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Message-Id: <20190813072514.23299-15-hch@lst.de>
Date: Tue, 13 Aug 2019 09:25:00 +0200
From: Christoph Hellwig <hch@....de>
To: Tony Luck <tony.luck@...el.com>, Fenghua Yu <fenghua.yu@...el.com>,
Mike Travis <mike.travis@....com>,
Dimitri Sivanich <sivanich@....com>
Cc: Arnd Bergmann <arnd@...db.de>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
linux-ia64@...r.kernel.org, linux-ide@...r.kernel.org,
linux-scsi@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 14/28] drivers: remove the SGI SN2 IOC4 base support
The IOC4 is a multi-function chip seen on SGI SN2 and some SGI MIPS
systems. This removes the base driver, which while not having an SN2
Kconfig dependency was only for sub-drivers that had one.
Signed-off-by: Christoph Hellwig <hch@....de>
---
Documentation/driver-api/sgi-ioc4.rst | 49 ---
arch/ia64/configs/generic_defconfig | 1 -
arch/ia64/configs/gensparse_defconfig | 1 -
arch/mips/configs/bigsur_defconfig | 1 -
arch/mips/configs/ip32_defconfig | 1 -
arch/mips/configs/markeins_defconfig | 1 -
arch/mips/configs/rm200_defconfig | 1 -
arch/mips/configs/sb1250_swarm_defconfig | 1 -
drivers/misc/Kconfig | 12 -
drivers/misc/Makefile | 1 -
drivers/misc/ioc4.c | 498 -----------------------
include/linux/ioc4.h | 184 ---------
include/linux/pci_ids.h | 1 -
13 files changed, 752 deletions(-)
delete mode 100644 Documentation/driver-api/sgi-ioc4.rst
delete mode 100644 drivers/misc/ioc4.c
delete mode 100644 include/linux/ioc4.h
diff --git a/Documentation/driver-api/sgi-ioc4.rst b/Documentation/driver-api/sgi-ioc4.rst
deleted file mode 100644
index 72709222d3c0..000000000000
--- a/Documentation/driver-api/sgi-ioc4.rst
+++ /dev/null
@@ -1,49 +0,0 @@
-====================================
-SGI IOC4 PCI (multi function) device
-====================================
-
-The SGI IOC4 PCI device is a bit of a strange beast, so some notes on
-it are in order.
-
-First, even though the IOC4 performs multiple functions, such as an
-IDE controller, a serial controller, a PS/2 keyboard/mouse controller,
-and an external interrupt mechanism, it's not implemented as a
-multifunction device. The consequence of this from a software
-standpoint is that all these functions share a single IRQ, and
-they can't all register to own the same PCI device ID. To make
-matters a bit worse, some of the register blocks (and even registers
-themselves) present in IOC4 are mixed-purpose between these several
-functions, meaning that there's no clear "owning" device driver.
-
-The solution is to organize the IOC4 driver into several independent
-drivers, "ioc4", "sgiioc4", and "ioc4_serial". Note that there is no
-PS/2 controller driver as this functionality has never been wired up
-on a shipping IO card.
-
-ioc4
-====
-This is the core (or shim) driver for IOC4. It is responsible for
-initializing the basic functionality of the chip, and allocating
-the PCI resources that are shared between the IOC4 functions.
-
-This driver also provides registration functions that the other
-IOC4 drivers can call to make their presence known. Each driver
-needs to provide a probe and remove function, which are invoked
-by the core driver at appropriate times. The interface of these
-IOC4 function probe and remove operations isn't precisely the same
-as PCI device probe and remove operations, but is logically the
-same operation.
-
-sgiioc4
-=======
-This is the IDE driver for IOC4. Its name isn't very descriptive
-simply for historical reasons (it used to be the only IOC4 driver
-component). There's not much to say about it other than it hooks
-up to the ioc4 driver via the appropriate registration, probe, and
-remove functions.
-
-ioc4_serial
-===========
-This is the serial driver for IOC4. There's not much to say about it
-other than it hooks up to the ioc4 driver via the appropriate registration,
-probe, and remove functions.
