![Jan-Bernd Themann](/assets/img/avatar_default.png)
Hi Jeff, I fixed the __iomem issue and tested the driver with sparse. Looks good so far. Thanks for your effort. Jan-Bernd Themann Signed-off-by: Jan-Bernd Themann <themann@de.ibm.com> drivers/net/Kconfig | 9 drivers/net/Makefile | 1 drivers/net/ehea/Makefile | 6 drivers/net/ehea/ehea.h | 447 ++++++ drivers/net/ehea/ehea_ethtool.c | 294 ++++ drivers/net/ehea/ehea_hcall.h | 51 drivers/net/ehea/ehea_hw.h | 287 ++++ drivers/net/ehea/ehea_main.c | 2654 ++++++++++++++++++++++++++++++++++++++++ drivers/net/ehea/ehea_phyp.c | 705 ++++++++++ drivers/net/ehea/ehea_phyp.h | 455 ++++++ drivers/net/ehea/ehea_qmr.c | 582 ++++++++ drivers/net/ehea/ehea_qmr.h | 358 +++++ 12 files changed, 5849 insertions(+) Signed-off-by: Jeff Garzik <jeff@garzik.org>
583 lines
13 KiB
C
583 lines
13 KiB
C
/*
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* linux/drivers/net/ehea/ehea_qmr.c
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*
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* eHEA ethernet device driver for IBM eServer System p
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*
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* (C) Copyright IBM Corp. 2006
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*
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* Authors:
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* Christoph Raisch <raisch@de.ibm.com>
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* Jan-Bernd Themann <themann@de.ibm.com>
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* Thomas Klein <tklein@de.ibm.com>
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*
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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; either version 2, or (at your option)
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* any later version.
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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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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include "ehea.h"
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#include "ehea_phyp.h"
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#include "ehea_qmr.h"
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static void *hw_qpageit_get_inc(struct hw_queue *queue)
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{
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void *retvalue = hw_qeit_get(queue);
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queue->current_q_offset += queue->pagesize;
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if (queue->current_q_offset > queue->queue_length) {
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queue->current_q_offset -= queue->pagesize;
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retvalue = NULL;
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} else if (((u64) retvalue) & (EHEA_PAGESIZE-1)) {
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ehea_error("not on pageboundary");
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retvalue = NULL;
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}
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return retvalue;
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}
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static int hw_queue_ctor(struct hw_queue *queue, const u32 nr_of_pages,
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const u32 pagesize, const u32 qe_size)
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{
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int pages_per_kpage = PAGE_SIZE / pagesize;
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int i, k;
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if ((pagesize > PAGE_SIZE) || (!pages_per_kpage)) {
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ehea_error("pagesize conflict! kernel pagesize=%d, "
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"ehea pagesize=%d", (int)PAGE_SIZE, (int)pagesize);
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return -EINVAL;
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}
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queue->queue_length = nr_of_pages * pagesize;
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queue->queue_pages = kmalloc(nr_of_pages * sizeof(void*), GFP_KERNEL);
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if (!queue->queue_pages) {
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ehea_error("no mem for queue_pages");
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return -ENOMEM;
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}
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/*
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* allocate pages for queue:
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* outer loop allocates whole kernel pages (page aligned) and
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* inner loop divides a kernel page into smaller hea queue pages
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*/
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i = 0;
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while (i < nr_of_pages) {
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u8 *kpage = (u8*)get_zeroed_page(GFP_KERNEL);
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if (!kpage)
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goto out_nomem;
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for (k = 0; k < pages_per_kpage && i < nr_of_pages; k++) {
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(queue->queue_pages)[i] = (struct ehea_page*)kpage;
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kpage += pagesize;
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i++;
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}
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}
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queue->current_q_offset = 0;
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queue->qe_size = qe_size;
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queue->pagesize = pagesize;
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queue->toggle_state = 1;
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return 0;
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out_nomem:
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for (i = 0; i < nr_of_pages; i += pages_per_kpage) {
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if (!(queue->queue_pages)[i])
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break;
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free_page((unsigned long)(queue->queue_pages)[i]);
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}
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return -ENOMEM;
