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authorLinus Torvalds <torvalds@linux-foundation.org>2019-09-16 15:32:01 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2019-09-16 15:32:01 -0700
commit76f0f227cffb570bc5ce343b1750f14907371d80 (patch)
tree7bbbf7174a7c7cc834936a18a73fc95161b4228e /drivers/char
parent58d4fafd0b4c36838077a5d7b17df537b7226f1c (diff)
parent0d3d343560bad8e1b7879fe94251cfe731a2dd13 (diff)
Merge tag 'please-pull-ia64_for_5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux
Pull ia64 updates from Tony Luck: "The big change here is removal of support for SGI Altix" * tag 'please-pull-ia64_for_5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux: (33 commits) genirq: remove the is_affinity_mask_valid hook ia64: remove CONFIG_SWIOTLB ifdefs ia64: remove support for machvecs ia64: move the screen_info setup to common code ia64: move the ROOT_DEV setup to common code ia64: rework iommu probing ia64: remove the unused sn_coherency_id symbol ia64: remove the SGI UV simulator support ia64: remove the zx1 swiotlb machvec ia64: remove CONFIG_ACPI ifdefs ia64: remove CONFIG_PCI ifdefs ia64: remove the hpsim platform ia64: remove now unused machvec indirections ia64: remove support for the SGI SN2 platform drivers: remove the SGI SN2 IOC4 base support drivers: remove the SGI SN2 IOC3 base support qla2xxx: remove SGI SN2 support qla1280: remove SGI SN2 support misc/sgi-xp: remove SGI SN2 support char/mspec: remove SGI SN2 support ...
Diffstat (limited to 'drivers/char')
-rw-r--r--drivers/char/Kconfig22
-rw-r--r--drivers/char/Makefile2
-rw-r--r--drivers/char/agp/Kconfig11
-rw-r--r--drivers/char/agp/Makefile1
-rw-r--r--drivers/char/agp/sgi-agp.c338
-rw-r--r--drivers/char/mbcs.c831
-rw-r--r--drivers/char/mbcs.h553
-rw-r--r--drivers/char/mspec.c155
-rw-r--r--drivers/char/snsc.c469
-rw-r--r--drivers/char/snsc.h92
-rw-r--r--drivers/char/snsc_event.c303
11 files changed, 13 insertions, 2764 deletions
diff --git a/drivers/char/Kconfig b/drivers/char/Kconfig
index 2794f4b3f62d..df0fc997dc3e 100644
--- a/drivers/char/Kconfig
+++ b/drivers/char/Kconfig
@@ -26,28 +26,6 @@ config DEVKMEM
kind of kernel debugging operations.
When in doubt, say "N".
-config SGI_SNSC
- bool "SGI Altix system controller communication support"
- depends on (IA64_SGI_SN2 || IA64_GENERIC)
- help
- If you have an SGI Altix and you want to enable system
- controller communication from user space (you want this!),
- say Y. Otherwise, say N.
-
-config SGI_TIOCX
- bool "SGI TIO CX driver support"
- depends on (IA64_SGI_SN2 || IA64_GENERIC)
- help
- If you have an SGI Altix and you have fpga devices attached
- to your TIO, say Y here, otherwise say N.
-
-config SGI_MBCS
- tristate "SGI FPGA Core Services driver support"
- depends on SGI_TIOCX
- help
- If you have an SGI Altix with an attached SABrick
- say Y or M here, otherwise say N.
-
source "drivers/tty/serial/Kconfig"
source "drivers/tty/serdev/Kconfig"
diff --git a/drivers/char/Makefile b/drivers/char/Makefile
index fbea7dd12932..7c5ea6f9df14 100644
--- a/drivers/char/Makefile
+++ b/drivers/char/Makefile
@@ -9,11 +9,9 @@ obj-y += misc.o
obj-$(CONFIG_ATARI_DSP56K) += dsp56k.o
obj-$(CONFIG_VIRTIO_CONSOLE) += virtio_console.o
obj-$(CONFIG_RAW_DRIVER) += raw.o
-obj-$(CONFIG_SGI_SNSC) += snsc.o snsc_event.o
obj-$(CONFIG_MSPEC) += mspec.o
obj-$(CONFIG_UV_MMTIMER) += uv_mmtimer.o
obj-$(CONFIG_IBM_BSR) += bsr.o
-obj-$(CONFIG_SGI_MBCS) += mbcs.o
obj-$(CONFIG_PRINTER) += lp.o
diff --git a/drivers/char/agp/Kconfig b/drivers/char/agp/Kconfig
index 6231714ef3c8..812d6aa6e013 100644
--- a/drivers/char/agp/Kconfig
+++ b/drivers/char/agp/Kconfig
@@ -111,14 +111,14 @@ config AGP_VIA
config AGP_I460
tristate "Intel 460GX chipset support"
- depends on AGP && (IA64_DIG || IA64_GENERIC)
+ depends on AGP && IA64
help
This option gives you AGP GART support for the Intel 460GX chipset
for IA64 processors.
config AGP_HP_ZX1
tristate "HP ZX1 chipset AGP support"
- depends on AGP && (IA64_HP_ZX1 || IA64_HP_ZX1_SWIOTLB || IA64_GENERIC)
+ depends on AGP && IA64
help
This option gives you AGP GART support for the HP ZX1 chipset
for IA64 processors.
@@ -150,13 +150,6 @@ config AGP_EFFICEON
This option gives you AGP support for the Transmeta Efficeon
series processors with integrated northbridges.
-config AGP_SGI_TIOCA
- tristate "SGI TIO chipset AGP support"
- depends on AGP && (IA64_SGI_SN2 || IA64_GENERIC)
- help
- This option gives you AGP GART support for the SGI TIO chipset
- for IA64 processors.
-
config INTEL_GTT
tristate
depends on X86 && PCI
diff --git a/drivers/char/agp/Makefile b/drivers/char/agp/Makefile
index 4a786ffd9dee..cb2497d157f6 100644
--- a/drivers/char/agp/Makefile
+++ b/drivers/char/agp/Makefile
@@ -16,7 +16,6 @@ obj-$(CONFIG_AGP_I460) += i460-agp.o
obj-$(CONFIG_AGP_INTEL) += intel-agp.o
obj-$(CONFIG_INTEL_GTT) += intel-gtt.o
obj-$(CONFIG_AGP_NVIDIA) += nvidia-agp.o
-obj-$(CONFIG_AGP_SGI_TIOCA) += sgi-agp.o
obj-$(CONFIG_AGP_SIS) += sis-agp.o
obj-$(CONFIG_AGP_SWORKS) += sworks-agp.o
obj-$(CONFIG_AGP_UNINORTH) += uninorth-agp.o
diff --git a/drivers/char/agp/sgi-agp.c b/drivers/char/agp/sgi-agp.c
deleted file mode 100644
index e7d5bdc02d93..000000000000
--- a/drivers/char/agp/sgi-agp.c
+++ /dev/null
@@ -1,338 +0,0 @@
-/*
- * This file is subject to the terms and conditions of the GNU General Public
- * License. See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * Copyright (C) 2003-2005 Silicon Graphics, Inc. All Rights Reserved.
- */
-
-/*
- * SGI TIOCA AGPGART routines.
- *
- */
-
-#include <linux/acpi.h>
-#include <linux/module.h>
-#include <linux/pci.h>
-#include <linux/slab.h>
-#include <linux/agp_backend.h>
-#include <asm/sn/addrs.h>
-#include <asm/sn/io.h>
-#include <asm/sn/pcidev.h>
-#include <asm/sn/pcibus_provider_defs.h>
-#include <asm/sn/tioca_provider.h>
-#include "agp.h"
-
-extern int agp_memory_reserved;
-extern uint32_t tioca_gart_found;
-extern struct list_head tioca_list;
-static struct agp_bridge_data **sgi_tioca_agp_bridges;
-
-/*
- * The aperature size and related information is set up at TIOCA init time.
- * Values for this table will be extracted and filled in at
- * sgi_tioca_fetch_size() time.
- */
-
-static struct aper_size_info_fixed sgi_tioca_sizes[] = {
- {0, 0, 0},
-};
-
-static struct page *sgi_tioca_alloc_page(struct agp_bridge_data *bridge)
-{
- struct page *page;
- int nid;
- struct tioca_kernel *info =
- (struct tioca_kernel *)bridge->dev_private_data;
-
- nid = info->ca_closest_node;
- page = alloc_pages_node(nid, GFP_KERNEL, 0);
- if (!page)
- return NULL;
-
- get_page(page);
- atomic_inc(&agp_bridge->current_memory_agp);
- return page;
-}
-
-/*
- * Flush GART tlb's. Cannot selectively flush based on memory so the mem
- * arg is ignored.
- */
-
-static void sgi_tioca_tlbflush(struct agp_memory *mem)
-{
- tioca_tlbflush(mem->bridge->dev_private_data);
-}
-
-/*
- * Given an address of a host physical page, turn it into a valid gart
- * entry.
- */
-static unsigned long
-sgi_tioca_mask_memory(struct agp_bridge_data *bridge, dma_addr_t addr,
- int type)
-{
- return tioca_physpage_to_gart(addr);
-}
-
-static void sgi_tioca_agp_enable(struct agp_bridge_data *bridge, u32 mode)
-{
- tioca_fastwrite_enable(bridge->dev_private_data);
-}
-
-/*
- * sgi_tioca_configure() doesn't have anything to do since the base CA driver
- * has alreay set up the GART.
- */
-
-static int sgi_tioca_configure(void)
-{
- return 0;
-}
-
-/*
- * Determine gfx aperature size. This has already been determined by the
- * CA driver init, so just need to set agp_bridge values accordingly.
- */
-
-static int sgi_tioca_fetch_size(void)
-{
- struct tioca_kernel *info =
- (struct tioca_kernel *)agp_bridge->dev_private_data;
-
- sgi_tioca_sizes[0].size = info->ca_gfxap_size / MB(1);
- sgi_tioca_sizes[0].num_entries = info->ca_gfxgart_entries;
-
- return sgi_tioca_sizes[0].size;
-}
-
-static int sgi_tioca_create_gatt_table(struct agp_bridge_data *bridge)
-{
- struct tioca_kernel *info =
- (struct tioca_kernel *)bridge->dev_private_data;
-
- bridge->gatt_table_real = (u32 *) info->ca_gfxgart;
- bridge->gatt_table = bridge->gatt_table_real;
- bridge->gatt_bus_addr = info->ca_gfxgart_base;
-
- return 0;
-}
-
-static int sgi_tioca_free_gatt_table(struct agp_bridge_data *bridge)
-{
- return 0;
-}
-
-static int sgi_tioca_insert_memory(struct agp_memory *mem, off_t pg_start,
- int type)
-{
- int num_entries;
- size_t i;
- off_t j;
- void *temp;
- struct agp_bridge_data *bridge;
- u64 *table;
-
- bridge = mem->bridge;
- if (!bridge)
- return -EINVAL;
-
- table = (u64 *)bridge->gatt_table;
-
- temp = bridge->current_size;
-
- switch (bridge->driver->size_type) {
- case U8_APER_SIZE:
- num_entries = A_SIZE_8(temp)->num_entries;
- break;
- case U16_APER_SIZE:
- num_entries = A_SIZE_16(temp)->num_entries;
- break;
- case U32_APER_SIZE:
- num_entries = A_SIZE_32(temp)->num_entries;
- break;
- case FIXED_APER_SIZE:
- num_entries = A_SIZE_FIX(temp)->num_entries;
- break;
- case LVL2_APER_SIZE:
- return -EINVAL;
- default:
- num_entries = 0;
- break;
- }
-
- num_entries -= agp_memory_reserved / PAGE_SIZE;
- if (num_entries < 0)
- num_entries = 0;
-
- if (type != 0 || mem->type != 0) {
- return -EINVAL;
- }
-
- if ((pg_start + mem->page_count) > num_entries)
- return -EINVAL;
-
- j = pg_start;
-
- while (j < (pg_start + mem->page_count)) {
- if (table[j])
- return -EBUSY;
- j++;
- }
-
- if (!mem->is_flushed) {
- bridge->driver->cache_flush();
- mem->is_flushed = true;
- }
-
- for (i = 0, j = pg_start; i < mem->page_count; i++, j++) {
- table[j] =
- bridge->driver->mask_memory(bridge,
- page_to_phys(mem->pages[i]),
- mem->type);
- }
-
- bridge->driver->tlb_flush(mem);
- return 0;
-}
-
-static int sgi_tioca_remove_memory(struct agp_memory *mem, off_t pg_start,
- int type)
-{
- size_t i;
- struct agp_bridge_data *bridge;
- u64 *table;
-
- bridge = mem->bridge;
- if (!bridge)
- return -EINVAL;
-
- if (type != 0 || mem->type != 0) {
- return -EINVAL;
- }
-
- table = (u64 *)bridge->gatt_table;
-
- for (i = pg_start; i < (mem->page_count + pg_start); i++) {
- table[i] = 0;
- }
-
- bridge->driver->tlb_flush(mem);
- return 0;
-}
-
-static void sgi_tioca_cache_flush(void)
-{
-}
-
-/*
- * Cleanup. Nothing to do as the CA driver owns the GART.
