X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=drivers%2Fmessage%2Fi2o%2Fpci.c;h=4f1515cae5dc94ceb589d74f3c58a3327823efe5;hb=43bc926fffd92024b46cafaf7350d669ba9ca884;hp=9ee58b6cf55b6367bfbbcebb1454d7895c7439e9;hpb=a2c21200f1c81b08cb55e417b68150bba439b646;p=linux-2.6.git diff --git a/drivers/message/i2o/pci.c b/drivers/message/i2o/pci.c index 9ee58b6cf..4f1515cae 100644 --- a/drivers/message/i2o/pci.c +++ b/drivers/message/i2o/pci.c @@ -30,52 +30,19 @@ #include #include #include +#include "core.h" -#ifdef CONFIG_MTRR -#include -#endif // CONFIG_MTRR - -/* Module internal functions from other sources */ -extern struct i2o_controller *i2o_iop_alloc(void); -extern void i2o_iop_free(struct i2o_controller *); - -extern int i2o_iop_add(struct i2o_controller *); -extern void i2o_iop_remove(struct i2o_controller *); - -extern int i2o_driver_dispatch(struct i2o_controller *, u32, - struct i2o_message *); +#define OSM_DESCRIPTION "I2O-subsystem" /* PCI device id table for all I2O controllers */ static struct pci_device_id __devinitdata i2o_pci_ids[] = { {PCI_DEVICE_CLASS(PCI_CLASS_INTELLIGENT_I2O << 8, 0xffff00)}, {PCI_DEVICE(PCI_VENDOR_ID_DPT, 0xa511)}, + {.vendor = PCI_VENDOR_ID_INTEL,.device = 0x1962, + .subvendor = PCI_VENDOR_ID_PROMISE,.subdevice = PCI_ANY_ID}, {0} }; -/** - * i2o_dma_realloc - Realloc DMA memory - * @dev: struct device pointer to the PCI device of the I2O controller - * @addr: pointer to a i2o_dma struct DMA buffer - * @len: new length of memory - * @gfp_mask: GFP mask - * - * If there was something allocated in the addr, free it first. If len > 0 - * than try to allocate it and write the addresses back to the addr - * structure. If len == 0 set the virtual address to NULL. - * - * Returns the 0 on success or negative error code on failure. - */ -int i2o_dma_realloc(struct device *dev, struct i2o_dma *addr, size_t len, - unsigned int gfp_mask) -{ - i2o_dma_free(dev, addr); - - if (len) - return i2o_dma_alloc(dev, addr, len, gfp_mask); - - return 0; -}; - /** * i2o_pci_free - Frees the DMA memory for the I2O controller * @c: I2O controller to free @@ -83,7 +50,7 @@ int i2o_dma_realloc(struct device *dev, struct i2o_dma *addr, size_t len, * Remove all allocated DMA memory and unmap memory IO regions. If MTRR * is enabled, also remove it again. */ -static void __devexit i2o_pci_free(struct i2o_controller *c) +static void i2o_pci_free(struct i2o_controller *c) { struct device *dev; @@ -91,24 +58,18 @@ static void __devexit i2o_pci_free(struct i2o_controller *c) i2o_dma_free(dev, &c->out_queue); i2o_dma_free(dev, &c->status_block); - if (c->lct) - kfree(c->lct); + kfree(c->lct); i2o_dma_free(dev, &c->dlct); i2o_dma_free(dev, &c->hrt); i2o_dma_free(dev, &c->status); -#ifdef CONFIG_MTRR - if (c->mtrr_reg0 >= 0) - mtrr_del(c->mtrr_reg0, 0, 0); - if (c->mtrr_reg1 >= 0) - mtrr_del(c->mtrr_reg1, 0, 0); -#endif - if (c->raptor && c->in_queue.virt) iounmap(c->in_queue.virt); if (c->base.virt) iounmap(c->base.virt); + + pci_release_regions(c->pdev); } /** @@ -127,6 +88,11 @@ static int __devinit i2o_pci_alloc(struct i2o_controller *c) struct device *dev = &pdev->dev; int i; + if (pci_request_regions(pdev, OSM_DESCRIPTION)) { + printk(KERN_ERR "%s: device already claimed\n", c->name); + return -ENODEV; + } + for (i = 0; i < 6; i++) { /* Skip I/O spaces */ if (!