diff options
Diffstat (limited to 'drivers/parisc')
| -rw-r--r-- | drivers/parisc/Kconfig | 36 | ||||
| -rw-r--r-- | drivers/parisc/Makefile | 20 | ||||
| -rw-r--r-- | drivers/parisc/asp.c | 19 | ||||
| -rw-r--r-- | drivers/parisc/ccio-dma.c | 425 | ||||
| -rw-r--r-- | drivers/parisc/ccio-rm-dma.c | 202 | ||||
| -rw-r--r-- | drivers/parisc/dino.c | 120 | ||||
| -rw-r--r-- | drivers/parisc/eisa.c | 148 | ||||
| -rw-r--r-- | drivers/parisc/eisa_eeprom.c | 22 | ||||
| -rw-r--r-- | drivers/parisc/eisa_enumerator.c | 33 | ||||
| -rw-r--r-- | drivers/parisc/gsc.c | 54 | ||||
| -rw-r--r-- | drivers/parisc/gsc.h | 4 | ||||
| -rw-r--r-- | drivers/parisc/hppb.c | 31 | ||||
| -rw-r--r-- | drivers/parisc/iommu-helpers.h | 54 | ||||
| -rw-r--r-- | drivers/parisc/iommu.h | 55 | ||||
| -rw-r--r-- | drivers/parisc/iosapic.c | 84 | ||||
| -rw-r--r-- | drivers/parisc/iosapic_private.h | 20 | ||||
| -rw-r--r-- | drivers/parisc/lasi.c | 52 | ||||
| -rw-r--r-- | drivers/parisc/lba_pci.c | 181 | ||||
| -rw-r--r-- | drivers/parisc/led.c | 906 | ||||
| -rw-r--r-- | drivers/parisc/pdc_stable.c | 122 | ||||
| -rw-r--r-- | drivers/parisc/power.c | 110 | ||||
| -rw-r--r-- | drivers/parisc/sba_iommu.c | 384 | ||||
| -rw-r--r-- | drivers/parisc/superio.c | 15 | ||||
| -rw-r--r-- | drivers/parisc/wax.c | 27 |
24 files changed, 1429 insertions, 1695 deletions
diff --git a/drivers/parisc/Kconfig b/drivers/parisc/Kconfig index 592de566e72f..9cbcf15527b6 100644 --- a/drivers/parisc/Kconfig +++ b/drivers/parisc/Kconfig @@ -1,7 +1,10 @@ +# SPDX-License-Identifier: GPL-2.0-only menu "Bus options (PCI, PCMCIA, EISA, GSC, ISA)" config GSC bool "VSC/GSC/HSC bus support" + select HAVE_EISA + select HAS_IOPORT default y help The VSC, GSC and HSC busses were used from the earliest 700-series @@ -46,16 +49,6 @@ config GSC_WAX used), a HIL interface chip and is also known to be used as the GSC bridge for an X.25 GSC card. -config EISA - bool "EISA support" - depends on GSC - help - Say Y here if you have an EISA bus in your machine. This code - supports both the Mongoose & Wax EISA adapters. It is sadly - incomplete and lacks support for card-to-host DMA. - -source "drivers/eisa/Kconfig" - config ISA bool "ISA support" depends on EISA @@ -63,17 +56,6 @@ config ISA If you want to plug an ISA card into your EISA bus, say Y here. Most people should say N. -config PCI - bool "PCI support" - help - All recent HP machines have PCI slots, and you should say Y here - if you have a recent machine. If you are convinced you do not have - PCI slots in your machine (eg a 712), then you may say "N" here. - Beware that some GSC cards have a Dino onboard and PCI inside them, - so it may be safest to say "Y" anyway. - -source "drivers/pci/Kconfig" - config GSC_DINO bool "GSCtoPCI/Dino PCI support" depends on PCI && GSC @@ -103,15 +85,6 @@ config IOMMU_SBA depends on PCI_LBA default PCI_LBA -config IOMMU_HELPER - bool - depends on IOMMU_SBA || IOMMU_CCIO - default y - -source "drivers/pcmcia/Kconfig" - -source "drivers/pci/hotplug/Kconfig" - endmenu menu "PA-RISC specific drivers" @@ -127,8 +100,9 @@ config SUPERIO config CHASSIS_LCD_LED bool "Chassis LCD and LED support" + depends on LEDS_CLASS=y default y - select VM_EVENT_COUNTERS + select LEDS_TRIGGERS help Say Y here if you want to enable support for the Heartbeat, Disk/Network activities LEDs on some PA-RISC machines, diff --git a/drivers/parisc/Makefile b/drivers/parisc/Makefile index f95cab57133a..69860a60bb7a 100644 --- a/drivers/parisc/Makefile +++ b/drivers/parisc/Makefile @@ -1,27 +1,27 @@ +# SPDX-License-Identifier: GPL-2.0 # -# Makefile for most of the non-PCI devices in PA-RISC machines +# Makefile PCI and non-PCI devices in PA-RISC machines +# +# Keep the order below, e.g. +# - ccio before any potential subdevices +# - gsc is required before lasi and wax +# - asp and wax before the EISA adapters for the IRQ regions +# - EISA must come before PCI to be sure it gets IRQ region # -# I/O SAPIC is also on IA64 platforms. -# The two could be merged into a common source some day. obj-$(CONFIG_IOSAPIC) += iosapic.o obj-$(CONFIG_IOMMU_SBA) += sba_iommu.o obj-$(CONFIG_PCI_LBA) += lba_pci.o - -# Only use one of them: ccio-rm-dma is for PCX-W systems *only* -# obj-$(CONFIG_IOMMU_CCIO) += ccio-rm-dma.o obj-$(CONFIG_IOMMU_CCIO) += ccio-dma.o obj-$(CONFIG_GSC) += gsc.o - -obj-$(CONFIG_HPPB) += hppb.o -obj-$(CONFIG_GSC_DINO) += dino.o obj-$(CONFIG_GSC_LASI) += lasi.o asp.o obj-$(CONFIG_GSC_WAX) += wax.o obj-$(CONFIG_EISA) += eisa.o eisa_enumerator.o eisa_eeprom.o +obj-$(CONFIG_HPPB) += hppb.o +obj-$(CONFIG_GSC_DINO) += dino.o obj-$(CONFIG_SUPERIO) += superio.o obj-$(CONFIG_CHASSIS_LCD_LED) += led.o obj-$(CONFIG_PDC_STABLE) += pdc_stable.o obj-y += power.o - diff --git a/drivers/parisc/asp.c b/drivers/parisc/asp.c index 6a1ab2512a53..32af8f095781 100644 --- a/drivers/parisc/asp.c +++ b/drivers/parisc/asp.c @@ -1,14 +1,10 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* * ASP Device Driver * * (c) Copyright 2000 The Puffin Group Inc. * - * 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. - * - * by Helge Deller <deller@gmx.de> + * (c) 2000-2023 by Helge Deller <deller@gmx.de> */ #include <linux/errno.h> @@ -118,13 +114,20 @@ static int __init asp_init_chip(struct parisc_device *dev) return ret; } -static struct parisc_device_id asp_tbl[] = { +static const struct parisc_device_id asp_tbl[] __initconst = { { HPHW_BA, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, 0x00070 }, { 0, } }; +MODULE_DEVICE_TABLE(parisc, asp_tbl); -struct parisc_driver asp_driver = { +static struct parisc_driver asp_driver __refdata = { .name = "asp", .id_table = asp_tbl, .probe = asp_init_chip, }; + +static int __init asp_init(void) +{ + return register_parisc_driver(&asp_driver); +} +arch_initcall(asp_init); diff --git a/drivers/parisc/ccio-dma.c b/drivers/parisc/ccio-dma.c index 8b490d77054f..4e7071714356 100644 --- a/drivers/parisc/ccio-dma.c +++ b/drivers/parisc/ccio-dma.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* ** ccio-dma.c: ** DMA management routines for first generation cache-coherent machines. @@ -7,22 +8,10 @@ ** (c) Copyright 2000 Ryan Bradetich ** (c) Copyright 2000 Hewlett-Packard Company ** -** 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. -** -** ** "Real Mode" operation refers to U2/Uturn chip operation. ** U2/Uturn were designed to perform coherency checks w/o using ** the I/O MMU - basically what x86 does. ** -** Philipp Rumpf has a "Real Mode" driver for PCX-W machines at: -** CVSROOT=:pserver:anonymous@198.186.203.37:/cvsroot/linux-parisc -** cvs -z3 co linux/arch/parisc/kernel/dma-rm.c -** -** I've rewritten his code to work under TPG's tree. See ccio-rm-dma.c. -** ** Drawbacks of using Real Mode are: ** o outbound DMA is slower - U2 won't prefetch data (GSC+ XQL signal). ** o Inbound DMA less efficient - U2 can't use DMA_FAST attribute. @@ -42,19 +31,22 @@ #include <linux/reboot.h> #include <linux/proc_fs.h> #include <linux/seq_file.h> +#include <linux/dma-map-ops.h> #include <linux/scatterlist.h> #include <linux/iommu-helper.h> #include <linux/export.h> #include <asm/byteorder.h> #include <asm/cache.h> /* for L1_CACHE_BYTES */ -#include <asm/uaccess.h> +#include <linux/uaccess.h> #include <asm/page.h> #include <asm/dma.h> #include <asm/io.h> #include <asm/hardware.h> /* for register_module() */ #include <asm/parisc-device.h> +#include "iommu.h" + /* ** Choose "ccio" since that's what HP-UX calls it. ** Make it easier for folks to migrate from one to the other :^) @@ -71,8 +63,6 @@ #undef CCIO_COLLECT_STATS #endif -#include <asm/runway.h> /* for proc_runway_root */ - #ifdef DEBUG_CCIO_INIT #define DBG_INIT(x...) printk(x) #else @@ -97,7 +87,6 @@ #define DBG_RUN_SG(x...) #endif -#define CCIO_INLINE inline #define WRITE_U32(value, addr) __raw_writel(value, addr) #define READ_U32(addr) __raw_readl(addr) @@ -111,29 +100,29 @@ #define CMD_TLB_PURGE 33 /* IO_COMMAND to Purge I/O TLB entry */ struct ioa_registers { - /* Runway Supervisory Set */ - int32_t unused1[12]; - uint32_t io_command; /* Offset 12 */ - uint32_t io_status; /* Offset 13 */ - uint32_t io_control; /* Offset 14 */ - int32_t unused2[1]; - - /* Runway Auxiliary Register Set */ - uint32_t io_err_resp; /* Offset 0 */ - uint32_t io_err_info; /* Offset 1 */ - uint32_t io_err_req; /* Offset 2 */ - uint32_t io_err_resp_hi; /* Offset 3 */ - uint32_t io_tlb_entry_m; /* Offset 4 */ - uint32_t io_tlb_entry_l; /* Offset 5 */ - uint32_t unused3[1]; - uint32_t io_pdir_base; /* Offset 7 */ - uint32_t io_io_low_hv; /* Offset 8 */ - uint32_t io_io_high_hv; /* Offset 9 */ - uint32_t unused4[1]; - uint32_t io_chain_id_mask; /* Offset 11 */ - uint32_t unused5[2]; - uint32_t io_io_low; /* Offset 14 */ - uint32_t io_io_high; /* Offset 15 */ + /* Runway Supervisory Set */ + int32_t unused1[12]; + uint32_t io_command; /* Offset 12 */ + uint32_t io_status; /* Offset 13 */ + uint32_t io_control; /* Offset 14 */ + int32_t unused2[1]; + + /* Runway Auxiliary Register Set */ + uint32_t io_err_resp; /* Offset 0 */ + uint32_t io_err_info; /* Offset 1 */ + uint32_t io_err_req; /* Offset 2 */ + uint32_t io_err_resp_hi; /* Offset 3 */ + uint32_t io_tlb_entry_m; /* Offset 4 */ + uint32_t io_tlb_entry_l; /* Offset 5 */ + uint32_t unused3[1]; + uint32_t io_pdir_base; /* Offset 7 */ + uint32_t io_io_low_hv; /* Offset 8 */ + uint32_t io_io_high_hv; /* Offset 9 */ + uint32_t unused4[1]; + uint32_t io_chain_id_mask; /* Offset 11 */ + uint32_t unused5[2]; + uint32_t io_io_low; /* Offset 14 */ + uint32_t io_io_high; /* Offset 15 */ }; /* @@ -198,7 +187,7 @@ struct ioa_registers { ** In order for a Runway address to reside within GSC+ extended address space: ** Runway Address [0:7] must identically compare to 8'b11111111 ** Runway Address [8:11] must be equal to IO_IO_LOW(_HV)[16:19] -** Runway Address [12:23] must be greater than or equal to +** Runway Address [12:23] must be greater than or equal to ** IO_IO_LOW(_HV)[20:31] and less than IO_IO_HIGH(_HV)[20:31]. ** Runway Address [24:39] is not used in the comparison. ** @@ -225,11 +214,11 @@ struct ioa_registers { struct ioc { struct ioa_registers __iomem *ioc_regs; /* I/O MMU base address */ u8 *res_map; /* resource map, bit == pdir entry */ - u64 *pdir_base; /* physical base address */ - u32 pdir_size; /* bytes, function of IOV Space size */ - u32 res_hint; /* next available IOVP - + __le64 *pdir_base; /* physical base address */ + u32 pdir_size; /* bytes, function of IOV Space size */ + u32 res_hint; /* next available IOVP - circular search */ - u32 res_size; /* size of resource map in bytes */ + u32 res_size; /* size of resource map in bytes */ spinlock_t res_lock; #ifdef CCIO_COLLECT_STATS @@ -249,7 +238,7 @@ struct ioc { unsigned short cujo20_bug; /* STUFF We don't need in performance path */ - u32 chainid_shift; /* specify bit location of chain_id */ + u32 chainid_shift; /* specify bit location of chain_id */ struct ioc *next; /* Linked list of discovered iocs */ const char *name; /* device name from firmware */ unsigned int hw_path; /* the hardware path this ioc is associatd with */ @@ -268,7 +257,7 @@ static int ioc_count; * Each bit can represent a number of pages. * LSbs represent lower addresses (IOVA's). * -* This was was copied from sba_iommu.c. Don't try to unify +* This was copied from sba_iommu.c. Don't try to unify * the two resource managers unless a way to have different * allocation policies is also adjusted. We'd like to avoid * I/O TLB thrashing by having resource allocation policy @@ -293,7 +282,7 @@ static int ioc_count; ** cause the kernel to panic anyhow. */ #define CCIO_SEARCH_LOOP(ioc, res_idx, mask, size) \ - for(; res_ptr < res_end; ++res_ptr) { \ + for (; res_ptr < res_end; ++res_ptr) { \ int ret;\ unsigned int idx;\ idx = (unsigned int)((unsigned long)res_ptr - (unsigned long)ioc->res_map); \ @@ -309,9 +298,9 @@ static int ioc_count; #define CCIO_FIND_FREE_MAPPING(ioa, res_idx, mask, size) \ u##size *res_ptr = (u##size *)&((ioc)->res_map[ioa->res_hint & ~((size >> 3) - 1)]); \ u##size *res_end = (u##size *)&(ioc)->res_map[ioa->res_size]; \ - CCIO_SEARCH_LOOP(ioc, res_idx, mask, size); \ - res_ptr = (u##size *)&(ioc)->res_map[0]; \ - CCIO_SEARCH_LOOP(ioa, res_idx, mask, size); + CCIO_SEARCH_LOOP(ioc, res_idx, mask, size); \ + res_ptr = (u##size *)&(ioc)->res_map[0]; \ + CCIO_SEARCH_LOOP(ioa, res_idx, mask, size); /* ** Find available bit in this ioa's resource map. @@ -330,7 +319,8 @@ static int ioc_count; /** * ccio_alloc_range - Allocate pages in the ioc's resource map. * @ioc: The I/O Controller. - * @pages_needed: The requested number of pages to be mapped into the + * @dev: The PCI device. + * @size: The requested number of bytes to be mapped into the * I/O Pdir... * * This function searches the resource map of the ioc to locate a range @@ -348,17 +338,16 @@ ccio_alloc_range(struct ioc *ioc, struct device *dev, size_t size) BUG_ON(pages_needed == 0); BUG_ON((pages_needed * IOVP_SIZE) > DMA_CHUNK_SIZE); - - DBG_RES("%s() size: %d pages_needed %d\n", - __func__, size, pages_needed); + + DBG_RES("%s() size: %zu pages_needed %d\n", + __func__, size, pages_needed); /* ** "seek and ye shall find"...praying never hurts either... ** ggg sacrifices another 710 to the computer gods. */ - boundary_size = ALIGN((unsigned long long)dma_get_seg_boundary(dev) + 1, - 1ULL << IOVP_SHIFT) >> IOVP_SHIFT; + boundary_size = dma_get_seg_boundary_nr_pages(dev, IOVP_SHIFT); if (pages_needed <= 8) { /* @@ -417,7 +406,7 @@ resource_found: #define CCIO_FREE_MAPPINGS(ioc, res_idx, mask, size) \ u##size *res_ptr = (u##size *)&((ioc)->res_map[res_idx]); \ BUG_ON((*res_ptr & mask) != mask); \ - *res_ptr &= ~(mask); + *res_ptr &= ~(mask); /** * ccio_free_range - Free pages from the ioc's resource map. @@ -438,7 +427,7 @@ ccio_free_range(struct ioc *ioc, dma_addr_t iova, unsigned long pages_mapped) BUG_ON((pages_mapped * IOVP_SIZE) > DMA_CHUNK_SIZE); BUG_ON(pages_mapped > BITS_PER_LONG); - DBG_RES("%s(): res_idx: %d pages_mapped %d\n", + DBG_RES("%s(): res_idx: %d pages_mapped %lu\n", __func__, res_idx, pages_mapped); #ifdef CCIO_COLLECT_STATS @@ -519,19 +508,19 @@ typedef unsigned long space_t; ** when it passes in BIDIRECTIONAL flag. */ static u32 hint_lookup[] = { - [PCI_DMA_BIDIRECTIONAL] = HINT_STOP_MOST | HINT_SAFE_DMA | IOPDIR_VALID, - [PCI_DMA_TODEVICE] = HINT_STOP_MOST | HINT_PREFETCH | IOPDIR_VALID, - [PCI_DMA_FROMDEVICE] = HINT_STOP_MOST | IOPDIR_VALID, + [DMA_BIDIRECTIONAL] = HINT_STOP_MOST | HINT_SAFE_DMA | IOPDIR_VALID, + [DMA_TO_DEVICE] = HINT_STOP_MOST | HINT_PREFETCH | IOPDIR_VALID, + [DMA_FROM_DEVICE] = HINT_STOP_MOST | IOPDIR_VALID, }; /** * ccio_io_pdir_entry - Initialize an I/O Pdir. * @pdir_ptr: A pointer into I/O Pdir. * @sid: The Space Identifier. - * @vba: The virtual address. + * @pba: The physical address. * @hints: The DMA Hint. * - * Given a virtual address (vba, arg2) and space id, (sid, arg1), + * Given a physical address (pba, arg2) and space id, (sid, arg1), * load the I/O PDIR entry pointed to by pdir_ptr (arg0). Each IO Pdir * entry consists of 8 bytes as shown below (MSB == bit 0): * @@ -553,8 +542,8 @@ static u32 hint_lookup[] = { * (Load Coherence Index) instruction. The 8 bits used for the virtual * index are bits 12:19 of the value returned by LCI. */ -static void CCIO_INLINE -ccio_io_pdir_entry(u64 *pdir_ptr, space_t sid, unsigned long vba, +static void +ccio_io_pdir_entry(__le64 *pdir_ptr, space_t sid, phys_addr_t pba, unsigned long hints) { register unsigned long pa; @@ -563,14 +552,12 @@ ccio_io_pdir_entry(u64 *pdir_ptr, space_t sid, unsigned long vba, /* We currently only support kernel addresses */ BUG_ON(sid != KERNEL_SPACE); - mtsp(sid,1); - /* ** WORD 1 - low order word ** "hints" parm includes the VALID bit! ** "dep" clobbers the physical address offset bits as well. */ - pa = virt_to_phys(vba); + pa = pba; asm volatile("depw %1,31,12,%0" : "+r" (pa) : "r" (hints)); ((u32 *)pdir_ptr)[1] = (u32) pa; @@ -595,7 +582,7 @@ ccio_io_pdir_entry(u64 *pdir_ptr, space_t sid, unsigned long vba, ** Grab virtual index [0:11] ** Deposit virt_idx bits into I/O PDIR word */ - asm volatile ("lci %%r0(%%sr1, %1), %0" : "=r" (ci) : "r" (vba)); + asm volatile ("lci %%r0(%1), %0" : "=r" (ci) : "r" (phys_to_virt(pba))); asm volatile ("extru %1,19,12,%0" : "+r" (ci) : "r" (ci)); asm volatile ("depw %1,15,12,%0" : "+r" (pa) : "r" (ci)); @@ -607,14 +594,13 @@ ccio_io_pdir_entry(u64 *pdir_ptr, space_t sid, unsigned long vba, ** PCX-T'? Don't know. (eg C110 or similar K-class) ** ** See PDC_MODEL/option 0/SW_CAP word for "Non-coherent IO-PDIR bit". - ** Hopefully we can patch (NOP) these out at boot time somehow. ** ** "Since PCX-U employs an offset hash that is incompatible with ** the real mode coherence index generation of U2, the PDIR entry ** must be flushed to memory to retain coherence." */ - asm volatile("fdc %%r0(%0)" : : "r" (pdir_ptr)); - asm volatile("sync"); + asm_io_fdc(pdir_ptr); + asm_io_sync(); } /** @@ -627,7 +613,7 @@ ccio_io_pdir_entry(u64 *pdir_ptr, space_t sid, unsigned long vba, * * FIXME: Can we change the byte_cnt to pages_mapped? */ -static CCIO_INLINE void +static void ccio_clear_io_tlb(struct ioc *ioc, dma_addr_t iovp, size_t byte_cnt) { u32 chain_size = 1 << ioc->chainid_shift; @@ -660,7 +646,7 @@ ccio_clear_io_tlb(struct ioc *ioc, dma_addr_t iovp, size_t byte_cnt) * * FIXME: Can we change byte_cnt to pages_mapped? */ -static CCIO_INLINE void +static void ccio_mark_invalid(struct ioc *ioc, dma_addr_t iova, size_t byte_cnt) { u32 iovp = (u32)CCIO_IOVP(iova); @@ -680,17 +666,14 @@ ccio_mark_invalid(struct ioc *ioc, dma_addr_t iova, size_t byte_cnt) ** FIXME: PCX_W platforms don't need FDC/SYNC. (eg C360) ** PCX-U/U+ do. (eg C200/C240) ** See PDC_MODEL/option 0/SW_CAP for "Non-coherent IO-PDIR bit". - ** - ** Hopefully someone figures out how to patch (NOP) the - ** FDC/SYNC out at boot time. */ - asm volatile("fdc %%r0(%0)" : : "r" (pdir_ptr[7])); + asm_io_fdc(pdir_ptr); iovp += IOVP_SIZE; byte_cnt -= IOVP_SIZE; } - asm volatile("sync"); + asm_io_sync(); ccio_clear_io_tlb(ioc, CCIO_IOVP(iova), saved_byte_cnt); } @@ -704,8 +687,6 @@ ccio_mark_invalid(struct ioc *ioc, dma_addr_t iova, size_t byte_cnt) * ccio_dma_supported - Verify the IOMMU supports the DMA address range. * @dev: The PCI device. * @mask: A bit mask describing the DMA address range of the device. - * - * This function implements the pci_dma_supported function. */ static int ccio_dma_supported(struct device *dev, u64 mask) @@ -716,21 +697,21 @@ ccio_dma_supported(struct device *dev, u64 mask) return 0; } - /* only support 32-bit devices (ie PCI/GSC) */ - return (int)(mask == 0xffffffffUL); + /* only support 32-bit or better devices (ie PCI/GSC) */ + return (int)(mask >= 0xffffffffUL); } /** * ccio_map_single - Map an address range into the IOMMU. * @dev: The PCI device. - * @addr: The start address of the DMA region. + * @addr: The physical address of the DMA region. * @size: The length of the DMA region. * @direction: The direction of the DMA transaction (to/from device). * * This function implements the pci_map_single function. */ static dma_addr_t -ccio_map_single(struct device *dev, void *addr, size_t size, +ccio_map_single(struct device *dev, phys_addr_t addr, size_t size, enum dma_data_direction direction) { int idx; @@ -738,16 +719,18 @@ ccio_map_single(struct device *dev, void *addr, size_t size, unsigned long flags; dma_addr_t iovp; dma_addr_t offset; - u64 *pdir_start; + __le64 *pdir_start; unsigned long hint = hint_lookup[(int)direction]; BUG_ON(!dev); ioc = GET_IOC(dev); + if (!ioc) + return DMA_MAPPING_ERROR; BUG_ON(size <= 0); /* save offset bits */ - offset = ((unsigned long) addr) & ~IOVP_MASK; + offset = offset_in_page(addr); /* round up to nearest IOVP_SIZE */ size = ALIGN(size + offset, IOVP_SIZE); @@ -763,15 +746,15 @@ ccio_map_single(struct device *dev, void *addr, size_t size, pdir_start = &(ioc->pdir_base[idx]); - DBG_RUN("%s() 0x%p -> 0x%lx size: %0x%x\n", - __func__, addr, (long)iovp | offset, size); + DBG_RUN("%s() %pa -> %#lx size: %zu\n", + __func__, &addr, (long)(iovp | offset), size); /* If not cacheline aligned, force SAFE_DMA on the whole mess */ - if((size % L1_CACHE_BYTES) || ((unsigned long)addr % L1_CACHE_BYTES)) + if ((size % L1_CACHE_BYTES) || (addr % L1_CACHE_BYTES)) hint |= HINT_SAFE_DMA; while(size > 0) { - ccio_io_pdir_entry(pdir_start, KERNEL_SPACE, (unsigned long)addr, hint); + ccio_io_pdir_entry(pdir_start, KERNEL_SPACE, addr, hint); DBG_RUN(" pdir %p %08x%08x\n", pdir_start, @@ -788,18 +771,29 @@ ccio_map_single(struct device *dev, void *addr, size_t size, return CCIO_IOVA(iovp, offset); } + +static dma_addr_t +ccio_map_phys(struct device *dev, phys_addr_t phys, size_t size, + enum dma_data_direction direction, unsigned long attrs) +{ + if (unlikely(attrs & DMA_ATTR_MMIO)) + return DMA_MAPPING_ERROR; + + return ccio_map_single(dev, phys, size, direction); +} + + /** - * ccio_unmap_single - Unmap an address range from the IOMMU. + * ccio_unmap_phys - Unmap an address range from the IOMMU. * @dev: The PCI device. - * @addr: The start address of the DMA region. + * @iova: The start address of the DMA region. * @size: The length of the DMA region. * @direction: The direction of the DMA transaction (to/from device). - * - * This function implements the pci_unmap_single function. + * @attrs: attributes */ static void -ccio_unmap_single(struct device *dev, dma_addr_t iova, size_t size, - enum dma_data_direction direction) +ccio_unmap_phys(struct device *dev, dma_addr_t iova, size_t size, + enum dma_data_direction direction, unsigned long attrs) { struct ioc *ioc; unsigned long flags; @@ -807,8 +801,12 @@ ccio_unmap_single(struct device *dev, dma_addr_t iova, size_t size, BUG_ON(!dev); ioc = GET_IOC(dev); + if (!ioc) { + WARN_ON(!ioc); + return; + } - DBG_RUN("%s() iovp 0x%lx/%x\n", + DBG_RUN("%s() iovp %#lx/%zx\n", __func__, (long)iova, size); iova ^= offset; /* clear offset bits */ @@ -828,17 +826,20 @@ ccio_unmap_single(struct device *dev, dma_addr_t iova, size_t size, } /** - * ccio_alloc_consistent - Allocate a consistent DMA mapping. + * ccio_alloc - Allocate a consistent DMA mapping. * @dev: The PCI device. * @size: The length of the DMA region. * @dma_handle: The DMA address handed back to the device (not the