diff --git a/arch/ia64/configs/generic_defconfig b/arch/ia64/configs/generic_defconfig
index 8dd921dce4b5..661d90b3e148 100644
--- a/arch/ia64/configs/generic_defconfig
+++ b/arch/ia64/configs/generic_defconfig
@@ -44,7 +44,6 @@ CONFIG_BLK_DEV_LOOP=m
CONFIG_BLK_DEV_CRYPTOLOOP=m
CONFIG_BLK_DEV_NBD=m
CONFIG_BLK_DEV_RAM=y
-CONFIG_SGI_IOC4=y
CONFIG_SGI_XP=m
CONFIG_IDE=y
CONFIG_BLK_DEV_IDECD=y
diff --git a/arch/ia64/configs/gensparse_defconfig b/arch/ia64/configs/gensparse_defconfig
index 5d5ea744f7e6..7844e6a956a4 100644
--- a/arch/ia64/configs/gensparse_defconfig
+++ b/arch/ia64/configs/gensparse_defconfig
@@ -36,7 +36,6 @@ CONFIG_BLK_DEV_LOOP=m
CONFIG_BLK_DEV_CRYPTOLOOP=m
CONFIG_BLK_DEV_NBD=m
CONFIG_BLK_DEV_RAM=y
-CONFIG_SGI_IOC4=y
CONFIG_IDE=y
CONFIG_BLK_DEV_IDECD=y
CONFIG_IDE_GENERIC=y
diff --git a/arch/mips/configs/bigsur_defconfig b/arch/mips/configs/bigsur_defconfig
index 66566026409d..f14ad0538f4e 100644
--- a/arch/mips/configs/bigsur_defconfig
+++ b/arch/mips/configs/bigsur_defconfig
@@ -103,7 +103,6 @@ CONFIG_FW_LOADER=m
CONFIG_BLK_DEV_LOOP=m
CONFIG_BLK_DEV_CRYPTOLOOP=m
CONFIG_BLK_DEV_NBD=m
-CONFIG_SGI_IOC4=m
CONFIG_EEPROM_LEGACY=y
CONFIG_EEPROM_MAX6875=y
CONFIG_IDE=y
diff --git a/arch/mips/configs/ip32_defconfig b/arch/mips/configs/ip32_defconfig
index 572cab91670c..370884018aad 100644
--- a/arch/mips/configs/ip32_defconfig
+++ b/arch/mips/configs/ip32_defconfig
@@ -46,7 +46,6 @@ CONFIG_CONNECTOR=y
CONFIG_BLK_DEV_LOOP=m
CONFIG_BLK_DEV_CRYPTOLOOP=m
CONFIG_BLK_DEV_NBD=m
-CONFIG_SGI_IOC4=y
CONFIG_RAID_ATTRS=y
CONFIG_SCSI=y
CONFIG_BLK_DEV_SD=y
diff --git a/arch/mips/configs/markeins_defconfig b/arch/mips/configs/markeins_defconfig
index ae93a94f8c71..507ad91b21e7 100644
--- a/arch/mips/configs/markeins_defconfig
+++ b/arch/mips/configs/markeins_defconfig
@@ -117,7 +117,6 @@ CONFIG_MTD_CFI_AMDSTD=y
CONFIG_MTD_PHYSMAP=y
CONFIG_BLK_DEV_LOOP=m
CONFIG_BLK_DEV_CRYPTOLOOP=m
-CONFIG_SGI_IOC4=m
CONFIG_SCSI=m
# CONFIG_SCSI_PROC_FS is not set
CONFIG_BLK_DEV_SD=m
diff --git a/arch/mips/configs/rm200_defconfig b/arch/mips/configs/rm200_defconfig
index 0f4b09f8a0ee..8762e75f5d5f 100644
--- a/arch/mips/configs/rm200_defconfig
+++ b/arch/mips/configs/rm200_defconfig
@@ -198,7 +198,6 @@ CONFIG_BLK_DEV_SX8=m
CONFIG_BLK_DEV_RAM=m
CONFIG_CDROM_PKTCDVD=m
CONFIG_ATA_OVER_ETH=m
-CONFIG_SGI_IOC4=m
CONFIG_RAID_ATTRS=m
CONFIG_SCSI=y
CONFIG_BLK_DEV_SD=y
diff --git a/arch/mips/configs/sb1250_swarm_defconfig b/arch/mips/configs/sb1250_swarm_defconfig
index 6883ea4477d4..bb0b1b22ebe1 100644
--- a/arch/mips/configs/sb1250_swarm_defconfig
+++ b/arch/mips/configs/sb1250_swarm_defconfig
@@ -49,7 +49,6 @@ CONFIG_BLK_DEV_RAM=y
CONFIG_BLK_DEV_RAM_SIZE=9220
CONFIG_CDROM_PKTCDVD=m
CONFIG_ATA_OVER_ETH=m
-CONFIG_SGI_IOC4=m
CONFIG_IDE=y
CONFIG_BLK_DEV_IDECD=y
CONFIG_BLK_DEV_IDETAPE=y
diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig
index 299032693934..423d2d26d8f7 100644
--- a/drivers/misc/Kconfig
+++ b/drivers/misc/Kconfig
@@ -126,18 +126,6 @@ config INTEL_MID_PTI
an Intel Atom (non-netbook) mobile device containing a MIPI
P1149.7 standard implementation.
-config SGI_IOC4
- tristate "SGI IOC4 Base IO support"
- depends on PCI
- ---help---
- This option enables basic support for the IOC4 chip on certain
- SGI IO controller cards (IO9, IO10, and PCI-RT). This option
- does not enable any specific functions on such a card, but provides
- necessary infrastructure for other drivers to utilize.
