 0x%x on PHB#%x\n",
__func__, edev->config_addr, pdn->phb->global_number);
__func__, config_addr, pdn->phb->global_number);
return -EINVAL;
}
@ -354,8 +355,7 @@ int eeh_add_to_parent_pe(struct eeh_dev *edev)
* PE should be composed of PCI bus and its subordinate
* components.
*/
pe = eeh_pe_get(pdn->phb, edev->pe_config_addr,
edev->config_addr);
pe = eeh_pe_get(pdn->phb, edev->pe_config_addr, config_addr);
if (pe && !(pe->type & EEH_PE_INVALID)) {
/* Mark the PE as type of PCI bus */
pe->type = EEH_PE_BUS;
@ -365,10 +365,10 @@ int eeh_add_to_parent_pe(struct eeh_dev *edev)
list_add_tail(&edev->list, &pe->edevs);
pr_debug("EEH: Add %04x:%02x:%02x.%01x to Bus PE#%x\n",
pdn->phb->global_number,
edev->config_addr >> 8,
PCI_SLOT(edev->config_addr & 0xFF),
PCI_FUNC(edev->config_addr & 0xFF),
pe->addr);
pdn->busno,
PCI_SLOT(pdn->devfn),
PCI_FUNC(pdn->devfn),
pe->addr);
return 0;
} else if (pe && (pe->type & EEH_PE_INVALID)) {
list_add_tail(&edev->list, &pe->edevs);
@ -388,10 +388,10 @@ int eeh_add_to_parent_pe(struct eeh_dev *edev)
pr_debug("EEH: Add %04x:%02x:%02x.%01x to Device "
"PE#%x, Parent PE#%x\n",
pdn->phb->global_number,
edev->config_addr >> 8,
PCI_SLOT(edev->config_addr & 0xFF),
PCI_FUNC(edev->config_addr & 0xFF),
pe->addr, pe->parent->addr);
pdn->busno,
PCI_SLOT(pdn->devfn),
PCI_FUNC(pdn->devfn),
pe->addr, pe->parent->addr);
return 0;
}
@ -405,7 +405,7 @@ int eeh_add_to_parent_pe(struct eeh_dev *edev)
return -ENOMEM;
}
pe->addr = edev->pe_config_addr;
pe->config_addr = edev->config_addr;
pe->config_addr = config_addr;
/*
* Put the new EEH PE into hierarchy tree. If the parent
@ -436,9 +436,9 @@ int eeh_add_to_parent_pe(struct eeh_dev *edev)
pr_debug("EEH: Add %04x:%02x:%02x.%01x to "
"Device PE#%x, Parent PE#%x\n",
pdn->phb->global_number,
edev->config_addr >> 8,
PCI_SLOT(edev->config_addr & 0xFF),
PCI_FUNC(edev->config_addr & 0xFF),
pdn->busno,
PCI_SLOT(pdn->devfn),
PCI_FUNC(pdn->devfn),
pe->addr, pe->parent->addr);
return 0;
@ -462,9 +462,9 @@ int eeh_rmv_from_parent_pe(struct eeh_dev *edev)
if (!edev->pe) {
pr_debug("%s: No PE found for device %04x:%02x:%02x.%01x\n",
__func__, pdn->phb->global_number,
edev->config_addr >> 8,
PCI_SLOT(edev->config_addr & 0xFF),
PCI_FUNC(edev->config_addr & 0xFF));
pdn->busno,
PCI_SLOT(pdn->devfn),
PCI_FUNC(pdn->devfn));
return -EEXIST;
}
@ -725,9 +725,9 @@ static void eeh_bridge_check_link(struct eeh_dev *edev)
pr_debug("%s: Check PCIe link for %04x:%02x:%02x.%01x ...\n",
__func__, pdn->phb->global_number,
edev->config_addr >> 8,
PCI_SLOT(edev->config_addr & 0xFF),
PCI_FUNC(edev->config_addr & 0xFF));
pdn->busno,
PCI_SLOT(pdn->devfn),
PCI_FUNC(pdn->devfn));
/* Check slot status */
cap = edev->pcie_cap;