- */
-
-static void sgi_tioca_cleanup(void)
-{
-}
-
-static struct agp_bridge_data *sgi_tioca_find_bridge(struct pci_dev *pdev)
-{
- struct agp_bridge_data *bridge;
-
- list_for_each_entry(bridge, &agp_bridges, list) {
- if (bridge->dev->bus == pdev->bus)
- break;
- }
- return bridge;
-}
-
-const struct agp_bridge_driver sgi_tioca_driver = {
- .owner = THIS_MODULE,
- .size_type = U16_APER_SIZE,
- .configure = sgi_tioca_configure,
- .fetch_size = sgi_tioca_fetch_size,
- .cleanup = sgi_tioca_cleanup,
- .tlb_flush = sgi_tioca_tlbflush,
- .mask_memory = sgi_tioca_mask_memory,
- .agp_enable = sgi_tioca_agp_enable,
- .cache_flush = sgi_tioca_cache_flush,
- .create_gatt_table = sgi_tioca_create_gatt_table,
- .free_gatt_table = sgi_tioca_free_gatt_table,
- .insert_memory = sgi_tioca_insert_memory,
- .remove_memory = sgi_tioca_remove_memory,
- .alloc_by_type = agp_generic_alloc_by_type,
- .free_by_type = agp_generic_free_by_type,
- .agp_alloc_page = sgi_tioca_alloc_page,
- .agp_destroy_page = agp_generic_destroy_page,
- .agp_type_to_mask_type = agp_generic_type_to_mask_type,
- .cant_use_aperture = true,
- .needs_scratch_page = false,
- .num_aperture_sizes = 1,
-};
-
-static int agp_sgi_init(void)
-{
- unsigned int j;
- struct tioca_kernel *info;
- struct pci_dev *pdev = NULL;
-
- if (tioca_gart_found)
- printk(KERN_INFO PFX "SGI TIO CA GART driver initialized.\n");
- else
- return 0;
-
- sgi_tioca_agp_bridges = kmalloc_array(tioca_gart_found,
- sizeof(struct agp_bridge_data *),
- GFP_KERNEL);
- if (!sgi_tioca_agp_bridges)
- return -ENOMEM;
-
- j = 0;
- list_for_each_entry(info, &tioca_list, ca_list) {
- if (list_empty(info->ca_devices))
- continue;
- list_for_each_entry(pdev, info->ca_devices, bus_list) {
- u8 cap_ptr;
-
- if (pdev->class != (PCI_CLASS_DISPLAY_VGA << 8))
- continue;
- cap_ptr = pci_find_capability(pdev, PCI_CAP_ID_AGP);
- if (!cap_ptr)
- continue;
- }
- sgi_tioca_agp_bridges[j] = agp_alloc_bridge();
- printk(KERN_INFO PFX "bridge %d = 0x%p\n", j,
- sgi_tioca_agp_bridges[j]);
- if (sgi_tioca_agp_bridges[j]) {
- sgi_tioca_agp_bridges[j]->dev = pdev;
- sgi_tioca_agp_bridges[j]->dev_private_data = info;
- sgi_tioca_agp_bridges[j]->driver = &sgi_tioca_driver;
- sgi_tioca_agp_bridges[j]->gart_bus_addr =
- info->ca_gfxap_base;
- sgi_tioca_agp_bridges[j]->mode = (0x7D << 24) | /* 126 requests */
- (0x1 << 9) | /* SBA supported */
- (0x1 << 5) | /* 64-bit addresses supported */
- (0x1 << 4) | /* FW supported */
- (0x1 << 3) | /* AGP 3.0 mode */
- 0x2; /* 8x transfer only */
- sgi_tioca_agp_bridges[j]->current_size =
- sgi_tioca_agp_bridges[j]->previous_size =
- (void *)&sgi_tioca_sizes[0];
- agp_add_bridge(sgi_tioca_agp_bridges[j]);
- }
- j++;
- }
-
- agp_find_bridge = &sgi_tioca_find_bridge;
- return 0;
-}
-
-static void agp_sgi_cleanup(void)
-{
- kfree(sgi_tioca_agp_bridges);
- sgi_tioca_agp_bridges = NULL;
-}
-
-module_init(agp_sgi_init);
-module_exit(agp_sgi_cleanup);
-
-MODULE_LICENSE("GPL and additional rights");
diff --git a/drivers/char/mbcs.c b/drivers/char/mbcs.c
deleted file mode 100644
index 0a31b60bee7b..000000000000
--- a/drivers/char/mbcs.c
+++ /dev/null
@@ -1,831 +0,0 @@
-/*
- * This file is subject to the terms and conditions of the GNU General Public
- * License. See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * Copyright (c) 2005 Silicon Graphics, Inc. All rights reserved.
- */
-
-/*
- * MOATB Core Services driver.
- */
-
-#include <linux/interrupt.h>
-#include <linux/module.h>
-#include <linux/moduleparam.h>
-#include <linux/types.h>
-#include <linux/ioport.h>
-#include <linux/kernel.h>
-#include <linux/notifier.h>
-#include <linux/reboot.h>
-#include <linux/init.h>
-#include <linux/fs.h>
-#include <linux/delay.h>
-#include <linux/device.h>
-#include <linux/mm.h>
-#include <linux/uio.h>
-#include <linux/mutex.h>
-#include <linux/slab.h>
-#include <linux/pagemap.h>
-#include <asm/io.h>
-#include <linux/uaccess.h>
-#include <asm/pgtable.h>
-#include <asm/sn/addrs.h>
-#include <asm/sn/intr.h>
-#include <asm/sn/tiocx.h>
-#include "mbcs.h"
-
-#define MBCS_DEBUG 0
-#if MBCS_DEBUG
-#define DBG(fmt...) printk(KERN_ALERT fmt)
-#else
-#define DBG(fmt...)
-#endif
-static DEFINE_MUTEX(mbcs_mutex);
-static int mbcs_major;
-
-static LIST_HEAD(soft_list);
-
-/*
- * file operations
- */
-static const struct file_operations mbcs_ops = {
- .owner = THIS_MODULE,
- .open = mbcs_open,
- .llseek = mbcs_sram_llseek,
- .read = mbcs_sram_read,
- .write = mbcs_sram_write,
- .mmap = mbcs_gscr_mmap,
-};
-
-struct mbcs_callback_arg {
- int minor;
- struct cx_dev *cx_dev;
-};
-
-static inline void mbcs_getdma_init(struct getdma *gdma)
-{
- memset(gdma, 0, sizeof(struct getdma));
- gdma->DoneIntEnable = 1;
-}
-
-static inline void mbcs_putdma_init(struct putdma *pdma)
-{
- memset(pdma, 0, sizeof(struct putdma));
- pdma->DoneIntEnable = 1;
-}
-
-static inline void mbcs_algo_init(struct algoblock *algo_soft)
-{
- memset(algo_soft, 0, sizeof(struct algoblock));
-}
-
-static inline void mbcs_getdma_set(void *mmr,
- uint64_t hostAddr,
- uint64_t localAddr,
- uint64_t localRamSel,
- uint64_t numPkts,
- uint64_t amoEnable,
- uint64_t intrEnable,
- uint64_t peerIO,
- uint64_t amoHostDest,
- uint64_t amoModType, uint64_t intrHostDest,
- uint64_t intrVector)
-{
- union dma_control rdma_control;
- union dma_amo_dest amo_dest;
- union intr_dest intr_dest;
- union dma_localaddr local_addr;
- union dma_hostaddr host_addr;
-
- rdma_control.dma_control_reg = 0;
- amo_dest.dma_amo_dest_reg = 0;
- intr_dest.intr_dest_reg = 0;
- local_addr.dma_localaddr_reg = 0;
- host_addr.dma_hostaddr_reg = 0;
-
- host_addr.dma_sys_addr = hostAddr;
- MBCS_MMR_SET(mmr, MBCS_RD_DMA_SYS_ADDR, host_addr.dma_hostaddr_reg);
-
- local_addr.dma_ram_addr = localAddr;
- local_addr.dma_ram_sel = localRamSel;
- MBCS_MMR_SET(mmr, MBCS_RD_DMA_LOC_ADDR, local_addr.dma_localaddr_reg);
-
- rdma_control.dma_op_length = numPkts;
- rdma_control.done_amo_en = amoEnable;
- rdma_control.done_int_en = intrEnable;
- rdma_control.pio_mem_n = peerIO;
- MBCS_MMR_SET(mmr, MBCS_RD_DMA_CTRL, rdma_control.dma_control_reg);
-
- amo_dest.dma_amo_sys_addr = amoHostDest;
- amo_dest.dma_amo_mod_type = amoModType;
- MBCS_MMR_SET(mmr, MBCS_RD_DMA_AMO_DEST, amo_dest.dma_amo_dest_reg);
-
- intr_dest.address = intrHostDest;
- intr_dest.int_vector = intrVector;
- MBCS_MMR_SET(mmr, MBCS_RD_DMA_INT_DEST, intr_dest.intr_dest_reg);
-
-}
-
-static inline void mbcs_putdma_set(void *mmr,
- uint64_t hostAddr,
- uint64_t localAddr,
- uint64_t localRamSel,
- uint64_t numPkts,
- uint64_t amoEnable,
- uint64_t intrEnable,
- uint64_t peerIO,
- uint64_t amoHostDest,
- uint64_t amoModType,
- uint64_t intrHostDest, uint64_t intrVector)
-{
- union dma_control wdma_control;
- union dma_amo_dest amo_dest;
- union intr_dest intr_dest;
- union dma_localaddr local_addr;
- union dma_hostaddr host_addr;
-
- wdma_control.dma_control_reg = 0;
- amo_dest.dma_amo_dest_reg = 0;
- intr_dest.intr_dest_reg = 0;
- local_addr.dma_localaddr_reg = 0;
- host_addr.dma_hostaddr_reg = 0;
-
- host_addr.dma_sys_addr = hostAddr;
- MBCS_MMR_SET(mmr, MBCS_WR_DMA_SYS_ADDR, host_addr.dma_hostaddr_reg);
-
- local_addr.dma_ram_addr = localAddr;
- local_addr.dma_ram_sel = localRamSel;
- MBCS_MMR_SET(mmr, MBCS_WR_DMA_LOC_ADDR, local_addr.dma_localaddr_reg);
-
- wdma_control.dma_op_length = numPkts;
- wdma_control.done_amo_en = amoEnable;
- wdma_control.done_int_en = intrEnable;
- wdma_control.pio_mem_n = peerIO;
- MBCS_MMR_SET(mmr, MBCS_WR_DMA_CTRL, wdma_control.dma_control_reg);
-
- amo_dest.dma_amo_sys_addr = amoHostDest;
- amo_dest.dma_amo_mod_type = amoModType;
- MBCS_MMR_SET(mmr, MBCS_WR_DMA_AMO_DEST, amo_dest.dma_amo_dest_reg);
-
- intr_dest.address = intrHostDest;
- intr_dest.int_vector = intrVector;
- MBCS_MMR_SET(mmr, MBCS_WR_DMA_INT_DEST, intr_dest.intr_dest_reg);
-
-}
-
-static inline void mbcs_algo_set(void *mmr,
- uint64_t amoHostDest,
- uint64_t amoModType,
- uint64_t intrHostDest,
- uint64_t intrVector, uint64_t algoStepCount)
-{
- union dma_amo_dest amo_dest;
- union intr_dest intr_dest;
- union algo_step step;
-
- step.algo_step_reg = 0;
- intr_dest.intr_dest_reg = 0;
- amo_dest.dma_amo_dest_reg = 0;
-
- amo_dest.dma_amo_sys_addr = amoHostDest;
- amo_dest.dma_amo_mod_type = amoModType;
- MBCS_MMR_SET(mmr, MBCS_ALG_AMO_DEST, amo_dest.dma_amo_dest_reg);
-
- intr_dest.address = intrHostDest;
- intr_dest.int_vector = intrVector;
- MBCS_MMR_SET(mmr, MBCS_ALG_INT_DEST, intr_dest.intr_dest_reg);
-
- step.alg_step_cnt = algoStepCount;
- MBCS_MMR_SET(mmr, MBCS_ALG_STEP, step.algo_step_reg);
-}
-
-static inline int mbcs_getdma_start(struct mbcs_soft *soft)
-{
- void *mmr_base;
- struct getdma *gdma;
- uint64_t numPkts;
- union cm_control cm_control;
-
- mmr_base = soft->mmr_base;
- gdma = &soft->getdma;
-
- /* check that host address got setup */
- if (!gdma->hostAddr)
- return -1;
-
- numPkts =
- (gdma->bytes + (MBCS_CACHELINE_SIZE - 1)) / MBCS_CACHELINE_SIZE;
-
- /* program engine */
- mbcs_getdma_set(mmr_base, tiocx_dma_addr(gdma->hostAddr),
- gdma->localAddr,
- (gdma->localAddr < MB2) ? 0 :
- (gdma->localAddr < MB4) ? 1 :
- (gdma->localAddr < MB6) ? 2 : 3,
- numPkts,
- gdma->DoneAmoEnable,
- gdma->DoneIntEnable,
- gdma->peerIO,
- gdma->amoHostDest,
- gdma->amoModType,
- gdma->intrHostDest, gdma->intrVector);
-
- /* start engine */
- cm_control.cm_control_reg = MBCS_MMR_GET(mmr_base, MBCS_CM_CONTROL);
- cm_control.rd_dma_go = 1;