-
- If you have an SGI Altix with an IOC4-based card say Y.
- Otherwise say N.
-
config TIFM_CORE
tristate "TI Flash Media interface support"
depends on PCI
diff --git a/drivers/misc/Makefile b/drivers/misc/Makefile
index abd8ae249746..8dae0a976200 100644
--- a/drivers/misc/Makefile
+++ b/drivers/misc/Makefile
@@ -21,7 +21,6 @@ obj-$(CONFIG_QCOM_COINCELL) += qcom-coincell.o
obj-$(CONFIG_QCOM_FASTRPC) += fastrpc.o
obj-$(CONFIG_SENSORS_BH1770) += bh1770glc.o
obj-$(CONFIG_SENSORS_APDS990X) += apds990x.o
-obj-$(CONFIG_SGI_IOC4) += ioc4.o
obj-$(CONFIG_ENCLOSURE_SERVICES) += enclosure.o
obj-$(CONFIG_KGDB_TESTS) += kgdbts.o
obj-$(CONFIG_SGI_XP) += sgi-xp/
diff --git a/drivers/misc/ioc4.c b/drivers/misc/ioc4.c
deleted file mode 100644
index 9d0445a567db..000000000000
--- a/drivers/misc/ioc4.c
+++ /dev/null
@@ -1,498 +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) 2005-2006 Silicon Graphics, Inc. All Rights Reserved.
- */
-
-/* This file contains the master driver module for use by SGI IOC4 subdrivers.
- *
- * It allocates any resources shared between multiple subdevices, and
- * provides accessor functions (where needed) and the like for those
- * resources. It also provides a mechanism for the subdevice modules
- * to support loading and unloading.
- *
- * Non-shared resources (e.g. external interrupt A_INT_OUT register page
- * alias, serial port and UART registers) are handled by the subdevice
- * modules themselves.
- *
- * This is all necessary because IOC4 is not implemented as a multi-function
- * PCI device, but an amalgamation of disparate registers for several
- * types of device (ATA, serial, external interrupts). The normal
- * resource management in the kernel doesn't have quite the right interfaces
- * to handle this situation (e.g. multiple modules can't claim the same
- * PCI ID), thus this IOC4 master module.
- */
-
-#include <linux/errno.h>
-#include <linux/module.h>
-#include <linux/pci.h>
-#include <linux/ioc4.h>
-#include <linux/ktime.h>
-#include <linux/slab.h>
-#include <linux/mutex.h>
-#include <linux/time.h>
-#include <asm/io.h>
-
-/***************
- * Definitions *
- ***************/
-
-/* Tweakable values */
-
-/* PCI bus speed detection/calibration */
-#define IOC4_CALIBRATE_COUNT 63 /* Calibration cycle period */
-#define IOC4_CALIBRATE_CYCLES 256 /* Average over this many cycles */
-#define IOC4_CALIBRATE_DISCARD 2 /* Discard first few cycles */
-#define IOC4_CALIBRATE_LOW_MHZ 25 /* Lower bound on bus speed sanity */
-#define IOC4_CALIBRATE_HIGH_MHZ 75 /* Upper bound on bus speed sanity */
-#define IOC4_CALIBRATE_DEFAULT_MHZ 66 /* Assumed if sanity check fails */
-
-/************************
- * Submodule management *
- ************************/
-
-static DEFINE_MUTEX(ioc4_mutex);
-
-static LIST_HEAD(ioc4_devices);
-static LIST_HEAD(ioc4_submodules);
-
-/* Register an IOC4 submodule */
-int
-ioc4_register_submodule(struct ioc4_submodule *is)
-{
- struct ioc4_driver_data *idd;
-
- mutex_lock(&ioc4_mutex);
- list_add(&is->is_list, &ioc4_submodules);
-
- /* Initialize submodule for each IOC4 */
- if (!is->is_probe)
- goto out;
-
- list_for_each_entry(idd, &ioc4_devices, idd_list) {
- if (is->is_probe(idd)) {
- printk(KERN_WARNING
- "%s: IOC4 submodule %s probe failed "
- "for pci_dev %s",
- __func__, module_name(is->is_owner),
- pci_name(idd->idd_pdev));
- }
- }
- out:
- mutex_unlock(&ioc4_mutex);
- return 0;
-}
-
-/* Unregister an IOC4 submodule */
-void
-ioc4_unregister_submodule(struct ioc4_submodule *is)
-{
- struct ioc4_driver_data *idd;
-
- mutex_lock(&ioc4_mutex);
- list_del(&is->is_list);
-
- /* Remove submodule for each IOC4 */
- if (!is->is_remove)
- goto out;
-
- list_for_each_entry(idd, &ioc4_devices, idd_list) {
- if (is->is_remove(idd)) {
- printk(KERN_WARNING
- "%s: IOC4 submodule %s remove failed "
- "for pci_dev %s.\n",
- __func__, module_name(is->is_owner),
- pci_name(idd->idd_pdev));
- }
- }
- out:
- mutex_unlock(&ioc4_mutex);
-}
-
-/*********************
- * Device management *
- *********************/
-
-#define IOC4_CALIBRATE_LOW_LIMIT \
- (1000*IOC4_EXTINT_COUNT_DIVISOR/IOC4_CALIBRATE_LOW_MHZ)
-#define IOC4_CALIBRATE_HIGH_LIMIT \
- (1000*IOC4_EXTINT_COUNT_DIVISOR/IOC4_CALIBRATE_HIGH_MHZ)
-#define IOC4_CALIBRATE_DEFAULT \
- (1000*IOC4_EXTINT_COUNT_DIVISOR/IOC4_CALIBRATE_DEFAULT_MHZ)
-
-#define IOC4_CALIBRATE_END \
- (IOC4_CALIBRATE_CYCLES + IOC4_CALIBRATE_DISCARD)
-
-#define IOC4_INT_OUT_MODE_TOGGLE 0x7 /* Toggle INT_OUT every COUNT+1 ticks */
-
-/* Determines external interrupt output clock period of the PCI bus an
- * IOC4 is attached to. This value can be used to determine the PCI
- * bus speed.