3
arch/powerpc/kernel/eeh_sysfs.c
View File

@ -51,7 +51,6 @@ static ssize_t eeh_show_##_name(struct device *dev, \
static DEVICE_ATTR(_name, S_IRUGO, eeh_show_##_name, NULL);
EEH_SHOW_ATTR(eeh_mode, mode, "0x%x");
EEH_SHOW_ATTR(eeh_config_addr, config_addr, "0x%x");
EEH_SHOW_ATTR(eeh_pe_config_addr, pe_config_addr, "0x%x");
static ssize_t eeh_pe_state_show(struct device *dev,
@ -103,7 +102,6 @@ void eeh_sysfs_add_device(struct pci_dev *pdev)
return;
rc += device_create_file(&pdev->dev, &dev_attr_eeh_mode);
rc += device_create_file(&pdev->dev, &dev_attr_eeh_config_addr);
rc += device_create_file(&pdev->dev, &dev_attr_eeh_pe_config_addr);
rc += device_create_file(&pdev->dev, &dev_attr_eeh_pe_state);
@ -128,7 +126,6 @@ void eeh_sysfs_remove_device(struct pci_dev *pdev)
}
device_remove_file(&pdev->dev, &dev_attr_eeh_mode);
device_remove_file(&pdev->dev, &dev_attr_eeh_config_addr);
device_remove_file(&pdev->dev, &dev_attr_eeh_pe_config_addr);
device_remove_file(&pdev->dev, &dev_attr_eeh_pe_state);

9
arch/powerpc/platforms/powernv/eeh-powernv.c
View File

@ -352,6 +352,7 @@ static void *pnv_eeh_probe(struct pci_dn *pdn, void *data)
struct eeh_dev *edev = pdn_to_eeh_dev(pdn);
uint32_t pcie_flags;
int ret;
int config_addr = (pdn->busno << 8) | (pdn->devfn);
/*
* When probing the root bridge, which doesn't have any
@ -386,8 +387,7 @@ static void *pnv_eeh_probe(struct pci_dn *pdn, void *data)
}
}
edev->config_addr = (pdn->busno << 8) | (pdn->devfn);
edev->pe_config_addr = phb->ioda.pe_rmap[edev->config_addr];
edev->pe_config_addr = phb->ioda.pe_rmap[config_addr];
/* Create PE */
ret = eeh_add_to_parent_pe(edev);
@ -1699,6 +1699,7 @@ static int pnv_eeh_restore_config(struct pci_dn *pdn)
struct eeh_dev *edev = pdn_to_eeh_dev(pdn);
struct pnv_phb *phb;
s64 ret;
int config_addr = (pdn->busno << 8) | (pdn->devfn);
if (!edev)
return -EEXIST;
@ -1715,12 +1716,12 @@ static int pnv_eeh_restore_config(struct pci_dn *pdn)
} else {
phb = pdn->phb->private_data;
ret = opal_pci_reinit(phb->opal_id,
OPAL_REINIT_PCI_DEV, edev->config_addr);
OPAL_REINIT_PCI_DEV, config_addr);
}
if (ret) {
pr_warn("%s: Can't reinit PCI dev 0x%x (%lld)\n",
__func__, edev->config_addr, ret);
__func__, config_addr, ret);
return -EIO;
}

2
arch/powerpc/platforms/pseries/eeh_pseries.c
View File

@ -254,7 +254,6 @@ static void *pseries_eeh_probe(struct pci_dn *pdn, void *data)
ret = eeh_ops->set_option(&pe, EEH_OPT_ENABLE);
if (!ret) {
/* Retrieve PE address */
edev->config_addr = (pdn->busno << 16) | (pdn->devfn << 8);
edev->pe_config_addr = eeh_ops->get_pe_addr(&pe);
pe.addr = edev->pe_config_addr;
@ -279,7 +278,6 @@ static void *pseries_eeh_probe(struct pci_dn *pdn, void *data)
/* This device doesn't support EEH, but it may have an
* EEH parent, in which case we mark it as supported.
*/
edev->config_addr = pdn_to_eeh_dev(pdn->parent)->config_addr;
edev->pe_config_addr = pdn_to_eeh_dev(pdn->parent)->pe_config_addr;
eeh_add_to_parent_pe(edev);
}