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7d12e780e0
Maintain a per-CPU global "struct pt_regs *" variable which can be used instead of passing regs around manually through all ~1800 interrupt handlers in the Linux kernel. The regs pointer is used in few places, but it potentially costs both stack space and code to pass it around. On the FRV arch, removing the regs parameter from all the genirq function results in a 20% speed up of the IRQ exit path (ie: from leaving timer_interrupt() to leaving do_IRQ()). Where appropriate, an arch may override the generic storage facility and do something different with the variable. On FRV, for instance, the address is maintained in GR28 at all times inside the kernel as part of general exception handling. Having looked over the code, it appears that the parameter may be handed down through up to twenty or so layers of functions. Consider a USB character device attached to a USB hub, attached to a USB controller that posts its interrupts through a cascaded auxiliary interrupt controller. A character device driver may want to pass regs to the sysrq handler through the input layer which adds another few layers of parameter passing. I've build this code with allyesconfig for x86_64 and i386. I've runtested the main part of the code on FRV and i386, though I can't test most of the drivers. I've also done partial conversion for powerpc and MIPS - these at least compile with minimal configurations. This will affect all archs. Mostly the changes should be relatively easy. Take do_IRQ(), store the regs pointer at the beginning, saving the old one: struct pt_regs *old_regs = set_irq_regs(regs); And put the old one back at the end: set_irq_regs(old_regs); Don't pass regs through to generic_handle_irq() or __do_IRQ(). In timer_interrupt(), this sort of change will be necessary: - update_process_times(user_mode(regs)); - profile_tick(CPU_PROFILING, regs); + update_process_times(user_mode(get_irq_regs())); + profile_tick(CPU_PROFILING); I'd like to move update_process_times()'s use of get_irq_regs() into itself, except that i386, alone of the archs, uses something other than user_mode(). Some notes on the interrupt handling in the drivers: (*) input_dev() is now gone entirely. The regs pointer is no longer stored in the input_dev struct. (*) finish_unlinks() in drivers/usb/host/ohci-q.c needs checking. It does something different depending on whether it's been supplied with a regs pointer or not. (*) Various IRQ handler function pointers have been moved to type irq_handler_t. Signed-Off-By: David Howells <dhowells@redhat.com> (cherry picked from 1b16e7ac850969f38b375e511e3fa2f474a33867 commit)
943 lines
24 KiB
C
943 lines
24 KiB
C
/*
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* HighPoint RR3xxx controller driver for Linux
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* Copyright (C) 2006 HighPoint Technologies, Inc. All Rights Reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* Please report bugs/comments/suggestions to linux@highpoint-tech.com
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*
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* For more information, visit http://www.highpoint-tech.com
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*/
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#include <linux/module.h>
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#include <linux/types.h>
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#include <linux/string.h>
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#include <linux/kernel.h>
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#include <linux/pci.h>
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#include <linux/interrupt.h>
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#include <linux/errno.h>
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#include <linux/delay.h>
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#include <linux/timer.h>
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#include <linux/spinlock.h>
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#include <linux/hdreg.h>
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#include <asm/uaccess.h>
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#include <asm/io.h>
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#include <asm/div64.h>
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#include <scsi/scsi_cmnd.h>
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#include <scsi/scsi_device.h>
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#include <scsi/scsi.h>
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#include <scsi/scsi_tcq.h>
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#include <scsi/scsi_host.h>
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#include "hptiop.h"
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MODULE_AUTHOR("HighPoint Technologies, Inc.");
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MODULE_DESCRIPTION("HighPoint RocketRAID 3xxx SATA Controller Driver");
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static char driver_name[] = "hptiop";
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static const char driver_name_long[] = "RocketRAID 3xxx SATA Controller driver";
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static const char driver_ver[] = "v1.0 (060426)";
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static void hptiop_host_request_callback(struct hptiop_hba *hba, u32 tag);
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static void hptiop_iop_request_callback(struct hptiop_hba *hba, u32 tag);
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static void hptiop_message_callback(struct hptiop_hba *hba, u32 msg);
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static inline void hptiop_pci_posting_flush(struct hpt_iopmu __iomem *iop)
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{
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readl(&iop->outbound_intstatus);
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}
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static int iop_wait_ready(struct hpt_iopmu __iomem *iop, u32 millisec)
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{
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u32 req = 0;
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int i;
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for (i = 0; i < millisec; i++) {
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req = readl(&iop->inbound_queue);
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if (req != IOPMU_QUEUE_EMPTY)
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break;
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msleep(1);
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}
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if (req != IOPMU_QUEUE_EMPTY) {
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writel(req, &iop->outbound_queue);
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hptiop_pci_posting_flush(iop);
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return 0;
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}
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return -1;
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}
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static void hptiop_request_callback(struct hptiop_hba *hba, u32 tag)
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{
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if ((tag & IOPMU_QUEUE_MASK_HOST_BITS) == IOPMU_QUEUE_ADDR_HOST_BIT)
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return hptiop_host_request_callback(hba,
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tag & ~IOPMU_QUEUE_ADDR_HOST_BIT);
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else
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return hptiop_iop_request_callback(hba, tag);
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}
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static inline void hptiop_drain_outbound_queue(struct hptiop_hba *hba)
