From ceb96398127f3388cb5815b2ab550196e2be5d68 Mon Sep 17 00:00:00 2001 From: Alexandre Bounine Date: Thu, 8 Dec 2011 14:34:35 -0800 Subject: rapidio/tsi721: switch to dma_zalloc_coherent Replace the pair dma_alloc_coherent()+memset() with the new dma_zalloc_coherent() added by Andrew Morton for kernel version 3.2 Signed-off-by: Alexandre Bounine Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/rapidio/devices/tsi721.c | 17 ++++------------- 1 file changed, 4 insertions(+), 13 deletions(-) (limited to 'drivers/rapidio/devices/tsi721.c') diff --git a/drivers/rapidio/devices/tsi721.c b/drivers/rapidio/devices/tsi721.c index 5225930a10cd..514c28c81420 100644 --- a/drivers/rapidio/devices/tsi721.c +++ b/drivers/rapidio/devices/tsi721.c @@ -851,14 +851,12 @@ static int tsi721_doorbell_init(struct tsi721_device *priv) INIT_WORK(&priv->idb_work, tsi721_db_dpc); /* Allocate buffer for inbound doorbells queue */ - priv->idb_base = dma_alloc_coherent(&priv->pdev->dev, + priv->idb_base = dma_zalloc_coherent(&priv->pdev->dev, IDB_QSIZE * TSI721_IDB_ENTRY_SIZE, &priv->idb_dma, GFP_KERNEL); if (!priv->idb_base) return -ENOMEM; - memset(priv->idb_base, 0, IDB_QSIZE * TSI721_IDB_ENTRY_SIZE); - dev_dbg(&priv->pdev->dev, "Allocated IDB buffer @ %p (phys = %llx)\n", priv->idb_base, (unsigned long long)priv->idb_dma); @@ -904,7 +902,7 @@ static int tsi721_bdma_ch_init(struct tsi721_device *priv, int chnum) */ /* Allocate space for DMA descriptors */ - bd_ptr = dma_alloc_coherent(&priv->pdev->dev, + bd_ptr = dma_zalloc_coherent(&priv->pdev->dev, bd_num * sizeof(struct tsi721_dma_desc), &bd_phys, GFP_KERNEL); if (!bd_ptr) @@ -913,8 +911,6 @@ static int tsi721_bdma_ch_init(struct tsi721_device *priv, int chnum) priv->bdma[chnum].bd_phys = bd_phys; priv->bdma[chnum].bd_base = bd_ptr; - memset(bd_ptr, 0, bd_num * sizeof(struct tsi721_dma_desc)); - dev_dbg(&priv->pdev->dev, "DMA descriptors @ %p (phys = %llx)\n", bd_ptr, (unsigned long long)bd_phys); @@ -922,7 +918,7 @@ static int tsi721_bdma_ch_init(struct tsi721_device *priv, int chnum) sts_size = (bd_num >= TSI721_DMA_MINSTSSZ) ? bd_num : TSI721_DMA_MINSTSSZ; sts_size = roundup_pow_of_two(sts_size); - sts_ptr = dma_alloc_coherent(&priv->pdev->dev, + sts_ptr = dma_zalloc_coherent(&priv->pdev->dev, sts_size * sizeof(struct tsi721_dma_sts), &sts_phys, GFP_KERNEL); if (!sts_ptr) { @@ -938,8 +934,6 @@ static int tsi721_bdma_ch_init(struct tsi721_device *priv, int chnum) priv->bdma[chnum].sts_base = sts_ptr; priv->bdma[chnum].sts_size = sts_size; - memset(sts_ptr, 0, sts_size); - dev_dbg(&priv->pdev->dev, "desc status FIFO @ %p (phys = %llx) size=0x%x\n", sts_ptr, (unsigned long long)sts_phys, sts_size); @@ -1400,7 +1394,7 @@ static int tsi721_open_outb_mbox(struct rio_mport *mport, void *dev_id, /* Outbound message descriptor status FIFO allocation */ priv->omsg_ring[mbox].sts_size = roundup_pow_of_two(entries + 1); - priv->omsg_ring[mbox].sts_base = dma_alloc_coherent(&priv->pdev->dev, + priv->omsg_ring[mbox].sts_base = dma_zalloc_coherent(&priv->pdev->dev, priv->omsg_ring[mbox].sts_size * sizeof(struct tsi721_dma_sts), &priv->omsg_ring[mbox].sts_phys, GFP_KERNEL); @@ -1412,9 +1406,6 @@ static int tsi721_open_outb_mbox(struct rio_mport *mport, void *dev_id, goto out_desc; } - memset(priv->omsg_ring[mbox].sts_base, 0, - entries * sizeof(struct tsi721_dma_sts)); - /* * Configure Outbound Messaging Engine */ -- cgit v1.2.3 From b439e66f04bff6476c5d4bae6a52ab93fbb9a8f4 Mon Sep 17 00:00:00 2001 From: Alexandre Bounine Date: Thu, 8 Dec 2011 14:34:36 -0800 Subject: rapidio/tsi721: fix mailbox resource reporting Bug fix for Tsi721 RapidIO mport driver: Tsi721 supports four RapidIO mailboxes (MBOX0 - MBOX3) as defined by RapidIO specification. Mailbox resources has to be properly reported to allow use of all available mailboxes (initial version reports only MBOX0). This patch is applicable to kernel versions staring from 3.2-rc1. Signed-off-by: Alexandre Bounine Cc: Matt Porter Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/rapidio/devices/tsi721.