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From: Natanael Copa <ncopa@alpinelinux.org>
To: dev@dpdk.org
Cc: Natanael Copa <ncopa@alpinelinux.org>
Subject: [dpdk-dev] [PATCH v2 03/15] bus/pci: add fallback for out[lwb]_p for non GNU libc
Date: Tue, 12 Mar 2019 11:16:30 +0100	[thread overview]
Message-ID: <20190312101630.18250-1-ncopa@alpinelinux.org> (raw)
In-Reply-To: <20190311173702.24471-4-ncopa@alpinelinux.org>

Add a fallback for non-GNU libc systems like musl libc for the
non-standard functions  outl_p, outw_p and outb_p.

This ifixes the following buildtime errors when building with musl libc:
pci_uio.c:(.text+0xaa1): undefined reference to `outw_p'
pci_uio.c:(.text+0xac5): undefined reference to `outl_p'
pci_uio.c:(.text+0xadf): undefined reference to `outb_p'

fixes https://bugs.dpdk.org/show_bug.cgi?id=35

Signed-off-by: Natanael Copa <ncopa@alpinelinux.org>
---

v2 - fixed coding style issues reported by checkpatch

 drivers/bus/pci/linux/pci_uio.c | 32 +++++++++++++++++++++++++++++---
 1 file changed, 29 insertions(+), 3 deletions(-)

diff --git a/drivers/bus/pci/linux/pci_uio.c b/drivers/bus/pci/linux/pci_uio.c
index 09ecbb7aa..e1dd8c875 100644
--- a/drivers/bus/pci/linux/pci_uio.c
+++ b/drivers/bus/pci/linux/pci_uio.c
@@ -14,6 +14,32 @@
 
 #if defined(RTE_ARCH_X86)
 #include <sys/io.h>
+#if defined(__GLIBC__)
+#define pci_uio_outl_p outl_p
+#define pci_uio_outw_p outw_p
+#define pci_uio_outb_p outb_p
+#else
+static inline void
+pci_uio_outl_p(unsigned int value, unsigned short int port)
+{
+	__asm__ __volatile__ ("outl %0,%w1\noutb %%al,$0x80" : : "a" (value),
+			      "Nd" (port));
+}
+
+static inline void
+pci_uio_outw_p(unsigned short int value, unsigned short int port)
+{
+	__asm__ __volatile__ ("outw %w0,%w1\noutb %%al,$0x80" : : "a" (value),
+			      "Nd" (port));
+}
+
+static inline void
+pci_uio_outb_p(unsigned char value, unsigned short int port)
+{
+	__asm__ __volatile__ ("outb %b0,%w1\noutb %%al,$0x80" : : "a" (value),
+			      "Nd" (port));
+}
+#endif
 #endif
 
 #include <rte_log.h>
@@ -527,21 +553,21 @@ pci_uio_ioport_write(struct rte_pci_ioport *p,
 		if (len >= 4) {
 			size = 4;
 #if defined(RTE_ARCH_X86)
-			outl_p(*(const uint32_t *)s, reg);
+			pci_uio_outl_p(*(const uint32_t *)s, reg);
 #else
 			*(volatile uint32_t *)reg = *(const uint32_t *)s;
 #endif
 		} else if (len >= 2) {
 			size = 2;
 #if defined(RTE_ARCH_X86)
-			outw_p(*(const uint16_t *)s, reg);
+			pci_uio_outw_p(*(const uint16_t *)s, reg);
 #else
 			*(volatile uint16_t *)reg = *(const uint16_t *)s;
 #endif
 		} else {
 			size = 1;
 #if defined(RTE_ARCH_X86)
-			outb_p(*s, reg);
+			pci_uio_outb_p(*s, reg);
 #else
 			*(volatile uint8_t *)reg = *s;
 #endif
-- 
2.21.0

  reply	other threads:[~2019-03-12 10:16 UTC|newest]

Thread overview: 26+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-03-11 17:36 [dpdk-dev] [PATCH 00/15] Build fixes for musl libc Natanael Copa
2019-03-11 17:36 ` [dpdk-dev] [PATCH 01/15] app/testpmd: replace uint with unsigned int Natanael Copa
2019-03-11 17:36 ` [dpdk-dev] [PATCH 02/15] net/cxgbe: " Natanael Copa
2019-03-11 17:36 ` [dpdk-dev] [PATCH 03/15] bus/pci: add fallback for out[lwb]_p for non GNU libc Natanael Copa
2019-03-12 10:16   ` Natanael Copa [this message]
2019-03-13 11:13     ` [dpdk-dev] [PATCH v2 " Ferruh Yigit
2019-03-13 17:08       ` Natanael Copa
2019-03-11 17:36 ` [dpdk-dev] [PATCH 04/15] bus/pci: factor out various ifdefs in pci_uio_ioport_{read, write} Natanael Copa
2019-03-12 10:18   ` [dpdk-dev] [PATCH v2 " Natanael Copa
2019-03-11 17:36 ` [dpdk-dev] [PATCH 05/15] bus/fslmc: fix compile error with musl libc Natanael Copa
2019-03-11 17:36 ` [dpdk-dev] [PATCH 06/15] bus/fslmc: remove unused include of error.h Natanael Copa
2019-03-11 17:36 ` [dpdk-dev] [PATCH 07/15] net/nfp: build fix for musl libc Natanael Copa
2019-03-11 17:36 ` [dpdk-dev] [PATCH 08/15] app/test: include fcntl.h due to use of O_RDONLY Natanael Copa
2019-03-11 17:36 ` [dpdk-dev] [PATCH 09/15] app/test: fix setting of -D_GNU_SOURCE with meson Natanael Copa
2019-03-11 17:36 ` [dpdk-dev] [PATCH 10/15] bus/dpaa: use warn(3) instead of error(3) to improve portability Natanael Copa
2019-03-11 17:36 ` [dpdk-dev] [PATCH 11/15] bus/dpaa: fix warning: "__WORDSIZE" is not defined, evaluates to 0 Natanael Copa
2019-03-11 17:36 ` [dpdk-dev] [PATCH 12/15] crypto/dpaa2_sec: build fix for musl libc Natanael Copa
2019-03-12 10:20   ` [dpdk-dev] [PATCH v2 " Natanael Copa
2019-03-11 17:37 ` [dpdk-dev] [PATCH 13/15] crypto/dpaa2_sec: simplify pr_{debug, err, warn} macros Natanael Copa
2019-03-11 17:37 ` [dpdk-dev] [PATCH 14/15] net/netvsc: fix compile warning for fcntl.h include Natanael Copa
2019-03-11 18:17   ` Stephen Hemminger
2019-03-11 17:37 ` [dpdk-dev] [PATCH 15/15] eal/linux: use gettid(2) for debug message in sigbus_handler Natanael Copa
2019-03-11 18:21   ` Stephen Hemminger
2019-03-12 10:22     ` [dpdk-dev] [PATCH v2 15/15] eal/linux: simplify " Natanael Copa
2019-03-13 11:45 ` [dpdk-dev] [PATCH 00/15] Build fixes for musl libc Sirvys, Andrius
2019-03-13 16:53   ` Natanael Copa

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