- *
- * IOC4 has a design feature that various internal timers are derived from
- * the PCI bus clock. This causes IOC4 device drivers to need to take the
- * bus speed into account when setting various register values (e.g. INT_OUT
- * register COUNT field, UART divisors, etc). Since this information is
- * needed by several subdrivers, it is determined by the main IOC4 driver,
- * even though the following code utilizes external interrupt registers
- * to perform the speed calculation.
- */
-static void
-ioc4_clock_calibrate(struct ioc4_driver_data *idd)
-{
- union ioc4_int_out int_out;
- union ioc4_gpcr gpcr;
- unsigned int state, last_state;
- uint64_t start, end, period;
- unsigned int count;
-
- /* Enable output */
- gpcr.raw = 0;
- gpcr.fields.dir = IOC4_GPCR_DIR_0;
- gpcr.fields.int_out_en = 1;
- writel(gpcr.raw, &idd->idd_misc_regs->gpcr_s.raw);
-
- /* Reset to power-on state */
- writel(0, &idd->idd_misc_regs->int_out.raw);
-
- /* Set up square wave */
- int_out.raw = 0;
- int_out.fields.count = IOC4_CALIBRATE_COUNT;
- int_out.fields.mode = IOC4_INT_OUT_MODE_TOGGLE;
- int_out.fields.diag = 0;
- writel(int_out.raw, &idd->idd_misc_regs->int_out.raw);
-
- /* Check square wave period averaged over some number of cycles */
- start = ktime_get_ns();
- state = 1; /* make sure the first read isn't a rising edge */
- for (count = 0; count <= IOC4_CALIBRATE_END; count++) {
- do { /* wait for a rising edge */
- last_state = state;
- int_out.raw = readl(&idd->idd_misc_regs->int_out.raw);
- state = int_out.fields.int_out;
- } while (last_state || !state);
-
- /* discard the first few cycles */
- if (count == IOC4_CALIBRATE_DISCARD)
- start = ktime_get_ns();
- }
- end = ktime_get_ns();
-
- /* Calculation rearranged to preserve intermediate precision.
- * Logically:
- * 1. "end - start" gives us the measurement period over all
- * the square wave cycles.
- * 2. Divide by number of square wave cycles to get the period
- * of a square wave cycle.
- * 3. Divide by 2*(int_out.fields.count+1), which is the formula
- * by which the IOC4 generates the square wave, to get the
- * period of an IOC4 INT_OUT count.
- */
- period = (end - start) /
- (IOC4_CALIBRATE_CYCLES * 2 * (IOC4_CALIBRATE_COUNT + 1));
-
- /* Bounds check the result. */
- if (period > IOC4_CALIBRATE_LOW_LIMIT ||
- period < IOC4_CALIBRATE_HIGH_LIMIT) {
- printk(KERN_INFO
- "IOC4 %s: Clock calibration failed. Assuming"
- "PCI clock is %d ns.\n",
- pci_name(idd->idd_pdev),
- IOC4_CALIBRATE_DEFAULT / IOC4_EXTINT_COUNT_DIVISOR);
- period = IOC4_CALIBRATE_DEFAULT;
- } else {
- u64 ns = period;
-
- do_div(ns, IOC4_EXTINT_COUNT_DIVISOR);
- printk(KERN_DEBUG
- "IOC4 %s: PCI clock is %llu ns.\n",
- pci_name(idd->idd_pdev), (unsigned long long)ns);
- }
-
- /* Remember results. We store the extint clock period rather
- * than the PCI clock period so that greater precision is
- * retained. Divide by IOC4_EXTINT_COUNT_DIVISOR to get
- * PCI clock period.
