- kernel-russian@kernelnewbies.org - Kernelnewbies Mailing Lists

[PATCH 1/2] introduced some necessary read/write csr/bcr functions
by Dmitry Podgorny May 19, 2011

May 19, 2011

--- src/pcnet.c | 88 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 files changed, 88 insertions(+), 0 deletions(-) diff --git a/src/pcnet.c b/src/pcnet.c index c2f9731..480a67f 100644 --- a/src/pcnet.c +++ b/src/pcnet.c @@ -33,6 +33,64 @@ enum { PCNET_IOSIZE_LEN = 0x20, }; +enum { + PCNET_IO_PROM = 0x0, + PCNET_IO_RDP = 0x10, + PCNET_IO_RAP = 0x12, + PCNET_IO_RESET = 0x14, + PCNET_IO_BDP = 0x16, +}; + +enum { + PCNET_IO32_PROM = 0x0, + PCNET_IO32_RDP = 0x10, + PCNET_IO32_RAP = 0x14, + PCNET_IO32_RESET = 0x18, + PCNET_IO32_BDP = 0x1c, +}; + +enum { + CSR0 = 0, + CSR1 = 1, + CSR2 = 2, + CSR4 = 4, + CSR15 = 15, + /* missed frame count */ + CSR112 = 112, +}; + +enum { + BCR18 = 18, +}; + +enum { + CSR0_INIT = 0x0001, + CSR0_START= 0x0002, + CSR0_STOP = 0x0004, + /* transmit demand */ + CSR0_TDMD = 0x0008, + /* transmitter on */ + CSR0_TXON = 0x0010, + /* receiver on */ + CSR0_RXON = 0x0020, + /* interrupt enable */ + CSR0_IENA = 0x0040, + CSR0_INTR = 0x0080, + /* initialisation done */ + CSR0_IDON = 0x0100, + CSR0_TINT = 0x0200, + CSR0_RINT = 0x0400, + CSR0_MERR = 0x0800, + CSR0_MISS = 0x1000, + CSR0_CERR = 0x2000, + CSR0_BABL = 0x4000, + CSR0_ERR = 0x8000, +}; + +enum { + BCR18_DWIO = 0x0080, +}; + /* PCnet-PCI II controller initialization includes the reading * of the initialization block in memory to obtain the operat- * ing parameters. @@ -94,6 +152,36 @@ struct pcnet_dummy_private { void __iomem *base; }; +static unsigned short pcnet_dummy_csr_read16(void __iomem *ioaddr, + unsigned short csr) +{ + iowrite16(csr, ioaddr + PCNET_IO_RAP); + return ioread16(ioaddr + PCNET_IO_RDP); +} + +static unsigned long pcnet_dummy_csr_read32(void __iomem *ioaddr, + unsigned long csr) +{ + iowrite32(csr, ioaddr + PCNET_IO32_RAP); + /* 16 most significant bits are undefined */ + return ioread32(ioaddr + PCNET_IO32_RDP) & 0xffff; +} + +static void pcnet_dummy_csr_write32(void __iomem *ioaddr, + unsigned long data, unsigned long csr) +{ + iowrite32(csr, ioaddr + PCNET_IO32_RAP); + iowrite32(data, ioaddr + PCNET_IO32_RDP); +} + +static unsigned long pcnet_dummy_bcr_read32(void __iomem *ioaddr, + unsigned long bcr) +{ + iowrite32(bcr, ioaddr + PCNET_IO32_RAP); + /* 16 most significant bits are undefined */ + return ioread32(ioaddr + PCNET_IO32_BDP) & 0xffff; +} + static int pcnet_dummy_open(struct net_device *ndev) { return 0; -- 1.7.5.rc3

1 2

[PATCH] fixed crash while module unloading
by Dmitry Podgorny May 19, 2011

May 19, 2011

--- src/pcnet.c | 1 + 1 files changed, 1 insertions(+), 0 deletions(-) diff --git a/src/pcnet.c b/src/pcnet.c index 4ee9ecd..bb8f357 100644 --- a/src/pcnet.c +++ b/src/pcnet.c @@ -130,6 +130,7 @@ static int __devinit pcnet_dummy_init_netdev(struct pci_dev *pdev, ndev->base_addr = ioaddr; ndev->irq = irq; pp->pci_dev = pdev; + pp->base = (void *)ioaddr; spin_lock_init(&pp->lock); /* init DMA rings */ -- 1.7.5.rc3

1 1

представимся?
by Alex Naumov April 22, 2011

April 22, 2011

Всем привет. Активность рассылки переживает не самые лучше времена :) Мне интересно, кто подписан на рассылку. Сколько человек. Может представимся, расскажем что-то о себе? Думаю, что узнав друг друга получше, будет легче начать новое обсуждение ;) С уважением, Alex

7 11

Re: представимся?
by Alex Naumov April 17, 2011

April 17, 2011

2011/4/17 Андрей Найдин <naydinav(a)gmail.com> > > Привет Всем. Меня зовутАндрей. ассистент кафедры технологий > программирования в универе по месту жительства. Веду курс "Операционные > системы". Так же интересы затрагивают область "встраиваемые системы". > > Привет, Андрей. Я был уверен, что на рассылку подписанно больше людей, чем нам известно. Нас уже как минимум 4 =)