- MBCS_MMR_SET(mmr_base, MBCS_CM_CONTROL, cm_control.cm_control_reg);
-
- return 0;
-
-}
-
-static inline int mbcs_putdma_start(struct mbcs_soft *soft)
-{
- void *mmr_base;
- struct putdma *pdma;
- uint64_t numPkts;
- union cm_control cm_control;
-
- mmr_base = soft->mmr_base;
- pdma = &soft->putdma;
-
- /* check that host address got setup */
- if (!pdma->hostAddr)
- return -1;
-
- numPkts =
- (pdma->bytes + (MBCS_CACHELINE_SIZE - 1)) / MBCS_CACHELINE_SIZE;
-
- /* program engine */
- mbcs_putdma_set(mmr_base, tiocx_dma_addr(pdma->hostAddr),
- pdma->localAddr,
- (pdma->localAddr < MB2) ? 0 :
- (pdma->localAddr < MB4) ? 1 :
- (pdma->localAddr < MB6) ? 2 : 3,
- numPkts,
- pdma->DoneAmoEnable,
- pdma->DoneIntEnable,
- pdma->peerIO,
- pdma->amoHostDest,
- pdma->amoModType,
- pdma->intrHostDest, pdma->intrVector);
-
- /* start engine */
- cm_control.cm_control_reg = MBCS_MMR_GET(mmr_base, MBCS_CM_CONTROL);
- cm_control.wr_dma_go = 1;
- MBCS_MMR_SET(mmr_base, MBCS_CM_CONTROL, cm_control.cm_control_reg);
-
- return 0;
-
-}
-
-static inline int mbcs_algo_start(struct mbcs_soft *soft)
-{
- struct algoblock *algo_soft = &soft->algo;
- void *mmr_base = soft->mmr_base;
- union cm_control cm_control;
-
- if (mutex_lock_interruptible(&soft->algolock))
- return -ERESTARTSYS;
-
- atomic_set(&soft->algo_done, 0);
-
- mbcs_algo_set(mmr_base,
- algo_soft->amoHostDest,
- algo_soft->amoModType,
- algo_soft->intrHostDest,
- algo_soft->intrVector, algo_soft->algoStepCount);
-
- /* start algorithm */
- cm_control.cm_control_reg = MBCS_MMR_GET(mmr_base, MBCS_CM_CONTROL);
- cm_control.alg_done_int_en = 1;
- cm_control.alg_go = 1;
- MBCS_MMR_SET(mmr_base, MBCS_CM_CONTROL, cm_control.cm_control_reg);
-
- mutex_unlock(&soft->algolock);
-
- return 0;
-}
-
-static inline ssize_t
-do_mbcs_sram_dmawrite(struct mbcs_soft *soft, uint64_t hostAddr,
- size_t len, loff_t * off)
-{
- int rv = 0;
-
- if (mutex_lock_interruptible(&soft->dmawritelock))
- return -ERESTARTSYS;
-
- atomic_set(&soft->dmawrite_done, 0);
-
- soft->putdma.hostAddr = hostAddr;
- soft->putdma.localAddr = *off;
- soft->putdma.bytes = len;
-
- if (mbcs_putdma_start(soft) < 0) {
- DBG(KERN_ALERT "do_mbcs_sram_dmawrite: "
- "mbcs_putdma_start failed\n");
- rv = -EAGAIN;
- goto dmawrite_exit;
- }
-
- if (wait_event_interruptible(soft->dmawrite_queue,
- atomic_read(&soft->dmawrite_done))) {
- rv = -ERESTARTSYS;
- goto dmawrite_exit;
- }
-
- rv = len;
- *off += len;
-
-dmawrite_exit:
- mutex_unlock(&soft->dmawritelock);
-
- return rv;
-}
-
-static inline ssize_t
-do_mbcs_sram_dmaread(struct mbcs_soft *soft, uint64_t hostAddr,
- size_t len, loff_t * off)
-{
- int rv = 0;
-
- if (mutex_lock_interruptible(&soft->dmareadlock))
- return -ERESTARTSYS;
-
- atomic_set(&soft->dmawrite_done, 0);
-
- soft->getdma.hostAddr = hostAddr;
- soft->getdma.localAddr = *off;
- soft->getdma.bytes = len;
-
- if (mbcs_getdma_start(soft) < 0) {
- DBG(KERN_ALERT "mbcs_strategy: mbcs_getdma_start failed\n");
- rv = -EAGAIN;
- goto dmaread_exit;
- }
-
- if (wait_event_interruptible(soft->dmaread_queue,
- atomic_read(&soft->dmaread_done))) {
- rv = -ERESTARTSYS;
- goto dmaread_exit;
- }
-
- rv = len;
- *off += len;
-
-dmaread_exit:
- mutex_unlock(&soft->dmareadlock);
-
- return rv;
-}
-
-static int mbcs_open(struct inode *ip, struct file *fp)
-{
- struct mbcs_soft *soft;
- int minor;
-
- mutex_lock(&mbcs_mutex);
- minor = iminor(ip);
-
- /* Nothing protects access to this list... */
- list_for_each_entry(soft, &soft_list, list) {
- if (soft->nasid == minor) {
- fp->private_data = soft->cxdev;
- mutex_unlock(&mbcs_mutex);
- return 0;
- }
- }
-
- mutex_unlock(&mbcs_mutex);
- return -ENODEV;
-}
-
-static ssize_t mbcs_sram_read(struct file * fp, char __user *buf, size_t len, loff_t * off)
-{
- struct cx_dev *cx_dev = fp->private_data;
- struct mbcs_soft *soft = cx_dev->soft;
- uint64_t hostAddr;
- int rv = 0;
-
- hostAddr = __get_dma_pages(GFP_KERNEL, get_order(len));
- if (hostAddr == 0)
- return -ENOMEM;
-
- rv = do_mbcs_sram_dmawrite(soft, hostAddr, len, off);
- if (rv < 0)
- goto exit;
-
- if (copy_to_user(buf, (void *)hostAddr, len))
- rv = -EFAULT;
-
- exit:
- free_pages(hostAddr, get_order(len));
-
- return rv;
-}
-
-static ssize_t
-mbcs_sram_write(struct file * fp, const char __user *buf, size_t len, loff_t * off)
-{
- struct cx_dev *cx_dev = fp->private_data;
- struct mbcs_soft *soft = cx_dev->soft;
- uint64_t hostAddr;
- int rv = 0;
-
- hostAddr = __get_dma_pages(GFP_KERNEL, get_order(len));
- if (hostAddr == 0)
- return -ENOMEM;
-
- if (copy_from_user((void *)hostAddr, buf, len)) {
- rv = -EFAULT;
- goto exit;
- }
-
- rv = do_mbcs_sram_dmaread(soft, hostAddr, len, off);
-
- exit:
- free_pages(hostAddr, get_order(len));
-
- return rv;
-}
-
-static loff_t mbcs_sram_llseek(struct file * filp, loff_t off, int whence)
-{
- return generic_file_llseek_size(filp, off, whence, MAX_LFS_FILESIZE,
- MBCS_SRAM_SIZE);
-}
-
-static uint64_t mbcs_pioaddr(struct mbcs_soft *soft, uint64_t offset)
-{
- uint64_t mmr_base;
-
- mmr_base = (uint64_t) (soft->mmr_base + offset);
-
- return mmr_base;
-}
-
-static void mbcs_debug_pioaddr_set(struct mbcs_soft *soft)
-{
- soft->debug_addr = mbcs_pioaddr(soft, MBCS_DEBUG_START);
-}
-
-static void mbcs_gscr_pioaddr_set(struct mbcs_soft *soft)
-{
- soft->gscr_addr = mbcs_pioaddr(soft, MBCS_GSCR_START);
-}
-
-static int mbcs_gscr_mmap(struct file *fp, struct vm_area_struct *vma)
-{
- struct cx_dev *cx_dev = fp->private_data;
- struct mbcs_soft *soft = cx_dev->soft;
-
- if (vma->vm_pgoff != 0)
- return -EINVAL;
-
- vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
-
- /* Remap-pfn-range will mark the range VM_IO */
- if (remap_pfn_range(vma,
- vma->vm_start,
- __pa(soft->gscr_addr) >> PAGE_SHIFT,
- PAGE_SIZE,
- vma->vm_page_prot))
- return -EAGAIN;
-
- return 0;
-}
-
-/**
- * mbcs_completion_intr_handler - Primary completion handler.
- * @irq: irq
- * @arg: soft struct for device
- *
- */
-static irqreturn_t
-mbcs_completion_intr_handler(int irq, void *arg)
-{
- struct mbcs_soft *soft = (struct mbcs_soft *)arg;
- void *mmr_base;
- union cm_status cm_status;
- union cm_control cm_control;
-
- mmr_base = soft->mmr_base;
- cm_status.cm_status_reg = MBCS_MMR_GET(mmr_base, MBCS_CM_STATUS);
-
- if (cm_status.rd_dma_done) {
- /* stop dma-read engine, clear status */
- cm_control.cm_control_reg =
- MBCS_MMR_GET(mmr_base, MBCS_CM_CONTROL);
- cm_control.rd_dma_clr = 1;
- MBCS_MMR_SET(mmr_base, MBCS_CM_CONTROL,
- cm_control.cm_control_reg);
- atomic_set(&soft->dmaread_done, 1);
- wake_up(&soft->dmaread_queue);
- }
- if (cm_status.wr_dma_done) {
- /* stop dma-write engine, clear status */
- cm_control.cm_control_reg =
- MBCS_MMR_GET(mmr_base, MBCS_CM_CONTROL);
- cm_control.wr_dma_clr = 1;
- MBCS_MMR_SET(mmr_base, MBCS_CM_CONTROL,
- cm_control.cm_control_reg);
- atomic_set(&soft->dmawrite_done, 1);
- wake_up(&soft->dmawrite_queue);
- }
- if (cm_status.alg_done) {
- /* clear status */
- cm_control.cm_control_reg =
- MBCS_MMR_GET(mmr_base, MBCS_CM_CONTROL);
- cm_control.alg_done_clr = 1;
- MBCS_MMR_SET(mmr_base, MBCS_CM_CONTROL,
- cm_control.cm_control_reg);
- atomic_set(&soft->algo_done, 1);
- wake_up(&soft->algo_queue);
- }
-
- return IRQ_HANDLED;
-}
-
-/**
- * mbcs_intr_alloc - Allocate interrupts.
- * @dev: device pointer
- *
- */
-static int mbcs_intr_alloc(struct cx_dev *dev)
-{
- struct sn_irq_info *sn_irq;
- struct mbcs_soft *soft;
- struct getdma *getdma;
- struct putdma *putdma;
- struct algoblock *algo;
-
- soft = dev->soft;
- getdma = &soft->getdma;
- putdma = &soft->putdma;
- algo = &soft->algo;
-
- soft->get_sn_irq = NULL;
- soft->put_sn_irq = NULL;
- soft->algo_sn_irq = NULL;
-
- sn_irq = tiocx_irq_alloc(dev->cx_id.nasid, TIOCX_CORELET, -1, -1, -1);
- if (sn_irq == NULL)
- return -EAGAIN;
- soft->get_sn_irq = sn_irq;
- getdma->intrHostDest = sn_irq->irq_xtalkaddr;
- getdma->intrVector = sn_irq->irq_irq;
- if (request_irq(sn_irq->irq_irq,
- (void *)mbcs_completion_intr_handler, IRQF_SHARED,
- "MBCS get intr", (void *)soft)) {
- tiocx_irq_free(soft->get_sn_irq);
- return -EAGAIN;
- }
-
- sn_irq = tiocx_irq_alloc(dev->cx_id.nasid, TIOCX_CORELET, -1, -1, -1);
- if (sn_irq == NULL) {
- free_irq(soft->get_sn_irq->irq_irq, soft);
- tiocx_irq_free(soft->get_sn_irq);
- return -EAGAIN;
- }
- soft->put_sn_irq = sn_irq;
- putdma->intrHostDest = sn_irq->irq_xtalkaddr;
- putdma->intrVector = sn_irq->irq_irq;
- if (request_irq(sn_irq->irq_irq,
- (void *)mbcs_completion_intr_handler, IRQF_SHARED,
- "MBCS put intr", (void *)soft)) {
- tiocx_irq_free(soft->put_sn_irq);
- free_irq(soft->get_sn_irq->irq_irq, soft);
- tiocx_irq_free(soft->get_sn_irq);
- return -EAGAIN;
- }
-
- sn_irq = tiocx_irq_alloc(dev->cx_id.nasid, TIOCX_CORELET, -1, -1, -1);
- if (sn_irq == NULL) {
- free_irq(soft->put_sn_irq->irq_irq, soft);
- tiocx_irq_free(soft->put_sn_irq);
- free_irq(soft->get_sn_irq->irq_irq, soft);
- tiocx_irq_free(soft->get_sn_irq);
- return -EAGAIN;
- }
- soft->algo_sn_irq = sn_irq;
- algo->intrHostDest = sn_irq->irq_xtalkaddr;
- algo->intrVector = sn_irq->irq_irq;
- if (request_irq(sn_irq->irq_irq,
- (void *)mbcs_completion_intr_handler, IRQF_SHARED,
- "MBCS algo intr", (void *)soft)) {
- tiocx_irq_free(soft->algo_sn_irq);
- free_irq(soft->put_sn_irq->irq_irq, soft);
- tiocx_irq_free(soft->put_sn_irq);
- free_irq(soft->get_sn_irq->irq_irq, soft);
- tiocx_irq_free(soft->get_sn_irq);
- return -EAGAIN;
- }
-
- return 0;
-}
-
-/**
- * mbcs_intr_dealloc - Remove interrupts.