- */
- idd->count_period = period;
-}
-
-/* There are three variants of IOC4 cards: IO9, IO10, and PCI-RT.
- * Each brings out different combinations of IOC4 signals, thus.
- * the IOC4 subdrivers need to know to which we're attached.
- *
- * We look for the presence of a SCSI (IO9) or SATA (IO10) controller
- * on the same PCI bus at slot number 3 to differentiate IO9 from IO10.
- * If neither is present, it's a PCI-RT.
- */
-static unsigned int
-ioc4_variant(struct ioc4_driver_data *idd)
-{
- struct pci_dev *pdev = NULL;
- int found = 0;
-
- /* IO9: Look for a QLogic ISP 12160 at the same bus and slot 3. */
- do {
- pdev = pci_get_device(PCI_VENDOR_ID_QLOGIC,
- PCI_DEVICE_ID_QLOGIC_ISP12160, pdev);
- if (pdev &&
- idd->idd_pdev->bus->number == pdev->bus->number &&
- 3 == PCI_SLOT(pdev->devfn))
- found = 1;
- } while (pdev && !found);
- if (NULL != pdev) {
- pci_dev_put(pdev);
- return IOC4_VARIANT_IO9;
- }
-
- /* IO10: Look for a Vitesse VSC 7174 at the same bus and slot 3. */
- pdev = NULL;
- do {
- pdev = pci_get_device(PCI_VENDOR_ID_VITESSE,
- PCI_DEVICE_ID_VITESSE_VSC7174, pdev);
- if (pdev &&
- idd->idd_pdev->bus->number == pdev->bus->number &&
- 3 == PCI_SLOT(pdev->devfn))
- found = 1;
- } while (pdev && !found);
- if (NULL != pdev) {
- pci_dev_put(pdev);
- return IOC4_VARIANT_IO10;
- }
-
- /* PCI-RT: No SCSI/SATA controller will be present */
- return IOC4_VARIANT_PCI_RT;
-}
-
-static void
-ioc4_load_modules(struct work_struct *work)
-{
- request_module("sgiioc4");
-}
-
-static DECLARE_WORK(ioc4_load_modules_work, ioc4_load_modules);
-
-/* Adds a new instance of an IOC4 card */
-static int
-ioc4_probe(struct pci_dev *pdev, const struct pci_device_id *pci_id)
-{
- struct ioc4_driver_data *idd;
- struct ioc4_submodule *is;
- uint32_t pcmd;
- int ret;
-
- /* Enable IOC4 and take ownership of it */
- if ((ret = pci_enable_device(pdev))) {
- printk(KERN_WARNING
- "%s: Failed to enable IOC4 device for pci_dev %s.\n",
- __func__, pci_name(pdev));
- goto out;
- }
- pci_set_master(pdev);
-
- /* Set up per-IOC4 data */
- idd = kmalloc(sizeof(struct ioc4_driver_data), GFP_KERNEL);
- if (!idd) {
- printk(KERN_WARNING
- "%s: Failed to allocate IOC4 data for pci_dev %s.\n",
- __func__, pci_name(pdev));
- ret = -ENODEV;
- goto out_idd;
- }
- idd->idd_pdev = pdev;
- idd->idd_pci_id = pci_id;
-
- /* Map IOC4 misc registers. These are shared between subdevices
- * so the main IOC4 module manages them.
- */
- idd->idd_bar0 = pci_resource_start(idd->idd_pdev, 0);
- if (!idd->idd_bar0) {
- printk(KERN_WARNING
- "%s: Unable to find IOC4 misc resource "
- "for pci_dev %s.\n",
- __func__, pci_name(idd->idd_pdev));
- ret = -ENODEV;
- goto out_pci;
- }
- if (!request_mem_region(idd->idd_bar0, sizeof(struct ioc4_misc_regs),
- "ioc4_misc")) {
- printk(KERN_WARNING
- "%s: Unable to request IOC4 misc region "
- "for pci_dev %s.\n",
- __func__, pci_name(idd->idd_pdev));
- ret = -ENODEV;
- goto out_pci;
- }
- idd->idd_misc_regs = ioremap(idd->idd_bar0,
- sizeof(struct ioc4_misc_regs));
- if (!idd->idd_misc_regs) {
- printk(KERN_WARNING
- "%s: Unable to remap IOC4 misc region "
- "for pci_dev %s.\n",
- __func__, pci_name(idd->idd_pdev));
- ret = -ENODEV;
- goto out_misc_region;
- }
-
- /* Failsafe portion of per-IOC4 initialization */
-
- /* Detect card variant */
- idd->idd_variant = ioc4_variant(idd);
- printk(KERN_INFO "IOC4 %s: %s card detected.\n", pci_name(pdev),
- idd->idd_variant == IOC4_VARIANT_IO9 ? "IO9" :
- idd->idd_variant == IOC4_VARIANT_PCI_RT ? "PCI-RT" :
- idd->idd_variant == IOC4_VARIANT_IO10 ? "IO10" : "unknown");
-
- /* Initialize IOC4 */
- pci_read_config_dword(idd->idd_pdev, PCI_COMMAND, &pcmd);
- pci_write_config_dword(idd->idd_pdev, PCI_COMMAND,
- pcmd | PCI_COMMAND_PARITY | PCI_COMMAND_SERR);
-
- /* Determine PCI clock */
- ioc4_clock_calibrate(idd);
-
- /* Disable/clear all interrupts. Need to do this here lest
- * one submodule request the shared IOC4 IRQ, but interrupt
- * is generated by a different subdevice.