(pci_resource_flags(pdev, i) & IORESOURCE_IO)) { @@ -138,13 +104,13 @@ static int __devinit i2o_pci_alloc(struct i2o_controller *c) * If we know what card it is, set the size * correctly. Code is taken from dpt_i2o.c */ - if(pdev->device == 0xa501) { - if(pdev->subsystem_device >= 0xc032 && - pdev->subsystem_device <= 0xc03b) { - if(c->base.len > 0x400000) + if (pdev->device == 0xa501) { + if (pdev->subsystem_device >= 0xc032 && + pdev->subsystem_device <= 0xc03b) { + if (c->base.len > 0x400000) c->base.len = 0x400000; } else { - if(c->base.len > 0x100000) + if (c->base.len > 0x100000) c->base.len = 0x100000; } } @@ -159,79 +125,68 @@ static int __devinit i2o_pci_alloc(struct i2o_controller *c) } if (i == 6) { - printk(KERN_ERR "i2o: I2O controller has no memory regions" - " defined.\n"); + printk(KERN_ERR "%s: I2O controller has no memory regions" + " defined.\n", c->name); i2o_pci_free(c); return -EINVAL; } /* Map the I2O controller */ if (c->raptor) { - printk(KERN_INFO "i2o: PCI I2O controller\n"); + printk(KERN_INFO "%s: PCI I2O controller\n", c->name); printk(KERN_INFO " BAR0 at 0x%08lX size=%ld\n", (unsigned long)c->base.phys, (unsigned long)c->base.len); printk(KERN_INFO " BAR1 at 0x%08lX size=%ld\n", (unsigned long)c->in_queue.phys, (unsigned long)c->in_queue.len); } else - printk(KERN_INFO "i2o: PCI I2O controller at %08lX size=%ld\n", - (unsigned long)c->base.phys, (unsigned long)c->base.len); + printk(KERN_INFO "%s: PCI I2O controller at %08lX size=%ld\n", + c->name, (unsigned long)c->base.phys, + (unsigned long)c->base.len); - c->base.virt = ioremap(c->base.phys, c->base.len); + c->base.virt = ioremap_nocache(c->base.phys, c->base.len); if (!c->base.virt) { - printk(KERN_ERR "i2o: Unable to map controller.\n"); + printk(KERN_ERR "%s: Unable to map controller.\n", c->name); + i2o_pci_free(c); return -ENOMEM; } if (c->raptor) { - c->in_queue.virt = ioremap(c->in_queue.phys, c->in_queue.len); + c->in_queue.virt = + ioremap_nocache(c->in_queue.phys, c->in_queue.len); if (!c->in_queue.virt) { - printk(KERN_ERR "i2o: Unable to map controller.\n"); + printk(KERN_ERR "%s: Unable to map controller.\n", + c->name); i2o_pci_free(c); return -ENOMEM; } } else c->in_queue = c->base; - c->irq_mask = c->base.virt + 0x34; - c->post_port = c->base.virt + 0x40; - c->reply_port = c->base.virt + 0x44; - -#ifdef CONFIG_MTRR - /* Enable Write Combining MTRR for IOP's memory region */ - c->mtrr_reg0 = mtrr_add(c->in_queue.phys, c->in_queue.len, - MTRR_TYPE_WRCOMB, 1); - c->mtrr_reg1 = -1; - - if (c->mtrr_reg0 < 0) - printk(KERN_WARNING "i2o: could not enable write combining " - "MTRR\n"); - else - printk(KERN_INFO "i2o: using write combining MTRR\n"); - - /* - * If it is an INTEL i960 I/O processor then set the first 64K to - * Uncacheable since the region contains the messaging unit which - * shouldn't be cached. - */ - if ((pdev->vendor == PCI_VENDOR_ID_INTEL || - pdev->vendor == PCI_VENDOR_ID_DPT) && !c->raptor) { - printk(KERN_INFO "i2o: MTRR workaround for Intel i960 processor" - "\n"); - c->mtrr_reg1 = mtrr_add(c->base.phys, 0x10000, - MTRR_TYPE_UNCACHABLE, 1); - - if (c->mtrr_reg1 < 0) { - printk(KERN_WARNING "i2o_pci: Error in setting " - "MTRR_TYPE_UNCACHABLE\n"); - mtrr_del(c->mtrr_reg0, c->in_queue.phys, - c->in_queue.len); - c->mtrr_reg0 = -1; + c->irq_status = c->base.virt + I2O_IRQ_STATUS; + c->irq_mask = c->base.virt + I2O_IRQ_MASK; + c->in_port = c->base.virt + I2O_IN_PORT; + c->out_port = c->base.virt + I2O_OUT_PORT; + + /* Motorola/Freescale chip does not follow spec */ + if (pdev->vendor == PCI_VENDOR_ID_MOTOROLA && pdev->device == 0x18c0) { + /* Check if CPU is enabled */ + if (be32_to_cpu(readl(c->base.virt + 0x10000)) & 0x10000000) { + printk(KERN_INFO "%s: MPC82XX needs CPU running to " + "service I2O.\n", c->name); + i2o_pci_free(c); + return -ENODEV; + } else { + c->irq_status += I2O_MOTOROLA_PORT_OFFSET; + c->irq_mask += I2O_MOTOROLA_PORT_OFFSET; + c->in_port += I2O_MOTOROLA_PORT_OFFSET; + c->out_port += I2O_MOTOROLA_PORT_OFFSET; + printk(KERN_INFO "%s: MPC82XX workarounds activated.\n", + c->name); } } -#endif - if (i2o_dma_alloc(dev, &c->status, 4, GFP_KERNEL)) { + if (i2o_dma_alloc(dev, &c->status, 8, GFP_KERNEL)) { i2o_pci_free(c); return -ENOMEM; } @@ -252,7 +207,10 @@ static int __devinit i2o_pci_alloc(struct i2o_controller *c) return -ENOMEM; } - if (i2o_dma_alloc(dev, &c->out_queue, MSG_POOL_SIZE, GFP_KERNEL)) { + if (i2o_dma_alloc + (dev, &c->out_queue, + I2O_MAX_OUTBOUND_MSG_FRAMES * I2O_OUTBOUND_MSG_FRAME_SIZE * + sizeof(u32), GFP_KERNEL)) { i2o_pci_free(c); return -ENOMEM; } @@ -274,56 +232,30 @@ static int __devinit i2o_pci_alloc(struct i2o_controller *c) static irqreturn_t i2o_pci_interrupt(int irq, void *dev_id, struct pt_regs *r) { struct i2o_controller *c = dev_id; - struct device *dev = &c->pdev->dev; - struct i2o_message *m; - u32 mv; - u32 *msg; - - /* - * Old 960 steppings had a bug in the I2O unit that caused - * the queue to appear empty when it wasn't. - */ - mv = I2O_REPLY_READ32(c); - if (mv == I2O_QUEUE_EMPTY) { - mv = I2O_REPLY_READ32(c); - if (unlikely(mv == I2O_QUEUE_EMPTY)) { - return IRQ_NONE; - } else - pr_debug("960 bug detected\n"); - } - - while (mv != I2O_QUEUE_EMPTY) { - /* - * Map the message from the page frame map to kernel virtual. - * Because bus_to_virt is deprecated, we have calculate the - * location by ourself! - */ - m = (struct i2o_message *)(mv - - (unsigned long)c->out_queue.phys + - (unsigned long)c->out_queue.virt); - - msg = (u32 *) m; - - /* - * Ensure this message is seen coherently but cachably by - * the processor - */ - dma_sync_single_for_cpu(dev, c->out_queue.phys, MSG_FRAME_SIZE, - PCI_DMA_FROMDEVICE); + u32 m; + irqreturn_t rc = IRQ_NONE; + + while (readl(c->irq_status) & I2O_IRQ_OUTBOUND_POST) { + m = readl(c->out_port); + if (m == I2O_QUEUE_EMPTY) { + /* + * Old 960 steppings had a bug in the I2O unit that + * caused the queue to appear empty when it wasn't. + */ + m = readl(c->out_port); + if (unlikely(m == I2O_QUEUE_EMPTY)) + break; + } /* dispatch it */ - if (i2o_driver_dispatch(c, mv, m)) + if (i2o_driver_dispatch(c, m)) /* flush it if result != 0 */ - i2o_flush_reply(c, mv); + i2o_flush_reply(c, m); - /* - * That 960 bug again... - */ - mv = I2O_REPLY_READ32(c); - if (mv == I2O_QUEUE_EMPTY) - mv = I2O_REPLY_READ32(c); + rc = IRQ_HANDLED; } - return IRQ_HANDLED; + + return rc; } /** @@ -339,7 +271,7 @@ static int i2o_pci_irq_enable(struct i2o_controller *c) struct pci_dev *pdev = c->pdev; int rc; - I2O_IRQ_WRITE32(c, 0xffffffff); + writel(0xffffffff, c->irq_mask); if (pdev->irq) { rc = request_irq(pdev->irq, i2o_pci_interrupt, SA_SHIRQ, @@ -351,7 +283,7 @@ static int i2o_pci_irq_enable(struct i2o_controller *c) } } - I2O_IRQ_WRITE32(c, 0x00000000); + writel(0x00000000, c->irq_mask); printk(KERN_INFO "%s: Installed at IRQ %d\n", c->name, pdev->irq); @@ -366,7 +298,7 @@ static int i2o_pci_irq_enable(struct i2o_controller *c) */ static void i2o_pci_irq_disable(struct i2o_controller *c) { - I2O_IRQ_WRITE32(c, 0xffffffff); + writel(0xffffffff, c->irq_mask); if (c->pdev->irq > 0) free_irq(c->pdev->irq, c); @@ -388,28 +320,27 @@ static int __devinit i2o_pci_probe(struct pci_dev *pdev, { struct i2o_controller *c; int rc; + struct pci_dev *i960 = NULL; + int enabled = pdev->is_enabled; printk(KERN_INFO "i2o: Checking for PCI I2O controllers...\n"); if ((pdev->class & 0xff) > 1) { - printk(KERN_WARNING "i2o: I2O controller found but does not " - "support I2O 1.5 (skipping).\n"); + printk(KERN_WARNING "i2o: %s does not support I2O 1.5 " + "(skipping).\n", pci_name(pdev)); return -ENODEV; } - if ((rc = pci_enable_device(pdev))) { - printk(KERN_WARNING "i2o: I2O controller found but could not be" - " enabled.\n"); - return rc; - } - - printk(KERN_INFO "i2o: I2O controller found on bus %d at %d.\n", - pdev->bus->number, pdev->devfn); + if (!enabled) + if ((rc = pci_enable_device(pdev))) { + printk(KERN_WARNING "i2o: couldn't enable device %s\n", + pci_name(pdev)); + return rc; + } if (pci_set_dma_mask(pdev, DMA_32BIT_MASK)) { - printk(KERN_WARNING "i2o: I2O controller on bus %d at %d: No " - "suitable DMA available!\n", pdev->bus->number, - pdev->devfn); + printk(KERN_WARNING "i2o: no suitable DMA found for %s\n", + pci_name(pdev)); rc = -ENODEV; goto disable; } @@ -418,48 +349,87 @@ static int __devinit i2o_pci_probe(struct pci_dev *pdev, c = i2o_iop_alloc(); if (IS_ERR(c)) { - printk(KERN_ERR "i2o: memory for I2O controller could not be " - "allocated\n"); + printk(KERN_ERR "i2o: couldn't allocate memory for %s\n", + pci_name(pdev)); rc = PTR_ERR(c); goto disable; - } + } else + printk(KERN_INFO "%s: controller found (%s)\n", c->name, + pci_name(pdev)); c->pdev = pdev; - c->device = pdev->dev; + c->device.parent = &pdev->dev; /* Cards that fall apart if you hit them with large I/O loads... */ if (pdev->vendor == PCI_VENDOR_ID_NCR && pdev->device == 0x0630) { c->short_req = 1; - printk(KERN_INFO "i2o: Symbios FC920 workarounds activated.