- * @dev: device pointer
- *
- */
-static void mbcs_intr_dealloc(struct cx_dev *dev)
-{
- struct mbcs_soft *soft;
-
- soft = dev->soft;
-
- free_irq(soft->get_sn_irq->irq_irq, soft);
- tiocx_irq_free(soft->get_sn_irq);
- free_irq(soft->put_sn_irq->irq_irq, soft);
- tiocx_irq_free(soft->put_sn_irq);
- free_irq(soft->algo_sn_irq->irq_irq, soft);
- tiocx_irq_free(soft->algo_sn_irq);
-}
-
-static inline int mbcs_hw_init(struct mbcs_soft *soft)
-{
- void *mmr_base = soft->mmr_base;
- union cm_control cm_control;
- union cm_req_timeout cm_req_timeout;
- uint64_t err_stat;
-
- cm_req_timeout.cm_req_timeout_reg =
- MBCS_MMR_GET(mmr_base, MBCS_CM_REQ_TOUT);
-
- cm_req_timeout.time_out = MBCS_CM_CONTROL_REQ_TOUT_MASK;
- MBCS_MMR_SET(mmr_base, MBCS_CM_REQ_TOUT,
- cm_req_timeout.cm_req_timeout_reg);
-
- mbcs_gscr_pioaddr_set(soft);
- mbcs_debug_pioaddr_set(soft);
-
- /* clear errors */
- err_stat = MBCS_MMR_GET(mmr_base, MBCS_CM_ERR_STAT);
- MBCS_MMR_SET(mmr_base, MBCS_CM_CLR_ERR_STAT, err_stat);
- MBCS_MMR_ZERO(mmr_base, MBCS_CM_ERROR_DETAIL1);
-
- /* enable interrupts */
- /* turn off 2^23 (INT_EN_PIO_REQ_ADDR_INV) */
- MBCS_MMR_SET(mmr_base, MBCS_CM_ERR_INT_EN, 0x3ffffff7e00ffUL);
-
- /* arm status regs and clear engines */
- cm_control.cm_control_reg = MBCS_MMR_GET(mmr_base, MBCS_CM_CONTROL);
- cm_control.rearm_stat_regs = 1;
- cm_control.alg_clr = 1;
- cm_control.wr_dma_clr = 1;
- cm_control.rd_dma_clr = 1;
-
- MBCS_MMR_SET(mmr_base, MBCS_CM_CONTROL, cm_control.cm_control_reg);
-
- return 0;
-}
-
-static ssize_t show_algo(struct device *dev, struct device_attribute *attr, char *buf)
-{
- struct cx_dev *cx_dev = to_cx_dev(dev);
- struct mbcs_soft *soft = cx_dev->soft;
- uint64_t debug0;
-
- /*
- * By convention, the first debug register contains the
- * algorithm number and revision.
- */
- debug0 = *(uint64_t *) soft->debug_addr;
-
- return sprintf(buf, "0x%x 0x%x\n",
- upper_32_bits(debug0), lower_32_bits(debug0));
-}
-
-static ssize_t store_algo(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
-{
- int n;
- struct cx_dev *cx_dev = to_cx_dev(dev);
- struct mbcs_soft *soft = cx_dev->soft;
-
- if (count <= 0)
- return 0;
-
- n = simple_strtoul(buf, NULL, 0);
-
- if (n == 1) {
- mbcs_algo_start(soft);
- if (wait_event_interruptible(soft->algo_queue,
- atomic_read(&soft->algo_done)))
- return -ERESTARTSYS;
- }
-
- return count;
-}
-
-DEVICE_ATTR(algo, 0644, show_algo, store_algo);
-
-/**
- * mbcs_probe - Initialize for device
- * @dev: device pointer
- * @device_id: id table pointer
- *
- */
-static int mbcs_probe(struct cx_dev *dev, const struct cx_device_id *id)
-{
- struct mbcs_soft *soft;
-
- dev->soft = NULL;
-
- soft = kzalloc(sizeof(struct mbcs_soft), GFP_KERNEL);
- if (soft == NULL)
- return -ENOMEM;
-
- soft->nasid = dev->cx_id.nasid;
- list_add(&soft->list, &soft_list);
- soft->mmr_base = (void *)tiocx_swin_base(dev->cx_id.nasid);
- dev->soft = soft;
- soft->cxdev = dev;
-
- init_waitqueue_head(&soft->dmawrite_queue);
- init_waitqueue_head(&soft->dmaread_queue);
- init_waitqueue_head(&soft->algo_queue);
-
- mutex_init(&soft->dmawritelock);
- mutex_init(&soft->dmareadlock);
- mutex_init(&soft->algolock);
-
- mbcs_getdma_init(&soft->getdma);
- mbcs_putdma_init(&soft->putdma);
- mbcs_algo_init(&soft->algo);
-
- mbcs_hw_init(soft);
-
- /* Allocate interrupts */
- mbcs_intr_alloc(dev);
-
- device_create_file(&dev->dev, &dev_attr_algo);
-
- return 0;
-}
-
-static int mbcs_remove(struct cx_dev *dev)
-{
- if (dev->soft) {
- mbcs_intr_dealloc(dev);
- kfree(dev->soft);
- }
-
- device_remove_file(&dev->dev, &dev_attr_algo);
-
- return 0;
-}
-
-static const struct cx_device_id mbcs_id_table[] = {
- {
- .part_num = MBCS_PART_NUM,
- .mfg_num = MBCS_MFG_NUM,
- },
- {
- .part_num = MBCS_PART_NUM_ALG0,
- .mfg_num = MBCS_MFG_NUM,
- },
- {0, 0}
-};
-
-MODULE_DEVICE_TABLE(cx, mbcs_id_table);
-
-static struct cx_drv mbcs_driver = {
- .name = DEVICE_NAME,
- .id_table = mbcs_id_table,
- .probe = mbcs_probe,
- .remove = mbcs_remove,
-};
-
-static void __exit mbcs_exit(void)
-{
- unregister_chrdev(mbcs_major, DEVICE_NAME);
- cx_driver_unregister(&mbcs_driver);
-}
-
-static int __init mbcs_init(void)
-{
- int rv;
-
- if (!ia64_platform_is("sn2"))
- return -ENODEV;
-
- // Put driver into chrdevs[]. Get major number.
- rv = register_chrdev(mbcs_major, DEVICE_NAME, &mbcs_ops);
- if (rv < 0) {
- DBG(KERN_ALERT "mbcs_init: can't get major number. %d\n", rv);
- return rv;
- }
- mbcs_major = rv;
-
- return cx_driver_register(&mbcs_driver);
-}
-
-module_init(mbcs_init);
-module_exit(mbcs_exit);
-
-MODULE_AUTHOR("Bruce Losure <blosure@sgi.com>");
-MODULE_DESCRIPTION("Driver for MOATB Core Services");
-MODULE_LICENSE("GPL");
diff --git a/drivers/char/mbcs.h b/drivers/char/mbcs.h
deleted file mode 100644
index 1a36884c48b5..000000000000
--- a/drivers/char/mbcs.h
+++ /dev/null
@@ -1,553 +0,0 @@
-/*
- * This file is subject to the terms and conditions of the GNU General Public
- * License. See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * Copyright (c) 2005 Silicon Graphics, Inc. All rights reserved.
- */
-
-#ifndef __MBCS_H__
-#define __MBCS_H__
-
-/*
- * General macros
- */
-#define MB (1024*1024)
-#define MB2 (2*MB)
-#define MB4 (4*MB)
-#define MB6 (6*MB)
-
-/*
- * Offsets and masks
- */
-#define MBCS_CM_ID 0x0000 /* Identification */
-#define MBCS_CM_STATUS 0x0008 /* Status */
-#define MBCS_CM_ERROR_DETAIL1 0x0010 /* Error Detail1 */
-#define MBCS_CM_ERROR_DETAIL2 0x0018 /* Error Detail2 */
-#define MBCS_CM_CONTROL 0x0020 /* Control */
-#define MBCS_CM_REQ_TOUT 0x0028 /* Request Time-out */
-#define MBCS_CM_ERR_INT_DEST 0x0038 /* Error Interrupt Destination */
-#define MBCS_CM_TARG_FL 0x0050 /* Target Flush */
-#define MBCS_CM_ERR_STAT 0x0060 /* Error Status */
-#define MBCS_CM_CLR_ERR_STAT 0x0068 /* Clear Error Status */
-#define MBCS_CM_ERR_INT_EN 0x0070 /* Error Interrupt Enable */
-#define MBCS_RD_DMA_SYS_ADDR 0x0100 /* Read DMA System Address */
-#define MBCS_RD_DMA_LOC_ADDR 0x0108 /* Read DMA Local Address */
-#define MBCS_RD_DMA_CTRL 0x0110 /* Read DMA Control */
-#define MBCS_RD_DMA_AMO_DEST 0x0118 /* Read DMA AMO Destination */
-#define MBCS_RD_DMA_INT_DEST 0x0120 /* Read DMA Interrupt Destination */
-#define MBCS_RD_DMA_AUX_STAT 0x0130 /* Read DMA Auxiliary Status */
-#define MBCS_WR_DMA_SYS_ADDR 0x0200 /* Write DMA System Address */
-#define MBCS_WR_DMA_LOC_ADDR 0x0208 /* Write DMA Local Address */
-#define MBCS_WR_DMA_CTRL 0x0210 /* Write DMA Control */
-#define MBCS_WR_DMA_AMO_DEST 0x0218 /* Write DMA AMO Destination */
-#define MBCS_WR_DMA_INT_DEST 0x0220 /* Write DMA Interrupt Destination */
-#define MBCS_WR_DMA_AUX_STAT 0x0230 /* Write DMA Auxiliary Status */
-#define MBCS_ALG_AMO_DEST 0x0300 /* Algorithm AMO Destination */
-#define MBCS_ALG_INT_DEST 0x0308 /* Algorithm Interrupt Destination */
-#define MBCS_ALG_OFFSETS 0x0310
-#define MBCS_ALG_STEP 0x0318 /* Algorithm Step */
-
-#define MBCS_GSCR_START 0x0000000
-#define MBCS_DEBUG_START 0x0100000
-#define MBCS_RAM0_START 0x0200000
-#define MBCS_RAM1_START 0x0400000
-#define MBCS_RAM2_START 0x0600000
-
-#define MBCS_CM_CONTROL_REQ_TOUT_MASK 0x0000000000ffffffUL
-//#define PIO_BASE_ADDR_BASE_OFFSET_MASK 0x00fffffffff00000UL
-
-#define MBCS_SRAM_SIZE (1024*1024)
-#define MBCS_CACHELINE_SIZE 128
-
-/*
- * MMR get's and put's
- */
-#define MBCS_MMR_ADDR(mmr_base, offset)((uint64_t *)(mmr_base + offset))
-#define MBCS_MMR_SET(mmr_base, offset, value) { \
- uint64_t *mbcs_mmr_set_u64p, readback; \
- mbcs_mmr_set_u64p = (uint64_t *)(mmr_base + offset); \
- *mbcs_mmr_set_u64p = value; \
- readback = *mbcs_mmr_set_u64p; \
-}
-#define MBCS_MMR_GET(mmr_base, offset) *(uint64_t *)(mmr_base + offset)
-#define MBCS_MMR_ZERO(mmr_base, offset) MBCS_MMR_SET(mmr_base, offset, 0)
-
-/*
- * MBCS mmr structures
- */
-union cm_id {
- uint64_t cm_id_reg;
- struct {
- uint64_t always_one:1, // 0
- mfg_id:11, // 11:1
- part_num:16, // 27:12
- bitstream_rev:8, // 35:28
- :28; // 63:36
- };
-};
-
-union cm_status {
- uint64_t cm_status_reg;
- struct {
- uint64_t pending_reads:8, // 7:0
- pending_writes:8, // 15:8
- ice_rsp_credits:8, // 23:16
- ice_req_credits:8, // 31:24
- cm_req_credits:8, // 39:32
- :1, // 40
- rd_dma_in_progress:1, // 41
- rd_dma_done:1, // 42
- :1, // 43
- wr_dma_in_progress:1, // 44
- wr_dma_done:1, // 45
- alg_waiting:1, // 46
- alg_pipe_running:1, // 47
- alg_done:1, // 48
- :3, // 51:49
- pending_int_reqs:8, // 59:52
- :3, // 62:60
- alg_half_speed_sel:1; // 63
- };
-};
-
-union cm_error_detail1 {
- uint64_t cm_error_detail1_reg;
- struct {
- uint64_t packet_type:4, // 3:0
- source_id:2, // 5:4
- data_size:2, // 7:6
- tnum:8, // 15:8
- byte_enable:8, // 23:16
- gfx_cred:8, // 31:24
- read_type:2, // 33:32
- pio_or_memory:1, // 34
- head_cw_error:1, // 35
- :12, // 47:36
- head_error_bit:1, // 48
- data_error_bit:1, // 49
- :13, // 62:50
- valid:1; // 63
- };
-};
-
-union cm_error_detail2 {
- uint64_t cm_error_detail2_reg;
- struct {
- uint64_t address:56, // 55:0
- :8; // 63:56
- };
-};
-
-union cm_control {
- uint64_t cm_control_reg;
- struct {
- uint64_t cm_id:2, // 1:0
- :2, // 3:2
- max_trans:5, // 8:4
- :3, // 11:9
- address_mode:1, // 12
- :7, // 19:13
- credit_limit:8, // 27:20
- :5, // 32:28
- rearm_stat_regs:1, // 33
- prescalar_byp:1, // 34
- force_gap_war:1, // 35
- rd_dma_go:1, // 36
- wr_dma_go:1, // 37
- alg_go:1, // 38
- rd_dma_clr:1, // 39
- wr_dma_clr:1, // 40
- alg_clr:1, // 41