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}
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static void hw_queue_dtor(struct hw_queue *queue)
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{
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int pages_per_kpage = PAGE_SIZE / queue->pagesize;
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int i, nr_pages;
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if (!queue || !queue->queue_pages)
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return;
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nr_pages = queue->queue_length / queue->pagesize;
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for (i = 0; i < nr_pages; i += pages_per_kpage)
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free_page((unsigned long)(queue->queue_pages)[i]);
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kfree(queue->queue_pages);
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}
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struct ehea_cq *ehea_create_cq(struct ehea_adapter *adapter,
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int nr_of_cqe, u64 eq_handle, u32 cq_token)
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{
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struct ehea_cq *cq;
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struct h_epa epa;
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u64 *cq_handle_ref, hret, rpage;
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u32 act_nr_of_entries, act_pages, counter;
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int ret;
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void *vpage;
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cq = kzalloc(sizeof(*cq), GFP_KERNEL);
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if (!cq) {
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ehea_error("no mem for cq");
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goto out_nomem;
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}
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cq->attr.max_nr_of_cqes = nr_of_cqe;
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cq->attr.cq_token = cq_token;
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cq->attr.eq_handle = eq_handle;
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cq->adapter = adapter;
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cq_handle_ref = &cq->fw_handle;
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act_nr_of_entries = 0;
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act_pages = 0;
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hret = ehea_h_alloc_resource_cq(adapter->handle, &cq->attr,
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&cq->fw_handle, &cq->epas);
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if (hret != H_SUCCESS) {
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ehea_error("alloc_resource_cq failed");
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goto out_freemem;
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}
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ret = hw_queue_ctor(&cq->hw_queue, cq->attr.nr_pages,
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EHEA_PAGESIZE, sizeof(struct ehea_cqe));
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if (ret)
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goto out_freeres;
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for (counter = 0; counter < cq->attr.nr_pages; counter++) {
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vpage = hw_qpageit_get_inc(&cq->hw_queue);
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if (!vpage) {
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ehea_error("hw_qpageit_get_inc failed");
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goto out_kill_hwq;
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}
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rpage = virt_to_abs(vpage);
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hret = ehea_h_register_rpage(adapter->handle,
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0, EHEA_CQ_REGISTER_ORIG,
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cq->fw_handle, rpage, 1);
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if (hret < H_SUCCESS) {
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ehea_error("register_rpage_cq failed ehea_cq=%p "
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"hret=%lx counter=%i act_pages=%i",
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cq, hret, counter, cq->attr.nr_pages);
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goto out_kill_hwq;
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}
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if (counter == (cq->attr.nr_pages - 1)) {
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vpage = hw_qpageit_get_inc(&cq->hw_queue);
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if ((hret != H_SUCCESS) || (vpage)) {
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ehea_error("registration of pages not "
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"complete hret=%lx\n", hret);
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goto out_kill_hwq;
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}
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} else {
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if ((hret != H_PAGE_REGISTERED) || (!vpage)) {
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ehea_error("CQ: registration of page failed "
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"hret=%lx\n", hret);
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goto out_kill_hwq;
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}
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}
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}
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hw_qeit_reset(&cq->hw_queue);
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epa = cq->epas.kernel;
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ehea_reset_cq_ep(cq);
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ehea_reset_cq_n1(cq);
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return cq;
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out_kill_hwq:
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hw_queue_dtor(&cq->hw_queue);
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out_freeres:
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ehea_h_free_resource(adapter->handle, cq->fw_handle);
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out_freemem:
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kfree(cq);
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out_nomem:
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return NULL;
