Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755171AbZFKR2i (ORCPT ); Thu, 11 Jun 2009 13:28:38 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753298AbZFKR2Z (ORCPT ); Thu, 11 Jun 2009 13:28:25 -0400 Received: from d112a2.x-mailer.de ([212.162.53.4]:60861 "EHLO d112a2.x-mailer.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753429AbZFKR2Z (ORCPT ); Thu, 11 Jun 2009 13:28:25 -0400 Message-Id: <8a745b9d91962991ce87a649a4dc3af3206c2c8b.1244739994.git.keil@b1-systems.de> In-Reply-To: References: Date: Tue, 2 Jun 2009 14:57:35 +0200 Subject: [PATCH 1/6] ISDN:Fix DMA alloc for hfcpci From: Karsten Keil To: linux-kernel@vger.kernel.org Cc: netdev@vger.kernel.org, David Miller , i4ldeveloper@listserv.isdn4linux.de X-Info: valid message X-Info: original Date Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 4104 Lines: 104 Replace wrong code with correct DMA API functions. Signed-off-by: Karsten Keil --- drivers/isdn/hisax/hfc_pci.c | 41 ++++++++++++++++++++++++++++++----------- drivers/isdn/hisax/hisax.h | 2 +- 2 files changed, 31 insertions(+), 12 deletions(-) diff --git a/drivers/isdn/hisax/hfc_pci.c b/drivers/isdn/hisax/hfc_pci.c index f126566..3d337d9 100644 --- a/drivers/isdn/hisax/hfc_pci.c +++ b/drivers/isdn/hisax/hfc_pci.c @@ -82,8 +82,9 @@ release_io_hfcpci(struct IsdnCardState *cs) Write_hfc(cs, HFCPCI_INT_M2, cs->hw.hfcpci.int_m2); pci_write_config_word(cs->hw.hfcpci.dev, PCI_COMMAND, 0); /* disable memory mapped ports + busmaster */ del_timer(&cs->hw.hfcpci.timer); - kfree(cs->hw.hfcpci.share_start); - cs->hw.hfcpci.share_start = NULL; + pci_free_consistent(cs->hw.hfcpci.dev, 0x8000, + cs->hw.hfcpci.fifos, cs->hw.hfcpci.dma); + cs->hw.hfcpci.fifos = NULL; iounmap((void *)cs->hw.hfcpci.pci_io); } @@ -1663,8 +1664,19 @@ setup_hfcpci(struct IsdnCard *card) dev_hfcpci); i++; if (tmp_hfcpci) { + dma_addr_t dma_mask = DMA_BIT_MASK(32) & ~0x7fffUL; if (pci_enable_device(tmp_hfcpci)) continue; + if (pci_set_dma_mask(tmp_hfcpci, dma_mask)) { + printk(KERN_WARNING + "HiSax hfc_pci: No suitable DMA available.\n"); + continue; + } + if (pci_set_consistent_dma_mask(tmp_hfcpci, dma_mask)) { + printk(KERN_WARNING + "HiSax hfc_pci: No suitable consistent DMA available.\n"); + continue; + } pci_set_master(tmp_hfcpci); if ((card->para[0]) && (card->para[0] != (tmp_hfcpci->resource[ 0].start & PCI_BASE_ADDRESS_IO_MASK))) continue; @@ -1693,22 +1705,29 @@ setup_hfcpci(struct IsdnCard *card) printk(KERN_WARNING "HFC-PCI: No IO-Mem for PCI card found\n"); return (0); } + /* Allocate memory for FIFOS */ - /* Because the HFC-PCI needs a 32K physical alignment, we */ - /* need to allocate the double mem and align the address */ - if (!(cs->hw.hfcpci.share_start = kmalloc(65536, GFP_KERNEL))) { - printk(KERN_WARNING "HFC-PCI: Error allocating memory for FIFO!\n"); + cs->hw.hfcpci.fifos = pci_alloc_consistent(cs->hw.hfcpci.dev, + 0x8000, &cs->hw.hfcpci.dma); + if (!cs->hw.hfcpci.fifos) { + printk(KERN_WARNING "HFC-PCI: Error allocating FIFO memory!\n"); + return 0; + } + if (cs->hw.hfcpci.dma & 0x7fff) { + printk(KERN_WARNING + "HFC-PCI: Error DMA memory not on 32K boundary (%lx)\n", + (u_long)cs->hw.hfcpci.dma); + pci_free_consistent(cs->hw.hfcpci.dev, 0x8000, + cs->hw.hfcpci.fifos, cs->hw.hfcpci.dma); return 0; } - cs->hw.hfcpci.fifos = (void *) - (((ulong) cs->hw.hfcpci.share_start) & ~0x7FFF) + 0x8000; - pci_write_config_dword(cs->hw.hfcpci.dev, 0x80, (u_int) virt_to_bus(cs->hw.hfcpci.fifos)); + pci_write_config_dword(cs->hw.hfcpci.dev, 0x80, (u32)cs->hw.hfcpci.dma); cs->hw.hfcpci.pci_io = ioremap((ulong) cs->hw.hfcpci.pci_io, 256); printk(KERN_INFO - "HFC-PCI: defined at mem %p fifo %p(%#x) IRQ %d HZ %d\n", + "HFC-PCI: defined at mem %p fifo %p(%lx) IRQ %d HZ %d\n", cs->hw.hfcpci.pci_io, cs->hw.hfcpci.fifos, - (u_int) virt_to_bus(cs->hw.hfcpci.fifos), + (u_long)cs->hw.hfcpci.dma, cs->irq, HZ); spin_lock_irqsave(&cs->lock, flags); diff --git a/drivers/isdn/hisax/hisax.h b/drivers/isdn/hisax/hisax.h index f852704..0685c19 100644 --- a/drivers/isdn/hisax/hisax.h +++ b/drivers/isdn/hisax/hisax.h @@ -703,7 +703,7 @@ struct hfcPCI_hw { int nt_timer; struct pci_dev *dev; unsigned char *pci_io; /* start of PCI IO memory */ - void *share_start; /* shared memory for Fifos start */ + dma_addr_t dma; /* dma handle for Fifos */ void *fifos; /* FIFO memory */ int last_bfifo_cnt[2]; /* marker saving last b-fifo frame count */ struct timer_list timer; -- 1.6.0.2 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/