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{
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u32 req;
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while ((req = readl(&hba->iop->outbound_queue)) != IOPMU_QUEUE_EMPTY) {
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if (req & IOPMU_QUEUE_MASK_HOST_BITS)
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hptiop_request_callback(hba, req);
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else {
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struct hpt_iop_request_header __iomem * p;
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p = (struct hpt_iop_request_header __iomem *)
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((char __iomem *)hba->iop + req);
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if (readl(&p->flags) & IOP_REQUEST_FLAG_SYNC_REQUEST) {
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if (readl(&p->context))
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hptiop_request_callback(hba, req);
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else
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writel(1, &p->context);
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}
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else
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hptiop_request_callback(hba, req);
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}
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}
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}
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static int __iop_intr(struct hptiop_hba *hba)
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{
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struct hpt_iopmu __iomem *iop = hba->iop;
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u32 status;
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int ret = 0;
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status = readl(&iop->outbound_intstatus);
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if (status & IOPMU_OUTBOUND_INT_MSG0) {
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u32 msg = readl(&iop->outbound_msgaddr0);
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dprintk("received outbound msg %x\n", msg);
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writel(IOPMU_OUTBOUND_INT_MSG0, &iop->outbound_intstatus);
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hptiop_message_callback(hba, msg);
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ret = 1;
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}
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if (status & IOPMU_OUTBOUND_INT_POSTQUEUE) {
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hptiop_drain_outbound_queue(hba);
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ret = 1;
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}
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return ret;
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}
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static int iop_send_sync_request(struct hptiop_hba *hba,
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void __iomem *_req, u32 millisec)
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{
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struct hpt_iop_request_header __iomem *req = _req;
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u32 i;
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writel(readl(&req->flags) | IOP_REQUEST_FLAG_SYNC_REQUEST,
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&req->flags);
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writel(0, &req->context);
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writel((unsigned long)req - (unsigned long)hba->iop,
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&hba->iop->inbound_queue);
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hptiop_pci_posting_flush(hba->iop);
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for (i = 0; i < millisec; i++) {
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__iop_intr(hba);
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if (readl(&req->context))
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return 0;
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msleep(1);
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}
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return -1;
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}
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static int iop_send_sync_msg(struct hptiop_hba *hba, u32 msg, u32 millisec)
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{
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u32 i;
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hba->msg_done = 0;
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writel(msg, &hba->iop->inbound_msgaddr0);
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hptiop_pci_posting_flush(hba->iop);
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for (i = 0; i < millisec; i++) {
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spin_lock_irq(hba->host->host_lock);
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__iop_intr(hba);
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spin_unlock_irq(hba->host->host_lock);
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if (hba->msg_done)
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break;
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msleep(1);
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}
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return hba->msg_done? 0 : -1;
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}
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static int iop_get_config(struct hptiop_hba *hba,
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struct hpt_iop_request_get_config *config)
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{
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u32 req32;
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struct hpt_iop_request_get_config __iomem *req;
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req32 = readl(&hba->iop->inbound_queue);
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if (req32 == IOPMU_QUEUE_EMPTY)
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return -1;
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req = (struct hpt_iop_request_get_config __iomem *)
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((unsigned long)hba->iop + req32);
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writel(0, &req->header.flags);
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writel(IOP_REQUEST_TYPE_GET_CONFIG, &req->header.type);
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writel(sizeof(struct hpt_iop_request_get_config), &req->header.size);
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writel(IOP_RESULT_PENDING, &req->header.result);
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if (iop_send_sync_request(hba, req, 20000)) {
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dprintk("Get config send cmd failed\n");
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return -1;
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}
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memcpy_fromio(config, req, sizeof(*config));
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writel(req32, &hba->iop->outbound_queue);
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return 0;
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}
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static int iop_set_config(struct hptiop_hba *hba,
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struct hpt_iop_request_set_config *config)
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{
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u32 req32;
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struct hpt_iop_request_set_config __iomem *req;
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req32 = readl(&hba->iop->inbound_queue);