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}
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int ehea_destroy_cq(struct ehea_cq *cq)
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{
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u64 adapter_handle, hret;
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adapter_handle = cq->adapter->handle;
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if (!cq)
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return 0;
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/* deregister all previous registered pages */
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hret = ehea_h_free_resource(adapter_handle, cq->fw_handle);
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if (hret != H_SUCCESS) {
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ehea_error("destroy CQ failed");
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return -EIO;
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}
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hw_queue_dtor(&cq->hw_queue);
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kfree(cq);
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return 0;
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}
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struct ehea_eq *ehea_create_eq(struct ehea_adapter *adapter,
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const enum ehea_eq_type type,
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const u32 max_nr_of_eqes, const u8 eqe_gen)
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{
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int ret, i;
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u64 hret, rpage;
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void *vpage;
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struct ehea_eq *eq;
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eq = kzalloc(sizeof(*eq), GFP_KERNEL);
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if (!eq) {
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ehea_error("no mem for eq");
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return NULL;
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}
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eq->adapter = adapter;
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eq->attr.type = type;
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eq->attr.max_nr_of_eqes = max_nr_of_eqes;
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eq->attr.eqe_gen = eqe_gen;
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spin_lock_init(&eq->spinlock);
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hret = ehea_h_alloc_resource_eq(adapter->handle,
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&eq->attr, &eq->fw_handle);
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if (hret != H_SUCCESS) {
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ehea_error("alloc_resource_eq failed");
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goto out_freemem;
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}
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ret = hw_queue_ctor(&eq->hw_queue, eq->attr.nr_pages,
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EHEA_PAGESIZE, sizeof(struct ehea_eqe));
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if (ret) {
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ehea_error("can't allocate eq pages");
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goto out_freeres;
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}
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for (i = 0; i < eq->attr.nr_pages; i++) {
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vpage = hw_qpageit_get_inc(&eq->hw_queue);
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if (!vpage) {
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ehea_error("hw_qpageit_get_inc failed");
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hret = H_RESOURCE;
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goto out_kill_hwq;
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}
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rpage = virt_to_abs(vpage);
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hret = ehea_h_register_rpage(adapter->handle, 0,
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EHEA_EQ_REGISTER_ORIG,
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eq->fw_handle, rpage, 1);
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if (i == (eq->attr.nr_pages - 1)) {
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/* last page */
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vpage = hw_qpageit_get_inc(&eq->hw_queue);
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if ((hret != H_SUCCESS) || (vpage)) {
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goto out_kill_hwq;
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}
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} else {
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if ((hret != H_PAGE_REGISTERED) || (!vpage)) {
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goto out_kill_hwq;
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}
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}
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}
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hw_qeit_reset(&eq->hw_queue);
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return eq;
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out_kill_hwq:
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hw_queue_dtor(&eq->hw_queue);
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out_freeres:
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ehea_h_free_resource(adapter->handle, eq->fw_handle);
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out_freemem:
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kfree(eq);
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return NULL;
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}
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struct ehea_eqe *ehea_poll_eq(struct ehea_eq *eq)
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{
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struct ehea_eqe *eqe;
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unsigned long flags;
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spin_lock_irqsave(&eq->spinlock, flags);
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eqe = (struct ehea_eqe*)hw_eqit_eq_get_inc_valid(&eq->hw_queue);
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spin_unlock_irqrestore(&eq->spinlock, flags);
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return eqe;
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}
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int ehea_destroy_eq(struct ehea_eq *eq)