\n"); + printk(KERN_INFO "%s: Symbios FC920 workarounds activated.\n", + c->name); } if (pdev->subsystem_vendor == PCI_VENDOR_ID_PROMISE) { + /* + * Expose the ship behind i960 for initialization, or it will + * failed + */ + i960 = + pci_find_slot(c->pdev->bus->number, + PCI_DEVFN(PCI_SLOT(c->pdev->devfn), 0)); + + if (i960) + pci_write_config_word(i960, 0x42, 0); + c->promise = 1; - printk(KERN_INFO "i2o: Promise workarounds activated.\n"); + c->limit_sectors = 1; } + if (pdev->subsystem_vendor == PCI_VENDOR_ID_DPT) + c->adaptec = 1; + /* Cards that go bananas if you quiesce them before you reset them. */ if (pdev->vendor == PCI_VENDOR_ID_DPT) { c->no_quiesce = 1; if (pdev->device == 0xa511) c->raptor = 1; + + if (pdev->subsystem_device == 0xc05a) { + c->limit_sectors = 1; + printk(KERN_INFO + "%s: limit sectors per request to %d\n", c->name, + I2O_MAX_SECTORS_LIMITED); + } +#ifdef CONFIG_I2O_EXT_ADAPTEC_DMA64 + if (sizeof(dma_addr_t) > 4) { + if (pci_set_dma_mask(pdev, DMA_64BIT_MASK)) + printk(KERN_INFO "%s: 64-bit DMA unavailable\n", + c->name); + else { + c->pae_support = 1; + printk(KERN_INFO "%s: using 64-bit DMA\n", + c->name); + } + } +#endif } if ((rc = i2o_pci_alloc(c))) { - printk(KERN_ERR "i2o: DMA / IO allocation for I2O controller " - " failed\n"); + printk(KERN_ERR "%s: DMA / IO allocation for I2O controller " + "failed\n", c->name); goto free_controller; } if (i2o_pci_irq_enable(c)) { - printk(KERN_ERR "i2o: unable to enable interrupts for I2O " - "controller\n"); + printk(KERN_ERR "%s: unable to enable interrupts for I2O " + "controller\n", c->name); goto free_pci; } if ((rc = i2o_iop_add(c))) goto uninstall; + if (i960) + pci_write_config_word(i960, 0x42, 0x03ff); + return 0; uninstall: @@ -472,7 +442,8 @@ static int __devinit i2o_pci_probe(struct pci_dev *pdev, i2o_iop_free(c); disable: - pci_disable_device(pdev); + if (!enabled) + pci_disable_device(pdev); return rc; } @@ -493,15 +464,16 @@ static void __devexit i2o_pci_remove(struct pci_dev *pdev) i2o_pci_irq_disable(c); i2o_pci_free(c); + pci_disable_device(pdev); + printk(KERN_INFO "%s: Controller removed.\n", c->name); - i2o_iop_free(c); - pci_disable_device(pdev); + put_device(&c->device); }; /* PCI driver for I2O controller */ static struct pci_driver i2o_pci_driver = { - .name = "I2O controller", + .name = "PCI_I2O", .id_table = i2o_pci_ids, .probe = i2o_pci_probe, .remove = __devexit_p(i2o_pci_remove), @@ -525,4 +497,4 @@ void __exit i2o_pci_exit(void) pci_unregister_driver(&i2o_pci_driver); }; -EXPORT_SYMBOL(i2o_dma_realloc); +MODULE_DEVICE_TABLE(pci, i2o_pci_ids);