cpu). + * @flag: allocation flags + * @attrs: attributes * * This function implements the pci_alloc_consistent function. */ static void * -ccio_alloc_consistent(struct device *dev, size_t size, dma_addr_t *dma_handle, gfp_t flag) +ccio_alloc(struct device *dev, size_t size, dma_addr_t *dma_handle, gfp_t flag, + unsigned long attrs) { - void *ret; + void *ret; #if 0 /* GRANT Need to establish hierarchy for non-PCI devs as well ** and then provide matching gsc_map_xxx() functions for them as well. @@ -849,30 +850,32 @@ ccio_alloc_consistent(struct device *dev, size_t size, dma_addr_t *dma_handle, g return 0; } #endif - ret = (void *) __get_free_pages(flag, get_order(size)); + ret = (void *) __get_free_pages(flag, get_order(size)); if (ret) { memset(ret, 0, size); - *dma_handle = ccio_map_single(dev, ret, size, PCI_DMA_BIDIRECTIONAL); + *dma_handle = ccio_map_single(dev, virt_to_phys(ret), size, + DMA_BIDIRECTIONAL); } return ret; } /** - * ccio_free_consistent - Free a consistent DMA mapping. + * ccio_free - Free a consistent DMA mapping. * @dev: The PCI device. * @size: The length of the DMA region. * @cpu_addr: The cpu address returned from the ccio_alloc_consistent. * @dma_handle: The device address returned from the ccio_alloc_consistent. + * @attrs: attributes * * This function implements the pci_free_consistent function. */ static void -ccio_free_consistent(struct device *dev, size_t size, void *cpu_addr, - dma_addr_t dma_handle) +ccio_free(struct device *dev, size_t size, void *cpu_addr, + dma_addr_t dma_handle, unsigned long attrs) { - ccio_unmap_single(dev, dma_handle, size, 0); + ccio_unmap_phys(dev, dma_handle, size, 0, 0); free_pages((unsigned long)cpu_addr, get_order(size)); } @@ -894,12 +897,13 @@ ccio_free_consistent(struct device *dev, size_t size, void *cpu_addr, * @sglist: The scatter/gather list to be mapped in the IOMMU. * @nents: The number of entries in the scatter/gather list. * @direction: The direction of the DMA transaction (to/from device). + * @attrs: attributes * * This function implements the pci_map_sg function. */ static int ccio_map_sg(struct device *dev, struct scatterlist *sglist, int nents, - enum dma_data_direction direction) + enum dma_data_direction direction, unsigned long attrs) { struct ioc *ioc; int coalesced, filled = 0; @@ -910,13 +914,15 @@ ccio_map_sg(struct device *dev, struct scatterlist *sglist, int nents, BUG_ON(!dev); ioc = GET_IOC(dev); + if (!ioc) + return -EINVAL; DBG_RUN_SG("%s() START %d entries\n", __func__, nents); /* Fast path single entry scatterlists. */ if (nents == 1) { sg_dma_address(sglist) = ccio_map_single(dev, - (void *)sg_virt_addr(sglist), sglist->length, + sg_phys(sglist), sglist->length, direction); sg_dma_len(sglist) = sglist->length; return 1; @@ -971,57 +977,60 @@ ccio_map_sg(struct device *dev, struct scatterlist *sglist, int nents, * @sglist: The scatter/gather list to be unmapped from the IOMMU. * @nents: The number of entries in the scatter/gather list. * @direction: The direction of the DMA transaction (to/from device). + * @attrs: attributes * * This function implements the pci_unmap_sg function. */ static void ccio_unmap_sg(struct device *dev, struct scatterlist *sglist, int nents, - enum dma_data_direction direction) + enum dma_data_direction direction, unsigned long attrs) { struct ioc *ioc; BUG_ON(!dev); ioc = GET_IOC(dev); + if (!ioc) { + WARN_ON(!ioc); + return; + } - DBG_RUN_SG("%s() START %d entries, %08lx,%x\n", - __func__, nents, sg_virt_addr(sglist), sglist->length); + DBG_RUN_SG("%s() START %d entries, %p,%x\n", + __func__, nents, sg_virt(sglist), sglist->length); #ifdef CCIO_COLLECT_STATS ioc->usg_calls++; #endif - while(sg_dma_len(sglist) && nents--) { + while (nents && sg_dma_len(sglist)) { #ifdef CCIO_COLLECT_STATS ioc->usg_pages += sg_dma_len(sglist) >> PAGE_SHIFT; #endif - ccio_unmap_single(dev, sg_dma_address(sglist), - sg_dma_len(sglist), direction); + ccio_unmap_phys(dev, sg_dma_address(sglist), + sg_dma_len(sglist), direction, 0); ++sglist; + nents--; } DBG_RUN_SG("%s() DONE (nents %d)\n", __func__, nents); } -static struct hppa_dma_ops ccio_ops = { +static const struct dma_map_ops ccio_ops = { .dma_supported = ccio_dma_supported, - .alloc_consistent = ccio_alloc_consistent, - .alloc_noncoherent = ccio_alloc_consistent, - .free_consistent = ccio_free_consistent, - .map_single = ccio_map_single, - .unmap_single = ccio_unmap_single, - .map_sg = ccio_map_sg, - .unmap_sg = ccio_unmap_sg, - .dma_sync_single_for_cpu = NULL, /* NOP for U2/Uturn */ - .dma_sync_single_for_device = NULL, /* NOP for U2/Uturn */ - .dma_sync_sg_for_cpu = NULL, /* ditto */ - .dma_sync_sg_for_device = NULL, /* ditto */ + .alloc = ccio_alloc, + .free = ccio_free, + .map_phys = ccio_map_phys, + .unmap_phys = ccio_unmap_phys, + .map_sg = ccio_map_sg, + .unmap_sg = ccio_unmap_sg, + .get_sgtable = dma_common_get_sgtable, + .alloc_pages_op = dma_common_alloc_pages, + .free_pages = dma_common_free_pages, }; #ifdef CONFIG_PROC_FS static int ccio_proc_info(struct seq_file *m, void *p) { - int len = 0; struct ioc *ioc = ioc_list; while (ioc != NULL) { @@ -1031,22 +1040,22 @@ static int ccio_proc_info(struct seq_file *m, void *p) int j; #endif - len += seq_printf(m, "%s\n", ioc->name); + seq_printf(m, "%s\n", ioc->name); - len += seq_printf(m, "Cujo 2.0 bug : %s\n", - (ioc->cujo20_bug ? "yes" : "no")); + seq_printf(m, "Cujo 2.0 bug : %s\n", + (ioc->cujo20_bug ? "yes" : "no")); - len += seq_printf(m, "IO PDIR size : %d bytes (%d entries)\n", - total_pages * 8, total_pages); + seq_printf(m, "IO PDIR size : %d bytes (%d entries)\n", + total_pages * 8, total_pages); #ifdef CCIO_COLLECT_STATS - len += seq_printf(m, "IO PDIR entries : %ld free %ld used (%d%%)\n", - total_pages - ioc->used_pages, ioc->used_pages, - (int)(ioc->used_pages * 100 / total_pages)); + seq_printf(m, "IO PDIR entries : %ld free %ld used (%d%%)\n", + total_pages - ioc->used_pages, ioc->used_pages, + (int)(ioc->used_pages * 100 / total_pages)); #endif - len += seq_printf(m, "Resource bitmap : %d bytes (%d pages)\n", - ioc->res_size, total_pages); + seq_printf(m, "Resource bitmap : %d bytes (%d pages)\n", + ioc->res_size, total_pages); #ifdef CCIO_COLLECT_STATS min = max = ioc->avg_search[0]; @@ -1058,26 +1067,26 @@ static int ccio_proc_info(struct seq_file *m, void *p) min = ioc->avg_search[j]; } avg /= CCIO_SEARCH_SAMPLE; - len += seq_printf(m, " Bitmap search : %ld/%ld/%ld (min/avg/max CPU Cycles)\n", - min, avg, max); + seq_printf(m, " Bitmap search : %ld/%ld/%ld (min/avg/max CPU Cycles)\n", + min, avg, max); - len += seq_printf(m, "pci_map_single(): %8ld calls %8ld pages (avg %d/1000)\n", - ioc->msingle_calls, ioc->msingle_pages, - (int)((ioc->msingle_pages * 1000)/ioc->msingle_calls)); + seq_printf(m, "pci_map_single(): %8ld calls %8ld pages (avg %d/1000)\n", + ioc->msingle_calls, ioc->msingle_pages, + (int)((ioc->msingle_pages * 1000)/ioc->msingle_calls)); - /* KLUGE - unmap_sg calls unmap_single for each mapped page */ + /* KLUGE - unmap_sg calls unmap_phys for each mapped page */ min = ioc->usingle_calls - ioc->usg_calls; max = ioc->usingle_pages - ioc->usg_pages; - len += seq_printf(m, "pci_unmap_single: %8ld calls %8ld pages (avg %d/1000)\n", - min, max, (int)((max * 1000)/min)); - - len += seq_printf(m, "pci_map_sg() : %8ld calls %8ld pages (avg %d/1000)\n", - ioc->msg_calls, ioc->msg_pages, - (int)((ioc->msg_pages * 1000)/ioc->msg_calls)); - - len += seq_printf(m, "pci_unmap_sg() : %8ld calls %8ld pages (avg %d/1000)\n\n\n", - ioc->usg_calls, ioc->usg_pages, - (int)((ioc->usg_pages * 1000)/ioc->usg_calls)); + seq_printf(m, "pci_unmap_single: %8ld calls %8ld pages (avg %d/1000)\n", + min, max, (int)((max * 1000)/min)); + + seq_printf(m, "pci_map_sg() : %8ld calls %8ld pages (avg %d/1000)\n", + ioc->msg_calls, ioc->msg_pages, + (int)((ioc->msg_pages * 1000)/ioc->msg_calls)); + + seq_printf(m, "pci_unmap_sg() : %8ld calls %8ld pages (avg %d/1000)\n\n\n", + ioc->usg_calls, ioc->usg_pages, + (int)((ioc->usg_pages * 1000)/ioc->usg_calls)); #endif /* CCIO_COLLECT_STATS */ ioc = ioc->next; @@ -1086,54 +1095,20 @@ static int ccio_proc_info(struct seq_file *m, void *p) return 0; } -static int ccio_proc_info_open(struct inode *inode, struct file *file) -{ - return single_open(file, &ccio_proc_info, NULL); -} - -static const struct file_operations ccio_proc_info_fops = { - .owner = THIS_MODULE, - .open = ccio_proc_info_open, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, -}; - static int ccio_proc_bitmap_info(struct seq_file *m, void *p) { - int len = 0; struct ioc *ioc = ioc_list; while (ioc != NULL) { - u32 *res_ptr = (u32 *)ioc->res_map; - int j; - - for (j = 0; j < (ioc->res_size / sizeof(u32)); j++) { - if ((j & 7) == 0) - len += seq_puts(m, "\n "); - len += seq_printf(m, "%08x", *res_ptr); - res_ptr++; - } - len += seq_puts(m, "\n\n"); + seq_hex_dump(m, " ", DUMP_PREFIX_NONE, 32, 4, ioc->res_map, + ioc->res_size, false); + seq_putc(m, '\n'); ioc = ioc->next; break; /* XXX - remove me */ } return 0; } - -static int ccio_proc_bitmap_open(struct inode *inode, struct file *file) -{ - return single_open(file, &ccio_proc_bitmap_info, NULL); -} - -static const struct file_operations ccio_proc_bitmap_fops = { - .owner = THIS_MODULE, - .open = ccio_proc_bitmap_open, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, -}; #endif /* CONFIG_PROC_FS */ /** @@ -1181,7 +1156,7 @@ void * ccio_get_iommu(const struct parisc_device *dev) * to/from certain pages. To avoid this happening, we mark these pages * as `used', and ensure that nothing will try to allocate from them. */ -void ccio_cujo20_fixup(struct parisc_device *cujo, u32 iovp) +void __init ccio_cujo20_fixup(struct parisc_device *cujo, u32 iovp) { unsigned int idx; struct parisc_device *dev = parisc_parent(cujo); @@ -1193,7 +1168,7 @@ void ccio_cujo20_fixup(struct parisc_device *cujo, u32 iovp) idx = PDIR_INDEX(iovp) >> 3; while (idx < ioc->res_size) { - res_ptr[idx] |= 0xff; + res_ptr[idx] |= 0xff; idx += PDIR_INDEX(CUJO_20_STEP) >> 3; } } @@ -1227,7 +1202,7 @@ ccio_get_iotlb_size(struct parisc_device *dev) #endif /* 0 */ /* We *can't* support JAVA (T600). Venture there at your own risk. */ -static const struct parisc_device_id ccio_tbl[] = { +static const struct parisc_device_id ccio_tbl[] __initconst = { { HPHW_IOA, HVERSION_REV_ANY_ID, U2_IOA_RUNWAY, 0xb }, /* U2 */ { HPHW_IOA, HVERSION_REV_ANY_ID, UTURN_IOA_RUNWAY, 0xb }, /* UTurn */ { 0, } @@ -1235,7 +1210,7 @@ static const struct parisc_device_id ccio_tbl[] = { static int ccio_probe(struct parisc_device *dev); -static struct parisc_driver ccio_driver = { +static struct parisc_driver ccio_driver __refdata = { .name = "ccio", .id_table = ccio_tbl, .probe = ccio_probe, @@ -1249,7 +1224,7 @@ static struct parisc_driver ccio_driver = { * I/O Page Directory, the resource map, and initalizing the * U2/Uturn chip into virtual mode. */ -static void +static void __init ccio_ioc_init(struct ioc *ioc) { int i; @@ -1267,7 +1242,7 @@ ccio_ioc_init(struct ioc *ioc) ** Hot-Plug/Removal of PCI cards. (aka PCI OLARD). */ - iova_space_size = (u32) (totalram_pages / count_parisc_driver(&ccio_driver)); + iova_space_size = (u32) (totalram_pages() / count_parisc_driver(&ccio_driver)); /* limit IOVA space size to 1MB-1GB */ @@ -1306,11 +1281,11 @@ ccio_ioc_init(struct ioc *ioc) DBG_INIT("%s() hpa 0x%p mem %luMB IOV %dMB (%d bits)\n", __func__, ioc->ioc_regs, - (unsigned long) totalram_pages >> (20 - PAGE_SHIFT), + (unsigned long) totalram_pages() >> (20 - PAGE_SHIFT), iova_space_size>>20, iov_order + PAGE_SHIFT); - ioc->pdir_base = (u64 *)__get_free_pages(GFP_KERNEL, + ioc->pdir_base = (__le64 *)__get_free_pages(GFP_KERNEL, get_order(ioc->pdir_size)); if(NULL == ioc->pdir_base) { panic("%s() could not allocate I/O Page Table\n", __func__); @@ -1321,7 +1296,7 @@ ccio_ioc_init(struct ioc *ioc) DBG_INIT(" base %p\n", ioc->pdir_base); /* resource map size dictated by pdir_size */ - ioc->res_size = (ioc->pdir_size / sizeof(u64)) >> 3; + ioc->res_size = (ioc->pdir_size / sizeof(u64)) >> 3; DBG_INIT("%s() res_size 0x%x\n", __func__, ioc->res_size); ioc->res_map = (u8 *)__get_free_pages(GFP_KERNEL, @@ -1403,15 +1378,17 @@ ccio_init_resource(struct resource *res, char *name, void __iomem *ioaddr) } } -static void __init ccio_init_resources(struct ioc *ioc) +static int __init ccio_init_resources(struct ioc *ioc) { struct resource *res = ioc->mmio_region; char *name = kmalloc(14, GFP_KERNEL); - + if (unlikely(!name)) + return -ENOMEM; snprintf(name, 14, "GSC Bus [%d/]", ioc->hw_path); ccio_init_resource(res, name, &ioc->ioc_regs->io_io_low); ccio_init_resource(res + 1, name, &ioc->ioc_regs->io_io_low_hv); + return 0; } static int new_ioc_area(struct resource *res, unsigned long size, @@ -1541,11 +1518,12 @@ static int __init ccio_probe(struct parisc_device *dev) { int i; struct ioc *ioc, **ioc_p = &ioc_list; + struct pci_hba_data *hba; ioc = kzalloc(sizeof(struct ioc), GFP_KERNEL); if (ioc == NULL) { printk(KERN_ERR MODULE_NAME ": memory allocation failure\n"); - return 1; + return -ENOMEM; } ioc->name = dev->id.hversion == U2_IOA_RUNWAY ? "U2" : "UTurn"; @@ -1559,27 +1537,40 @@ static int __init ccio_probe(struct parisc_device *dev) *ioc_p = ioc; ioc->hw_path = dev->hw_path; - ioc->ioc_regs = ioremap_nocache(dev->hpa.start, 4096); + ioc->ioc_regs = ioremap(dev->hpa.start, 4096); + if (!ioc->ioc_regs) { + kfree(ioc); + return -ENOMEM; + } ccio_ioc_init(ioc); - ccio_init_resources(ioc); + if (ccio_init_resources(ioc)) { + iounmap(ioc->ioc_regs); + kfree(ioc); + return -ENOMEM; + } hppa_dma_ops = &ccio_ops; - dev->dev.platform_data = kzalloc(sizeof(struct pci_hba_data), GFP_KERNEL); + hba = kzalloc(sizeof(*hba), GFP_KERNEL); /* if this fails, no I/O cards will work, so may as well bug */ - BUG_ON(dev->dev.platform_data == NULL); - HBA_DATA(dev->dev.platform_data)->iommu = ioc; + BUG_ON(hba == NULL); + + hba->iommu = ioc; + dev->dev.platform_data = hba; #ifdef CONFIG_PROC_FS if (ioc_count == 0) { - proc_create(MODULE_NAME, 0, proc_runway_root, - &ccio_proc_info_fops); - proc_create(MODULE_NAME"-bitmap", 0, proc_runway_root, - &ccio_proc_bitmap_fops); + struct proc_dir_entry *runway; + + runway = proc_mkdir("bus/runway", NULL); + if (runway) { + proc_create_single(MODULE_NAME, 0, runway, + ccio_proc_info); + proc_create_single(MODULE_NAME"-bitmap", 0, runway, + ccio_proc_bitmap_info); + } } #endif ioc_count++; - - parisc_has_iommu(); return 0; } @@ -1588,8 +1579,8 @@ static int __init ccio_probe(struct parisc_device *dev) * * Register this driver. */ -void __init ccio_init(void) +static int __init ccio_init(void) { - register_parisc_driver(&ccio_driver); + return register_parisc_driver(&ccio_driver); } - +arch_initcall(ccio_init); diff --git a/drivers/parisc/ccio-rm-dma.c b/drivers/parisc/ccio-rm-dma.c deleted file mode 100644 index f78f6f1aef47..000000000000 --- a/drivers/parisc/ccio-rm-dma.c +++ /dev/null @@ -1,202 +0,0 @@ -/* - * ccio-rm-dma.c: - * DMA management routines for first generation cache-coherent machines. - * "Real Mode" operation refers to U2/Uturn chip operation. The chip - * can perform coherency checks w/o using the I/O MMU. That's all we - * need until support for more than 4GB phys mem is needed. - * - * This is the trivial case - basically what x86 does. - * - * Drawbacks of using Real Mode are: - * o outbound DMA is slower since one isn't using the prefetching - * U2 can do for outbound DMA. - * o Ability to do scatter/gather in HW is also lost. - * o only known to work with PCX-W processor. (eg C360) - * (PCX-U/U+ are not coherent with U2 in real mode.) - * - * - * 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. - * - * - * Original version/author: - * CVSROOT=:pserver:anonymous@198.186.203.37:/cvsroot/linux-parisc - * cvs -z3 co linux/arch/parisc/kernel/dma-rm.c - * - * (C) Copyright 2000 Philipp Rumpf <prumpf@tux.org> - * - * - * Adopted for The Puffin Group's parisc-linux port by Grant Grundler. - * (C) Copyright 2000 Grant Grundler <grundler@puffin.external.hp.com> - * - */ - -#include <linux/types.h> -#include <linux/init.h> -#include <linux/mm.h> -#include <linux/string.h> -#include <linux/pci.h> -#include <linux/gfp.h> - -#include <asm/uaccess.h> - -#include <asm/io.h> -#include <asm/hardware.h> -#include <asm/page.h> - -/* Only chose "ccio" since that's what HP-UX calls it.... -** Make it easier for folks to migrate from one to the other :^) -*/ -#define MODULE_NAME "ccio" - -#define U2_IOA_RUNWAY 0x580 -#define U2_BC_GSC 0x501 -#define UTURN_IOA_RUNWAY 0x581 -#define UTURN_BC_GSC 0x502 - -#define IS_U2(id) ( \ - (((id)->hw_type == HPHW_IOA) && ((id)->hversion == U2_IOA_RUNWAY)) || \ - (((id)->hw_type == HPHW_BCPORT) && ((id)->hversion == U2_BC_GSC)) \ -) - -#define IS_UTURN(id) ( \ - (((id)->hw_type == HPHW_IOA) && ((id)->hversion == UTURN_IOA_RUNWAY)) || \ - (((id)->hw_type == HPHW_BCPORT) && ((id)->hversion == UTURN_BC_GSC)) \ -) - -static int ccio_dma_supported( struct pci_dev *dev, u64 mask) -{ - if (dev == NULL) { - printk(KERN_ERR MODULE_NAME ": EISA/ISA/et al not supported\n"); - BUG(); - return(0); - } - - /* only support 32-bit devices (ie PCI/GSC) */ - return((int) (mask >= 0xffffffffUL)); -} - - -static void *ccio_alloc_consistent(struct pci_dev *dev, size_t size, - dma_addr_t *handle) -{ - void *ret; - - ret = (void *)__get_free_pages(GFP_ATOMIC, get_order(size)); - - if (ret != NULL) { - memset(ret, 0, size); - *handle = virt_to_phys(ret); - } - return ret; -} - -static void ccio_free_consistent(struct pci_dev *dev, size_t size, - void *vaddr, dma_addr_t handle) -{ - free_pages((unsigned long)vaddr, get_order(size)); -} - -static dma_addr_t ccio_map_single(struct pci_dev *dev, void *ptr, size_t size, - int direction) -{ - return virt_to_phys(ptr); -} - -static void ccio_unmap_single(struct pci_dev *dev, dma_addr_t dma_addr, - size_t size, int direction) -{ - /* Nothing to do */ -} - - -static int ccio_map_sg(struct pci_dev *dev, struct scatterlist *sglist, int nents, int direction) -{ - int tmp = nents; - - /* KISS: map each buffer separately. */ - while (nents) { - sg_dma_address(sglist) = ccio_map_single(dev, sglist->address, sglist->length, direction); - sg_dma_len(sglist) = sglist->length; - nents--; - sglist++; - } - - return tmp; -} - - -static void ccio_unmap_sg(struct pci_dev *dev, struct scatterlist *sglist, int nents, int direction) -{ -#if 0 - while (nents) { - ccio_unmap_single(dev, sg_dma_address(sglist), sg_dma_len(sglist), direction); - nents--; - sglist++; - } - return; -#else - /* Do nothing (copied from current ccio_unmap_single() :^) */ -#endif -} - - -static struct pci_dma_ops ccio_ops = { - ccio_dma_supported, - ccio_alloc_consistent, - ccio_free_consistent, - ccio_map_single, - ccio_unmap_single, - ccio_map_sg, - ccio_unmap_sg, - NULL, /* dma_sync_single_for_cpu : NOP for U2 */ - NULL, /* dma_sync_single_for_device : NOP for U2 */ - NULL, /* dma_sync_sg_for_cpu : ditto */ - NULL, /* dma_sync_sg_for_device : ditto */ -}; - - -/* -** Determine if u2 should claim this chip (return 0) or not (return 1). -** If so, initialize the chip and tell other partners in crime they -** have work to do. -*/ -static int -ccio_probe(struct parisc_device *dev) -{ - printk(KERN_INFO "%s found %s at 0x%lx\n", MODULE_NAME, - dev->id.hversion == U2_BC_GSC ? "U2" : "UTurn", - dev->hpa.start); - -/* -** FIXME - should check U2 registers to verify it's really running -** in "Real Mode". -*/ - -#if 0 -/* will need this for "Virtual Mode" operation */ - ccio_hw_init(ccio_dev); - ccio_common_init(ccio_dev); -#endif - hppa_dma_ops = &ccio_ops; - return 0; -} - -static struct parisc_device_id ccio_tbl[] = { - { HPHW_BCPORT, HVERSION_REV_ANY_ID, U2_BC_GSC, 0xc }, - { HPHW_BCPORT, HVERSION_REV_ANY_ID, UTURN_BC_GSC, 0xc }, - { 0, } -}; - -static struct parisc_driver ccio_driver = { - .name = "U2/Uturn", - .id_table = ccio_tbl, - .probe = ccio_probe, -}; - -void __init ccio_init(void) -{ - register_parisc_driver(&ccio_driver); -} diff --git a/drivers/parisc/dino.c b/drivers/parisc/dino.c index 9eae9834bcc7..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 @@ -144,18 +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) ((struct dino_device *) d) - +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 @@ -300,7 +298,7 @@ static void dino_mask_irq(struct irq_data *d) struct dino_device *dino_dev = irq_data_get_irq_chip_data(d); int local_irq = gsc_find_local_irq(d->irq, dino_dev->global_irq, DINO_LOCAL_IRQS); - DBG(KERN_WARNING "%s(0x%p, %d)\n", __func__, dino_dev, d->irq); + DBG(KERN_WARNING "%s(0x%px, %d)\n", __func__, dino_dev, d->irq); /* Clear the matching bit in the IMR register */ dino_dev->imr &= ~(DINO_MASK_IRQ(local_irq)); @@ -313,7 +311,7 @@ static void dino_unmask_irq(struct irq_data *d) int local_irq = gsc_find_local_irq(d->irq, dino_dev->global_irq, DINO_LOCAL_IRQS); u32 tmp; - DBG(KERN_WARNING "%s(0x%p, %d)\n", __func__, dino_dev, d->irq); + DBG(KERN_WARNING "%s(0x%px, %d)\n", __func__, dino_dev, d->irq); /* ** clear pending IRQ bits @@ -340,14 +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 }; @@ -379,7 +406,7 @@ ilr_again: DBG(KERN_DEBUG "%s(%d, %p) mask 0x%x\n", __func__, irq, intr_dev, mask); generic_handle_irq(irq); - mask &= ~(1 << local_irq); + mask &= ~DINO_MASK_IRQ(local_irq); } while (mask); /* Support for level triggered IRQ lines. @@ -393,9 +420,8 @@ ilr_again: if (mask) { if (--ilr_loop > 0) goto ilr_again; - printk(KERN_ERR "Dino 0x%p: stuck interrupt %d\n", + pr_warn_ratelimited("Dino 0x%px: stuck interrupt %d\n", dino_dev->hba.base_addr, mask); - return IRQ_NONE; } return IRQ_HANDLED; } @@ -439,6 +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) @@ -550,7 +600,7 @@ dino_fixup_bus(struct pci_bus *bus) struct pci_dev *dev; struct dino_device *dino_dev = DINO_DEV(parisc_walk_tree(bus->bridge)); - DBG(KERN_WARNING "%s(0x%p) bus %d platform_data 0x%p\n", + DBG(KERN_WARNING "%s(0x%px) bus %d platform_data 0x%px\n", __func__, bus, bus->busn_res.start, bus->bridge->platform_data); @@ -599,8 +649,10 @@ dino_fixup_bus(struct pci_bus *bus) ** P2PB's only have 2 BARs, no IRQs. ** I'd like to just ignore them for now. */ - if ((dev->class >> 8) == PCI_CLASS_BRIDGE_PCI) + if ((dev->class >> 8) == PCI_CLASS_BRIDGE_PCI) { + pcibios_init_bridge(dev); continue; + } /* null out the ROM resource if there is one (we don't * care about an expansion rom on parisc, since it @@ -782,7 +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); @@ -797,10 +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. @@ -849,7 +898,7 @@ static int __init dino_common_init(struct parisc_device *dev, res->flags = IORESOURCE_IO; /* do not mark it busy ! */ if (request_resource(&ioport_resource, res) < 0) { printk(KERN_ERR "%s: request I/O Port region failed " - "0x%lx/%lx (hpa 0x%p)\n", + "0x%lx/%lx (hpa 0x%px)\n", name, (unsigned long)res->start, (unsigned long)res->end, dino_dev->hba.base_addr); return 1; @@ -863,20 +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). @@ -913,7 +960,7 @@ static int __init dino_probe(struct parisc_device *dev) printk("%s version %s found at 0x%lx\n", name, version, hpa); if (!request_mem_region(hpa, PAGE_SIZE, name)) { - printk(KERN_ERR "DINO: Hey! Someone took my MMIO space (0x%ld)!