- :2, // 43:42
- alg_wait_step:1, // 44
- alg_done_amo_en:1, // 45
- alg_done_int_en:1, // 46
- :1, // 47
- alg_sram0_locked:1, // 48
- alg_sram1_locked:1, // 49
- alg_sram2_locked:1, // 50
- alg_done_clr:1, // 51
- :12; // 63:52
- };
-};
-
-union cm_req_timeout {
- uint64_t cm_req_timeout_reg;
- struct {
- uint64_t time_out:24, // 23:0
- :40; // 63:24
- };
-};
-
-union intr_dest {
- uint64_t intr_dest_reg;
- struct {
- uint64_t address:56, // 55:0
- int_vector:8; // 63:56
- };
-};
-
-union cm_error_status {
- uint64_t cm_error_status_reg;
- struct {
- uint64_t ecc_sbe:1, // 0
- ecc_mbe:1, // 1
- unsupported_req:1, // 2
- unexpected_rsp:1, // 3
- bad_length:1, // 4
- bad_datavalid:1, // 5
- buffer_overflow:1, // 6
- request_timeout:1, // 7
- :8, // 15:8
- head_inv_data_size:1, // 16
- rsp_pactype_inv:1, // 17
- head_sb_err:1, // 18
- missing_head:1, // 19
- head_inv_rd_type:1, // 20
- head_cmd_err_bit:1, // 21
- req_addr_align_inv:1, // 22
- pio_req_addr_inv:1, // 23
- req_range_dsize_inv:1, // 24
- early_term:1, // 25
- early_tail:1, // 26
- missing_tail:1, // 27
- data_flit_sb_err:1, // 28
- cm2hcm_req_cred_of:1, // 29
- cm2hcm_rsp_cred_of:1, // 30
- rx_bad_didn:1, // 31
- rd_dma_err_rsp:1, // 32
- rd_dma_tnum_tout:1, // 33
- rd_dma_multi_tnum_tou:1, // 34
- wr_dma_err_rsp:1, // 35
- wr_dma_tnum_tout:1, // 36
- wr_dma_multi_tnum_tou:1, // 37
- alg_data_overflow:1, // 38
- alg_data_underflow:1, // 39
- ram0_access_conflict:1, // 40
- ram1_access_conflict:1, // 41
- ram2_access_conflict:1, // 42
- ram0_perr:1, // 43
- ram1_perr:1, // 44
- ram2_perr:1, // 45
- int_gen_rsp_err:1, // 46
- int_gen_tnum_tout:1, // 47
- rd_dma_prog_err:1, // 48
- wr_dma_prog_err:1, // 49
- :14; // 63:50
- };
-};
-
-union cm_clr_error_status {
- uint64_t cm_clr_error_status_reg;
- struct {
- uint64_t clr_ecc_sbe:1, // 0
- clr_ecc_mbe:1, // 1
- clr_unsupported_req:1, // 2
- clr_unexpected_rsp:1, // 3
- clr_bad_length:1, // 4
- clr_bad_datavalid:1, // 5
- clr_buffer_overflow:1, // 6
- clr_request_timeout:1, // 7
- :8, // 15:8
- clr_head_inv_data_siz:1, // 16
- clr_rsp_pactype_inv:1, // 17
- clr_head_sb_err:1, // 18
- clr_missing_head:1, // 19
- clr_head_inv_rd_type:1, // 20
- clr_head_cmd_err_bit:1, // 21
- clr_req_addr_align_in:1, // 22
- clr_pio_req_addr_inv:1, // 23
- clr_req_range_dsize_i:1, // 24
- clr_early_term:1, // 25
- clr_early_tail:1, // 26
- clr_missing_tail:1, // 27
- clr_data_flit_sb_err:1, // 28
- clr_cm2hcm_req_cred_o:1, // 29
- clr_cm2hcm_rsp_cred_o:1, // 30
- clr_rx_bad_didn:1, // 31
- clr_rd_dma_err_rsp:1, // 32
- clr_rd_dma_tnum_tout:1, // 33
- clr_rd_dma_multi_tnum:1, // 34
- clr_wr_dma_err_rsp:1, // 35
- clr_wr_dma_tnum_tout:1, // 36
- clr_wr_dma_multi_tnum:1, // 37
- clr_alg_data_overflow:1, // 38
- clr_alg_data_underflo:1, // 39
- clr_ram0_access_confl:1, // 40
- clr_ram1_access_confl:1, // 41
- clr_ram2_access_confl:1, // 42
- clr_ram0_perr:1, // 43
- clr_ram1_perr:1, // 44
- clr_ram2_perr:1, // 45
- clr_int_gen_rsp_err:1, // 46
- clr_int_gen_tnum_tout:1, // 47
- clr_rd_dma_prog_err:1, // 48
- clr_wr_dma_prog_err:1, // 49
- :14; // 63:50
- };
-};
-
-union cm_error_intr_enable {
- uint64_t cm_error_intr_enable_reg;
- struct {
- uint64_t int_en_ecc_sbe:1, // 0
- int_en_ecc_mbe:1, // 1
- int_en_unsupported_re:1, // 2
- int_en_unexpected_rsp:1, // 3
- int_en_bad_length:1, // 4
- int_en_bad_datavalid:1, // 5
- int_en_buffer_overflo:1, // 6
- int_en_request_timeou:1, // 7
- :8, // 15:8
- int_en_head_inv_data_:1, // 16
- int_en_rsp_pactype_in:1, // 17
- int_en_head_sb_err:1, // 18
- int_en_missing_head:1, // 19
- int_en_head_inv_rd_ty:1, // 20
- int_en_head_cmd_err_b:1, // 21
- int_en_req_addr_align:1, // 22
- int_en_pio_req_addr_i:1, // 23
- int_en_req_range_dsiz:1, // 24
- int_en_early_term:1, // 25
- int_en_early_tail:1, // 26
- int_en_missing_tail:1, // 27
- int_en_data_flit_sb_e:1, // 28
- int_en_cm2hcm_req_cre:1, // 29
- int_en_cm2hcm_rsp_cre:1, // 30
- int_en_rx_bad_didn:1, // 31
- int_en_rd_dma_err_rsp:1, // 32
- int_en_rd_dma_tnum_to:1, // 33
- int_en_rd_dma_multi_t:1, // 34
- int_en_wr_dma_err_rsp:1, // 35
- int_en_wr_dma_tnum_to:1, // 36
- int_en_wr_dma_multi_t:1, // 37
- int_en_alg_data_overf:1, // 38
- int_en_alg_data_under:1, // 39
- int_en_ram0_access_co:1, // 40
- int_en_ram1_access_co:1, // 41
- int_en_ram2_access_co:1, // 42
- int_en_ram0_perr:1, // 43
- int_en_ram1_perr:1, // 44
- int_en_ram2_perr:1, // 45
- int_en_int_gen_rsp_er:1, // 46
- int_en_int_gen_tnum_t:1, // 47
- int_en_rd_dma_prog_er:1, // 48
- int_en_wr_dma_prog_er:1, // 49
- :14; // 63:50
- };
-};
-
-struct cm_mmr {
- union cm_id id;
- union cm_status status;
- union cm_error_detail1 err_detail1;
- union cm_error_detail2 err_detail2;
- union cm_control control;
- union cm_req_timeout req_timeout;
- uint64_t reserved1[1];
- union intr_dest int_dest;
- uint64_t reserved2[2];
- uint64_t targ_flush;
- uint64_t reserved3[1];
- union cm_error_status err_status;
- union cm_clr_error_status clr_err_status;
- union cm_error_intr_enable int_enable;
-};
-
-union dma_hostaddr {
- uint64_t dma_hostaddr_reg;
- struct {
- uint64_t dma_sys_addr:56, // 55:0
- :8; // 63:56
- };
-};
-
-union dma_localaddr {
- uint64_t dma_localaddr_reg;
- struct {
- uint64_t dma_ram_addr:21, // 20:0
- dma_ram_sel:2, // 22:21
- :41; // 63:23
- };
-};
-
-union dma_control {
- uint64_t dma_control_reg;
- struct {
- uint64_t dma_op_length:16, // 15:0
- :18, // 33:16
- done_amo_en:1, // 34
- done_int_en:1, // 35
- :1, // 36
- pio_mem_n:1, // 37
- :26; // 63:38
- };
-};
-
-union dma_amo_dest {
- uint64_t dma_amo_dest_reg;
- struct {
- uint64_t dma_amo_sys_addr:56, // 55:0
- dma_amo_mod_type:3, // 58:56
- :5; // 63:59
- };
-};
-
-union rdma_aux_status {
- uint64_t rdma_aux_status_reg;
- struct {
- uint64_t op_num_pacs_left:17, // 16:0
- :5, // 21:17
- lrsp_buff_empty:1, // 22
- :17, // 39:23
- pending_reqs_left:6, // 45:40
- :18; // 63:46
- };
-};
-
-struct rdma_mmr {
- union dma_hostaddr host_addr;
- union dma_localaddr local_addr;
- union dma_control control;
- union dma_amo_dest amo_dest;
- union intr_dest intr_dest;
- union rdma_aux_status aux_status;
-};
-
-union wdma_aux_status {
- uint64_t wdma_aux_status_reg;
- struct {
- uint64_t op_num_pacs_left:17, // 16:0
- :4, // 20:17
- lreq_buff_empty:1, // 21
- :18, // 39:22
- pending_reqs_left:6, // 45:40
- :18; // 63:46
- };
-};
-
-struct wdma_mmr {
- union dma_hostaddr host_addr;
- union dma_localaddr local_addr;
- union dma_control control;
- union dma_amo_dest amo_dest;
- union intr_dest intr_dest;
- union wdma_aux_status aux_status;
-};
-
-union algo_step {
- uint64_t algo_step_reg;
- struct {
- uint64_t alg_step_cnt:16, // 15:0
- :48; // 63:16
- };
-};
-
-struct algo_mmr {
- union dma_amo_dest amo_dest;
- union intr_dest intr_dest;
- union {
- uint64_t algo_offset_reg;
- struct {
- uint64_t sram0_offset:7, // 6:0
- reserved0:1, // 7
- sram1_offset:7, // 14:8
- reserved1:1, // 15
- sram2_offset:7, // 22:16
- reserved2:14; // 63:23
- };
- } sram_offset;
- union algo_step step;
-};
-
-struct mbcs_mmr {
- struct cm_mmr cm;
- uint64_t reserved1[17];
- struct rdma_mmr rdDma;
- uint64_t reserved2[25];
- struct wdma_mmr wrDma;
- uint64_t reserved3[25];
- struct algo_mmr algo;
- uint64_t reserved4[156];
-};
-
-/*
- * defines
- */
-#define DEVICE_NAME "mbcs"
-#define MBCS_PART_NUM 0xfff0
-#define MBCS_PART_NUM_ALG0 0xf001
-#define MBCS_MFG_NUM 0x1
-
-struct algoblock {
- uint64_t amoHostDest;
- uint64_t amoModType;
- uint64_t intrHostDest;
- uint64_t intrVector;
- uint64_t algoStepCount;
-};
-
-struct getdma {
- uint64_t hostAddr;
- uint64_t localAddr;
- uint64_t bytes;
- uint64_t DoneAmoEnable;
- uint64_t DoneIntEnable;
- uint64_t peerIO;
- uint64_t amoHostDest;
- uint64_t amoModType;
- uint64_t intrHostDest;
- uint64_t intrVector;
-};
-
-struct putdma {
- uint64_t hostAddr;
- uint64_t localAddr;
- uint64_t bytes;
- uint64_t DoneAmoEnable;
- uint64_t DoneIntEnable;
- uint64_t peerIO;
- uint64_t amoHostDest;
- uint64_t amoModType;
- uint64_t intrHostDest;
- uint64_t intrVector;
-};
-
-struct mbcs_soft {
- struct list_head list;
- struct cx_dev *cxdev;
- int major;
- int nasid;
- void *mmr_base;
- wait_queue_head_t dmawrite_queue;
- wait_queue_head_t dmaread_queue;
- wait_queue_head_t algo_queue;
- struct sn_irq_info *get_sn_irq;
- struct sn_irq_info *put_sn_irq;
- struct sn_irq_info *algo_sn_irq;
- struct getdma getdma;
- struct putdma putdma;
- struct algoblock algo;
- uint64_t gscr_addr; // pio addr
- uint64_t ram0_addr; // pio addr
- uint64_t ram1_addr; // pio addr
- uint64_t ram2_addr; // pio addr
- uint64_t debug_addr; // pio addr
- atomic_t dmawrite_done;
- atomic_t dmaread_done;
- atomic_t algo_done;
- struct mutex dmawritelock;
- struct mutex dmareadlock;
- struct mutex algolock;
-};
-
-static int mbcs_open(struct inode *ip, struct file *fp);
-static ssize_t mbcs_sram_read(struct file *fp, char __user *buf, size_t len,
- loff_t * off);
-static ssize_t mbcs_sram_write(struct file *fp, const char __user *buf, size_t len,
- loff_t * off);
-static loff_t mbcs_sram_llseek(struct file *filp, loff_t off, int whence);
-static int mbcs_gscr_mmap(struct file *fp, struct vm_area_struct *vma);
-
-#endif // __MBCS_H__
diff --git a/drivers/char/mspec.c b/drivers/char/mspec.c
index e75c9df7c2d8..a9d9f074fbd6 100644
--- a/drivers/char/mspec.c
+++ b/drivers/char/mspec.c
@@ -9,11 +9,8 @@
*
* This driver exports the SN special memory (mspec) facility to user
* processes.