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'drivers/rapidio/devices/tsi721.c') diff --git a/drivers/rapidio/devices/tsi721.c b/drivers/rapidio/devices/tsi721.c index 514c28c81420..83ac8728b781 100644 --- a/drivers/rapidio/devices/tsi721.c +++ b/drivers/rapidio/devices/tsi721.c @@ -2107,8 +2107,8 @@ static int __devinit tsi721_setup_mport(struct tsi721_device *priv) INIT_LIST_HEAD(&mport->dbells); rio_init_dbell_res(&mport->riores[RIO_DOORBELL_RESOURCE], 0, 0xffff); - rio_init_mbox_res(&mport->riores[RIO_INB_MBOX_RESOURCE], 0, 0); - rio_init_mbox_res(&mport->riores[RIO_OUTB_MBOX_RESOURCE], 0, 0); + rio_init_mbox_res(&mport->riores[RIO_INB_MBOX_RESOURCE], 0, 3); + rio_init_mbox_res(&mport->riores[RIO_OUTB_MBOX_RESOURCE], 0, 3); strcpy(mport->name, "Tsi721 mport"); /* Hook up interrupt handler */ -- cgit v1.2.3 From 1cee22b7f385b6c4f716846203a96e1f302132aa Mon Sep 17 00:00:00 2001 From: Alexandre Bounine Date: Thu, 8 Dec 2011 14:34:42 -0800 Subject: rapidio/tsi721: modify PCIe capability settings Modify initialization of PCIe capability registers in Tsi721 mport driver: - change Completion Timeout value to avoid unexpected data transfer aborts during intensive traffic. - replace hardcoded offset of PCIe capability block by making it use the common function. This patch is applicable to kernel versions starting from 3.2-rc1. Signed-off-by: Alexandre Bounine Cc: Matt Porter Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/rapidio/devices/tsi721.c | 20 +++++++++++++++----- drivers/rapidio/devices/tsi721.h | 2 ++ 2 files changed, 17 insertions(+), 5 deletions(-) (limited to 'drivers/rapidio/devices/tsi721.c') diff --git a/drivers/rapidio/devices/tsi721.c b/drivers/rapidio/devices/tsi721.c index 83ac8728b781..691b1ab1a3d0 100644 --- a/drivers/rapidio/devices/tsi721.c +++ b/drivers/rapidio/devices/tsi721.c @@ -2154,7 +2154,7 @@ static int __devinit tsi721_probe(struct pci_dev *pdev, const struct pci_device_id *id) { struct tsi721_device *priv; - int i; + int i, cap; int err; u32 regval; @@ -2262,10 +2262,20 @@ static int __devinit tsi721_probe(struct pci_dev *pdev, dev_info(&pdev->dev, "Unable to set consistent DMA mask\n"); } - /* Clear "no snoop" and "relaxed ordering" bits. */ - pci_read_config_dword(pdev, 0x40 + PCI_EXP_DEVCTL, ®val); - regval &= ~(PCI_EXP_DEVCTL_RELAX_EN | PCI_EXP_DEVCTL_NOSNOOP_EN); - pci_write_config_dword(pdev, 0x40 + PCI_EXP_DEVCTL, regval); + cap = pci_pcie_cap(pdev); + BUG_ON(cap == 0); + + /* Clear "no snoop" and "relaxed ordering" bits, use default MRRS. */ + pci_read_config_dword(pdev, cap + PCI_EXP_DEVCTL, ®val); + regval &= ~(PCI_EXP_DEVCTL_READRQ | PCI_EXP_DEVCTL_RELAX_EN | + PCI_EXP_DEVCTL_NOSNOOP_EN); + regval |= 0x2 << MAX_READ_REQUEST_SZ_SHIFT; + pci_write_config_dword(pdev, cap + PCI_EXP_DEVCTL, regval); + + /* Adjust PCIe completion timeout. */ + pci_read_config_dword(pdev, cap + PCI_EXP_DEVCTL2, ®val); + regval &= ~(0x0f); + pci_write_config_dword(pdev, cap + PCI_EXP_DEVCTL2, regval | 0x2); /* * FIXUP: correct offsets of MSI-X tables in the MSI-X Capability Block diff --git a/drivers/rapidio/devices/tsi721.h b/drivers/rapidio/devices/tsi721.h index 58be4deb1402..822e54c394d5 100644 --- a/drivers/rapidio/devices/tsi721.h +++ b/drivers/rapidio/devices/tsi721.h @@ -72,6 +72,8 @@ #define TSI721_MSIXPBA_OFFSET 0x2a000 #define TSI721_PCIECFG_EPCTL 0x400 +#define MAX_READ_REQUEST_SZ_SHIFT 12 + /* * Event Management Registers */ -- cgit v1.2.3