\n", + printk(KERN_ERR "DINO: Hey! Someone took my MMIO space (0x%lx)!\n", hpa); return 1; } @@ -950,8 +997,8 @@ 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.lmmio_space_offset = 0; /* CPU addrs == bus addrs */ + 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); @@ -1017,7 +1064,7 @@ static int __init dino_probe(struct parisc_device *dev) * and 725 firmware misreport it as 0x08080 for no adequately explained * reason. */ -static struct parisc_device_id dino_tbl[] = { +static const struct parisc_device_id dino_tbl[] __initconst = { { HPHW_A_DMA, HVERSION_REV_ANY_ID, 0x004, 0x0009D },/* Card-mode Dino */ { HPHW_A_DMA, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, 0x08080 }, /* XXX */ { HPHW_BRIDGE, HVERSION_REV_ANY_ID, 0x680, 0xa }, /* Bridge-mode Dino */ @@ -1026,7 +1073,7 @@ static struct parisc_device_id dino_tbl[] = { { 0, } }; -static struct parisc_driver dino_driver = { +static struct parisc_driver dino_driver __refdata = { .name = "dino", .id_table = dino_tbl, .probe = dino_probe, @@ -1037,9 +1084,8 @@ static struct parisc_driver dino_driver = { * 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); diff --git a/drivers/parisc/eisa.c b/drivers/parisc/eisa.c index 103095bbe8c0..9eab974e6baf 100644 --- a/drivers/parisc/eisa.c +++ b/drivers/parisc/eisa.c @@ -1,11 +1,7 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* * eisa.c - provide support for EISA adapters in PA-RISC machines * - * 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. - * * Copyright (c) 2001 Matthew Wilcox for Hewlett Packard * Copyright (c) 2001 Daniel Engstrom <5116@telia.com> * @@ -14,16 +10,15 @@ * Wax ASIC also includes a PS/2 and RS-232 controller, but those are * dealt with elsewhere; this file is concerned only with the EISA portions * of Wax. - * - * + * * HINT: * ----- * To allow an ISA card to work properly in the EISA slot you need to - * set an edge trigger level. This may be done on the palo command line - * by adding the kernel parameter "eisa_irq_edge=n,n2,[...]]", with + * set an edge trigger level. This may be done on the palo command line + * by adding the kernel parameter "eisa_irq_edge=n,n2,[...]]", with * n and n2 as the irq levels you want to use. - * - * Example: "eisa_irq_edge=10,11" allows ISA cards to operate at + * + * Example: "eisa_irq_edge=10,11" allows ISA cards to operate at * irq levels 10 and 11. */ @@ -45,10 +40,12 @@ #include <asm/eisa_bus.h> #include <asm/eisa_eeprom.h> +#include "iommu.h" + #if 0 -#define EISA_DBG(msg, arg... ) printk(KERN_DEBUG "eisa: " msg , ## arg ) +#define EISA_DBG(msg, arg...) printk(KERN_DEBUG "eisa: " msg, ## arg) #else -#define EISA_DBG(msg, arg... ) +#define EISA_DBG(msg, arg...) #endif #define SNAKES_EEPROM_BASE_ADDR 0xF0810400 @@ -108,7 +105,7 @@ void eisa_out8(unsigned char data, unsigned short port) void eisa_out16(unsigned short data, unsigned short port) { - if (EISA_bus) + if (EISA_bus) gsc_writew(cpu_to_le16(data), eisa_permute(port)); } @@ -135,9 +132,9 @@ static int master_mask; static int slave_mask; /* the trig level can be set with the - * eisa_irq_edge=n,n,n commandline parameter - * We should really read this from the EEPROM - * in the furure. + * eisa_irq_edge=n,n,n commandline parameter + * We should really read this from the EEPROM + * in the furure. */ /* irq 13,8,2,1,0 must be edge */ static unsigned int eisa_irq_level __read_mostly; /* default to edge triggered */ @@ -170,7 +167,7 @@ static void eisa_unmask_irq(struct irq_data *d) unsigned int irq = d->irq; unsigned long flags; EISA_DBG("enable irq %d\n", irq); - + spin_lock_irqsave(&eisa_irq_lock, flags); if (irq & 8) { slave_mask &= ~(1 << (irq&7)); @@ -194,7 +191,7 @@ static irqreturn_t eisa_irq(int wax_irq, void *intr_dev) { int irq = gsc_readb(0xfc01f000); /* EISA supports 16 irqs */ unsigned long flags; - + spin_lock_irqsave(&eisa_irq_lock, flags); /* read IRR command */ eisa_out8(0x0a, 0x20); @@ -202,31 +199,31 @@ static irqreturn_t eisa_irq(int wax_irq, void *intr_dev) EISA_DBG("irq IAR %02x 8259-1 irr %02x 8259-2 irr %02x\n", irq, eisa_in8(0x20), eisa_in8(0xa0)); - + /* read ISR command */ eisa_out8(0x0a, 0x20); eisa_out8(0x0a, 0xa0); EISA_DBG("irq 8259-1 isr %02x imr %02x 8259-2 isr %02x imr %02x\n", eisa_in8(0x20), eisa_in8(0x21), eisa_in8(0xa0), eisa_in8(0xa1)); - + irq &= 0xf; - + /* mask irq and write eoi */ if (irq & 8) { slave_mask |= (1 << (irq&7)); eisa_out8(slave_mask, 0xa1); eisa_out8(0x60 | (irq&7),0xa0);/* 'Specific EOI' to slave */ - eisa_out8(0x62,0x20); /* 'Specific EOI' to master-IRQ2 */ - + eisa_out8(0x62, 0x20); /* 'Specific EOI' to master-IRQ2 */ + } else { master_mask |= (1 << (irq&7)); eisa_out8(master_mask, 0x21); - eisa_out8(0x60|irq,0x20); /* 'Specific EOI' to master */ + eisa_out8(0x60|irq, 0x20); /* 'Specific EOI' to master */ } spin_unlock_irqrestore(&eisa_irq_lock, flags); generic_handle_irq(irq); - + spin_lock_irqsave(&eisa_irq_lock, flags); /* unmask */ if (irq & 8) { @@ -246,52 +243,47 @@ static irqreturn_t dummy_irq2_handler(int _, void *dev) return IRQ_HANDLED; } -static struct irqaction irq2_action = { - .handler = dummy_irq2_handler, - .name = "cascade", -}; - static void init_eisa_pic(void) { unsigned long flags; - + spin_lock_irqsave(&eisa_irq_lock, flags); eisa_out8(0xff, 0x21); /* mask during init */ eisa_out8(0xff, 0xa1); /* mask during init */ - + /* master pic */ - eisa_out8(0x11,0x20); /* ICW1 */ - eisa_out8(0x00,0x21); /* ICW2 */ - eisa_out8(0x04,0x21); /* ICW3 */ - eisa_out8(0x01,0x21); /* ICW4 */ - eisa_out8(0x40,0x20); /* OCW2 */ - + eisa_out8(0x11, 0x20); /* ICW1 */ + eisa_out8(0x00, 0x21); /* ICW2 */ + eisa_out8(0x04, 0x21); /* ICW3 */ + eisa_out8(0x01, 0x21); /* ICW4 */ + eisa_out8(0x40, 0x20); /* OCW2 */ + /* slave pic */ - eisa_out8(0x11,0xa0); /* ICW1 */ - eisa_out8(0x08,0xa1); /* ICW2 */ - eisa_out8(0x02,0xa1); /* ICW3 */ - eisa_out8(0x01,0xa1); /* ICW4 */ - eisa_out8(0x40,0xa0); /* OCW2 */ - + eisa_out8(0x11, 0xa0); /* ICW1 */ + eisa_out8(0x08, 0xa1); /* ICW2 */ + eisa_out8(0x02, 0xa1); /* ICW3 */ + eisa_out8(0x01, 0xa1); /* ICW4 */ + eisa_out8(0x40, 0xa0); /* OCW2 */ + udelay(100); - - slave_mask = 0xff; - master_mask = 0xfb; + + slave_mask = 0xff; + master_mask = 0xfb; eisa_out8(slave_mask, 0xa1); /* OCW1 */ eisa_out8(master_mask, 0x21); /* OCW1 */ - + /* setup trig level */ EISA_DBG("EISA edge/level %04x\n", eisa_irq_level); - + eisa_out8(eisa_irq_level&0xff, 0x4d0); /* Set all irq's to edge */ - eisa_out8((eisa_irq_level >> 8) & 0xff, 0x4d1); - + eisa_out8((eisa_irq_level >> 8) & 0xff, 0x4d1); + EISA_DBG("pic0 mask %02x\n", eisa_in8(0x21)); EISA_DBG("pic1 mask %02x\n", eisa_in8(0xa1)); EISA_DBG("pic0 edge/level %02x\n", eisa_in8(0x4d0)); EISA_DBG("pic1 edge/level %02x\n", eisa_in8(0x4d1)); - + spin_unlock_irqrestore(&eisa_irq_lock, flags); } @@ -305,7 +297,7 @@ static int __init eisa_probe(struct parisc_device *dev) char *name = is_mongoose(dev) ? "Mongoose" : "Wax"; - printk(KERN_INFO "%s EISA Adapter found at 0x%08lx\n", + printk(KERN_INFO "%s EISA Adapter found at 0x%08lx\n", name, (unsigned long)dev->hpa.start); eisa_dev.hba.dev = dev; @@ -334,16 +326,17 @@ static int __init eisa_probe(struct parisc_device *dev) result = request_irq(dev->irq, eisa_irq, IRQF_SHARED, "EISA", &eisa_dev); if (result) { printk(KERN_ERR "EISA: request_irq failed!\n"); - return result; + goto error_release; } - + /* Reserve IRQ2 */ - setup_irq(2, &irq2_action); + if (request_irq(2, dummy_irq2_handler, 0, "cascade", NULL)) + pr_err("Failed to request irq 2 (cascade)\n"); for (i = 0; i < 16; i++) { irq_set_chip_and_handler(i, &eisa_interrupt_type, handle_simple_irq); } - + EISA_bus = 1; if (dev->num_addrs) { @@ -357,7 +350,12 @@ static int __init eisa_probe(struct parisc_device *dev) eisa_dev.eeprom_addr = MIRAGE_EEPROM_BASE_ADDR; } } - eisa_eeprom_addr = ioremap_nocache(eisa_dev.eeprom_addr, HPEE_MAX_LENGTH); + eisa_eeprom_addr = ioremap(eisa_dev.eeprom_addr, HPEE_MAX_LENGTH); + if (!eisa_eeprom_addr) { + result = -ENOMEM; + printk(KERN_ERR "EISA: ioremap failed!\n"); + goto error_free_irq; + } result = eisa_enumerator(eisa_dev.eeprom_addr, &eisa_dev.hba.io_space, &eisa_dev.hba.lmmio_space); init_eisa_pic(); @@ -372,14 +370,23 @@ static int __init eisa_probe(struct parisc_device *dev) eisa_dev.root.dma_mask = 0xffffffff; /* wild guess */ if (eisa_root_register (&eisa_dev.root)) { printk(KERN_ERR "EISA: Failed to register EISA root\n"); - return -1; + result = -ENOMEM; + goto error_iounmap; } } - + return 0; + +error_iounmap: + iounmap(eisa_eeprom_addr); +error_free_irq: + free_irq(dev->irq, &eisa_dev); +error_release: + release_resource(&eisa_dev.hba.io_space); + return result; } -static const struct parisc_device_id eisa_tbl[] = { +static const struct parisc_device_id eisa_tbl[] __initconst = { { HPHW_BA, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, 0x00076 }, /* Mongoose */ { HPHW_BA, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, 0x00090 }, /* Wax EISA */ { 0, } @@ -387,16 +394,17 @@ static const struct parisc_device_id eisa_tbl[] = { MODULE_DEVICE_TABLE(parisc, eisa_tbl); -static struct parisc_driver eisa_driver = { +static struct parisc_driver eisa_driver __refdata = { .name = "eisa_ba", .id_table = eisa_tbl, .probe = eisa_probe, }; -void __init eisa_init(void) +static int __init parisc_eisa_init(void) { - register_parisc_driver(&eisa_driver); + return register_parisc_driver(&eisa_driver); } +arch_initcall(parisc_eisa_init); static unsigned int eisa_irq_configured; @@ -404,7 +412,7 @@ void eisa_make_irq_level(int num) { if (eisa_irq_configured& (1<<num)) { printk(KERN_WARNING - "IRQ %d polarity configured twice (last to level)\n", + "IRQ %d polarity configured twice (last to level)\n", num); } eisa_irq_level |= (1<<num); /* set the corresponding bit */ @@ -414,7 +422,7 @@ void eisa_make_irq_level(int num) void eisa_make_irq_edge(int num) { if (eisa_irq_configured& (1<<num)) { - printk(KERN_WARNING + printk(KERN_WARNING "IRQ %d polarity configured twice (last to edge)\n", num); } @@ -430,18 +438,18 @@ static int __init eisa_irq_setup(char *str) EISA_DBG("IRQ setup\n"); while (cur != NULL) { char *pe; - + val = (int) simple_strtoul(cur, &pe, 0); if (val > 15 || val < 0) { printk(KERN_ERR "eisa: EISA irq value are 0-15\n"); continue; } - if (val == 2) { + if (val == 2) { val = 9; } eisa_make_irq_edge(val); /* clear the corresponding bit */ EISA_DBG("setting IRQ %d to edge-triggered mode\n", val); - + if ((cur = strchr(cur, ','))) { cur++; } else { diff --git a/drivers/parisc/eisa_eeprom.c b/drivers/parisc/eisa_eeprom.c index 783906fe659a..601cbb22574f 100644 --- a/drivers/parisc/eisa_eeprom.c +++ b/drivers/parisc/eisa_eeprom.c @@ -1,22 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* * EISA "eeprom" support routines * * Copyright (C) 2001 Thomas Bogendoerfer <tsbogend at parisc-linux.org> - * - * - * 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 program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ #include <linux/module.h> @@ -26,11 +12,9 @@ #include <linux/slab.h> #include <linux/fs.h> #include <asm/io.h> -#include <asm/uaccess.h> +#include <linux/uaccess.h> #include <asm/eisa_eeprom.h> -#define EISA_EEPROM_MINOR 241 - static loff_t eisa_eeprom_llseek(struct file *file, loff_t offset, int origin) { return fixed_size_llseek(file, offset, origin, HPEE_MAX_LENGTH); @@ -106,7 +90,7 @@ static int __init eisa_eeprom_init(void) return retval; } - printk(KERN_INFO "EISA EEPROM at 0x%p\n", eisa_eeprom_addr); + printk(KERN_INFO "EISA EEPROM at 0x%px\n", eisa_eeprom_addr); return 0; } diff --git a/drivers/parisc/eisa_enumerator.c b/drivers/parisc/eisa_enumerator.c index caa153133754..f0cb31198a8f 100644 --- a/drivers/parisc/eisa_enumerator.c +++ b/drivers/parisc/eisa_enumerator.c @@ -1,13 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* * eisa_enumerator.c - provide support for EISA adapters in PA-RISC machines * - * 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. - * * Copyright (c) 2002 Daniel Engstrom <5116@telia.com> - * */ #include <linux/ioport.h> @@ -15,7 +10,7 @@ #include <linux/kernel.h> #include <linux/slab.h> #include <asm/io.h> -#include <asm/uaccess.h> +#include <linux/uaccess.h> #include <asm/byteorder.h> #include <asm/eisa_bus.h> @@ -91,14 +86,14 @@ static int configure_memory(const unsigned char *buf, for (i=0;i<HPEE_MEMORY_MAX_ENT;i++) { c = get_8(buf+len); - if (NULL != (res = kmalloc(sizeof(struct resource), GFP_KERNEL))) { + if (NULL != (res = kzalloc(sizeof(struct resource), GFP_KERNEL))) { int result; res->name = name; res->start = mem_parent->start + get_24(buf+len+2); res->end = res->start + get_16(buf+len+5)*1024; res->flags = IORESOURCE_MEM; - printk("memory %lx-%lx ", (unsigned long)res->start, (unsigned long)res->end); + pr_cont("memory %pR ", res); result = request_resource(mem_parent, res); if (result < 0) { printk(KERN_ERR "EISA Enumerator: failed to claim EISA Bus address space!\n"); @@ -128,7 +123,7 @@ static int configure_irq(const unsigned char *buf) for (i=0;i<HPEE_IRQ_MAX_ENT;i++) { c = get_8(buf+len); - printk("IRQ %d ", c & HPEE_IRQ_CHANNEL_MASK); + pr_cont("IRQ %d ", c & HPEE_IRQ_CHANNEL_MASK); if (c & HPEE_IRQ_TRIG_LEVEL) { eisa_make_irq_level(c & HPEE_IRQ_CHANNEL_MASK); } else { @@ -158,7 +153,7 @@ static int configure_dma(const unsigned char *buf) for (i=0;i<HPEE_DMA_MAX_ENT;i++) { c = get_8(buf+len); - printk("DMA %d ", c&HPEE_DMA_CHANNEL_MASK); + pr_cont("DMA %d ", c&HPEE_DMA_CHANNEL_MASK); /* fixme: maybe initialize the dma channel withthe timing ? */ len+=2; if (!(c & HPEE_DMA_MORE)) { @@ -183,12 +178,12 @@ static int configure_port(const unsigned char *buf, struct resource *io_parent, for (i=0;i<HPEE_PORT_MAX_ENT;i++) { c = get_8(buf+len); - if (NULL != (res = kmalloc(sizeof(struct resource), GFP_KERNEL))) { + if (NULL != (res = kzalloc(sizeof(struct resource), GFP_KERNEL))) { res->name = board; res->start = get_16(buf+len+1); res->end = get_16(buf+len+1)+(c&HPEE_PORT_SIZE_MASK)+1; res->flags = IORESOURCE_IO; - printk("ioports %lx-%lx ", (unsigned long)res->start, (unsigned long)res->end); + pr_cont("ioports %pR ", res); result = request_resource(io_parent, res); if (result < 0) { printk(KERN_ERR "EISA Enumerator: failed to claim EISA Bus address space!\n"); @@ -357,7 +352,7 @@ static int parse_slot_config(int slot, } if (flags & HPEE_FUNCTION_INFO_CFG_FREE_FORM) { /* I have no idea how to handle this */ - printk("function %d have free-form confgiuration, skipping ", + printk("function %d have free-form configuration, skipping ", num_func); pos = p0 + function_len; continue; @@ -398,7 +393,7 @@ static int parse_slot_config(int slot, } if (p0 + function_len < pos) { - printk(KERN_ERR "eisa_enumerator: function %d length mis-match " + printk(KERN_ERR "eisa_enumerator: function %d length mismatch " "got %d, expected %d\n", num_func, pos-p0, function_len); res=-1; @@ -406,19 +401,19 @@ static int parse_slot_config(int slot, } pos = p0 + function_len; } - printk("\n"); + pr_cont("\n"); if (!id_string_used) { kfree(board); } if (pos != es->config_data_length) { - printk(KERN_ERR "eisa_enumerator: config data length mis-match got %d, expected %d\n", + printk(KERN_ERR "eisa_enumerator: config data length mismatch got %d, expected %d\n", pos, es->config_data_length); res=-1; } if (num_func != es->num_functions) { - printk(KERN_ERR "eisa_enumerator: number of functions mis-match got %d, expected %d\n", + printk(KERN_ERR "eisa_enumerator: number of functions mismatch got %d, expected %d\n", num_func, es->num_functions); res=-2; } @@ -456,7 +451,7 @@ static int init_slot(int slot, struct eeprom_eisa_slot_info *es) } if (es->eisa_slot_id != id) { print_eisa_id(id_string, id); - printk(KERN_ERR "EISA slot %d id mis-match: got %s", + printk(KERN_ERR "EISA slot %d id mismatch: got %s", slot, id_string); print_eisa_id(id_string, es->eisa_slot_id); diff --git a/drivers/parisc/gsc.c b/drivers/parisc/gsc.c index 1bab5a2cd359..8ba778170447 100644 --- a/drivers/parisc/gsc.c +++ b/drivers/parisc/gsc.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* * Interrupt management for most GSC and related devices. * @@ -6,11 +7,6 @@ * (c) Copyright 1999 Matthew Wilcox * (c) Copyright 2000 Helge Deller * (c) Copyright 2001 Matthew Wilcox for Hewlett-Packard - * - * 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. */ #include <linux/bitops.h> @@ -139,10 +135,43 @@ static void gsc_asic_unmask_irq(struct irq_data *d) */ } +#ifdef CONFIG_SMP +static int gsc_set_affinity_irq(struct irq_data *d, const struct cpumask *dest, + bool force) +{ + struct gsc_asic *gsc_dev = irq_data_get_irq_chip_data(d); + struct cpumask tmask; + int cpu_irq; + + if (!cpumask_and(&tmask, dest, cpu_online_mask)) + return -EINVAL; + + cpu_irq = cpu_check_affinity(d, &tmask); + if (cpu_irq < 0) + return cpu_irq; + + gsc_dev->gsc_irq.txn_addr = txn_affinity_addr(d->irq, cpu_irq); + gsc_dev->eim = ((u32) gsc_dev->gsc_irq.txn_addr) | gsc_dev->gsc_irq.txn_data; + + /* switch IRQ's for devices below LASI/WAX to other CPU */ + /* ASP chip (svers 0x70) does not support reprogramming */ + if (gsc_dev->gsc->id.sversion != 0x70) + gsc_writel(gsc_dev->eim, gsc_dev->hpa + OFFSET_IAR); + + irq_data_update_effective_affinity(d, &tmask); + + return IRQ_SET_MASK_OK; +} +#endif + + static struct irq_chip gsc_asic_interrupt_type = { .name = "GSC-ASIC", .irq_unmask = gsc_asic_unmask_irq, .irq_mask = gsc_asic_mask_irq, +#ifdef CONFIG_SMP + .irq_set_affinity = gsc_set_affinity_irq, +#endif }; int gsc_assign_irq(struct irq_chip *type, void *data) @@ -231,18 +260,3 @@ int gsc_common_setup(struct parisc_device *parent, struct gsc_asic *gsc_asic) return 0; } - -extern struct parisc_driver lasi_driver; -extern struct parisc_driver asp_driver; -extern struct parisc_driver wax_driver; - -void __init gsc_init(void) -{ -#ifdef CONFIG_GSC_LASI - register_parisc_driver(&lasi_driver); - register_parisc_driver(&asp_driver); -#endif -#ifdef CONFIG_GSC_WAX - register_parisc_driver(&wax_driver); -#endif -} diff --git a/drivers/parisc/gsc.h b/drivers/parisc/gsc.h index b9d7bfb68e24..73cbd0bb1975 100644 --- a/drivers/parisc/gsc.h +++ b/drivers/parisc/gsc.h @@ -1,9 +1,8 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ /* * drivers/parisc/gsc.h * Declarations for functions in gsc.c * Copyright (c) 2000-2002 Helge Deller, Matthew Wilcox - * - * Distributed under the terms of the GPL, version 2 */ #include <linux/interrupt.h> @@ -32,6 +31,7 @@ struct gsc_asic { int version; int type; int eim; + struct gsc_irq gsc_irq; int global_irq[32]; }; diff --git a/drivers/parisc/hppb.c b/drivers/parisc/hppb.c index 898208e4f302..0f9d80384e3d 100644 --- a/drivers/parisc/hppb.c +++ b/drivers/parisc/hppb.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* ** hppb.c: ** HP-PB bus driver for the NOVA and K-Class systems. @@ -5,10 +6,6 @@ ** (c) Copyright 2002 Ryan Bradetich ** (c) Copyright 2002 Hewlett-Packard Company ** -** 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. ** */ @@ -23,6 +20,8 @@ #include <asm/hardware.h> #include <asm/parisc-device.h> +#include "iommu.h" + struct hppb_card { unsigned long hpa; struct resource mmio_region; @@ -45,7 +44,7 @@ static struct hppb_card hppb_card_head = { * (return 1). If so, initialize the chip and tell other partners in crime * they have work to do. */ -static int hppb_probe(struct parisc_device *dev) +static int __init hppb_probe(struct parisc_device *dev) { int status; struct hppb_card *card = &hppb_card_head; @@ -62,8 +61,6 @@ static int hppb_probe(struct parisc_device *dev) } card = card->next; } - printk(KERN_INFO "Found GeckoBoa at 0x%llx\n", - (unsigned long long) dev->hpa.start); card->hpa = dev->hpa.start; card->mmio_region.name = "HP-PB Bus"; @@ -73,15 +70,16 @@ static int hppb_probe(struct parisc_device *dev) card->mmio_region.end = gsc_readl(dev->hpa.start + IO_IO_HIGH) - 1; status = ccio_request_resource(dev, &card->mmio_region); - if(status < 0) { - printk(KERN_ERR "%s: failed to claim HP-PB bus space (%pR)\n", - __FILE__, &card->mmio_region); - } + + pr_info("Found GeckoBoa at %pap, bus space %pR,%s claimed.\n", + &dev->hpa.start, + &card->mmio_region, + (status < 0) ? " not":"" ); return 0; } -static struct parisc_device_id hppb_tbl[] = { +static const struct parisc_device_id hppb_tbl[] __initconst = { { HPHW_BCPORT, HVERSION_REV_ANY_ID, 0x500, 0xc }, /* E25 and K */ { HPHW_BCPORT, 0x0, 0x501, 0xc }, /* E35 */ { HPHW_BCPORT, 0x0, 0x502, 0xc }, /* E45 */ @@ -89,7 +87,7 @@ static struct parisc_device_id hppb_tbl[] = { { 0, } }; -static struct parisc_driver hppb_driver = { +static struct parisc_driver hppb_driver __refdata = { .name = "gecko_boa", .id_table = hppb_tbl, .probe = hppb_probe, @@ -98,9 +96,10 @@ static struct parisc_driver hppb_driver = { /** * hppb_init - HP-PB bus initialization procedure. * - * Register this driver. + * Register this driver. */ -void __init hppb_init(void) +static int __init hppb_init(void) { - register_parisc_driver(&hppb_driver); + return register_parisc_driver(&hppb_driver); } +arch_initcall(hppb_init); diff --git a/drivers/parisc/iommu-helpers.h b/drivers/parisc/iommu-helpers.h index 8c33491b21fe..0691884f5095 100644 --- a/drivers/parisc/iommu-helpers.h +++ b/drivers/parisc/iommu-helpers.