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if (req32 == IOPMU_QUEUE_EMPTY)
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return -1;
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req = (struct hpt_iop_request_set_config __iomem *)
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((unsigned long)hba->iop + req32);
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memcpy_toio((u8 __iomem *)req + sizeof(struct hpt_iop_request_header),
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(u8 *)config + sizeof(struct hpt_iop_request_header),
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sizeof(struct hpt_iop_request_set_config) -
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sizeof(struct hpt_iop_request_header));
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writel(0, &req->header.flags);
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writel(IOP_REQUEST_TYPE_SET_CONFIG, &req->header.type);
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writel(sizeof(struct hpt_iop_request_set_config), &req->header.size);
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writel(IOP_RESULT_PENDING, &req->header.result);
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if (iop_send_sync_request(hba, req, 20000)) {
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dprintk("Set config send cmd failed\n");
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return -1;
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}
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writel(req32, &hba->iop->outbound_queue);
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return 0;
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}
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static int hptiop_initialize_iop(struct hptiop_hba *hba)
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{
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struct hpt_iopmu __iomem *iop = hba->iop;
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/* enable interrupts */
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writel(~(IOPMU_OUTBOUND_INT_POSTQUEUE | IOPMU_OUTBOUND_INT_MSG0),
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&iop->outbound_intmask);
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hba->initialized = 1;
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/* start background tasks */
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if (iop_send_sync_msg(hba,
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IOPMU_INBOUND_MSG0_START_BACKGROUND_TASK, 5000)) {
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printk(KERN_ERR "scsi%d: fail to start background task\n",
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hba->host->host_no);
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return -1;
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}
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return 0;
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}
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static int hptiop_map_pci_bar(struct hptiop_hba *hba)
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{
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u32 mem_base_phy, length;
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void __iomem *mem_base_virt;
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struct pci_dev *pcidev = hba->pcidev;
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if (!(pci_resource_flags(pcidev, 0) & IORESOURCE_MEM)) {
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printk(KERN_ERR "scsi%d: pci resource invalid\n",
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hba->host->host_no);
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return -1;
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}
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mem_base_phy = pci_resource_start(pcidev, 0);
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length = pci_resource_len(pcidev, 0);
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mem_base_virt = ioremap(mem_base_phy, length);
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if (!mem_base_virt) {
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printk(KERN_ERR "scsi%d: Fail to ioremap memory space\n",
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hba->host->host_no);
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return -1;
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}
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hba->iop = mem_base_virt;
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dprintk("hptiop_map_pci_bar: iop=%p\n", hba->iop);
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return 0;
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}
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static void hptiop_message_callback(struct hptiop_hba *hba, u32 msg)
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{
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dprintk("iop message 0x%x\n", msg);
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if (!hba->initialized)
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return;
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if (msg == IOPMU_INBOUND_MSG0_RESET) {
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atomic_set(&hba->resetting, 0);
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wake_up(&hba->reset_wq);
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}
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else if (msg <= IOPMU_INBOUND_MSG0_MAX)
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hba->msg_done = 1;
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}
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static inline struct hptiop_request *get_req(struct hptiop_hba *hba)
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{
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struct hptiop_request *ret;
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dprintk("get_req : req=%p\n", hba->req_list);
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ret = hba->req_list;
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if (ret)
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hba->req_list = ret->next;
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return ret;
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}
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static inline void free_req(struct hptiop_hba *hba, struct hptiop_request *req)
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{
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dprintk("free_req(%d, %p)\n", req->index, req);
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req->next = hba->req_list;
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hba->req_list = req;
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}
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static void hptiop_host_request_callback(struct hptiop_hba *hba, u32 tag)
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{
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struct hpt_iop_request_scsi_command *req;
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struct scsi_cmnd *scp;
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req = (struct hpt_iop_request_scsi_command *)hba->reqs[tag].req_virt;
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dprintk("hptiop_host_request_callback: req=%p, type=%d, "
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"result=%d, context=0x%x tag=%d\n",
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req, req->header.type, req->header.result,
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req->header.context, tag);
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BUG_ON(!req->header.result);
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BUG_ON(req->header.type != cpu_to_le32(IOP_REQUEST_TYPE_SCSI_COMMAND));
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scp = hba->reqs[tag].scp;
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if (HPT_SCP(scp)->mapped) {
