diff options
Diffstat (limited to 'drivers/parisc/dino.c')
| -rw-r--r-- | drivers/parisc/dino.c | 98 |
1 files changed, 70 insertions, 28 deletions
diff --git a/drivers/parisc/dino.c b/drivers/parisc/dino.c index dfeea458a789..01a50a051296 100644 --- a/drivers/parisc/dino.c +++ b/drivers/parisc/dino.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* ** DINO manager ** @@ -5,12 +6,8 @@ ** (c) Copyright 1999 SuSE GmbH ** (c) Copyright 1999,2000 Hewlett-Packard Company ** (c) Copyright 2000 Grant Grundler -** (c) Copyright 2006 Helge Deller +** (c) Copyright 2006-2019 Helge Deller ** -** This program is free software; you can redistribute it and/or modify -** it under the terms of the GNU General Public License as published by -** the Free Software Foundation; either version 2 of the License, or -** (at your option) any later version. ** ** This module provides access to Dino PCI bus (config/IOport spaces) ** and helps manage Dino IRQ lines. @@ -59,6 +56,7 @@ #include <asm/hardware.h> #include "gsc.h" +#include "iommu.h" #undef DINO_DEBUG @@ -144,21 +142,18 @@ struct dino_device { struct pci_hba_data hba; /* 'C' inheritance - must be first */ spinlock_t dinosaur_pen; - unsigned long txn_addr; /* EIR addr to generate interrupt */ - u32 txn_data; /* EIR data assign to each dino */ u32 imr; /* IRQ's which are enabled */ + struct gsc_irq gsc_irq; int global_irq[DINO_LOCAL_IRQS]; /* map IMR bit to global irq */ #ifdef DINO_DEBUG unsigned int dino_irr0; /* save most recent IRQ line stat */ #endif }; -/* Looks nice and keeps the compiler happy */ -#define DINO_DEV(d) ({ \ - void *__pdata = d; \ - BUG_ON(!__pdata); \ - (struct dino_device *)__pdata; }) - +static inline struct dino_device *DINO_DEV(struct pci_hba_data *hba) +{ + return container_of(hba, struct dino_device, hba); +} /* * Dino Configuration Space Accessor Functions @@ -343,14 +338,43 @@ static void dino_unmask_irq(struct irq_data *d) if (tmp & DINO_MASK_IRQ(local_irq)) { DBG(KERN_WARNING "%s(): IRQ asserted! (ILR 0x%x)\n", __func__, tmp); - gsc_writel(dino_dev->txn_data, dino_dev->txn_addr); + gsc_writel(dino_dev->gsc_irq.txn_data, dino_dev->gsc_irq.txn_addr); } } +#ifdef CONFIG_SMP +static int dino_set_affinity_irq(struct irq_data *d, const struct cpumask *dest, + bool force) +{ + struct dino_device *dino_dev = irq_data_get_irq_chip_data(d); + struct cpumask tmask; + int cpu_irq; + u32 eim; + + if (!cpumask_and(&tmask, dest, cpu_online_mask)) + return -EINVAL; + + cpu_irq = cpu_check_affinity(d, &tmask); + if (cpu_irq < 0) + return cpu_irq; + + dino_dev->gsc_irq.txn_addr = txn_affinity_addr(d->irq, cpu_irq); + eim = ((u32) dino_dev->gsc_irq.txn_addr) | dino_dev->gsc_irq.txn_data; + __raw_writel(eim, dino_dev->hba.base_addr+DINO_IAR0); + + irq_data_update_effective_affinity(d, &tmask); + + return IRQ_SET_MASK_OK; +} +#endif + static struct irq_chip dino_interrupt_type = { .name = "GSC-PCI", .irq_unmask = dino_unmask_irq, .irq_mask = dino_mask_irq, +#ifdef CONFIG_SMP + .irq_set_affinity = dino_set_affinity_irq, +#endif }; @@ -441,6 +465,30 @@ static void quirk_cirrus_cardbus(struct pci_dev *dev) } DECLARE_PCI_FIXUP_ENABLE(PCI_VENDOR_ID_CIRRUS, PCI_DEVICE_ID_CIRRUS_6832, quirk_cirrus_cardbus ); +#ifdef CONFIG_TULIP +/* Check if PCI device is behind a Card-mode Dino. */ +static int pci_dev_is_behind_card_dino(struct pci_dev *dev) +{ + struct dino_device *dino_dev; + + dino_dev = DINO_DEV(parisc_walk_tree(dev->bus->bridge)); + return is_card_dino(&dino_dev->hba.dev->id); +} + +static void pci_fixup_tulip(struct pci_dev *dev) +{ + if (!pci_dev_is_behind_card_dino(dev)) + return; + if (!(pci_resource_flags(dev, 1) & IORESOURCE_MEM)) + return; + pr_warn("%s: HP HSC-PCI Cards with card-mode Dino not yet supported.\n", + pci_name(dev)); + /* Disable this card by zeroing the PCI resources */ + memset(&dev->resource[0], 0, sizeof(dev->resource[0])); + memset(&dev->resource[1], 0, sizeof(dev->resource[1])); +} +DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_DEC, PCI_ANY_ID, pci_fixup_tulip); +#endif /* CONFIG_TULIP */ static void __init dino_bios_init(void) @@ -786,7 +834,6 @@ static int __init dino_common_init(struct parisc_device *dev, { int status; u32 eim; - struct gsc_irq gsc_irq; struct resource *res; pcibios_register_hba(&dino_dev->hba); @@ -801,10 +848,8 @@ static int __init dino_common_init(struct parisc_device *dev, ** still only has 11 IRQ input lines - just map some of them ** to a different processor. */ - dev->irq = gsc_alloc_irq(&gsc_irq); - dino_dev->txn_addr = gsc_irq.txn_addr; - dino_dev->txn_data = gsc_irq.txn_data; - eim = ((u32) gsc_irq.txn_addr) | gsc_irq.txn_data; + dev->irq = gsc_alloc_irq(&dino_dev->gsc_irq); + eim = ((u32) dino_dev->gsc_irq.txn_addr) | dino_dev->gsc_irq.txn_data; /* ** Dino needs a PA "IRQ" to get a processor's attention. @@ -867,20 +912,18 @@ static int __init dino_common_init(struct parisc_device *dev, #define CUJO_RAVEN_BADPAGE 0x01003000UL #define CUJO_FIREHAWK_BADPAGE 0x01607000UL -static const char *dino_vers[] = { +static const char dino_vers[][4] = { "2.0", "2.1", "3.0", "3.1" }; -static const char *cujo_vers[] = { +static const char cujo_vers[][4] = { "1.0", "2.0" }; -void ccio_cujo20_fixup(struct parisc_device *dev, u32 iovp); - /* ** Determine if dino should claim this chip (return 0) or not (return 1). ** If so, initialize the chip appropriately (card-mode vs bridge mode). @@ -954,7 +997,7 @@ static int __init dino_probe(struct parisc_device *dev) } dino_dev->hba.dev = dev; - dino_dev->hba.base_addr = ioremap_nocache(hpa, 4096); + dino_dev->hba.base_addr = ioremap(hpa, 4096); dino_dev->hba.lmmio_space_offset = PCI_F_EXTEND; spin_lock_init(&dino_dev->dinosaur_pen); dino_dev->hba.iommu = ccio_get_iommu(dev); @@ -1041,9 +1084,8 @@ static struct parisc_driver dino_driver __refdata = { * This is the only routine which is NOT static. * Must be called exactly once before pci_init(). */ -int __init dino_init(void) +static int __init dino_init(void) { - register_parisc_driver(&dino_driver); - return 0; + return register_parisc_driver(&dino_driver); } - +arch_initcall(dino_init); |