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0 */ #include <linux/prefetch.h> /** @@ -13,13 +14,13 @@ static inline unsigned int iommu_fill_pdir(struct ioc *ioc, struct scatterlist *startsg, int nents, unsigned long hint, - void (*iommu_io_pdir_entry)(u64 *, space_t, unsigned long, + void (*iommu_io_pdir_entry)(__le64 *, space_t, phys_addr_t, unsigned long)) { struct scatterlist *dma_sg = startsg; /* pointer to current DMA */ unsigned int n_mappings = 0; unsigned long dma_offset = 0, dma_len = 0; - u64 *pdirp = NULL; + __le64 *pdirp = NULL; /* Horrible hack. For efficiency's sake, dma_sg starts one * entry below the true start (it is immediately incremented @@ -27,12 +28,12 @@ iommu_fill_pdir(struct ioc *ioc, struct scatterlist *startsg, int nents, dma_sg--; while (nents-- > 0) { - unsigned long vaddr; + phys_addr_t paddr; long size; - DBG_RUN_SG(" %d : %08lx/%05x %08lx/%05x\n", nents, - (unsigned long)sg_dma_address(startsg), cnt, - sg_virt_addr(startsg), startsg->length + DBG_RUN_SG(" %d : %08lx %p/%05x\n", nents, + (unsigned long)sg_dma_address(startsg), + sg_virt(startsg), startsg->length ); @@ -66,7 +67,7 @@ iommu_fill_pdir(struct ioc *ioc, struct scatterlist *startsg, int nents, BUG_ON(pdirp == NULL); - vaddr = sg_virt_addr(startsg); + paddr = sg_phys(startsg); sg_dma_len(dma_sg) += startsg->length; size = startsg->length + dma_offset; dma_offset = 0; @@ -75,8 +76,8 @@ iommu_fill_pdir(struct ioc *ioc, struct scatterlist *startsg, int nents, #endif do { iommu_io_pdir_entry(pdirp, KERNEL_SPACE, - vaddr, hint); - vaddr += IOVP_SIZE; + paddr, hint); + paddr += IOVP_SIZE; size -= IOVP_SIZE; pdirp++; } while(unlikely(size > 0)); @@ -104,7 +105,11 @@ iommu_coalesce_chunks(struct ioc *ioc, struct device *dev, struct scatterlist *contig_sg; /* contig chunk head */ unsigned long dma_offset, dma_len; /* start/len of DMA stream */ unsigned int n_mappings = 0; - unsigned int max_seg_size = dma_get_max_seg_size(dev); + unsigned int max_seg_size = min(dma_get_max_seg_size(dev), + (unsigned)DMA_CHUNK_SIZE); + unsigned int max_seg_boundary = dma_get_seg_boundary(dev) + 1; + if (max_seg_boundary) /* check if the addition above didn't overflow */ + max_seg_size = min(max_seg_size, max_seg_boundary); while (nents > 0) { @@ -113,7 +118,7 @@ iommu_coalesce_chunks(struct ioc *ioc, struct device *dev, */ contig_sg = startsg; dma_len = startsg->length; - dma_offset = sg_virt_addr(startsg) & ~IOVP_MASK; + dma_offset = startsg->offset; /* PARANOID: clear entries */ sg_dma_address(startsg) = 0; @@ -124,14 +129,13 @@ iommu_coalesce_chunks(struct ioc *ioc, struct device *dev, ** it's always looking one "ahead". */ while(--nents > 0) { - unsigned long prevstartsg_end, startsg_end; + unsigned long prev_end, sg_start; - prevstartsg_end = sg_virt_addr(startsg) + - startsg->length; + prev_end = (unsigned long)sg_virt(startsg) + + startsg->length; startsg++; - startsg_end = sg_virt_addr(startsg) + - startsg->length; + sg_start = (unsigned long)sg_virt(startsg); /* PARANOID: clear entries */ sg_dma_address(startsg) = 0; @@ -139,21 +143,21 @@ iommu_coalesce_chunks(struct ioc *ioc, struct device *dev, /* ** First make sure current dma stream won't - ** exceed DMA_CHUNK_SIZE if we coalesce the + ** exceed max_seg_size if we coalesce the ** next entry. */ - if(unlikely(ALIGN(dma_len + dma_offset + startsg->length, - IOVP_SIZE) > DMA_CHUNK_SIZE)) - break; - - if (startsg->length + dma_len > max_seg_size) + if (unlikely(ALIGN(dma_len + dma_offset + startsg->length, IOVP_SIZE) > + max_seg_size)) break; /* - ** Next see if we can append the next chunk (i.e. - ** it must end on one page and begin on another + * Next see if we can append the next chunk (i.e. + * it must end on one page and begin on another, or + * it must start on the same address as the previous + * entry ended. */ - if (unlikely(((prevstartsg_end | sg_virt_addr(startsg)) & ~PAGE_MASK) != 0)) + if (unlikely((prev_end != sg_start) || + ((prev_end | sg_start) & ~PAGE_MASK))) break; dma_len += startsg->length; diff --git a/drivers/parisc/iommu.h b/drivers/parisc/iommu.h new file mode 100644 index 000000000000..240059cd8185 --- /dev/null +++ b/drivers/parisc/iommu.h @@ -0,0 +1,55 @@ +#ifndef _IOMMU_H +#define _IOMMU_H 1 + +#include <linux/pci.h> + +struct parisc_device; +struct ioc; + +static inline struct pci_hba_data *parisc_walk_tree(struct device *dev) +{ + struct device *otherdev; + + if (likely(dev->platform_data)) + return dev->platform_data; + + /* OK, just traverse the bus to find it */ + for (otherdev = dev->parent; + otherdev; + otherdev = otherdev->parent) { + if (otherdev->platform_data) { + dev->platform_data = otherdev->platform_data; + break; + } + } + + return dev->platform_data; +} + +static inline struct ioc *GET_IOC(struct device *dev) +{ + struct pci_hba_data *pdata = parisc_walk_tree(dev); + + if (!pdata) + return NULL; + return pdata->iommu; +} + +#ifdef CONFIG_IOMMU_CCIO +void *ccio_get_iommu(const struct parisc_device *dev); +int ccio_request_resource(const struct parisc_device *dev, + struct resource *res); +int ccio_allocate_resource(const struct parisc_device *dev, + struct resource *res, unsigned long size, + unsigned long min, unsigned long max, unsigned long align); +#else /* !CONFIG_IOMMU_CCIO */ +#define ccio_get_iommu(dev) NULL +#define ccio_request_resource(dev, res) insert_resource(&iomem_resource, res) +#define ccio_allocate_resource(dev, res, size, min, max, align) \ + allocate_resource(&iomem_resource, res, size, min, max, \ + align, NULL, NULL) +#endif /* !CONFIG_IOMMU_CCIO */ + +void *sba_get_iommu(struct parisc_device *dev); + +#endif /* _IOMMU_H */ diff --git a/drivers/parisc/iosapic.c b/drivers/parisc/iosapic.c index e79e006eb9ab..a4011461189b 100644 --- a/drivers/parisc/iosapic.c +++ b/drivers/parisc/iosapic.c @@ -1,13 +1,10 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* ** I/O Sapic Driver - PCI interrupt line support ** ** (c) Copyright 1999 Grant Grundler ** (c) Copyright 1999 Hewlett-Packard Company ** -** 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. ** ** The I/O sapic driver manages the Interrupt Redirection Table which is ** the control logic to convert PCI line based interrupts into a Message @@ -126,21 +123,10 @@ ** o disable IRdT - call disable_irq(vector[line]->processor_irq) */ - -/* FIXME: determine which include files are really needed */ -#include <linux/types.h> -#include <linux/kernel.h> -#include <linux/spinlock.h> #include <linux/pci.h> -#include <linux/init.h> -#include <linux/slab.h> -#include <linux/interrupt.h> -#include <asm/byteorder.h> /* get in-line asm for swab */ #include <asm/pdc.h> #include <asm/pdcpat.h> -#include <asm/page.h> -#include <asm/io.h> /* read/write functions */ #ifdef CONFIG_SUPERIO #include <asm/superio.h> #endif @@ -216,9 +202,9 @@ static inline void iosapic_write(void __iomem *iosapic, unsigned int reg, u32 va static DEFINE_SPINLOCK(iosapic_lock); -static inline void iosapic_eoi(void __iomem *addr, unsigned int data) +static inline void iosapic_eoi(__le32 __iomem *addr, __le32 data) { - __raw_writel(data, addr); + __raw_writel((__force u32)data, addr); } /* @@ -235,16 +221,7 @@ static size_t irt_num_entry; static struct irt_entry *iosapic_alloc_irt(int num_entries) { - unsigned long a; - - /* The IRT needs to be 8-byte aligned for the PDC call. - * Normally kmalloc would guarantee larger alignment, but - * if CONFIG_DEBUG_SLAB is enabled, then we can get only - * 4-byte alignment on 32-bit kernels - */ - a = (unsigned long)kmalloc(sizeof(struct irt_entry) * num_entries + 8, GFP_KERNEL); - a = (a + 7UL) & ~7UL; - return (struct irt_entry *)a; + return kcalloc(num_entries, sizeof(struct irt_entry), GFP_KERNEL); } /** @@ -371,13 +348,10 @@ iosapic_load_irt(unsigned long cell_num, struct irt_entry **irt) } - -void __init iosapic_init(void) +static int __init iosapic_init(void) { unsigned long cell = 0; - DBG("iosapic_init()\n"); - #ifdef __LP64__ if (is_pdc_pat()) { int status; @@ -394,7 +368,10 @@ void __init iosapic_init(void) irt_num_entry = iosapic_load_irt(cell, &irt_cell); if (irt_num_entry == 0) irt_cell = NULL; /* old PDC w/o iosapic */ + + return 0; } +arch_initcall(iosapic_init); /* @@ -691,7 +668,7 @@ static int iosapic_set_affinity_irq(struct irq_data *d, if (dest_cpu < 0) return -1; - cpumask_copy(d->affinity, cpumask_of(dest_cpu)); + irq_data_update_affinity(d, cpumask_of(dest_cpu)); vi->txn_addr = txn_affinity_addr(d->irq, dest_cpu); spin_lock_irqsave(&iosapic_lock, flags); @@ -811,18 +788,28 @@ int iosapic_fixup_irq(void *isi_obj, struct pci_dev *pcidev) return pcidev->irq; } -static struct iosapic_info *first_isi = NULL; +static struct iosapic_info *iosapic_list; #ifdef CONFIG_64BIT -int iosapic_serial_irq(int num) +int iosapic_serial_irq(struct parisc_device *dev) { - struct iosapic_info *isi = first_isi; - struct irt_entry *irte = NULL; /* only used if PAT PDC */ + struct iosapic_info *isi; + struct irt_entry *irte; struct vector_info *vi; - int isi_line; /* line used by device */ + int cnt; + int intin; + + intin = (dev->mod_info >> 24) & 15; /* lookup IRT entry for isi/slot/pin set */ - irte = &irt_cell[num]; + for (cnt = 0; cnt < irt_num_entry; cnt++) { + irte = &irt_cell[cnt]; + if (COMPARE_IRTE_ADDR(irte, dev->mod0) && + irte->dest_iosapic_intin == intin) + break; + } + if (cnt >= irt_num_entry) + return 0; /* no irq found, force polling */ DBG_IRT("iosapic_serial_irq(): irte %p %x %x %x %x %x %x %x %x\n", irte, @@ -834,11 +821,17 @@ int iosapic_serial_irq(int num) irte->src_seg_id, irte->dest_iosapic_intin, (u32) irte->dest_iosapic_addr); - isi_line = irte->dest_iosapic_intin; + + /* search for iosapic */ + for (isi = iosapic_list; isi; isi = isi->isi_next) + if (isi->isi_hpa == dev->mod0) + break; + if (!isi) + return 0; /* no iosapic found, force polling */ /* get vector info for this input line */ - vi = isi->isi_vector + isi_line; - DBG_IRT("iosapic_serial_irq: line %d vi 0x%p\n", isi_line, vi); + vi = isi->isi_vector + intin; + DBG_IRT("iosapic_serial_irq: line %d vi 0x%p\n", iosapic_intin, vi); /* If this IRQ line has already been setup, skip it */ if (vi->irte) @@ -873,6 +866,7 @@ int iosapic_serial_irq(int num) return vi->txn_irq; } +EXPORT_SYMBOL(iosapic_serial_irq); #endif @@ -896,7 +890,7 @@ iosapic_rd_version(struct iosapic_info *isi) ** o allocate and initialize isi_vector[] ** o allocate irq region */ -void *iosapic_register(unsigned long hpa) +void *iosapic_register(unsigned long hpa, void __iomem *vaddr) { struct iosapic_info *isi = NULL; struct irt_entry *irte = irt_cell; @@ -925,7 +919,7 @@ void *iosapic_register(unsigned long hpa) return NULL; } - isi->addr = ioremap_nocache(hpa, 4096); + isi->addr = vaddr; isi->isi_hpa = hpa; isi->isi_version = iosapic_rd_version(isi); isi->isi_num_vectors = IOSAPIC_IRDT_MAX_ENTRY(isi->isi_version) + 1; @@ -941,8 +935,8 @@ void *iosapic_register(unsigned long hpa) vip->irqline = (unsigned char) cnt; vip->iosapic = isi; } - if (!first_isi) - first_isi = isi; + isi->isi_next = iosapic_list; + iosapic_list = isi; return isi; } diff --git a/drivers/parisc/iosapic_private.h b/drivers/parisc/iosapic_private.h index 6e05e30a2450..bd8ff40162b4 100644 --- a/drivers/parisc/iosapic_private.h +++ b/drivers/parisc/iosapic_private.h @@ -1,24 +1,10 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ /* * Private structs/constants for PARISC IOSAPIC support * * Copyright (C) 2000 Hewlett Packard (Grant Grundler) * Copyright (C) 2000,2003 Grant Grundler (grundler at parisc-linux.org) * Copyright (C) 2002 Matthew Wilcox (willy at parisc-linux.org) - * - * - * 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 program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ /* @@ -132,8 +118,8 @@ struct iosapic_irt { struct vector_info { struct iosapic_info *iosapic; /* I/O SAPIC this vector is on */ struct irt_entry *irte; /* IRT entry */ - u32 __iomem *eoi_addr; /* precalculate EOI reg address */ - u32 eoi_data; /* IA64: ? PA: swapped txn_data */ + __le32 __iomem *eoi_addr; /* precalculate EOI reg address */ + __le32 eoi_data; /* IA64: ? PA: swapped txn_data */ int txn_irq; /* virtual IRQ number for processor */ ulong txn_addr; /* IA64: id_eid PA: partial HPA */ u32 txn_data; /* CPU interrupt bit */ diff --git a/drivers/parisc/lasi.c b/drivers/parisc/lasi.c index e65727ca9fc0..73c93e9cfa51 100644 --- a/drivers/parisc/lasi.c +++ b/drivers/parisc/lasi.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* * LASI Device Driver * @@ -5,11 +6,6 @@ * Portions (c) Copyright 1999 The Puffin Group Inc. * Portions (c) Copyright 1999 Hewlett-Packard * - * 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. - * * by Alan Cox <alan@redhat.com> and * Alex deVries <alex@onefishtwo.ca> */ @@ -21,6 +17,7 @@ #include <linux/module.h> #include <linux/pm.h> #include <linux/types.h> +#include <linux/reboot.h> #include <asm/io.h> #include <asm/hardware.h> @@ -149,25 +146,20 @@ static void __init lasi_led_init(unsigned long lasi_hpa) * 1 to PWR_ON_L in the Power Control Register * */ - -static unsigned long lasi_power_off_hpa __read_mostly; - -static void lasi_power_off(void) +static int lasi_power_off(struct sys_off_data *data) { - unsigned long datareg; + struct gsc_asic *lasi = data->cb_data; - /* calculate addr of the Power Control Register */ - datareg = lasi_power_off_hpa + 0x0000C000; + /* Power down the machine via Power Control Register */ + gsc_writel(0x02, lasi->hpa + 0x0000C000); - /* Power down the machine */ - gsc_writel(0x02, datareg); + /* might not be reached: */ + return NOTIFY_DONE; } static int __init lasi_init_chip(struct parisc_device *dev) { - extern void (*chassis_power_off)(void); struct gsc_asic *lasi; - struct gsc_irq gsc_irq; int ret; lasi = kzalloc(sizeof(*lasi), GFP_KERNEL); @@ -189,7 +181,7 @@ static int __init lasi_init_chip(struct parisc_device *dev) lasi_init_irq(lasi); /* the IRQ lasi should use */ - dev->irq = gsc_alloc_irq(&gsc_irq); + dev->irq = gsc_alloc_irq(&lasi->gsc_irq); if (dev->irq < 0) { printk(KERN_ERR "%s(): cannot get GSC irq\n", __func__); @@ -197,9 +189,9 @@ static int __init lasi_init_chip(struct parisc_device *dev) return -EBUSY; } - lasi->eim = ((u32) gsc_irq.txn_addr) | gsc_irq.txn_data; + lasi->eim = ((u32) lasi->gsc_irq.txn_addr) | lasi->gsc_irq.txn_data; - ret = request_irq(gsc_irq.irq, gsc_asic_intr, 0, "lasi", lasi); + ret = request_irq(lasi->gsc_irq.irq, gsc_asic_intr, 0, "lasi", lasi); if (ret < 0) { kfree(lasi); return ret; @@ -217,23 +209,27 @@ static int __init lasi_init_chip(struct parisc_device *dev) gsc_fixup_irqs(dev, lasi, lasi_choose_irq); - /* initialize the power off function */ - /* FIXME: Record the LASI HPA for the power off function. This should - * ensure that only the first LASI (the one controlling the power off) - * should set the HPA here */ - lasi_power_off_hpa = lasi->hpa; - chassis_power_off = lasi_power_off; - + /* register the LASI power off function */ + register_sys_off_handler(SYS_OFF_MODE_POWER_OFF, + SYS_OFF_PRIO_DEFAULT, lasi_power_off, lasi); + return ret; } -static struct parisc_device_id lasi_tbl[] = { +static struct parisc_device_id lasi_tbl[] __initdata = { { HPHW_BA, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, 0x00081 }, { 0, } }; +MODULE_DEVICE_TABLE(parisc, lasi_tbl); -struct parisc_driver lasi_driver = { +static struct parisc_driver lasi_driver __refdata = { .name = "lasi", .id_table = lasi_tbl, .probe = lasi_init_chip, }; + +static int __init lasi_init(void) +{ + return register_parisc_driver(&lasi_driver); +} +arch_initcall(lasi_init); diff --git a/drivers/parisc/lba_pci.c b/drivers/parisc/lba_pci.c index 19f6f70c67d3..3fc3765fddaa 100644 --- a/drivers/parisc/lba_pci.c +++ b/drivers/parisc/lba_pci.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* ** ** PCI Lower Bus Adapter (LBA) manager @@ -5,10 +6,6 @@ ** (c) Copyright 1999,2000 Grant Grundler ** (c) Copyright 1999,2000 Hewlett-Packard Company ** -** 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 primarily provides access to PCI bus (config/IOport @@ -49,6 +46,8 @@ #include <asm/parisc-device.h> #include <asm/io.h> /* read/write stuff */ +#include "iommu.h" + #undef DEBUG_LBA /* general stuff */ #undef DEBUG_LBA_PORT /* debug I/O Port access */ #undef DEBUG_LBA_CFG /* debug Config Space Access (ie PCI Bus walk) */ @@ -109,10 +108,10 @@ static u32 lba_t32; #define LBA_SKIP_PROBE(d) ((d)->flags & LBA_FLAG_SKIP_PROBE) - -/* Looks nice and keeps the compiler happy */ -#define LBA_DEV(d) ((struct lba_device *) (d)) - +static inline struct lba_device *LBA_DEV(struct pci_hba_data *hba) +{ + return container_of(hba, struct lba_device, hba); +} /* ** Only allow 8 subsidiary busses per LBA @@ -405,7 +404,7 @@ static int elroy_cfg_read(struct pci_bus *bus, unsigned int devfn, int pos, int static void lba_wr_cfg(struct lba_device *d, u32 tok, u8 reg, u32 data, u32 size) { - int error = 0; + int error __maybe_unused = 0; u32 arb_mask = 0; u32 error_config = 0; u32 status_control = 0; @@ -624,6 +623,10 @@ extend_lmmio_len(unsigned long start, unsigned long end, unsigned long lba_len) { struct resource *tmp; + /* exit if not a C8000 */ + if (boot_cpu_data.cpu_type < mako) + return end; + pr_debug("LMMIO mismatch: PAT length = 0x%lx, MASK register = 0x%lx\n", end - start, lba_len); @@ -631,10 +634,6 @@ extend_lmmio_len(unsigned long start, unsigned long end, unsigned long lba_len) pr_debug("LBA: lmmio_space [0x%lx-0x%lx] - original\n", start, end); - if (boot_cpu_data.cpu_type < mako) { - pr_info("LBA: Not a C8000 system - not extending LMMIO range.\n"); - return end; - } end += lba_len; if (end < start) /* fix overflow */ @@ -665,6 +664,42 @@ extend_lmmio_len(unsigned long start, unsigned long end, unsigned long lba_len) #define truncate_pat_collision(r,n) (0) #endif +static void pcibios_allocate_bridge_resources(struct pci_dev *dev) +{ + int idx; + struct resource *r; + + for (idx = PCI_BRIDGE_RESOURCES; idx < PCI_NUM_RESOURCES; idx++) { + r = &dev->resource[idx]; + if (!r->flags) + continue; + if (r->parent) /* Already allocated */ + continue; + if (!r->start || pci_claim_bridge_resource(dev, idx) < 0) { + /* + * Something is wrong with the region. + * Invalidate the resource to prevent + * child resource allocations in this + * range. + */ + r->start = r->end = 0; + r->flags = 0; + } + } +} + +static void pcibios_allocate_bus_resources(struct pci_bus *bus) +{ + struct pci_bus *child; + + /* Depth-First Search on bus tree */ + if (bus->self) + pcibios_allocate_bridge_resources(bus->self); + list_for_each_entry(child, &bus->children, node) + pcibios_allocate_bus_resources(child); +} + + /* ** The algorithm is generic code. ** But it needs to access local data structures to get the IRQ base. @@ -691,12 +726,11 @@ lba_fixup_bus(struct pci_bus *bus) ** pci_alloc_primary_bus() mangles this. */ if (bus->parent) { - int i; /* PCI-PCI Bridge */ pci_read_bridge_bases(bus); - for (i = PCI_BRIDGE_RESOURCES; i < PCI_NUM_RESOURCES; i++) { - pci_claim_resource(bus->self, i); - } + + /* check and allocate bridge resources */ + pcibios_allocate_bus_resources(bus); } else { /* Host-PCI Bridge */ int err; @@ -791,8 +825,10 @@ lba_fixup_bus(struct pci_bus *bus) /* ** P2PB's have no IRQs. ignore them. */ - if ((dev->class >> 8) == PCI_CLASS_BRIDGE_PCI) + if ((dev->class >> 8) == PCI_CLASS_BRIDGE_PCI) { + pcibios_init_bridge(dev); continue; + } /* Adjust INTERRUPT_LINE for this dev */ iosapic_fixup_irq(ldev->iosapic_obj, dev); @@ -982,7 +1018,7 @@ static void lba_pat_resources(struct parisc_device *pa_dev, struct lba_device *lba_dev) { unsigned long bytecnt; - long io_count; + long io_count __maybe_unused; long status; /* PDC return status */ long pa_count; pdc_pat_cell_mod_maddr_block_t *pa_pdc_cell; /* PA_VIEW */ @@ -1098,7 +1134,7 @@ lba_pat_resources(struct parisc_device *pa_dev, struct lba_device *lba_dev) ** Postable I/O port space is per PCI host adapter. ** base of 64MB PIOP region */ - lba_dev->iop_base = ioremap_nocache(p->start, 64 * 1024 * 1024); + lba_dev->iop_base = ioremap(p->start, 64 * 1024 * 1024); sprintf(lba_dev->hba.io_name, "PCI%02x Ports", (int)lba_dev->hba.bus_num.start); @@ -1128,10 +1164,6 @@ lba_pat_resources(struct parisc_device *pa_dev, struct lba_device *lba_dev) #endif /* CONFIG_64BIT */ -extern void sba_distributed_lmmio(struct parisc_device *, struct resource *); -extern void sba_directed_lmmio(struct parisc_device *, struct resource *); - - static void lba_legacy_resources(struct parisc_device *pa_dev, struct lba_device *lba_dev) { @@ -1236,7 +1268,7 @@ lba_legacy_resources(struct parisc_device *pa_dev, struct lba_device *lba_dev) r->flags = IORESOURCE_MEM; /* mmio_mask also clears Enable bit */ r->start &= mmio_mask; - r->start = PCI_HOST_ADDR(HBA_DATA(lba_dev), r->start); + r->start = PCI_HOST_ADDR(&lba_dev->hba, r->start); rsize = ~ READ_REG32(lba_dev->hba.base_addr + LBA_LMMIO_MASK); /* @@ -1282,7 +1314,7 @@ lba_legacy_resources(struct parisc_device *pa_dev, struct lba_device *lba_dev) r->flags = IORESOURCE_MEM; /* mmio_mask also clears Enable bit */ r->start &= mmio_mask; - r->start = PCI_HOST_ADDR(HBA_DATA(lba_dev), r->start); + r->start = PCI_HOST_ADDR(&lba_dev->hba, r->start); rsize = READ_REG32(lba_dev->hba.base_addr + LBA_ELMMIO_MASK); r->end = r->start + ~rsize; } @@ -1364,9 +1396,27 @@ lba_hw_init(struct lba_device *d) WRITE_REG32(stat, d->hba.base_addr + LBA_ERROR_CONFIG); } - /* Set HF mode as the default (vs. -1 mode). */ + + /* + * Hard Fail vs. Soft Fail on PCI "Master Abort". + * + * "Master Abort" means the MMIO transaction timed out - usually due to + * the device not responding to an MMIO read. We would like HF to be + * enabled to find driver problems, though it means the system will + * crash with a HPMC. + * + * In SoftFail mode "~0L" is returned as a result of a timeout on the + * pci bus. This is like how PCI busses on x86 and most other + * architectures behave. In order to increase compatibility with + * existing (x86) PCI hardware and existing Linux drivers we enable + * Soft Faul mode on PA-RISC now too. + */ stat = READ_REG32(d->hba.base_addr + LBA_STAT_CTL); +#if defined(ENABLE_HARDFAIL) WRITE_REG32(stat | HF_ENABLE, d->hba.base_addr + LBA_STAT_CTL); +#else + WRITE_REG32(stat & ~HF_ENABLE, d->hba.base_addr + LBA_STAT_CTL); +#endif /* ** Writing a zero to STAT_CTL.rf (bit 0) will clear reset signal @@ -1422,9 +1472,13 @@ lba_driver_probe(struct parisc_device *dev) u32 func_class; void *tmp_obj; char *version; - void __iomem *addr = ioremap_nocache(dev->hpa.start, 4096); + void __iomem *addr; int max; + addr = ioremap(dev->hpa.start, 4096); + if (addr == NULL) + return -ENOMEM; + /* Read HW Rev First */ func_class = READ_REG32(addr + LBA_FCLASS); @@ -1481,7 +1535,8 @@ lba_driver_probe(struct parisc_device *dev) } /* Tell I/O SAPIC driver we have a IRQ handler/region. */ - tmp_obj = iosapic_register(dev->hpa.start + LBA_IOSAPIC_BASE); + tmp_obj = iosapic_register(dev->hpa.start + LBA_IOSAPIC_BASE, + addr + LBA_IOSAPIC_BASE); /* NOTE: PCI devices (e.g. 103c:1005 graphics card) which don't ** have an IRT entry will get NULL back from iosapic code. @@ -1505,7 +1560,7 @@ lba_driver_probe(struct parisc_device *dev) /* ------------ Second : initialize common stuff ---------- */ pci_bios = &lba_bios_ops; - pcibios_register_hba(HBA_DATA(lba_dev)); + pcibios_register_hba(&lba_dev->hba); spin_lock_init(&lba_dev->lba_lock); if (lba_hw_init(lba_dev)) @@ -1521,7 +1576,7 @@ lba_driver_probe(struct parisc_device *dev) } else { if (!astro_iop_base) { /* Sprockets PDC uses NPIOP region */ - astro_iop_base = ioremap_nocache(LBA_PORT_BASE, 64 * 1024); + astro_iop_base = ioremap(LBA_PORT_BASE, 64 * 1024); pci_port = &lba_astro_port_ops; } @@ -1557,8 +1612,11 @@ lba_driver_probe(struct parisc_device *dev) if (lba_dev->hba.lmmio_space.flags) pci_add_resource_offset(&resources, &lba_dev->hba.lmmio_space, lba_dev->hba.lmmio_space_offset); - if (lba_dev->hba.gmmio_space.flags) - pci_add_resource(&resources, &lba_dev->hba.gmmio_space); + if (lba_dev->hba.gmmio_space.flags) { + /* Not registering GMMIO space - according to docs it's not + * even used on HP-UX. */ + /* pci_add_resource(&resources, &lba_dev->hba.gmmio_space); */ + } pci_add_resource(&resources, &lba_dev->hba.bus_num); @@ -1590,7 +1648,6 @@ lba_driver_probe(struct parisc_device *dev) lba_dump_res(&lba_dev->hba.lmmio_space, 2); #endif } - pci_enable_bridges(lba_bus); /* ** Once PCI register ops has walked the bus, access to config @@ -1608,14 +1665,14 @@ lba_driver_probe(struct parisc_device *dev) return 0; } -static struct parisc_device_id lba_tbl[] = { +static const struct parisc_device_id lba_tbl[] __initconst = { { HPHW_BRIDGE, HVERSION_REV_ANY_ID, ELROY_HVERS, 0xa }, { HPHW_BRIDGE, HVERSION_REV_ANY_ID, MERCURY_HVERS, 0xa }, { HPHW_BRIDGE, HVERSION_REV_ANY_ID, QUICKSILVER_HVERS, 0xa }, { 0, } }; -static struct parisc_driver lba_driver = { +static struct parisc_driver lba_driver __refdata = { .name = MODULE_NAME, .id_table = lba_tbl, .probe = lba_driver_probe, @@ -1625,10 +1682,11 @@ static struct parisc_driver lba_driver = { ** One time initialization to let the world know the LBA was found. ** Must be called exactly once before pci_init(). */ -void __init lba_init(void) +static int __init lba_init(void) { - register_parisc_driver(&lba_driver); + return register_parisc_driver(&lba_driver); } +arch_initcall(lba_init); /* ** Initialize the IBASE/IMASK registers for LBA (Elroy). @@ -1637,7 +1695,7 @@ void __init lba_init(void) */ void lba_set_iregs(struct parisc_device *lba, u32 ibase, u32 imask) { - void __iomem * base_addr = ioremap_nocache(lba->hpa.start, 4096); + void __iomem * base_addr = ioremap(lba->hpa.start, 4096); imask <<= 2; /* adjust for hints - 2 more bits */ @@ -1651,3 +1709,48 @@ void lba_set_iregs(struct parisc_device *lba, u32 ibase, u32 imask) iounmap(base_addr); } + +/* + * The design of the Diva management card in rp34x0 machines (rp3410, rp3440) + * seems rushed, so that many built-in components simply don't work. + * The following quirks disable the serial AUX port and the built-in ATI RV100 + * Radeon 7000 graphics card which both don't have any external connectors and + * thus are useless, and even worse, e.g. the AUX port occupies ttyS0 and as + * such makes those machines the only PARISC machines on which we can't use + * ttyS0 as boot console. + */ +static void quirk_diva_ati_card(struct pci_dev *dev) +{ + if (dev->subsystem_vendor != PCI_VENDOR_ID_HP || + dev->subsystem_device != 0x1292) + return; + + dev_info(&dev->dev, "Hiding Diva built-in ATI card"); + dev->device = 0; +} +DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_RADEON_QY, + quirk_diva_ati_card); + +static void quirk_diva_aux_disable(struct pci_dev *dev) +{ + if (dev->subsystem_vendor != PCI_VENDOR_ID_HP || + dev->subsystem_device != 0x1291) + return; + + dev_info(&dev->dev, "Hiding Diva built-in AUX serial device"); + dev->device = 0; +} +DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_DIVA_AUX, + quirk_diva_aux_disable); + +static void quirk_tosca_aux_disable(struct pci_dev *dev) +{ + if (dev->subsystem_vendor != PCI_VENDOR_ID_HP || + dev->subsystem_device != 0x104a) + return; + + dev_info(&dev->dev, "Hiding Tosca secondary built-in AUX serial device"); + dev->device = 0; +} +DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_DIVA, + quirk_tosca_aux_disable); diff --git a/drivers/parisc/led.c b/drivers/parisc/led.c index b48243131993..016c9d5a60a8 100644 --- a/drivers/parisc/led.c +++ b/drivers/parisc/led.c @@ -1,81 +1,45 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* - * Chassis LCD/LED driver for HP-PARISC workstations + * Chassis LCD/LED driver for HP-PARISC workstations * - * (c) Copyright 2000 Red Hat Software - * (c) Copyright 2000 Helge Deller <hdeller@redhat.com> - * (c) Copyright 2001-2009 Helge Deller <deller@gmx.de> - * (c) Copyright 2001 Randolph Chung <tausq@debian.org> + * (c) Copyright 2000 Red Hat Software + * (c) Copyright 2000 Helge Deller <hdeller@redhat.com> + * (c) Copyright 2001 Randolph Chung <tausq@debian.org> + * (c) Copyright 2000-2023 Helge Deller <deller@gmx.de> * - * 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. + * The control of the LEDs and LCDs on PARISC machines has to be done + * completely in software. * - * TODO: - * - speed-up calculations with inlined assembler - * - interface to write to second row of LCD from /proc (if technically possible) - * - * Changes: - * - Audit copy_from_user in led_proc_write. - * Daniele Bellucci <bellucda@tiscali.it> - * - Switch from using a tasklet to a work queue, so the led_LCD_driver - * can sleep. - * David Pye <dmp@davidmpye.dyndns.org> + * The LEDs can be configured at runtime in /sys/class/leds/ */ #include <linux/module.h> -#include <linux/stddef.h> /* for offsetof() */ #include <linux/init.h> #include <linux/types.h> #include <linux/ioport.h> #include <linux/utsname.h> #include <linux/capability.h> #include <linux/delay.h> -#include <linux/netdevice.h> -#include <linux/inetdevice.h> -#include <linux/in.h> -#include <linux/interrupt.h> -#include <linux/kernel_stat.h> #include <linux/reboot.h> -#include <linux/proc_fs.h> -#include <linux/seq_file.h> -#include <linux/ctype.h> -#include <linux/blkdev.h> -#include <linux/workqueue.h> -#include <linux/rcupdate.h> +#include <linux/uaccess.h> +#include <linux/leds.h> +#include <linux/platform_device.h> + #include <asm/io.h> #include <asm/processor.h> #include <asm/hardware.h> #include <asm/param.h> /* HZ */ #include <asm/led.h> #include <asm/pdc.h> -#include <asm/uaccess.h> - -/* The control of the LEDs and LCDs on PARISC-machines have to be done - completely in software. The necessary calculations are done in a work queue - task which is scheduled regularly, and since the calculations may consume a - relatively large amount of CPU time, some of the calculations can be - turned off with the following variables (controlled via procfs) */ - -static int led_type __read_mostly = -1; -static unsigned char lastleds; /* LED state from most recent update */ -static unsigned int led_heartbeat __read_mostly = 1; -static unsigned int led_diskio __read_mostly = 1; -static unsigned int led_lanrxtx __read_mostly = 1; -static char lcd_text[32] __read_mostly; -static char lcd_text_default[32] __read_mostly; -static int lcd_no_led_support __read_mostly = 0; /* KittyHawk doesn't support LED on its LCD */ - - -static struct workqueue_struct *led_wq; -static void led_work_func(struct work_struct *); -static DECLARE_DELAYED_WORK(led_task, led_work_func); - -#if 0 -#define DPRINTK(x) printk x -#else -#define DPRINTK(x) -#endif + +#define LED_HAS_LCD 1 +#define LED_HAS_LED 2 + +static unsigned char led_type; /* bitmask of LED_HAS_XXX */ +static unsigned char lastleds; /* LED state from most recent update */ +static unsigned char lcd_new_text; +static unsigned char lcd_text[20]; +static unsigned char lcd_no_led_support; /* KittyHawk doesn't support LED on its LCD */ struct lcd_block { unsigned char command; /* stores the command byte */ @@ -84,7 +48,7 @@ struct lcd_block { }; /* Structure returned by PDC_RETURN_CHASSIS_INFO */ -/* NOTE: we use unsigned long:16 two times, since the following member +/* NOTE: we use unsigned long:16 two times, since the following member lcd_cmd_reg_addr needs to be 64bit aligned on 64bit PA2.0-machines */ struct pdc_chassis_lcd_info_ret_block { unsigned long model:16; /* DISPLAY_MODEL_XXXX */ @@ -104,15 +68,15 @@ struct pdc_chassis_lcd_info_ret_block { /* LCD_CMD and LCD_DATA for KittyHawk machines */ -#define KITTYHAWK_LCD_CMD F_EXTEND(0xf0190000UL) /* 64bit-ready */ -#define KITTYHAWK_LCD_DATA (KITTYHAWK_LCD_CMD+1) +#define KITTYHAWK_LCD_CMD F_EXTEND(0xf0190000UL) +#define KITTYHAWK_LCD_DATA (KITTYHAWK_LCD_CMD + 1) -/* lcd_info is pre-initialized to the values needed to program KittyHawk LCD's +/* lcd_info is pre-initialized to the values needed to program KittyHawk LCD's * HP seems to have used Sharp/Hitachi HD44780 LCDs most of the time. */ static struct pdc_chassis_lcd_info_ret_block -lcd_info __attribute__((aligned(8))) __read_mostly = +lcd_info __attribute__((aligned(8))) = { - .model = DISPLAY_MODEL_LCD, + .model = DISPLAY_MODEL_NONE, .lcd_width = 16, .lcd_cmd_reg_addr = KITTYHAWK_LCD_CMD, .lcd_data_reg_addr = KITTYHAWK_LCD_DATA, @@ -121,163 +85,65 @@ lcd_info __attribute__((aligned(8))) __read_mostly = .reset_cmd2 = 0xc0, }; - /* direct access to some of the lcd_info variables */ -#define LCD_CMD_REG lcd_info.lcd_cmd_reg_addr -#define LCD_DATA_REG lcd_info.lcd_data_reg_addr +#define LCD_CMD_REG lcd_info.lcd_cmd_reg_addr +#define LCD_DATA_REG lcd_info.lcd_data_reg_addr #define LED_DATA_REG lcd_info.lcd_cmd_reg_addr /* LASI & ASP only */ -#define LED_HASLCD 1 -#define LED_NOLCD 0 - -/* The workqueue must be created at init-time */ -static int start_task(void) -{ - /* Display the default text now */ - if (led_type == LED_HASLCD) lcd_print( lcd_text_default ); - - /* KittyHawk has no LED support on its LCD */ - if (lcd_no_led_support) return 0; - - /* Create the work queue and queue the LED task */ - led_wq = create_singlethread_workqueue("led_wq"); - queue_delayed_work(led_wq, &led_task, 0); - - return 0; -} - -device_initcall(start_task); - /* ptr to LCD/LED-specific function */ -static void (*led_func_ptr) (unsigned char) __read_mostly; - -#ifdef CONFIG_PROC_FS -static int led_proc_show(struct seq_file *m, void *v) -{ - switch ((long)m->private) - { - case LED_NOLCD: - seq_printf(m, "Heartbeat: %d\n", led_heartbeat); - seq_printf(m, "Disk IO: %d\n", led_diskio); - seq_printf(m, "LAN Rx/Tx: %d\n", led_lanrxtx); - break; - case LED_HASLCD: - seq_printf(m, "%s\n", lcd_text); - break; - default: - return 0; - } - return 0; -} - -static int led_proc_open(struct inode *inode, struct file *file) -{ - return single_open(file, led_proc_show, PDE_DATA(inode)); -} +static void (*led_func_ptr) (unsigned char); -static ssize_t led_proc_write(struct file *file, const char *buf, - size_t count, loff_t *pos) +static void lcd_print_now(void) { - void *data = PDE_DATA(file_inode(file)); - char *cur, lbuf[32]; - int d; - - if (!capable(CAP_SYS_ADMIN)) - return -EACCES; - - if (count >= sizeof(lbuf)) - count = sizeof(lbuf)-1; - - if (copy_from_user(lbuf, buf, count)) - return -EFAULT; - lbuf[count] = 0; - - cur = lbuf; - - switch ((long)data) - { - case LED_NOLCD: - d = *cur++ - '0'; - if (d != 0 && d != 1) goto parse_error; - led_heartbeat = d; - - if (*cur++ != ' ') goto parse_error; + int i; + char *str = lcd_text; - d = *cur++ - '0'; - if (d != 0 && d != 1) goto parse_error; - led_diskio = d; + if (lcd_info.model != DISPLAY_MODEL_LCD) + return; - if (*cur++ != ' ') goto parse_error; + if (!lcd_new_text) + return; + lcd_new_text = 0; - d = *cur++ - '0'; - if (d != 0 && d != 1) goto parse_error; - led_lanrxtx = d; + /* Set LCD Cursor to 1st character */ + gsc_writeb(lcd_info.reset_cmd1, LCD_CMD_REG); + udelay(lcd_info.min_cmd_delay); - break; - case LED_HASLCD: - if (*cur && cur[strlen(cur)-1] == '\n') - cur[strlen(cur)-1] = 0; - if (*cur == 0) - cur = lcd_text_default; - lcd_print(cur); - break; - default: - return 0; + /* Print the string */ + for (i = 0; i < lcd_info.lcd_width; i++) { + gsc_writeb(*str ? *str++ : ' ', LCD_DATA_REG); + udelay(lcd_info.min_cmd_delay); } - - return count; - -parse_error: - if ((long)data == LED_NOLCD) - printk(KERN_CRIT "Parse error: expect \"n n n\" (n == 0 or 1) for heartbeat,\ndisk io and lan tx/rx indicators\n"); - return -EINVAL; } -static const struct file_operations led_proc_fops = { - .owner = THIS_MODULE, - .open = led_proc_open, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, - .write = led_proc_write, -}; - -static int __init led_create_procfs(void) +/** + * lcd_print() + * + * @str: string to show on the LCD. If NULL, print current string again. + * + * Displays the given string on the LCD-Display of newer machines. + */ +void lcd_print(const char *str) { - struct proc_dir_entry *proc_pdc_root = NULL; - struct proc_dir_entry *ent; - - if (led_type == -1) return -1; - - proc_pdc_root = proc_mkdir("pdc", 0); - if (!proc_pdc_root) return -1; - - if (!lcd_no_led_support) - { - ent = proc_create_data("led", S_IRUGO|S_IWUSR, proc_pdc_root, - &led_proc_fops, (void *)LED_NOLCD); /* LED */ - if (!ent) return -1; - } - - if (led_type == LED_HASLCD) - { - ent = proc_create_data("lcd", S_IRUGO|S_IWUSR, proc_pdc_root, - &led_proc_fops, (void *)LED_HASLCD); /* LCD */ - if (!ent) return -1; - } + /* copy display string to buffer for procfs */ + if (str) + strscpy(lcd_text, str, sizeof(lcd_text)); + lcd_new_text = 1; - return 0; + /* print now if LCD without any LEDs */ + if (led_type == LED_HAS_LCD) + lcd_print_now(); } -#endif -/* - ** - ** led_ASP_driver() - ** - */ #define LED_DATA 0x01 /* data to shift (0:on 1:off) */ #define LED_STROBE 0x02 /* strobe to clock data */ + +/** + * led_ASP_driver() - LED driver for the ASP controller chip + * + * @leds: bitmap representing the LED status + */ static void led_ASP_driver(unsigned char leds) { int i; @@ -292,11 +158,10 @@ static void led_ASP_driver(unsigned char leds) } } - -/* - ** - ** led_LASI_driver() - ** +/** + * led_LASI_driver() - LED driver for the LASI controller chip + * + * @leds: bitmap representing the LED status */ static void led_LASI_driver(unsigned char leds) { @@ -304,392 +169,295 @@ static void led_LASI_driver(unsigned char leds) gsc_writeb( leds, LED_DATA_REG ); } - -/* - ** - ** led_LCD_driver() - ** +/** + * led_LCD_driver() - LED & LCD driver for LCD chips + * + * @leds: bitmap representing the LED status */ static void led_LCD_driver(unsigned char leds) { - static int i; - static unsigned char mask[4] = { LED_HEARTBEAT, LED_DISK_IO, + static const unsigned char mask[4] = { + LED_HEARTBEAT, LED_DISK_IO, LED_LAN_RCV, LED_LAN_TX }; - - static struct lcd_block * blockp[4] = { + + static struct lcd_block * const blockp[4] = { &lcd_info.heartbeat, &lcd_info.disk_io, &lcd_info.lan_rcv, &lcd_info.lan_tx }; + static unsigned char latest_leds; + int i; - /* Convert min_cmd_delay to milliseconds */ - unsigned int msec_cmd_delay = 1 + (lcd_info.min_cmd_delay / 1000); - - for (i=0; i<4; ++i) - { - if ((leds & mask[i]) != (lastleds & mask[i])) - { - gsc_writeb( blockp[i]->command, LCD_CMD_REG ); - msleep(msec_cmd_delay); - - gsc_writeb( leds & mask[i] ? blockp[i]->on : - blockp[i]->off, LCD_DATA_REG ); - msleep(msec_cmd_delay); - } - } -} + for (i = 0; i < 4; ++i) { + if ((leds & mask[i]) == (latest_leds & mask[i])) + continue; + gsc_writeb( blockp[i]->command, LCD_CMD_REG ); + udelay(lcd_info.min_cmd_delay); -/* - ** - ** led_get_net_activity() - ** - ** calculate if there was TX- or RX-throughput on the network interfaces - ** (analog to dev_get_info() from net/core/dev.c) - ** - */ -static __inline__ int led_get_net_activity(void) -{ -#ifndef CONFIG_NET - return 0; -#else - static u64 rx_total_last, tx_total_last; - u64 rx_total, tx_total; - struct net_device *dev; - int retval; - - rx_total = tx_total = 0; - - /* we are running as a workqueue task, so we can use an RCU lookup */ - rcu_read_lock(); - for_each_netdev_rcu(&init_net, dev) { - const struct rtnl_link_stats64 *stats; - struct rtnl_link_stats64 temp; - struct in_device *in_dev = __in_dev_get_rcu(dev); - if (!in_dev || !in_dev->ifa_list) - continue; - if (ipv4_is_loopback(in_dev->ifa_list->ifa_local)) - continue; - stats = dev_get_stats(dev, &temp); - rx_total += stats->rx_packets; - tx_total += stats->tx_packets; + gsc_writeb( leds & mask[i] ? blockp[i]->on : + blockp[i]->off, LCD_DATA_REG ); + udelay(lcd_info.min_cmd_delay); } - rcu_read_unlock(); + latest_leds = leds; - retval = 0; + lcd_print_now(); +} - if (rx_total != rx_total_last) { - rx_total_last = rx_total; - retval |= LED_LAN_RCV; - } - if (tx_total != tx_total_last) { - tx_total_last = tx_total; - retval |= LED_LAN_TX; - } +/** + * lcd_system_halt() + * + * @nb: pointer to the notifier_block structure + * @event: the event (SYS_RESTART, SYS_HALT or SYS_POWER_OFF) + * @buf: pointer to a buffer (not used) + * + * Called by the reboot notifier chain at shutdown. Stops all + * LED/LCD activities. + */ +static int lcd_system_halt(struct notifier_block *nb, unsigned long event, void *buf) +{ + const char *txt; - return retval; -#endif -} + switch (event) { + case SYS_RESTART: txt = "SYSTEM RESTART"; + break; + case SYS_HALT: txt = "SYSTEM HALT"; + break; + case SYS_POWER_OFF: txt = "SYSTEM POWER OFF"; + break; + default: return NOTIFY_DONE; + } + lcd_print(txt); -/* - ** - ** led_get_diskio_activity() - ** - ** calculate if there was disk-io in the system - ** - */ -static __inline__ int led_get_diskio_activity(void) -{ - static unsigned long last_pgpgin, last_pgpgout; - unsigned long events[NR_VM_EVENT_ITEMS]; - int changed; - - all_vm_events(events); - - /* Just use a very simple calculation here. Do not care about overflow, - since we only want to know if there was activity or not. */ - changed = (events[PGPGIN] != last_pgpgin) || - (events[PGPGOUT] != last_pgpgout); - last_pgpgin = events[PGPGIN]; - last_pgpgout = events[PGPGOUT]; - - return (changed ? LED_DISK_IO : 0); + return NOTIFY_OK; } +static struct notifier_block lcd_system_halt_notifier = { + .notifier_call = lcd_system_halt, +}; +static void set_led(struct led_classdev *led_cdev, enum led_brightness brightness); -/* - ** led_work_func() - ** - ** manages when and which chassis LCD/LED gets updated - - TODO: - - display load average (older machines like 715/64 have 4 "free" LED's for that) - - optimizations - */ +struct hppa_led { + struct led_classdev led_cdev; + unsigned char led_bit; +}; +#define to_hppa_led(d) container_of(d, struct hppa_led, led_cdev) -#define HEARTBEAT_LEN (HZ*10/100) -#define HEARTBEAT_2ND_RANGE_START (HZ*28/100) -#define HEARTBEAT_2ND_RANGE_END (HEARTBEAT_2ND_RANGE_START + HEARTBEAT_LEN) +typedef void (*set_handler)(struct led_classdev *, enum led_brightness); +struct led_type { + const char *name; + set_handler handler; + const char *default_trigger; +}; -#define LED_UPDATE_INTERVAL (1 + (HZ*19/1000)) +#define NUM_LEDS_PER_BOARD 8 +struct hppa_drvdata { + struct hppa_led leds[NUM_LEDS_PER_BOARD]; +}; -static void led_work_func (struct work_struct *unused) +static void set_led(struct led_classdev *led_cdev, enum led_brightness brightness) { - static unsigned long last_jiffies; - static unsigned long count_HZ; /* counter in range 0..HZ */ - unsigned char currentleds = 0; /* stores current value of the LEDs */ + struct hppa_led *p = to_hppa_led(led_cdev); + unsigned char led_bit = p->led_bit; - /* exit if not initialized */ - if (!led_func_ptr) - return; + if (brightness == LED_OFF) + lastleds &= ~led_bit; + else + lastleds |= led_bit; - /* increment the heartbeat timekeeper */ - count_HZ += jiffies - last_jiffies; - last_jiffies = jiffies; - if (count_HZ >= HZ) - count_HZ = 0; + if (led_func_ptr) + led_func_ptr(lastleds); +} - if (likely(led_heartbeat)) - { - /* flash heartbeat-LED like a real heart - * (2 x short then a long delay) - */ - if (count_HZ < HEARTBEAT_LEN || - (count_HZ >= HEARTBEAT_2ND_RANGE_START && - count_HZ < HEARTBEAT_2ND_RANGE_END)) - currentleds |= LED_HEARTBEAT; - } - if (likely(led_lanrxtx)) currentleds |= led_get_net_activity(); - if (likely(led_diskio)) currentleds |= led_get_diskio_activity(); - - /* blink LEDs if we got an Oops (HPMC) */ - if (unlikely(oops_in_progress)) { - if (boot_cpu_data.cpu_type >= pcxl2) { - /* newer machines don't have loadavg. LEDs, so we - * let all LEDs blink twice per second instead */ - currentleds = (count_HZ <= (HZ/2)) ? 