- */
- /* Disable */
- writel(~0, &idd->idd_misc_regs->other_iec.raw);
- writel(~0, &idd->idd_misc_regs->sio_iec);
- /* Clear (i.e. acknowledge) */
- writel(~0, &idd->idd_misc_regs->other_ir.raw);
- writel(~0, &idd->idd_misc_regs->sio_ir);
-
- /* Track PCI-device specific data */
- idd->idd_serial_data = NULL;
- pci_set_drvdata(idd->idd_pdev, idd);
-
- mutex_lock(&ioc4_mutex);
- list_add_tail(&idd->idd_list, &ioc4_devices);
-
- /* Add this IOC4 to all submodules */
- list_for_each_entry(is, &ioc4_submodules, is_list) {
- if (is->is_probe && is->is_probe(idd)) {
- printk(KERN_WARNING
- "%s: IOC4 submodule 0x%s probe failed "
- "for pci_dev %s.\n",
- __func__, module_name(is->is_owner),
- pci_name(idd->idd_pdev));
- }
- }
- mutex_unlock(&ioc4_mutex);
-
- /* Request sgiioc4 IDE driver on boards that bring that functionality
- * off of IOC4. The root filesystem may be hosted on a drive connected
- * to IOC4, so we need to make sure the sgiioc4 driver is loaded as it
- * won't be picked up by modprobes due to the ioc4 module owning the
- * PCI device.
- */
- if (idd->idd_variant != IOC4_VARIANT_PCI_RT) {
- /* Request the module from a work procedure as the modprobe
- * goes out to a userland helper and that will hang if done
- * directly from ioc4_probe().
- */
- printk(KERN_INFO "IOC4 loading sgiioc4 submodule\n");
- schedule_work(&ioc4_load_modules_work);
- }
-
- return 0;
-
-out_misc_region:
- release_mem_region(idd->idd_bar0, sizeof(struct ioc4_misc_regs));
-out_pci:
- kfree(idd);
-out_idd:
- pci_disable_device(pdev);
-out:
- return ret;
-}
-
-/* Removes a particular instance of an IOC4 card. */
-static void
-ioc4_remove(struct pci_dev *pdev)
-{
- struct ioc4_submodule *is;
- struct ioc4_driver_data *idd;
-
- idd = pci_get_drvdata(pdev);
-
- /* Remove this IOC4 from all submodules */
- mutex_lock(&ioc4_mutex);
- list_for_each_entry(is, &ioc4_submodules, is_list) {
- if (is->is_remove && is->is_remove(idd)) {
- printk(KERN_WARNING
- "%s: IOC4 submodule 0x%s remove failed "
- "for pci_dev %s.\n",
- __func__, module_name(is->is_owner),
- pci_name(idd->idd_pdev));
- }
- }
- mutex_unlock(&ioc4_mutex);
-
- /* Release resources */
- iounmap(idd->idd_misc_regs);
- if (!idd->idd_bar0) {
- printk(KERN_WARNING
- "%s: Unable to get IOC4 misc mapping for pci_dev %s. "
- "Device removal may be incomplete.\n",
- __func__, pci_name(idd->idd_pdev));
- }
- release_mem_region(idd->idd_bar0, sizeof(struct ioc4_misc_regs));
-
- /* Disable IOC4 and relinquish */
- pci_disable_device(pdev);
-
- /* Remove and free driver data */
- mutex_lock(&ioc4_mutex);
- list_del(&idd->idd_list);
- mutex_unlock(&ioc4_mutex);
- kfree(idd);
-}
-
-static const struct pci_device_id ioc4_id_table[] = {
- {PCI_VENDOR_ID_SGI, PCI_DEVICE_ID_SGI_IOC4, PCI_ANY_ID,
- PCI_ANY_ID, 0x0b4000, 0xFFFFFF},
- {0}
-};
-
-static struct pci_driver ioc4_driver = {
- .name = "IOC4",
- .id_table = ioc4_id_table,
- .probe = ioc4_probe,
- .remove = ioc4_remove,
-};
-
-MODULE_DEVICE_TABLE(pci, ioc4_id_table);
-
-/*********************
- * Module management *
- *********************/
-
-/* Module load */
-static int __init
-ioc4_init(void)
-{
- return pci_register_driver(&ioc4_driver);
-}
-
-/* Module unload */
-static void __exit
-ioc4_exit(void)
-{
- /* Ensure ioc4_load_modules() has completed before exiting */
- flush_work(&ioc4_load_modules_work);
