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15  *      - Redistributions of source code must retain the above
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20  *        copyright notice, this list of conditions and the following
24  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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44 	void __iomem *reset;  in mlx4_reset()  local
65 	 * Reset the chip.  This is somewhat ugly because we have to  in mlx4_reset()
66 	 * save off the PCI header before reset and then restore it  in mlx4_reset()
74 		err = -ENOMEM;  in mlx4_reset()
76 		goto out;  in mlx4_reset()
79 	pcie_cap = pci_pcie_cap(dev->persist->pdev);  in mlx4_reset()
84 		if (pci_read_config_dword(dev->persist->pdev, i * 4,  in mlx4_reset()
86 			err = -ENODEV;  in mlx4_reset()
88 			goto out;  in mlx4_reset()
92 	reset = ioremap(pci_resource_start(dev->persist->pdev, 0) +  in mlx4_reset()
95 	if (!reset) {  in mlx4_reset()
96 		err = -ENOMEM;  in mlx4_reset()
97 		mlx4_err(dev, "Couldn't map HCA reset register, aborting\n");  in mlx4_reset()
98 		goto out;  in mlx4_reset()
101 	/* grab HW semaphore to lock out flash updates */  in mlx4_reset()
104 		sem = readl(reset + MLX4_SEM_OFFSET);  in mlx4_reset()
113 		err = -EAGAIN;  in mlx4_reset()
114 		iounmap(reset);  in mlx4_reset()
115 		goto out;  in mlx4_reset()
118 	/* actually hit reset */  in mlx4_reset()
119 	writel(MLX4_RESET_VALUE, reset + MLX4_RESET_OFFSET);  in mlx4_reset()
120 	iounmap(reset);  in mlx4_reset()
127 		if (!pci_read_config_word(dev->persist->pdev, PCI_VENDOR_ID,  in mlx4_reset()
135 		err = -ENODEV;  in mlx4_reset()
136 		mlx4_err(dev, "PCI device did not come back after reset, aborting\n");  in mlx4_reset()
137 		goto out;  in mlx4_reset()
143 		if (pcie_capability_write_word(dev->persist->pdev,  in mlx4_reset()
146 			err = -ENODEV;  in mlx4_reset()
148 			goto out;  in mlx4_reset()
151 		if (pcie_capability_write_word(dev->persist->pdev,  in mlx4_reset()
154 			err = -ENODEV;  in mlx4_reset()
156 			goto out;  in mlx4_reset()
164 		if (pci_write_config_dword(dev->persist->pdev, i * 4,  in mlx4_reset()
166 			err = -ENODEV;  in mlx4_reset()
169 			goto out;  in mlx4_reset()
173 	if (pci_write_config_dword(dev->persist->pdev, PCI_COMMAND,  in mlx4_reset()
175 		err = -ENODEV;  in mlx4_reset()
177 		goto out;  in mlx4_reset()
180 out:  in mlx4_reset()