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{
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u64 hret;
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unsigned long flags;
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if (!eq)
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return 0;
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spin_lock_irqsave(&eq->spinlock, flags);
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hret = ehea_h_free_resource(eq->adapter->handle, eq->fw_handle);
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spin_unlock_irqrestore(&eq->spinlock, flags);
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if (hret != H_SUCCESS) {
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ehea_error("destroy_eq failed");
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return -EIO;
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}
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hw_queue_dtor(&eq->hw_queue);
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kfree(eq);
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return 0;
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}
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/**
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* allocates memory for a queue and registers pages in phyp
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*/
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int ehea_qp_alloc_register(struct ehea_qp *qp, struct hw_queue *hw_queue,
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int nr_pages, int wqe_size, int act_nr_sges,
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struct ehea_adapter *adapter, int h_call_q_selector)
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{
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u64 hret, rpage;
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int ret, cnt;
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void *vpage;
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ret = hw_queue_ctor(hw_queue, nr_pages, EHEA_PAGESIZE, wqe_size);
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if (ret)
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return ret;
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for (cnt = 0; cnt < nr_pages; cnt++) {
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vpage = hw_qpageit_get_inc(hw_queue);
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if (!vpage) {
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ehea_error("hw_qpageit_get_inc failed");
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goto out_kill_hwq;
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}
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rpage = virt_to_abs(vpage);
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hret = ehea_h_register_rpage(adapter->handle,
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0, h_call_q_selector,
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qp->fw_handle, rpage, 1);
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if (hret < H_SUCCESS) {
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ehea_error("register_rpage_qp failed");
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goto out_kill_hwq;
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}
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}
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hw_qeit_reset(hw_queue);
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return 0;
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out_kill_hwq:
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hw_queue_dtor(hw_queue);
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return -EIO;
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}
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static inline u32 map_wqe_size(u8 wqe_enc_size)
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{
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return 128 << wqe_enc_size;
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}
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struct ehea_qp *ehea_create_qp(struct ehea_adapter *adapter,
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u32 pd, struct ehea_qp_init_attr *init_attr)
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{
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int ret;
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u64 hret;
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struct ehea_qp *qp;
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u32 wqe_size_in_bytes_sq, wqe_size_in_bytes_rq1;
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u32 wqe_size_in_bytes_rq2, wqe_size_in_bytes_rq3;
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qp = kzalloc(sizeof(*qp), GFP_KERNEL);
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if (!qp) {
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ehea_error("no mem for qp");
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return NULL;
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}
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qp->adapter = adapter;
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hret = ehea_h_alloc_resource_qp(adapter->handle, init_attr, pd,
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&qp->fw_handle, &qp->epas);
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if (hret != H_SUCCESS) {
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ehea_error("ehea_h_alloc_resource_qp failed");
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goto out_freemem;
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}
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wqe_size_in_bytes_sq = map_wqe_size(init_attr->act_wqe_size_enc_sq);
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wqe_size_in_bytes_rq1 = map_wqe_size(init_attr->act_wqe_size_enc_rq1);
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wqe_size_in_bytes_rq2 = map_wqe_size(init_attr->act_wqe_size_enc_rq2);
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wqe_size_in_bytes_rq3 = map_wqe_size(init_attr->act_wqe_size_enc_rq3);
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ret = ehea_qp_alloc_register(qp, &qp->hw_squeue, init_attr->nr_sq_pages,
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wqe_size_in_bytes_sq,
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init_attr->act_wqe_size_enc_sq, adapter,
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0);
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if (ret) {
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ehea_error("can't register for sq ret=%x", ret);
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goto out_freeres;
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}