- pci_unregister_driver(&ioc4_driver);
-}
-
-module_init(ioc4_init);
-module_exit(ioc4_exit);
-
-MODULE_AUTHOR("Brent Casavant - Silicon Graphics, Inc. <bcasavan@....com>");
-MODULE_DESCRIPTION("PCI driver master module for SGI IOC4 Base-IO Card");
-MODULE_LICENSE("GPL");
-
-EXPORT_SYMBOL(ioc4_register_submodule);
-EXPORT_SYMBOL(ioc4_unregister_submodule);
diff --git a/include/linux/ioc4.h b/include/linux/ioc4.h
deleted file mode 100644
index 51e2b9fb6372..000000000000
--- a/include/linux/ioc4.h
+++ /dev/null
@@ -1,184 +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 _LINUX_IOC4_H
-#define _LINUX_IOC4_H
-
-#include <linux/interrupt.h>
-
-/***************
- * Definitions *
- ***************/
-
-/* Miscellaneous values inherent to hardware */
-
-#define IOC4_EXTINT_COUNT_DIVISOR 520 /* PCI clocks per COUNT tick */
-
-/***********************************
- * Structures needed by subdrivers *
- ***********************************/
-
-/* This structure fully describes the IOC4 miscellaneous registers which
- * appear at bar[0]+0x00000 through bar[0]+0x0005c. The corresponding
- * PCI resource is managed by the main IOC4 driver because it contains
- * registers of interest to many different IOC4 subdrivers.
- */
-struct ioc4_misc_regs {
- /* Miscellaneous IOC4 registers */
- union ioc4_pci_err_addr_l {
- uint32_t raw;
- struct {
- uint32_t valid:1; /* Address captured */
- uint32_t master_id:4; /* Unit causing error
- * 0/1: Serial port 0 TX/RX
- * 2/3: Serial port 1 TX/RX
- * 4/5: Serial port 2 TX/RX
- * 6/7: Serial port 3 TX/RX
- * 8: ATA/ATAPI
- * 9-15: Undefined
- */
- uint32_t mul_err:1; /* Multiple errors occurred */
- uint32_t addr:26; /* Bits 31-6 of error addr */
- } fields;
- } pci_err_addr_l;
- uint32_t pci_err_addr_h; /* Bits 63-32 of error addr */
- union ioc4_sio_int {
- uint32_t raw;
- struct {
- uint8_t tx_mt:1; /* TX ring buffer empty */
- uint8_t rx_full:1; /* RX ring buffer full */
- uint8_t rx_high:1; /* RX high-water exceeded */
- uint8_t rx_timer:1; /* RX timer has triggered */
- uint8_t delta_dcd:1; /* DELTA_DCD seen */
- uint8_t delta_cts:1; /* DELTA_CTS seen */
- uint8_t intr_pass:1; /* Interrupt pass-through */
- uint8_t tx_explicit:1; /* TX, MCW, or delay complete */
- } fields[4];
- } sio_ir; /* Serial interrupt state */
- union ioc4_other_int {
- uint32_t raw;
- struct {
- uint32_t ata_int:1; /* ATA port passthru */
- uint32_t ata_memerr:1; /* ATA halted by mem error */
- uint32_t memerr:4; /* Serial halted by mem err */
- uint32_t kbd_int:1; /* kbd/mouse intr asserted */
- uint32_t reserved:16; /* zero */
- uint32_t rt_int:1; /* INT_OUT section latch */
- uint32_t gen_int:8; /* Intr. from generic pins */
- } fields;
- } other_ir; /* Other interrupt state */
- union ioc4_sio_int sio_ies; /* Serial interrupt enable set */
- union ioc4_other_int other_ies; /* Other interrupt enable set */
- union ioc4_sio_int sio_iec; /* Serial interrupt enable clear */
- union ioc4_other_int other_iec; /* Other interrupt enable clear */
- union ioc4_sio_cr {
- uint32_t raw;
- struct {
- uint32_t cmd_pulse:4; /* Bytebus strobe width */
- uint32_t arb_diag:3; /* PCI bus requester */
- uint32_t sio_diag_idle:1; /* Active ser req? */
- uint32_t ata_diag_idle:1; /* Active ATA req? */
- uint32_t ata_diag_active:1; /* ATA req is winner */
- uint32_t reserved:22; /* zero */
- } fields;
- } sio_cr;
- uint32_t unused1;
