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path: root/drivers/pci/pci.c
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Diffstat (limited to 'drivers/pci/pci.c')
-rw-r--r--drivers/pci/pci.c34
1 files changed, 27 insertions, 7 deletions
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index 0bc27e05901..315fea47e78 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -29,7 +29,17 @@ const char *pci_power_names[] = {
29}; 29};
30EXPORT_SYMBOL_GPL(pci_power_names); 30EXPORT_SYMBOL_GPL(pci_power_names);
31 31
32unsigned int pci_pm_d3_delay = PCI_PM_D3_WAIT; 32unsigned int pci_pm_d3_delay;
33
34static void pci_dev_d3_sleep(struct pci_dev *dev)
35{
36 unsigned int delay = dev->d3_delay;
37
38 if (delay < pci_pm_d3_delay)
39 delay = pci_pm_d3_delay;
40
41 msleep(delay);
42}
33 43
34#ifdef CONFIG_PCI_DOMAINS 44#ifdef CONFIG_PCI_DOMAINS
35int pci_domains_supported = 1; 45int pci_domains_supported = 1;
@@ -522,7 +532,7 @@ static int pci_raw_set_power_state(struct pci_dev *dev, pci_power_t state)
522 /* Mandatory power management transition delays */ 532 /* Mandatory power management transition delays */
523 /* see PCI PM 1.1 5.6.1 table 18 */ 533 /* see PCI PM 1.1 5.6.1 table 18 */
524 if (state == PCI_D3hot || dev->current_state == PCI_D3hot) 534 if (state == PCI_D3hot || dev->current_state == PCI_D3hot)
525 msleep(pci_pm_d3_delay); 535 pci_dev_d3_sleep(dev);
526 else if (state == PCI_D2 || dev->current_state == PCI_D2) 536 else if (state == PCI_D2 || dev->current_state == PCI_D2)
527 udelay(PCI_PM_D2_DELAY); 537 udelay(PCI_PM_D2_DELAY);
528 538
@@ -1153,11 +1163,11 @@ pci_disable_device(struct pci_dev *dev)
1153 1163
1154/** 1164/**
1155 * pcibios_set_pcie_reset_state - set reset state for device dev 1165 * pcibios_set_pcie_reset_state - set reset state for device dev
1156 * @dev: the PCI-E device reset 1166 * @dev: the PCIe device reset
1157 * @state: Reset state to enter into 1167 * @state: Reset state to enter into
1158 * 1168 *
1159 * 1169 *
1160 * Sets the PCI-E reset state for the device. This is the default 1170 * Sets the PCIe reset state for the device. This is the default
1161 * implementation. Architecture implementations can override this. 1171 * implementation. Architecture implementations can override this.
1162 */ 1172 */
1163int __attribute__ ((weak)) pcibios_set_pcie_reset_state(struct pci_dev *dev, 1173int __attribute__ ((weak)) pcibios_set_pcie_reset_state(struct pci_dev *dev,
@@ -1168,7 +1178,7 @@ int __attribute__ ((weak)) pcibios_set_pcie_reset_state(struct pci_dev *dev,
1168 1178
1169/** 1179/**
1170 * pci_set_pcie_reset_state - set reset state for device dev 1180 * pci_set_pcie_reset_state - set reset state for device dev
1171 * @dev: the PCI-E device reset 1181 * @dev: the PCIe device reset
1172 * @state: Reset state to enter into 1182 * @state: Reset state to enter into
1173 * 1183 *
1174 * 1184 *
@@ -1409,6 +1419,7 @@ void pci_pm_init(struct pci_dev *dev)
1409 } 1419 }
1410 1420
1411 dev->pm_cap = pm; 1421 dev->pm_cap = pm;
1422 dev->d3_delay = PCI_PM_D3_WAIT;
1412 1423
1413 dev->d1_support = false; 1424 dev->d1_support = false;
1414 dev->d2_support = false; 1425 dev->d2_support = false;
@@ -2247,12 +2258,12 @@ static int pci_pm_reset(struct pci_dev *dev, int probe)
2247 csr &= ~PCI_PM_CTRL_STATE_MASK; 2258 csr &= ~PCI_PM_CTRL_STATE_MASK;
2248 csr |= PCI_D3hot; 2259 csr |= PCI_D3hot;
2249 pci_write_config_word(dev, dev->pm_cap + PCI_PM_CTRL, csr); 2260 pci_write_config_word(dev, dev->pm_cap + PCI_PM_CTRL, csr);
2250 msleep(pci_pm_d3_delay); 2261 pci_dev_d3_sleep(dev);
2251 2262
2252 csr &= ~PCI_PM_CTRL_STATE_MASK; 2263 csr &= ~PCI_PM_CTRL_STATE_MASK;
2253 csr |= PCI_D0; 2264 csr |= PCI_D0;
2254 pci_write_config_word(dev, dev->pm_cap + PCI_PM_CTRL, csr); 2265 pci_write_config_word(dev, dev->pm_cap + PCI_PM_CTRL, csr);
2255 msleep(pci_pm_d3_delay); 2266 pci_dev_d3_sleep(dev);
2256 2267
2257 return 0; 2268 return 0;
2258} 2269}
@@ -2296,6 +2307,10 @@ static int pci_dev_reset(struct pci_dev *dev, int probe)
2296 down(&dev->dev.sem); 2307 down(&dev->dev.sem);
2297 } 2308 }
2298 2309
2310 rc = pci_dev_specific_reset(dev, probe);
2311 if (rc != -ENOTTY)
2312 goto done;
2313
2299 rc = pcie_flr(dev, probe); 2314 rc = pcie_flr(dev, probe);
2300 if (rc != -ENOTTY) 2315 if (rc != -ENOTTY)
2301 goto done; 2316 goto done;
@@ -2779,6 +2794,11 @@ int __attribute__ ((weak)) pci_ext_cfg_avail(struct pci_dev *dev)
2779 return 1; 2794 return 1;
2780} 2795}
2781 2796
2797void __weak pci_fixup_cardbus(struct pci_bus *bus)
2798{
2799}
2800EXPORT_SYMBOL(pci_fixup_cardbus);
2801
2782static int __init pci_setup(char *str) 2802static int __init pci_setup(char *str)
2783{ 2803{
2784 while (str) { 2804 while (str) {