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if (scp->use_sg)
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pci_unmap_sg(hba->pcidev,
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(struct scatterlist *)scp->request_buffer,
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scp->use_sg,
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scp->sc_data_direction
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);
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else
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pci_unmap_single(hba->pcidev,
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HPT_SCP(scp)->dma_handle,
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scp->request_bufflen,
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scp->sc_data_direction
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);
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}
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switch (le32_to_cpu(req->header.result)) {
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case IOP_RESULT_SUCCESS:
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scp->result = (DID_OK<<16);
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break;
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case IOP_RESULT_BAD_TARGET:
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scp->result = (DID_BAD_TARGET<<16);
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break;
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case IOP_RESULT_BUSY:
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scp->result = (DID_BUS_BUSY<<16);
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break;
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case IOP_RESULT_RESET:
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scp->result = (DID_RESET<<16);
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break;
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case IOP_RESULT_FAIL:
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scp->result = (DID_ERROR<<16);
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break;
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case IOP_RESULT_INVALID_REQUEST:
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scp->result = (DID_ABORT<<16);
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break;
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case IOP_RESULT_MODE_SENSE_CHECK_CONDITION:
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scp->result = SAM_STAT_CHECK_CONDITION;
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memset(&scp->sense_buffer,
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0, sizeof(scp->sense_buffer));
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memcpy(&scp->sense_buffer,
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&req->sg_list, le32_to_cpu(req->dataxfer_length));
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break;
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default:
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scp->result = ((DRIVER_INVALID|SUGGEST_ABORT)<<24) |
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(DID_ABORT<<16);
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break;
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}
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dprintk("scsi_done(%p)\n", scp);
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scp->scsi_done(scp);
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free_req(hba, &hba->reqs[tag]);
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}
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void hptiop_iop_request_callback(struct hptiop_hba *hba, u32 tag)
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{
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struct hpt_iop_request_header __iomem *req;
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struct hpt_iop_request_ioctl_command __iomem *p;
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struct hpt_ioctl_k *arg;
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req = (struct hpt_iop_request_header __iomem *)
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((unsigned long)hba->iop + tag);
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dprintk("hptiop_iop_request_callback: req=%p, type=%d, "
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"result=%d, context=0x%x tag=%d\n",
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req, readl(&req->type), readl(&req->result),
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readl(&req->context), tag);
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BUG_ON(!readl(&req->result));
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BUG_ON(readl(&req->type) != IOP_REQUEST_TYPE_IOCTL_COMMAND);
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p = (struct hpt_iop_request_ioctl_command __iomem *)req;
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arg = (struct hpt_ioctl_k *)(unsigned long)
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(readl(&req->context) |
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((u64)readl(&req->context_hi32)<<32));
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if (readl(&req->result) == IOP_RESULT_SUCCESS) {
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arg->result = HPT_IOCTL_RESULT_OK;
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if (arg->outbuf_size)
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memcpy_fromio(arg->outbuf,
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&p->buf[(readl(&p->inbuf_size) + 3)& ~3],
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arg->outbuf_size);
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if (arg->bytes_returned)
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*arg->bytes_returned = arg->outbuf_size;
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}
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else
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arg->result = HPT_IOCTL_RESULT_FAILED;
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arg->done(arg);
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writel(tag, &hba->iop->outbound_queue);
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}
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static irqreturn_t hptiop_intr(int irq, void *dev_id)
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{
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struct hptiop_hba *hba = dev_id;
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int handled;
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unsigned long flags;
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spin_lock_irqsave(hba->host->host_lock, flags);
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handled = __iop_intr(hba);
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spin_unlock_irqrestore(hba->host->host_lock, flags);
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return handled;
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}
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static int hptiop_buildsgl(struct scsi_cmnd *scp, struct hpt_iopsg *psg)
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{
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struct Scsi_Host *host = scp->device->host;
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struct hptiop_hba *hba = (struct hptiop_hba *)host->hostdata;
|
|
struct scatterlist *sglist = (struct scatterlist *)scp->request_buffer;
|
|
|
|
/*
|
|
* though we'll not get non-use_sg fields anymore,
|
|
* keep use_sg checking anyway
|
|
*/
|
|
if (scp->use_sg) {
|
|
int idx;
|
|
|
|
HPT_SCP(scp)->sgcnt = pci_map_sg(hba->pcidev,
|
|
sglist, scp->use_sg,
|
|
scp->sc_data_direction);
|
|
HPT_SCP(scp)->mapped = 1;
|
|
BUG_ON(HPT_SCP(scp)->sgcnt > hba->max_sg_descriptors);
|
|
|
|
for (idx = 0; idx < HPT_SCP(scp)->sgcnt; idx++) {
|
|
psg[idx].pci_address =
|
|
cpu_to_le64(sg_dma_address(&sglist[idx]));
|
|
psg[idx].size = cpu_to_le32(sg_dma_len(&sglist[idx]));
|
|
psg[idx].eot = (idx == HPT_SCP(scp)->sgcnt - 1) ?