2 1

Cтатья
by Denis Kirjanov Dec. 1, 2010

Dec. 1, 2010

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Всем привет, доступна новая статься - "Сетвой стек в Linux: введение (SKBs)" http://ru.kernelnewbies.org/node/54 - -- "I vote for: - -> Exception: 401 (Instruction Access) at 00000000f7937794 Because exceptions are like an arrow!" - -- Michael Ellerman -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.10 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iQEcBAEBAgAGBQJM9fl+AAoJEMzN0iEaDJKmG30H/1dV3bKwq+2C5iX9fr6nxiNK oeJa2RCXU6NEL0Sf8L0LxqtT4JqosZV/XLh+3RuvU0UD22SCtMdKgHp1lJQDgDFe Ug/aMVY4CSIKHy9iDIKGE/+e3Zc1gXRHWBee1b0IJhz/fC89MinpeNU1QJS/CtTp QVmUMusTxxijvuv03dxl/aHjm2m07wA94qLqf7DeiPoUfC+dvBok1pSCavF9ysD/ MUU4sSO0VvSysu8W4Qhvb3fo+ok86XBheVtL0wfJ5hiOV+WItRNBVjY7omFWxvOW GMpju+psJFjFTirz5rlG+cjUYmuIyO33ElJYTw7ezKfpqx+EF1bjuxcZON8obBI= =AjyD -----END PGP SIGNATURE-----

2 1

New article
by Denis Kirjanov Dec. 1, 2010

Dec. 1, 2010

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ???? ??????, ???????? ????? ??????? - "?????? ???? ? Linux: ???????? (SKBs)" http://ru.kernelnewbies.org/node/54 - -- "I vote for: - -> Exception: 401 (Instruction Access) at 00000000f7937794 Because exceptions are like an arrow!" - -- Michael Ellerman -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.10 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iQEcBAEBAgAGBQJM9g92AAoJEMzN0iEaDJKms30H/1SJbxl5IncXVMAGUVzGXOwi RprFBlXu2p7GxLq0wqbyY/cQjszgltVo69jbv2xtiwCEHhef131h82XexPg3aZ8A Z7ybZx4ua9/446w0migM1Os2diIiNFLNnDBl9Eh0Y/xf1G62EbLX6XTNIxm4MBuT R5GHhP9LzdH16t71WxVdPwgeZHRmpvCP3dhjku777SB2QchqjIukYlMcaiodM3Gx jsLeWm++sAFOqAOa0jUUZ7zdFyFJJKDbiTYIlyUT3od8OVi6M1SN8aA081ZUW/N5 uybhMj6eZH4q2nU0nPmvRxFUP53cmJOAlLYNydktXri4Hddk5cVk4jp4tnejx6A= =NSL+ -----END PGP SIGNATURE-----

1 0

временно offline
by Alex Naumov Nov. 30, 2010

Nov. 30, 2010

Портал временно не доступен. Приношу свои извинения за неудобства. Рассылка все же работает :)

1 0

sys_open() или fork() на x86_64 ?
by Alex Naumov Nov. 28, 2010

Nov. 28, 2010

Всем привет Я создал тему на форуме, возможно у кого-то есть идеи по этому поводу? http://ru.kernelnewbies.org/node/53 С уважением, Alex

1 0

[PATCH] Introduce DMA xmit descriptor
by Denis Kirjanov Sept. 25, 2010

Sept. 25, 2010

Signed-off-by: Denis Kirjanov <kirjanov(a)gmail.com> --- >From datasheet TX/RX descriptors are very similar. I think that we can merge TX/RX in to one xmit descriptor. In this case we shoud use some kind of accessors to different fields. Any suggestions? Thanks! diff --git a/src/pcnet.c b/src/pcnet.c index 5a3e639..97acc7e 100644 --- a/src/pcnet.c +++ b/src/pcnet.c @@ -71,6 +71,20 @@ struct pcnet_dummy_init_block { __le32 tx_ring; } __attribute__ ((__packed__)); +/* 32bit TX/RX descriptors */ +/* PCnet Software Design Considerations, p.5 */ +struct xmit_descr { + __le32 addr; + /* The BCNT fields of the transmit and receive descriptors + * are 12-bit negative numbers representing the twos com- + * plement of the buffer size in bytes + */ + __le16 size; + __le16 status; + __le32 flags; + __le32 reserved; +}; + struct pcnet_private { /* TODO: * DMA buffer management operations

2 1

(no subject)
by Denis Kirjanov Sept. 24, 2010

Sept. 24, 2010

Signed-off-by: Denis Kirjanov <kirjanov(a)gmail.com> --- >From datasheet TX/RX descriptors are very similar. I think that we can merge TX/RX in to one xmit descriptor. In this case we shoud use some kind of accessors to different fields. Any suggestions? Thanks! diff --git a/src/pcnet.c b/src/pcnet.c index 5a3e639..97acc7e 100644 --- a/src/pcnet.c +++ b/src/pcnet.c @@ -71,6 +71,20 @@ struct pcnet_dummy_init_block { __le32 tx_ring; } __attribute__ ((__packed__)); +/* 32bit TX/RX descriptors */ +/* PCnet Software Design Considerations, p.5 */ +struct xmit_descr { + __le32 addr; + /* The BCNT fields of the transmit and receive descriptors + * are 12-bit negative numbers representing the twos com- + * plement of the buffer size in bytes + */ + __le16 size; + __le16 status; + __le32 flags; + __le32 reserved; +}; + struct pcnet_private { /* TODO: * DMA buffer management operations

1 0