0 : 0xff; - } else { - /* old machines: blink loadavg. LEDs twice per second */ - if (count_HZ <= (HZ/2)) - currentleds &= ~(LED4|LED5|LED6|LED7); - else - currentleds |= (LED4|LED5|LED6|LED7); +static int hppa_led_generic_probe(struct platform_device *pdev, + struct led_type *types) +{ + struct hppa_drvdata *p; + int i, err; + + p = devm_kzalloc(&pdev->dev, sizeof(*p), GFP_KERNEL); + if (!p) + return -ENOMEM; + + for (i = 0; i < NUM_LEDS_PER_BOARD; i++) { + struct led_classdev *lp = &p->leds[i].led_cdev; + + p->leds[i].led_bit = BIT(i); + lp->name = types[i].name; + lp->brightness = LED_FULL; + lp->brightness_set = types[i].handler; + lp->default_trigger = types[i].default_trigger; + err = led_classdev_register(&pdev->dev, lp); + if (err) { + dev_err(&pdev->dev, "Could not register %s LED\n", + lp->name); + for (i--; i >= 0; i--) + led_classdev_unregister(&p->leds[i].led_cdev); + return err; } } - if (currentleds != lastleds) - { - led_func_ptr(currentleds); /* Update the LCD/LEDs */ - lastleds = currentleds; - } + platform_set_drvdata(pdev, p); - queue_delayed_work(led_wq, &led_task, LED_UPDATE_INTERVAL); + return 0; } -/* - ** led_halt() - ** - ** called by the reboot notifier chain at shutdown and stops all - ** LED/LCD activities. - ** - */ +static void platform_led_remove(struct platform_device *pdev) +{ + struct hppa_drvdata *p = platform_get_drvdata(pdev); + int i; -static int led_halt(struct notifier_block *, unsigned long, void *); + for (i = 0; i < NUM_LEDS_PER_BOARD; i++) + led_classdev_unregister(&p->leds[i].led_cdev); +} -static struct notifier_block led_notifier = { - .notifier_call = led_halt, +static struct led_type mainboard_led_types[NUM_LEDS_PER_BOARD] = { + { + .name = "platform-lan-tx", + .handler = set_led, + .default_trigger = "tx", + }, + { + .name = "platform-lan-rx", + .handler = set_led, + .default_trigger = "rx", + }, + { + .name = "platform-disk", + .handler = set_led, + .default_trigger = "disk-activity", + }, + { + .name = "platform-heartbeat", + .handler = set_led, + .default_trigger = "heartbeat", + }, + { + .name = "platform-LED4", + .handler = set_led, + .default_trigger = "panic", + }, + { + .name = "platform-LED5", + .handler = set_led, + .default_trigger = "panic", + }, + { + .name = "platform-LED6", + .handler = set_led, + .default_trigger = "panic", + }, + { + .name = "platform-LED7", + .handler = set_led, + .default_trigger = "panic", + }, }; -static int notifier_disabled = 0; -static int led_halt(struct notifier_block *nb, unsigned long event, void *buf) +static int platform_led_probe(struct platform_device *pdev) { - char *txt; + return hppa_led_generic_probe(pdev, mainboard_led_types); +} - if (notifier_disabled) - return NOTIFY_OK; +MODULE_ALIAS("platform:platform-leds"); - notifier_disabled = 1; - switch (event) { - case SYS_RESTART: txt = "SYSTEM RESTART"; - break; - case SYS_HALT: txt = "SYSTEM HALT"; - break; - case SYS_POWER_OFF: txt = "SYSTEM POWER OFF"; - break; - default: return NOTIFY_DONE; - } - - /* Cancel the work item and delete the queue */ - if (led_wq) { - cancel_delayed_work_sync(&led_task); - destroy_workqueue(led_wq); - led_wq = NULL; - } - - if (lcd_info.model == DISPLAY_MODEL_LCD) - lcd_print(txt); - else - if (led_func_ptr) - led_func_ptr(0xff); /* turn all LEDs ON */ - - return NOTIFY_OK; -} +static struct platform_driver hppa_mainboard_led_driver = { + .probe = platform_led_probe, + .remove = platform_led_remove, + .driver = { + .name = "platform-leds", + }, +}; -/* - ** register_led_driver() - ** - ** registers an external LED or LCD for usage by this driver. - ** currently only LCD-, LASI- and ASP-style LCD/LED's are supported. - ** - */ +static struct platform_driver * const drivers[] = { + &hppa_mainboard_led_driver, +}; +static struct platform_device platform_leds = { + .name = "platform-leds", +}; + +/** + * register_led_driver() + * + * @model: model type, one of the DISPLAY_MODEL_XXXX values + * @cmd_reg: physical address of cmd register for the LED/LCD + * @data_reg: physical address of data register for the LED/LCD + * + * Registers a chassis LED or LCD which should be driven by this driver. + * Only PDC-based, LASI- or ASP-style LEDs and LCDs are supported. + */ int __init register_led_driver(int model, unsigned long cmd_reg, unsigned long data_reg) { - static int initialized; - - if (initialized || !data_reg) + if (led_func_ptr || !data_reg) + return 1; + + /* No LEDs when running in QEMU */ + if (running_on_qemu) return 1; - + lcd_info.model = model; /* store the values */ LCD_CMD_REG = (cmd_reg == LED_CMD_REG_NONE) ? 0 : cmd_reg; switch (lcd_info.model) { case DISPLAY_MODEL_LCD: LCD_DATA_REG = data_reg; - printk(KERN_INFO "LCD display at %lx,%lx registered\n", + pr_info("led: LCD display at %#lx and %#lx\n", LCD_CMD_REG , LCD_DATA_REG); led_func_ptr = led_LCD_driver; - led_type = LED_HASLCD; + if (lcd_no_led_support) + led_type = LED_HAS_LCD; + else + led_type = LED_HAS_LCD | LED_HAS_LED; break; case DISPLAY_MODEL_LASI: LED_DATA_REG = data_reg; led_func_ptr = led_LASI_driver; - printk(KERN_INFO "LED display at %lx registered\n", LED_DATA_REG); - led_type = LED_NOLCD; + pr_info("led: LED display at %#lx\n", LED_DATA_REG); + led_type = LED_HAS_LED; break; case DISPLAY_MODEL_OLD_ASP: LED_DATA_REG = data_reg; led_func_ptr = led_ASP_driver; - printk(KERN_INFO "LED (ASP-style) display at %lx registered\n", + pr_info("led: LED (ASP-style) display at %#lx\n", LED_DATA_REG); - led_type = LED_NOLCD; + led_type = LED_HAS_LED; break; default: - printk(KERN_ERR "%s: Wrong LCD/LED model %d !\n", - __func__, lcd_info.model); + pr_err("led: Unknown LCD/LED model type %d\n", lcd_info.model); return 1; } - - /* mark the LCD/LED driver now as initialized and - * register to the reboot notifier chain */ - initialized++; - register_reboot_notifier(&led_notifier); - - /* Ensure the work is queued */ - if (led_wq) { - queue_delayed_work(led_wq, &led_task, 0); - } - return 0; -} - -/* - ** register_led_regions() - ** - ** register_led_regions() registers the LCD/LED regions for /procfs. - ** At bootup - where the initialisation of the LCD/LED normally happens - - ** not all internal structures of request_region() are properly set up, - ** so that we delay the led-registration until after busdevices_init() - ** has been executed. - ** - */ + platform_register_drivers(drivers, ARRAY_SIZE(drivers)); -void __init register_led_regions(void) -{ - switch (lcd_info.model) { - case DISPLAY_MODEL_LCD: - request_mem_region((unsigned long)LCD_CMD_REG, 1, "lcd_cmd"); - request_mem_region((unsigned long)LCD_DATA_REG, 1, "lcd_data"); - break; - case DISPLAY_MODEL_LASI: - case DISPLAY_MODEL_OLD_ASP: - request_mem_region((unsigned long)LED_DATA_REG, 1, "led_data"); - break; - } + return register_reboot_notifier(&lcd_system_halt_notifier); } - -/* - ** - ** lcd_print() - ** - ** Displays the given string on the LCD-Display of newer machines. - ** lcd_print() disables/enables the timer-based led work queue to - ** avoid a race condition while writing the CMD/DATA register pair. - ** - */ -int lcd_print( const char *str ) -{ - int i; - - if (!led_func_ptr || lcd_info.model != DISPLAY_MODEL_LCD) - return 0; - - /* temporarily disable the led work task */ - if (led_wq) - cancel_delayed_work_sync(&led_task); - - /* copy display string to buffer for procfs */ - strlcpy(lcd_text, str, sizeof(lcd_text)); - - /* Set LCD Cursor to 1st character */ - gsc_writeb(lcd_info.reset_cmd1, LCD_CMD_REG); - udelay(lcd_info.min_cmd_delay); - - /* Print the string */ - for (i=0; i < lcd_info.lcd_width; i++) { - if (str && *str) - gsc_writeb(*str++, LCD_DATA_REG); - else - gsc_writeb(' ', LCD_DATA_REG); - udelay(lcd_info.min_cmd_delay); - } - - /* re-queue the work */ - if (led_wq) { - queue_delayed_work(led_wq, &led_task, 0); - } - - return lcd_info.lcd_width; -} - -/* - ** led_init() - ** - ** led_init() is called very early in the bootup-process from setup.c - ** and asks the PDC for an usable chassis LCD or LED. - ** If the PDC doesn't return any info, then the LED - ** is detected by lasi.c or asp.c and registered with the - ** above functions lasi_led_init() or asp_led_init(). - ** KittyHawk machines have often a buggy PDC, so that - ** we explicitly check for those machines here. +/** + * early_led_init() + * + * early_led_init() is called early in the bootup-process and asks the + * PDC for an usable chassis LCD or LED. If the PDC doesn't return any + * info, then a LED might be detected by the LASI or ASP drivers later. + * KittyHawk machines have often a buggy PDC, so that we explicitly check + * for those machines here. */ - -int __init led_init(void) +static int __init early_led_init(void) { struct pdc_chassis_info chassis_info; int ret; - snprintf(lcd_text_default, sizeof(lcd_text_default), + scnprintf(lcd_text, sizeof(lcd_text), "Linux %s", init_utsname()->release); + lcd_new_text = 1; /* Work around the buggy PDC of KittyHawk-machines */ switch (CPU_HVERSION) { @@ -698,82 +466,86 @@ int __init led_init(void) case 0x582: /* KittyHawk DC3 100 (K400) */ case 0x583: /* KittyHawk DC3 120 (K410) */ case 0x58B: /* KittyHawk DC2 100 (K200) */ - printk(KERN_INFO "%s: KittyHawk-Machine (hversion 0x%x) found, " - "LED detection skipped.\n", __FILE__, CPU_HVERSION); + pr_info("LCD on KittyHawk-Machine found.\n"); + lcd_info.model = DISPLAY_MODEL_LCD; + /* KittyHawk has no LED support on its LCD, so skip LED detection */ lcd_no_led_support = 1; goto found; /* use the preinitialized values of lcd_info */ } /* initialize the struct, so that we can check for valid return values */ - lcd_info.model = DISPLAY_MODEL_NONE; chassis_info.actcnt = chassis_info.maxcnt = 0; ret = pdc_chassis_info(&chassis_info, &lcd_info, sizeof(lcd_info)); - if (ret == PDC_OK) { - DPRINTK((KERN_INFO "%s: chassis info: model=%d (%s), " - "lcd_width=%d, cmd_delay=%u,\n" - "%s: sizecnt=%d, actcnt=%ld, maxcnt=%ld\n", - __FILE__, lcd_info.model, - (lcd_info.model==DISPLAY_MODEL_LCD) ? "LCD" : - (lcd_info.model==DISPLAY_MODEL_LASI) ? "LED" : "unknown", - lcd_info.lcd_width, lcd_info.min_cmd_delay, - __FILE__, sizeof(lcd_info), - chassis_info.actcnt, chassis_info.maxcnt)); - DPRINTK((KERN_INFO "%s: cmd=%p, data=%p, reset1=%x, reset2=%x, act_enable=%d\n", - __FILE__, lcd_info.lcd_cmd_reg_addr, - lcd_info.lcd_data_reg_addr, lcd_info.reset_cmd1, - lcd_info.reset_cmd2, lcd_info.act_enable )); - - /* check the results. Some machines have a buggy PDC */ - if (chassis_info.actcnt <= 0 || chassis_info.actcnt != chassis_info.maxcnt) - goto not_found; + if (ret != PDC_OK) { +not_found: + lcd_info.model = DISPLAY_MODEL_NONE; + return 1; + } + + /* check the results. Some machines have a buggy PDC */ + if (chassis_info.actcnt <= 0 || chassis_info.actcnt != chassis_info.maxcnt) + goto not_found; - switch (lcd_info.model) { - case DISPLAY_MODEL_LCD: /* LCD display */ - if (chassis_info.actcnt < - offsetof(struct pdc_chassis_lcd_info_ret_block, _pad)-1) - goto not_found; - if (!lcd_info.act_enable) { - DPRINTK((KERN_INFO "PDC prohibited usage of the LCD.\n")); - goto not_found; - } - break; - - case DISPLAY_MODEL_NONE: /* no LED or LCD available */ - printk(KERN_INFO "PDC reported no LCD or LED.\n"); + switch (lcd_info.model) { + case DISPLAY_MODEL_LCD: /* LCD display */ + if (chassis_info.actcnt < + offsetof(struct pdc_chassis_lcd_info_ret_block, _pad)-1) + goto not_found; + if (!lcd_info.act_enable) { + /* PDC tells LCD should not be used. */ goto not_found; + } + break; - case DISPLAY_MODEL_LASI: /* Lasi style 8 bit LED display */ - if (chassis_info.actcnt != 8 && chassis_info.actcnt != 32) - goto not_found; - break; + case DISPLAY_MODEL_NONE: /* no LED or LCD available */ + goto not_found; - default: - printk(KERN_WARNING "PDC reported unknown LCD/LED model %d\n", - lcd_info.model); + case DISPLAY_MODEL_LASI: /* Lasi style 8 bit LED display */ + if (chassis_info.actcnt != 8 && chassis_info.actcnt != 32) goto not_found; - } /* switch() */ - -found: - /* register the LCD/LED driver */ - register_led_driver(lcd_info.model, LCD_CMD_REG, LCD_DATA_REG); - return 0; + break; - } else { /* if() */ - DPRINTK((KERN_INFO "pdc_chassis_info call failed with retval = %d\n", ret)); + default: + pr_warn("PDC reported unknown LCD/LED model %d\n", + lcd_info.model); + goto not_found; } -not_found: - lcd_info.model = DISPLAY_MODEL_NONE; - return 1; +found: + /* register the LCD/LED driver */ + return register_led_driver(lcd_info.model, LCD_CMD_REG, LCD_DATA_REG); } +arch_initcall(early_led_init); -static void __exit led_exit(void) +/** + * register_led_regions() + * + * Register_led_regions() registers the LCD/LED regions for /procfs. + * At bootup - where the initialisation of the LCD/LED often happens + * not all internal structures of request_region() are properly set up, + * so that we delay the led-registration until after busdevices_init() + * has been executed. + */ +static void __init register_led_regions(void) { - unregister_reboot_notifier(&led_notifier); - return; + switch (lcd_info.model) { + case DISPLAY_MODEL_LCD: + request_mem_region((unsigned long)LCD_CMD_REG, 1, "lcd_cmd"); + request_mem_region((unsigned long)LCD_DATA_REG, 1, "lcd_data"); + break; + case DISPLAY_MODEL_LASI: + case DISPLAY_MODEL_OLD_ASP: + request_mem_region((unsigned long)LED_DATA_REG, 1, "led_data"); + break; + } } -#ifdef CONFIG_PROC_FS -module_init(led_create_procfs) -#endif +static int __init startup_leds(void) +{ + if (platform_device_register(&platform_leds)) + printk(KERN_INFO "LED: failed to register LEDs\n"); + register_led_regions(); + return 0; +} +device_initcall(startup_leds); diff --git a/drivers/parisc/pdc_stable.c b/drivers/parisc/pdc_stable.c index 0f54ab6260df..16f4496bca95 100644 --- a/drivers/parisc/pdc_stable.c +++ b/drivers/parisc/pdc_stable.c @@ -1,22 +1,9 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * Interfaces to retrieve and set PDC Stable options (firmware) * * Copyright (C) 2005-2006 Thibaut VARENE <varenet@parisc-linux.org> * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License, version 2, as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - * - * * DEV NOTE: the PDC Procedures reference states that: * "A minimum of 96 bytes of Stable Storage is required. Providing more than * 96 bytes of Stable Storage is optional [...]. Failure to provide the @@ -27,7 +14,7 @@ * all) PA-RISC machines should have them. Anyway, for safety reasons, the * following code can deal with just 96 bytes of Stable Storage, and all * sizes between 96 and 192 bytes (provided they are multiple of struct - * device_path size, eg: 128, 160 and 192) to provide full information. + * pdc_module_path size, eg: 128, 160 and 192) to provide full information. * One last word: there's one path we can always count on: the primary path. * Anything above 224 bytes is used for 'osdep2' OS-dependent storage area. * @@ -68,7 +55,7 @@ #include <asm/pdc.h> #include <asm/page.h> -#include <asm/uaccess.h> +#include <linux/uaccess.h> #include <asm/hardware.h> #define PDCS_VERSION "0.30" @@ -101,7 +88,7 @@ struct pdcspath_entry { short ready; /* entry record is valid if != 0 */ unsigned long addr; /* entry address in stable storage */ char *name; /* entry name */ - struct device_path devpath; /* device path in parisc representation */ + struct pdc_module_path devpath; /* device path in parisc representation */ struct device *dev; /* corresponding device */ struct kobject kobj; }; @@ -151,7 +138,7 @@ struct pdcspath_attribute paths_attr_##_name = { \ static int pdcspath_fetch(struct pdcspath_entry *entry) { - struct device_path *devpath; + struct pdc_module_path *devpath; if (!entry) return -EINVAL; @@ -166,7 +153,7 @@ pdcspath_fetch(struct pdcspath_entry *entry) return -EIO; /* Find the matching device. - NOTE: hardware_path overlays with device_path, so the nice cast can + NOTE: hardware_path overlays with pdc_module_path, so the nice cast can be used */ entry->dev = hwpath_to_device((struct hardware_path *)devpath); @@ -192,7 +179,7 @@ pdcspath_fetch(struct pdcspath_entry *entry) static void pdcspath_store(struct pdcspath_entry *entry) { - struct device_path *devpath; + struct pdc_module_path *devpath; BUG_ON(!entry); @@ -234,7 +221,7 @@ static ssize_t pdcspath_hwpath_read(struct pdcspath_entry *entry, char *buf) { char *out = buf; - struct device_path *devpath; + struct pdc_module_path *devpath; short i; if (!entry || !buf) @@ -249,11 +236,11 @@ pdcspath_hwpath_read(struct pdcspath_entry *entry, char *buf) return -ENODATA; for (i = 0; i < 6; i++) { - if (devpath->bc[i] >= 128) + if (devpath->path.bc[i] < 0) continue; - out += sprintf(out, "%u/", (unsigned char)devpath->bc[i]); + out += sprintf(out, "%d/", devpath->path.bc[i]); } - out += sprintf(out, "%u\n", (unsigned char)devpath->mod); + out += sprintf(out, "%u\n", (unsigned char)devpath->path.mod); return out - buf; } @@ -278,7 +265,7 @@ pdcspath_hwpath_write(struct pdcspath_entry *entry, const char *buf, size_t coun { struct hardware_path hwpath; unsigned short i; - char in[count+1], *temp; + char in[64], *temp; struct device *dev; int ret; @@ -286,8 +273,8 @@ pdcspath_hwpath_write(struct pdcspath_entry *entry, const char *buf, size_t coun return -EINVAL; /* We'll use a local copy of buf */ - memset(in, 0, count+1); - strncpy(in, buf, count); + count = min_t(size_t, count, sizeof(in)-1); + strscpy(in, buf, count + 1); /* Let's clean up the target. 0xff is a blank pattern */ memset(&hwpath, 0xff, sizeof(hwpath)); @@ -308,12 +295,12 @@ pdcspath_hwpath_write(struct pdcspath_entry *entry, const char *buf, size_t coun for (i=5; ((temp = strrchr(in, '/'))) && (temp-in > 0) && (likely(i)); i--) { hwpath.bc[i] = simple_strtoul(temp+1, NULL, 10); in[temp-in] = '\0'; - DPRINTK("%s: bc[%d]: %d\n", __func__, i, hwpath.bc[i]); + DPRINTK("%s: bc[%d]: %d\n", __func__, i, hwpath.path.bc[i]); } /* Store the final field */ hwpath.bc[i] = simple_strtoul(in, NULL, 10); - DPRINTK("%s: bc[%d]: %d\n", __func__, i, hwpath.bc[i]); + DPRINTK("%s: bc[%d]: %d\n", __func__, i, hwpath.path.bc[i]); /* Now we check that the user isn't trying to lure us */ if (!(dev = hwpath_to_device((struct hardware_path *)&hwpath))) { @@ -332,11 +319,11 @@ pdcspath_hwpath_write(struct pdcspath_entry *entry, const char *buf, size_t coun /* Update the symlink to the real device */ sysfs_remove_link(&entry->kobj, "device"); + write_unlock(&entry->rw_lock); + ret = sysfs_create_link(&entry->kobj, &entry->dev->kobj, "device"); WARN_ON(ret); - write_unlock(&entry->rw_lock); - printk(KERN_INFO PDCS_PREFIX ": changed \"%s\" path to \"%s\"\n", entry->name, buf); @@ -354,7 +341,7 @@ static ssize_t pdcspath_layer_read(struct pdcspath_entry *entry, char *buf) { char *out = buf; - struct device_path *devpath; + struct pdc_module_path *devpath; short i; if (!entry || !buf) @@ -393,14 +380,14 @@ pdcspath_layer_write(struct pdcspath_entry *entry, const char *buf, size_t count { unsigned int layers[6]; /* device-specific info (ctlr#, unit#, ...) */ unsigned short i; - char in[count+1], *temp; + char in[64], *temp; if (!entry || !buf || !count) return -EINVAL; /* We'll use a local copy of buf */ - memset(in, 0, count+1); - strncpy(in, buf, count); + count = min_t(size_t, count, sizeof(in)-1); + strscpy(in, buf, count + 1); /* Let's clean up the target. 0 is a blank pattern */ memset(&layers, 0, sizeof(layers)); @@ -493,11 +480,12 @@ static struct attribute *paths_subsys_attrs[] = { &paths_attr_layer.attr, NULL, }; +ATTRIBUTE_GROUPS(paths_subsys); /* Specific kobject type for our PDC paths */ -static struct kobj_type ktype_pdcspath = { +static const struct kobj_type ktype_pdcspath = { .sysfs_ops = &pdcspath_attr_ops, - .default_attrs = paths_subsys_attrs, + .default_groups = paths_subsys_groups, }; /* We hard define the 4 types of path we expect to find */ @@ -521,6 +509,8 @@ static struct pdcspath_entry *pdcspath_entries[] = { /** * pdcs_size_read - Stable Storage size output. + * @kobj: The kobject used to share data with userspace. + * @attr: The kobject attributes. * @buf: The output buffer to write to. */ static ssize_t pdcs_size_read(struct kobject *kobj, @@ -540,6 +530,8 @@ static ssize_t pdcs_size_read(struct kobject *kobj, /** * pdcs_auto_read - Stable Storage autoboot/search flag output. + * @kobj: The kobject used to share data with userspace. + * @attr: The kobject attributes. * @buf: The output buffer to write to. * @knob: The PF_AUTOBOOT or PF_AUTOSEARCH flag */ @@ -557,7 +549,7 @@ static ssize_t pdcs_auto_read(struct kobject *kobj, pathentry = &pdcspath_entry_primary; read_lock(&pathentry->rw_lock); - out += sprintf(out, "%s\n", (pathentry->devpath.flags & knob) ? + out += sprintf(out, "%s\n", (pathentry->devpath.path.flags & knob) ? "On" : "Off"); read_unlock(&pathentry->rw_lock); @@ -566,6 +558,8 @@ static ssize_t pdcs_auto_read(struct kobject *kobj, /** * pdcs_autoboot_read - Stable Storage autoboot flag output. + * @kobj: The kobject used to share data with userspace. + * @attr: The kobject attributes. * @buf: The output buffer to write to. */ static ssize_t pdcs_autoboot_read(struct kobject *kobj, @@ -576,6 +570,8 @@ static ssize_t pdcs_autoboot_read(struct kobject *kobj, /** * pdcs_autosearch_read - Stable Storage autoboot flag output. + * @kobj: The kobject used to share data with userspace. + * @attr: The kobject attributes. * @buf: The output buffer to write to. */ static ssize_t pdcs_autosearch_read(struct kobject *kobj, @@ -586,6 +582,8 @@ static ssize_t pdcs_autosearch_read(struct kobject *kobj, /** * pdcs_timer_read - Stable Storage timer count output (in seconds). + * @kobj: The kobject used to share data with userspace. + * @attr: The kobject attributes. * @buf: The output buffer to write to. * * The value of the timer field correponds to a number of seconds in powers of 2. @@ -604,8 +602,8 @@ static ssize_t pdcs_timer_read(struct kobject *kobj, /* print the timer value in seconds */ read_lock(&pathentry->rw_lock); - out += sprintf(out, "%u\n", (pathentry->devpath.flags & PF_TIMER) ? - (1 << (pathentry->devpath.flags & PF_TIMER)) : 0); + out += sprintf(out, "%u\n", (pathentry->devpath.path.flags & PF_TIMER) ? + (1 << (pathentry->devpath.path.flags & PF_TIMER)) : 0); read_unlock(&pathentry->rw_lock); return out - buf; @@ -613,6 +611,8 @@ static ssize_t pdcs_timer_read(struct kobject *kobj, /** * pdcs_osid_read - Stable Storage OS ID register output. + * @kobj: The kobject used to share data with userspace. + * @attr: The kobject attributes. * @buf: The output buffer to write to. */ static ssize_t pdcs_osid_read(struct kobject *kobj, @@ -631,6 +631,8 @@ static ssize_t pdcs_osid_read(struct kobject *kobj, /** * pdcs_osdep1_read - Stable Storage OS-Dependent data area 1 output. + * @kobj: The kobject used to share data with userspace. + * @attr: The kobject attributes. * @buf: The output buffer to write to. * * This can hold 16 bytes of OS-Dependent data. @@ -657,6 +659,8 @@ static ssize_t pdcs_osdep1_read(struct kobject *kobj, /** * pdcs_diagnostic_read - Stable Storage Diagnostic register output. + * @kobj: The kobject used to share data with userspace. + * @attr: The kobject attributes. * @buf: The output buffer to write to. * * I have NFC how to interpret the content of that register ;-). @@ -681,6 +685,8 @@ static ssize_t pdcs_diagnostic_read(struct kobject *kobj, /** * pdcs_fastsize_read - Stable Storage FastSize register output. + * @kobj: The kobject used to share data with userspace. + * @attr: The kobject attributes. * @buf: The output buffer to write to. * * This register holds the amount of system RAM to be tested during boot sequence. @@ -709,6 +715,8 @@ static ssize_t pdcs_fastsize_read(struct