|
|
cpu_to_le32(1) : 0;
|
|
}
|
|
|
|
return HPT_SCP(scp)->sgcnt;
|
|
} else {
|
|
HPT_SCP(scp)->dma_handle = pci_map_single(
|
|
hba->pcidev,
|
|
scp->request_buffer,
|
|
scp->request_bufflen,
|
|
scp->sc_data_direction
|
|
);
|
|
HPT_SCP(scp)->mapped = 1;
|
|
psg->pci_address = cpu_to_le64(HPT_SCP(scp)->dma_handle);
|
|
psg->size = cpu_to_le32(scp->request_bufflen);
|
|
psg->eot = cpu_to_le32(1);
|
|
return 1;
|
|
}
|
|
}
|
|
|
|
static int hptiop_queuecommand(struct scsi_cmnd *scp,
|
|
void (*done)(struct scsi_cmnd *))
|
|
{
|
|
struct Scsi_Host *host = scp->device->host;
|
|
struct hptiop_hba *hba = (struct hptiop_hba *)host->hostdata;
|
|
struct hpt_iop_request_scsi_command *req;
|
|
int sg_count = 0;
|
|
struct hptiop_request *_req;
|
|
|
|
BUG_ON(!done);
|
|
scp->scsi_done = done;
|
|
|
|
_req = get_req(hba);
|
|
if (_req == NULL) {
|
|
dprintk("hptiop_queuecmd : no free req\n");
|
|
return SCSI_MLQUEUE_HOST_BUSY;
|
|
}
|
|
|
|
_req->scp = scp;
|
|
|
|
dprintk("hptiop_queuecmd(scp=%p) %d/%d/%d/%d cdb=(%x-%x-%x) "
|
|
"req_index=%d, req=%p\n",
|
|
scp,
|
|
host->host_no, scp->device->channel,
|
|
scp->device->id, scp->device->lun,
|
|
*((u32 *)&scp->cmnd),
|
|
*((u32 *)&scp->cmnd + 1),
|
|
*((u32 *)&scp->cmnd + 2),
|
|
_req->index, _req->req_virt);
|
|
|
|
scp->result = 0;
|
|
|
|
if (scp->device->channel || scp->device->lun ||
|
|
scp->device->id > hba->max_devices) {
|
|
scp->result = DID_BAD_TARGET << 16;
|
|
free_req(hba, _req);
|
|
goto cmd_done;
|
|
}
|
|
|
|
req = (struct hpt_iop_request_scsi_command *)_req->req_virt;
|
|
|
|
/* build S/G table */
|
|
if (scp->request_bufflen)
|
|
sg_count = hptiop_buildsgl(scp, req->sg_list);
|
|
else
|
|
HPT_SCP(scp)->mapped = 0;
|
|
|
|
req->header.flags = cpu_to_le32(IOP_REQUEST_FLAG_OUTPUT_CONTEXT);
|
|
req->header.type = cpu_to_le32(IOP_REQUEST_TYPE_SCSI_COMMAND);
|
|
req->header.result = cpu_to_le32(IOP_RESULT_PENDING);
|
|
req->header.context = cpu_to_le32(IOPMU_QUEUE_ADDR_HOST_BIT |
|
|
(u32)_req->index);
|
|
req->header.context_hi32 = 0;
|
|
req->dataxfer_length = cpu_to_le32(scp->request_bufflen);
|
|
req->channel = scp->device->channel;
|
|
req->target = scp->device->id;
|
|
req->lun = scp->device->lun;
|
|
req->header.size = cpu_to_le32(
|
|
sizeof(struct hpt_iop_request_scsi_command)
|
|
- sizeof(struct hpt_iopsg)
|
|
+ sg_count * sizeof(struct hpt_iopsg));
|
|
|
|
memcpy(req->cdb, scp->cmnd, sizeof(req->cdb));
|
|
|
|
writel(IOPMU_QUEUE_ADDR_HOST_BIT | _req->req_shifted_phy,
|
|
&hba->iop->inbound_queue);
|
|
|
|
return 0;
|
|
|
|
cmd_done:
|
|
dprintk("scsi_done(scp=%p)\n", scp);
|
|
scp->scsi_done(scp);
|
|
return 0;
|
|
}
|
|
|
|
static const char *hptiop_info(struct Scsi_Host *host)
|
|
{
|
|
return driver_name_long;
|
|
}
|
|
|
|
static int hptiop_reset_hba(struct hptiop_hba *hba)
|
|
{
|
|
if (atomic_xchg(&hba->resetting, 1) == 0) {
|
|
atomic_inc(&hba->reset_count);
|
|
writel(IOPMU_INBOUND_MSG0_RESET,
|
|
&hba->iop->inbound_msgaddr0);
|
|
hptiop_pci_posting_flush(hba->iop);
|
|
}
|
|
|
|
wait_event_timeout(hba->reset_wq,
|
|
atomic_read(&hba->resetting) == 0, 60 * HZ);
|
|
|
|
if (atomic_read(&hba->resetting)) {
|
|
/* IOP is in unkown state, abort reset */
|
|
printk(KERN_ERR "scsi%d: reset failed\n", hba->host->host_no);
|
|
return -1;
|
|
}
|
|
|
|
if (iop_send_sync_msg(hba,
|
|
IOPMU_INBOUND_MSG0_START_BACKGROUND_TASK, 5000)) {