- * There are three types of memory made available thru this driver:
- * fetchops, uncached and cached.
- *
- * Fetchops are atomic memory operations that are implemented in the
- * memory controller on SGI SN hardware.
+ * There are two types of memory made available thru this driver:
+ * uncached and cached.
*
* Uncached are used for memory write combining feature of the ia64
* cpu.
@@ -46,16 +43,8 @@
#include <linux/atomic.h>
#include <asm/tlbflush.h>
#include <asm/uncached.h>
-#include <asm/sn/addrs.h>
-#include <asm/sn/arch.h>
-#include <asm/sn/mspec.h>
-#include <asm/sn/sn_cpuid.h>
-#include <asm/sn/io.h>
-#include <asm/sn/bte.h>
-#include <asm/sn/shubio.h>
-#define FETCHOP_ID "SGI Fetchop,"
#define CACHED_ID "Cached,"
#define UNCACHED_ID "Uncached"
#define REVISION "4.0"
@@ -65,17 +54,10 @@
* Page types allocated by the device.
*/
enum mspec_page_type {
- MSPEC_FETCHOP = 1,
- MSPEC_CACHED,
+ MSPEC_CACHED = 2,
MSPEC_UNCACHED
};
-#ifdef CONFIG_SGI_SN
-static int is_sn2;
-#else
-#define is_sn2 0
-#endif
-
/*
* One of these structures is allocated when an mspec region is mmaped. The
* structure is pointed to by the vma->vm_private_data field in the vma struct.
@@ -96,39 +78,6 @@ struct vma_data {
unsigned long maddr[0]; /* Array of MSPEC addresses. */
};
-/* used on shub2 to clear FOP cache in the HUB */
-static unsigned long scratch_page[MAX_NUMNODES];
-#define SH2_AMO_CACHE_ENTRIES 4
-
-static inline int
-mspec_zero_block(unsigned long addr, int len)
-{
- int status;
-
- if (is_sn2) {
- if (is_shub2()) {
- int nid;
- void *p;
- int i;
-
- nid = nasid_to_cnodeid(get_node_number(__pa(addr)));
- p = (void *)TO_AMO(scratch_page[nid]);
-
- for (i=0; i < SH2_AMO_CACHE_ENTRIES; i++) {
- FETCHOP_LOAD_OP(p, FETCHOP_LOAD);
- p += FETCHOP_VAR_SIZE;
- }
- }
-
- status = bte_copy(0, addr & ~__IA64_UNCACHED_OFFSET, len,
- BTE_WACQUIRE | BTE_ZERO_FILL, NULL);
- } else {
- memset((char *) addr, 0, len);
- status = 0;
- }
- return status;
-}
-
/*
* mspec_open
*
@@ -173,11 +122,8 @@ mspec_close(struct vm_area_struct *vma)
*/
my_page = vdata->maddr[index];
vdata->maddr[index] = 0;
- if (!mspec_zero_block(my_page, PAGE_SIZE))
- uncached_free_page(my_page, 1);
- else
- printk(KERN_WARNING "mspec_close(): "
- "failed to zero page %ld\n", my_page);
+ memset((char *)my_page, 0, PAGE_SIZE);
+ uncached_free_page(my_page, 1);
}
kvfree(vdata);
@@ -213,11 +159,7 @@ mspec_fault(struct vm_fault *vmf)
spin_unlock(&vdata->lock);
}
- if (vdata->type == MSPEC_FETCHOP)
- paddr = TO_AMO(maddr);
- else
- paddr = maddr & ~__IA64_UNCACHED_OFFSET;
-
+ paddr = maddr & ~__IA64_UNCACHED_OFFSET;
pfn = paddr >> PAGE_SHIFT;
return vmf_insert_pfn(vmf->vma, vmf->address, pfn);
@@ -269,7 +211,7 @@ mspec_mmap(struct file *file, struct vm_area_struct *vma,
vma->vm_private_data = vdata;
vma->vm_flags |= VM_IO | VM_PFNMAP | VM_DONTEXPAND | VM_DONTDUMP;
- if (vdata->type == MSPEC_FETCHOP || vdata->type == MSPEC_UNCACHED)
+ if (vdata->type == MSPEC_UNCACHED)
vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
vma->vm_ops = &mspec_vm_ops;
@@ -277,12 +219,6 @@ mspec_mmap(struct file *file, struct vm_area_struct *vma,
}
static int
-fetchop_mmap(struct file *file, struct vm_area_struct *vma)
-{
- return mspec_mmap(file, vma, MSPEC_FETCHOP);
-}
-
-static int
cached_mmap(struct file *file, struct vm_area_struct *vma)
{
return mspec_mmap(file, vma, MSPEC_CACHED);
@@ -294,18 +230,6 @@ uncached_mmap(struct file *file, struct vm_area_struct *vma)
return mspec_mmap(file, vma, MSPEC_UNCACHED);
}
-static const struct file_operations fetchop_fops = {
- .owner = THIS_MODULE,
- .mmap = fetchop_mmap,
- .llseek = noop_llseek,
-};
-
-static struct miscdevice fetchop_miscdev = {
- .minor = MISC_DYNAMIC_MINOR,
- .name = "sgi_fetchop",
- .fops = &fetchop_fops
-};
-
static const struct file_operations cached_fops = {
.owner = THIS_MODULE,
.mmap = cached_mmap,
@@ -339,89 +263,32 @@ static int __init
mspec_init(void)
{
int ret;
- int nid;
-
- /*
- * The fetchop device only works on SN2 hardware, uncached and cached
- * memory drivers should both be valid on all ia64 hardware
- */
-#ifdef CONFIG_SGI_SN
- if (ia64_platform_is("sn2")) {
- is_sn2 = 1;
- if (is_shub2()) {
- ret = -ENOMEM;
- for_each_node_state(nid, N_ONLINE) {
- int actual_nid;
- int nasid;
- unsigned long phys;
-
- scratch_page[nid] = uncached_alloc_page(nid, 1);
- if (scratch_page[nid] == 0)
- goto free_scratch_pages;
- phys = __pa(scratch_page[nid]);
- nasid = get_node_number(phys);
- actual_nid = nasid_to_cnodeid(nasid);
- if (actual_nid != nid)
- goto free_scratch_pages;
- }
- }
- ret = misc_register(&fetchop_miscdev);
- if (ret) {
- printk(KERN_ERR
- "%s: failed to register device %i\n",
- FETCHOP_ID, ret);
- goto free_scratch_pages;
- }
- }
-#endif
ret = misc_register(&cached_miscdev);
if (ret) {
printk(KERN_ERR "%s: failed to register device %i\n",
CACHED_ID, ret);
- if (is_sn2)
- misc_deregister(&fetchop_miscdev);
- goto free_scratch_pages;
+ return ret;
}
ret = misc_register(&uncached_miscdev);
if (ret) {
printk(KERN_ERR "%s: failed to register device %i\n",
UNCACHED_ID, ret);
misc_deregister(&cached_miscdev);
- if (is_sn2)
- misc_deregister(&fetchop_miscdev);
- goto free_scratch_pages;
+ return ret;
}
- printk(KERN_INFO "%s %s initialized devices: %s %s %s\n",
- MSPEC_BASENAME, REVISION, is_sn2 ? FETCHOP_ID : "",
- CACHED_ID, UNCACHED_ID);
+ printk(KERN_INFO "%s %s initialized devices: %s %s\n",
+ MSPEC_BASENAME, REVISION, CACHED_ID, UNCACHED_ID);
return 0;
-
- free_scratch_pages:
- for_each_node(nid) {
- if (scratch_page[nid] != 0)
- uncached_free_page(scratch_page[nid], 1);
- }
- return ret;
}
static void __exit
mspec_exit(void)
{
- int nid;
-
misc_deregister(&uncached_miscdev);
misc_deregister(&cached_miscdev);
- if (is_sn2) {
- misc_deregister(&fetchop_miscdev);
-
- for_each_node(nid) {
- if (scratch_page[nid] != 0)
- uncached_free_page(scratch_page[nid], 1);
- }
- }
}
module_init(mspec_init);
diff --git a/drivers/char/snsc.c b/drivers/char/snsc.c
deleted file mode 100644
index 5918ea7499bb..000000000000
--- a/drivers/char/snsc.c
+++ /dev/null
@@ -1,469 +0,0 @@
-/*
- * SN Platform system controller communication support
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License. See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * Copyright (C) 2004, 2006 Silicon Graphics, Inc. All rights reserved.
- */
-
-/*
- * System controller communication driver
- *
- * This driver allows a user process to communicate with the system
- * controller (a.k.a. "IRouter") network in an SGI SN system.
- */
-
-#include <linux/interrupt.h>
-#include <linux/sched/signal.h>
-#include <linux/device.h>
-#include <linux/poll.h>
-#include <linux/init.h>
-#include <linux/slab.h>
-#include <linux/mutex.h>
-#include <asm/sn/io.h>
-#include <asm/sn/sn_sal.h>
-#include <asm/sn/module.h>
-#include <asm/sn/geo.h>
-#include <asm/sn/nodepda.h>
-#include "snsc.h"
-
-#define SYSCTL_BASENAME "snsc"
-
-#define SCDRV_BUFSZ 2048
-#define SCDRV_TIMEOUT 1000
-
-static DEFINE_MUTEX(scdrv_mutex);
-static irqreturn_t
-scdrv_interrupt(int irq, void *subch_data)
-{
- struct subch_data_s *sd = subch_data;
- unsigned long flags;
- int status;
-
- spin_lock_irqsave(&sd->sd_rlock, flags);
- spin_lock(&sd->sd_wlock);
- status = ia64_sn_irtr_intr(sd->sd_nasid, sd->sd_subch);
-
- if (status > 0) {
- if (status & SAL_IROUTER_INTR_RECV) {
- wake_up(&sd->sd_rq);
- }
- if (status & SAL_IROUTER_INTR_XMIT) {
- ia64_sn_irtr_intr_disable
- (sd->sd_nasid, sd->sd_subch,
- SAL_IROUTER_INTR_XMIT);
- wake_up(&sd->sd_wq);
- }
- }
- spin_unlock(&sd->sd_wlock);
- spin_unlock_irqrestore(&sd->sd_rlock, flags);
- return IRQ_HANDLED;
-}
-
-/*
- * scdrv_open
- *
- * Reserve a subchannel for system controller communication.