kobject *kobj, /** * pdcs_osdep2_read - Stable Storage OS-Dependent data area 2 output. + * @kobj: The kobject used to share data with userspace. + * @attr: The kobject attributes. * @buf: The output buffer to write to. * * This can hold pdcs_size - 224 bytes of OS-Dependent data, when available. @@ -741,6 +749,8 @@ static ssize_t pdcs_osdep2_read(struct kobject *kobj, /** * pdcs_auto_write - This function handles autoboot/search flag modifying. + * @kobj: The kobject used to share data with userspace. + * @attr: The kobject attributes. * @buf: The input buffer to read from. * @count: The number of bytes to be read. * @knob: The PF_AUTOBOOT or PF_AUTOSEARCH flag @@ -755,7 +765,7 @@ static ssize_t pdcs_auto_write(struct kobject *kobj, { struct pdcspath_entry *pathentry; unsigned char flags; - char in[count+1], *temp; + char in[8], *temp; char c; if (!capable(CAP_SYS_ADMIN)) @@ -765,15 +775,15 @@ static ssize_t pdcs_auto_write(struct kobject *kobj, return -EINVAL; /* We'll use a local copy of buf */ - memset(in, 0, count+1); - strncpy(in, buf, count); + count = min_t(size_t, count, sizeof(in)-1); + strscpy(in, buf, count + 1); /* Current flags are stored in primary boot path entry */ pathentry = &pdcspath_entry_primary; /* Be nice to the existing flag record */ read_lock(&pathentry->rw_lock); - flags = pathentry->devpath.flags; + flags = pathentry->devpath.path.flags; read_unlock(&pathentry->rw_lock); DPRINTK("%s: flags before: 0x%X\n", __func__, flags); @@ -794,7 +804,7 @@ static ssize_t pdcs_auto_write(struct kobject *kobj, write_lock(&pathentry->rw_lock); /* Change the path entry flags first */ - pathentry->devpath.flags = flags; + pathentry->devpath.path.flags = flags; /* Now, dive in. Write back to the hardware */ pdcspath_store(pathentry); @@ -813,6 +823,8 @@ parse_error: /** * pdcs_autoboot_write - This function handles autoboot flag modifying. + * @kobj: The kobject used to share data with userspace. + * @attr: The kobject attributes. * @buf: The input buffer to read from. * @count: The number of bytes to be read. * @@ -829,6 +841,8 @@ static ssize_t pdcs_autoboot_write(struct kobject *kobj, /** * pdcs_autosearch_write - This function handles autosearch flag modifying. + * @kobj: The kobject used to share data with userspace. + * @attr: The kobject attributes. * @buf: The input buffer to read from. * @count: The number of bytes to be read. * @@ -845,6 +859,8 @@ static ssize_t pdcs_autosearch_write(struct kobject *kobj, /** * pdcs_osdep1_write - Stable Storage OS-Dependent data area 1 input. + * @kobj: The kobject used to share data with userspace. + * @attr: The kobject attributes. * @buf: The input buffer to read from. * @count: The number of bytes to be read. * @@ -882,6 +898,8 @@ static ssize_t pdcs_osdep1_write(struct kobject *kobj, /** * pdcs_osdep2_write - Stable Storage OS-Dependent data area 2 input. + * @kobj: The kobject used to share data with userspace. + * @attr: The kobject attributes. * @buf: The input buffer to read from. * @count: The number of bytes to be read. * @@ -951,7 +969,7 @@ static struct attribute *pdcs_subsys_attrs[] = { NULL, }; -static struct attribute_group pdcs_attr_group = { +static const struct attribute_group pdcs_attr_group = { .attrs = pdcs_subsys_attrs, }; @@ -989,12 +1007,15 @@ pdcs_register_pathentries(void) entry->kobj.kset = paths_kset; err = kobject_init_and_add(&entry->kobj, &ktype_pdcspath, NULL, "%s", entry->name); - if (err) + if (err) { + kobject_put(&entry->kobj); return err; + } /* kobject is now registered */ write_lock(&entry->rw_lock); entry->ready = 2; + write_unlock(&entry->rw_lock); /* Add a nice symlink to the real device */ if (entry->dev) { @@ -1002,7 +1023,6 @@ pdcs_register_pathentries(void) WARN_ON(err); } - write_unlock(&entry->rw_lock); kobject_uevent(&entry->kobj, KOBJ_ADD); } @@ -1033,7 +1053,7 @@ pdcs_unregister_pathentries(void) static int __init pdc_stable_init(void) { - int rc = 0, error = 0; + int rc = 0, error; u32 result; /* find the size of the stable storage */ @@ -1062,6 +1082,10 @@ pdc_stable_init(void) /* Don't forget the root entries */ error = sysfs_create_group(stable_kobj, &pdcs_attr_group); + if (error) { + rc = -ENOMEM; + goto fail_ksetreg; + } /* register the paths kset as a child of the stable kset */ paths_kset = kset_create_and_add("paths", NULL, stable_kobj); diff --git a/drivers/parisc/power.c b/drivers/parisc/power.c index 90cca5e3805f..9d6c7bf72e29 100644 --- a/drivers/parisc/power.c +++ b/drivers/parisc/power.c @@ -1,45 +1,20 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ /* - * linux/drivers/parisc/power.c - * HP PARISC soft power switch support driver - * - * Copyright (c) 2001-2007 Helge Deller <deller@gmx.de> - * All rights reserved. - * - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions, and the following disclaimer, - * without modification. - * 2. The name of the author may not be used to endorse or promote products - * derived from this software without specific prior written permission. - * - * Alternatively, this software may be distributed under the terms of the - * GNU General Public License ("GPL"). - * - * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR - * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * HP PARISC soft power switch driver * + * Copyright (c) 2001-2023 Helge Deller <deller@gmx.de> * * HINT: * Support of the soft power switch button may be enabled or disabled at * runtime through the "/proc/sys/kernel/power" procfs entry. - */ + */ #include <linux/module.h> #include <linux/init.h> #include <linux/kernel.h> -#include <linux/notifier.h> +#include <linux/panic_notifier.h> #include <linux/reboot.h> -#include <linux/sched.h> +#include <linux/sched/signal.h> #include <linux/kthread.h> #include <linux/pm.h> @@ -62,12 +37,12 @@ #define MFCPU_X(rDiagReg, t_ch, t_th, code) \ (DIAG_CODE(code) + ((rDiagReg)<<21) + ((t_ch)<<16) + ((t_th)<<0) ) - + #define MTCPU(dr, gr) MFCPU_X(dr, gr, 0, 0x12) /* move value of gr to dr[dr] */ #define MFCPU_C(dr, gr) MFCPU_X(dr, gr, 0, 0x30) /* for dr0 and dr8 only ! */ #define MFCPU_T(dr, gr) MFCPU_X(dr, 0, gr, 0xa0) /* all dr except dr0 and dr8 */ - -#define __getDIAG(dr) ( { \ + +#define __getDIAG(dr) ( { \ register unsigned long __res asm("r28");\ __asm__ __volatile__ ( \ ".word %1" : "=&r" (__res) : "i" (MFCPU_T(dr,28) ) \ @@ -85,7 +60,7 @@ static void process_shutdown(void) printk(KERN_ALERT KTHREAD_NAME ": Shutdown requested...\n"); shutdown_timer++; - + /* wait until the button was pressed for 1 second */ if (shutdown_timer == (POWERSWITCH_DOWN_SEC*POWERSWITCH_POLL_PER_SEC)) { static const char msg[] = "Shutting down..."; @@ -95,8 +70,7 @@ static void process_shutdown(void) /* send kill signal */ if (kill_cad_pid(SIGINT, 1)) { /* just in case killing init process failed */ - if (pm_power_off) - pm_power_off(); + machine_power_off(); } } } @@ -109,7 +83,25 @@ static struct task_struct *power_task; #define SYSCTL_FILENAME "sys/kernel/power" /* soft power switch enabled/disabled */ -int pwrsw_enabled __read_mostly = 1; +static int pwrsw_enabled __read_mostly = 1; + +static const struct ctl_table power_sysctl_table[] = { + { + .procname = "soft-power", + .data = &pwrsw_enabled, + .maxlen = sizeof(int), + .mode = 0644, + .proc_handler = proc_dointvec, + }, +}; + +static int __init init_power_sysctl(void) +{ + register_sysctl_init("kernel", power_sysctl_table); + return 0; +} + +arch_initcall(init_power_sysctl); /* main kernel thread worker. It polls the button state */ static int kpowerswd(void *param) @@ -121,7 +113,6 @@ static int kpowerswd(void *param) unsigned long soft_power_reg = (unsigned long) param; schedule_timeout_interruptible(pwrsw_enabled ? HZ : HZ/POWERSWITCH_POLL_PER_SEC); - __set_current_state(TASK_RUNNING); if (unlikely(!pwrsw_enabled)) continue; @@ -137,7 +128,7 @@ static int kpowerswd(void *param) button_not_pressed = (gsc_readl(soft_power_reg) & 0x1); } else { /* - * On gecko style machines (e.g. 712/xx and 715/xx) + * On gecko style machines (e.g. 712/xx and 715/xx) * the power switch status is stored in Bit 0 ("the highest bit") * of CPU diagnose register 25. * Warning: Some machines never reset the DIAG flag, even if @@ -163,7 +154,7 @@ static int kpowerswd(void *param) /* - * powerfail interruption handler (irq IRQ_FROM_REGION(CPU_IRQ_REGION)+2) + * powerfail interruption handler (irq IRQ_FROM_REGION(CPU_IRQ_REGION)+2) */ #if 0 static void powerfail_interrupt(int code, void *x) @@ -176,16 +167,21 @@ static void powerfail_interrupt(int code, void *x) -/* parisc_panic_event() is called by the panic handler. - * As soon as a panic occurs, our tasklets above will not be - * executed any longer. This function then re-enables the - * soft-power switch and allows the user to switch off the system +/* + * parisc_panic_event() is called by the panic handler. + * + * As soon as a panic occurs, our tasklets above will not + * be executed any longer. This function then re-enables + * the soft-power switch and allows the user to switch off + * the system. We rely in pdc_soft_power_button_panic() + * since this version spin_trylocks (instead of regular + * spinlock), preventing deadlocks on panic path. */ static int parisc_panic_event(struct notifier_block *this, unsigned long event, void *ptr) { /* re-enable the soft-power switch */ - pdc_soft_power_button(0); + pdc_soft_power_button_panic(0); return NOTIFY_DONE; } @@ -194,6 +190,14 @@ static struct notifier_block parisc_panic_block = { .priority = INT_MAX, }; +/* qemu soft power-off function */ +static int qemu_power_off(struct sys_off_data *data) +{ + /* this turns the system off via SeaBIOS */ + gsc_writel(0, (unsigned long) data->cb_data); + pdc_soft_power_button(1); + return NOTIFY_DONE; +} static int __init power_init(void) { @@ -211,19 +215,25 @@ static int __init power_init(void) ret = pdc_soft_power_button(1); if (ret != PDC_OK) soft_power_reg = -1UL; - + switch (soft_power_reg) { case 0: printk(KERN_INFO DRIVER_NAME ": Gecko-style soft power switch enabled.\n"); break; - + case -1UL: printk(KERN_INFO DRIVER_NAME ": Soft power switch support not available.\n"); return -ENODEV; - + default: printk(KERN_INFO DRIVER_NAME ": Soft power switch at 0x%08lx enabled.\n", soft_power_reg); } - power_task = kthread_run(kpowerswd, (void*)soft_power_reg, KTHREAD_NAME); + power_task = NULL; + if (running_on_qemu && soft_power_reg) + register_sys_off_handler(SYS_OFF_MODE_POWER_OFF, SYS_OFF_PRIO_DEFAULT, + qemu_power_off, (void *)soft_power_reg); + if (!running_on_qemu || soft_power_reg) + power_task = kthread_run(kpowerswd, (void*)soft_power_reg, + KTHREAD_NAME); if (IS_ERR(power_task)) { printk(KERN_ERR DRIVER_NAME ": thread creation failed. Driver not loaded.\n"); pdc_soft_power_button(0); diff --git a/drivers/parisc/sba_iommu.c b/drivers/parisc/sba_iommu.c index 1ff1b67e8b27..a6eb6bffa5ea 100644 --- a/drivers/parisc/sba_iommu.c +++ b/drivers/parisc/sba_iommu.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* ** System Bus Adapter (SBA) I/O MMU manager ** @@ -7,10 +8,6 @@ ** ** Portions (c) 1999 Dave S. Miller (from sparc64 I/O MMU code) ** -** 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 initializes the IOC (I/O Controller) found on B1000/C3000/ @@ -28,8 +25,15 @@ #include <linux/mm.h> #include <linux/string.h> #include <linux/pci.h> +#include <linux/dma-map-ops.h> #include <linux/scatterlist.h> #include <linux/iommu-helper.h> +/* + * The semantics of 64 register access on 32bit systems can't be guaranteed + * by the C standard, we hope the _lo_hi() macros defining readq and writeq + * here will behave as expected. + */ +#include <linux/io-64-nonatomic-lo-hi.h> #include <asm/byteorder.h> #include <asm/io.h> @@ -42,13 +46,13 @@ #include <linux/module.h> #include <asm/ropes.h> -#include <asm/mckinley.h> /* for proc_mckinley_root */ -#include <asm/runway.h> /* for proc_runway_root */ #include <asm/page.h> /* for PAGE0 */ #include <asm/pdc.h> /* for PDC_MODEL_* */ #include <asm/pdcpat.h> /* for is_pdc_pat() */ #include <asm/parisc-device.h> +#include "iommu.h" + #define MODULE_NAME "SBA" /* @@ -89,8 +93,6 @@ #define DBG_RES(x...) #endif -#define SBA_INLINE __inline__ - #define DEFAULT_DMA_HINT_REG 0 struct sba_device *sba_list; @@ -117,6 +119,8 @@ module_param(sba_reserve_agpgart, int, 0444); MODULE_PARM_DESC(sba_reserve_agpgart, "Reserve half of IO pdir as AGPGART"); #endif +static struct proc_dir_entry *proc_runway_root __ro_after_init; +static struct proc_dir_entry *proc_mckinley_root __ro_after_init; /************************************ ** SBA register read and write support @@ -198,7 +202,7 @@ static void sba_dump_pdir_entry(struct ioc *ioc, char *msg, uint pide) { /* start printing from lowest pde in rval */ - u64 *ptr = &(ioc->pdir_base[pide & (~0U * BITS_PER_LONG)]); + __le64 *ptr = &(ioc->pdir_base[pide & (~0U * BITS_PER_LONG)]); unsigned long *rptr = (unsigned long *) &(ioc->res_map[(pide >>3) & ~(sizeof(unsigned long) - 1)]); uint rcnt; @@ -278,7 +282,7 @@ sba_dump_sg( struct ioc *ioc, struct scatterlist *startsg, int nents) nents, (unsigned long) sg_dma_address(startsg), sg_dma_len(startsg), - sg_virt_addr(startsg), startsg->length); + sg_virt(startsg), startsg->length); startsg++; } } @@ -326,13 +330,14 @@ static unsigned long ptr_to_pide(struct ioc *ioc, unsigned long *res_ptr, /** * sba_search_bitmap - find free space in IO PDIR resource bitmap * @ioc: IO MMU structure which owns the pdir we are interested in. + * @dev: device to query the bitmap for * @bits_wanted: number of entries we need. * * Find consecutive free bits in resource bitmap. * Each bit represents one entry in the IO Pdir. * Cool perf optimization: search for log2(size) bits at a time. */ -static SBA_INLINE unsigned long +static unsigned long sba_search_bitmap(struct ioc *ioc, struct device *dev, unsigned long bits_wanted) { @@ -343,8 +348,7 @@ sba_search_bitmap(struct ioc *ioc, struct device *dev, unsigned long shift; int ret; - boundary_size = ALIGN((unsigned long long)dma_get_seg_boundary(dev) + 1, - 1ULL << IOVP_SHIFT) >> IOVP_SHIFT; + boundary_size = dma_get_seg_boundary_nr_pages(dev, IOVP_SHIFT); #if defined(ZX1_SUPPORT) BUG_ON(ioc->ibase & ~IOVP_MASK); @@ -426,6 +430,7 @@ sba_search_bitmap(struct ioc *ioc, struct device *dev, /** * sba_alloc_range - find free bits and mark them in IO PDIR resource bitmap * @ioc: IO MMU structure which owns the pdir we are interested in. + * @dev: device for which pages should be alloced * @size: number of bytes to create a mapping for * * Given a size, find consecutive unmarked and then mark those bits in the @@ -485,7 +490,7 @@ sba_alloc_range(struct ioc *ioc, struct device *dev, size_t size) * * clear bits in the ioc's resource map */ -static SBA_INLINE void +static void sba_free_range(struct ioc *ioc, dma_addr_t iova, size_t size) { unsigned long iovp = SBA_IOVP(ioc, iova); @@ -527,7 +532,7 @@ typedef unsigned long space_t; * sba_io_pdir_entry - fill in one IO PDIR entry * @pdir_ptr: pointer to IO PDIR entry * @sid: process Space ID - currently only support KERNEL_SPACE - * @vba: Virtual CPU address of buffer to map + * @pba: Physical address of buffer to map * @hint: DMA hint set to use for this mapping * * SBA Mapping Routine @@ -563,30 +568,25 @@ typedef unsigned long space_t; * IOMMU uses little endian for the pdir. */ -static void SBA_INLINE -sba_io_pdir_entry(u64 *pdir_ptr, space_t sid, unsigned long vba, +static void +sba_io_pdir_entry(__le64 *pdir_ptr, space_t sid, phys_addr_t pba, unsigned long hint) { - u64 pa; /* physical address */ register unsigned ci; /* coherent index */ - pa = virt_to_phys(vba); - pa &= IOVP_MASK; + asm("lci 0(%1), %0" : "=r" (ci) : "r" (phys_to_virt(pba))); + pba &= IOVP_MASK; + pba |= (ci >> PAGE_SHIFT) & 0xff; /* move CI (8 bits) into lowest byte */ - mtsp(sid,1); - asm("lci 0(%%sr1, %1), %0" : "=r" (ci) : "r" (vba)); - pa |= (ci >> PAGE_SHIFT) & 0xff; /* move CI (8 bits) into lowest byte */ - - pa |= SBA_PDIR_VALID_BIT; /* set "valid" bit */ - *pdir_ptr = cpu_to_le64(pa); /* swap and store into I/O Pdir */ + pba |= SBA_PDIR_VALID_BIT; /* set "valid" bit */ + *pdir_ptr = cpu_to_le64(pba); /* swap and store into I/O Pdir */ /* * If the PDC_MODEL capabilities has Non-coherent IO-PDIR bit set * (bit #61, big endian), we have to flush and sync every time * IO-PDIR is changed in Ike/Astro. */ - if (ioc_needs_fdc) - asm volatile("fdc %%r0(%0)" : : "r" (pdir_ptr)); + asm_io_fdc(pdir_ptr); } @@ -606,11 +606,11 @@ sba_io_pdir_entry(u64 *pdir_ptr, space_t sid, unsigned long vba, * must be a power of 2. The "Cool perf optimization" in the * allocation routine helps keep that true. */ -static SBA_INLINE void +static void sba_mark_invalid(struct ioc *ioc, dma_addr_t iova, size_t byte_cnt) { u32 iovp = (u32) SBA_IOVP(ioc,iova); - u64 *pdir_ptr = &ioc->pdir_base[PDIR_INDEX(iovp)]; + __le64 *pdir_ptr = &ioc->pdir_base[PDIR_INDEX(iovp)]; #ifdef ASSERT_PDIR_SANITY /* Assert first pdir entry is set. @@ -639,8 +639,8 @@ sba_mark_invalid(struct ioc *ioc, dma_addr_t iova, size_t byte_cnt) do { /* clear I/O Pdir entry "valid" bit first */ ((u8 *) pdir_ptr)[7] = 0; + asm_io_fdc(pdir_ptr); if (ioc_needs_fdc) { - asm volatile("fdc %%r0(%0)" : : "r" (pdir_ptr)); #if 0 entries_per_cacheline = L1_CACHE_SHIFT - 3; #endif @@ -659,8 +659,7 @@ sba_mark_invalid(struct ioc *ioc, dma_addr_t iova, size_t byte_cnt) ** could dump core on HPMC. */ ((u8 *) pdir_ptr)[7] = 0; - if (ioc_needs_fdc) - asm volatile("fdc %%r0(%0)" : : "r" (pdir_ptr)); + asm_io_fdc(pdir_ptr); WRITE_REG( SBA_IOVA(ioc, iovp, 0, 0), ioc->ioc_hpa+IOC_PCOM); } @@ -670,7 +669,7 @@ sba_mark_invalid(struct ioc *ioc, dma_addr_t iova, size_t byte_cnt) * @dev: instance of PCI owned by the driver that's asking * @mask: number of address bits this PCI device can handle * - * See Documentation/DMA-API-HOWTO.txt + * See Documentation/core-api/dma-api-howto.rst */ static int sba_dma_supported( struct device *dev, u64 mask) { @@ -682,15 +681,9 @@ static int sba_dma_supported( struct device *dev, u64 mask) return(0); } - /* Documentation/DMA-API-HOWTO.txt tells drivers to try 64-bit - * first, then fall back to 32-bit if that fails. - * We are just "encouraging" 32-bit DMA masks here since we can - * never allow IOMMU bypass unless we add special support for ZX1. - */ - if (mask > ~0U) - return 0; - ioc = GET_IOC(dev); + if (!ioc) + return 0; /* * check if mask is >= than the current max IO Virt Address @@ -708,23 +701,25 @@ static int sba_dma_supported( struct device *dev, u64 mask) * @size: number of bytes to map in driver buffer. * @direction: R/W or both. * - * See Documentation/DMA-API-HOWTO.txt + * See Documentation/core-api/dma-api-howto.rst */ static dma_addr_t -sba_map_single(struct device *dev, void *addr, size_t size, +sba_map_single(struct device *dev, phys_addr_t addr, size_t size, enum dma_data_direction direction) { struct ioc *ioc; unsigned long flags; dma_addr_t iovp; dma_addr_t offset; - u64 *pdir_start; + __le64 *pdir_start; int pide; ioc = GET_IOC(dev); + if (!ioc) + return DMA_MAPPING_ERROR; /* save offset bits */ - offset = ((dma_addr_t) (long) addr) & ~IOVP_MASK; + offset = offset_in_page(addr); /* round up to nearest IOVP_SIZE */ size = (size + offset + ~IOVP_MASK) & IOVP_MASK; @@ -741,13 +736,13 @@ sba_map_single(struct device *dev, void *addr, size_t size, pide = sba_alloc_range(ioc, dev, size); iovp = (dma_addr_t) pide << IOVP_SHIFT; - DBG_RUN("%s() 0x%p -> 0x%lx\n", - __func__, addr, (long) iovp | offset); + DBG_RUN("%s() 0x%pa -> 0x%lx\n", + __func__, &addr, (long) iovp | offset); pdir_start = &(ioc->pdir_base[pide]); while (size > 0) { - sba_io_pdir_entry(pdir_start, KERNEL_SPACE, (unsigned long) addr, 0); + sba_io_pdir_entry(pdir_start, KERNEL_SPACE, addr, 0); DBG_RUN(" pdir 0x%p %02x%02x%02x%02x%02x%02x%02x%02x\n", pdir_start, @@ -767,8 +762,7 @@ sba_map_single(struct device *dev, void *addr, size_t size, } /* force FDC ops in io_pdir_entry() to be visible to IOMMU */ - if (ioc_needs_fdc) - asm volatile("sync" : : ); + asm_io_sync(); #ifdef ASSERT_PDIR_SANITY sba_check_pdir(ioc,"Check after sba_map_single()"); @@ -780,18 +774,30 @@ sba_map_single(struct device *dev, void *addr, size_t size, } +static dma_addr_t +sba_map_phys(struct device *dev, phys_addr_t phys, size_t size, + enum dma_data_direction direction, unsigned long attrs) +{ + if (unlikely(attrs & DMA_ATTR_MMIO)) + return DMA_MAPPING_ERROR; + + return sba_map_single(dev, phys, size, direction); +} + + /** - * sba_unmap_single - unmap one IOVA and free resources + * sba_unmap_phys - unmap one IOVA and free resources * @dev: instance of PCI owned by the driver that's asking. * @iova: IOVA of driver buffer previously mapped. * @size: number of bytes mapped in driver buffer. * @direction: R/W or both. + * @attrs: attributes * - * See Documentation/DMA-API-HOWTO.txt + * See Documentation/core-api/dma-api-howto.rst */ static void -sba_unmap_single(struct device *dev, dma_addr_t iova, size_t size, - enum dma_data_direction direction) +sba_unmap_phys(struct device *dev, dma_addr_t iova, size_t size, + enum dma_data_direction direction, unsigned long attrs) { struct ioc *ioc; #if DELAYED_RESOURCE_CNT > 0 @@ -803,6 +809,10 @@ sba_unmap_single(struct device *dev, dma_addr_t iova, size_t size, DBG_RUN("%s() iovp 0x%lx/%x\n", __func__, (long) iova, size); ioc = GET_IOC(dev); + if (!ioc) { + WARN_ON(!ioc); + return; + } offset = iova & ~IOVP_MASK; iova ^= offset; /* clear offset bits */ size += offset; @@ -838,8 +848,7 @@ sba_unmap_single(struct device *dev, dma_addr_t iova, size_t size, sba_free_range(ioc, iova, size); /* If fdc's were issued, force fdc's to be visible now */ - if (ioc_needs_fdc) - asm volatile("sync" : : ); + asm_io_sync(); READ_REG(ioc->ioc_hpa+IOC_PCOM); /* flush purges */ #endif /* DELAYED_RESOURCE_CNT == 0 */ @@ -858,15 +867,17 @@ sba_unmap_single(struct device *dev, dma_addr_t iova, size_t size, /** - * sba_alloc_consistent - allocate/map shared mem for DMA + * sba_alloc - allocate/map shared mem for DMA * @hwdev: instance of PCI owned by the driver that's asking. * @size: number of bytes mapped in driver buffer. * @dma_handle: IOVA of new buffer. + * @gfp: allocation flags + * @attrs: attributes * - * See Documentation/DMA-API-HOWTO.txt + * See Documentation/core-api/dma-api-howto.rst */ -static void *sba_alloc_consistent(struct device *hwdev, size_t size, - dma_addr_t *dma_handle, gfp_t gfp) +static void *sba_alloc(struct device *hwdev, size_t size, dma_addr_t *dma_handle, + gfp_t gfp, unsigned long attrs) { void *ret; @@ -880,7 +891,7 @@ static void *sba_alloc_consistent(struct device *hwdev, size_t size, if (ret) { memset(ret, 0, size); - *dma_handle = sba_map_single(hwdev, ret, size, 0); + *dma_handle = sba_map_single(hwdev, virt_to_phys(ret), size, 0); } return ret; @@ -888,19 +899,20 @@ static void *sba_alloc_consistent(struct device *hwdev, size_t size, /** - * sba_free_consistent - free/unmap shared mem for DMA + * sba_free - free/unmap shared mem for DMA * @hwdev: instance of PCI owned by the driver that's asking. * @size: number of bytes mapped in driver buffer. * @vaddr: virtual address IOVA of "consistent" buffer. - * @dma_handler: IO virtual address of "consistent" buffer. + * @dma_handle: IO virtual address of "consistent" buffer. + * @attrs: attributes * - * See Documentation/DMA-API-HOWTO.txt + * See Documentation/core-api/dma-api-howto.rst */ static void -sba_free_consistent(struct device *hwdev, size_t size, void *vaddr, - dma_addr_t dma_handle) +sba_free(struct device *hwdev, size_t size, void *vaddr, + dma_addr_t dma_handle, unsigned long attrs) { - sba_unmap_single(hwdev, dma_handle, size, 0); + sba_unmap_phys(hwdev, dma_handle, size, 0, 0); free_pages((unsigned long) vaddr, get_order(size)); } @@ -928,25 +940,27 @@ int dump_run_sg = 0; * @sglist: array of buffer/length pairs * @nents: number of entries in list * @direction: R/W or both. + * @attrs: attributes * - * See Documentation/DMA-API-HOWTO.txt + * See Documentation/core-api/dma-api-howto.rst */ static int sba_map_sg(struct device *dev, struct scatterlist *sglist, int nents, - enum dma_data_direction direction) + enum dma_data_direction direction, unsigned long attrs) { struct ioc *ioc; - int coalesced, filled = 0; + int filled = 0; unsigned long flags; DBG_RUN_SG("%s() START %d entries\n", __func__, nents); ioc = GET_IOC(dev); + if (!ioc) + return -EINVAL; /* Fast path single entry scatterlists. */ if (nents == 1) { - sg_dma_address(sglist) = sba_map_single(dev, - (void *)sg_virt_addr(sglist), + sg_dma_address(sglist) = sba_map_single(dev, sg_phys(sglist), sglist->length, direction); sg_dma_len(sglist) = sglist->length; return 1; @@ -974,7 +988,7 @@ sba_map_sg(struct device *dev, struct scatterlist *sglist, int nents, ** w/o this association, we wouldn't have coherent DMA! ** Access to the virtual address is what forces a two pass algorithm. */ - coalesced = iommu_coalesce_chunks(ioc, dev, sglist, nents, sba_alloc_range); + iommu_coalesce_chunks(ioc, dev, sglist, nents, sba_alloc_range); /* ** Program the I/O Pdir @@ -987,8 +1001,7 @@ sba_map_sg(struct device *dev, struct scatterlist *sglist, int nents, filled = iommu_fill_pdir(ioc, sglist, nents, 0, sba_io_pdir_entry); /* force FDC ops in io_pdir_entry() to be visible to IOMMU */ - if (ioc_needs_fdc) - asm volatile("sync" : : ); + asm_io_sync(); #ifdef ASSERT_PDIR_SANITY if (sba_check_pdir(ioc,"Check after sba_map_sg()")) @@ -1012,12 +1025,13 @@ sba_map_sg(struct device *dev, struct scatterlist *sglist, int nents, * @sglist: array of buffer/length pairs * @nents: number of entries in list * @direction: R/W or both. + * @attrs: attributes * - * See Documentation/DMA-API-HOWTO.txt + * See Documentation/core-api/dma-api-howto.rst */ static void sba_unmap_sg(struct device *dev, struct scatterlist *sglist, int nents, - enum dma_data_direction direction) + enum dma_data_direction direction, unsigned long attrs) { struct ioc *ioc; #ifdef ASSERT_PDIR_SANITY @@ -1025,9 +1039,13 @@ sba_unmap_sg(struct device *dev, struct scatterlist *sglist, int nents, #endif DBG_RUN_SG("%s() START %d entries, %p,%x\n", - __func__, nents, sg_virt_addr(sglist), sglist->length); + __func__, nents, sg_virt(sglist), sglist->length); ioc = GET_IOC(dev); + if (!ioc) { + WARN_ON(!ioc); + return; + } #ifdef SBA_COLLECT_STATS ioc->usg_calls++; @@ -1039,14 +1057,16 @@ sba_unmap_sg(struct device *dev, struct scatterlist *sglist, int nents, spin_unlock_irqrestore(&ioc->res_lock, flags); #endif - while (sg_dma_len(sglist) && nents--) { + while (nents && sg_dma_len(sglist)) { - sba_unmap_single(dev, sg_dma_address(sglist), sg_dma_len(sglist), direction); + sba_unmap_phys(dev, sg_dma_address(sglist), sg_dma_len(sglist), + direction, 0); #ifdef SBA_COLLECT_STATS ioc->usg_pages += ((sg_dma_address(sglist) & ~IOVP_MASK) + sg_dma_len(sglist) + IOVP_SIZE - 1) >> PAGE_SHIFT; ioc->usingle_calls--; /* kluge since call is unmap_sg() */ #endif ++sglist; + nents--; } DBG_RUN_SG("%s() DONE (nents %d)\n", __func__, nents); @@ -1059,19 +1079,17 @@ sba_unmap_sg(struct device *dev, struct scatterlist *sglist, int nents, } -static struct hppa_dma_ops sba_ops = { +static const struct dma_map_ops sba_ops = { .dma_supported = sba_dma_supported, - .alloc_consistent = sba_alloc_consistent, - .alloc_noncoherent = sba_alloc_consistent, - .free_consistent = sba_free_consistent, - .map_single = sba_map_single, - .unmap_single = sba_unmap_single, + .alloc = sba_alloc, + .free = sba_free, + .map_phys = sba_map_phys, + .unmap_phys = sba_unmap_phys, .map_sg = sba_map_sg, .unmap_sg = sba_unmap_sg, - .dma_sync_single_for_cpu = NULL, - .dma_sync_single_for_device = NULL, - .dma_sync_sg_for_cpu = NULL, - .dma_sync_sg_for_device = NULL, + .get_sgtable = dma_common_get_sgtable, + .alloc_pages_op = dma_common_alloc_pages, + .free_pages = dma_common_free_pages, }; @@ -1215,8 +1233,6 @@ struct ibase_data_struct { static int setup_ibase_imask_callback(struct device *dev, void *data) { - /* lba_set_iregs() is in drivers/parisc/lba_pci.c */ - extern void lba_set_iregs(struct parisc_device *, u32, u32); struct parisc_device *lba = to_parisc_device(dev); struct ibase_data_struct *ibd = data; int rope_num = (lba->hpa.start >> 13) & 0xf; @@ -1265,7 +1281,7 @@ sba_ioc_init_pluto(struct parisc_device *sba, struct ioc *ioc, int ioc_num) ** (one that doesn't overlap memory or LMMIO space) in the ** IBASE and IMASK registers. */ - ioc->ibase = READ_REG(ioc->ioc_hpa + IOC_IBASE); + ioc->ibase = READ_REG(ioc->ioc_hpa + IOC_IBASE) & ~0x1fffffULL; iova_space_size = ~(READ_REG(ioc->ioc_hpa + IOC_IMASK) & 0xFFFFFFFFUL) + 1; if ((ioc->ibase < 0xfed00000UL) && ((ioc->ibase + iova_space_size) > 0xfee00000UL)) { @@ -1392,7 +1408,7 @@ sba_ioc_init(struct parisc_device *sba, struct ioc *ioc, int ioc_num) ** for DMA hints - ergo only 30 bits max. */ - iova_space_size = (u32) (totalram_pages/global_ioc_cnt); + iova_space_size = (u32) (totalram_pages()/global_ioc_cnt); /* limit IOVA space size to 1MB-1GB */ if (iova_space_size < (1 << (20 - PAGE_SHIFT))) { @@ -1414,10 +1430,10 @@ sba_ioc_init(struct parisc_device *sba, struct ioc *ioc, int ioc_num) ioc->pdir_size = pdir_size = (iova_space_size/IOVP_SIZE) * sizeof(u64); - DBG_INIT("%s() hpa 0x%lx mem %ldMB IOV %dMB (%d bits)\n", + DBG_INIT("%s() hpa %px mem %ldMB IOV %dMB (%d bits)\n", __func__, ioc->ioc_hpa, - (unsigned long) totalram_pages >> (20 - PAGE_SHIFT), + (unsigned long) totalram_pages() >> (20 - PAGE_SHIFT), iova_space_size>>20, iov_order + PAGE_SHIFT); @@ -1451,7 +1467,7 @@ sba_ioc_init(struct parisc_device *sba, struct ioc *ioc, int ioc_num) ioc->iovp_mask = ~(iova_space_mask + PAGE_SIZE - 1); #endif - DBG_INIT("%s() IOV base 0x%lx mask 0x%0lx\n", + DBG_INIT("%s() IOV base %#lx mask %#0lx\n", __func__, ioc->ibase, ioc->imask); /* @@ -1508,7 +1524,7 @@ sba_ioc_init(struct parisc_device *sba, struct ioc *ioc, int ioc_num) static void __iomem *ioc_remap(struct sba_device *sba_dev, unsigned int offset) { - return ioremap_nocache(sba_dev->dev->hpa.start + offset, SBA_FUNC_SIZE); + return ioremap(sba_dev->dev->hpa.start + offset, SBA_FUNC_SIZE); } static void sba_hw_init(struct sba_device *sba_dev) @@ -1563,7 +1579,7 @@ printk("sba_hw_init(): mem_boot 0x%x 0x%x 0x%x 0x%x\n", PAGE0->mem_boot.hpa, if (!IS_PLUTO(sba_dev->dev)) { ioc_ctl = READ_REG(sba_dev->sba_hpa+IOC_CTRL); - DBG_INIT("%s() hpa 0x%lx ioc_ctl 0x%Lx ->", + DBG_INIT("%s() hpa %px ioc_ctl 0x%Lx ->", __func__, sba_dev->sba_hpa, ioc_ctl); ioc_ctl &= ~(IOC_CTRL_RM | IOC_CTRL_NC | IOC_CTRL_CE); ioc_ctl |= IOC_CTRL_DD | IOC_CTRL_D4 | IOC_CTRL_TC; @@ -1648,14 +1664,14 @@ printk("sba_hw_init(): mem_boot 0x%x 0x%x 0x%x 0x%x\n", PAGE0->mem_boot.hpa, /* flush out the last writes */ READ_REG(sba_dev->ioc[i].ioc_hpa + ROPE7_CTL); - DBG_INIT(" ioc[%d] ROPE_CFG 0x%Lx ROPE_DBG 0x%Lx\n", + DBG_INIT(" ioc[%d] ROPE_CFG %#lx ROPE_DBG %lx\n", i, - READ_REG(sba_dev->ioc[i].ioc_hpa + 0x40), - READ_REG(sba_dev->ioc[i].ioc_hpa + 0x50) + (unsigned long) READ_REG(sba_dev->ioc[i].ioc_hpa + 0x40), + (unsigned long) READ_REG(sba_dev->ioc[i].ioc_hpa + 0x50) ); - DBG_INIT(" STATUS_CONTROL 0x%Lx FLUSH_CTRL 0x%Lx\n", - READ_REG(sba_dev->ioc[i].ioc_hpa + 0x108), - READ_REG(sba_dev->ioc[i].ioc_hpa + 0x400) + DBG_INIT(" STATUS_CONTROL %#lx FLUSH_CTRL %#lx\n", + (unsigned long) READ_REG(sba_dev->ioc[i].ioc_hpa + 0x108), + (unsigned long) READ_REG(sba_dev->ioc[i].ioc_hpa + 0x400) ); if (IS_PLUTO(sba_dev->dev)) { @@ -1719,7 +1735,7 @@ sba_common_init(struct sba_device *sba_dev) #ifdef ASSERT_PDIR_SANITY /* Mark first bit busy - ie no IOVA 0 */ sba_dev->ioc[i].res_map[0] = 0x80; - sba_dev->ioc[i].pdir_base[0] = 0xeeffc0addbba0080ULL; + sba_dev->ioc[i].pdir_base[0] = (__force __le64) 0xeeffc0addbba0080ULL; #endif /* Third (and last) part of PIRANHA BUG */ @@ -1774,37 +1790,35 @@ static int sba_proc_info(struct seq_file *m, void *p) #ifdef SBA_COLLECT_STATS unsigned long avg = 0, min, max; #endif - int i, len = 0; - - len += seq_printf(m, "%s rev %d.%d\n", - sba_dev->name, - (sba_dev->hw_rev & 0x7) + 1, - (sba_dev->hw_rev & 0x18) >> 3 - ); - len += seq_printf(m, "IO PDIR size : %d bytes (%d entries)\n", - (int) ((ioc->res_size << 3) * sizeof(u64)), /* 8 bits/byte */ - total_pages); - - len += seq_printf(m, "Resource bitmap : %d bytes (%d pages)\n", - ioc->res_size, ioc->res_size << 3); /* 8 bits per byte */ - - len += seq_printf(m, "LMMIO_BASE/MASK/ROUTE %08x %08x %08x\n", - READ_REG32(sba_dev->sba_hpa + LMMIO_DIST_BASE), - READ_REG32(sba_dev->sba_hpa + LMMIO_DIST_MASK), - READ_REG32(sba_dev->sba_hpa + LMMIO_DIST_ROUTE) - ); + int i; + + seq_printf(m, "%s rev %d.%d\n", + sba_dev->name, + (sba_dev->hw_rev & 0x7) + 1, + (sba_dev->hw_rev & 0x18) >> 3); + seq_printf(m, "IO PDIR size : %d bytes (%d entries)\n", + (int)((ioc->res_size << 3) * sizeof(u64)), /* 8 bits/byte */ + total_pages); + + seq_printf(m, "Resource bitmap : %d bytes (%d pages)\n", + ioc->res_size, ioc->res_size << 3); /* 8 bits per byte */ + + seq_printf(m, "LMMIO_BASE/MASK/ROUTE %08x %08x %08x\n", + READ_REG32(sba_dev->sba_hpa + LMMIO_DIST_BASE), + READ_REG32(sba_dev->sba_hpa + LMMIO_DIST_MASK), + READ_REG32(sba_dev->sba_hpa + LMMIO_DIST_ROUTE)); for (i=0; i<4; i++) - len += seq_printf(m, "DIR%d_BASE/MASK/ROUTE %08x %08x %08x\n", i, - READ_REG32(sba_dev->sba_hpa + LMMIO_DIRECT0_BASE + i*0x18), - READ_REG32(sba_dev->sba_hpa + LMMIO_DIRECT0_MASK + i*0x18), - READ_REG32(sba_dev->sba_hpa + LMMIO_DIRECT0_ROUTE + i*0x18) - ); + seq_printf(m, "DIR%d_BASE/MASK/ROUTE %08x %08x %08x\n", + i, + READ_REG32(sba_dev->sba_hpa + LMMIO_DIRECT0_BASE + i*0x18), + READ_REG32(sba_dev->sba_hpa + LMMIO_DIRECT0_MASK + i*0x18), + READ_REG32(sba_dev->sba_hpa + LMMIO_DIRECT0_ROUTE + i*0x18)); #ifdef SBA_COLLECT_STATS - len += seq_printf(m, "IO PDIR entries : %ld free %ld used (%d%%)\n", - total_pages - ioc->used_pages, ioc->used_pages, - (int) (ioc->used_pages * 100 / total_pages)); + seq_printf(m, "IO PDIR entries : %ld free %ld used (%d%%)\n", + total_pages - ioc->used_pages, ioc->used_pages, + (int)(ioc->used_pages * 100 / total_pages)); min = max = ioc->avg_search[0]; for (i = 0; i < SBA_SEARCH_SAMPLE; i++) { @@ -1813,79 +1827,46 @@ static int sba_proc_info(struct seq_file *m, void *p) if (ioc->avg_search[i] < min) min = ioc->avg_search[i]; } avg /= SBA_SEARCH_SAMPLE; - len += seq_printf(m, " Bitmap search : %ld/%ld/%ld (min/avg/max CPU Cycles)\n", - min, avg, max); + seq_printf(m, " Bitmap search : %ld/%ld/%ld (min/avg/max CPU Cycles)\n", + min, avg, max); - len += seq_printf(m, "pci_map_single(): %12ld calls %12ld pages (avg %d/1000)\n", - ioc->msingle_calls, ioc->msingle_pages, - (int) ((ioc->msingle_pages * 1000)/ioc->msingle_calls)); + seq_printf(m, "pci_map_single(): %12ld calls %12ld pages (avg %d/1000)\n", + ioc->msingle_calls, ioc->msingle_pages, + (int)((ioc->msingle_pages * 1000)/ioc->msingle_calls)); /* KLUGE - unmap_sg calls unmap_single for each mapped page */ min = ioc->usingle_calls; max = ioc->usingle_pages - ioc->usg_pages; - len += seq_printf(m, "pci_unmap_single: %12ld calls %12ld pages (avg %d/1000)\n", - min, max, (int) ((max * 1000)/min)); + seq_printf(m, "pci_unmap_single: %12ld calls %12ld pages (avg %d/1000)\n", + min, max, (int)((max * 1000)/min)); - len += seq_printf(m, "pci_map_sg() : %12ld calls %12ld pages (avg %d/1000)\n", - ioc->msg_calls, ioc->msg_pages, - (int) ((ioc->msg_pages * 1000)/ioc->msg_calls)); + seq_printf(m, "pci_map_sg() : %12ld calls %12ld pages (avg %d/1000)\n", + ioc->msg_calls, ioc->msg_pages, + (int)((ioc->msg_pages * 1000)/ioc->msg_calls)); - len += seq_printf(m, "pci_unmap_sg() : %12ld calls %12ld pages (avg %d/1000)\n", - ioc->usg_calls, ioc->usg_pages, - (int) ((ioc->usg_pages * 1000)/ioc->usg_calls)); + seq_printf(m, "pci_unmap_sg() : %12ld calls %12ld pages (avg %d/1000)\n", + ioc->usg_calls, ioc->usg_pages, + (int)((ioc->usg_pages * 1000)/ioc->usg_calls)); #endif return 0; } static int -sba_proc_open(struct inode *i, struct file *f) -{ - return single_open(f, &sba_proc_info, NULL); -} - -static const struct file_operations sba_proc_fops = { - .owner = THIS_MODULE, - .open = sba_proc_open, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, -}; - -static int sba_proc_bitmap_info(struct seq_file *m, void *p) { struct sba_device *sba_dev = sba_list; struct ioc *ioc = &sba_dev->ioc[0]; /* FIXME: Multi-IOC support! */ - unsigned int *res_ptr = (unsigned int *)ioc->res_map; - int i, len = 0; - for (i = 0; i < (ioc->res_size/sizeof(unsigned int)); ++i, ++res_ptr) { - if ((i & 7) == 0) - len += seq_printf(m, "\n "); - len += seq_printf(m, " %08x", *res_ptr); - } - len += seq_printf(m, "\n"); + seq_hex_dump(m, " ", DUMP_PREFIX_NONE, 32, 4, ioc->res_map, + ioc->res_size, false); + seq_putc(m, '\n'); return 0; } - -static int -sba_proc_bitmap_open(struct inode *i, struct file *f) -{ - return single_open(f, &sba_proc_bitmap_info, NULL); -} - -static const struct file_operations sba_proc_bitmap_fops = { - .owner = THIS_MODULE, - .open = sba_proc_bitmap_open, - .read = seq_read, - .llseek = seq_lseek, - .release = single_release, -}; #endif /* CONFIG_PROC_FS */ -static struct parisc_device_id sba_tbl[] = { +static const struct parisc_device_id sba_tbl[] __initconst = { { HPHW_IOA, HVERSION_REV_ANY_ID, ASTRO_RUNWAY_PORT, 0xb }, { HPHW_BCPORT, HVERSION_REV_ANY_ID, IKE_MERCED_PORT, 0xc }, { HPHW_BCPORT, HVERSION_REV_ANY_ID, REO_MERCED_PORT, 0xc }, @@ -1896,7 +1877,7 @@ static struct parisc_device_id sba_tbl[] = { static int sba_driver_callback(struct parisc_device *); -static struct parisc_driver sba_driver = { +static struct parisc_driver sba_driver __refdata = { .name = MODULE_NAME, .id_table = sba_tbl, .probe = sba_driver_callback, @@ -1907,16 +1888,14 @@ static struct parisc_driver sba_driver = { ** If so, initialize the chip and tell other partners in crime they ** have work to do. */ -static int sba_driver_callback(struct parisc_device *dev) +static int __init sba_driver_callback(struct parisc_device *dev) { struct sba_device *sba_dev; u32 func_class; int i; char *version; - void __iomem *sba_addr = ioremap_nocache(dev->hpa.start, SBA_FUNC_SIZE); -#ifdef CONFIG_PROC_FS - struct proc_dir_entry *root; -#endif + void __iomem *sba_addr = ioremap(dev->hpa.start, SBA_FUNC_SIZE); + struct proc_dir_entry *root __maybe_unused; sba_dump_ranges(sba_addr); @@ -1982,23 +1961,23 @@ static int sba_driver_callback(struct parisc_device *dev) hppa_dma_ops = &sba_ops; -#ifdef CONFIG_PROC_FS switch (dev->id.hversion) { case PLUTO_MCKINLEY_PORT: + if (!proc_mckinley_root) + proc_mckinley_root = proc_mkdir("bus/mckinley", NULL); root = proc_mckinley_root; break; case ASTRO_RUNWAY_PORT: case IKE_MERCED_PORT: default: + if (!proc_runway_root) + proc_runway_root = proc_mkdir("bus/runway", NULL); root = proc_runway_root; break; } - proc_create("sba_iommu", 0, root, &sba_proc_fops); - proc_create("sba_iommu-bitmap", 0, root, &sba_proc_bitmap_fops); -#endif - - parisc_has_iommu(); + proc_create_single("sba_iommu", 0, root, sba_proc_info); + proc_create_single("sba_iommu-bitmap", 0, root, sba_proc_bitmap_info); return 0; } @@ -2007,15 +1986,16 @@ static int sba_driver_callback(struct parisc_device *dev) ** This is the only routine which is NOT static. ** Must be called exactly once before pci_init(). */ -void __init sba_init(void) +static int __init sba_init(void) { - register_parisc_driver(&sba_driver); + return register_parisc_driver(&sba_driver); } +arch_initcall(sba_init); /** * sba_get_iommu - Assign the iommu pointer for the pci bus controller. - * @dev: The parisc device. + * @pci_hba: The parisc device. * * Returns the appropriate IOMMU data for the given parisc PCI controller. * This is cached and used later for PCI DMA Mapping. @@ -2025,7 +2005,7 @@ void * sba_get_iommu(struct parisc_device *pci_hba) struct parisc_device *sba_dev = parisc_parent(pci_hba); struct sba_device *sba = dev_get_drvdata(&sba_dev->dev); char t = sba_dev->id.hw_type; - int iocnum = (pci_hba->hw_path >> 3); /* rope # */ + int iocnum = (pci_hba->hw_path >> 3); /* IOC # */ WARN_ON((t != HPHW_IOA) && (t != HPHW_BCPORT)); @@ -2035,7 +2015,7 @@ void * sba_get_iommu(struct parisc_device *pci_hba) /** * sba_directed_lmmio - return first directed LMMIO range routed to rope - * @pa_dev: The parisc device. + * @pci_hba: The parisc device. * @r: resource PCI host controller wants start/end fields assigned. * * For the given parisc PCI controller, determine if any direct ranges @@ -2077,7 +2057,7 @@ void sba_directed_lmmio(struct parisc_device *pci_hba, struct resource *r) /** * sba_distributed_lmmio - return portion of distributed LMMIO range - * @pa_dev: The parisc device. + * @pci_hba: The parisc device. * @r: resource PCI host controller wants start/end fields assigned. * * For the given parisc PCI controller, return portion of distributed LMMIO diff --git a/drivers/parisc/superio.c b/drivers/parisc/superio.c index a042d065a0c7..e973c6893203 100644 --- a/drivers/parisc/superio.c +++ b/drivers/parisc/superio.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* National Semiconductor NS87560UBD Super I/O controller used in * HP [BCJ]x000 workstations. * @@ -14,11 +15,6 @@ * (C) Copyright 2005 Kyle McMartin <kyle@parisc-linux.org> * (C) Copyright 2006 Helge Deller <deller@gmx.de> * - * 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. - * * The initial version of this is by Martin Peterson. Alex deVries * has spent a bit of time trying to coax it into working. * @@ -348,7 +344,7 @@ int superio_fixup_irq(struct pci_dev *pcidev) BUG(); return -1; } - printk("superio_fixup_irq(%s) ven 0x%x dev 0x%x from %pf\n", + printk(KERN_DEBUG "superio_fixup_irq(%s) ven 0x%x dev 0x%x from %ps\n", pci_name(pcidev), pcidev->vendor, pcidev->device, __builtin_return_address(0)); @@ -395,7 +391,8 @@ static void __init superio_serial_init(void) serial_port.iotype = UPIO_PORT; serial_port.type = PORT_16550A; serial_port.uartclk = 115200*16; - serial_port.fifosize = 16; + serial_port.flags = UPF_FIXED_PORT | UPF_FIXED_TYPE | + UPF_BOOT_AUTOCONF; /* serial port #1 */ serial_port.iobase = sio_dev.sp1_base; @@ -481,14 +478,14 @@ superio_probe(struct pci_dev *dev, const struct pci_device_id *id) return -ENODEV; } -static const struct pci_device_id superio_tbl[] = { +static const struct pci_device_id superio_tbl[] __initconst = { { PCI_DEVICE(PCI_VENDOR_ID_NS, PCI_DEVICE_ID_NS_87560_LIO) }, { PCI_DEVICE(PCI_VENDOR_ID_NS, PCI_DEVICE_ID_NS_87560_USB) }, { PCI_DEVICE(PCI_VENDOR_ID_NS, PCI_DEVICE_ID_NS_87415) }, { 0, } }; -static struct pci_driver superio_driver = { +static struct pci_driver superio_driver __refdata = { .name = SUPERIO, .id_table = superio_tbl, .probe = superio_probe, diff --git a/drivers/parisc/wax.c b/drivers/parisc/wax.c index da9d5ad1353c..834dbe9a767b 100644 --- a/drivers/parisc/wax.c +++ b/drivers/parisc/wax.c @@ -1,14 +1,10 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* * WAX Device Driver * * (c) Copyright 2000 The Puffin Group Inc. * - * 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. - * - * by Helge Deller <deller@gmx.de> + * (c) 2000-2023 by Helge Deller <deller@gmx.de> */ #include <linux/errno.h> @@ -72,7 +68,6 @@ static int __init wax_init_chip(struct parisc_device *dev) { struct gsc_asic *wax; struct parisc_device *parent; - struct gsc_irq gsc_irq; int ret; wax = kzalloc(sizeof(*wax), GFP_KERNEL); @@ -89,7 +84,7 @@ static int __init wax_init_chip(struct parisc_device *dev) wax_init_irq(wax); /* the IRQ wax should use */ - dev->irq = gsc_claim_irq(&gsc_irq, WAX_GSC_IRQ); + dev->irq = gsc_claim_irq(&wax->gsc_irq, WAX_GSC_IRQ); if (dev->irq < 0) { printk(KERN_ERR "%s(): cannot get GSC irq\n", __func__); @@ -97,9 +92,9 @@ static int __init wax_init_chip(struct parisc_device *dev) return -EBUSY; } - wax->eim = ((u32) gsc_irq.txn_addr) | gsc_irq.txn_data; + wax->eim = ((u32) wax->gsc_irq.txn_addr) | wax->gsc_irq.txn_data; - ret = request_irq(gsc_irq.irq, gsc_asic_intr, 0, "wax", wax); + ret = request_irq(wax->gsc_irq.irq, gsc_asic_intr, 0, "wax", wax); if (ret < 0) { kfree(wax); return ret; @@ -125,15 +120,21 @@ static int __init wax_init_chip(struct parisc_device *dev) return ret; } -static struct parisc_device_id wax_tbl[] = { - { HPHW_BA, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, 0x0008e }, +static const struct parisc_device_id wax_tbl[] __initconst = { + { HPHW_BA, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, 0x0008e }, { 0, } }; MODULE_DEVICE_TABLE(parisc, wax_tbl); -struct parisc_driver wax_driver = { +static struct parisc_driver wax_driver __refdata = { .name = "wax", .id_table = wax_tbl, .probe = wax_init_chip, }; + +static int __init wax_init(void) +{ + return register_parisc_driver(&wax_driver); +} +arch_initcall(wax_init); |