|
|
dprintk("scsi%d: fail to start background task\n",
|
|
hba->host->host_no);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int hptiop_reset(struct scsi_cmnd *scp)
|
|
{
|
|
struct Scsi_Host * host = scp->device->host;
|
|
struct hptiop_hba * hba = (struct hptiop_hba *)host->hostdata;
|
|
|
|
printk(KERN_WARNING "hptiop_reset(%d/%d/%d) scp=%p\n",
|
|
scp->device->host->host_no, scp->device->channel,
|
|
scp->device->id, scp);
|
|
|
|
return hptiop_reset_hba(hba)? FAILED : SUCCESS;
|
|
}
|
|
|
|
static int hptiop_adjust_disk_queue_depth(struct scsi_device *sdev,
|
|
int queue_depth)
|
|
{
|
|
if(queue_depth > 256)
|
|
queue_depth = 256;
|
|
scsi_adjust_queue_depth(sdev, MSG_ORDERED_TAG, queue_depth);
|
|
return queue_depth;
|
|
}
|
|
|
|
static ssize_t hptiop_show_version(struct class_device *class_dev, char *buf)
|
|
{
|
|
return snprintf(buf, PAGE_SIZE, "%s\n", driver_ver);
|
|
}
|
|
|
|
static ssize_t hptiop_show_fw_version(struct class_device *class_dev, char *buf)
|
|
{
|
|
struct Scsi_Host *host = class_to_shost(class_dev);
|
|
struct hptiop_hba *hba = (struct hptiop_hba *)host->hostdata;
|
|
|
|
return snprintf(buf, PAGE_SIZE, "%d.%d.%d.%d\n",
|
|
hba->firmware_version >> 24,
|
|
(hba->firmware_version >> 16) & 0xff,
|
|
(hba->firmware_version >> 8) & 0xff,
|
|
hba->firmware_version & 0xff);
|
|
}
|
|
|
|
static struct class_device_attribute hptiop_attr_version = {
|
|
.attr = {
|
|
.name = "driver-version",
|
|
.mode = S_IRUGO,
|
|
},
|
|
.show = hptiop_show_version,
|
|
};
|
|
|
|
static struct class_device_attribute hptiop_attr_fw_version = {
|
|
.attr = {
|
|
.name = "firmware-version",
|
|
.mode = S_IRUGO,
|
|
},
|
|
.show = hptiop_show_fw_version,
|
|
};
|
|
|
|
static struct class_device_attribute *hptiop_attrs[] = {
|
|
&hptiop_attr_version,
|
|
&hptiop_attr_fw_version,
|
|
NULL
|
|
};
|
|
|
|
static struct scsi_host_template driver_template = {
|
|
.module = THIS_MODULE,
|
|
.name = driver_name,
|
|
.queuecommand = hptiop_queuecommand,
|
|
.eh_device_reset_handler = hptiop_reset,
|
|
.eh_bus_reset_handler = hptiop_reset,
|
|
.info = hptiop_info,
|
|
.unchecked_isa_dma = 0,
|
|
.emulated = 0,
|
|
.use_clustering = ENABLE_CLUSTERING,
|
|
.proc_name = driver_name,
|
|
.shost_attrs = hptiop_attrs,
|
|
.this_id = -1,
|
|
.change_queue_depth = hptiop_adjust_disk_queue_depth,
|
|
};
|
|
|
|
static int __devinit hptiop_probe(struct pci_dev *pcidev,
|
|
const struct pci_device_id *id)
|
|
{
|
|
struct Scsi_Host *host = NULL;
|
|
struct hptiop_hba *hba;
|
|
struct hpt_iop_request_get_config iop_config;
|
|
struct hpt_iop_request_set_config set_config;
|
|
dma_addr_t start_phy;
|
|
void *start_virt;
|
|
u32 offset, i, req_size;
|
|
|
|
dprintk("hptiop_probe(%p)\n", pcidev);
|
|
|
|
if (pci_enable_device(pcidev)) {
|
|
printk(KERN_ERR "hptiop: fail to enable pci device\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
printk(KERN_INFO "adapter at PCI %d:%d:%d, IRQ %d\n",
|
|
pcidev->bus->number, pcidev->devfn >> 3, pcidev->devfn & 7,
|
|
pcidev->irq);
|
|
|
|
pci_set_master(pcidev);
|
|
|
|
/* Enable 64bit DMA if possible */
|
|
if (pci_set_dma_mask(pcidev, DMA_64BIT_MASK)) {
|
|
if (pci_set_dma_mask(pcidev, DMA_32BIT_MASK)) {
|
|
printk(KERN_ERR "hptiop: fail to set dma_mask\n");
|
|
goto disable_pci_device;
|
|
}
|
|
}
|
|
|
|
if (pci_request_regions(pcidev, driver_name)) {