- */
-
-static int
-scdrv_open(struct inode *inode, struct file *file)
-{
- struct sysctl_data_s *scd;
- struct subch_data_s *sd;
- int rv;
-
- /* look up device info for this device file */
- scd = container_of(inode->i_cdev, struct sysctl_data_s, scd_cdev);
-
- /* allocate memory for subchannel data */
- sd = kzalloc(sizeof (struct subch_data_s), GFP_KERNEL);
- if (sd == NULL) {
- printk("%s: couldn't allocate subchannel data\n",
- __func__);
- return -ENOMEM;
- }
-
- /* initialize subch_data_s fields */
- sd->sd_nasid = scd->scd_nasid;
- sd->sd_subch = ia64_sn_irtr_open(scd->scd_nasid);
-
- if (sd->sd_subch < 0) {
- kfree(sd);
- printk("%s: couldn't allocate subchannel\n", __func__);
- return -EBUSY;
- }
-
- spin_lock_init(&sd->sd_rlock);
- spin_lock_init(&sd->sd_wlock);
- init_waitqueue_head(&sd->sd_rq);
- init_waitqueue_head(&sd->sd_wq);
- sema_init(&sd->sd_rbs, 1);
- sema_init(&sd->sd_wbs, 1);
-
- file->private_data = sd;
-
- /* hook this subchannel up to the system controller interrupt */
- mutex_lock(&scdrv_mutex);
- rv = request_irq(SGI_UART_VECTOR, scdrv_interrupt,
- IRQF_SHARED, SYSCTL_BASENAME, sd);
- if (rv) {
- ia64_sn_irtr_close(sd->sd_nasid, sd->sd_subch);
- kfree(sd);
- printk("%s: irq request failed (%d)\n", __func__, rv);
- mutex_unlock(&scdrv_mutex);
- return -EBUSY;
- }
- mutex_unlock(&scdrv_mutex);
- return 0;
-}
-
-/*
- * scdrv_release
- *
- * Release a previously-reserved subchannel.
- */
-
-static int
-scdrv_release(struct inode *inode, struct file *file)
-{
- struct subch_data_s *sd = (struct subch_data_s *) file->private_data;
- int rv;
-
- /* free the interrupt */
- free_irq(SGI_UART_VECTOR, sd);
-
- /* ask SAL to close the subchannel */
- rv = ia64_sn_irtr_close(sd->sd_nasid, sd->sd_subch);
-
- kfree(sd);
- return rv;
-}
-
-/*
- * scdrv_read
- *
- * Called to read bytes from the open IRouter pipe.
- *
- */
-
-static inline int
-read_status_check(struct subch_data_s *sd, int *len)
-{
- return ia64_sn_irtr_recv(sd->sd_nasid, sd->sd_subch, sd->sd_rb, len);
-}
-
-static ssize_t
-scdrv_read(struct file *file, char __user *buf, size_t count, loff_t *f_pos)
-{
- int status;
- int len;
- unsigned long flags;
- struct subch_data_s *sd = (struct subch_data_s *) file->private_data;
-
- /* try to get control of the read buffer */
- if (down_trylock(&sd->sd_rbs)) {
- /* somebody else has it now;
- * if we're non-blocking, then exit...
- */
- if (file->f_flags & O_NONBLOCK) {
- return -EAGAIN;
- }
- /* ...or if we want to block, then do so here */
- if (down_interruptible(&sd->sd_rbs)) {
- /* something went wrong with wait */
- return -ERESTARTSYS;
- }
- }
-
- /* anything to read? */
- len = CHUNKSIZE;
- spin_lock_irqsave(&sd->sd_rlock, flags);
- status = read_status_check(sd, &len);
-
- /* if not, and we're blocking I/O, loop */
- while (status < 0) {
- DECLARE_WAITQUEUE(wait, current);
-
- if (file->f_flags & O_NONBLOCK) {
- spin_unlock_irqrestore(&sd->sd_rlock, flags);
- up(&sd->sd_rbs);
- return -EAGAIN;
- }
-
- len = CHUNKSIZE;
- set_current_state(TASK_INTERRUPTIBLE);
- add_wait_queue(&sd->sd_rq, &wait);
- spin_unlock_irqrestore(&sd->sd_rlock, flags);
-
- schedule_timeout(msecs_to_jiffies(SCDRV_TIMEOUT));
-
- remove_wait_queue(&sd->sd_rq, &wait);
- if (signal_pending(current)) {
- /* wait was interrupted */
- up(&sd->sd_rbs);
- return -ERESTARTSYS;
- }
-
- spin_lock_irqsave(&sd->sd_rlock, flags);
- status = read_status_check(sd, &len);
- }
- spin_unlock_irqrestore(&sd->sd_rlock, flags);
-
- if (len > 0) {
- /* we read something in the last read_status_check(); copy
- * it out to user space
- */
- if (count < len) {
- pr_debug("%s: only accepting %d of %d bytes\n",
- __func__, (int) count, len);
- }
- len = min((int) count, len);
- if (copy_to_user(buf, sd->sd_rb, len))
- len = -EFAULT;
- }
-
- /* release the read buffer and wake anyone who might be
- * waiting for it
- */
- up(&sd->sd_rbs);
-
- /* return the number of characters read in */
- return len;
-}
-
-/*
- * scdrv_write
- *
- * Writes a chunk of an IRouter packet (or other system controller data)
- * to the system controller.
- *
- */
-static inline int
-write_status_check(struct subch_data_s *sd, int count)
-{
- return ia64_sn_irtr_send(sd->sd_nasid, sd->sd_subch, sd->sd_wb, count);
-}
-
-static ssize_t
-scdrv_write(struct file *file, const char __user *buf,
- size_t count, loff_t *f_pos)
-{
- unsigned long flags;
- int status;
- struct subch_data_s *sd = (struct subch_data_s *) file->private_data;
-
- /* try to get control of the write buffer */
- if (down_trylock(&sd->sd_wbs)) {
- /* somebody else has it now;
- * if we're non-blocking, then exit...
- */
- if (file->f_flags & O_NONBLOCK) {
- return -EAGAIN;
- }
- /* ...or if we want to block, then do so here */
- if (down_interruptible(&sd->sd_wbs)) {
- /* something went wrong with wait */
- return -ERESTARTSYS;
- }
- }
-
- count = min((int) count, CHUNKSIZE);
- if (copy_from_user(sd->sd_wb, buf, count)) {
- up(&sd->sd_wbs);
- return -EFAULT;
- }
-
- /* try to send the buffer */
- spin_lock_irqsave(&sd->sd_wlock, flags);
- status = write_status_check(sd, count);
-
- /* if we failed, and we want to block, then loop */
- while (status <= 0) {
- DECLARE_WAITQUEUE(wait, current);
-
- if (file->f_flags & O_NONBLOCK) {
- spin_unlock_irqrestore(&sd->sd_wlock, flags);
- up(&sd->sd_wbs);
- return -EAGAIN;
- }
-
- set_current_state(TASK_INTERRUPTIBLE);
- add_wait_queue(&sd->sd_wq, &wait);
- spin_unlock_irqrestore(&sd->sd_wlock, flags);
-
- schedule_timeout(msecs_to_jiffies(SCDRV_TIMEOUT));
-
- remove_wait_queue(&sd->sd_wq, &wait);
- if (signal_pending(current)) {
- /* wait was interrupted */
- up(&sd->sd_wbs);
- return -ERESTARTSYS;
- }
-
- spin_lock_irqsave(&sd->sd_wlock, flags);
- status = write_status_check(sd, count);
- }
- spin_unlock_irqrestore(&sd->sd_wlock, flags);
-
- /* release the write buffer and wake anyone who's waiting for it */
- up(&sd->sd_wbs);
-
- /* return the number of characters accepted (should be the complete
- * "chunk" as requested)
- */
- if ((status >= 0) && (status < count)) {
- pr_debug("Didn't accept the full chunk; %d of %d\n",
- status, (int) count);
- }
- return status;
-}
-
-static __poll_t
-scdrv_poll(struct file *file, struct poll_table_struct *wait)
-{
- __poll_t mask = 0;
- int status = 0;
- struct subch_data_s *sd = (struct subch_data_s *) file->private_data;
- unsigned long flags;
-
- poll_wait(file, &sd->sd_rq, wait);
- poll_wait(file, &sd->sd_wq, wait);
-
- spin_lock_irqsave(&sd->sd_rlock, flags);
- spin_lock(&sd->sd_wlock);
- status = ia64_sn_irtr_intr(sd->sd_nasid, sd->sd_subch);
- spin_unlock(&sd->sd_wlock);
- spin_unlock_irqrestore(&sd->sd_rlock, flags);
-
- if (status > 0) {
- if (status & SAL_IROUTER_INTR_RECV) {
- mask |= EPOLLIN | EPOLLRDNORM;
- }
- if (status & SAL_IROUTER_INTR_XMIT) {
- mask |= EPOLLOUT | EPOLLWRNORM;
- }
- }
-
- return mask;
-}
-
-static const struct file_operations scdrv_fops = {
- .owner = THIS_MODULE,
- .read = scdrv_read,
- .write = scdrv_write,
- .poll = scdrv_poll,
- .open = scdrv_open,
- .release = scdrv_release,
- .llseek = noop_llseek,
-};
-
-static struct class *snsc_class;
-
-/*
- * scdrv_init
- *
- * Called at boot time to initialize the system controller communication
- * facility.
- */
-int __init
-scdrv_init(void)
-{
- geoid_t geoid;
- cnodeid_t cnode;
- char devname[32];
- char *devnamep;
- struct sysctl_data_s *scd;
- void *salbuf;
- dev_t first_dev, dev;
- nasid_t event_nasid;
-
- if (!ia64_platform_is("sn2"))
- return -ENODEV;
-
- event_nasid = ia64_sn_get_console_nasid();
-
- snsc_class = class_create(THIS_MODULE, SYSCTL_BASENAME);
- if (IS_ERR(snsc_class)) {
- printk("%s: failed to allocate class\n", __func__);
- return PTR_ERR(snsc_class);
- }
-
- if (alloc_chrdev_region(&first_dev, 0, num_cnodes,
- SYSCTL_BASENAME) < 0) {
- printk("%s: failed to register SN system controller device\n",
- __func__);
- return -ENODEV;
- }
-
- for (cnode = 0; cnode < num_cnodes; cnode++) {
- geoid = cnodeid_get_geoid(cnode);
- devnamep = devname;
- format_module_id(devnamep, geo_module(geoid),
- MODULE_FORMAT_BRIEF);
- devnamep = devname + strlen(devname);
- sprintf(devnamep, "^%d#%d", geo_slot(geoid),
- geo_slab(geoid));
-
- /* allocate sysctl device data */
- scd = kzalloc(sizeof (struct sysctl_data_s),
- GFP_KERNEL);
- if (!scd) {
- printk("%s: failed to allocate device info"
- "for %s/%s\n", __func__,
- SYSCTL_BASENAME, devname);
- continue;
- }
-
- /* initialize sysctl device data fields */
- scd->scd_nasid = cnodeid_to_nasid(cnode);
- if (!(salbuf = kmalloc(SCDRV_BUFSZ, GFP_KERNEL))) {
- printk("%s: failed to allocate driver buffer"
- "(%s%s)\n", __func__,
- SYSCTL_BASENAME, devname);
- kfree(scd);
- continue;
- }
-
- if (ia64_sn_irtr_init(scd->scd_nasid, salbuf,
- SCDRV_BUFSZ) < 0) {
- printk
- ("%s: failed to initialize SAL for"
- " system controller communication"
- " (%s/%s): outdated PROM?\n",
- __func__, SYSCTL_BASENAME, devname);
- kfree(scd);
- kfree(salbuf);
- continue;
- }
-
- dev = first_dev + cnode;
- cdev_init(&scd->scd_cdev, &scdrv_fops);
- if (cdev_add(&scd->scd_cdev, dev, 1)) {
- printk("%s: failed to register system"
- " controller device (%s%s)\n",
- __func__, SYSCTL_BASENAME, devname);
- kfree(scd);
- kfree(salbuf);
- continue;
- }
-
- device_create(snsc_class, NULL, dev, NULL,
- "%s", devname);
-
- ia64_sn_irtr_intr_enable(scd->scd_nasid,
- 0 /*ignored */ ,
- SAL_IROUTER_INTR_RECV);
-
- /* on the console nasid, prepare to receive
- * system controller environmental events
- */
- if(scd->scd_nasid == event_nasid) {
- scdrv_event_init(scd);
- }
- }
- return 0;
-}
-device_initcall(scdrv_init);
diff --git a/drivers/char/snsc.h b/drivers/char/snsc.h
deleted file mode 100644
index e8c52c882b21..000000000000
--- a/drivers/char/snsc.h
+++ /dev/null
@@ -1,92 +0,0 @@
-/*
- * SN Platform system controller communication support
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License. See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * Copyright (C) 2004-2006 Silicon Graphics, Inc. All rights reserved.