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|
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ret = ehea_qp_alloc_register(qp, &qp->hw_rqueue1,
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init_attr->nr_rq1_pages,
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wqe_size_in_bytes_rq1,
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init_attr->act_wqe_size_enc_rq1,
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adapter, 1);
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if (ret) {
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ehea_error("can't register for rq1 ret=%x", ret);
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goto out_kill_hwsq;
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}
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|
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if (init_attr->rq_count > 1) {
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ret = ehea_qp_alloc_register(qp, &qp->hw_rqueue2,
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init_attr->nr_rq2_pages,
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wqe_size_in_bytes_rq2,
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init_attr->act_wqe_size_enc_rq2,
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adapter, 2);
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if (ret) {
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ehea_error("can't register for rq2 ret=%x", ret);
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goto out_kill_hwr1q;
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}
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}
|
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|
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if (init_attr->rq_count > 2) {
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ret = ehea_qp_alloc_register(qp, &qp->hw_rqueue3,
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init_attr->nr_rq3_pages,
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wqe_size_in_bytes_rq3,
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init_attr->act_wqe_size_enc_rq3,
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adapter, 3);
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if (ret) {
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ehea_error("can't register for rq3 ret=%x", ret);
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goto out_kill_hwr2q;
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}
|
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}
|
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|
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qp->init_attr = *init_attr;
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|
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return qp;
|
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|
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out_kill_hwr2q:
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hw_queue_dtor(&qp->hw_rqueue2);
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|
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out_kill_hwr1q:
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hw_queue_dtor(&qp->hw_rqueue1);
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|
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out_kill_hwsq:
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hw_queue_dtor(&qp->hw_squeue);
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out_freeres:
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ehea_h_disable_and_get_hea(adapter->handle, qp->fw_handle);
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ehea_h_free_resource(adapter->handle, qp->fw_handle);
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out_freemem:
|
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kfree(qp);
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return NULL;
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}
|
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|
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int ehea_destroy_qp(struct ehea_qp *qp)
|
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{
|
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u64 hret;
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struct ehea_qp_init_attr *qp_attr = &qp->init_attr;
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|
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if (!qp)
|
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return 0;
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|
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hret = ehea_h_free_resource(qp->adapter->handle, qp->fw_handle);
|
|
if (hret != H_SUCCESS) {
|
|
ehea_error("destroy_qp failed");
|
|
return -EIO;
|
|
}
|
|
|
|
hw_queue_dtor(&qp->hw_squeue);
|
|
hw_queue_dtor(&qp->hw_rqueue1);
|
|
|
|
if (qp_attr->rq_count > 1)
|
|
hw_queue_dtor(&qp->hw_rqueue2);
|
|
if (qp_attr->rq_count > 2)
|
|
hw_queue_dtor(&qp->hw_rqueue3);
|
|
kfree(qp);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int ehea_reg_mr_adapter(struct ehea_adapter *adapter)
|
|
{
|
|
int i, k, ret;
|
|
u64 hret, pt_abs, start, end, nr_pages;
|
|
u32 acc_ctrl = EHEA_MR_ACC_CTRL;
|
|
u64 *pt;
|
|
|
|
start = KERNELBASE;
|
|
end = (u64)high_memory;
|
|
nr_pages = (end - start) / PAGE_SIZE;
|
|
|
|
pt = kzalloc(PAGE_SIZE, GFP_KERNEL);
|
|
if (!pt) {
|
|
ehea_error("no mem");
|
|
ret = -ENOMEM;
|
|
goto out;
|
|
}
|
|
pt_abs = virt_to_abs(pt);
|
|
|
|
hret = ehea_h_alloc_resource_mr(adapter->handle, start, end - start,
|
|
acc_ctrl, adapter->pd,
|
|
&adapter->mr.handle, &adapter->mr.lkey);
|
|
if (hret != H_SUCCESS) {
|
|
ehea_error("alloc_resource_mr failed");
|
|
ret = -EIO;
|
|
goto out;
|
|
}
|
|
|
|
adapter->mr.vaddr = KERNELBASE;
|
|
k = 0;
|
|
|
|
while (nr_pages > 0) {
|
|
if (nr_pages > 1) {
|
|
u64 num_pages = min(nr_pages, (u64)512);
|
|
for (i = 0; i < num_pages; i++)
|
|
pt[i] = virt_to_abs((void*)(((u64)start)
|
|
+ ((k++) *
|
|
PAGE_SIZE)));
|
|
|
|
hret = ehea_h_register_rpage_mr(adapter->handle,
|
|
adapter->mr.handle, 0,
|
|
0, (u64)pt_abs,
|
|
num_pages);
|
|
nr_pages -= num_pages;
|
|
} else {
|
|
u64 abs_adr = virt_to_abs((void*)(((u64)start)
|
|
+ (k * PAGE_SIZE)));
|
|
hret = ehea_h_register_rpage_mr(adapter->handle,
|
|
adapter->mr.handle, 0,
|
|
0, abs_adr,1);
|
|
nr_pages--;
|
|
}
|
|
|
|
if ((hret != H_SUCCESS) && (hret != H_PAGE_REGISTERED)) {
|
|
ehea_h_free_resource(adapter->handle,
|
|
adapter->mr.handle);
|
|
ehea_error("register_rpage_mr failed: hret = %lX",
|
|
hret);
|
|
ret = -EIO;
|
|
goto out;
|
|
}
|
|
}
|
|
|
|
if (hret != H_SUCCESS) {
|
|
ehea_h_free_resource(adapter->handle, adapter->mr.handle);
|
|
ehea_error("register_rpage failed for last page: hret = %lX",
|
|
hret);
|
|
ret = -EIO;
|
|
goto out;
|
|
}
|
|
ret = 0;
|
|
out:
|
|
kfree(pt);
|
|
return ret;
|
|
}
|
|
|
|
|