|
|
printk(KERN_ERR "hptiop: pci_request_regions failed\n");
|
|
goto disable_pci_device;
|
|
}
|
|
|
|
host = scsi_host_alloc(&driver_template, sizeof(struct hptiop_hba));
|
|
if (!host) {
|
|
printk(KERN_ERR "hptiop: fail to alloc scsi host\n");
|
|
goto free_pci_regions;
|
|
}
|
|
|
|
hba = (struct hptiop_hba *)host->hostdata;
|
|
|
|
hba->pcidev = pcidev;
|
|
hba->host = host;
|
|
hba->initialized = 0;
|
|
|
|
atomic_set(&hba->resetting, 0);
|
|
atomic_set(&hba->reset_count, 0);
|
|
|
|
init_waitqueue_head(&hba->reset_wq);
|
|
init_waitqueue_head(&hba->ioctl_wq);
|
|
|
|
host->max_lun = 1;
|
|
host->max_channel = 0;
|
|
host->io_port = 0;
|
|
host->n_io_port = 0;
|
|
host->irq = pcidev->irq;
|
|
|
|
if (hptiop_map_pci_bar(hba))
|
|
goto free_scsi_host;
|
|
|
|
if (iop_wait_ready(hba->iop, 20000)) {
|
|
printk(KERN_ERR "scsi%d: firmware not ready\n",
|
|
hba->host->host_no);
|
|
goto unmap_pci_bar;
|
|
}
|
|
|
|
if (iop_get_config(hba, &iop_config)) {
|
|
printk(KERN_ERR "scsi%d: get config failed\n",
|
|
hba->host->host_no);
|
|
goto unmap_pci_bar;
|
|
}
|
|
|
|
hba->max_requests = min(le32_to_cpu(iop_config.max_requests),
|
|
HPTIOP_MAX_REQUESTS);
|
|
hba->max_devices = le32_to_cpu(iop_config.max_devices);
|
|
hba->max_request_size = le32_to_cpu(iop_config.request_size);
|
|
hba->max_sg_descriptors = le32_to_cpu(iop_config.max_sg_count);
|
|
hba->firmware_version = le32_to_cpu(iop_config.firmware_version);
|
|
hba->sdram_size = le32_to_cpu(iop_config.sdram_size);
|
|
|
|
host->max_sectors = le32_to_cpu(iop_config.data_transfer_length) >> 9;
|
|
host->max_id = le32_to_cpu(iop_config.max_devices);
|
|
host->sg_tablesize = le32_to_cpu(iop_config.max_sg_count);
|
|
host->can_queue = le32_to_cpu(iop_config.max_requests);
|
|
host->cmd_per_lun = le32_to_cpu(iop_config.max_requests);
|
|
host->max_cmd_len = 16;
|
|
|
|
set_config.vbus_id = cpu_to_le32(host->host_no);
|
|
set_config.iop_id = cpu_to_le32(host->host_no);
|
|
|
|
if (iop_set_config(hba, &set_config)) {
|
|
printk(KERN_ERR "scsi%d: set config failed\n",
|
|
hba->host->host_no);
|
|
goto unmap_pci_bar;
|
|
}
|
|
|
|
pci_set_drvdata(pcidev, host);
|
|
|
|
if (request_irq(pcidev->irq, hptiop_intr, IRQF_SHARED,
|
|
driver_name, hba)) {
|
|
printk(KERN_ERR "scsi%d: request irq %d failed\n",
|
|
hba->host->host_no, pcidev->irq);
|
|
goto unmap_pci_bar;
|
|
}
|
|
|
|
/* Allocate request mem */
|
|
req_size = sizeof(struct hpt_iop_request_scsi_command)
|
|
+ sizeof(struct hpt_iopsg) * (hba->max_sg_descriptors - 1);
|
|
if ((req_size& 0x1f) != 0)
|
|
req_size = (req_size + 0x1f) & ~0x1f;
|
|
|
|
dprintk("req_size=%d, max_requests=%d\n", req_size, hba->max_requests);
|
|
|
|
hba->req_size = req_size;
|
|
start_virt = dma_alloc_coherent(&pcidev->dev,
|
|
hba->req_size*hba->max_requests + 0x20,
|
|
&start_phy, GFP_KERNEL);
|
|
|
|
if (!start_virt) {
|
|
printk(KERN_ERR "scsi%d: fail to alloc request mem\n",
|
|
hba->host->host_no);
|
|
goto free_request_irq;
|
|
}
|
|
|
|
hba->dma_coherent = start_virt;
|
|
hba->dma_coherent_handle = start_phy;
|
|
|
|
if ((start_phy & 0x1f) != 0)
|
|
{
|
|
offset = ((start_phy + 0x1f) & ~0x1f) - start_phy;
|
|
start_phy += offset;
|
|
start_virt += offset;
|
|
}
|
|
|
|
hba->req_list = start_virt;
|
|
for (i = 0; i < hba->max_requests; i++) {
|
|
hba->reqs[i].next = NULL;
|
|
hba->reqs[i].req_virt = start_virt;