- */
-
-/*
- * This file contains macros and data types for communication with the
- * system controllers in SGI SN systems.
- */
-
-#ifndef _SN_SYSCTL_H_
-#define _SN_SYSCTL_H_
-
-#include <linux/types.h>
-#include <linux/spinlock.h>
-#include <linux/wait.h>
-#include <linux/fs.h>
-#include <linux/cdev.h>
-#include <linux/semaphore.h>
-#include <asm/sn/types.h>
-
-#define CHUNKSIZE 127
-
-/* This structure is used to track an open subchannel. */
-struct subch_data_s {
- nasid_t sd_nasid; /* node on which the subchannel was opened */
- int sd_subch; /* subchannel number */
- spinlock_t sd_rlock; /* monitor lock for rsv */
- spinlock_t sd_wlock; /* monitor lock for wsv */
- wait_queue_head_t sd_rq; /* wait queue for readers */
- wait_queue_head_t sd_wq; /* wait queue for writers */
- struct semaphore sd_rbs; /* semaphore for read buffer */
- struct semaphore sd_wbs; /* semaphore for write buffer */
-
- char sd_rb[CHUNKSIZE]; /* read buffer */
- char sd_wb[CHUNKSIZE]; /* write buffer */
-};
-
-struct sysctl_data_s {
- struct cdev scd_cdev; /* Character device info */
- nasid_t scd_nasid; /* Node on which subchannels are opened. */
-};
-
-
-/* argument types */
-#define IR_ARG_INT 0x00 /* 4-byte integer (big-endian) */
-#define IR_ARG_ASCII 0x01 /* null-terminated ASCII string */
-#define IR_ARG_UNKNOWN 0x80 /* unknown data type. The low
- * 7 bits will contain the data
- * length. */
-#define IR_ARG_UNKNOWN_LENGTH_MASK 0x7f
-
-
-/* system controller event codes */
-#define EV_CLASS_MASK 0xf000ul
-#define EV_SEVERITY_MASK 0x0f00ul
-#define EV_COMPONENT_MASK 0x00fful
-
-#define EV_CLASS_POWER 0x1000ul
-#define EV_CLASS_FAN 0x2000ul
-#define EV_CLASS_TEMP 0x3000ul
-#define EV_CLASS_ENV 0x4000ul
-#define EV_CLASS_TEST_FAULT 0x5000ul
-#define EV_CLASS_TEST_WARNING 0x6000ul
-#define EV_CLASS_PWRD_NOTIFY 0x8000ul
-
-/* ENV class codes */
-#define ENV_PWRDN_PEND 0x4101ul
-
-#define EV_SEVERITY_POWER_STABLE 0x0000ul
-#define EV_SEVERITY_POWER_LOW_WARNING 0x0100ul
-#define EV_SEVERITY_POWER_HIGH_WARNING 0x0200ul
-#define EV_SEVERITY_POWER_HIGH_FAULT 0x0300ul
-#define EV_SEVERITY_POWER_LOW_FAULT 0x0400ul
-
-#define EV_SEVERITY_FAN_STABLE 0x0000ul
-#define EV_SEVERITY_FAN_WARNING 0x0100ul
-#define EV_SEVERITY_FAN_FAULT 0x0200ul
-
-#define EV_SEVERITY_TEMP_STABLE 0x0000ul
-#define EV_SEVERITY_TEMP_ADVISORY 0x0100ul
-#define EV_SEVERITY_TEMP_CRITICAL 0x0200ul
-#define EV_SEVERITY_TEMP_FAULT 0x0300ul
-
-void scdrv_event_init(struct sysctl_data_s *);
-
-#endif /* _SN_SYSCTL_H_ */
diff --git a/drivers/char/snsc_event.c b/drivers/char/snsc_event.c
deleted file mode 100644
index e452673dff66..000000000000
--- a/drivers/char/snsc_event.c
+++ /dev/null
@@ -1,303 +0,0 @@
-/*
- * SN Platform system controller communication support
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License. See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * Copyright (C) 2004-2006 Silicon Graphics, Inc. All rights reserved.
- */
-
-/*
- * System controller event handler
- *
- * These routines deal with environmental events arriving from the
- * system controllers.
- */
-
-#include <linux/interrupt.h>
-#include <linux/sched/signal.h>
-#include <linux/slab.h>
-#include <asm/byteorder.h>
-#include <asm/sn/sn_sal.h>
-#include <asm/unaligned.h>
-#include "snsc.h"
-
-static struct subch_data_s *event_sd;
-
-void scdrv_event(unsigned long);
-DECLARE_TASKLET(sn_sysctl_event, scdrv_event, 0);
-
-/*
- * scdrv_event_interrupt
- *
- * Pull incoming environmental events off the physical link to the
- * system controller and put them in a temporary holding area in SAL.
- * Schedule scdrv_event() to move them along to their ultimate
- * destination.
- */
-static irqreturn_t
-scdrv_event_interrupt(int irq, void *subch_data)
-{
- struct subch_data_s *sd = subch_data;
- unsigned long flags;
- int status;
-
- spin_lock_irqsave(&sd->sd_rlock, flags);
- status = ia64_sn_irtr_intr(sd->sd_nasid, sd->sd_subch);
-
- if ((status > 0) && (status & SAL_IROUTER_INTR_RECV)) {
- tasklet_schedule(&sn_sysctl_event);
- }
- spin_unlock_irqrestore(&sd->sd_rlock, flags);
- return IRQ_HANDLED;
-}
-
-
-/*
- * scdrv_parse_event
- *
- * Break an event (as read from SAL) into useful pieces so we can decide
- * what to do with it.
- */
-static int
-scdrv_parse_event(char *event, int *src, int *code, int *esp_code, char *desc)
-{
- char *desc_end;
-
- /* record event source address */
- *src = get_unaligned_be32(event);
- event += 4; /* move on to event code */
-
- /* record the system controller's event code */
- *code = get_unaligned_be32(event);
- event += 4; /* move on to event arguments */
-
- /* how many arguments are in the packet? */
- if (*event++ != 2) {
- /* if not 2, give up */
- return -1;
- }
-
- /* parse out the ESP code */
- if (*event++ != IR_ARG_INT) {
- /* not an integer argument, so give up */
- return -1;
- }
- *esp_code = get_unaligned_be32(event);
- event += 4;
-
- /* parse out the event description */
- if (*event++ != IR_ARG_ASCII) {
- /* not an ASCII string, so give up */
- return -1;
- }
- event[CHUNKSIZE-1] = '\0'; /* ensure this string ends! */
- event += 2; /* skip leading CR/LF */
- desc_end = desc + sprintf(desc, "%s", event);
-
- /* strip trailing CR/LF (if any) */
- for (desc_end--;
- (desc_end != desc) && ((*desc_end == 0xd) || (*desc_end == 0xa));
- desc_end--) {
- *desc_end = '\0';
- }
-
- return 0;
-}
-
-
-/*
- * scdrv_event_severity
- *
- * Figure out how urgent a message we should write to the console/syslog
- * via printk.
- */
-static char *
-scdrv_event_severity(int code)
-{
- int ev_class = (code & EV_CLASS_MASK);
- int ev_severity = (code & EV_SEVERITY_MASK);
- char *pk_severity = KERN_NOTICE;
-
- switch (ev_class) {
- case EV_CLASS_POWER:
- switch (ev_severity) {
- case EV_SEVERITY_POWER_LOW_WARNING:
- case EV_SEVERITY_POWER_HIGH_WARNING:
- pk_severity = KERN_WARNING;
- break;
- case EV_SEVERITY_POWER_HIGH_FAULT:
- case EV_SEVERITY_POWER_LOW_FAULT:
- pk_severity = KERN_ALERT;
- break;
- }
- break;
- case EV_CLASS_FAN:
- switch (ev_severity) {
- case EV_SEVERITY_FAN_WARNING:
- pk_severity = KERN_WARNING;
- break;
- case EV_SEVERITY_FAN_FAULT:
- pk_severity = KERN_CRIT;
- break;
- }
- break;
- case EV_CLASS_TEMP:
- switch (ev_severity) {
- case EV_SEVERITY_TEMP_ADVISORY:
- pk_severity = KERN_WARNING;
- break;
- case EV_SEVERITY_TEMP_CRITICAL:
- pk_severity = KERN_CRIT;
- break;
- case EV_SEVERITY_TEMP_FAULT:
- pk_severity = KERN_ALERT;
- break;
- }
- break;
- case EV_CLASS_ENV:
- pk_severity = KERN_ALERT;
- break;
- case EV_CLASS_TEST_FAULT:
- pk_severity = KERN_ALERT;
- break;
- case EV_CLASS_TEST_WARNING:
- pk_severity = KERN_WARNING;
- break;
- case EV_CLASS_PWRD_NOTIFY:
- pk_severity = KERN_ALERT;
- break;
- }
-
- return pk_severity;
-}
-
-
-/*
- * scdrv_dispatch_event
- *
- * Do the right thing with an incoming event. That's often nothing
- * more than printing it to the system log. For power-down notifications
- * we start a graceful shutdown.
- */
-static void
-scdrv_dispatch_event(char *event, int len)
-{
- static int snsc_shutting_down = 0;
- int code, esp_code, src, class;
- char desc[CHUNKSIZE];
- char *severity;
-
- if (scdrv_parse_event(event, &src, &code, &esp_code, desc) < 0) {
- /* ignore uninterpretible event */
- return;
- }
-
- /* how urgent is the message? */
- severity = scdrv_event_severity(code);
-
- class = (code & EV_CLASS_MASK);
-
- if (class == EV_CLASS_PWRD_NOTIFY || code == ENV_PWRDN_PEND) {
- if (snsc_shutting_down)
- return;
-
- snsc_shutting_down = 1;
-
- /* give a message for each type of event */
- if (class == EV_CLASS_PWRD_NOTIFY)
- printk(KERN_NOTICE "Power off indication received."
- " Sending SIGPWR to init...\n");
- else if (code == ENV_PWRDN_PEND)
- printk(KERN_CRIT "WARNING: Shutting down the system"
- " due to a critical environmental condition."
- " Sending SIGPWR to init...\n");
-
- /* give a SIGPWR signal to init proc */
- kill_cad_pid(SIGPWR, 0);
- } else {
- /* print to system log */
- printk("%s|$(0x%x)%s\n", severity, esp_code, desc);
- }
-}
-
-
-/*
- * scdrv_event
- *
- * Called as a tasklet when an event arrives from the L1. Read the event
- * from where it's temporarily stored in SAL and call scdrv_dispatch_event()
- * to send it on its way. Keep trying to read events until SAL indicates
- * that there are no more immediately available.
- */
-void
-scdrv_event(unsigned long dummy)
-{
- int status;
- int len;
- unsigned long flags;
- struct subch_data_s *sd = event_sd;
-
- /* anything to read? */
- len = CHUNKSIZE;
- spin_lock_irqsave(&sd->sd_rlock, flags);
- status = ia64_sn_irtr_recv(sd->sd_nasid, sd->sd_subch,
- sd->sd_rb, &len);
-
- while (!(status < 0)) {
- spin_unlock_irqrestore(&sd->sd_rlock, flags);
- scdrv_dispatch_event(sd->sd_rb, len);
- len = CHUNKSIZE;
- spin_lock_irqsave(&sd->sd_rlock, flags);
- status = ia64_sn_irtr_recv(sd->sd_nasid, sd->sd_subch,
- sd->sd_rb, &len);
- }
- spin_unlock_irqrestore(&sd->sd_rlock, flags);
-}
-
-
-/*
- * scdrv_event_init
- *
- * Sets up a system controller subchannel to begin receiving event
- * messages. This is sort of a specialized version of scdrv_open()
- * in drivers/char/sn_sysctl.c.
- */
-void
-scdrv_event_init(struct sysctl_data_s *scd)
-{
- int rv;
-
- event_sd = kzalloc(sizeof (struct subch_data_s), GFP_KERNEL);
- if (event_sd == NULL) {
- printk(KERN_WARNING "%s: couldn't allocate subchannel info"
- " for event monitoring\n", __func__);
- return;
- }
-
- /* initialize subch_data_s fields */
- event_sd->sd_nasid = scd->scd_nasid;
- spin_lock_init(&event_sd->sd_rlock);
-
- /* ask the system controllers to send events to this node */
- event_sd->sd_subch = ia64_sn_sysctl_event_init(scd->scd_nasid);
-
- if (event_sd->sd_subch < 0) {
- kfree(event_sd);
- printk(KERN_WARNING "%s: couldn't open event subchannel\n",
- __func__);
- return;
- }
-
- /* hook event subchannel up to the system controller interrupt */
- rv = request_irq(SGI_UART_VECTOR, scdrv_event_interrupt,
- IRQF_SHARED, "system controller events", event_sd);
- if (rv) {
- printk(KERN_WARNING "%s: irq request failed (%d)\n",
- __func__, rv);
- ia64_sn_irtr_close(event_sd->sd_nasid, event_sd->sd_subch);
- kfree(event_sd);
- return;
- }
-}