- union ioc4_int_out {
- uint32_t raw;
- struct {
- uint32_t count:16; /* Period control */
- uint32_t mode:3; /* Output signal shape */
- uint32_t reserved:11; /* zero */
- uint32_t diag:1; /* Timebase control */
- uint32_t int_out:1; /* Current value */
- } fields;
- } int_out; /* External interrupt output control */
- uint32_t unused2;
- union ioc4_gpcr {
- uint32_t raw;
- struct {
- uint32_t dir:8; /* Pin direction */
- uint32_t edge:8; /* Edge/level mode */
- uint32_t reserved1:4; /* zero */
- uint32_t int_out_en:1; /* INT_OUT enable */
- uint32_t reserved2:11; /* zero */
- } fields;
- } gpcr_s; /* Generic PIO control set */
- union ioc4_gpcr gpcr_c; /* Generic PIO control clear */
- union ioc4_gpdr {
- uint32_t raw;
- struct {
- uint32_t gen_pin:8; /* State of pins */
- uint32_t reserved:24;
- } fields;
- } gpdr; /* Generic PIO data */
- uint32_t unused3;
- union ioc4_gppr {
- uint32_t raw;
- struct {
- uint32_t gen_pin:1; /* Single pin state */
- uint32_t reserved:31;
- } fields;
- } gppr[8]; /* Generic PIO pins */
-};
-
-/* Masks for GPCR DIR pins */
-#define IOC4_GPCR_DIR_0 0x01 /* External interrupt output */
-#define IOC4_GPCR_DIR_1 0x02 /* External interrupt input */
-#define IOC4_GPCR_DIR_2 0x04
-#define IOC4_GPCR_DIR_3 0x08 /* Keyboard/mouse presence */
-#define IOC4_GPCR_DIR_4 0x10 /* Ser. port 0 xcvr select (0=232, 1=422) */
-#define IOC4_GPCR_DIR_5 0x20 /* Ser. port 1 xcvr select (0=232, 1=422) */
-#define IOC4_GPCR_DIR_6 0x40 /* Ser. port 2 xcvr select (0=232, 1=422) */
-#define IOC4_GPCR_DIR_7 0x80 /* Ser. port 3 xcvr select (0=232, 1=422) */
-
-/* Masks for GPCR EDGE pins */
-#define IOC4_GPCR_EDGE_0 0x01
-#define IOC4_GPCR_EDGE_1 0x02 /* External interrupt input */
-#define IOC4_GPCR_EDGE_2 0x04
-#define IOC4_GPCR_EDGE_3 0x08
-#define IOC4_GPCR_EDGE_4 0x10
-#define IOC4_GPCR_EDGE_5 0x20
-#define IOC4_GPCR_EDGE_6 0x40
-#define IOC4_GPCR_EDGE_7 0x80
-
-#define IOC4_VARIANT_IO9 0x0900
-#define IOC4_VARIANT_PCI_RT 0x0901
-#define IOC4_VARIANT_IO10 0x1000
-
-/* One of these per IOC4 */
-struct ioc4_driver_data {
- struct list_head idd_list;
- unsigned long idd_bar0;
- struct pci_dev *idd_pdev;
- const struct pci_device_id *idd_pci_id;
- struct ioc4_misc_regs __iomem *idd_misc_regs;
- unsigned long count_period;
- void *idd_serial_data;
- unsigned int idd_variant;
-};
-
-/* One per submodule */
-struct ioc4_submodule {
- struct list_head is_list;
- char *is_name;
- struct module *is_owner;
- int (*is_probe) (struct ioc4_driver_data *);
- int (*is_remove) (struct ioc4_driver_data *);
-};
-
-#define IOC4_NUM_CARDS 8 /* max cards per partition */
-
-/**********************************
- * Functions needed by submodules *
- **********************************/
-
-extern int ioc4_register_submodule(struct ioc4_submodule *);
-extern void ioc4_unregister_submodule(struct ioc4_submodule *);
-
-#endif /* _LINUX_IOC4_H */
diff --git a/include/linux/pci_ids.h b/include/linux/pci_ids.h
index c842735a4f45..85e2ca611d42 100644
--- a/include/linux/pci_ids.h
+++ b/include/linux/pci_ids.h
@@ -1070,7 +1070,6 @@
#define PCI_VENDOR_ID_SGI 0x10a9
#define PCI_DEVICE_ID_SGI_IOC3 0x0003
#define PCI_DEVICE_ID_SGI_LITHIUM 0x1002
-#define PCI_DEVICE_ID_SGI_IOC4 0x100a
#define PCI_VENDOR_ID_WINBOND 0x10ad
#define PCI_DEVICE_ID_WINBOND_82C105 0x0105
--
2.20.1
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