|
|
hba->reqs[i].req_shifted_phy = start_phy >> 5;
|
|
hba->reqs[i].index = i;
|
|
free_req(hba, &hba->reqs[i]);
|
|
start_virt = (char *)start_virt + hba->req_size;
|
|
start_phy = start_phy + hba->req_size;
|
|
}
|
|
|
|
/* Enable Interrupt and start background task */
|
|
if (hptiop_initialize_iop(hba))
|
|
goto free_request_mem;
|
|
|
|
if (scsi_add_host(host, &pcidev->dev)) {
|
|
printk(KERN_ERR "scsi%d: scsi_add_host failed\n",
|
|
hba->host->host_no);
|
|
goto free_request_mem;
|
|
}
|
|
|
|
|
|
scsi_scan_host(host);
|
|
|
|
dprintk("scsi%d: hptiop_probe successfully\n", hba->host->host_no);
|
|
return 0;
|
|
|
|
free_request_mem:
|
|
dma_free_coherent(&hba->pcidev->dev,
|
|
hba->req_size*hba->max_requests + 0x20,
|
|
hba->dma_coherent, hba->dma_coherent_handle);
|
|
|
|
free_request_irq:
|
|
free_irq(hba->pcidev->irq, hba);
|
|
|
|
unmap_pci_bar:
|
|
iounmap(hba->iop);
|
|
|
|
free_pci_regions:
|
|
pci_release_regions(pcidev) ;
|
|
|
|
free_scsi_host:
|
|
scsi_host_put(host);
|
|
|
|
disable_pci_device:
|
|
pci_disable_device(pcidev);
|
|
|
|
dprintk("scsi%d: hptiop_probe fail\n", host->host_no);
|
|
return -ENODEV;
|
|
}
|
|
|
|
static void hptiop_shutdown(struct pci_dev *pcidev)
|
|
{
|
|
struct Scsi_Host *host = pci_get_drvdata(pcidev);
|
|
struct hptiop_hba *hba = (struct hptiop_hba *)host->hostdata;
|
|
struct hpt_iopmu __iomem *iop = hba->iop;
|
|
u32 int_mask;
|
|
|
|
dprintk("hptiop_shutdown(%p)\n", hba);
|
|
|
|
/* stop the iop */
|
|
if (iop_send_sync_msg(hba, IOPMU_INBOUND_MSG0_SHUTDOWN, 60000))
|
|
printk(KERN_ERR "scsi%d: shutdown the iop timeout\n",
|
|
hba->host->host_no);
|
|
|
|
/* disable all outbound interrupts */
|
|
int_mask = readl(&iop->outbound_intmask);
|
|
writel(int_mask |
|
|
IOPMU_OUTBOUND_INT_MSG0 | IOPMU_OUTBOUND_INT_POSTQUEUE,
|
|
&iop->outbound_intmask);
|
|
hptiop_pci_posting_flush(iop);
|
|
}
|
|
|
|
static void hptiop_remove(struct pci_dev *pcidev)
|
|
{
|
|
struct Scsi_Host *host = pci_get_drvdata(pcidev);
|
|
struct hptiop_hba *hba = (struct hptiop_hba *)host->hostdata;
|
|
|
|
dprintk("scsi%d: hptiop_remove\n", hba->host->host_no);
|
|
|
|
scsi_remove_host(host);
|
|
|
|
hptiop_shutdown(pcidev);
|
|
|
|
free_irq(hba->pcidev->irq, hba);
|
|
|
|
dma_free_coherent(&hba->pcidev->dev,
|
|
hba->req_size * hba->max_requests + 0x20,
|
|
hba->dma_coherent,
|
|
hba->dma_coherent_handle);
|
|
|
|
iounmap(hba->iop);
|
|
|
|
pci_release_regions(hba->pcidev);
|
|
pci_set_drvdata(hba->pcidev, NULL);
|
|
pci_disable_device(hba->pcidev);
|
|
|
|
scsi_host_put(host);
|
|
}
|
|
|
|
static struct pci_device_id hptiop_id_table[] = {
|
|
{ PCI_DEVICE(0x1103, 0x3220) },
|
|
{ PCI_DEVICE(0x1103, 0x3320) },
|
|
{},
|
|
};
|
|
|
|
MODULE_DEVICE_TABLE(pci, hptiop_id_table);
|
|
|
|
static struct pci_driver hptiop_pci_driver = {
|
|
.name = driver_name,
|
|
.id_table = hptiop_id_table,
|
|
.probe = hptiop_probe,
|
|
.remove = hptiop_remove,
|
|
.shutdown = hptiop_shutdown,
|
|
};
|
|
|
|
static int __init hptiop_module_init(void)
|
|
{
|
|
printk(KERN_INFO "%s %s\n", driver_name_long, driver_ver);
|
|
return pci_register_driver(&hptiop_pci_driver);
|
|
}
|
|
|
|
static void __exit hptiop_module_exit(void)
|
|
{
|
|
pci_unregister_driver(&hptiop_pci_driver);
|
|
}
|
|
|
|
|
|
module_init(hptiop_module_init);
|
|
module_exit(hptiop_module_exit);
|
|
|
|
MODULE_LICENSE("GPL");
|